松阿扁叶蜂发生规律及防治技术研究

在研究松阿扁叶蜂的发生危害、生活史、主要习性及发生规律的基础上，从7种不同药剂中筛选出了5种防治该虫的有效药剂和最佳使用浓度：用8％绿色威雷300倍液防治出蛰成虫，防效达93．58％；用40％氧化乐果乳油、25％灭幼脲Ⅲ号胶悬剂1500倍液防治3龄前幼虫，防效分别达91．35％和95．34％；利用2．5％敌杀死乳油4000倍液防治3龄后大幼虫，防效为96．62％；在郁闭度0．7以上的林分，用22．5kg／hm^2林丹烟剂防治树上幼虫，防效达97．96％。

Study on Occurrence Law of Acantholyda posticalis and Its Techniques

Based on the studies on damages, Life Span, main living habits and occurrence law of Acantholyda posticalis. 5 kinds of more effective medicaments and optimal using concentration are chosen from 7 kinds of medicaments. The control effect of 8.0% Cypermethrin with concentration of 300 on imagoes is 93.58%. Among them, the control effects of 40% Omethoate and 25% Chlorbenzuron with concentration of 1 500 on larvae before 3 instar are 91.35% and 95.34% respectively. The control effect of 2.5% Deltamethrin with concentration of 4 000 on larvae after 3 instar is 96.62%. The control effect of 22.5 kg/hm~2 Lindsn on larvae in trees with over 0.7 closing degree forest stems is 97.96%.