2013年9月26日星期四

Choose the right path according to nursery stock and other effective herbicide

Many varieties of herbicides have foliar treatment agent, herbicide and so on. Some apply preemergence weed leaf stage for some weeding . Therefore, according to the different varieties of seedlings and weeds in different periods were selected . Strong resistance of coniferous species such as optional by the nitrofen , Gallant and fruit Haier ; resistant tree species poor choice of garden grass letters, nursery grass net , Butralin , Prometryne so on.

Determine a reasonable method of application , improve application techniques . According to the nature of the herbicide used to determine the correct method . If using glyphosate herbicide , be sure to do directed hand sprayers spray , otherwise it will damage on seedlings . Such as the use of trifluralin , you need to mix the soil , otherwise easily lead to photolysis and failure. Herbicide spraying must be uniform . If adjacent plots are herbicide sensitive plants , will have to take quarantine measures , remember when the wind is not spraying so as to endanger the adjacent sensitive crops . Sprayed drug use bleach rinse the sprayer after a few times and then further use on other plants . Herbicide sprayer is best dedicated to avoid hurting other crops .

Herbicides strictly against the water . Each concentration of the herbicide has the best efficacy . Excessive water , herbicide concentration is low , it will affect the herbicidal effect ; water is too small, the herbicide concentration , high cost , and easy to cause injury ; therefore , spraying herbicides must be in strict accordance with the instructions watered , you can use graduated cylinders , beakers assist weighing, as far as possible weighing accuracy .

In addition, high organic matter content of the soil particle size , herbicide adsorption capacity , and soil microbes and more vigorous activities , drug dose is degraded , may be appropriate to increase the dosage ; while loamy coarse sand , the adsorption amount of pharmaceutical small pharmaceutical molecules in the soil particles are mostly free state ,flower sprayer activity, prone to injury , the dosage can be reduced appropriately .

Most herbicides in alkaline soil stability, not degrade , the latter stubble seedlings produce injury , should be sprayed on the type of soil in advance as possible , and use caution.

Do not ignore these biological pesticide use

Reference to the local climatic conditions to select the best use of time effect of the use of biological pesticides greatly influenced by environmental factors . In fact , bio-pesticides sprayed on plants and insects from feeding or take some time to catch the bacteria . From feeding insects to death also requires a process. During this period vulnerable to environmental impact . The most influential factor is the temperature , humidity, light breeze. Temperature can spores in Biological pesticides , but also to act on the pests themselves , thus affecting the pathogenic microorganisms , pathogenicity and toxicity : moisture spores of biological pesticides is directly related to multiply and spread , humidity , microbial spores and diffusion fast, easy infection and kill pests ; sun's deadly ultraviolet radiation on spores killing effect , and therefore should be used to avoid glare should be on a sunny day at 8:00 hours before , after , or in the absence of 16:00 cloudy with rain better ; wind drift on the powder and spread of biological pesticides has a very important role in the breeze to use dusts biopesticides best.

Appropriate choice of the chemical sprayer device in practical applications , most efficient use of plant protection equipment are low, usually directly to the crop spray from top to bottom , so a lot of pesticides are gathered leaves above the crop , the crop deposited on the lower leaves fewer pesticides , falling more losses in the soil surface . If the droplet is large, the loss of even more . Because of high cost of production of biological pesticides , so you want to select spraying , high efficiency, good atomization , saving pesticide plant protection equipment . If mist duster , mist sprayers .

Depending on the area to create suitable conditions for the use of bio-pesticides in different regions are not the same . China's vast regional differences larger southern humid and rainy . Drought in northern and western regions .
Biological pesticides to meet their daily needs only the best conditions to achieve maximum effect. On the one hand to increase the farm sprayer spraying water arid regions , create a high humidity environment , easy microbial spores survive and multiply ; on the other hand in the formulation of the polymeric material to add some specific solution viscosity and increasing substances, such as starch, animal glue, ash leachate , etc., can reduce evaporation , to avoid rapid drying and improve efficiency. Further , according to the characteristics of the pest migration . But also the use of biological pesticides and chemical pesticides with low toxicity and efficient measures used . Chemical pesticides to reduce pest resistance. To create conditions for the invasion of pathogenic microorganisms , and insects after infection by pathogenic microorganisms , but also reduces resistance to chemical pesticides , the two complement each other, so as to achieve the effect of increasing efficacy .

2013年9月25日星期三

Pesticide use is really varied

Coating application methods . This method is mainly used for spraying fruit trees . When Apple bagless cultivation , its number will be doubled if the rust . Is currently on trial at home and abroad in the Apple fruit when applied layer coating agents, so that the fruit surface covered by a thin film to prevent pests and diseases. Foreign agents have now covered the sale of goods .

Seed coating technology . It is wrapped in a layer on the seed insecticides or fungicides by a coat to protect the seeds and the subsequent growth of infringement against pests . At present, China China Agricultural University and Jiangsu Wuxian pesticide plant has tried a variety of seed coating agent made ​​of carbendazim .

Linked network application methods . Also used in fruit , it is woven into the fiber mesh cord impregnated with the desired high concentration of medicament , and display of the desired control of the fruit in order to control pests on fruit . This method of application to extend the efficacy period may reduce the frequency of administration , garden hand sprayers reduce the dosage .

