3种杀虫剂对桉树绢织蛾的防治效果

The Control Effect of Three Pesticides on Eucalyptus Robusta Scythropiodes

为明确棒束孢菌粉、1.8%阿维菌素可湿性粉剂、棒束孢菌粉和1.8%阿维菌素可湿性粉剂复合制剂对桉树害虫绢织蛾的防治效果,选取4块相对独立的桉树林进行3种药剂试验和1组对照处理试验,喷药方式采取直升机为主无人机为辅的方式。防治结果表明:药剂处理的桉树林的活虫率均低于对照处理的桉树林,棒束孢菌粉防治的桉树林活虫率为24%,1.8%阿维菌素可湿性粉剂防治的桉树林活虫率为49.2%,两种杀虫剂复合制剂防治的桉树林活虫率为36.6%,对照处理的桉树林活虫率为88.7%;棒束孢菌粉对绢织蛾的防治效果最好,达72.9%。因此,3种杀虫剂对桉树害虫绢织蛾均有一定的防治效果,其中棒束孢菌粉可作为防治优选药剂。

In order to determine the control effects of Isaria farinosa,1.8%avermectin wettable powder,the composite preparation of Isaria farinosa and 1.8%avermectin wettable powder on the Eucalypt robusta pest sericornis.Four relatively independent Eucalyptus robusta are selected to carry out three pesticides and a group of control treatment experiments,the spraying method is mainly helicopter and supplemented by UAV.The results of prevention show that the rate of live insects in agent-treated with insecticides Eucalyptus robusta are lower than that in control-treated group,the rate of live insect in Eucalyptus robusta controlled by Isaria farinosa is 24%,the rate of live insect in Eucalyptus robusta controlled by 1.8%Avermectin wettable powder is 49.2%,the rate of live insect in Eucalyptus robusta controlled by composite preparation of Isaria farinosa and 1.8%avermectin wettable powder is 36.6%,the rate of live insect in the control group is 88.7%;The control effect of Isaria farinosa on Scythropiodes is the best up to 72.9%.Therefore,Three insecticides have certain control effect on the Eucalyptus robusta pest Scythropiodes,among them,Isaria farinosa can be used as an optimal pesticide for control.