文章基本信息

标题：Does Efficient Irrigation Technology Lead to Reduced Groundwater Extraction?: Empirical Evidence
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作者：Pfeiffer, Lisa ; Lin, C.-Y. Cynthia
期刊名称：Journal of Agribusiness
印刷版ISSN：0738-8950
出版年度：2010
期号：Suppl
出版社：Journal of Agribusiness
摘要：Policies that encourage the use of more efficiency irrigation technology are often viewed as effective, politically feasible methods to reduce the consumptive use of water for agricultural production. Despite their widespread use, these policies have not been subject to empirical evaluation. In this article, we evaluate the effect on groundwater extraction of a widespread conversion from traditional center pivot irrigation systems to higher efficiency dropped-nozzle center pivot systems that has occurred in western Kansas. State and national cost-share programs subsidized the conversion. We find that the programs have not had the intended effect; the shift to more efficient irrigation technology has not decreased the amount of water applied to a given crop, and has actually increased groundwater extraction through changing cropping patterns.
关键词：irrigation efficiency;groundwater management;irrigation technology