人们都认为黄河问题的根源是泥沙太多,致使河床不断淤高;将水土保持作为治黄的根本,也就立足于此。然而几十万平方公里缺水地区的水土保持,不是轻而易举,更不是短期能奏效的。面上生效后,还要再过相当长的年月方能对下游特别是山东段河道起减淤作用。历史上特别是三十余年来大搞水土保持的经验充分证明了这个认识。 People think that the root cause of the Yellow River problem is too much sediment, resulting in siltation of the riverbed; the soil and water conservation as a fundamental cure, also based on this. However, the water and soil conservation in the water-scarce areas of hundreds of thousands of square kilometers is not easy or even more effective in the short term. After the face of the entry into force, but also a longer period of time before being able to downstream of the river, especially from the role of the Department of deposition in Shandong. This understanding has been fully proved by the experience gained in popularizing water and soil conservation over the past 30 years in particular.