几种药剂防治玉米大斑病的田间药效试验  

Control Effects of Several Reagents for Northern Leaf Blight of Maize in Field

作　　者：沙洪珍 迟畅[2] 何智勇[2] 马巍[2] 沙洪林[2] 

机构地区：[1]吉林省畜牧业专科学校,吉林白城137000 [2]吉林省农业科学院农业资源与环境研究所,长春130033

出　　处：《东北农业科学》2017年第6期36-37,共2页Journal of Northeast Agricultural Sciences

基　　金：吉林省科技攻关计划(2015GJLS001NY;20170412029XH)

摘　　要：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。Aiming to screen a suitable reagent to control the northern leaf blight of maize in field, control effects of propiconazole, azoxystrobin, propiconazole-azoxystrobin, coumoxystrobin-tebuconazole, coumoxystrobin-tebucon- azole and azoxystrobin were compared through experiments. The results showed no phytotoxicity was observed to maize after applying propiconazole at 168.8 g/ha, azoxystrobin 300 g/ha, propiconazole-azoxystrobin 196.4 g/ha, coumoxystrobin-tebuconazole 180 mL/ha, coumoxystrobin-tebuconazole 180 mL/ha and azoxystrobin 300 g/ha ac- cording to the effective component, the control effects were 77.35%, 77.11%, 78.13%, 74.60% and 80.94% respec- tively for two times. Considering the production factors, the reagents of propiconazole-azoxystrobin 196.4 g/ha and the reagents of coumoxystrobin-tebuconazole 180 mL/ha and azoxystrobin 300 g/ha were suggested, and better ef- fect was achieved before the onset or the initial infection stage for early prevention and control.

关 键 词：丙环唑 嘧菌酯 丁香·戊唑醇 丙环·嘧菌酯 玉米大斑病 防治 

分 类 号：S48[农业科学—农药学]