小菜蛾是十字花科蔬菜的主要害虫之一,在浙南地区一年发生10-15代,世代重叠,危害严重,抗性很强。在部分菜区年年暴发成灾,为了控制小菜蛾的危害,我站引进了美国陶氏益农公司生产的生物杀虫剂2.5%菜喜悬浮剂进行防治小菜蛾田间药效试验,现将结果报道如下。1.材料与方法①供试药剂2.5%菜喜悬浮剂1000倍液(美国陶氏益农公司生产; Plutella xylostella is one of the main pests of cruciferous vegetables. It occurs 10-15 generations a year in southern Zhejiang province, and generations of generations overlap with serious harm and strong resistance. In order to control the damage caused by the diamondback moth, I introduced the bio-pesticide 2.5% Sestamil from the Dow AgroSciences Company to control the field trials of the diamondback moth. The results are reported below. 1 materials and methods ① for the test agent 2.5% vegetable suspension agent 1000 times the liquid (the United States Dow AgroSciences production;