几类药剂对大螟的室内毒力测定及田间防效评价  

Study on efficacy of several kinds of insecticides on the pink rice borer, Sesamia inferens(Walker),in laboratory and fields

作　　者：冯晓慧[1,2] 刘宝生[2] 郭慧芳[2] 方继朝[2] 

机构地区：[1]南京农业大学植物保护学院,江苏南京210095 [2]江苏省农业科学院植物保护研究所,江苏南京210014

出　　处：《南京农业大学学报》2011年第5期67-72,共6页Journal of Nanjing Agricultural University

基　　金：国家水稻产业技术体系项目(nyctx-001);公益性行业(农业)科研专项(200803004);江苏省农业科技创新资金重点项目(cx-08-606)

摘　　要：针对近年大螟种群显著上升、而主治药剂不明确的实际需要,在室内测定了不同类型化学药剂对大螟的卵和3龄幼虫触杀毒性以及对初孵幼虫的胃毒作用;在此基础上,对毒力高的两种药剂进行了田间防治试验。结果表明:室内测定的13种杀虫剂中,阿维菌素、高效氯氰菊酯、甲氨基阿维菌素苯甲酸盐(甲维盐)和康宽对3种虫态的杀虫活性均较高;田间试验表明,5%甲维盐水分散粒剂11.25 g.hm-2防治效果最佳,杀虫效果达95.54%,保穗效果为97.37%,20%康宽悬浮剂30 g.hm-2杀虫效果为89.61%,保穗效果为95.33%,均显著优于对照药剂40%毒死蜱乳油48 g.hm-2或92.1%杀虫单1 200 g.hm-2的相应防效。The toxicity of several kinds of chemical insecticides to the eggs,first instar larvae,and third instar larvae of pink rice borer,Sesamia inferens（Walker）,was respectively determined in laboratory conditions.The results showed that the toxicity of avermectins,beta cypermethrin,emamectin benzoate（banleptm）and chlorantraniliprole to the pink rice borer eggs,1st instar larvae,and 3rd instar larvae was evidently better than that of other tested insecticides.The field test showed the similar results that efficacy of dosage 11.25 g·hm-2 of emamectin benzoate 5% WG was 95.54% for control of the borer pests and 97.37% for control of damaged rice white heads（panicles）,the best among those of the four tested insecticides in paddy,and efficacy of dosage 30 g·hm-2 of chlorantraniliprole 20%SC was 89.61% for control of the borers and 95.33% for control of the rice white heads,much better than that of the control insecticide chlorpyrifos 40%EC at 48 g·hm-2 or monosultap 92.1%T at 1 200 g·hm-2.

关 键 词：大螟 药剂 毒力 防效 

分 类 号：S435.112.1[农业科学—农业昆虫与害虫防治] S482.3[农业科学—植物保护]