卵叶小蜡叶蜂的初步研究

卵叶小蜡叶蜂是卵叶小蜡和女贞的重要害虫之一 ,在福建晋江 1a发生 2代 ,以老熟幼虫在土中土茧内越冬。卵单产于叶背边缘 ,幼虫取食嫩叶 ,可吃尽嫩梢 ,甚至整枝条 ,影响卵叶小蜡等植物的观赏价值。在室内对 2～ 5龄幼虫喷洒 40 %乐果乳油 2 0 0 0倍液或 30 0 0倍液、80 %敌敌畏乳油 2 0 0 0倍液或 30 0 0倍液、90 %敌百虫晶体的 10 0 0倍液或 12 0 0倍液均能获得良好的防治效果 (死亡率达 82 5 %～ 95 % )。

A Preliminary Study on Tenthredo sp.

Tenthredo sp.is one of the important pests damaging Ligustrum sinense and L.lucidum. It has two generations each year in Jinjiang,Fujian Province,its mature larvae live within cocoons in the soil through winter,its eggs are laid on edges of the leaf back,and its larvae eat tender leaves,even whole branches,which affects the ornamental value of L.sinense,etc.The control effects of spraying the 2nd to 5th instar larvae are good (the death rate reaches 82.5%～95%) with 2000 fold or 3000 fold solution of 40% of rogor emulsifiable concentrate,2000 fold or 3000 fold solution of 80% of DDVP emulsifiable concentrate,and 1000 fold or 1200 fold solution of 90% of dipterex crystal.