化学农药对玉米中后期几种病虫害的田间防治效果  

Control Effect of Chemicals on Several Diseases and Pests of Maize in the Middle and Later Growing Periods in Field

作　　者：刘翠娜[1] 邢小萍[1] 李洪连[1] 袁虹霞[1] 

机构地区：[1]河南农业大学植物保护学院,郑州450002

出　　处：《河南科学》2014年第4期527-530,共4页Henan Science

基　　金：河南省现代农业产业技术体系项目(S2010-02-G05);十二五粮丰工程项目(2012BAD04B07)

摘　　要：在玉米抽雄期喷施化学农药防治玉米生长中后期的几种病虫害,结果表明,40%氯虫·噻虫嗪WG 225 g/hm2剂量对玉米螟虫和蚜虫均有较高的防治效果,田间防效分别为81.08%和89.91%,小区产量比对照增加20.8%.10%吡虫啉WP 450 g/hm2剂量对蚜虫的防效为63.64%,对玉米螟虫效果较差.12.5%烯唑醇WP 450 g/hm2剂量对玉米锈病的防效为76.60%.30%苯甲·丙环唑对小斑病和弯孢霉叶斑病的防效分别为62.04%和51.72%.氯虫·噻虫嗪与烯唑醇混合喷施对中后期的玉米螟虫、蚜虫和锈病具有较好的控制作用.The chemicals were sprayed to control maize borer,Rhopalosiphum spp.,Bipolaris maydis,Curvularia lunata,Puccina polysora of maize in the middle and later growing periods. The result indicated that 40%Chlorantraniliprole·Thiamethoxam WG 225 g/hm2 had better effect to maize borer and Rhopalosiphum spp.,the control effects were 81.08% and 89.91%,respectively. The plot yield increased 20.8% than that of the contrast averagely. The control effect of 10%Imidacloprid WP 450 g/hm2 dosage to Rhopalosiphum spp. reached 63.64%, but almost had no effect to maize borer. The control effect of 12.5%Diniconazole WP 450 g/hm2 to Puccinia polysora reached 76.60. The 30% Difenoconazole·Propiconazole EC had higher control effect to Bipolaris maydis and Curvularia lunata,the control effects were 62.04% and 51.72,respectively. The mixed usage of Chlorantraniliprole· Thiamethoxam and Diniconazole could control maize borer,Rhopalosiphum spp. and Puccina polysora of maize effectively.

关 键 词：玉米 玉米螟虫 蚜虫 叶部病害 农药 防效 

分 类 号：S481.9[农业科学—农药学]