Floating in the water spraying method . This is a new development in recent years, pesticide use of technology. It is based on expanded perlite as the carrier , processed into surface floating agent , particle size of about 60 to 100 mesh . There are currently methyl parathion surface floating agent, methamidophos surface floating agent , this application methods for the control of rice stem borer infestation part of a highly targeted , efficacy significantly, and longer-term efficacy .

Controlled release application techniques . It is used to reduce drug consumption , reduce pollution , reduce crop residues and extend the efficacy important application techniques . It was estimated that by 2000 controlled release after manual sprayer spraying method has the potential to become a major way .

The development of pesticide use is a reflection of the development of pesticide formulations . In other words , a new method of using appears , be sure to order a new pesticide formulations backing . Are mutually reinforcing and complementary .

Pesticides can be used fumigation method

Smoke smoke produced by the use of pesticides to combat pests application methods . This law applies to the control of pests and diseases, rodent control and sometimes this method can also be taken , but not for weed control . Cigarette is suspended in the air of the solid fine particles, the important feature is the ability to self- diffusion space , chemical sprayer the air flow disturbance , can spread to a larger space and in a far distance , the settlement slow prills can be deposited all parts of the target body , including the back of leaves , thus better control effect . Fumigation method is mainly used in small enclosed environments such as warehouses , buildings , greenhouses, plastic greenhouses and large tracts of forest and orchard . The main impact of fumigation efficacy factors airflow five points:
① updraft so smoke escaping the upper space , can not be stuck in the ground or crop surface , so the day can not be exposed to fumes ;
② inversion , sunset, surface ground or crop will be released in calories , so that near the surface of the ground or crop or crop the air temperature is higher than ground surface temperature , which is conducive to retention of the smoke does not escape very quickly , so in the evening and early morning to put cigarettes are easily succeed ;
③ The wind will change the flow of smoke and running speed and breadth of smoke in the wind when you put a small can achieve better control effect ;
④ sea breeze and land breeze in the adjacent waters of the land , the morning wind blows from the land surface of the water , that the breeze ; evening wind blowing from the land surface ,hand pump sprayers that the sea breeze . Alternating in the sea breeze and land breeze during the ground appeared calm wind zone ;
⑤ easy to smoke low-lying land , cold region is relatively concentrated . Study, the airflow and topography, can be successfully used in the open method of fumigation .

2013年9月24日星期二

Nai has three functions

( A ) prevent herbicide injury . In the use of herbicides Jiarunaian , prevention and mitigation of herbicides on crops hidden injury.

( 2 ) treatment of herbicide injury . Due to improper use of herbicides or herbicide residues resulting from injury , can accelerate the decomposition of crop spraying Shinai An herbicide residues in vivo , the crop quickly restore normal growth .

( 3 ) decomposition of soil residues . Continuous use Nai , can completely decompose herbicide residues in soil , reduce herbicide on the crop after crop of sensitive safety interval , increasing crop rotation flexibility , prevent injury after crop emergence .

Nai simple and easy to use , and the closure both herbicides, mixed foliar treatment , can also be used alone ; but also can , and various insecticides, fungicides , fertilizer and conditioning agent mix. Specific methods are: 1, spray or IRRIGATING : 1 to 2 per acre with Nai watered 15 to 30 kg bag of flower sprayer spray or IRRIGATING ; 2 , dressing , soaking or dipping seedlings: a bag of 40 g with Nai , dubbed 100 to 200 times the liquid, 6 to 12 hours or soaking seedlings 5 to 10 minutes immersion . Specific methods of operation are: 1, liquor preparation: Nai whole bag into a small container, add appropriate amount of water, stir 3 to 5 minutes, so Nai fully dissolved , with a good liquor ; 2, the preparation of liquid : first drug barrels which add half a bucket of water, then pour the liquor with a good spray , then fill water spray.

Nai effects in a variety of crops are significant in the performance of soybean : soybean emergence flat leaves no shrinkage, growing strong, thick stem , root , root thick , tough , fibrous roots increased more than rhizobia and large ; while disease was significantly lighter ; latter part of the performance of low pod pods and more, more grains , grain bread , an increase in the range of 20 to 30%.

Nai use effect on maize showed no yellow seedlings, Dunmiao phenomenon ; corn seedling uniformity is good , dark green leaves , thickness, thick stem , root , yield significant results .

Nai use on cotton effect is very obvious, and the closure of herbicides after no black cotton seedlings after emergence , dead seedling rot and other phenomena ; lightweight cotton diseases ,perfume sprayer growing strong ; Leiling increased, fewer bells fall , the yield increased large .

Once the herbicide crop injury , spray Shinai An after 3 to 5 days will be able to quickly restore the crop growth .

Pear fertilization technology management

One , more organic fertilizer , organic fertilizer to improve soil fertility in pear trees need to grow not only contains a variety of nutrients , and can improve soil structure , increase soil nutrient buffering capacity , increase soil water holding capacity , improve soil aeration , reduce soil resistance to root growth is conducive to the growth of pear trees .

Second, the nitrogen fertilizer nitrogen is greater nutrient requirements pear one . Production of 100 kg of nitrogen per fruit absorbs about 0.4 to about 0.6 kg of nitrogen . The use of nitrogen fertilizer on the growth and development of pear has a great impact. More appropriate in a range of nitrogen , an increase in the number of branches and leaves of pear , strengthen the role of tree vigor and increase production . However, if excessive nitrogen fertilizer will cause leggy shoots , fruit nutrition disorders caused not only induce calcium deficiency and other physiological occurrence of disease.

