The selection of water-saving irrigation patterns is studied.The objec- tive of the study is to obtain high level crop production and best economic return with smaller amount of irrigating water.Therefore,based on quanlitative analysis, an analytic hierarchy process model is developed to determine the area of various water-saving irrigation patterns,the amount of water-saving,the investment and its net present value,etc.An example for Shanhua village of the Yanshi county,Henan province is presented.The resu...