论文部分内容阅读
在当前对虾养殖成本高、效益差的情况下,天津市从1989年开始在对虾养殖池中套养海湾扇贝,以提高其经济效益,旨在改变天津市海水养殖品种单一化。1990年在大港区扩大试验池82亩,对照池40亩,于当年6月13日进贝苗,规格0.43厘米,贝苗先经7～10天暂养,然后于6月中旬投放平均规格3.5厘米,养殖方式以地播为主笼养为辅,地播每亩施放8900粒,笼养平均每层30～40粒,在整个养殖期间对贝苗只
In the current situation of high cost and poor efficiency of shrimp farming, Tianjin began to raise gulf scallops in shrimp culture ponds in 1989 to improve its economic benefits and to change the unitization of marine culture in Tianjin. Dagang District in 1990 to expand 82 acres of test ponds, control pool 40 acres, on June 13 that year into the shell seedlings, size 0.43 cm, shellfish after 7 to 10 days holding, and then put in mid-June the average specification of 3.5 Cm, farming methods to broadcast sowing mainly supported, to broadcast sowing 8900 per mu, cage average of 30 to 40 per layer, throughout the breeding period of shellfish only