| Rational analysis of irrigation drainage system of irrigation district based on hydro salinity balance |
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| DOI：10.7606/j.issn.1000-7601.2010.02.30 |
| Key Words: irrigation-drainage system hydro-salinity balance ratio of drainage to irrigation |
| Author Name | Affiliation | | YAN Kan | College of Water Conservancy and Architectural Engineering, Northwest A＆F University, Yangling, Shaanxi 712100, China | | LIU Junmin | College of Water Conservancy and Architectural Engineering, Northwest A＆F University, Yangling, Shaanxi 712100, China | | LI Jiwei | Surveying and Mapping Institute of Xianyang, Xianyang, Shaanxi 712000, China | | LIU Zhanbao | College of Water Conservancy and Architectural Engineering, Northwest A＆F University, Yangling, Shaanxi 712100, China |
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| Abstract: |
| Irrigation is the precondition of agricultural production, and drainage is the guarantee that determines whether the irrigation area can keep a sustainable development. The paper lumps factors that have impact on the healthy development of irrigation and drainage system. Taking Qingtongxia Irrigation District for example, the paper views from the prevention of soil salinization and ratio
nal utilization of water resources, applies the theory of water-salt balance to judge the condition of the salification and desalination and the effect of drainage, and then analyses the rationality of irrigation and drainage system in the irrigation district. The results indicate that the drainage system in Qingtongxia Irrigation District runs well and plays a positive role to the disposal of soil salt. The paper also points out some problems, such as the excessive ratio of drainage to irrigation, drainage capacity surplus and the unreasonable drainage system. |
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