一、前言“HD-1”是美国Dulmage于1970年从红铃虫上分离得到的一个对棉铃虫等害虫毒力较强的菌株,在苏云金杆菌分类上属血清型3a3b,定为库斯塔克变种(Bacillus thuringiensis var.kurstaki)。1971年美国用它作为标准菌株在几家工厂大批量投产,生产出粉剂、可湿性粉剂及乳剂等细菌制剂作为商品出售。1976年我国科学家代表团从加拿大带回菌种,交中国科学院动物所。1977年我们在研究推广 I. INTRODUCTION “HD-1” is a strain that is highly virulent to cotton bollworm and other pests obtained from American red bollworm Dulmage in 1970 by the American Dulmage. It belongs to the serotype 3a3b on the Bacillus thuringiensis classification, Bacillus thuringiensis var. Kurstaki. In 1971, the United States used it as a standard strain for mass production in several factories to produce bacterial preparations such as powders, wettable powders and emulsions for sale as commodities. In 1976, a delegation of scientists from China brought back the species from Canada and handed over the animal institute of Chinese Academy of Sciences. We are researching and promoting in 1977