中文摘要：

目前，对农业灌溉节水潜力尚未形成一个统一、公认的概念，相应的评价和计算体系也没有很好地建立起来。对农业灌溉节水潜力方面的研究成果进行了全面的回顾总结，提出了存在的问题和以后研究的重点。指出不同尺度回归水重复利用的量化是合理计算真实节水潜力的关键。最后，对回归水重复利用研究计算方法进行了归纳总结，提出了考虑回归水重复利用率的灌溉节水潜力评价思路。

英文摘要：

At present, there is no widely accepted definition of water saving potential of agricultural irrigation, so are its compute mode and evaluation system. All the research achievement on water saving potential is summarized and the existing problems and the future research emphases are put forward in this paper. Moreover, it is pointed out that the quantitative analysis of reuse of return flows at different scales is the key problem for the reasonable estimation of real water saving potential. The research achievement on reuse of return flows is summarized and a method for the water saving potential evaluation considering reuse of return flows is proposed in the end.