近几年,蔬菜大棚栽培发展势头迅速,已成为农民经济收入的主要来源之一。但随着大棚栽培时间的增长,大棚内土壤盐分不断积累,盐害逐年加重,既降低蔬菜产量,又降低蔬菜品质,严重影响大棚效益。据对湖北十堰市郊的万亩大棚蔬菜调查得知,凡种植3年以上土壤,均程度不同地产生盐害,有 In recent years, the rapid development of greenhouse cultivation has become one of the major sources of income of peasants. However, with the growth of greenhouses, soil salt accumulation in the greenhouse, salt damage increased year by year, not only reduce the yield of vegetables, but also reduce the quality of vegetables, seriously affecting the benefits of greenhouses. According to a survey of 10,000 mu of greenhouse vegetables in the outskirts of Shiyan, Hubei Province, it is known that where soil is planted for more than three years, salt damage occurs in varying degrees