摘要
为探索苯醚甲环唑水分散粒剂对玉米大斑病防治的最佳施药时期,通过田间试验比较了在玉米拔节期、大喇叭口期、吐丝期喷施药剂的防治效果。结果表明,在玉米大喇叭口期喷施10%苯醚甲环唑水分散粒剂效果最好,病情指数和防治效果均显著高于对照和其他处理;大喇叭口期喷施后的穗粒数和千粒质量都最大,3个处理的穗粒数和千粒质量与对照相比均有显著差异;大喇叭口期和吐丝期喷施药剂后产量显著高于对照,但鉴于吐丝期植株高大,不便于喷施药剂,所以,建议在玉米大喇叭口期喷施10%苯醚甲环唑水分散粒剂防治玉米大斑病,如果错过了大喇叭口期,可以在玉米吐丝期进行防治。
To explore the suitable period to control the northern leaf blight of maize, Difenoconazole was selected as the experimental material, the effect of different treatments were compared through investigating disease index, control effect, characters of yield and yield after different spraying periods of maize jointing stage, large bell stage and silking stage. The result indicatd that there was the best effect when spraying Difenoconazole was at large bell stage, disease index and control effect were significant higher than CK and the other treatments, the grain number of ear and 1 000 grain weight were the biggest of all the treatments, had significant differences with CK at large bell stage, the yeild was significant higher than that of the CK at large bell stage and silking stage, but because the silking stage plants were tall, not easy to medicament spraying. So the suitable period to control the northern leaf blight of maize is the large bell stage,if you miss this period, you can recover some losses spraying at silking stage.
出处
《山西农业科学》
2016年第2期229-231,共3页
Journal of Shanxi Agricultural Sciences
基金
国家现代农业产业技术体系项目(CARS-02-62)
国家公益性行业(农业)科研专项(201203031)
关键词
玉米大斑病
苯醚甲环唑
施药时间
防效
northern leaf blight of maize
Difenoconazole
spraying time
control effect
