Abstract:

In order to further study the positive effect of planting rice in different years to saline-alkali soil and the biochemical characteristic change of the improving soil. With the contradictions between population growth and declining availability of land, improving use of saline-alkali soil becomes a hot issue in the sustainable use of world resources. In this study, the author used unimproved and improved saline-alkali soil through different years with rice method as material, through analysis of pH value and total soluble salts and microorganisms of different profiles, defined the trends in soil quality through different years of improvement. The results showed that pH value and total soluble salts decreased gradually, but microorganisms were increasing with years. The soil quality improved significantly with rice method. After improved years, plant growth could benefit from soil properties, which is important for the use of sodic-soil and yield elevation.