| 引用本文： |
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王翔宇,吴海一.浒苔的营养盐吸收及生长特性研究[J].广西科学院学报,2015,31(4):243-246,252. [点击复制]
- WANG Xiang-yu,WU Hai-yi.Nutrient Uptaking and Growth Performance of Ulva prolifera[J].Journal of Guangxi Academy of Sciences,2015,31(4):243-246,252. [点击复制]
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| 摘要: |
| [目的]了解浒苔(Ulva prolifera)在富营养化状态下对氮磷吸收的作用以及生物量增长的规律,为浒苔绿潮的治理及利用提供参考。[方法]设置2个营养盐浓度组,采用国家标准方法检测不同时间水体中可溶性无机氮(DIN)和PO43--P的浓度,考察浒苔对氮磷的吸收效率;设置不同温度和营养盐浓度组合,定时测量藻体重量,并据此了解浒苔的生长特性。[结果]在本实验条件下,浒苔最高吸收了水体中62.2%的DIN和27.5%的PO43--P,吸收速率分别达到0.022 mg N/(g·h)和0.006 mg P/(g·h);浒苔在各实验组生长都较快,其中在15℃,N:P(mg/L)=3:0.3的条件下生长最快,日特异生长率达9.44%,8 d生物量就能加倍;在20℃,不添加氮磷的情况下生长最慢,但也只需13 d生物量就能翻倍。[结论]浒苔能够较好的吸收氮磷营养盐,但其生长速度也较快。 |
| 关键词: 浒苔 氮磷吸收 生长特性 |
| DOI： |
| 投稿时间：2015-07-10 |
| 基金项目:海洋公益性行业科研专项经费项目(201305021,201405010)和青岛市市南区科技发展资金项目(2013-12-005-SW)资助。 |
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| Nutrient Uptaking and Growth Performance of Ulva prolifera |
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WANG Xiang-yu, WU Hai-yi
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| (Marine Biology Institute of Shandong Province, Qingdao, Shangdong, 266104, China) |
| Abstract: |
| [Objective] The nutrient uptaking and growth of Ulva prolifera was measured in the laboratory, in order to provide a reference for management and utilization of Ulva prolifera.[Methods] The concentrations of DIN and PO43--P in water under two nutrient concentration were tested by national standard. The weight of algae under different temperature and nutrient concentration was timely measured.[Results] The results showed that the maximum percentages of DIN and PO43--P absorbed by U.prolifera were 62.2% and 27.5%, and the uptaking rates were 0.022 mg N/(g·h) and 0.006 mg P/(g·h).U.prolifera grew fast under various experimental conditions.The max SGR was 9.44% with the doubled weight after 8 d when the temperature was 15℃ and added N:P(mg/L)=3:0.3.When the temperature was 20℃ without adding chemicals, the growth was the slowest and the weight doubled after 13 d.[Conclution] U.prolifera showed the characteristics of high nutrients absorbance and growth rate. |
| Key words: Ulva prolifera nitrogen and phosphorus absorption growth characteristics |
