76%扑草净·乙草胺·噻吩磺隆乳油防除马铃薯田一年生杂草的效果及安全性

Control Efficacy of 76% Prometryn·acetochlor·thifensulfuron EC on Annual Weeds in Potato Fields and Its Safety to the Crop

为明确76%扑草净·乙草胺·噻吩磺隆乳油对马铃薯田一年生杂草的防效及对马铃薯的安全性,采用随机区组试验设计方法进行了田间药效试验。在低剂量1 140 g a.i.·hm^-2下,药后20 d76%扑草净·乙草胺·噻吩磺隆乳油对一年生杂草的株总防效为89.16%;药后40 d对一年生杂草的株总防效为84.59%;药后55 d对一年生杂草鲜质量总防效为86.96%,较空白对照增产为19.51%。结果表明,76%扑草净·乙草胺·噻吩磺隆乳油对马铃薯田一年生杂草有较好的防治效果,对马铃薯安全,无药害发生,并具有一定的增产作用,是马铃薯田的一种较好的复配除草剂。

The objective is to study efficacy of 76%prometryn·acetochlor·thifensulfuron EC on control annual weeds in potato fields and its safety to the crop.The result showed that:In^-20 days after using herbicides,the total control effect of 76%prometryn·acetochlor·thifensulfuron EC on annual weeds at the dose of 1140 g a.i.·hm^-2,was 89.34%;At 40 d after the treatment,the total control effect of 76%prometryn·acetochlor·thifensulfuron EC on annual weeds at the dose of 1311 g a.i.·hm^-2,was 89.34%.At 55 d after treatment,76%prometryn·acetochlor·thifensulfuron EC of the total control effect on the fresh weight of annual weeds was 86.96%.At 1140 g a.i.·hm^-2,the yield increased 19.51%compared with control.The results showed that 76%prometryn·acetochlor·thifensulfuron EC exhibited good control effect on annual weeds,which was safety to potato.The yield of potato significantly increased by application of this herbicide.It was a good compound herbicide in potato field.