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1.鱼种池混养鱼种池混养沙塘鳢不仅培育了大规模鱼种,更重要的还可获得一定产量的商品沙塘鳢,进一步提高鱼种池的养殖效益。(1)夏花鱼种池混养以鲫鱼、草鱼种为主的鱼种池,主养鱼苗(体长2厘米左右)每亩(1亩=667平方米)放养160万尾左右,混养夏花沙塘鳢600~700尾;以鲢、鳙鱼种为主的鱼种池,主养鱼苗每亩放养150万尾左右,混养夏花沙塘鳢2O0~400尾。一般年终每亩可获大规格草、青、鲢、鳙鱼种250~400千克,获商品规格(30~50克)沙塘鳢10~20千克。
1. Fish ponds Mixed culture of fish ponds Mixed cultivation of sand ponds not only breed large-scale species, but also more important to obtain a certain amount of production of goods sand ponds, and further improve the breeding of fish ponds. (1) Summer pond fish pond polyculture The crucian carp and grass carp-dominated fish ponds are mainly stocked with fish fry (about 2 centimeters in length) and are stocked with about 1.60 million mu (1 mu = 667 m2) Yang Xiaotang sand pond 鳢 600 to 700; to silver carp, bighead carp species-based fish ponds, the main fish fry stocking 1.5 million per mu, polyculture summer sand pond 鳢 2O0 ~ 400 tail. The general year-end per acre can be large grass, blue carp, bighead carp 250 ~ 400 kg, product specifications (30 ~ 50 grams) sand pond 鳢 10 to 20 kg.