| 摘要: |
| 在实验室条件下, 设置不同的N、P 浓度, 研究单因子(P: 30 μmol/L, N: 0～500 μmol/L 和N: 500μmol/L, P: 0～30 μmol/L)对浒苔(Enteromorpha prolifera)生长的影响。结果表明: 在高N、P 浓度(N: 500μmol/L, P: 30 μmol/L)条件下浒苔生长态势最好, 具有较高的相对生长率(0.451)。添加N 可以明显促进浒苔的生长, 而且随着添加N 浓度的提高促进作用增强, 浒苔的相对生长率有较大幅度提高。添加P对浒苔的生长也具有一定的促进作用, 但促进作用不如添加N 的明显; 随着添加P 浓度的提高, 浒苔的相对生长率提高幅度不大, 这说明浒苔生长对N 变化更为敏感。
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| 关键词: 浒苔(Enteromorpha prolifera) 氮 磷 |
| DOI： |
| 分类号: |
| 基金项目:中国科学院知识创新重要方向项目(KZCX2-YW-208-01) |
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| Preliminary study on the effects of nitrogen and phosphorus on the growth of Enteromorpha prolifera |
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LI Jian-ping,ZHAO Wei-hong,FU Min,MIAO Hui
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| Abstract: |
| In order to study the effects of nitrogen and phosphorus on the growth of Enteromorpha prolifera, nine sets of experiments with various N or P concentrations (P: 30 μmol/L, N: 0～500 μmol/L or N: 500 μmol/L, P: 0～30 μmol/L) were conducted. The results showed that the growth situation was optimal and specific growth rate of E. prolifera was maximum (0.451) in high N and P concentrations (N: 500 μmol/L, P: 30 μmol/L). The growth rate of E. prolifera was accelerated significantly upon the addition of N in a dose-dependent manner. In comparison, the promoting effect was not evident upon the addition of P. With the increasing concentration of P, the relative growth rate of E. prolifera was only enhanced marginally. The growth of E. prolifera seems more sensitive to N than to P.
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| Key words: Enteromorpha prolifera N P |
