本文着重报道氟乐灵施于土壤后,在土壤中的消失动态,测出其半衰期为22～27天。并以氟乐灵对蔬菜的50%抑制率,表示蔬菜对氟乐灵的敏感程度,指出育苗韭菜最敏感,菠菜第二,小葱第三。同时以5%抑制率所对应的土壤氟乐灵含量为该作物的播种安全剂量。 This article focuses on trifluralin applied to the soil, disappeared in the soil dynamics, measured half-life of 22 to 27 days. And the trifluralin on vegetables 50% inhibition rate, said the sensitivity of vegetables to trifluralin, nursery leeks that the most sensitive, second spinach, onion third. At the same time, the soil trifluralin content corresponding to the 5% inhibition rate is the safe planting dose of the crop.