[Objective] The paper was to screen suitable agents for controlling northern leaf blight of maize in field. [Method] Field efficacy test was conducted using the agents of propiconazole, azoxystrobin, propiconazole...[Objective] The paper was to screen suitable agents for controlling northern leaf blight of maize in field. [Method] Field efficacy test was conducted using the agents of propiconazole, azoxystrobin, propiconazole·azoxystrobin, coumoxystrobin·tebuconazole, coumoxystrobin·tebuconazole and azoxystrobin. [Result] At 14 d post secondary spraying, the control effects of 25% propionazole EC 168.8 g/hm^2, 25% azoxystrobin SC 300 g/hm^2, 18.7% propiconazole·azoxystrobin SC 196.4 g/hm^2, 40% coumoxystrobin·tebuconazole SC 180 m L/hm^2, 40% coumoxystrobin·tebuconazole SC 180 m L/hm^2＋ 25% azoxystrobin SC 300 g/hm^2 against northern leaf blight of maize were 77.35%, 77.11%, 78.13%, 74.60% and 80.94%, re-spectively. The agents were safe and harmless to maize. [Conclusion] Considering the production factors, 18.7% propiconazole·azoxystrobin SC196.4 g/hm^2 or 40% coumoxystrobin·tebuconazole SC 180 m L/hm^2＋ 25% azoxystrobin SC 300 g/hm^2 can be sprayed in production before the incidence or in the initial incidence of northern leaf blight of maize.展开更多
为筛选防治玉米大斑病适宜药剂,通过田间试验进行丙环·嘧菌酯等4种药剂田间药效试验。结果表明:25%丙环唑乳油168.8 g/hm^2、嘧菌酯悬浮剂300 g/hm^2、丙环·嘧菌酯悬浮剂196.4 g/hm^2、丁香·戊唑醇悬浮剂180 m L/hm^2、...为筛选防治玉米大斑病适宜药剂,通过田间试验进行丙环·嘧菌酯等4种药剂田间药效试验。结果表明:25%丙环唑乳油168.8 g/hm^2、嘧菌酯悬浮剂300 g/hm^2、丙环·嘧菌酯悬浮剂196.4 g/hm^2、丁香·戊唑醇悬浮剂180 m L/hm^2、丁香·戊唑醇悬浮剂180 m L/hm^2+嘧菌酯悬浮剂300 g/hm^2等5个处理2次施药后对玉米大斑病的防治效果分别为77.35%、77.11%、78.13%、74.60%和80.94%,对玉米安全、无药害;结合产量因素,在生产上防治大斑病宜采用丙环·嘧菌酯悬浮剂196.4 g/hm^2或丁香·戊唑醇悬浮剂180 m L/hm^2+嘧菌酯悬浮剂300 g/hm^2为佳,建议在发病前或发病初期及早用药防治。展开更多
基金Supported by National Key Research and Development Program"Scientific and Technological Innovation in Food Production"(2017YFD0300606)Science and Technology Development Project of Jilin Province(20170412029XH)
文摘[Objective] The paper was to screen suitable agents for controlling northern leaf blight of maize in field. [Method] Field efficacy test was conducted using the agents of propiconazole, azoxystrobin, propiconazole·azoxystrobin, coumoxystrobin·tebuconazole, coumoxystrobin·tebuconazole and azoxystrobin. [Result] At 14 d post secondary spraying, the control effects of 25% propionazole EC 168.8 g/hm^2, 25% azoxystrobin SC 300 g/hm^2, 18.7% propiconazole·azoxystrobin SC 196.4 g/hm^2, 40% coumoxystrobin·tebuconazole SC 180 m L/hm^2, 40% coumoxystrobin·tebuconazole SC 180 m L/hm^2＋ 25% azoxystrobin SC 300 g/hm^2 against northern leaf blight of maize were 77.35%, 77.11%, 78.13%, 74.60% and 80.94%, re-spectively. The agents were safe and harmless to maize. [Conclusion] Considering the production factors, 18.7% propiconazole·azoxystrobin SC196.4 g/hm^2 or 40% coumoxystrobin·tebuconazole SC 180 m L/hm^2＋ 25% azoxystrobin SC 300 g/hm^2 can be sprayed in production before the incidence or in the initial incidence of northern leaf blight of maize.
文摘为筛选防治玉米大斑病适宜药剂,通过田间试验进行丙环·嘧菌酯等4种药剂田间药效试验。结果表明:25%丙环唑乳油168.8 g/hm^2、嘧菌酯悬浮剂300 g/hm^2、丙环·嘧菌酯悬浮剂196.4 g/hm^2、丁香·戊唑醇悬浮剂180 m L/hm^2、丁香·戊唑醇悬浮剂180 m L/hm^2+嘧菌酯悬浮剂300 g/hm^2等5个处理2次施药后对玉米大斑病的防治效果分别为77.35%、77.11%、78.13%、74.60%和80.94%,对玉米安全、无药害;结合产量因素,在生产上防治大斑病宜采用丙环·嘧菌酯悬浮剂196.4 g/hm^2或丁香·戊唑醇悬浮剂180 m L/hm^2+嘧菌酯悬浮剂300 g/hm^2为佳,建议在发病前或发病初期及早用药防治。
