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本文对一块６６ｍ×１００ｍ的雨养麦田连续５个麦季的试验资料分析表明，其雨养麦田产量为３４５０－５６２５ｋｇ／ｈｍ２．根据本区雨养麦田历年水分条件的分布特征，可推定这个产量幅度的出现概率为７４８％．对５个试验麦季的耗水过程进行了分析，得出一条麦田理想的土壤湿度动态曲线，据此提出一个节水灌溉模型．它首先根据麦播期的土壤有效储水量（Ｓｅ）和降雨量（Ｒ）预报预计灌溉定额，并进行预分配，然后在应用过程中对灌溉程序进行修正，使其湿度与理想的土壤湿度偏差不超过±５０ｍｍ．这个模型可比现行的传统灌溉模式节省灌溉用水１８％．
In this paper, a 66m × 100m rain-fed wheat field for five consecutive wheat season trial data analysis showed that rain-fed wheat field output of 3450-5625kg / hm2. According to the distribution characteristics of the rainy season wheat fields in the past years, the probability of occurrence of this yield can be estimated to be 74.8%. The water consumption of five experimental wheat seasons was analyzed, and an ideal soil moisture dynamic curve of wheat field was obtained. Based on this, a water-saving irrigation model was proposed. It first predicts the irrigation quota according to the soil available water storage (Se) and rainfall (R) during the sowing date and pre-distributes the irrigation schedule, and then corrects the irrigation program during application so that the humidity deviates from the ideal soil moisture Not more than ± 50mm. This model saves 18% of irrigation water compared with the current traditional irrigation modes.