The factors that affect effective utilization of rainwater resources consist of heavy leakage and asymmetry seasonal distribution of rainfall and peculiar soil moisture character in coincidence.

降水大量渗漏、雨水资源季节性分配不均、特殊的土壤水分物理性质等偶合构成了湘西北岩溶山区雨水资源有效利用的影响因素。

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The soil water movement law of farmland, water utilization situation of main crops, water regime affecting crops growth and utilization of rainfall resources were analyzed.

通过长期定位试验，研究了宁夏半湿润偏旱区农田水分运动规律、主要作物对农田水分的利用、水分对作物生长的影响以及降水资源的利用。

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