苏云金素是苏云金杆菌产生的一种热稳定外毒素,最早由Mc.Conell等人发现。它具有广谱的杀虫毒性,其主要作用特点是在幼虫脱皮或变态期起作用,使昆虫不能正常发育,导致畸形或死 Bacillus thuringiensis is a thermostable exotoxin produced by Bacillus thuringiensis, first discovered by Mc.Conell et al. It has a broad spectrum of insecticidal toxicity, its main role is characterized by larvae peeling or perverted period, so that insects can not normally develop, leading to deformity or death