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我省西山沿黄河一带有二十八个县.称为晋西黄土高原.是黄河中游严重的水土流失地区之一,每年约有十五亿立米的雨水和二亿九千万吨泥沙输入黄河.平均每平方公里每年流失泥沙六千四百吨,湫水河高达一万三千八百吨。据分析测定:一吨泥沙中含氮素零点三二零五公斤,含磷一点五公斤。含钾二十公斤,从这个地区每年冲走氮、磷、钾六百多万吨.比这个地区每年施用化肥量多几十倍。真是“滔滔河水向西流,流
There are 28 counties along Xishan along the Yellow River, called the Shanxi Loess Plateau, one of the serious soil erosion areas in the middle reaches of the Yellow River, with an annual input of about 1.5 billion cubic meters of rainwater and 290 million tons of sediment input The Yellow River, with an average annual loss of 6,400 tons of silt per square kilometer and up to 13,800 tons of water from the Huang River. According to the analysis and determination, one tonne of silt contained 0.255 kilograms of nitrogen and 1.5 kilograms of phosphorus. Kilo 20 kilograms, washed away from the region more than six million tons of nitrogen, phosphorus and potassium each year than the amount of fertilizer applied in the region a few times more. Really "surging river flows west, flow