| 长期施肥对华北平原一种潮土有机氮组成的影响 |
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| 作者姓名： | JU Xiao-Tang LIU Xue-Jun ZHANG Fu-Suo P. CHRISTIE |
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| 作者单位： | [1]Key Laboratory of Plant-Soil Interactions, Ministry of Education, College of Agricultural Resources and Environmental Sciences, China Agricultural University, Beijing 100094 （China） [2]Agricultural and Environmental Science Department, The Queen＇s University of Belfast, Belfast BT9 5PX （UK） |
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| 摘 要： | In order to illustrate the change of nitrogen （N） supply capacity after long-term application of manure and chemical fertilizer, as well as to properly manage soil fertility through fertilizer application under the soil-climatic conditions of the North China Plain, organic N forms were quantified in the topsoil with different manure and chemical fertilizer treatments in a 15-year fertilizer experiment in a Chinese calcareous alluvial soil. Soil total N （TN） and various organic N forms were significantly influenced by long-term application of chemical fertilizer and manure. TN, total hydrolysable N, acid-lnsoluble N, amino acid N and ammonium N in the soil increased significantly （P 〈 0.05） with increasing manure and fertilizer N rates, but were not influenced by increasing P rates. Also, application of manure or N fertilizer or P fertilizer did not significantly influence either the quantity of amino sugar N or its proportion of TN. Application of manure significantly increased （P 〈 0.05） hydrolysable unknown N, but adding N or P did not. In addition, application of manure or N fertilizer or P fertilizer did not significantly influence the proportions of different soil organic N forms.
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| 关 键 词： | 肥料 施肥方法 平原 土壤 总有机氮 |
| 收稿时间： | 2005-10-12 |
| 修稿时间： | 2006-01-13 |
Effect of long-term fertilization on organic nitrogen forms in a calcareous alluvial soil on the North China Plain |
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| JU Xiao-Tang,LIU Xue-Jun,ZHANG Fu-Suo,P. CHRISTIE.Effect of long-term fertilization on organic nitrogen forms in a calcareous alluvial soil on the North China Plain[J].Pedosphere,2006,16(2):224-229. |
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| Authors: | JU Xiao-Tang LIU Xue-Jun ZHANG Fu-Suo and P CHRISTIE |
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| Institution: | Key Laboratory of Plant-Soil Interactions, Ministry of Education, College of Agricultural Resources and Environmental Sciences, China Agricultural University, Beijing 100094 (China). E-mail: juxt@cau.edu.cn;Key Laboratory of Plant-Soil Interactions, Ministry of Education, College of Agricultural Resources and Environmental Sciences, China Agricultural University, Beijing 100094 (China). E-mail: juxt@cau.edu.cn;Key Laboratory of Plant-Soil Interactions, Ministry of Education, College of Agricultural Resources and Environmental Sciences, China Agricultural University, Beijing 100094 (China). E-mail: juxt@cau.edu.cn;Key Laboratory of Plant-Soil Interactions, Ministry of Education, College of Agricultural Resources and Environmental Sciences, China Agricultural University, Beijing 100094 (China). E-mail: juxt@cau.edu.cn;Agricultural and Environmental Science Department, The Queen's University of Belfast, Belfast BT9 5PX (UK) |
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| Abstract: | In order to illustrate the change of nitrogen (N) supply capacity after long-term application of manure and chemical fertilizer, as well as to properly manage soil fertility through fertilizer application under the soil-climatic conditions of the North China Plain, organic N forms were quantified in the topsoil with different manure and chemical fertilizer treatments in a 15-year fertilizer experiment in a Chinese calcareous alluvial soil. Soil total N (TN) and various organic N forms were significantly influenced by long-term application of chemical fertilizer and manure. TN, total hydrolysable N, acid-insoluble N, amino acid N and ammonium N in the soil increased significantly (P < 0.05) with increasing manure and fertilizer N rates, but were not influenced by increasing P rates. Also, application of manure or N fertilizer or P fertilizer did not significantly influence either the quantity of amino sugar N or its proportion of TN. Application of manure significantly increased (P < 0.05) hydrolysable unknown N, but adding N or P did not. In addition, application of manure or N fertilizer or P fertilizer did not significantly influence the proportions of different soil organic N forms. |
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| Keywords: | chemical fertilizer long-term fertilization manure North China Plain soil organic nitrogen forms |
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