Research on Saline-alkali Land Improvement Technology and Safety

Saline-alkali land is a special soil type, whose high salinity and alkali content pose a serious threat to crop growth and is one of the major challenges facing the sustainable development of global agriculture. The origin and characteristics of saline-alkali land and its influence on agricultural production are summarized in this paper. The application and safety evaluation of engineering improvement, chemical improvement, agricultural measures and smart agriculture in saline-alkali land improvement were analyzed. The development trend of saline-alkali land improvement technology is prospected, and corresponding conclusions and suggestions are put forward. The research shows that saline-alkali land can be gradually transformed into high-yield and stable farmland through multidisciplinary integration and local adaptation technology, but it still needs to strengthen research in long-term monitoring, cost optimization and ecological balance.