不同除草剂飞防玉米杂草试验研究

为研究不同除草剂对玉米田杂草的防效,采用田间药剂试验的方法,应用植保无人机,在玉米4~6叶期,进行茎叶处理;结果表明16%苯·硝·烟OF 750-1050 mL/hm^(2),30%苯唑草酮SC 60 mL/hm^(2)+750 g/L二甲四氯二铵盐AS 150 mL/hm^(2),30%硝·烟·莠去津OF 1500 mL/hm^(2),40%烟嘧·麦草畏WP 375 g/hm^(2)+25%硝磺·莠去津OF 1800 mL/hm^(2),在施药20 d时防效达到98%以上,对作物安全,为植保无人机在玉米田飞防除草提供理论依据。

In order to study the efficacy of different herbicides against weeds in corn fields,a field chemical trial was conducted by applying a plant protection drone and treating stems and leaves at the 4~6 leaf stage of corn;the results showed that 16%topramezone·mesotrione·nicosulfuron OF 750-1050 mL/hm^(2),30%topramezone SC 60 mL/hm^(2)+750 g/L Chipton AS 150 mL/hm^(2),30%nicosulfuron·mesotrione·atrazine OF 1500 mL/hm^(2),40%nicosulfuron·dicamba WP 375 g/hm^(2)+25%mesotrione·atrazine OF 1800 mL/hm^(2),the efficacy of control reached over 98%at 20 d of application and was safe for the crop,providing a theoretical basis for plant protection drones in corn fields for weed control.