| 摘要: |
| 对在不同N/P（1∶1,5∶1,16∶1,50∶1,100∶1）培养条件下，铜绿微囊藻的生长和营养生理特征进行了研究。结果表明，在N/P=16∶1的条件下，铜绿微囊藻的生长速度最快，细胞生物量最高；N/P小于16时,铜绿微囊藻的生长状态较N/P大于16时好，说明其生长主要受磷的限制。藻细胞碳水化合物的含量也受N/P的影响，其含量表现为16∶1>5∶1>1∶1>50∶1>100∶1；此外，藻细胞叶绿素含量随N/P的增加而降低。 |
| 关键词: N/P 铜绿微囊藻 碳水化合物 叶绿素 |
| DOI： |
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| 基金项目:国家“973”重大基础科研项目(2002CB412300) |
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| Effects of N/P ratios on the growth and some biochemical constituents of Microcystis aeruginosa |
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| Abstract: |
| The characteristics of the growth and physiology of Microcystis aeruginosa were studied in different N/P (1∶1,5∶1,16∶1,50∶1,100∶1) status,and batch culture experiments were conducted.Growth rate,Chl-a and carbohydrate were measured periodically.The results showed that,when the optimum N/P ratio of Microcystis aeruginosa was 16∶1 it grew fastest;when N/P was lower higher than 16,the growth was much better than when it was higher than 16,so phosphate was the factor limiting the growth of Microcystis aeruginosa.Obviously affected by different N/P ratios,the contents of carbohydrate showed:16∶1>5∶1>1∶1>50∶1>100∶1；moreover,the chlorophyll-a concentration decreased with the increase of N∶P ratios. |
| Key words: N/P ratios Microcystis aeruginosa carbohydrate chlorophyll-a |
