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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