In the NPK , pear saplings more relative to the nitrogen , followed by potassium , phosphorus absorption less nitrogen is about 1 /5. Results , pear absorb the proportion of nitrogen and potassium saplings similar, but the increased uptake of phosphorus , nitrogen is about 1 /3. In fertilization should be different . Pear saplings period in general , according to the size of the tree , the amount of nitrogen fertilizer per year the amount of nitrogen in nitrogen Mushi count of 5 to 10 kg , after the result of the gradual increase to 15 to 20 kg , the individual needs more fertilizer varieties increased to 25 kg .

Pear nitrogen uptake by growing new shoots and young fruit enlargement period , followed by a second for the enlargement of the fruit ,backpack chemical sprayers the fruit after picking absorption is relatively small. Therefore, there are three main nitrogen fertilizer during the first period is the bud after fertilization before flowering certain amount of nitrogen topdressing can improve fruit setting rate , and promote the growth of foliage , leaf-fruit ratio helps to improve and maintain balance vegetative and reproductive growth , especially for the weaker saplings and tree vigor resulting tree foliage nitrogen fertilizer can help promote growth, enhance the role of tree vigor ; generally applied nitrogen fertilizer for the whole year is about 1/5 . But for the more prosperous fruit grower , generally not nitrogen fertilizer during this period to prevent excessive vegetative growth pear , affecting fruiting . The second period is the growth of new shoots Wang fertilization period, fruit enlargement period before the second , and with proper nitrogen fertilizer application of P and K , helps to increase productivity improve quality ; But do not topdressing prematurely , to prevent foliage the excessive vegetative growth , affecting pome fruit sugar content and quality ;low pressure sprayer this is about the year of fertilizer nitrogen fertilizer to 1/5 . The third period is the pome fertilization timely fertilizer before harvest the seeds for next spring and flowering prepare for the outcome ; generally about this period of the year nitrogen fertilizer applied to 1/ 5 . For more vigor weak and results pear, if not promptly after harvest chase Fertilizers , may be appropriate to re- apply a certain amount of nitrogen and phosphorus and potassium fertilizer to restore vigor , easing tree nutrient deficiency , pear growth for the coming year to prepare .

Contraindication to the use of pesticides

1 , avoid using well water dispensers . Well water contains more calcium, magnesium and other minerals , which react with the liquid easily precipitate , thus reducing the efficacy.

2 , avoid sewage Pharmaceuticals. Sewage containing impurities, after dispensing spray nozzle clog back pack sprayer , while also undermine the stability of the liquid , reduce the efficacy.

3, avoid rain days and high temperatures spraying. Windy spraying pesticides will drift ; rain spraying , liquid rain washed easily reduced efficacy ; temperatures spraying, prone to injury and poisoning. Therefore, the best time of application lies in : 8:00 to 11:00 , 16:00 to 6:00 . Weather permitting , the breeze when spraying.

4, avoid misuse of pesticides. Should be based on crop type , control objects and agents using the corresponding properties of different pesticides , so that the right medicine , and contraindications blindly increase the amount of pesticide , resulting in increased resistance to pests and reduce the control effect , but also prone to injury.

5, avoid spraying flowering . Spraying of crops and fruit trees in bloom , prone to injury .

6 , avoid preharvest trigger sprayer spraying. Since pesticide residues in crops to produce , if preharvest spraying, drug residues easily lead poisoning after eating people .

7 , avoid a medicine used in conjunction . Long-term use of one or formulations of pesticides , easy to make pest control effect and reduce resistance and therefore should alternate medication.

2013年9月21日星期六

Opportunity for germs Summer car maintenance

Although the countries have been closely monitored , but the recent outbreak of H1N1 influenza in Mexico is still spreading rapidly worldwide , and its propagation speed and panic caused by the heart to the people almost caught up with a few years ago "atypical pneumonia ." Of course, China has not yet found cases , the people have had no need to panic , but everything should be prepared for the worst , especially in humid and rainy summer has come , the more the breeding provides a breeding ground for bacteria . As a car owner , how to avoid letting your car become a carrier of infectious bacteria , we need to do is scientifically clean cars, do not give the opportunity to stay the spread of germs .
Mats

The car is most likely dirty mats . It is direct contact with the shoes, rain shoes will absorb rainwater . If left unattended , it is easy to mold, bacteria and become other hiding places . How to thoroughly clean it then ?

The mats folded up out the car, in order to avoid the dust falling on the vehicle. After removing the dust with a duster dust them off . In again with a brush before flushing to clear the dust deep crevice . If you can often do, can effectively suppress the lice or odors . Next, the entire water wet mat after stepping down on the mat will detergent , be careful not to pour too much. If pure wool with long hair and is made ​​of advanced materials such as mats , it is recommended to use special wool washing liquid detergent such , will not hurt the fiber, but also cleaned and mats will look fluffy and soft . When the detergent covered on a treadmill mat , to re- use a brush , especially the driver's seat with a mat, more force is needed to brush . Scrub depending hair brush along the array direction . Then rinse detergent must take very clean, while using softener. Finally, there is dry. If it is long-haired mats , to try to make wool bristling , then put mats to dry thoroughly dry diagonally .

