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十、以虫治虫昆虫中有许多危害蔬菜生产的害虫,也有许多保护蔬菜不受或少受害虫侵袭的益虫。利用这些天敌益虫杀虫不仅可以少用农药、减少施药用工和用药投资,而且无污染、无残毒,促进增产、增收。一是瓢虫。瓢虫是蚜虫的天敌,1只瓢虫成虫1天能吃掉100～200头蚜虫。瓢虫靠取食?
X. Insect pests There are many insect pests that endanger the production of vegetables. There are also many beneficial insects that protect the vegetables against or less affected by pests. Use of these natural enemies insecticide insecticide not only can reduce the use of pesticides, reduce the investment of labor and medication investment, but also pollution-free, non-toxic, and promote increased production and income. First, ladybugs. Ladybug is a natural enemies of aphids, a ladybug adult 1 day to eat 100 to 200 aphids. Ladybug feeding?