菜青虫是凌海市十字花科蔬菜发生比较严重的一种害虫,主要为害甘蓝、菜花、白菜、萝卜、油菜等蔬菜。它发生代数多,危害期长,抗药性强,严重影响蔬菜的产量及质量。1试验设计1.1药剂。试验药剂为40%毒死蜱·仲丁威乳油,对照药剂为1%甲维盐和40%毒死蜱乳油。1.2供试作物。白菜。1.3施药方法。全株处理,白菜7~8叶期,菜青 Pieris rapae Linghai cruciferous vegetables is a serious occurrence of pests, the main damage to cabbage, cauliflower, cabbage, radish, rape and other vegetables. It occurs many generations, long-term harm, strong resistance, seriously affecting the yield and quality of vegetables. 1 trial design 1.1 Pharmacy. The test agents were 40% chlorpyrifos-sec-butyl-EC and the control agents were 1% a-Dimet and 40% chlorpyrifos EC. 1.2 for the test crop. Chinese cabbage. 1.3 application method. Whole plant processing, cabbage 7 to 8 leaf stage, green vegetables