Ceiling

Car roof roof cleaning method according to the inside of the material, the color varies . Use light-colored cloth seat cleaner. First seat prostrate , then towel or chair cover to cover , to prevent the roof dripping water or detergent contamination. And then poured into water and spray detergent liquid , spraying the roof . After a little foaming cleanser gently scrub with a brush . Note that using a soft brush and lighter than the intensity . Otherwise easy to pilling , but also hurt the fabric . Wait until the dirt floating on the surface , then use a towel wrung wipe the foam . The rest of the dirt , can be removed with detergent . Dark lines you want to check the extent of its dirty , just use a clean wet towel and gently wipe the surface of the can. If the stick is above the white towel brown dirt ,fruit tree sprayer which means that the roof has been dirty . No matter what kind of car every two to three months can use this method check again. If you find that you can wipe clean with a wet towel , then I need to use a cleaning agent .

Seat

When cleaning the seat , the seat of dust and dirt to be dealt with separately. First with a vacuum cleaner on the surface of the residual net absorption of garbage or dust with a wet towel ( preferably white ) Wipe the surface of the seat . If still not clean, then cleaning agent to do the cleaning work. If dirty, clean with detergent directly seat .

Quality velvet seat cleaning method , the first step is to first open all the doors , with a duster to dust duster clean with a vacuum cleaner to suck out the garbage . Then wash using detergent to try to let loose foam in the seat surface, so attached to the seat surface dirt float. Wait until the foam gradually reduced, then scrub . Scrub brush is best to use the bath body brush or cleaning the face , because their hardness and the length of the bristles are just right, it is also very easy to use . Do not scrub scrub , trigger sprayer simply brush gently brushed the seat surface can be, that would be enough eyes to see the dirt brush down. Finally, then wrung wet towel drying the foam . After cleaning, the door is fully open , allowing the car to maintain good ventilation condition , in order to dry the seat as soon as possible .

Rice herbicide injury remedies

Use herbicide antidote

Selective herbicides in small add or with an antidote , can improve the selectivity of the herbicide , hand pump sprayers the crop from toxic herbicides . When injury caused by improper use of herbicides can also be used to reduce injury antidote . Antidote used :
( 1 ) naphthalenic : dressing for the selective protection agents, seeds can be absorbed , and in the roots and leaves -inhibiting herbicides on crop damage. To seed weight 0.5% to 1 % of the naphthalene anhydride mixed rice seeds , make rice from Gerbera special, vernolate , oats enemy , molinate and other thiocarbamate herbicides damage .
( 2 ) Dichlormid : EPTC is to prevent damage to corn special protection agent. It can be used for seed dressing , can be sprayed with herbicides for soil treatment . Average amount of acres 10 ~ 45g The agent also has a protective effect on rice to make rice from vernolate , oats fear , molinate , cable, Doyle , and other herbicides acetochlor Butachlor damage .
(3) OM: Sexual Abuse agent for the foliage spray the agent and the plant has a high affinity for the stratum corneum of the epidermis , the plants can be formed on the surface layer of protection against herbicides enter. Its use in lieu of grass g rice detoxification .
(4) 2,4,6-T: The agent with 2,4 -D antagonism , reduce Benthiocarb bud stage in rice on rice injury. In addition, some sterilization, pesticides and plant growth regulating agents may also be used as a herbicide antidote. If bakanae Spirit is the soil treatment fungicide , used to process rice seedbed , can reduce simazine , chlornitrofen other toxic herbicides on seedlings , improve seedling survival. GA ( 920 ) may be discharged by 2,4-D caused injury to rice and cotton MCPA poisoning . Phytotoxicity symptoms occur in rice , 40 units per acre with 10kg content gibberellin solution foliage perfume sprayer spray , can quickly restore normal growth of rice .

Paddy herbicide injury arising from these areas

Wind conditions . Spraying herbicide, wind conditions can lead to herbicide spray drift , causing sensitive crop injury . Particularly in hand sprayer spray 2,4-D, MCPA and other herbicides , if larger the wind , the wind will cause crop injury . Glyphosate , paraquat Herbicide when wind causes droplet spatter can cause a variety of crops were affected by injury.


Soil texture. Viscous heavy, high organic matter content of the soil, strong adsorption of pesticides , pharmaceuticals little mobility in the soil . The sandy soil organic matter content is low, the absorbed weak, easy to leaching in the soil easy to spread , easy to make some of the crop phytotoxicity . Such as water-soluble high linuron , prometryn simetryne and other herbicides in the sandy soil is easy to make crops suffer injury.

In short , causing crop injury variety of reasons, but the most fundamental reason is the human factor . If garden water sprayer spraying is not master application techniques , blind indiscriminate use that drug misuse , or use of any increase dose or concentration , growth stages in inappropriate medication, or use the herbicide sprayer is not thoroughly cleaned , even if used for pest control disease prevention , may result in crop injury .

2013年9月17日星期二

Selection and use of pesticides currently the main problems

By pesticides to control, China's annual direct economic losses of about 80 billion yuan, but China's pesticide use process there are still many problems in the new market economy, how to improve the scientific and rational pesticide selection and safe use of work to produce quality and safety of agricultural production and the rural economy has become a top priority.

Pesticide production from our current situation, the national production of more than 2,600 enterprises, registering about 500 varieties of more than 600 agents, the product of more than 20,000. 2009, pesticide output reached 1,849,200 tons, of which pesticide production was 657,000 tons, accounting for the proportion of total pesticide 43.43%. Herbicides cumulative production of 650,500 tons, accounting for pesticides herbicides proportion of 42.99 percent of total output. Fungicide total output reached 205,300 tons, accounting for pesticides fungicides proportion of 13.57 percent of total production. Ranking first in the world.

