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1979年4月,中国水利学会在天津召开了南水北调规划学术讨论会。会上曾组织专门小组讨论防治灌区土壤盐碱化问题,现将讨论情况汇报如下: 大规模地引蓄江水发展灌溉,会不会引起土壤次生盐碱化?这是大家非常担心的问题。同志们回顾了我们的历史经验。大规模地引黄灌溉已有二十多年的历史,不论是河南、山东,还是内蒙、宁夏,都曾发生过大面积的次生盐碱化。河北平原解放初期就在金
In April 1979, China Hydraulics Society held a symposium on the planning of South-to-North Water Diversion Project in Tianjin. At the meeting, a special group was organized to discuss the issue of soil salinization prevention and control in irrigation areas. The discussion is reported as follows: Large-scale introduction of irrigation water will lead to secondary salinization of soil? This is a matter of great concern to all. Comrades reviewed our historical experience. Large-scale irrigation of the Yellow River has been more than 20 years of history, both in Henan, Shandong, Inner Mongolia, Ningxia, have occurred in a large area of secondary salinization. Hebei Liberation in the early gold