7种不同药剂对小麦赤霉病、白粉病的综合防控评价

Comprehensive Control Efficacy of Seven Different Fungicides on Fusarium Head Blight and Wheat Powdery Mildew

为筛选出防治小麦赤霉病和白粉病的高效杀菌剂,在小麦抽穗扬花期对480 g/L氰烯·戊唑醇SC、30%氰烯·丙硫SC、40%丙硫·戊唑醇SC和20%氟唑菌酰羟胺SC+250 g/L丙环唑EC等7种杀菌剂开展了小麦赤霉病和白粉病的田间试验示范效果综合评价。结果表明,20%氟唑菌酰羟胺SC+250 g/L丙环唑EC、480 g/L氰烯·戊唑醇SC、30%氰烯·丙硫SC以及40%丙硫·戊唑醇SC对小麦赤霉病的防效较好,病穗防效和病指防效均超过90%。不同杀菌剂对白粉病的防效表现出一定差异,表现较好的杀菌剂有30%氰烯·丙硫SC 750 mL/hm^(2)、40%丙硫·戊唑醇SC 600 mL/hm^(2)、20%氟唑菌酰羟胺SC+250 g/L丙环唑EC(1050+450)mL/hm^(2),病指防效分别为84.43%、87.53%、86.14%。

In order to screen out effective fungicides against Fusarium head blight and wheat powdery mildew,the effects of 480 g/L phenamacril·tebuconazole SC,30%phenamacril·prothioconazole SC,40%prothioconazole·tebuconazole SC and 20%pydiflumetafen SC,etc.at heading and flowering stage of wheat were comprehensively evaluated in field.The results showed that 20%pydiflumetofen SC+250 g/L propiconazole EC,480 g/L phenamacril·tebuconazole SC,30%phenamacril·prothiocorazole SC and 40%prothioconazole·tebuconazole SC had good control effects on Fusarium head blight,and the control effect of diseased panicle and diseased index was more than 90%.The control effect of different fungicides on wheat powdery mildew was different.The control effect of 30%phenamacril·prothioconazole SC 750 mL/hm^(2),40%prothioconazole·tebuconazole SC 600 mL/hm^(2),20%pydiflumetafen SC+250 g/L propiconazole EC(1050+450)mL/hm^(2) were better.Efficacy of diseased index were 84.43%,87.53%and 86.14%,respectively.