杨尺蠖发生规律与防治

杨尺蠖(Apocheima cinerarus Ersohoff)在山西北部地区种群动态处于上升趋势,为控制蔓延,减少经济损失,对其发生规律进行了研究,并做了防治试验。成虫期用溴氰菊酯30倍液毒环防治效果90%以上;毒笔防治效果92%以上。幼虫期用溴氰菊酯150倍液毒环防治效果达93.4%;使用1.7×10~7PIB/ml 多角体病毒(NPV)制剂,笫9天死亡率达100%。

THE OCCURRENCE AND CONTROL OF MULBERRY LOOPER

Mulberry looper,Apocheima cinerarius Erschoff is one important pest of poplar trees.Its population is tending to rise in the northern region of Shanxi Province.In order to control its infestation and to decrcase the oconomic loss caused by this pest,some control measures were taken.In the adult stage,painting toxic rings around the base of poplar stems with 30 times solution of Decamefhrin can control 90%;using toxic chalk with Decmefhrin to paint ring around the stem can control 92%.In the larval stage,the control effectiveness of painting toxie ring with 150 times solution of Decamefhrin can reach 93.4%.Spraying NPV with 1.7×10~7 PIB/ml,the pest mortality is 100% by 9 days.