The method was used to synthetically evaluate agricultural resources use efficiency of 81 counties in Gansu province, and the results were classified.
利用该方法对甘肃省81个县域单元的农业资源利用效率进行综合评价，并对综合评价结果进行分级。
Agricultural labor force aging; Land resources use efficiency; Inverted "u" type curve.
农业劳动力老龄化；土地资源利用效率；倒“U”型关系。
The results could give certain reference to reasonable arrangement of local agricultural water, saving water resources and improving water use efficiency.
研究结果对于合理安排当地农业用水、节约水资源、提高水资源利用率具有一定参考价值。
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