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湖北省黄冈县从多年的大水面渔业实践中,深刻地体会到投放数量足,规格大,品种全、质量好的鱼种是成鱼稳产高产的关键性措施。其中尤以“规格”最为突出。全县从1963年提出投放4寸以上大鱼种;到1973年进一步提倡投放一两左右的大鱼种以来,鱼种规格显著上升。国营场、库每年大约生产500万尾春片鱼种,其中4寸以上的达60%以上。大规格鱼种增产效果是显著的。如白潭湖渔场,现有湖泊水面6,000亩,1961年亩放鱼种达261尾,由于规格小,当年产量
Huanggang County, Hubei Province, from many years of large surface water fisheries practice, deeply aware of the number of delivery enough, large specifications, all varieties, good quality fish species is the key to adult fish yield and stability of the key measures. Especially in “specification ” the most prominent. Since 1963, the county put forward putting big 4-inch fish species above 1963. By the year of 1973, a further two or so large-scale fish species have been promoted, the fish species specification has risen significantly. State farms, libraries produce about 5 million spring pieces of spring fish each year, of which more than 4 inches of more than 60%. Large-scale species yield increase effect is significant. For example, the Bai Lake Lake fishery has 6,000 mu of lake water surface, and 261 mu of fish were released in 1961. Due to the small size and current output