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为了准确掌握53%烟嘧·莠去津WP玉米田苗后化学除草的效果及对玉米的安全性,确定适宜的施药时期、施药方法和使用剂量,为生产应用提供科学依据,2009年进行了53%烟嘧·莠去津WP玉米田苗后除草药效试验。结果表明:53%烟嘧·莠去津WP120～150 g/亩,对水20～25 kg,于玉米4～5叶期茎叶喷雾除草,对玉米安全,能有效防除玉米田的绿狗尾草、稗、藜、卷茎蓼、酸膜叶蓼和龙葵等杂草,防效为93.2%～95.7%,增产率2.8%～4.9%。
In order to accurately grasp the post-emergence chemical weeding effect of 53% nicotinic acid and atrazine A maize field and the safety of corn, determine the appropriate application period, application methods and dosage, to provide a scientific basis for production and application, carried out in 2009 A 53% Nicotinamide Atrazine WP Corn Field after Mowing Herbicidal Efficacy Test. The results showed that 53% of nicotinic and atrazine A of WP120 ~ 150 g / acre, 20-25 kg of water, spraying and weeding of stems and leaves at 4 ~ 5 leaf stages of corn, safe to maize, Barnyardgrass, Chenopodium album, Polygonum capitatum, Polygonum capitatum, Solanum nigrum and so on, the control effects were 93.2% -95.7% and yield increase 2.8% -4.9%.