近年来，苏北沿海各地加大了农业结构调整力度，保护地蔬菜面积发展十分迅速，但由于大棚生产的特殊环境条件，造成不少大棚内土壤产生次生盐渍化，严重影响蔬菜的生产和品质效益的提高。现就发生原因及防治办法分析如下： 一、土壤次生盐渍化的形成 苏北沿海土壤由江淮、黄淮 In recent years, the agricultural structure adjustment has been intensified along the coastal areas in northern Jiangsu Province. The vegetable area in protected areas has developed rapidly. However, due to the special environmental conditions in greenhouse production, many secondary soil salinization occurs in the greenhouse and the production of vegetables is seriously affected And improve the quality and efficiency. Now the causes and prevention measures are as follows: First, the formation of soil secondary salinization Jiangsu coastal soil from Jianghuai, Huanghuai