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微生物防除和微生物杀虫剂的发展和成功,在很大程度上与用于防治害虫的病原微生物的选择和繁殖有很大的关系。苏芸金杆菌(Bacillusthuringiensis)杀虫剂不同品系的研究应用也取得了一定的进展。早先法、美、西德和捷克斯洛伐克用以防治害虫的菌剂大都是苏芸金杆菌血清型1Mattes品系和058品系。近年来美、日、苏等国也先后选用了其他血清型中针对某害虫高毒力或有特异性的品系(菌株)进行商品生产。日本也生产多品系的菌剂,如对蚕毒力低而对害虫毒力高的血清型7(IH-1 品系)和引自美国高毒力菌株
Microbial control and the development and success of microbial pesticides have largely been linked to the selection and propagation of pathogenic microorganisms used to control pests. The research and application of different strains of Bacillus thuringiensis insecticide have also made some progress. Earlier France, the United States, West Germany and Czechoslovakia for the control of pests are mostly Bacillus thuringiensis serotype 1Mattes strains and 058 strains. In recent years, the United States, Japan and the Soviet Union and other countries have also selected other serotypes for a pest highly virulent or specific strains (strains) for commercial production. Japan also produces multi-strain fungicides such as serotype 7 (IH-1 strain), which is highly virulent to sericity and virulent to the United States, and highly virulent strain