前言泥沙问题是治黄的症结所在。研究黄河泥沙的产生、输送和沿程冲淤变化的过程,弄清不同地区的产沙量和颗粒组成,是研究解决黄河泥沙问题的一个基本前提。前几年进行治黄规划工作的过程中,对这方面作了一些探索,虽然所得到的结果是初步的,但还可以得出一些值得注意的新的概念。因此整理出来供讨论和进一步研究的参考。 Foreword Sediment problem is the crux of the cure. It is a basic premise to study the sediment production and transportation in the Yellow River and the process of erosion and sedimentation along the route, and clarify the sediment yield and particle composition in different areas. In the process of planning for the Yellow River a few years ago, some exploration has been made in this respect. Although the results obtained are preliminary, some notable new concepts can be drawn. So sorted out for discussion and further study of the reference.