白背飞虱对5种杀虫剂的敏感性测定  

Determination of Sensitivity of White-backed Planthopper to Five insecticides

作　　者：张胜平[1,2] 张松柏[2] 张德咏[2] 刘勇[2] 蔡立湘[2] 彭静[2] 罗源华[2] 

机构地区：[1]中南大学研究生院隆平分院,长沙410125 [2]湖南省农业科学院,长沙410125

出　　处：《农药》2011年第9期686-687,共2页Agrochemicals

基　　金：公益性行业(农业)科研专项(200903033)

摘　　要：[目的]为指导白背飞虱田间药剂使用,采用稻茎浸渍法测定了湖南省长沙市白背飞虱种群对5种杀虫剂的敏感性。[结果]白背飞虱对噻虫嗪、吡虫啉、噻嗪酮、烯啶虫胺、异丙威的敏感度(LC50)分别为0.026 1、0.053 4、0.088 4、0.175 9、27.366 1 mg/L。[结论]根据室内测定的敏感度以及药剂作用特性,在生产上可视白背飞虱发生情况,选择不同杀虫剂交替使用,以避免白背飞虱对杀虫剂敏感度的降低。[Aims] The aim is to provide a scientific evidence for controlling white-backed planthopper in field. [Methods] The sensitivity of the third instar nymph of white-backed planthopper population in Changsha to five insecticides was determinated by rice stem impregnation method. [Results] The results showed the sensitivity （LC50） of the test population to thiamethoxam, imidaelopdd, buprofezin, nitenpyram and isoprocarb was 0.0261, 0.0534, 0.0884, 0.1759 and 27.3661 mg/L, respectively. [Conclusions] Based on the determination of sensitivity, the five pesiticides tested could be alternately used to control white-backed planthopper in field, in order to avoid or delay the reduction of sensitivity to insecticides.

关 键 词：白背飞虱 稻茎浸渍法 敏感度 杀虫剂 

分 类 号：S435.112.3[农业科学—农业昆虫与害虫防治]