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黄河会不会变清,什么时候能变清,关键就在于降雨能否渗入土层,渗入多少,何时实现。研究表明,黄河水流的透明度,与黄土层的入渗率成正相关。增加土壤渗透力的措施,主要有改变土壤质地,减小土壤容重,改良土壤结构和提高地面覆被率,特别是种植豆科牧草,效果更好。各种水土保持措施,旨在增加土壤渗透力,最大限度地减少水土流失,使全部地面径流变为涓涓沟泉,则黄河清澈见底。
The Yellow River will not become clear, when it can be changed, the key lies in the rainfall can penetrate the soil, infiltration of how much, when to achieve. Studies have shown that the transparency of the Yellow River water flow is positively correlated with the infiltration rate of the loess layer. Measures to increase the soil penetration, mainly to change the soil texture, reduce soil bulk density, improve soil structure and improve the ground cover rate, especially the cultivation of leguminous forages, better. A variety of soil and water conservation measures designed to increase soil infiltration, minimize soil erosion, so that all the surface runoff into a trickle ditch, the Yellow River crystal clear.