近年来，塑料大棚蔬菜生产在我国发展迅速，对改善城乡人民生活发挥了巨大作用。但由于塑料棚蔬菜生产的特殊性，加之连年栽培，不仅出现盐害，而且土壤带苗情况逐年加重。这一问题在很多菜区的大棚中已严重表现出来，影响了产量的提高和菜农的收入。笔者根据近几年来本地区塑 In recent years, the production of plastic greenhouse vegetable has been developing rapidly in our country and played a great role in improving the life of people in urban and rural areas. However, due to the particularity of plastic shed vegetable production, coupled with year-round cultivation, not only salt damage occurs, but the situation of soil seedling increases year by year. This problem has been seriously manifested in the greenhouses in many vegetable zones and has affected the increase of output and the incomes of vegetable farmers. According to the author in recent years, the region plastic