| 蕹菜幼苗对NH3-N和P的吸收动力学研究 |
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| 引用本文： | 张亚娟,刘存歧,李洪波,吴亦红.蕹菜幼苗对NH3-N和P的吸收动力学研究[J].安徽农业科学,2011,39(4):1897-1898,1901. |
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| 作者姓名： | 张亚娟 刘存歧 李洪波 吴亦红 |
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| 作者单位： | 河北大学生命科学学院,河北保定,071002;河北省环境科学研究院,河北石家庄,050051 |
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| 基金项目： | 保定市科技局指导计划项目，国家水体污染控制与治理科技重大水专项 |
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| 摘 要： | 目的]探讨蕹菜（Lpomoea aquatica）幼苗对NH3-N和P的吸收动力学特性,为富营养化水体的生态修复提供参考。方法]采用改进的常规耗竭法,用Michaelis-Menten方程来描述蕹菜对NH3-N吸收速率与溶液浓度的相互关系,用一元二次多项式表示营养液中P的浓度与时间的关系。结果]蕹菜对NH3-N的最大吸收常数Vmax为2.162μmol/（gFW.h）,亲和力常数Km为0.403 mmol/L,NH3-N浓度为0~0.25 mmol/L,吸收速率随着浓度的升高而增加,超过该浓度范围,吸收速率不再增加,逐渐趋于饱和。对P的最大吸收速率为6.442μg/（gFW.h）,亲和力常数为0.65 mg/L,P的浓度随着吸收时间的延长而减少,导致P浓度的降低,从而使吸收速率也相应的降低。结论]蕹菜对NH3-N和P的吸收效果良好。
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| 关 键 词： | 蕹菜 氨氮 磷 吸收动力学 |
Absorption Kinetics of Ammonia Nitrogen and Phosphorus in Ipomoea Aquatica |
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| ZHANG Ya-juan et al.Absorption Kinetics of Ammonia Nitrogen and Phosphorus in Ipomoea Aquatica[J].Journal of Anhui Agricultural Sciences,2011,39(4):1897-1898,1901. |
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| Authors: | ZHANG Ya-juan |
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| Institution: | ZHANG Ya-juan et al(College of Life Sciences,Hebei university,Baoding,Hebei 071002) |
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| Abstract: | Objective] To investigate the the absorption kinetics characteristics of ammonia nitrogen and phosphorus by Lpomoea aquatica seeding,and provide a theoretical basis for metabolic regulation of eutrophic water purification.Method] The relationship between ammonia nitrogen uptake rate and concentration was depicted using the Michaelis-Menten equation.The quadratic polynomial was used for describing the connection between phosphorus concentration in solution and uptake hours.Result] The maximum ammonia nitr... |
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| Keywords: | Lpomoea aquatica Ammonia nitrogen Phosphorus Absorption kinetics |
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