In recent years, China's cultivated land area remained at about 110 million hectares, sown area of ​​23.46 million mu of crops, pests and diseases in an area of ​​about 56 million mu of times, control area of ​​58 mu Ci. Pesticides to control through an annual direct economic losses of about 80 billion yuan, pesticide input-output ratio of about 1:6-10. In the new market economy, how to further improve the scientific and rational choice and pesticide safe use, produce high-quality and safe agricultural production of rural economy has become imperative.

Seven current issue of pesticide use

Select Pharmacy unscientific. First, the farmers did not understand the control object, and a variety of pests and diseases when the indiscriminate use of pesticides habits, even with insecticides to combat diseases. Second, the abuse of highly toxic, high residue pesticide phenomena still occur. The continuous enrichment of these pesticides not only led to excessive pesticide residues in crops, but also seriously pollute the environment.

Period or improper use of crop hand pump sprayers spraying. First to fight drugs is not timely, but no worms do not fight drugs, and saw a lot of worms occurred resort drugs, drugs to fight the best time delay. Second, do not follow the index medication, see the insects on governance, see the diseases prevention, not only affect crop growth and development, and can cause contamination of agricultural produce grain. Third, the abuse of hormone pesticides.

Pharmaceutical preparation unscientific. Often formulated out of the solution concentration is too high, resulting in an increase of pesticide residues in produce injury. Also increases the speed of pest resistance.

Spraying poor results. The following main reasons: First, when the fear of effort to fight drugs, the easy way, liquid spraying is not in place, uneven plant bore, dorsal often vain drugs, some arbitrarily increase the manual sprayer  piece caliber, or even remove the sheet to make uniform contact with the discharge of the liquid can not parasites, it is difficult to obtain a good control effect. Second, do not look at the weather, time, free agents. Regardless of temperature, humidity, wind and other weather, random fight drug control effects caused by poor or personnel injury or even poisoning. Three, resulting in pesticide application equipment behind effective utilization rate. According to expert estimates, the effective utilization of pesticides only

20% to 30%, far below the developed countries, 50% to 60% on average.

Use unscientific. First, the reliance on chemical pesticides is serious. Do not know how rational use of agricultural, biological, physical and other integrated pest control techniques, but blindly extensive use of chemical pesticides. Second, the use of pesticides pharmaceutical blind mix, making pest resistant or cause injury occurred. Three are free to increase drug concentration and dose.

Expert Weapon scientific and technological means to reduce disaster losses

Five Keys rice disaster management

Most of the current rice at booting to flowering stage, and ratoon rice at tillering stage. Therefore, flooded after early, mid-season manage to remember five points.

First, as soon as drainage. In the vegetative growth of rice, the most intolerant of flooded rice can cause death. Timely drainage, as soon as possible so that the tip of rice out of the water. As waterlogged paddy more fear of drought, if on cloudy days, can take a one-time drainage; case scorching hot weather, you should first make rice plants exposed upper surface of the water, then drain the rice water in the afternoon.

Second Dingmiao wash Miao Miao Fu. Strains of rice seedlings by hand propped the lodging and earth given root. As long as the ground is not completely lodging rice, can be put into a small bundle through artificial ways to save. Can also be used with a nylon rope tied weeds. Disaster is often attached to a layer of rice leaves sediment will affect photosynthesis. Subject Sunrise, leaves white, can be used on the blades pull the rope, or water power sprayer spray with spray, hydroplaning rice plants silt and other debris.

Third, pest and disease control. After the flood, many leaves appear wounds, the most prone to bacterial leaf blight, rice blast and other pests, blight available MBAMT WP, WP 1 leaf blight spray watered; blast control can be used tricyclic azole WP; or 45% blast Trane colloidal suspension agent.

Four is reasonable irrigation. After the rice fields flooded deepwater management should not try to take the moist management, adopt Dry wet irrigation methods, exposed mud promote root, garden sprayer backpack lower humidity field, the possibility of reducing the incidence of rice. Both to ensure the rice plant water needs, but also to ensure soil aeration, and promote root Upper Nodes occur quantity, strong vitality. Filling late, taking care to avoid premature shutoff.

Five is the importance of potash fertilizer application. Potash can enhance lodging resistance, but also enhance resistance to disease and improving rice paddy seed rate. Disaster must pay attention to the combined application of potash. 7.5 kg of potassium chloride can be applied per acre to 10 kilograms.

Rainy season should pay attention to these pesticides

Adding liquid adhesives and auxiliary synergist. The washing powder, tapioca Whey, dry tea leachate, which are substances added adhesion pesticides, can enhance crop pesticides and pest parasites in the adhesion, thereby improving control effect. Method is: per 50 kg of liquid detergent agent added 50 to 75 grams, or tapioca 100 to 150 grams, or tea dry leaching filtrate from 250 to 300 grams, stir timely hand held sprayer spraying. Note that the best now with the current, non-long home. In addition, 0.1% of pesticides harmful legislation pingxiao anti-liquid (Health-funded companies have sold) and other synergists, the control efficiency can be increased significantly. Detergent, dry tea with acidic leachate generally should not mix pesticides.

