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在分析干旱地区水量平衡的基础上 ,根据水文气象条件将全县分为 4个区域 ,分别设计出相应荒山、荒坡及陡坡退耕坡地的人工造林集流工程技术标准。
Based on the analysis of water balance in arid regions, the county is divided into four regions according to the hydrological and meteorological conditions, and the technical standards of artificial afforestation and plumbing engineering for corresponding barren hills, barren slopes and steep slope lands are designed respectively.