Relation Between Groundwater Depth and Soil Water and Salt After Water Saving Reform in salinization irrigation district

In order to investigate the inner connection between regional soil water and salt and groundwater buried depth in the irrigation district of salinization after water saving reform.Taking studied area in Linhe of Hetao irrigation district in Inner Mongolia as an example,the results showed that the effect of groundwater had an influence on the soil volumetric moisture content of 0-10cm depth of irrigation area.In addition,the influence on the soil moisture content of 60-100cm depth was particularly outstanding.As the change of groundwater depth(shallow→middle→deep),the soil volumetric moisture content of 0-100cm depth decreased gradually.In the condition of unchanged degree of mineralization of groundwater,electrical conductivity in the root layer soil had a good exponential relationship with groundwater depth.In the three soil layers of 0-20cm,20-40cm,40-60cm,the groundwater depth had the greatest impact on soil surface(0-20cm)salinity.Furthermore,soil salt content in soil surface(0-20cm)had the most sensitive to the change of groundwater mineralization.