冬季阴天棚内温度低、湿度大,通常会造成病害暴发,不少菜农会选择烟熏剂或者粉剂来预防、治疗蔬菜病害。但是笔者最近在采访中发现,不少菜农在使用烟熏剂或粉剂以后出现了药害。那么,如何使用烟熏剂才能避免药害发生呢? Winter overcast shed temperature is low, high humidity, usually cause disease outbreaks, many farmers will choose smoked or powder to prevent and cure vegetable diseases. However, the author recently discovered in an interview that many vegetable farmers appeared to have harmed their health after using fumigants or powders. So, how to use fumigant to avoid phytotoxicity?