铜色花椒跳甲生物学特性及其防治研究

铜色花椒跳甲(Podagricomela cuprea Waog)是近年来在陇南山区首次发现危害花椒的新害虫。据室内饲养和田间定点观察,该虫1年发生1代,以成虫越冬,翌年4月中旬出蛰活动。4月底至5月中旬,幼虫蛀食花椒聚伞状花序梗、羽状复叶柄和幼嫩果实,致使花椒减产,甚至绝收。田间药剂防治试验表明,应用杀灭菊酯4000—5000倍液,水胺硫磷、杀螟松等1000—1500倍液,于4月下旬花椒现蕾期喷洒,保叶效果90％左右,保花效果达95％以上,大田防治示范证明,增产效果好,经济效益显著。

ON THE BIONOMICS AND CONTROL OF AMUR SILVERGRASS STEM BORER PODAGRICOMELA CUPREA WANG

Based on laboratory rearing record and field observation on fixedplace,there was one generation a year of Amur silvergrass stem borerPodagricomela cuprea Wang,a new insect pest of ash Xanthoxylum hun-geanum Maxim found for the first time a few years ago in Longnanmountain area.The adult over intered and terminated hibernation inmiddle April.The larvae bored into and damaged the pedicel of inflo-rescence,leaf stalk,and young fruit from late April to middle May,caused yield reduction severely. The application of Sumicidin,fenitrothion,and omethoate in flow-er bud stage,in late April,got excellent protection results for leafand flower,the decreased rates of damage were up to 90% and 95%,respectively.Field demonstration showed good effect on yield increaseand economic benifit