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塘沽为天津市的滨海港口区,土壤为盐化湿潮土,加之地层受海水浸渍影响,含盐量高达10‰,致使淡水养鱼生产受到制约,市场供应的淡水鱼主要从外地购进。近年来,在市、区政府的重视下,本区的池塘养鱼生产取得了较快发展,截至1989年,投产池塘增加到8024亩,总产和亩均产分别达到1948.2吨和242.8kg,较1985年分别提高8.5倍和1.32倍。但是在产量逐年稳步增长的同时,经济效益却从1988年开始连
Tanggu is the port area of Tianjin in the marina. The soil is salinized moist soil. In addition, due to the influence of seawater impregnation, the salt content is as high as 10 ‰, resulting in restricted freshwater fish production. Freshwater fish supplied by the market are mainly purchased from the outside world. In recent years, the municipal and district governments have paid close attention to the rapid development of pond fish production in the area. As of 1989, the ponds put into operation increased to 8,024 mu and the total output and mu production reached 1948.2 tons and 242.8 kg respectively, Up 8.5 times and 1.32 times respectively from 1985. However, while the output has been steadily increasing year by year, the economic efficiency has been increasing since 1988