氰津莠悬浮剂苗后防除玉米田杂草应用技术研究

Techniques of Applying Qingjinxiu Suspension Concentrate in Early Postemergence against Weeds in Corn Field

对不同剂量质量分数为30%氰津莠防除玉米田杂草的效果进行了田间试验。结果表明:质量分数为30%氰津莠悬浮剂在玉米2～4叶期施用,剂量为0 99～2 70kg hm2,对单子叶杂草的防效为43 0%～98 8%,对双子叶杂草的防效为83 2%～100%,对杂草鲜重的抑制效果为60 0%～98 8%,而且杀草谱广,防效持久,对玉米生长及产量无不良影响。

Field trials of different doses of 30% Qingjinxiu suspension concentrate against corn field weeds were conducted. The results showed that excellent weed control performance was achieved when 30% Qingjinxiu suspension concentrate was applied at the 2～4 leaf stage of corn and within the application dosage of 0.99～2.70 kg/hm^2. The average control effect against barnyardgrass was 43.0%～98.8%, and 83.2%～100% against all kinds of broadleaf weeds. Its inhibition effect to weed fresh weight was 60.0%～98.8%.30% Qingjinxiu SC is a herbicide of a broad spectrum and a persistent effect. No negative effect on corn growth and corn yield was found.