不同除草剂对间作玉米-大豆生长及产量的影响

Effects of Different Herbicides on Growth and Yield of Intercropped Maize and Soybean

在玉米与大豆间作条件下,选用7种除草剂5种不同处理进行土壤喷雾,对杂草防效、作物生长发育及产量影响进行研究。结果表明:48%异恶草酮+96%精异丙甲草胺+80%阔草清、96%精异丙甲草胺、33%二甲戊灵三种处理株防效均在91%以上,不仅能有效防除杂草,对作物安全,而且可显著促进间作玉米增产13%以上,间作大豆增产19%以上,是比较适宜玉米与大豆间作田播后苗前的土壤封闭除草剂处理。

Under a soybean-maize intercropping system,seven kinds of herbicides with five different treatments were used to spray the soil,and the effects on weed control,crop growth and yield were studied.The results showed that the plant control effects of48%clomazone+96%s-metolachlor+80%flumetsulam,96%s-metolachlor and33%pendimethalin were all above91%,which not only prevented weeds effectively and were safe for crops,but also significantly increased the yield of intercropping maize by more than13%,the yield of intercropping soybean by more than20%.It was possible to use them for controlling weeds before seedling in the soybean-maize intercropping system.