论文部分内容阅读
对河道船型网箱养殖草鱼过程中的生态环境、鱼种放养、饲料供给、病害防治和管理措施等生产技术进行了探讨。放养规格以0.25~0.40 kg/尾的隔年大规格鱼种为宜;放养密度以120~130尾/m2为好。2004年富江河船型网箱15只,面积819 m2,养殖产量108.5 t,平均产量132.5 kg/m2,总收入108.5万元,平均产出1 324.8元/m2,扣除养殖成本81.5万元,总利润27万元,平均利润329.8元/m2,投入产出比在1.96以上。
The ecological environment, species stocking, feed supply, disease prevention and control and management measures during the culture process of grass carp in the river vessel cage are discussed. Stocking specifications to 0.25 ~ 0.40 kg / tail of large species of fish is appropriate; stocking density of 120 to 130 / m2 is better. In 2004, there were 15 cages of Fujiang River with an area of 819 m2 and a breeding output of 108.5 t with an average output of 132.5 kg / m2. The total revenue was 1.085 million yuan, with an average output of 1 324.8 yuan / m2, net of breeding costs of 815,000 yuan, total profit 270000 yuan, the average profit of 329.8 yuan / m2, input-output ratio above 1.96.