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首页> 外文会议>2012 International Symposium on Geomatics for Integrated Water Resources Management. >Study on influential factors of crop water productivity in irrigable land of arid area oasis
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Study on influential factors of crop water productivity in irrigable land of arid area oasis

机译：干旱区绿洲灌区作物水分生产率影响因素研究

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The aim of this paper was to research influential factors of crop water productivity in irrigable land of arid area oasis. In middle reach of Heihe River in Linze County of Zhangye City, maize, a major crop in irrigable land in the oasis, was studied and nine influential factors were chosen through grey relation analysis. According to the analysis results, top five factors influencing water productivity of maize during 1995–2009 were as follows: applied quantity of chemical fertilizers>labors input>seeds>mulch amount>pesticide amount, which indicated that controllable factors, instead of uncontrollable ones, dominate in influence of water productivity of maize in the oasis irrigated area. With limited water resource, investment of controllable factors in high-efficient agricultural production should be the major strategy to improve water productivity of maize in irrigable land of arid area oasis.
机译：本文旨在研究干旱区绿洲灌溉土地上作物水分生产率的影响因素。在张ye市临泽县黑河中游地区，研究了绿洲可灌溉土地上的主要农作物玉米，并通过灰色关联分析选择了九个影响因素。根据分析结果，1995-2009年影响玉米水分生产率的前五个因素为：化肥施用量>人工投入>种子>覆盖量>农药用量，表明可控因素而不是不可控因素，绿洲灌溉区玉米水分生产率的影响占主导地位。在水资源有限的情况下，可控因素对高效农业生产的投资应该是提高干旱区绿洲灌溉土地上玉米水生产率的主要策略。

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