| The content,chemical components and spatial distribution characteristics of soil salt in Awati irrigation areas of Xinjiang were investigated by using statistical characteristic value and correspondence analysis.The results showed that about 50% of land is middle-strong salinized or salt soil,and the primary salt type is chlorinate-sulfate.In the irrigated areas,the soil salinity changes seasonally and decreases as a whole along with the process of irrigation and drainage.The reasons for soil salinization include natural factors and human activities.Water-saving irrigation,rational groundwater exploitation and improved irrigation and drainage systems are effective measures to control soil salinization. |