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吉林省随着水田面积的扩大,稻田灌溉水的回渗,已引起广大水文地质工作者的高度重视。长春热电厂在供水勘察地下水资源计算得出:稻田回渗量占地下水总补给量40％以上,伊通河上游流域回渗量占总补给量的36％,可见灌溉水回渗量是水资源中极重要的补给量。其回渗系数则是重要的水文地质参数,常以α表示。
With the expansion of paddy field area in Jilin Province, the seepage of irrigation water in paddy fields has drawn great attention from the majority of hydrogeological workers. Changchun Thermal Power Plant calculated groundwater resources in water supply calculations: paddy field re-infiltration accounted for more than 40% of the total recharge of groundwater, the upper reaches of the Yitong River re-seepage volume accounted for 36% of the total recharge, see irrigation water re-infiltration capacity of water resources Very important supply. The permeability coefficient is an important hydrogeological parameter, often expressed as α.