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使用草甘磷4L/hm2或环嗪酮4L/hm2可杀灭宿根性杂草,为种苜蓿清理好隙地。草甘磷4L/hm2喷药15d后,环嗪酮4L/hm2喷药40d后,方可播种苜蓿。
The use of glyphosate 4L / hm2 or hexazin 4L / hm2 can kill perennial weeds, for the species of alfalfa clearance gap. Glyphosate 4L / hm2 spraying 15d, hexazopyrone 4L / hm2 spraying 40d, before planting alfalfa.