【摘要】 <正> 光肩星天牛(Anoplophora glabripennis)危害杨、柳、榆、悬铃木、苦楝、元宝枫、七叶树、鸡爪槭、樱花、李等多种树木(柳树受害尤烈),是江、浙园林的重要蛀干害虫。据1983年对杭州西湖风景区中的苏堤、孤山、曲院风荷等公园风景点的调查,柳树的株被害率达90％以上,其中又以垂柳(Salix baylonica)的被害率最高。该虫以幼虫在韧皮部和木质部蛀食,形成长短不一的隧道,影响水分和养分的输送,轻则引起树势衰弱,出现枯梢、枯枝以及易遭风折等,重则造成全诛枯死。更多还原

【Abstract】 In 1984-1985, several tree-borer-killing insecticides were tested for their toxicity to Anoplophora glabripennis (Motschulsky), which causes serious damage to the willow trees in the scenic sites of the West Lake, Hangzhou. The experiments showed that spraying of the trunks and twigs with 20 % "8302" and 10 % "8310" emulsions (diluted to a concentration of 0.25 % with water) usually resulted in 95 % mortality. It was clear that these two insecticides were much more effective in killing the borer than the other insecticides tested, and their effects were not affected by the diameter of the trunks and twigs.更多还原