几种药剂防治星天牛的比较研究

目的]筛选防治星天牛的理想药剂。方法]在星天牛成虫羽化初期用药,研究15%吡虫啉微胶囊剂、50%杀螟硫磷EC、80%敌敌畏EC对多年生三角枫、柳树等树木上星天牛的防治效果。结果]15%吡虫啉微胶囊剂在树冠和主干均匀喷雾对星天牛成虫的防效好于50%杀螟硫磷EC、80%敌敌畏EC。施用15%吡虫啉微胶囊剂4 000、3 000倍液,药后1 d树冠下死亡的星天牛成虫数分别为2.50、4.75头,药后3 d分别为3.50、5.25头,药后30 d对星天牛幼虫的防效分别为89.3%、91.3%,药后60 d对星天牛幼虫的防效分别为91.3%、92.9%。结论]15%吡虫啉微胶囊剂是防治星天牛较理想的药剂。

Comparative Experiment on Controlling Anoplophora chinensis on the Trees Such As Buerger maple with Several Insecticides

Objective] The aim was to screen the perfect insecticides for controlling Anoplophora chinensis.Method] The insecticides were applied in the early eclosion stage of A.chinensis adult to study the control effects of 15% Imidacloprid microcapsule,50% Fenitrothion EC and 80% Dichlorvos EC on A.chinensis on the trees such as perennial Buerger maple,willow and so on.Result] The control effect of 15% Imidacloprid microcapsule on A.chinensis adult by uniformly spraying on the crown and main stem of tree was better than that of 50% Fenitrothion EC and 80% Dichlorvos EC.After the application of 15% Imidacloprid microcapsule solution diluted 4 000 and 3 000 times,the quantities of dead A.chinensis adults under tree crown were 2.50 and 4.75 resp.in 1 d and 3.50 and 5.25 resp.in 3 d;its control effects on A.chinensis laver were 89.3% and 91.3% resp.in 30 d and 91.3% and 92.9% resp.in 60 d.Conclusion] 15% Imidacloprid microcapsule was the relatively perfect insecticide for controlling A.chinensis.