天津市宁河县的海水养殖业坚持走科技兴渔的路子,取得较好的经济效益。1988年全县斤虾成本5.70元、1989年为7.76元,连续两年全县每亩虾池投入成本都是全市最低的,所获纯利蝉联全市之冠。1988年全县养虾4050亩,盈利133.5万元,平均亩效益330元;去年在全国各地养虾普遍亏损的情况下,仍盈利51.57万元。他们主要抓住以下三个环节。实行技术承包。强调科技与生产相结合,县局每年派专人负责全县养虾技术指导, Ninghai County, Tianjin’s marine aquaculture industry adhere to the path of science and education, achieved better economic returns. In 1988 the county jin shrimp costs 5.70 yuan, 7.76 yuan in 1989, for two consecutive years the county per acre shrimp pond input costs are the lowest in the city, the net profit won the city’s crown. In 1988, the county shrimp 4050 mus, profit 1.335 million yuan, the average benefit of 330 yuan per mu; last year across the country shrimp generally in the case of loss, still profit 515,700 yuan. They mainly grasp the following three links. Implement technical contract. Emphasize the combination of science and technology and production, the county bureau each year to send someone responsible for technical guidance shrimp farming,