A.splendens is a pioneer plantiven saline-alkali soil ameliortion.By coducting research on water-re-quiement law of planted A.splendens tificially,it was found that water-consuming and water-requiement tended to increase by degree during turning gree and heading stage,while it tended to decrease during heading stage and the fruit-beary stage.Water-consuming and water-requiement were the highest during ing stage.Further-more,a preliminary system of irrigation on A.splendens in saline-alkali land was suggested.