| 摘要: |
| 于1995年7–9月，在烟台市黄海水产集团公司第二养虾场，采用围隔实验法研究了海水池塘混合施肥养殖台湾红罗非鱼的鱼产力、负荷力和最适放养量。实验中每个围隔面积为5m×5m，各设1台90W的搅水机（4800r/h）。每日施肥基准为：鸡粪干物质，25kg/ha;：氮肥，N 0.15×10-6；磷肥，P 0.015×10-6。结果表明，静水海水池塘混合施肥的鱼产力为0.79g/(m2*d)，池塘对台湾红罗非鱼的负荷力为1796.0 kg/ha，鱼（体重70g/ind）的最适放养量约为8000ind/ha。 |
| 关键词: 海水池塘 围隔 施肥 台湾红罗非鱼 鱼产力 负荷力 |
| DOI：10.11693/hyhz200002001001 |
| 分类号: |
| 基金项目:国家自然科学基金重点项目，39430102号;国家攀登计划B资助项目，PDB-6-7-3号 |
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| FISH PRODUCTIVITY AND CARRYING CAPACITY OF FERTILIZED SEAWATER PONDS FOR TILAPIA CULTURE |
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YANG Hong-sheng, LI De-shang, DONG Shuang-lin, LU Jing-rang, XU Ning, ZHANG Hong-yan
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Fishery College, Ocean University of Qingdao, Qingdao 266003
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| Abstract: |
| During July 10–September 15, 1995, the experiment was carried out at No.2 Shrimp Farm, Huanghai Aquatic Product Group Co., Yantai, China. Four land-based enclosures (each 5m×5m in size) set in a seawater pond and each equipped with a special water stirrer (90W) were used to conduct the experiment. Fish productivity, carrying capacity, and the optimal stocking density of seawater ponds for culturing Taiwan red tilapia (Oreochromis mossambicus(/i) × O. niloticus) with a combination of chicken manure and chemical fertilizers (urea and diammoniun phosphate) were studied. The standard quantities of fertilizers applied per day in the enclosures were: chicken manure 25kg dry matter/ha, nitrogen 0.15×10-6, and phosphorus 0.015×10-6.During the experiment, the water temperature was 19.7–31.9°C, and the salinity was 30.0–35.5. The results show that the fish productivity of fertilized seawater ponds was 0.79 g/(m2*d), the carrying capacity was 1796.0kg/ha, and the optimal stocking density of Taiwan red tilapia (70g/ind.) was about 8000ind/ha. The utilization ratios of nitrogen and phosphorus by the tilapia in each enclosure were 7.20%–11.90% in nitrogen and 3.21%–5.27% in phosphorus, respectively. |
| Key words: Seawater pond, Enclosure, Fertilization, Taiwan red tilapia, Fish productivity, Carrying capacity |
