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我国是一个水资源严重短缺的国家,农业用水占全部用水总量的一半以上,而且主要以渠系引水的地面灌溉为主。故对渠系水利用率进行估算成为了尤为重要的课题。然而,当前估算渠系水利用率的方法较为单一,估算结果普遍偏小。本文就利用首尾法对渠系水进行估算进行了简要的总结,并以2012年内蒙古引黄灌区为例利用该法求取渠系水利用率,并与常规方法进行对比,分析了两种方法的特点和适用情况。结果表明,采用首尾法对渠系水利用率进行估算更为简单,且更接近真实的渠系水使用情况。
China is a country with a serious shortage of water resources. Agricultural water accounts for more than half of the total amount of water consumed, and is mainly dominated by surface irrigation of canal drainage. Therefore, estimating the canal water utilization rate has become a particularly important issue. However, the current method for estimating canal water use efficiency is relatively simple and the estimation results are generally small. In this paper, the end-to-end method is used to estimate the canal water. A brief summary is made on the estimation of canal water using the end-to-end method. Taking the Yellow River Irrigation Area in Inner Mongolia as an example, this method is used to calculate the canal water use efficiency. Compared with the conventional methods, The characteristics and application of the situation. The results show that using the end-to-end method to estimate canal water use efficiency is simpler and closer to actual canal water use.