果树害虫的天敌种类较多 ,有哺乳动物、鸟禽类、两栖类、寄生蜂、寄生蝇、食虫昆虫、病菌及病毒等。要使天敌昆虫能有效地抑制害虫为害 ,需有足够的数量。增加天敌数量 ,除人工繁殖外 ,还应创造良好的环境 ,促进其自然繁殖。(1)少使用杀虫剂 ,必要时可用选择性强的药剂进行局部 Fruit tree pests species more natural enemies, mammals, birds and birds, amphibians, parasitic wasps, parasitic flies, insect insects, germs and viruses. To make natural enemy insects can effectively inhibit the pest damage, there must be a sufficient number. Increase the number of natural enemies, in addition to artificial breeding, but also create a good environment to promote their natural breeding. (1) less use of pesticides, if necessary, selective topical agents