在害虫防治中,化学农药虽然起了极为重要的作用,但是,近年来世界上许多地区因施用化学农药过多而带来了一系列消极的后果,诸如生物群落平衡遭到破坏、次要害虫作用增强,主要害虫产生抗药性以致再度猖獗,环境和农产品被农药残留物污染等等。因而,寻找和利用微生物方法保护植物和防除害虫的工作,近几年也同样得到了极大的发展。相比之下,微生物防治对人畜和植物都无危害,避免了环境污染,又具有选择性,有利于保持农业 In pest control, although chemical pesticides play an extremely important role, in recent years, many areas in the world have had a series of negative consequences due to the excessive use of chemical pesticides, such as the destruction of the balance of biological communities, The role of insecticide has become more rampant, the environment and agricultural products have been contaminated with pesticide residues, and so on. Thus, the search for and use of microbial approaches to plant protection and the control of pests have also enjoyed tremendous growth in recent years. In contrast, the microbial control of no harm to humans and animals and plants, to avoid environmental pollution, but also has the selectivity to help maintain agriculture