4种除草剂对夏玉米田杂草及麦苗的防效与安全性比较

Comparison of the Efficacy and Safety of Four Herbicide Against Weeds and Wheat Seedlings in Summer Corn Field

选用4种莠去津复配剂进行玉米田杂草防除效果及安全性研究,筛选对夏玉米田杂草及自生麦苗的防效及安全性较好的除草剂。结果表明,31.5%噻酮磺隆·异噁唑草酮＋38%莠去津总杂草株防效为88.7%,鲜质量防效为98.48%,防效较好,无明显药害症状,且玉米产量为各药剂处理中最高;22%烟嘧·莠去津和30%苯唑草酮＋助剂＋38%莠去津对自生麦苗株防效均在80%以上,鲜质量防效在95%以上;30%苯唑草酮＋助剂＋38%莠去津对莎草的株防效仅45.58%,莎草为主的夏玉米田块尽量不使用。

In order to screen out the safe and effective herbicide against weed and wheat seedling in summercorn field, field experiments were carried out on 4 atrazine-containing formulations. The results showed that the31.5% thiazone metsulfuron·isoxazol clomazone ＋38% atrazine weed control and safety were better than other treat-ments, and the yield was the highest in all treatments. 22% nicosulfuron carried out 30% topramezone ＋adjuvants ＋38% atrazine on spontaneous wheat plant control effect were above 80%, fresh quality control efficiency in morethan 95%, but 30% topramezone ＋adjuvants ＋38% atrazine on sedge control effect was 45.58%, not recommendedfor use in summer corn field which have a lot of sedge.