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不同氮、磷浓度下亚心形扁藻的生长及水体中氮、磷变化
引用本文:孙育平,赵曰水.不同氮、磷浓度下亚心形扁藻的生长及水体中氮、磷变化[J].水产科学,2011,30(4):197-201.
作者姓名:孙育平  赵曰水
作者单位:1. 暨南大学,水生生物研究所,广东,广州,510632
2. 昆明市疾病预防控制中心,云南,昆明,650228
基金项目:国家自然科学基金资助项目(30670345)
摘    要:自然条件下,采用湛水107-13营养液为基础配方,在经消毒处理的天然海水中添加不同氮、磷质量浓度的营养盐进行亚心形扁藻的培养。结果表明,当氮、磷质量比为17时,最适合亚心形扁藻的生长。不同磷质量浓度梯度对亚心形扁藻的生长和生长率K具有显著性的影响(P<0.05)。当磷质量浓度为8 mg/L时,其相对生长常数和生长率K值均高于其他质量浓度处理。不同氮质量浓度梯度对亚心形扁藻生长具有显著性影响(P<0.05),但对亚心形扁藻生长率K的影响不显著(P>0.05)。高质量浓度氮对亚心形扁藻的生长影响作用最大(P<0.05)。在培养过程中,高质量浓度氮、磷培养液中NO3--N和PO43--P的下降速率高于低质量浓度中NO3--N和PO43--P浓度的变化,并呈现出显著性的差异(P<0.05)。表明在高质量浓度营养盐条件下培养亚心形扁藻,会导致营养盐相对利用率的下降。

关 键 词:亚心形扁藻      生长

The Growth and Variations in Nitrogen and Phosphorus Levels of Alga Platymonas subcordiformis Cultured in Different Concentrations of Nitrogen and Phosphorus in Culture Tanks
SUN Yu-ping,ZHAO Yue-shui.The Growth and Variations in Nitrogen and Phosphorus Levels of Alga Platymonas subcordiformis Cultured in Different Concentrations of Nitrogen and Phosphorus in Culture Tanks[J].Fisheries Science,2011,30(4):197-201.
Authors:SUN Yu-ping  ZHAO Yue-shui
Institution:SUN Yu-ping1,ZHAO Yue-shui2 (1.Institute of Hydrobiology,Jinan University,Guangzhou 510632,China,2.Kunming Center for Disease Control and Prevention,Kunming 650228,China)
Abstract:Alga Platymonas subcordiformis was cultivated in Zhanshui 107-13 nutrient medium containing different concentrations of nitrogen and phosphorus.The relationship between the alga growth and the dynamic of NO-3-N and PO3-4-P concentrations were investigated at a natural condition.The optimum N/P ratio for the alga growth was found to be 17.There were higher relative growth index and the growth rate in the alga cultivated at phosphorus rate of 8 mg/L than those at the other concentrations(P<0.05).The alga had ...
Keywords:Platymonas subcordiformis  nitrogen  phosphorus  growth  
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