蔬菜叶虫即蔬菜食叶类害虫。危害蔬菜叶部的害虫有菜青虫、叶螨、蓟马、蚜虫、潜叶蝇等。这些害虫危害蔬菜后,不但造成减产,而且影响蔬菜的品质,降低商品价值。一、农业防治1.清洁田园。蔬菜收获后,及时处理残株败叶;结合中耕打去老叶、黄叶,间去病虫苗,并带出田外处理;冬季深耕土地,铲除杂草,可消灭大量虫口。2.合理布局。如避免十字花科蔬菜连坐或邻作,可减轻小菜蛾、跳甲等虫害的为害。二、物理机械防治1.诱杀成虫。利用成虫的趋光性和趋化性,可用黑光灯和糖醋液诱杀;或用性诱剂诱杀雄虫。 Vegetable leaf pest that vegetables leafy pests. Insects harmful to the leaf of vegetables cabbage caterpillar, spider mite, thrips, aphids, leaf miner and so on. When these pests endanger vegetables, they not only reduce production, but also affect the quality of vegetables and the value of their products. First, agricultural control 1. Clean the pastoral. Vegetables harvest, the timely treatment of stubborn leaves; combined with cultivating to the old leaves, yellow leaves, between the disease and insects, and out of the field processing; deep plowing the land in winter to eliminate weeds, eliminate a large number of insects. 2. Reasonable layout. Such as cruciferous vegetables to avoid sitting or adjacent to, can reduce the diamondback moth, hopper and other pests damage. Second, the physical and mechanical control 1. Trapping adult. Use adults phototaxis and chemotaxis, black light and sweet and sour sauce can be used to trap; or sexual lure trapping male.