宁乡白背飞虱对常用杀虫剂的敏感性研究  

Study on Sensitivity of Sogatel lafurcifera to Commonly Used Insecticides in Ningxiang

作　　者：刘新伟[1] 徐灵超[1] LIU Xin-wei;XU Ling-chao(Extension Center of Ningxiang Agriculture Technology, Ningxiang 410600, PRC)

机构地区：[1]宁乡县农业技术推广中心,湖南宁乡410600

出　　处：《湖南农业科学》2016年第11期52-54,共3页Hunan Agricultural Sciences

基　　金：2016长沙市"两迁"虫害等重大病虫应急防控专项

摘　　要：为掌握目前宁乡白背飞虱对常用化学药剂的敏感性,采用稻茎浸渍法测定了宁乡白背飞虱若虫对烟碱类杀虫剂(吡虫啉、噻虫嗪、呋虫胺和烯啶虫胺)、生长调节剂(噻嗪酮)、吡啶杂环类(吡蚜酮)和有机磷类(毒死蜱)7种常用杀虫剂的敏感性。结果表明:烟碱类杀虫剂对白背飞虱的敏感性优于生长调节剂、吡啶杂环类和有机磷类,7种杀虫剂对白背飞虱敏感性由强到弱依次为噻虫嗪>烯啶虫胺>吡虫啉>呋虫胺>吡蚜酮>毒死蜱>噻嗪酮,其中敏感性最好的噻虫嗪,对白背飞虱LC_(50)为0.217 5 mg/L,噻嗪酮敏感性最差,LC_(50)为1.476 0 mg/L。In order to know well the current Sogatel lafurcifera to common chemical sensitivity, the rice stem dipping method was used to determine the sensitivity of Sogatel lafurcifera nymph to nicotinic insecticide (imidacloprid, thiamethoxam, dinotefuran and nitenpyram),growth regulator (buprofezin), pyridine heterocyclic (pymetrozine) and organic phosphorus (chlorpyrifos). The results show that the neonicotinoid insecticide was more sensitive than growth regulator, pyridine heterocyclic and organic phosphorus, 7 kinds of insecticidesto sogatellafurcifera sensitivity from strong to weak was: thiamethoxam> nitenpyram> imidacloprid> dinotefuran> pymetrozine>chlorpyrifos> buprofezin, the best sensitivity was thiamethoxam, the toxicity LC50 was 0.217 5 mg/L, the worst sensitivity was buprofezin,the toxicity LC50 was 1.476 0 mg/L.

关 键 词：白背飞虱 杀虫剂 敏感性 宁乡 

分 类 号：Q945.78[生物学—植物学]