缓释长效施药技术对烟草根结线虫病的防控效果  

Prevention and Control Effect of Slow-release and Long-acting Pesticide Application Technology on Meloidogyne incongnita

作　　者：李熙全 代飞 周波 李沛柏 左锐[2] LI Xiquan;DAI Fei;ZHOU Bo;LI Peibai;ZUO Rui(Ashun Branch Company,Guizhou Tobacco Company,Anshun,Guizhou 561000;Institute of Bio-technology,Guizhou Academy of Agricultural Sciences,Guiyang,Guizhou 550006,China)

机构地区：[1]贵州省烟草公司安顺市公司,贵州安顺561000 [2]贵州省农业科学院生物技术研究所,贵州贵阳550006

出　　处：《贵州农业科学》2018年第12期52-54,共3页Guizhou Agricultural Sciences

基　　金：贵州省烟草公司安顺市公司科技项目"不同移栽方式烟草根结线虫病发生规律及综合防治技术研究"(201417)

摘　　要：为生产上烟草根结线虫病的防治提供技术支撑,采用直接触杀法测定阿维菌素、甲胺基阿维菌素苯甲酸盐和噻唑膦3种单剂对根结线虫室内活性的影响,用田间试验方法研究2%阿维菌素、2%甲胺基阿维菌素苯甲酸盐和10%噻唑膦3个单剂及其分别与缓释剂复配对烟草根结线虫的防治效果。结果表明:噻唑磷对烟草根结线虫2龄幼虫毒力最强,24h、48h的LC_(50)分别为28.83mg/L和20.71mg/L,LC_(95)分别为143.27mg/L和134.12mg/L;阿维菌素和甲胺基阿维菌素苯甲酸盐对烟草根结线虫2龄幼虫毒力相当。2%阿维菌素、2%甲胺基阿维菌素苯甲酸盐和10%噻唑膦3种药剂与缓释剂复配,在田间的防效分别较单剂提高9.65%、15.91%和12.62%,药剂用量减少50%。缓释长效施药技术能有效提高药剂对烟草根结线虫病的防控效果,减少药剂用量,降低防治成本。The effect of Abamectin,Emamectin benzoate and Fosthiazate on indoor activity of Meloidogyne incongnita was studied by a direct contact method and then the control of 2% Abamectin,2% Emamectin benzoate,10% Fosthiazate,2% Abamectin+sustained release preparation,2% Emamectin benzoate+sustained release preparation and 10% Fosthiazate+sustained release preparation against M.incongnita was determined by a field experiment to provide the technological support for prevention and control of M.incongnita in flue-cured tobacco production.Result:The toxicity of Fosthiazate against M.incongnita larva with second instar stage is the highest among three pesticides.The LC 50 is 28.83 mg/L and 20.71 mg/L after 24 h,and 143.27 mg/L and 134.12 mg/L after 48 h respectively.The toxicity of Abamectin against M.incongnita larva with second instar stage is no different with Emamectin benzoate.The prevention and control effect of 2% Abamectin+sustained release preparation,2% Emamectin benzoate+sustained release preparation and 10% Fosthiazate+sustained release preparation against M.incongnita in field is 9.65%,15.91%and 12.62%higher than 2% Abamectin,2% Emamectin benzoate and 10% Fosthiazate respectively and the pesticide dosage can decrease by 50%.The slow-release and long-acting pesticide application technology can improve the prevention and control effect of pesticides,decease pesticide dosage and reduce its control cost in prevention and control of M.incongnita effectively.

关 键 词：缓释长效施药技术 烟草根结线虫 防控效果 

分 类 号：S435.72[农业科学—农业昆虫与害虫防治]