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湖泊养鱼单产不高,是发展淡水养殖业的一大障碍。湖北省1983年湖泊养鱼160万亩,平均单产17斤。水面位居“老五”的刁汊湖,1973—1983年十年的平均单产仅12斤。怎样提高湖泊养鱼的产量?1984年湖北省水产局工程师林家炯,带着这个问题在刁汊湖承包湖面(中围)3300亩,进行各项技术试验,终于取得了惊人的突破——单产106斤,比前十年的平均产量提高八倍。湖北省科委和省科协,组织有关单位对这项成果进行了鉴定,总结出四点经验可供全国淡水养鱼借鉴。一、湖中套渠和围网养殖。水深一米以内的湖泊,可利用冬季时间,排干或排浅湖水,人工挖成十字渠;水深超过一米的湖泊,用木船挖成暗渠或者围网养殖。这样,不仅可以大大改善湖泊水域条
Lake fish yields are not high, is a major obstacle to the development of freshwater aquaculture. Hubei Province in 1983 160 million mu of lake fish, the average yield of 17 pounds. Diaoyu Lake, where the water ranks among the “youngest five”, averaged only 12 pounds in 1973-10. How to improve the production of fish in lakes? In 1984, Hubei Province Fisheries Bureau engineer Lin Jiajiong, with this problem contracted Lake Diaoyu Lake (in the Wai) 3300 acres, various technical tests, and finally achieved a remarkable breakthrough - yield 106 pounds, eight times more than the average output of the previous ten years. Science and Technology Commission of Hubei Province and the Provincial Association for Science and Technology, the organization of the relevant units of the results of the appraisal, concluded that four-point experience for the national freshwater fish for reference. First, the lake ditches and seine breeding. Lakes within one meter of water depth can make use of winter time, draining or draining lakes and artificially digging into cross channels. Lakes with water depths of more than one meter are dug into wooden culverts or seine for breeding. This will not only greatly improve lakes and waters