蔬菜重茬栽培,尤其连年重茬,会带来很多弊端: (1)容易造成相同病虫害的猖獗,尤其土传病害,如黄瓜、西瓜重茬时发生枯萎病,并随重茬次数的增加而增加。土壤传播的蔬菜病害主要有:茄子黄萎病、褐纹病、绵疫病,番茄早疫病、晚疫病、白绢病、青枯病、病毒病,辣椒炭瘟病,瓜类枯萎病、炭疽病、疫病,豆类绣病,菠菜、葱类的霜霉病等。 Continuous cropping of vegetables, especially in successive years of cropping, will bring many drawbacks: (1) easily lead to the same pests and diseases rampant, especially soil-borne diseases such as cucumber, watermelon crop stubble, and increase with the increase of the number of stubble. Soil diseases of vegetable propagation mainly include: Verticillium wilt, brown leaf disease, cotton disease, early blight of tomato, late blight, sclerotium, bacterial wilt, viral disease, peppery charcoal, melon blight, anthracnose, Blight, legumes, spinach, spring onychomycosis and so on.