池塘主养团头鲂高产技术研究

进行了主养１龄团头舫鱼种和２龄团头鲂养成的高产试验，研究了团头舫和配养品种的放养密度、饵料配方、水质管理、投饵方法等技术。结果：１年育成大规格鱼种，２年养成商品鱼，团头鲂养殖周期由３年缩短为２年，平均每亩净产团头鲂鱼种３９７．５０ｋｇ，平均尾重３３．９７ｇ；平均每亩净产团头舫成鱼４６１．０２ｋｇ，平均尾重３４７．３ｇ。专家鉴定认为：本研究高产技术达国内先进水平。

On Technique for High Yield of Blunt Snout Bream Farmed as Main Species in Ponds

An experiment was made on high yield of rearing the fry of the blunt snout bream up to the yearling fingerlings and farming them up to the commercial fish within two years both as main specles in ponds. In the experiment some items such as releasing density of the blunt snout bream and the secondary species for mixed cultivation, feed precription, water quality control and the feeding method were studied. The result showed that the blunt snout bream fry were reared up to the big-sired fingerlings within one year and the fingerlings were farmed up to the commercial fish within two years;the cultivation circle of the blunt snout bream shortened from 3 to 2 years. The average Per mu net yield of the blunt snout bream fingerlings was 397. 50kg with the average individual weight of 33. 979; the average Per mu net adult blunt snout bream was 461. 02kg with the average individual weight of 347. 309. The achievement appraised by experts has met the advanced level at home.