| 长期施肥对黑土团聚化作用及碳、氮含量的影响 |
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| 作者单位： | 中国科学院沈阳应用生态研究所陆地生态过程重点实验室，辽宁省稻作研究所，辽宁沈阳农田生态系统国家野外科学观测研究站，吉林省农业科学院 |
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| 摘 要： | 利用田间定位试验,研究了长期施用有机肥和化肥对黑土团聚化作用及碳、氮含量的影响。团聚体分级结果表明,小团聚体是土壤的主要组成部分,占土壤重量的48.86%~60.24%。长期施用有机肥可显著增加土壤中大团聚体的比例,提高土壤团聚体的稳定性;而化肥的施用则增加了土壤中微团聚体和粉 黏粒的含量,降低土壤团聚体的稳定性。施用有机肥能显著增加土壤有机碳和总氮的含量,而化肥只有与有机肥配施时才能显著增加土壤有机碳和总氮的含量。有机肥的施用能够降低土壤C/N,表明有机肥的施用更有利于土壤氮素水平的提高。
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| 关 键 词： | 黑土 团聚体 碳 氮 有机肥 化肥 |
Effect of Long-term Fertilization on Aggregation and Carbon and Nitrogen Contents in Mollisol |
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| CHENYing,YANYing,ZHANGMan-li,HEHong-bo,XIEHong-tu,ZHANGXu-dong,ZHUPing. Effect of Long-term Fertilization on Aggregation and Carbon and Nitrogen Contents in Mollisol[J]. Computer Science, 2008, 0(6) |
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| Authors: | CHENYing YANYing ZHANGMan-li HEHong-bo XIEHong-tu ZHANGXu-dong ZHUPing |
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| Abstract: | The effect of long-term organic and chemical fertilizer application on aggregation and carbon and nitrogen contents in mollisol was investigated through long-term located experiment. The results of aggregate fractionation showed that small aggregate was d |
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| Keywords: | Mollisol Aggregate Carbon Nitrogen Manure Chemical fertilizer |
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