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一、前言 安徽省沿江圩区,位于长江中下游,包括安庆、芜湖、巢湖等地区一部,总面积12,096平方公里,圩田770万亩。本地区气候温和,雨量丰富,土壤肥沃,盛产水稻,素有“鱼米之乡”之称。 建国以来,安徽沿江圩区,通过疏河筑堤,联圩并圩,整修沟港水系、涵闸斗门和机电排灌站,水利条件有了较大的改善,促进了农业生产的发展,粮食亩产由解放初期的300～400斤增长到700～800斤,有的达到1,000斤以上。但是,沿江圩区由于地势低
I. Introduction Anhui Province along the Yangtze River dike, located in the middle and lower reaches of the Yangtze River, including Anqing, Wuhu, Chaohu and other areas, with a total area of 12,096 square kilometers, 770 acres of polders. The mild climate here, abundant rainfall, fertile soil, rich in rice, known as “Yumizhixiang” said. Since the founding of the People’s Republic of China, water conservancy conditions have been greatly improved in the polder areas along the Yangtze River in Anhui Province through the dredging of rivers and embankments, the levees and weirs, the renovation of Ditchigang Water System, the culvert gates, and the electromechanical irrigation and drainage stations. This has contributed to the development of agricultural production and grain yield per mu From the early liberation of 300 to 400 pounds increased to 700 to 800 kg, and some reached more than 1,000 pounds. However, along the polder area due to low topography