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铁岭市位于辽宁省北部,境内共有各类养鱼水面18万余亩,其中水库水面16万余亩。除5座万亩以上大型水库外,中小型水库120余座,养鱼水面6万余亩。由于多年来一直是“人放天养”、“白水养鱼”,1984年以前平均单产徘徊在5.0公斤左右,严重影响着全市渔业生产的发展。为了迅速改变这种局面,从1985年开始,在全市开展了大规模半精养技术推广工作,到1987年末结束,取得了平均亩产31.2公斤,最高达162.5公斤的可喜成果。
Tieling City, located in the northern part of Liaoning Province, a total of more than 180,000 acres of fish water surface, of which more than 160,000 acres of water reservoir. In addition to five large mu of large reservoirs, more than 120 small and medium-sized reservoirs, fish water surface more than 60,000 acres. Since over the years has been “human nature”, “white water fish”, before 1984, the average yield hovers around 5.0 kg, seriously affecting the city’s fisheries production. In order to rapidly change this situation, large-scale promotion of semi-intensive technologies was carried out in the city from 1985 until the end of 1987 with encouraging results of an average of 31.2 kg per mu and 162.5 kg per mu.