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| 不同外源氮对石灰性土壤硝化作用的影响及其动力学分析 | |
| 引用本文： | 张国桢,黄占斌,李世清,邓振义,张清杉.不同外源氮对石灰性土壤硝化作用的影响及其动力学分析[J].植物营养与肥料学报,2011,17(5):1147-1155. |
| 作者姓名： | 张国桢 黄占斌 李世清 邓振义 张清杉 |
| 作者单位： | 1. 杨凌职业技术学院,陕西杨陵,712100 2. 中国矿业大学（北京）化学与环境工程学院,北京100083／中国科学院水利部水土保持研究所黄土高原土壤侵蚀与旱地农业国家重点实验室,陕西杨陵712100 3. 中国科学院水利部水土保持研究所黄土高原土壤侵蚀与旱地农业国家重点实验室,陕西杨陵,712100 |
| 基金项目： | 国家自然科学基金(40971164); 黄土高原土壤侵蚀与旱地农业国家重点试验室基金(10501-258); 国家十二五“863”课题(2011AA100503)资助 |
| 摘 要： | 为了揭示外源氮源对石灰性土壤硝化作用的影响机理,以钙积半干润均腐土（Cal-Ustic Isohumasols）为材料,采用室内培养方法研究了不同添加量和不同氮源对土壤硝化作用的影响,并建立了对应的硝化模型。结果表明,NH4+-N消耗速率和NO3--N增加速率呈S曲线变化,NH4+-N消耗速率高于NO3--N增加速率。氮素添加量与NH4+-N消耗速率和NO3--N增加速率呈正相关,硝化菌外的因子对NH4+-N和NO3--N的吸收与NH4+-N添加量呈正相关;不同氮素添加量对硝化作用影响程度不同,当氮素添加量为N 75 mg /kg,干土时,硝化作用较彻底。SO42-可加快硝化作用速率,同时也可改变其他因子对NH4+-N和NO3--N的利用。 |
| 关 键 词： | 石灰性土壤 外源氮源 硝化作用 Michaelis-menten动力学方程 |
| 收稿时间： | 2010-09-17 |
Effects of different exogenous nitrogen sources on nitrification in limy soil and its kinetic analysis |
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| ZHANG Guo-zhen,HUANG Zhan-bin,LI Shi-qing,DENG Zhen-yi,ZHANG Qing-shan.Effects of different exogenous nitrogen sources on nitrification in limy soil and its kinetic analysis[J].Plant Nutrition and Fertilizer Science,2011,17(5):1147-1155. | |
| Authors: | ZHANG Guo-zhen HUANG Zhan-bin LI Shi-qing DENG Zhen-yi ZHANG Qing-shan |
| Institution: | ZHANG Guo-zhen1,HUANG Zhan-bin2,3,LI Shi-qing3,DENG Zhen-yi1,ZHANG Qing-shan1(1 Yangling Vocational & Technology College,Yangling,Shaanxi 712100,China,2 School of Chemical and Environmental Engineering,China University of Mining and Technology-Beijing,Beijing 100083,3 State Key Laboratory of Soil Erosion and Dryland Farming on Loess Plateau,Institute of Soil and Water Conservation,CAS and Ministry of Water Resources,China) |
| Abstract: | In order to understand the mechanism of nitrification in limy soil for different exogenous nitrogen sources,the study was conducted to investigate the effects of different additive amounts and nitrogen sources on the nitrification in fresh Cal-Ustic Isohumasols by using the plot experiment,and the corresponding model was obtained.The results show that the curve between the ammonium nitrate consumption rate and nitrogen nitrate increasing rate can be described as an S shape,and the ammonium nitrate consumpti... |
| Keywords: | limy soil exogenous nitrogen sources nitrification Michaelis-menten kinetics |
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