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Journal of Drainage and Irrigation Machinery Engin  2013, Vol. 31 Issue (9): 822-828    DOI: 10.3969/j.issn.1674-8530.2013.09.017
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Evolutionary tendency of agriculture water requirement and its driving force under changing environment
Li Ping, Wei Xiaomei
College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China

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