Appropriate to increase the liquid concentration. Rainy season should be increased spraying pesticide concentration (except for highly toxic pesticides), disease, pest control, weeding effect can only be guaranteed. If the concentration of a pesticide used from 1000 to 1500 times during the rainy season can be 800 to 1000 times.

Improved application methods. If you choose a systemic insecticide, before the occurrence of a large area in Pest, fine soil mixed with soil applied into the roots of crops, so that plants absorb, resulting in pest feeding poisoned and died. Spray pesticide before use long smooth bamboo gently roll off the drops of water on the plants and then spraying. Fight drugs when changing the traditional front row in front of the word body swing nozzle to nozzle sideways swing of the word, so that aisle just spray the liquid on the plants would not have been a result of people walking sweep. Wherever conditions permit, the rainy season can be used ULV sprayer spraying mist particles such devices uniformly fine, easily plant leaves, stems stick without loss. The knapsack power sprayer spray spray pole 1.3 mm aperture diameter of 0.7 mm slice into pieces of stainless steel spray has the same control effect, pay attention to the preparation of liquid with a fine mesh water filter, plug the hole in the BOP.

2013年9月13日星期五

Herbicide nicosulfuron phytotoxicity

Herbicide ( metsulfuron beans )

( A ) the cause of the injury . Previous crop herbicide application or locally significant dose is too high , the residue in the soil after herbicide crop of corn can produce injury .

( Two ) phytotoxicity symptoms. Soil treatment with herbicides , corn seedling growth inhibition , shorter taproot and lateral buds grow slowly, grow yellow leaves . With herbicides stems, leaves treatment, foliar chlorosis starts from the base , yellow, purple , and gradually extended to the whole leaf . Sometimes leaves rolled into a simple shape , easy to expand . Growth inhibition, plants grow shorter .

( Three ) injury prevention and mitigation measures . Herbicide should not be used for corn , especially not in the pre-emergence application . Qiancha soybean field applied herbicide excessive or uneven flower sprayer spraying , the latter should not be planting corn stubble .

Nicosulfuron ( Nicosulfuron )

( A ) the cause of the injury . With herbicides stem, leaf processing , corn Nicosulfuron resistant , normal application generally does not produce injury , only spraying excessive, excessive or topical drugs appear when the phytotoxicity symptoms. Shi Guo organophosphate insecticides Zaishi nicosulfuron may produce injury.

( Two ) phytotoxicity symptoms. With herbicides stems, leaves treatment, heart back green leaf base , or irregular chlorotic leaf spot . Some leaves curling into a tubular shape , margin shrinkage, affecting leaf extract . Some growth was lodging oblique shape . Growth inhibition, dwarf plants .

( Three ) injury prevention and mitigation measures . Avoid excessive hand pump sprayers spraying, spraying to ensure uniformity . Phytotoxicity generally do not take action. With naphthalene dicarboxylic anhydride for corn seed coating can reduce Nicosulfuron role with organophosphate insecticides caused injury.

Herbicide injury causes

( A ) atrazine

Atrazine known atrazine , at high temperatures , bases and inorganic acids which can be hydrolyzed to the free hydroxy derivative herbicidal activity . In maize, the allowable residues of 0.02 × 10-6. Commercially available preparations are 50% and 40% WP suspension concentrate . Atrazine is a selective preemergence within the suction type , postemergence herbicides used . Right corn can control annual grass weeds and broadleaf weeds, weeds for some years there is a certain extent. Corn premedication after sowing , the soil organic matter content of l% ~ 2% of the area per acre with 40% of plastic hanging from 175 to 200 ml , organic matter content of 3% to 5 %, and more areas of weeds per acre with 40% colloidal suspension agent

200 to 250 ml , sandy soil with a lower limit , with a ceiling on clay , 1 to 3 days after sowing , add water to 30 kg with a sprayer to spray the soil surface . Corn postemergence treatment can be carried out in the four -leaf stage . Pre-treatment with the vaccine requirements essentially the same . The herbicide on beans and peach sensitive medication should strictly intended.

( 2 ) 2,4 - butylate

Pure product is colorless oily liquid , volatile , when alkali decomposition. EC formulation is 72% . The herbicide is selective herbicide absorption within the main control cereal crops Tanaka dicotyledonous weeds and some weed . Corn after emergence spraying 4-5 leaf stage ,garden pressure sprayers 45 to 90 gram per acre with water 15 to 75 grams of dried , spray weed foliage . If preemergence treatment, after sowing

3 to 5 days spraying is appropriate , the dosage of 50 to 100 per acre

Grams, add water l5 ~ 75 kg. Generally valid for three to six weeks , on a single , dicotyledonous weeds are valid. Cotton, soybeans and other crops against harmful when used to have a certain area of ​​separation.

Injury causes : too late spraying, application rate is too high or uneven spraying may produce injury.

Injury symptoms : soil treatment with herbicides , shoots bend, young roots grow upward , after the return to normal. With herbicides stems, leaves treatment, twisted stems , leaves narrow, sometimes wrinkled , heart -shaped leaves rolled into oxtail difficult draw , stem brittle, easily broken , the stem base was goose -like, easy to lodging .

