40%二氯喹啉酸·莠去津悬浮剂防除高粱田杂草田间药效试验

Field Efficacy Test on 40%Quinclorac·Atrazine SC to Weeds in Sorghum Field

为明确40%二氯喹啉酸·莠去津悬浮剂对高粱的安全性及对一年生禾本科与阔叶杂草的防除效果,于2019年进行了田间药效试验。结果表明:40%二氯喹啉酸·莠去津悬浮剂在高粱苗后3~5叶期,一年生杂草2~4叶期茎叶均匀喷雾,在试验剂量范围内(制剂量2100~2700g·hm^-2)安全性较好;施药后30d,总株防效在90.6%~98.1%,总鲜重防效在94.2%~99.2%,适宜施药制剂量2100~2700g·hm^-2(有效成分用量840~1080g·hm^-2)。

In order to determine the safety of 40%quinclorac·atrazine SC on sorghum and its control effect on annual Gramineae and broad-leaved weeds,field efficacy trials were conducted in 2019.The results showed that:40%quinclorac·atrazine SC suspending agent in the 3-5 leaf stage of sorghum seedlings,and the annual weeds were uniformly sprayed on the leaves and leaves of the leaves at the 3-5 leaf stage,and the safety was good in the trial dose range(2100-2700 g·hm^-2).After 30 d,the total plant control effect was 90.6%to 98.1%,and the total fresh weight control effect was 94.2%to 99.2%.The dosage of active ingredient was 840-1080 g·hm^-2.