Then Taking Shan Dong province as an example, through the analysis of land use comparative advantage, land utilization efficiency, to find out the law of the course land conversion.

本文采用理论分析与定量研究相结合的方法探寻了山东省农地非农化过程中土地利用效率变化趋势，分析其产生原因并给以相关政策建议。

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Fully raising rainfall use efficiency of farm-land is the basis of high efficient utilization to limited water in dry-land farming.

充分提高农田降水利用效率是旱地农业中有限水高效利用的基础。

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The programs were put into action at the beginning of 1999 with a target for a higher efficiency of utilization to lessen the pressure of population upon the limited land resource in Guizhou.

为了提高废弃地的利用效益，缓解贵州人多地少的矛盾，从1999年初开展了本研究。

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