阿拉善舌喙象药剂防治初报

Preliminary Report on the Chemical Control of Diglossotrox alashanicus

应用40%杀扑磷(EC)、25 g·L^-1高效氯氟氰菊酯(EC)、77.5%敌敌畏(EC)+40%氧化乐果(EC)、5%甲氨基阿维菌素(微乳液)5种药剂及其组合液,采用植株喷雾、植株和地面喷雾两种方法对阿拉善舌喙象进行防治试验,试验结果表明:5种药剂及组合液施用后阿拉善舌喙象虫口数量均有减少,以77.5%敌敌畏(EC)+40%氧化乐果(EC)防治效果最好,25g·L^-1高效氯氟氰菊酯(EC)次之,防治效果达76.8%以上,施药20d后,平均危害率降低至8.33%以下,植株和地面喷雾能够有效地提高防治效果。

The application of 5 agents and their combinations,Methidathion E.C.(40%),Lambda-cyhalothrin E.C.25 g·L^-1,Dichlorvos E.C.(77.5%)+Omethoate E.C.(40%),Emamectin(5%)(microemulsion),and two methods of spraying——plant and ground spraying,were applied to test the effect of control of Diglossotrox alashanicus Suvrov,the results showed after the application of 5 agents and their combinations,the population of Diglossotrox alashanicus Suvrov were declined.The best control effect was by Dichlorvos E.C.(77.5%)+Omethoate E.C.(40%),followed by Lambda-cyhalothrin E.C.25 g·L^-1.The control effect on average was more than 76.8%,and the average hazard rate was lower than 8.33%after 20 d of application.Plant and ground spraying could effectively improve the control effect.