看天生物农药的使用效果受环境因子的影响较大。实际上,生物农药从喷洒于植物到昆虫取食或接触菌体需要一定的时间,而从害虫取食到死亡也需要一个过程,在这一时期易受外界影响。其中影响最大的因素是温度、湿度、光照和风。温度不仅作用于生物杀虫剂孢子,而且还作用于害虫本身,从而影响病原微生物的致病性和毒性;湿度对生物杀虫剂孢子的繁殖和扩散有直接关系, To see the use of bio-pesticides by environmental factors greater impact. In fact, biopesticides take some time to get rid of or inoculate insects from plants and spray insects, and the process of feeding and killing pests also needs a process that is susceptible to external influences during this period. Among the most influential factors are temperature, humidity, light and wind. The temperature affects not only the spores but also the pathogenicity and toxicity of the pathogenic microorganisms. The humidity is directly related to the propagation and spread of the spores of the biological insecticides.