2013年9月26日星期四

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 .

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