冬季果树害虫进入休眠期,虫源集中,防治简单,省工省药,无药害、无污染,防治效果好,消灭一只越冬虫(卵)相当于夏季几十倍,因此应当高度重视冬季果树害虫的防治。现将72种苹果树害虫越冬形态、场所和防治方法简述如下,以供参考。一、在枝梢顶芽及其附近越冬害虫:1.越冬形态:以卵粒越冬的害虫有黄蚜、疣蚜;以幼虫越冬 Winter fruit pests into the dormant period, concentrated source of insects, simple control, provincial labor, no phytotoxicity, pollution prevention and control effect is good, eliminate one overwintering pests (eggs) is equivalent to several times in summer, so should attach great importance to winter Prevention of fruit pests. Now 72 kinds of apple tree pests overwintering morphology, place and prevention methods are summarized below, for reference. First, in the top shoots and shoots over the winter pests: 1. Overwintering morphology: the pests overwintering eggs with yellow aphids, wart aphids; overwintering larvae