| 不同时期施用生物炭对稻田N_2O和CH_4排放的影响 |
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| 引用本文： | 李 露,周自强,潘晓健,熊正琴.不同时期施用生物炭对稻田N_2O和CH_4排放的影响[J].土壤学报,2015,52(4):839-848. |
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| 作者姓名： | 李 露 周自强 潘晓健 熊正琴 |
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| 作者单位： | 南京农业大学资源与环境科学学院,南京农业大学资源与环境科学学院,南京农业大学资源与环境科学学院,南京农业大学资源与环境科学学院,南京农业大学资源与环境科学学院 |
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| 基金项目： | 国家自然科学基金项目（面上项目） |
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| 摘 要： | 通过分别在水稻季(R)和小麦季(W)设置对照(RB0-N0、WB0-N0)、单施氮肥(RB0-N1、WB0-N1)、20 t hm-2生物炭与氮配施(RB1-N1、WB1-N1)、40 t hm-2生物炭与氮配施(RB2-N1、WB2-N1)等8个处理,研究稻麦轮作周年系统N2O和CH4排放规律及其引起的综合温室效应(Global warming potential,GWP)和温室气体强度(Greenhouse gas intensity,GHGI)特征。结果表明:稻季配施20 t hm-2生物炭对N2O和CH4的排放、作物产量及GWP和GHGI均都无明显影响;稻季配施40 t hm-2生物炭能显著降低8.6%的CH4的排放和9.3%的GWP,显著增加作物产量17.2%。麦季配施20 t hm-2生物炭虽然对温室气体及GWP影响不明显,但显著增加21.6%的作物产量,从而显著降低21.7%的GHGI;麦季配施40 t hm-2生物炭能显著降低20.9%和11.3%的N2O和CH4排放,显著降低15.7%和23.5%的GWP和GHGI。因此麦季配施生物炭对减少N2O和CH4的排放、增加稻麦轮作产量及降低GWP和GHGI的效果较稻季配施生物炭效果更好。
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| 关 键 词： | 生物炭 N2O排放 CH4排放 综合温室效应 温室气体强度 |
| 收稿时间： | 2014/7/16 0:00:00 |
| 修稿时间： | 2014/10/29 0:00:00 |
Effects of biochar on N2O and CH4 emissions from paddy field under rice-wheat rotation during rice and wheat growing seasons relative to timing of amendment |
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| Li Lu,Zhou Ziqiang,Pan Xiaojian and Xiong Zhengqin.Effects of biochar on N2O and CH4 emissions from paddy field under rice-wheat rotation during rice and wheat growing seasons relative to timing of amendment[J].Acta Pedologica Sinica,2015,52(4):839-848. |
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| Authors: | Li Lu Zhou Ziqiang Pan Xiaojian and Xiong Zhengqin |
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| Institution: | Jiangsu Key Laboratory of Low Carbon Agriculture and GHGs Mitigation, College of resources and environmental sciences, Nanjing Agricultural University,Jiangsu Key Laboratory of Low Carbon Agriculture and GHGs Mitigation, College of resources and environmental sciences, Nanjing Agricultural University,Jiangsu Key Laboratory of Low Carbon Agriculture and GHGs Mitigation, College of resources and environmental sciences, Nanjing Agricultural University,Jiangsu Key Laboratory of Low Carbon Agriculture and GHGs Mitigation, College of resources and environmental sciences, Nanjing Agricultural University,Jiangsu Key Laboratory of Low Carbon Agriculture and GHGs Mitigation, College of resources and environmental sciences, Nanjing Agricultural University |
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| Abstract: | A field experiment was carried out in a paddy field under rice-wheat rotation, to study effects of biochar amended at the rice or wheat season on paddy CH4 and N2O emissions throughout the cycle of rotation, their consequential global warming potential (GWP) and greenhouse gas intensity (GHGI), with a view to providing some scientific basis for extrapolation of the use biochar in mitigating global warming potentials and in agricultural production as well. The field experiment was designed to last an entire cycle of crop rotation, that is, two cropping seasons, rice season and wheat season, and to have eight treatments in triplicate, i.e. Treatment RB0-N0 or CK (zero N fertilizer applied |
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| Keywords: | Biochar N2O emission CH4 emission Global warming potential Greenhouse gas intensity |
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