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将砚瓦川流域划分为中尺度流域分区治理,项目区上游塬面面积大,交通方便,地下水埋藏较浅,饮水条件较好,以“保塬固沟”为主;项目区中游塬面破碎,交通相对落后,人均土地面积大,塬地少,山坡地多,饮水条件差,以“塬沟兼治”为目标;项目区下游塬面窄小,川台地面积大,人均土地面积较多,交通困难,要在粮食自给的条件下,退耕还林还草,有效控制水土流失,促进全流域水土保持生态工程建设。
The Yanwawa River Basin is divided into medium-scale watershed zoning control. The upper plateau area of the project area is large, traffic is convenient, shallow groundwater is buried, and drinking water conditions are better. Surface broken, the traffic is relatively backward, the per capita land area is large, less plateaus, more hillsides, drinking water conditions are poor, with “highland ditch and cure” as the goal; downstream of the project area is narrow plateau, Chuantai area is large, per capita land With more area and less traffic, it is necessary to return farmland to forest and grassland under the conditions of self-sufficiency of grain, effectively control soil and water loss and promote the construction of soil and water conservation ecological engineering in the whole basin.