| 羊栖菜对氮、磷的吸收速率研究 |
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| 引用本文： | 李再亮,申玉春,谢恩义,吴灶和,杜晓东.羊栖菜对氮、磷的吸收速率研究[J].河南农业科学,2011,40(3):73-77. |
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| 作者姓名： | 李再亮 申玉春 谢恩义 吴灶和 杜晓东 |
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| 作者单位： | 广东海洋大学,水产学院,南海水产经济动物增养殖广东省普通高校重点实验室,广东,湛江,524025 |
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| 基金项目： | 广东省自然基金项目，广东省科技计划项目，国家公益性行业科研专项 |
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| 摘 要： | 在实验室条件下,研究了羊栖菜对不同浓度N、P及其不同形态的N的吸收速率.结果表明:不同N、P浓度下,羊栖菜吸收N、P的速率存在显著差异(P＜0.05),羊栖菜对N、P的吸收速率随各处理组N、P浓度的升高而增加,并在N、P分别为50/μmol/L和5μmol/L时达到饱和吸收速率,其分别为1.369/μmol/(g·h)...
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| 关 键 词： | 氮 磷 吸收速率 羊栖菜 |
Preliminary Study on Uptake Rate of Nitrogen and Phosphorus by Sargassum fusi forme |
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| LI Zai-liang,SHEN Yu-chun,XIE En-yi,WU Zao-he,DU Xiao-dong.Preliminary Study on Uptake Rate of Nitrogen and Phosphorus by Sargassum fusi forme[J].Journal of Henan Agricultural Sciences,2011,40(3):73-77. |
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| Authors: | LI Zai-liang SHEN Yu-chun XIE En-yi WU Zao-he DU Xiao-dong |
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| Institution: | (Key Laboratory of Aquaculture in South China Sea for Aquatic Economic Animal of Guangdong HigherEducation Institutes,Fisheries College of Guangdong Ocean University,Zhanjiang 524025,China) |
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| Abstract: | In order to study the utilization efficiency of N and P by Sargassum fusiforme,the uptake rates at different concentrations and N/P combinations were determined under laboratory conditions.The results showed that the uptake rates of N and P by Sargassum fusiforme were significantly different(P<0.05) at different concentrations,which increased with the increase of N and P concentrations until reaching the saturated values of 1.369μmol/(g·h) and 0.143μmol/(g·h),respectively,at 50μmol/L of N and 5μmol/L of P.The uptake rate of N by Sargassum fusiforme increased with the increase of N to P until it reached the maximum value at the point of 101,and then it decreased with the increase of N to P.The maximum uptake rate of N at N concentration of 50 and 10μmol/L was 1.324 and 0.385μmol/(g·h),respectively.The effects of N to P and N concentration on the uptake rate of N by Sargassum fusiforme were significantly different(P<0.05).The effects of N to P and P concentration on the uptake rate of P by Sargassum fusiforme were also significantly different(P<0.05).The uptake rate of P reached the maximum value of 0.124μmol/(g·h) at N concentration of 50μmol/L and N to P of 51.The uptake rates of NO-3-N,NH+4-N and total inorganic N(TN) by Sargassum fusiforme were significantly different(P<0.05) at the different chemical combination of N.The uptake rate of TN by Sargassum fusiforme showed a variation tendency of M and the two peak values of 1.443μmol/(g·h)and 1.423μmol/(g·h) appeared when the value of NO-3-N/NH+4-N was 21 and 12,respectively.The uptake rate of NO-3-N by Sargassum fusiforme increased with the value of NO-3-N /NH+4-N increased while the uptake rate of NH+4-N decreased.When the value of NO-3-N/NH+4-N was 11,the uptake rate of NH+4-N by Sargassum fusiforme was higher than the uptake rate of NO-3-N.The effect of NO-3-N/NH+4-N value on uptake rate of P was not significantly different(P>0.05). |
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| Keywords: | Nitrogen Phosphorus Uptake rate Sargassum fusiforme |
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