| 摘要: |
| 采用水体中设置生物膜净水栅对比实验的方法, 在12 口土池开展生物膜原位修复技术对土池淡水养殖日本鳗鲡的节水减排、养殖效益及机理的研究。结果表明, 在172d的养殖期间, 处理组比对照组节水减排78% (P<0.01); 处理组的氨氮、NO2-N 、CODMn、溶解性正磷酸盐和浊度分别低于对照组31.7%、49.7%、29.6%、24.2%和26.2% (P<0.01); 藻类密度的变化幅度及蓝藻相对密度分别低于对照组58.8%、52.6% (P<0.01); 净产量、起捕尾重和生长速度分别高出对照组38%、22.7%和27.1% (P<0.01); 饲料系数低于对照组14.2% (P<0.01); 处理组每公顷池塘增加养殖利润约77.25万元。池塘生物膜原位修复低碳养殖技术具有成本低、节水减排、增产增收、操作简便与易推广等优点, 具有广阔的应用前景。 |
| 关键词: 鳗鲡, 池塘低碳养殖, 生物膜, 生物修复, 节水减排, 水质净化 |
| DOI：10.11693/hyhz201206015015 |
| 分类号: |
| 基金项目:福建省海洋与渔业重点项目, 闽海渔合同[2010]2-10号; 福建省教育厅A类自然科学研究项目, 闽教科[2010]35号; 厦门市科技局高校创新项目, 3502Z20113026 号。 |
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| A STUDY ON JAPANESE EEL ANGUILLA JAPONICA LOW-CARBON AQUACULTURE TECHNIQUE OF BIOFILM IN-SITU BIOREMEDIATION IN EARTHERN POND |
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JIANG Xing-Long1,2
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1.Fisheries College, Jimei University;2.Engineering Research Centerof the Modern Industry
Technology for Eel, Ministry of Education
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| Abstract: |
| To study the effect of saving water and reducing pollution, culture benefit and mechanism of the technique of biofilm in-situ bioremediation of earthern pond ecosystem for eel intensive culture, the trial was implemented, which included the treatment with biofilm purifying water bar, set in earthern ponds for biofilm developed, and the control without the bar, and used 12 freshwater earthern ponds with Japanese eel (Anguilla japonica) intensively cultivating. The results showed, during the 172 days eel cultivation trial, the treatment saved 78% water exchanged than the control significantly (P<0.01); the concentrations of TAN, NO2-N, CODMn, soluble reactive phosphate and turbidity in the treatment were significantly decreased at 31.7%, 49.7%, 29.6%, 24.2% and 26.2% than the control respectively (P<0.01); the variety range of algae density and blue algae relative density in the treatment were significantly decreased at 58.8% and 52.6% than the control respectively (P<0.01); the treatment increased net yield, eel harvest size and growth rate at 38%, 22.7% and 27.1% respectively (P<0.01), and decreased feed conversion rate at 14.2% (P<0.01) than the control; the treatment increased profit about 772.5 thousand yuan per hectare than the control. In conclusion, pond low-carbon aquaculture technique of biofilm in-situ bioremediation had advantages, such as low cost, saving water and reducing pollution, increasing yield and profit, convenient operation and easy for extension. Therefore, the technique would have a great extension prospect. |
| Key words: Eel, Pond low-carbon aquaculture, Biofilm, Bioremediation, Saving water and reducing pollution, Water quality improvement |
