For solving salt-affected land problem in arid area

based on experiments

the movement of soil water from drip irrigation was measured in saline-alkaline soil under different drip irrigation calcium-use concentration.The affection and variation of soil water movement and solute was studied under different drip irrigation calcium-use concentration.The results showed that the use-calcium concentration was the good line function of the maximal horizontal and vertical advance distance

the horizontal and vertical advance distance of soil wetted front was the good power function of infiltration time for different use-calcium concentration.The horizontal and vertical advance distance of soil wetted front were increased

soil salinity and sodium content were increasing.In all treatments

the use-calcium concentration were increased

the depth of the sodium desalinization zone coefficients were increasing

the desalinization effect was distinct.The result of study has certain guidance functions to the utilization of salinity under drip irrigation.