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沙苑位于关中东部地区,是非干旱气候条件下形成的特殊风积沙地。过去因植被的破坏、风沙危害极其严重。该地以细沙为主,孔隙较大,故易漏水跑肥,土壤贫瘠。其南临的渭河大部分流经黄土覆盖地区,河流汛期悬移质泥沙含量很高。利用小于0.01毫米浑水泥沙进行淤灌,既可防风固沙,又能改变沙土结构,促使农业生产获得大幅度的提高。在我国黄河中下游许多地方,都有利用浑水进行淤灌治沙改土,压碱造田,改造垆土的条件。随着四个现代化农业生产的发展,淤灌将会被广泛地应用。
Sand Court is located in the eastern Guanzhong area, is a non-arid climatic conditions formed by special aeolian sand. Due to the destruction of vegetation in the past, sandstorms have been extremely devastating. The fine sand-based, larger pores, it is easy to run leaking fertilizer, poor soil. Most of the Weihe River to its south flows through the loess area, with a high suspended sediment content in flood season. The use of less than 0.01 mm muddy water silt irrigation, both wind and sand, but also change the sand structure, prompting a substantial increase in agricultural production. In many parts of the middle and lower reaches of the Yellow River in our country, muddy water has been used for sand control and soil remediation, forcing soil and rebuilding soil conditions. With the development of four modern agricultural production, siltation will be widely used.