慈溪市７～９月份正值高温干旱，并常伴有台风暴雨，是蔬菜供应淡季。此时，突发性害虫较多，特别是小菜蛾、甜菜夜蛾等抗药性较强的害虫为害猖獗，菜农用药次数增多，上市蔬菜往往达不到安全间隔期。为提高菜地抗灾能力，减少蔬菜农药污染，控制害虫对叶菜的为害，笔者于... From July to September in Cixi, it was a hot and dry season with frequent typhoon torrential rain, which is the low season for vegetable supply. At this moment, there are more sudden pests, especially the more resistant pests such as the diamondback moth and the beet armyworm. The number of pesticides used by the vegetable farmers is increased, and the vegetables often fail to reach the safety intervals. In order to improve the resilience of vegetable fields, reduce the pollution of vegetable pesticides, pest control on the damage of leafy vegetables, the author in ...