我国地膜覆盖在棉花上研究应用较早。1976年以来,山西、辽宁等地在水地和旱地棉田进行了应用试验。试验证明,棉田地膜覆盖(棉田覆膜,下同)对土壤理化性状及棉花生育均有良好的影响。但对盐碱地棉田的覆膜研究却较少,尚未见系统报导。为此,我们在1981和1982年研究的基础上,于1983—1984年又分别在商丘县谢集乡谢集村 Our country mulching covers the research on cotton earlier. Since 1976, Shanxi, Liaoning and other places in the water and dry cotton fields for the application of tests. Experiments show that cotton field mulching (cotton field cover, the same below) on soil physical and chemical properties and cotton have a good effect. However, there is little research on the coverage of saline soils in cotton fields and there is no systematic report yet. To this end, we in 1981 and 1982 on the basis of the study, in 1983-1984, respectively, Shangqiu County, Xie Jixian Xie Jicun