| 摘要: |
| 利用室内装置模拟的刺参养殖池塘上覆水，在温度为25℃，光照为（4000±200）Lux条件下静态培养刚毛藻48 h，定时测定上覆水中总氮（TN）、氨态氮（NH4+-N）、硝态氮（NO3--N）、亚硝态氮（NO2--N）、总磷（TP）、活性磷（PO43--P）等营养盐含量，分析了氮磷营养盐含量的动态变化规律，探讨了刚毛藻生物量对沉积物-水界面营养盐含量变化的影响。结果表明，刚毛藻生物量对各营养盐含量的影响存在显著性差异（p<0.05）。随着培养时间延长，上覆水中营养盐含量均呈现先增大后减小的趋势。上覆水中各营养盐含量在培养6-24 h时分别达到最大值，其中当刚毛藻生物量为5-45 g时，TN、NO3--N、NO2--N、NH4+-N、TP、PO43--P含量达到最大值。继续培养，上覆水中各营养盐的含量逐渐减小，其中生物量为8.5 g/L时刚毛藻对NO3--N、NO2--N的吸收效果最好；生物量为0.5 g/L时刚毛藻对NH4+-N、PO43--P吸收效果最好。因此，高生物量（8.5 g/L）刚毛藻可降低上覆水中NO3--N、NO2--N含量，但低生物量（0.5 g/L）刚毛藻能有效吸收上覆水中的NH4+-N、PO43--P。 |
| 关键词: 刺参养殖池塘 刚毛藻 上覆水 营养盐 |
| DOI： |
| 分类号:S9 |
| 基金项目:国家自然科学基金项目（面上项目，重点项目，重大项目） |
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| Effect of Cladophora sp. on the content of nutrient in overlying water from the pond breeding of Apostichopus japonicus |
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Cao Xuebin1, Ma Weiwei2, Li Qi2, Wu Chunmei2, Wu Caimi2, Jiang Aili2, Xing Ronglian2
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1.National Algae and Sea Cucumber Project Technology Research Centre,Shandong Oriental Ocean Sci-Tech Co,LTD;2.School of Life Science,YanTai University
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| Abstract: |
| To study the effect of Cladophora sp. on the nutrient in sediment-water interface, laboratory static culture was conducted. The temperature was 25℃, light intensity was （4000±200）Lux. The content of total nitrogen (TN), ammonia nitrogen (NH4+-N), nitrate (NO3--N), nitrite nitrogen (NO2--N), total phosphorus (TP), reactive phosphorus (PO43--P) in the overlying water was measured periodically. The main results were given as follows: There were significant differences between the nutrient content caused by the biomass of Cladophaora sp. (p<0.05), and their content increased first and decreased with a peak in 6 -24 h. The maximum concentration of TN, NO3--N,NO2--N,NH4+-N, TP, PO43--P was that the amount of algae was 0.5-4.5 g/L. The content of each nutrient gradually decreased, and reached the minimum value when the culture time was more than 24 h. When the biomass was 8.5 g/L, the absorption of NO3--N and NO2--N was the best; the biomass of 0.5 g/L was the best for the absorption of NH4+-N and PO43--P. Therefore, high biomass (8.5 g/L) Cladophora sp. can reduce NO3--N and NO2--N content in overlying water, but low biomass (0.5 g/L) Cladophora sp. can effectively absorb NH4+-N and PO43--P in overlying water. |
| Key words: the pond breeding Apostichopus japonicus cladophora overlying water nutritive salt |