黄河进入平原后河床高亢,称为“悬河”,河堤成为黄海平原与黄淮平原的分水岭,渗水成为两侧地下水的源头,更由于历史时期的多次决口泛滥,形成了背河洼地区一千万亩的涝、碱、风沙地。沿黄人民在长期实践中逐步认识背河洼地的特征,取黄水之利,避黄河之害,合理利用黄河水沙资源,引黄淤灌改良沙、碱地,成效显著。为此,在多年调查研究和定位试验的基础上,对黄河背河洼地区的特征及引黄淤灌的经验作一梗概讨论,以供参考。 After the Yellow River into the plains, the riverbed was high-pitched and called “hanging river”. The river embankment became the watershed between the Yellow Sea plain and the Huanghuai plain, and seepage water became the source of groundwater on both sides. Due to the repeated rippling over the historical period, the Beijiao depression Ten thousand acres of floods, alkali, wind and sand. Along the long-term practice, the people along the Yellow River gradually realized the characteristics of the riverside depression, took the benefits of the yellow water and avoided the harm of the Yellow River, and made rational use of the Yellow River water and sediment resources. Therefore, on the basis of years of investigation and research and positioning test, the characteristics of the Beijiao depression in the Yellow River and the experience of dredging from the Yellow River are summed up for reference.