| 有机肥氮素释放动态模型的初步研究 |
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| 引用本文： | 朱大威,黄耀,卢燕宇.有机肥氮素释放动态模型的初步研究[J].南京农业大学学报,2006,29(3):146-150. |
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| 作者姓名： | 朱大威 黄耀 卢燕宇 |
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| 作者单位： | 1. 南京农业大学资源与环境科学学院,江苏,南京,210095
2. 南京农业大学资源与环境科学学院,江苏,南京,210095;中国科学院大气物理研究所,北京,100029 |
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| 基金项目： | 国家自然科学基金;中国科学院基金 |
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| 摘 要： | 在大田填埋试验资料的基础上，假定有机肥C／N随分解时间而变，其变化规律遵循一阶动力学方程，根据作物残体分解过程中C／N的变化及业已建成的作物残体有机碳分解动态模型，建立了有机肥氮素释放动态模型。分析结果表明，模型对于有机物料初始C／N和木质素含量有较强的敏感性。利用文献资料对所建模型进行了验证，结果表明，模型对大部分数据有较好的模拟效果。本模型可以为指导有机肥的合理施用提供依据。
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| 关 键 词： | 有机肥 氮素释放 模拟模型 有机碳 |
| 文章编号： | 1000-2030(2006)03-0146-05 |
| 收稿时间： | 09 6 2005 12:00AM |
| 修稿时间： | 2005年9月6日 |
A primary study on modeling nitrogen release from organic manure |
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| ZHU Da-wei,HUANG Yao,LU Yan-yu.A primary study on modeling nitrogen release from organic manure[J].Journal of Nanjing Agricultural University,2006,29(3):146-150. |
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| Authors: | ZHU Da-wei HUANG Yao LU Yan-yu |
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| Institution: | 1,College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China; 2. Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China |
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| Abstract: | Model simulating nirogen release dynamics from organic manure is an effective approach to agricultural nitrogen management. Based on studies on the decomposition of crop residue that was incorporated into the fields, we assume that as the organic carbon decomposition proceeds, the C/N ratio change follows the first-order kinetics reaction. Thereafter, the C/N ratio variation during turnover time was incorporated into the organic carbon decomposition model to develop a model simulating organic nitrogen re- lease dynamics. In this model, the initial C/N ratio and lignin content of the organic manure was identified as the most sensitive factors to organic nitrogen release. The results of validation against published datasets indicated that the simulated model fits the in- dependent datasets well. |
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| Keywords: | C/N |
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