地下水同地面水一样,有丰水期和枯水期之分,如多年之内有丰水年和枯水年,一年之中有丰水季和枯水季.就开发利用浅层地下水资源的农田灌溉来说,丰水期地下水丰富,补给量大,除了满足农田供水所需之外,尚有盈余,形成地下水位上升;到了枯水期,补给量 Like groundwater, groundwater is characterized by a period of wet and dry periods, such as years of abundant and dry years in years and abundant and dry seasons in a year. To develop fields that utilize shallow groundwater resources In terms of irrigation, abundant groundwater is abundant during the wet season, and the recharge is large. In addition to meeting the needs of farmland water supply, there is a surplus, resulting in an increase in the groundwater table. In the dry season, the recharge