首尾法简单估算灌区渠系水利用率研究——以内蒙古黄河南岸灌区为例

SIMPLE ESTIMATES OF IRRIGATION CANAL WATER UTILIZATION COEFFICIENT OF HEAD AND TAIL—— IN CASE OF SOUTH BANK OF THE YELLOW RIVER IRRIGATION AREA IN INNER MONGOLIA

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。

Ours is a country with severe water shortages,the total agricultural water use more than half of the total water use,but mainly in the main irrigation canal water on the ground. So the canal water utilization coefficient is estimated to become a particularly important issue. However,the current canal water utilization factor calculation method is more simple,and the results generally small,and the use of both method to estimate canal water are rarely applied research literature. In this paper,the use of both canal water method to estimate a brief summary,and in 2012 for example the use of irrigated areas in Inner Mongolia to strike the Act canal water utilization coefficient,and even multiplication with currently used for comparison to determine two difference method and application. The results show that the method using both canal water utilization coefficient calculation easier,and more close to the real canal water usage.