Application of Head-tail Calculation Method in Calculation of Agricultural Irrigation Water Effective Utilization Coefficient

CHENG Jin,Guli Biekemuhan,ZHOU Yi (Water Conservancy Project Management Office of the 10th Agricultural Production Division,Xinjiang Production and Construction Corps,Beitun Xinjiang 836000,China)

head - tail analysis method;;agricultural irrigation water;;utilization coefficient;;measurement;;applications

【Objective】Through the collection,treatment and spot investigation of the water efficiency of irrigation data of agricultural fields in Beitun irrigation region of the 10th Agricultural Production Division,the datum proof of research results has been started on the basis of the problems and causes existing in the irrigation water utilization coefficient in irrigation district at present.【Method】the head - tail calculation method has been used to calculate irrigation water efficient utilization coefficient.【Result】Through the calculation,the net irrigation amount is 18,558.48 m,the crop irrigation water effective coefficient is 0.552, the relative error is 4.79%.And the calculated and measured value keeps consistent in the allowable range.【Conclusion】The data calculation of research results with water - saving technology in agriculture field in Beitun irrigation region of the 10th Agricultural Production Division has consistency with the head - tail analysis method,and it is consistent with the basic situation of irrigation scale,engineering condition, management level and irrigation water use efficiency in Beitun irrigation region.The results further verified the correctness and reliability of head - tail calculation method,and this method can be the calculation method to synthetically determine the irrigation water utilization coefficient in the future.