一、深耕消毒。菜农收获蔬菜后,应将菜地深耕40cm左右,借助自然条件,如冬季低温、夏季高温及太阳紫外线等,杀死大量病菌。 二、耕层换土。对一些较固定、品种选择余地又小,而且投资较大、效益高的蔬菜设施栽培,如温室,可采用换去耕层表土,用无病无害表土补充 First, deep plowing disinfection. Vegetable farmers harvest vegetables, the ground should be plowed about 40cm, with natural conditions, such as low temperature in winter, summer heat and sun UV, kill a large number of bacteria. Second, to change soil. For some more fixed, small variety of options and small, but also investment in large, high efficiency of vegetable facilities cultivation, such as greenhouses, can be used to change the topsoil, replaced with disease-free topsoil