应用微生物防治森林害虫是害虫综合管理中的一个重要组成部分。为进一步发掘当地病原微生物资源,在1982-1984年对多种病原微生物(特别是苏云金杆菌) 进行系统调查研究过程中,于1983年12月8日从甘南县绿色林场罹病落叶松毛虫幼虫体中分离得到苏云金杆菌一新菌株-GN128。经紫外线照射筛选、毒力测定、比较分析和防治试验初步认为GN128菌株在黑龙江省是防治落叶松毛虫的优良乡土菌株。 Application of microbial control of forest pests is an important component of integrated pest management. In order to further explore the resources of local pathogenic microorganisms, during the systematic investigation of various pathogenic microorganisms (especially Bacillus thuringiensis) from 1982 to 1984, on December 8, 1983, A new strain of Bacillus thuringiensis-GN128 was isolated. By UV screening, virulence determination, comparative analysis and prevention and control experiment initially considered GN128 strain in Heilongjiang Province is excellent native strains of prevention and control of pine caterpillar.