Model analysis about comprehensive control project of saline-alkali field

Soil salinization or alkalization is a comprehensive problem involving agriculture, land and water resources, as well as a typical ecological environment problem. Saline and alkaline land is important land resources, which is valuable in potential for the development of agricultural industrialization. There are large areas of saline and alkaline land with surveys in Dingbian county of Shaanxi province. Combined three alkali and salt treating technology of water storage, salt reducing and sand sieving, the farmland, salt reducing project, irrigation project, and road and shelterbelts project were comprehensively designed. The most significant method was that by breaking though the traditional models using the principle of movement of water and its soil around and the mechanism of salt cycling drainage to build up the new management model of “replacing draining by storing, water and soil conservation and eco-harmony”. The results indicated that 746.32 hm2 land in all had been developed, in which 667.42 hm2 was plough. In this way, we find new ways to manage soil salinization or alkalization, increased the incomes and improved the eco-environment.

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