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从宁夏石咀山到绥远安北县西山咀,这一段黄河所经流的地区,当地老百姓称之为后套。在这广阔的地域上,勤劳的人民早已運用自己的智慧和从长期摸索中能积累起来的经验,修筑了许多灌溉渠道,在开垦着其中的土地。但这些渠道都是旧式的,并且存在着不少的缺点,因此不但没有充分扩充灌溉面积,并有泛滥和退水不暢等的现象。使着繁殖工作的开展,也不能不有它一定的限度。我们为了有计划有步骤地来开发这里约一千万畝的肥沃土地,制定整理宁绥大灌溉区的计划,黄河水利委员会第二、三测量队九十七人于一九五○年四月从开封出发,来到了此地,施测后套东北部之乌梁素海——后套十余条干渠退水总枢——水下地形,并補测后套灌溉区与这段黄河河道的地形。
From Ningxia Shizuishan to Suixuan Anbei Xishan Tsui, this section of the Yellow River by the flow of areas, local people call it after the set. In this vast area, hard-working people have long used their wisdom and accumulated experience gained through long-term exploration to construct many irrigation channels and reclaim the land therein. However, these channels are old-fashioned and have many shortcomings. Therefore, not only have they not fully expanded their irrigated areas, they have also been flooded and their waterworks have been slumped. To carry out breeding work, but also can not help but have its own limit. In order to develop about 10 million mu of fertile land here and in a planned and systematic manner, we have formulated a plan to organize large irrigation areas in Ning Sui. The Second and Third Measuring Teams of the Yellow River Conservancy Commission conducted a total of 97 people in April 1950 From Kaifeng, came to here, after the test set of the Wuliangsuhai northeast - after the set of more than a dozen drainage canal total pivot - underwater terrain, and after the test set irrigation area and the Yellow River terrain.