新型杀菌剂叶菌唑对小麦几种病害的室内毒力测定及应用  

New Fungicide Metconazole on the Determination of Toxicity of Several Kinds of Diseases in Wheat

作　　者：何莲[1] 李建明[1] 雷满香[1] 易正华[1] 白建军[1] 欧晓明[1] 

机构地区：[1]湖南化工研究院国家农药创制工程技术研究中心,长沙410007

出　　处：《农药》2014年第8期605-607,共3页Agrochemicals

基　　金：国家"十二五"攻关项目(2011BAE06B02-10)

摘　　要：【目的】验证叶菌唑对小麦病害的生物活性和防效。【方法】室内活性测定和大田试验方法，测定叶菌唑对小麦赤霉病菌、小麦白粉病菌和小麦锈病的活性。【结果】室内活性测定结果表明：叶菌唑对小麦赤霉病菌、小麦白粉病菌和小麦锈病有优异的杀菌活性，其EC50值分别为0．101、1．08、1．21mg／L，活性高于对照药剂己唑醇和三唑酮。田间小区试验结果表明，叶菌唑在30—90ga．i．／hm2的处理剂量下，施药1-2次，对小麦自粉病具有较好的防治效果，防效在85．72％-96．09％之间。【结论】为叶菌唑防治几种小麦病原菌的大田防治提供了剂量筛选依据。[Aims] The purpose of this study is to verify the efficacy of the metconazole on controlling several wheat pathogens. [Methods] The toxicity test in lab and control efficacy in the field were conducted for the evaluation. [Results] It showed that metconazole was a highly active fungicide against Gibberella zeae, Erysiphe graminis and Puccinia striformis with ECs0values of 0.101, 1.08 and 1.21 mg/L, respectively. The control effect of the metconazole was higher than hexaconazole and triadimefon. At the dose of 30-90 g a.i./ha, the activity of metconazole against wheat powdery mildew in field was 85.72-96.09%. [Conclusions] This study would provide the basis on dose screening for the field control efficacy of the metconazole against several wheat pathogens.

关 键 词：叶菌唑 小麦赤霉病菌 小麦白粉病菌 小麦锈病 防效 

分 类 号：S435.121.4[农业科学—农业昆虫与害虫防治]