(一) 洞庭湖区(指平原区),包括水面,总面积近一万平方公里。区内水、热条件十分良好,地势平坦,土层深厚,自然资源丰富,历来有“鱼米之乡”的誉称。 解放前,洞庭湖区由于湖洲围垦零乱,水系分散,垸小堤矮,洪水宣泄不畅,经常倒堤溃垸,外洪内涝,水灾频繁,生产极不稳定。解放以后,洞 (A) Dongting Lake area (referring to the plain area), including the water surface, the total area of ​​nearly 10,000 square kilometers. The water and heat conditions in the area are very good, with flat terrain, deep soil layers and rich natural resources. It has always been known as the hometown of fish and rice. Before liberation, Dongting Lake area due to lakes reclamation messy, scattered water system, embankment embankment dwarf, poor flood catharsis, often inverted embankment collapse embankment flood floods, frequent flooding, production is extremely unstable. After liberation, hole