An important goal of soil management in the Songnen Plain is improvement of soda saline-alkali soil.Summing up the previous research results on soil improvement,this article summarized the application types,action mechanisms,improvement effects,existing problems of improvers in soil improvement,and looked forward to the application prospects of improvers,in order to provide reference for future in-depth research.The results showed that improvers could be divided into inorganic improvers,organic improvers,and microbial agents.The use of combined improvers was better than that of single improver.The application of improvers improved soil physical and chemical properties,structure,nutrient content,and micro ecological environment,and promote plant growth.The research and development of new organic improvers were the focus of future research.
万方数据
维普
