Application of the Head-Tail Method to Determine Irrigation Coefficient in Hongguang Irrigation District

Irrigation coefficient is not only a critical criterion of the efficiency of agricultural water use, but also an important basis for the evaluation of regional water-saving scheme. According to the Head-tail method (measured net irrigation water use and gross irrigation water use), the irrigation coefficient of Hongguang irrigation district was determined in this paper. The results showed that this method well fitted the real situation of Hongguang irrigation district, and had several advantages including conceptually clear, convenient to use by local staffs. Practical application of this method in irrigation district provides good reference for the future routine evaluation of irrigation efficiency in irrigation.