4种除草剂对夏玉米田杂草及麦苗的防效与安全性比较

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。

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

In order to screen out the safe and effective herbicide against weed and wheat seedling in summer corn field, field experiments were carried out on 4 atrazine-containing formulations. The results showed that the 31.5% thiazone metsulfuron·isoxazol clomazone +38% atrazine weed control and safety were better than other treatments, 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 more than 95%, but 30% topramezone +adjuvants +38% atrazine on sedge control effect was 45.58%, not recommended for use in summer corn field which have a lot of sedge.