雪毒蛾越冬幼虫防治技术及防治指标研究

Study on the Control and Its Threshold of Overwintering Larva of Stilpnotia salicis

根据雪毒蛾ＳｔｉｌｐｎｏｔｉａｓａｌｉｃｉｓＬｉｎｎａｅｕｓ幼虫下树越冬，出蛰后经树干上树为害的活动特点，采用树干束草诱杀或选择强触杀性农药喷干的方法，进行早期防治，同时研究出杨树不同径级条件下的越冬代幼虫防治指标为１１６ｘ—３５８（诱集头／株）。

Stilpnotia salicis larva has the movable character of overwintering under the hosted trees and feeding on the trees after hybernation,so on the trunk straw-tying is used to attracting or high contact poisoning pesticides used to spray for larva’s early control.It is found that the control threshold of the overwintering larva under different diameters is 116x-356(attracting number/ per zhu ).