灌区综合节水改造中单项措施节水量计算方法初探

灌区节水改造往往为多种措施同步进行,灌区综合节水量为各单项措施实施的综合效果,现有节水量计算方法在评价具体节水措施对总节水量的贡献方面尚有不足之处,无法满足实践发展的需要.因此迫切需要研究一套即能体现各单项措施的节水效果,又能表达综合节水量的计算方法.在分析灌区从水源到作物消耗各环节需水及各措施节水原理的基础上,将单项措施节水量计算方法与综合节水量计算方法有机组合,建立一套无重复计算量的、能真实反映各单项措施节水量的节水量计算方法.

Preliminary Study on Calculation Method for Water-saving Quantity of Single Measure in Comprehensive Water-saving Reconstruction of Irrigation District

Various measures are often adopted simultaneously in comprehensive water-saving reconstruction of irrigation district and the water-saving quantity is the comprehensive effect of each measure. The present calculation method for water-saving quantity has some shortage in evaluating the contribution of single water-saving measure to the total water-saving quantity and can not meet the practical need. So it is necessary to develop a set of computation method which can reflect not only the water-saving effect of single measure, but also the comprehensive water-saving quantity. Based on the analysis of water consumption of each link during the process from water source to the crop and the water-saving principles of various measures, the calculation method for water-saving quantity of single is combined with the method for comprehensive quantity and a set of calculation method, which has no overlapping part and can really reflect the water-saving quantity of single measure, is set up in this paper.