1、挖蛹灭虫。“冬灭一只蛹,夏少万条虫”。挖蛹时期应选择主要消灭越冬蛹,此时蛹期长,化蛹场所相对集中,需要注意,如挖到有天敌寄生的蛹,最好放回原处,便于天敌繁殖。夏季灭蛹可以利用部分老熟幼虫沿树干爬到地面化蛹的习性,在林木主干上绑付草把,待美国白蛾幼虫全部下树后在将带有虫体的草把 1, pupae pest control. “Winter off a pupa, summer less million worms.” Pupae pupae should be chosen to eliminate the overwintering pupae. At this time, the pupal period is long and the pupae are relatively concentrated. It should be noted that if pupae parasitized by natural enemies are dug, it is better to put them back in place to facilitate the reproduction of natural enemies. In the summer, the pupae can take advantage of the habit of some mature larvae crawling along the trunk to ground the pupa, and bind the grass on the trunk of the tree. When all the American white moth larvae are under the tree,