In this paper, a case study on the
utilization of water resources and the soil salinization control is carried out in the
Dengkou Irrigated Area by channeling stream water from the Yellow River. The results show that the current irrigation way that the stream water channeling from the Yellow River is combined with groundwater pumping is a rational mode of
utilization of water resources; the ratio between the well water irrigated area and the stream water irrigated area is 1∶5.8 based on the consideration of controlling second salinization in the irrigated area, the ratio between the well water irrigated area and the stream water irrigated area is 1.2∶1 based on the consideration of controlling water resources in the irrigated area; the permeable concrete conduits are ideal for the stream water conveyance, and the permeation loss can be reduced for 7.24%～31.14%. Moreover, the soil salinization can be controlled by combining the engineering with biological measures, the desalinization rate can be up to 42.8% by pumping groundwater to replace drainage; the saline soil can be rapidly desalinized by irrigation in a stream water volume of 1 500 m 3/hm 2 in spring; afforestation of shelter forests along the irrigation ditches can bring about a drawdown of groundwater level for 10～45 cm, and the influencing extent can be up to 35 m. The rational synthetic water salt regulation is a radical way for reducing the waste of water resources and alleviating soil salinization in the
Dengkou Irrigated Area by channeling stream water from the Yellow River.