Injury prevention and mitigation measures: use herbicides stems, leaves treated should not exceed 5-leaf stage ,pressure sprayers the dosage should not be more than 1080 g per hectare . Soil treatment with herbicide per hectare dosage should not exceed

2160 g . To ensure uniform spraying . Swallowed the medicine , immediately induce vomiting , gastric lavage, oral administration of 10 % ferrous sulfate , every 15 to 30 minutes 10 ml , serving a total of 3 to 5 times. Do not use warm water lavage to avoid promote absorption.

2013年9月11日星期三

Note the use of pesticides hot season

Most pesticides and toxic substances for the chemical substances in the control crop pests plays a pivotal role. However, if the use or improper operation can easily cause human, animal or crop phytotoxicity poisoning . Summer hot season , at the peak of a variety of pests and mixed hair , prevention of drug use is more frequent in pesticide use should pay attention to the following points:

1, the preparation of liquid when dispensing personnel should wear rubber gloves , in accordance with a prescribed dose of medicine , said measuring liquid or powder, are not free to increase or decrease the dosage . Preparation of liquid mixing prohibited by hand directly .

2, mixed drug use tool to stir , how much , how much mix , as used with the configuration of the liquid ; mix over the drug should be used seed sowing machines . As with the artificial hand or point spread species , should wear rubber gloves. Right mix of seeds over the remaining drug should be destroyed , not as food or feed use .

3, where the sickly , suffering from skin diseases and pesticide poisoning and other diseases has not been restored healthy , lactating , pregnant , menstruating women , skin lesions healed , shall not be suspended spraying or spraying operations .

4 , the use of pesticides should be interlaced knapsack sprayer spraying spray can spray while swinging left and right sides , to downwind spray. Try to avoid the midday heat period winds and spray. And note that the liquid medicine is not overfilled bins to avoid spray liquid shake out operations outside the barrel , pollution caused by pesticide poisoning symptoms of their bodies .

5 , should be carefully examined before fruit tree sprayers spraying Medical Device switches, connectors , etc. screws are tightened to avoid " drip , run, run, drain " caused by pesticide pollution . Clogging the spray process , the application of water rinse after troubleshooting. Absolute prohibition of mouth pipetting nozzle or strainer .

Rice increased fertilization promoting premature technical measures

Due to floods , the province in many places rice seedlings time later , transplanting seedlings seedling age is short, weak growth of the seedlings , the latter by the " cold dew wind" greater threat . This paper proposes increasing rice fertilization promoting premature technical measures are as follows :

A timely topdressing reviving tillering . First, the lack of seedling age , growth was slow plots, in August 20 topdressing nitrogen and potassium , to promote tillering turning green . Topdressing urea fertilizer per acre 5-7.5 kg , potassium or potash for fertilizer application is not enough plots , potassium chloride 5 kg per acre Gasch . Two for planting late, too weak Miaoqing plots in topdressing urea ( 7.5-10 kg / mu ) at the same time ,hand pump sprayers  available " nine hundred twenty " modifier for foliar application , in order to accelerate growth of rice . Usage: mu with " nine hundred twenty " modifier 1 to 2 grams watered 50 kg foliar spray 1. Three for the seedling age is normal but slow growth bias plots , topdressing urea 4-5 kg per mu , bottom plots potassium deficiency , topdressing potassium chloride 3-4 kg .

2 , early foliar strong Postheading . In the Sept. 15 , to take the way topdressing spraying strong Postheading spike . Application method : first , as the growth of the seedlings 3-5 kg ​​of urea per acre applicator , and then 0.5 kg 0.5 kg potassium dihydrogen phosphate, urea, zinc sulfate heptahydrate 0.25 kg 50 kg watered after mixing choose cloudy or sunny 9:00 before or after 4 pm with a sprayer for spraying . Were back pack sprayer sprayed twice at intervals of 4-5 days is appropriate. Note sprayer spraying fertilizer used repeatedly washed with water before , herbicides and other residues resulting seedlings to avoid injury.

The use of pesticides to be particularly careful

Crop pest control should follow the " prevention first, comprehensive prevention and control " approach to minimize the frequency of use of chemical pesticides and amount , in order to mitigate environmental , quality and safety of agricultural products .

First, a good grasp of medication period. Most pests and diseases in the early stages , the symptoms are mild , such as cotton wilt disease early fungicide IRRIGATING effect, after the outbreak of a large area , even if multiple dosing , the loss is difficult to restore. Before the third instar caterpillar is easy to control . Therefore , the majority of sterilization, the effect of pesticides is not bad, but missed the best use of time .

Second, a good grasp of the dosage, water . Some friends of farmers in the use of pesticides , in order to reduce the workload , more drugs are often less water . In fact, the effective concentration of pesticides , the effect is good or bad depends on the coverage of liquid , such as knapsack sprayers spraying herbicide Butralin closed soil , the soil moisture is poor, you must increase the amount of water in order to form a closed membrane , or liquid only spotty distribution , reach closure weeding effect. In spraying insecticide, fungicide , sufficient water is necessary, because the eggs , germs are more concentrated in the surface of leaf , close roots in the soil, if less water when spraying , it is difficult to do the whole plant garden water sprayer spray thoroughly, the residual dead eggs , residual bacteria it is easy to outbreaks. Blindly increase the concentration of pesticide use will strengthen the bacteria, pest resistance, exceeding safe concentration injury will occur . Therefore, simply increasing solution concentration , often counterproductive .

Three is to choose the good performance of the application equipment . Should choose the regular manufacturers of Medical Device , regular replacement of worn nozzle. Spraying of herbicides should be dedicated Equipments .

