长期以来,Bt(苏云金杆菌简称)是世界上用量最大的微生物杀虫剂,但应用范围局限于鳞翅目害虫.1977年,Goldberg分离出Bti菌株,使Bt的应用范围扩大到双翅目,对卫生害虫蚊子和蚋卓有成效.近年来。Krige和Corinna又分别报导了对鞘翅目害虫有效的Bt新菌株.Krige从大黄粉虫(Pyrrhalta lateola)的尸体中分离得到菌株,定名为Bt var. tenebrionis,简称Btt Corinna报导的菌株从美国加里福尼亚州的San For a long time, Bt (Bacillus thuringiensis abbreviation) is the largest amount of microbial insecticide in the world, but the scope of application is limited to lepidopteran pests. In 1977, Goldberg isolated the Bti strain, extending Bt’s application range to Diptera, Effective for health pests and mosquitoes. Krige and Corinna respectively reported new strains of Bt that are effective to coleopteran pests. Krige isolates from the body of Pyrrhalta lateola and named Bt var. Tenebrionis, referred to as Btt Corinna reported strains from the United States Garibaldi San