莱蚜是我市郊区十字花科蔬菜上的主要害虫之一。它不仅直接危害蔬菜,还传播毒素病。1980年全郊区5939亩秋菜,因受菜蚜和毒素病的危害,减产178万斤左右。为了减轻菜蚜的危害,保证蔬菜安全生长,我所从1981年起,对菜蚜的发生规律和防治方法进行了研究。 菜蚜种类和发生概况 我市郊 Lephricidae is one of the major pests on cruciferous vegetables in the suburbs of our city. It not only directly endangers vegetables but also spreads toxin disease. In the whole suburbs of 5939 acres of autumn vegetables in 1980, due to the damage caused by aphids and toxins, reduced production of about 178 million pounds. In order to reduce the harm of vegetable aphids and ensure the safe growth of vegetables, we started from 1981 on the occurrence and control methods of aphids. Vegetable aphids species and occurrence profile of my suburbs