Fourth, pay attention to the rotation medication. Even the best varieties of pesticides can not be long-term continuous use. Because, in an area where a certain kind of long-term single-use pesticides, will inevitably lead to the effect decreased, resulting in resistance to control objects , the correct approach is to rotate different types of pesticides.

Fifth, strict compliance with the safety interval specified. Pesticide safety interval refers to the last application to harvest crops, the number of days that the ban on the use of pesticides before harvest days . In actual production , the last crop spraying to harvest time should be specified on the label than the safety interval length . To ensure that agricultural residues are not exceeded, the security can not be harvested during the interval .

Turfgrass Basics

Cool-season turfgrass main features

Optimum growth temperature is 15 ~ 25 ℃, distribution north, northeast, northwest . Hardy, long green period of the year there are two growing peak spring and summer slow growth, and the emergence of the phenomenon of dormancy . Rapid growth, good quality , wide use ; available seed propagation , vegetative propagation can also be used ; poor heat resistance , poor resistance to diseases and pests , requiring fine management . High administrative costs .

The main application of lawn grass as several genera : Poa , Lolium , Festuca and Agrostis spp.

Warm-season turfgrass main features

Optimum growth temperature is 25 ~ 35 ℃, the Yangtze River and southern regions. Heat- year growth of only one peak of summer , spring growth is slow , versatile, can be propagated by seed , vegetative propagation can also be used , often vegetative propagation , pest resistant ability, management is relatively extensive ; green short, quality uneven.
The main application of lawn grass as several genera : mainly in the following eight genera: Zoysia , buffalo grass genus Cynodon , carpet grass genus, centipede grass genus, water power sprayer obtuse leaf grass genus Paspalum , Eragrostis .

Other Lawn: clover, horseshoe gold , safflower shamrock , Radix , Zephyranthes .

Weed Basics

Statistics lawn weeds now there are nearly 450 kinds of weeds , belonging to 45 families , 127 genera. Which Asteraceae 47 kinds ; Chenopodiaceae 18 kinds ; Gramineae nine kinds ; sedge 16 kinds ; Caryophyllaceae 14 kinds ; Labiatae 28 kinds ; Qiang The Section 13 kinds ; leguminous 27 kinds ; Umbelliferae 12 kinds ; Polygonaceae 27 kinds ; cruciferous 25 kinds ; Ranunculaceae 15 kinds ; Solanaceae 11 kinds ; Euphorbiaceae 11 kinds ; Liliaceae eight kinds ; poppy seven kinds ; Gentianaceae seven kinds . There are 60 kinds of main weeds .

Herbicides for weed control in accordance with the category of weeds can be divided into three categories , namely grass weeds ( sharp leaf grass ) , broadleaf weeds ( round leaf grass ) , sedge grass ( Spartina grass ) . Simple distinguish three kinds of weeds are as follows:

Weeds : leaves elongated ; back sprayers veins parallel ; stem section is circular ; roots fibrous root.

Broadleaf weeds: leaves broad ; veins reticulate ; stem section is round or square ; roots straight roots , there taproot .

Sedge weeds : leaves elongated ; veins parallel ; stem section is triangular ; roots fibrous root.

2013年9月9日星期一

Cotton foliar choice

Considerations when buying fertilizer

Look at packaging and instructions

Formal compliance with national quality requirements foliar species should be marked: product name, manufacturer name and address ; agricultural fertilizer registration number , product standard number, name and active ingredient content , weight , date of production ; water power sprayer product is suitable crops for area , using methods and precautions.

Look dissolved

Can put a bag of fertilizer and about 1kg mixed with water to see its dissolution . If the fertilizer is dissolved , no precipitation , indicating that the product quality is good, effective high nutrient , nutrients, easy to be absorbed by crops . If the foliage is not completely dissolved , underwater sediment , indicating that the product quality, but off , easy to plug in when garden pressure sprayer spraying spray nozzle, crop nutrient utilization is not high .

Look formulations and dry blasting degrees

Currently on the market there are two types of solid and liquid fertilizer , in general, better than solid fertilizer liquid fertilizer . Solid fertilizer is divided into two kinds of granular and powdered , granular fertilizer is better than powdered . Because granular fertilizer through special processing , with convenient application , high degree of drying and easy to store and so on.

Three Principles of the winter mixed pesticide

Winter indoor studio disease -prone , spraying more often, many farmers to reduce the frequency of spraying , reduce labor intensity , each spraying pesticides are mixed . Pesticide many species prone to problems when mixed , require special attention.

First, in order to accurately mixed pesticides . Fertilizer and pesticide mixtures in order: fertilizer, wettable powders, suspensions , liquid , cream then added , each adding a stir that mix, then add the next .

Two is to add water after dosing, the secondary dilution. Mixed , you can add the first half bucket of water in the v , add after the first pesticide mix. Then, the rest of the pesticide by a plastic bottle be diluted , diluted and poured into a sprayer , mix , and so on.

Third, use spray immediately after dispensing . In many cases, farmers generally will be at home with a good agent , and then transported to shed trigger sprayers spraying, when many agents have prepared several hours . Although just with the liquid does not respond when it does not mean you can be set free for a long time , or prone to react slowly , gradually reduce the efficacy .

In addition , farmers do not know when the pesticide can not be mixed , best first test a small area . Not only depends on the preparation when there is no response , but also to spend will not cause injury.