如今,菜田除草剂的应用日渐广泛,特别是老韭菜地,过去常因莎草、灰菜、马齿苋、马唐等为害,造成绝收毁种。胡萝卜、芫荽、芹菜、小葱,播后初出苗,因杂草混生,不易清除,费工费时,严重影响了其他农田管理,近年 Nowadays, the application of herbicide in vegetable fields is becoming more and more widespread, especially in the old Chinese chives. In the past, the herbaceous plants such as sedge, gray vegetables, purslane and crabgrass damaged the seeds. Carrot, coriander, celery, shallot, early after sowing seedlings, due to weed mixed, not easy to remove, time-consuming work, seriously affecting other farmland management, in recent years