20%砜嘧磺隆OF对马铃薯田一年生杂草的防除效果

Effect of 20% Rimsulfuron OF on Controlling Annual Weeds in Potato Field

研究了20%砜嘧磺隆OF对马铃薯田杂草牛筋草[Eleusine indica(L).Gaertn.]、马齿苋(Portulaca oleracea L.)、反枝苋(Amaranthus retroflexus L.)、醴肠(Eclipta prostrata L.)的防除效果。结果表明,20%砜嘧磺隆OF对马铃薯田的阔叶杂草马齿苋、反枝苋和醴肠有较好的防效。有效成分用量15~36(a.i.)g/hm2,对马齿苋的防效为76.16%~93.47%,对醴肠的防效为77.58%~96.10%,对反枝苋的防效为81.67%~100%,施用20%砜嘧磺隆OF明显优于人工除草效果,对马铃薯增产效应明显。

Trials were conducted to evaluate the effect of 20% rimsulfuron OF on controlling weeds such as Eleusine indica（L）.Gaertn.,Portulaca oleracea L.,Amaranthus retroflexus L.,and Eclipta prostrata L.in potato field.The results showed that 20% rimsulfuron OF at dose of 15~36（a.i.）g/hm^2 had good control effect against broadleaved weeds in potato field.The effect against P.oleracea was 76.16%~93.47%,against E.prostrata was 77.58%~96.10%,against A.retroflexus was 81.67%~100%.The application of 20% rimsulfuron OF in potato field was obviously effective than manual weeding and significantly improved the yield of potato.