The indoor soil column simulated experiments was adopted to study the effects of reclaimed water irrigation on soil physicochemical properties.The results showed that soil water diffusivity and saturated hydraulic conductivity was influenced by reclaimed water irrigation frequency

soil water diffusivity and saturated hydraulic conductivity reduced in short period

but with increasing of irrigation frequency

the two parameters would increase.With increasing of irrigation frequency

pH decreased

organic content and total dissolved solid increased

ion concentration in soil solution changed obviously.After irrigation 5 times

the total dissolved solid of 0~10 cm soil layer was 0.107%

and others was below the limit of 0.1%;in the 0~10

10~20

30~40 cm soil layers

ESP was in the range of 5%~10%

in the 20~30 cm soil layer

ESP did not changed.The effect of reclaimed water irrigation on soil secondary salinization and sodicilization was not significant.