湖北省农科院微生物实验工厂在分析美国高效悬乳剂(Thuvioide-HRC)的基础上验制出了BT乳剂——新型苏云金杆菌制剂。该油乳剂比粉剂质量稳定,施药过程中液滴蒸发少,覆着时间长。经北京、武汉等地试用防治菜青虫效果良好。1983年本市引入该试剂,于菜花、大白菜、雪里红上进行了药效及用药量的试验。 Hubei Academy of Agricultural Sciences microbial experimental plant in the United States based on the analysis of high-performance emulsion (Thuvioide-HRC) developed a BT emulsion - a new Bacillus preparations. The oil emulsion is more stable than the powder, the droplets evaporate less during the spraying process, and the coating time is longer. Trial by Beijing, Wuhan and other cabbage effective prevention and treatment. In 1983 the city introduced the reagent, cauliflower, Chinese cabbage, snow red on the efficacy and dosage of the test.