對於一次性收獲的蔬菜，如芹菜、大白菜、油菜等，可根據農藥的安全間隔期，在收獲前相隔一定的時間停止用藥，可使產品達到無公害的要求。但對於多次收獲的茄果、gualeishucai，zehennanzuodaozaishouhuoqianguidingchuyidingdeshijiantingzhiyongyao
，tebieshizaicaishouqinei，fashengbingchonghaideguoshihenyoukenengweichunongyaocanliuqijiuhuibeicaishoushangshi，zhishipinzhixiajiang。zaixihongshihehuangguazaipeizhongcaiyongguoshitaodaifangfa，keyouxiaojiejueshangshuwenti。