洞庭湖堤防加固工程与血吸虫病的预防

水利工程结合灭螺是湖南血防工作的重要组成部分，洞庭湖是承纳湘，资、沅、澧四水和调蓄长江洪水的大型湖泊，洞庭硝地区是我国重要的粮、棉、水产基地。建国以来，湖区人民进行了大规模的水利建设，使湖区的防洪蓄洪能力有所提高。在实施洞庭湖大堤加高加固时，根据钉螺的生长特性和血吸虫病传播特点，因地制宜，改造地形，改变钉螺生长期的水情条件，形成不利于血吸虫病传播的外部条件，是达到消灭钉螺，控制血吸虫病的根本途径。

Effeet of Dongting Lake dike strengthening works on controlling and eliminating schistosomiasis

Combination of water conservancy project construction with extendnating oncomelania is an important component of schistosondasis prevention work in Hunan province. Dongting tale is a large scale lake, receiving water of fourrivers, i. e. Xiang river, Zi river, Yuan river and Li river, and regulating the floods of Yangtze. The lake area is an extant production base Of China for grain, cotton and aquatic products. Since the founding of the People's Republic of China,the People in the lake area have conducted large scale water conservancy constrUction and improved the flood control and storage capacity of the lake. In foe meantime of hightening and strengthening the lake dyke, in the light of chalacterishcs of oncomelania reproduction and schistosodriasis dissendnation, transfondng the topography accolding to local condition andchanging water regime in the reproduction period of oncomelania, foeing unfavourable external condihon for schistosondasisdissemination, it is the principal measure to extendnate oncomelania and control the schistosotheasis. It has imper'tant realistic significance in reducing foe economic and social input for schistosomiasis prevention, safegualding the people and livestock in infected area, and promoting sehistosotheasis prevention work.