Study on the Harm of Saline Alkali Land and Its Improvement Technology in China

Abstract As a common soil type, saline alkali land is widely distributed in China. The soil properties of saline alkali land are relatively special, and the utilization rate is relatively low. In the current situation of scarce soil resources, the improvement of saline alkali land has attracted much attention, and it is particularly urgent to speed up the improvement and utilization of saline alkali land. The improvement methods of saline alkali land are different. This paper analyzes the causes of the formation of saline alkali land, discusses the current situation and harm of saline alkali land, comprehensively expounds the physical improvement methods, chemical improvement methods, biological improvement methods and combination methods of saline alkali land treatment, and further puts forward the development trend of saline alkali land treatment technology in China.