由于蔬菜具有生长期短、采摘时间长、收获次数多、对药剂敏感和直接为人们食用等特点,所以蔬菜田进行化学除草,一般只采用定向喷雾(即农药直接喷在杂草幼苗上,尽量不喷或少喷在蔬菜幼苗的除草方法)和土壤表层处理等两种 Because vegetables have a short growth period, picking a long time, the number of harvested, sensitive to drugs and directly for people to eat, so the chemical weeding in the field of vegetables, generally only directional spray (ie pesticide spray directly on the weed seedlings, as far as possible Do not spray or spray less in the vegetable seedling weeding method) and soil surface treatment two