Translated Titles

Scale Effect of Water Saving in rice-based Irrigation System


董斌(Bin Dong);崔远来(Yuan-Lai Cui);李远华(Yuan-Hua Li)

Key Words

水稻 ; 节水灌溉 ; 尺度效应 ; 水量平衡 ; 水分生产率 ; paddy rice ; water saving irrigation ; scale effect ; water balance ; water productivity



Volume or Term/Year and Month of Publication

16卷6期(2005 / 11 / 01)

Page #

833 - 839

Content Language


Chinese Abstract


English Abstract

This paper is to explore the issues of seale effect of water saving, caused by the returning flows and their reuse in the water resource system. Taking the rice-based irrigation system, Zhanghe Irrigation System (ZIS), as an example, we analyzed the components of water balance and their roles at different scales, and point out that the situation would be become more complicated and the scale effect could be obvious with the increas of scale. Based on the experimental and long-term historical data in ZIS, we consider water use at different scales-the fields, the middle scale, a main canal-commanded area scale and the irrigation system. The results demonstrate the higher water productivity under water saving irrigation practice at the field scale and in the ZIS. And there are real water saving and the considerable increase in water productivity over time.

Topic Category 工程學 > 水利工程
社會科學 > 經濟學