农药科学与管理2026，Vol.47Issue(5)：52-55,4.
不同药剂不同时期防治玉米大斑病田间药效试验研究
Field Efficacy Analysis of Different Fungicides Applied at Various Growth Stages for Controlling Corn Northern Leaf Blight
杨雪竹 1文家富 1王亚红 2李宝功 1李慧玲 3李鑫晗 1田丽3
作者信息
- 1. 陕西省商洛市植保植检站,陕西 商洛 726000
- 2. 陕西省植物保护工作总站,陕西 西安 710016
- 3. 商南县农业技术服务中心,陕西 商南 726300
- 折叠
摘要
Abstract
In this study,five fungicides-mancozeb,pyraclostrobin,difenoconazole,tebuconazole,and pyraclostrobin·epoxiconazole were selected for field efficacy trials for controlling northern corn leaf blight by spraying at the small trumpet stage and the tasseling stage.The results showed that,when northern corn leaf blight had not yet occurred at the small trumpet stage,application of 70%mancozeb wettable powder(WP)had a certain protective effect,but the overall control efficacy was poor.Fungicides such as 25%pyraclostrobin suspension concentrate(SC),10%difenoconazole water dispersible granule(WG),430 g/L tebuconazole suspension concentrate(SC)and 35%pyraclostrobin·epoxiconazole suspension concentrate(SC)presented good control efficacy.The average control efficacy against northern corn leaf blight reached 63.59%～70.63%at 14 days after application and 74.91%～83.52%at 28 days after application.Under production conditions,the combined application of mancozeb with the other tested fungicides results in low cost,good control efficacy,and a long-persistence period.关键词
玉米/大斑病/药剂/防效Key words
corn/northern leaf blight/fungicide/control efficacy分类
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杨雪竹,文家富,王亚红,李宝功,李慧玲,李鑫晗,田丽..不同药剂不同时期防治玉米大斑病田间药效试验研究[J].农药科学与管理,2026,47(5):52-55,4.
