| 不同施肥处理土壤及不同C/N比有机物料中有机N的矿化进程 |
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| 引用本文： | 鲁彩艳,陈欣.不同施肥处理土壤及不同C/N比有机物料中有机N的矿化进程[J].土壤通报,2003,34(4):267-270. |
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| 作者姓名： | 鲁彩艳 陈欣 |
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| 作者单位： | 中国科学院沈阳应用生态研究所,辽宁,沈阳,110016 |
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| 基金项目： | 国家自然科学基金项目(30100022)和国家重点基础研究发展规划项目(NKBRSFG1999011804)资助 |
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| 摘 要： | 采用室内恒温控湿好气培养试验研究长期不同施肥制度培育的土壤有机N库的供氮能力及不同C/N比有机物料掺混土壤后有机N的矿化特征与进程。结果表明:长期不同施肥制度培育的土壤有机N库的供氮能力各不相同,与不施肥处理相比,长期施用化肥或有机肥均能提高土壤的供氮能力,二者相结合可明显提高土壤供氮力;不同C/N比有机物料掺混土壤后有机N的矿化特征与物料的C/N比密切相关,有机N的矿化进程可区分为前期的快速分解和后期的缓慢分解。
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| 关 键 词： | C/N比 供氮能力 矿化特征与进程 |
| 文章编号： | 0564-3945(2003)04-0267-04 |
| 修稿时间： | 2002年5月7日 |
Mineralization Process of Soil Organic Nitrogen in Different Fertilizer Systems and Organic Materials with Different C/N Ratios |
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| LU Cai-yan,CHEN Xin.Mineralization Process of Soil Organic Nitrogen in Different Fertilizer Systems and Organic Materials with Different C/N Ratios[J].Chinese Journal of Soil Science,2003,34(4):267-270. |
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| Authors: | LU Cai-yan CHEN Xin |
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| Abstract: | A laboratory aerobic incubation test was conducted under constant temperature and moisture to study the nitrogen supply capacity of soil organic N pool of long-term different fertilizer systems and the mineralization character and process of organic N of soil and different C/N ratio organic materials.The results showed that the nitrogen supply capacity of soil organic N pool of different fertilizer systems was different respectively. Compared with control,long-term use of chemical and organic fertilizers could advance the nitrogen supply capacity of soil,and the effect of combination of chemical and organic fcrtilizers was more evident. The mieralization character of organic nitrogen of different C/N ratio organic materials was related to the C/N ratio of the materials,thus the mineralization process of organic nitrogen could be divided into the fast decomposition of prophase and the slow decomposition of anaphase. |
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| Keywords: | Carbon-nitrogen ratio Nitrogen supply capacity Mineralization character and process |
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