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BT乳剂是湖北省农科院植保所试制的苏云金杆菌的简称。它是一种微生物杀虫剂,对人畜无毒、不杀伤天敌、不污染环境、杀虫效果好。试验表明,BT乳剂除能防治鳞翅目害虫外,还可防治双翅目害虫。1984年,沈阳地区一万多亩玉米田,采用BT乳剂防治玉米螟,取得很好的防治效果。每亩用BT乳剂3～4两,按药与水的总量是砂粒重量的8％比例配制成颗粒剂。先用定量的水将BT乳剂稀释,再倒
BT emulsion is Hubei Academy of Agricultural Sciences Institute of Plant Protection trial of Bacillus thuringiensis abbreviation. It is a microbial insecticide, non-toxic to humans and animals, do not kill natural enemies, do not pollute the environment, insecticidal effect is good. Tests show that BT emulsion in addition to leprosy pest control, but also can control Diptera pests. In 1984, more than 10,000 acres of corn fields in Shenyang, the use of BT emulsion control corn borer, and achieved good control effect. BT emulsion per mu with 3 to 4 two, according to the total amount of medicine and water is the proportion of sand weight 8% formulated into granules. First, dilute the BT emulsion with a given amount of water, and pour again