Effect of Water Saving Irrigation on Contributions of Different Water Resources in Winter Wheat

A field experiment about the change of soil water,the contributions of different water resources(irrigation water,soil water and rainfall)and the crop water utilization efficiency(WUE)with different type of irrigation in winter wheat was conducted.The results showed that the soil water consumption was in-creased,and the total water consumption decreased with the decrease of the irrigation times and the amount of irrigation.Comparing with the types of three times,one and twice irrigation in spring,the ratio of the soil water consumption in the total water consumption was increased12.1%,7.4%,and the winter wheat water utilization efficiency(WUE)was increased12.7%and10.1%,respectively.