苜蓿地杂草不仅同苜蓿争光、争水、争肥而且降低苜蓿的产量和品质。除治方法有: 1 播前深耕。秋播前深耕25～30厘米,使杂草深埋地下,对多年生芦苇、苣荬菜、刺儿菜、田旋花等切断根茎失去发芽力。 2 土壤处理。土壤处理剂如氟乐灵、拉索等能有效地防除稗草、苋、黎等杂草。氟乐灵使用时注意控制好浓度,48％ Alfalfa weeds glory not only with alfalfa, water, fight fat and reduce the yield and quality of alfalfa. In addition to rule methods are: 1 deep plowing before sowing. Depth sowing before planting 25-30 cm, so that weeds buried deep underground reeds on the perennial, Endangered vegetables, spines vegetables, spinach and other rhizome cut off the loss of germination. 2 soil treatment. Soil treatment agents such as trifluralin, cable, etc. can effectively control barnyardgrass, amaranth, Li and other weeds. Trifluralin use to pay attention to control the concentration, 48%