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罗非鱼的养殖在我省大面积推广至今已有三年多,推广面积累计10万亩,产鱼11万担,增加收入700多万元。特别是城郊污水塘设置网箱套养罗非鱼,其产量一般亩产2万斤,显示了很大的优势性。长沙市郊区红色渔场网箱养殖罗非鱼,亩产42000斤,株洲市渔场折合亩产47000斤。罗非鱼在养殖生产中具有周期短、生长快、食性广、抗病力强、耐低氧、肉味鲜美等优点。但却有很大的弱点,在池塘里搭养时不易辅捞,到11月份不干塘起水,水温
The cultivation of tilapia has been carried out for a large area in our province for more than three years. The total area for promotion of tilapia is 100,000 mu and the production of fish is 110,000 and the income is increased by over 7 million yuan. In particular, suburban sewage ponds set up nets to raise tilapia, its output per mu 20,000 kg, showing a great advantage. Red cages in the suburbs of Changsha city farmed tilapia, 42,000 kg per mu, Zhuzhou City, fisheries equivalent to 47,000 kg per mu. Tilapia in aquaculture production has a short cycle, fast growth, wide feeding, resistance to disease, resistance to hypoxia, meat and other advantages. But there is a big weakness, not easy to recuperate in the pond when recuperating, to dry pond starting in November, the water temperature