Field trials of limited irrigation on winter wheat was carried out in Changwu Ex-periment base on the Rainfed Weibei Highland in three years.The results indicated thatbase soil moisture had a great bearing upon wheat growth in the stage seedling,yield in-crease by drought resistance and water use efficiency.In the dry years with shortage ofbase soil moisture,in case of limited irrigation conducted,the available water contents inone-meter soil layer reaches over 130 mm,and base water content stored in water ...