| 长期不同施肥管理对稻田土壤有机碳库特征的影响 |
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| 引用本文： | 廖敏,彭英,陈义,谢晓梅,吴春艳,唐旭,刘玉学,杨生茂.长期不同施肥管理对稻田土壤有机碳库特征的影响[J].水土保持学报,2011,25(6):129-133,138. |
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| 作者姓名： | 廖敏 彭英 陈义 谢晓梅 吴春艳 唐旭 刘玉学 杨生茂 |
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| 作者单位： | 1. 浙江大学环境与资源学院资源科学系,杭州,310058
2. 浙江省农业科学院环境资源与土壤肥料研究所,杭州,310021;农业部杭州水稻土生态环境重点野外科学观测实验站,浙江,海宁,314409 |
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| 基金项目： | 国家公益性行业专项(201003059); 国家自然科学基金(40871148); 国际科技合作项目(2011DFA91190); 浙江省农科院学科带头人科研启动项目 |
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| 摘 要： | 以19年的长期定位施肥土壤为材料,研究不同施肥管理:不施肥(CK),施无机肥(N、NP、NK、NPK),施有机肥(OM),有机-无机配施(F、F')下稻田耕层土壤有机碳库组分及含量变化.结果表明:不同施肥方式对土壤有机碳及其组分有显著影响,土壤总有机碳(TOC)变化趋势为有机无机配施(平均12.34g/kg)>单施有机肥(平均12.15 g/kg)>无肥(平均10.56 g/kg)>化肥(平均9.78 g/kg);有机肥和化肥配施土壤徽生物量碳(SMBC)、水溶性有机碳(WSOC)、轻组有机碳(LFOC)及SMl3(2/TOC、WSOC/TOC、LFOC/TOC均显著高于单施化肥土壤的.与不施肥相比,化肥、有机肥的施用均显著增加了土壤重组有机碳(HFOC)和HFOC/TOC,其中,化肥的施用更有利于土壤重组有机碳(LFOC)的积累.单施有机肥或有机无机配施显著增加了较大粒级(>0.25 mm)水稳性团聚体及其TOC含量,而单施化肥则显著增加了较小粒级(<0.25 mm)及其TOC含量.因此,长期施用有机肥,特别是有机肥与无机肥配施能提高土壤活性碳含量和土壤团聚体稳定性,从而保持和提高了土壤质量和持续生产力.
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| 关 键 词： | 长期定位施肥 微生物量碳 水溶性有机碳 轻组有机碳 重组有机碳 水稳性团聚体碳 |
Effect of Long-term Different Fertilizer Management on Soil Carbon Stock Characteristics in Paddy Soil |
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| LIAO Min,PENG Ying,CHEN Yi,XIE Xiao-mei,WU Chun-yan,TANG Xu,LIU Yu-xue,YANG Sheng-mao.Effect of Long-term Different Fertilizer Management on Soil Carbon Stock Characteristics in Paddy Soil[J].Journal of Soil and Water Conservation,2011,25(6):129-133,138. |
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| Authors: | LIAO Min PENG Ying CHEN Yi XIE Xiao-mei WU Chun-yan TANG Xu LIU Yu-xue YANG Sheng-mao |
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| Institution: | LIAO Min1,PENG Ying1,CHEN Yi2,3,XIE Xiao-mei1,WU Chun-yan2,TANG Xu2,LIU Yu-xue2,YANG Sheng-mao2,3(1.Department of Resource Science,College of Environmental and Resource Science,Zhejiang University,Hangzhou 310058,2.Institute of Environmental Resources and Soil Fertilizer,Zhejiang Academy of Agricultural Science,Hangzhou 310021,3.Key Field Station for Monitoring of Eco-Environment of Paddy Soil in Hangzhou,the Ministry of Agriculture,Haining,Zhejiang 314409) |
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| Abstract: | A long-term(19-year) fertilization experiment was conducted to study the effects of different fertilization system on soil carbon stock and fractions.The results showed that effect of different long-term fertilization on soil carbon stock and fractions was significant.Contents of soil total organic carbon(TOC) in different fertilizations decreased in an order of combined manure and inorganic fertilizer(average 12.34 g/kg)>single organic fertilizer(average 12.15 g/kg)>no fertilizer(average 10.56 g/kg)>single... |
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| Keywords: | long-term fertilization microbial biomass carbon water-soluble organic carbon light fraction organic carbon heavy fraction organic carbon water-stable soil aggregates carbon |
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