Abstract: In order to enrich the breeding varieties and improve the breeding technology, a comparative experiment on different densities of Micropterus salmoides stocking in the tank cultivation system was conducted. Three density groups were designed for experiment, with 2 300 ind./tank（1#group）, 3 500 ind./tank（2#group） and 5 000 ind./tank（3#group） respectively. The results showed the average body weight of the three density groups reached 401.8, 377.2 and 342.9 g, respectively. The average yields of 1#group, 2#group and 3#group were 695.1, 1 078.1 and 1 316.5 kg/tank, the fish yield per unit of water body were 27.8,43.1 and 52.7 kg/m³, the production value were 23 631.7,36 656.3 and 44 761.0 yuan/tank, respectively, the profil were 2 586.6, 8 947.6 and 11 913.6 yuan/tank.

Key words: Micropterus salmoides, pond, tank cultivation