| 长期不同施肥处理对棕壤氮储量的影响 |
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| 引用本文： | 高晓宁,韩晓日,战秀梅,孙振涛,姜琳琳,陈赫.长期不同施肥处理对棕壤氮储量的影响[J].植物营养与肥料学报,2009,15(3):567-572. |
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| 作者姓名： | 高晓宁 韩晓日 战秀梅 孙振涛 姜琳琳 陈赫 |
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| 作者单位： | 1.沈阳农业大学土地与环境学院、辽宁省农业资源与环境重点实验室,辽宁沈阳 110161 |
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| 摘 要： | 为揭示施肥对棕壤氮素状况的影响，利用29年长期肥料定位试验，研究了不同施肥处理条件下土壤全氮在0―60 cm土层的分布特征，并在此基础上计算0―60cm土层氮库的储量变化。结果表明，不同施肥处理土壤全氮含量、C/N比值均随土层深度增加而降低，其影响主要表现在表层；而对0―60cm 土层全氮储量有显著性影响（P0.05）。长期不同施肥处理后土壤全氮及其储量变化趋势是:高量有机肥区＞低量有机肥区＞化肥区＞无肥区＞试验前（1979年），特别是高量有机肥和化肥配合施用效果最显著；单施化肥处理土壤全氮含量和储量虽有缓慢提高，但差异不显著。说明土壤氮素含量的提高与施肥措施密切相关，有机肥和化肥配合施用能提高土壤全氮含量和储量，是维持土壤肥力的最优施肥方式。
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| 关 键 词： | 土壤全氮 全氮储量 C/N比 长期定位施肥 |
| 收稿时间： | 2008-7-25 |
Effect of long-term fertilization on total nitrogen storage in a brown soil |
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| GAO Xiao-ning,HAN Xiao-ri,ZHAN Xiu-mei,SUN Zhen-tao,JIANG Lin-lin,CHEN He.Effect of long-term fertilization on total nitrogen storage in a brown soil[J].Plant Nutrition and Fertilizer Science,2009,15(3):567-572. |
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| Authors: | GAO Xiao-ning HAN Xiao-ri ZHAN Xiu-mei SUN Zhen-tao JIANG Lin-lin CHEN He |
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| Affiliation: | 1.College of Land and Environment Science,Shenyang Agricultural University,Key Laboratory of Agricultural Resource and Environment in Liaoning Province,Shenyang,Liaoning 110161
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| Abstract: | Soil nitrogen (N) is an important indicator of soil fertility, which is affected by natural factors and fertilization practices. The changes of N in 0-60cm layer of a brown soil in a long-term fertilizer location experiment (29 years) were studied. Results showed that soil total nitrogen (TN) and the C/N ratio significantly declined with depth. Different fertilizer treatments not only significantly affected TN contents and the C/N ratio in the topsoils, but also the soil total nitrogen storage in 0-60cm soil layer. The storage of soil total N followed the order: high level of organic manure treatment ＞low level of organic manure treatment ＞fertilizer treatment ＞check treatment ＞the formal soil (1979). Combine application inorganic fertilizers and high level of organic manure had the most significant impact on TN and the soil nitrogen storage. Although single application inorganic fertilizer could enhance the concentration, but less significance compared to combine application with organic fertilizer, indicating the changes of soil total nitrogen content closely related to the different fertilization. Manure plus mineral fertilizer increased the content of TN and TN storage, and was considered the best way for maintaining the soil fertility and sustainable agriculture. |
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| Keywords: | soil total nitrogen soil nitrogen storage C/N ratio long term fertilization |
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