Study on the Change Characteristics of Soil Salinity in Heavy Salinized Area of Xinjiang

In view of the problems of soil salinity, barren and other obstacles in the process of reclamation and utilization of heavy salinized land in Xinjiang, the heavy salinization area was selected as the research object, and the spatial variability of different salinity ions and its correlation were studied by using geostatistics and ground-penetrating radar technology. The results showed that the largest anion content in the soil of each layer of the study area was Cl^-, followed by CO₃^2-, the largest cationic content is Na⁺, followed by Ca²⁺, Cl^- and Na⁺ The variation law is basically the same, and the salt ion content of the whole section has - the variability of intensity; the soil salinity in the study area showed "micro S" in the vertical direction. The characteristics of the table polymerization is not obvious, mainly related to artificial tillage; through spatial interpolation analysis, it is found that the salinity of soil in the study area has obvious characteristics of banded spatial distribution, the salinity of soil gradually increases from the southwest to the northwest, and the type of salinization is mainly chloride type. Detected by radar, in the study area deep in the 30cm, there is a dense salt plate layer in the soil, and the correlation analysis shows that the salt plate material is mainly CaCO₃. This study provides a theoretical basis and reference for the zoning, improvement, management and rational utilization of salt in the heavy salinized region of Xinjiang.