80%烟嘧磺隆·莠去津水分散粒剂防除春玉米田杂草药效试验

Efficacy of Nicosulfuron·atrazine 80% WG for Control of Weeds in Spring Maize Field

对80%烟嘧磺·莠去津水分散粒剂在春玉米苗2～5叶期对田间杂草防效进行了试验研究。结果表明：该药剂对春玉米田间禾本科杂草和阔叶杂草均具有较好的防除效果，且对玉米生长安全。在20～50g/667m2剂量下，药后20d对一年生禾本科、阔叶杂草的株防效可达70.63%～92.13%，40d鲜重防效达71.55%～94.67%，增产13.04%～16.74%。

Field experiments of nicosulfuron＂ atrazine 80% WG were carried out for control of weeds in spring maize field at the 2 ~ 5 leaf stage of maize.The results showed that it had a good control effect of gramineous weeds and broadleaf weeds. The control effects of gramineous weeds and broadleaf weeds plant number were 70.63%-92.13% after treated for 20 days;the control effect for weed fresh weight were 71.55%-94.67% on the 40th day,the maize yield increased by 13.04%-16.74%. No negative effects on mazie growth were found.