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果树害虫防治一般采用喷药法。此法虽然有一定的防治效果,但会造成环境污染或人畜中毒。以下3种方法则无此弊端。一、树干涂药法。可防治山楂、樱桃等果树的蚜虫、金花虫、红蜘蛛和介壳虫等。即在距地面1米～1．5米处树干上
Pest control fruit trees generally use spray method. Although this method has a certain control effect, but it will cause environmental pollution or human and animal poisoning. The following three methods do not have this drawback. First, the trunk Tu medicine. Can control hawthorn, cherry and other fruit trees aphids, gold flower insects, spider mites and scale insects and so on. That is, 1 meter to 1.5 meters above the ground at the trunk