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Over the course of one summer maize and winter wheat rotation cycle, three irrigation treatments (ground water with a quota of 52.5mm; reclaimed water with a quota of 52.5mm; reclaimed water with a quota of 105mm) were set up, and in each treatment, the soluble K+, Ca2+, Cl- and the electric conductivity (EC) leaching and migration in 0~450cm soil were studied. The results showed that the soil salinity content and EC value were in the following descending order: 380~450cm loam soil layer, 0~120cm loam soil layer, and 120~380cm sandy soil layer. Soluble K+ and Cl- in reclaimed water had a strong leaching and migration ability, and reached the 450cm depth, and the influences of reclaimed water irrigation on soluble K+ and Cl- changes were mainly in 0~450cm soil layer and 0~250cm soil layer, respectively. Soluble Ca2+ and EC reached the 380cm depth, but the influences of reclaimed water irrigation on soluble Ca2+ and EC changes were mainly in 0~120cm soil layer. The 380~450cm soil layer played a role as a block layer for soil salinity leaching, and decreased the pollution risk of soil salinity ion to groundwater. It suggested that irrigation with reclaimed water with a quota of 52.5mm, while irrigation 1 time and 4 times or less during the summer maize and winter wheat growing seasons, respectively.