Secondary salinization of soils in the Yanqi Basin in Xinjiang is significant and the area of salinization is large. Irrigation in this area relies on surface water. Alkali-draining-canals carried water with high total dissolved solids to the Bositeng Lake, resulting in the degradation of water quality of the lake. Eco-environment of the basin is quite fragile. Formation of the secondary salinization of soils in the Yanqi Basin is analyzed. Control measurements such as pumping groundwater, drainage and inje...