【摘要】 为解决甘肃沿黄地区大口黑鲈生长周期短、当年达不到上市规格的生产实际问题，采用设施化车间开展大口黑鲈反季节大规格苗种培育和延长生长周期接力养殖模式的构建。试验历时7个月，30 000尾大口黑鲈苗种平均体质量从0.72 g增长至372.96 g,苗种培育期放养密度531尾/m~3,成鱼养殖期放养密度35 383尾/hm~2,产量11 151 kg/hm~2,累计投入21.03万元，产出8 390 kg成鱼，总销售额达30.28万元，净利润9.25万元，单位产值12.29万元/hm~2。试验成功延长了大口黑鲈在甘肃沿黄地区的生长周期，实现了当年培育苗种、当年达到上市规格的目标。更多还原

【Abstract】 To solve the practical production problem of short growth cycle and failure to reach market specifications in the current year for the largemouth bass Micropterus salmoides in the Yellow River region of Gansu Province, off-season large-size fry rearing and relay breeding model was adopted to extend the growth cycle of the largemouth bass with facility workshop.The experiment spanned 7 months and the average body mass of 30 000 largemouth bass fry increased from 0.72 g to 372.96 g.The stocking density during the fry cultivation period was 531 ind./m~3,and the stocking density during the adult fish breeding period was 35 383 ind./hm~2.The output was 11 151 kg/hm~2,with a total investment of 210 300 yuan.The yield of adult fish was 8 390 kg.The total sales amount reached 302 800 yuan, with a net profit of 92 500 yuan and an output value of 122 900 yuan/hm~2.The results indicated that the growth cycle of the largemouth bass was extended in Gansu Province and fries cultivated in the same year reached market specifications in the same year.更多还原