| 不同种植制度对稻田旱作季节CH_4和N_2O排放的影响 |
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| 引用本文： | 黄太庆,马煜春,熊正琴,孔宪旺,余丰毅. 不同种植制度对稻田旱作季节CH_4和N_2O排放的影响[J]. 生态与农村环境学报, 2010, 26(6) |
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| 作者姓名： | 黄太庆 马煜春 熊正琴 孔宪旺 余丰毅 |
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| 作者单位： | 南京农业大学资源与环境科学学院,江苏,南京,210095 |
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| 基金项目： | 国家自然科学基金(40971139); 教育部新世纪人才支持计划(NCET-10-0475); 南京市科技发展计划(200901063); 国际合作项目(DE-FG02-08ER64515); 国家重点基础研究计划(2009CB118603) |
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| 摘 要： | 通过大田试验研究了稻田旱作季节几种典型种植制度对CH4和N2O排放的影响,包括休闲(fallow)、油菜对照(OR-ck)、小麦对照(W-ck)、油菜施N(OR-N)和小麦施N(W-N)5个处理。试验结果表明,稻田旱作季节N2O排放明显,CH4排放量较低,甚至表现为弱的CH4汇。稻田旱作季节N2O排放除受到N肥和种植制度影响外,还受土壤含水量影响,施N处理显著促进了N2O排放,降雨后N2O排放明显。小麦和油菜施N处理N2O平均排放通量分别为18.51和13.47μg.m-2.h-1,季节累积排放量分别为87.31和59.48 mg.m-2,均显著高于对照和休闲处理。不同作物种类间N2O平均排放通量无显著差异,N2O季节累积排放量则表现为小麦显著高于油菜。各处理综合温室效应(100 a)依次为:OR-NW-NW-ckfallowOR-ck。各施N处理综合温室效应以N2O为主,但各无N处理则以CH4为主,也不容忽视。
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| 关 键 词： | CH4 N2O 稻田 旱作 种植制度 小麦 油菜 综合温室效应 |
CH_4 and N_2O Emissions From Paddy Field During the Upland Crop Growing Season in Relation to Cropping Pattern |
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| HUANG Tai-qing,MA Yu-chun,XIONG Zheng-qin,KONG Xian-wang,YU Feng-yi. CH_4 and N_2O Emissions From Paddy Field During the Upland Crop Growing Season in Relation to Cropping Pattern[J]. Journal of Ecology and Rural Environment, 2010, 26(6) |
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| Authors: | HUANG Tai-qing MA Yu-chun XIONG Zheng-qin KONG Xian-wang YU Feng-yi |
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| Affiliation: | HUANG Tai-qing,MA Yu-chun,XIONG Zheng-qin,KONG Xian-wang,YU Feng-yi(College of Resources and Environmental Sciences,Nanjing Agricultural University,Nanjing 210095,China) |
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| Abstract: | A field experiment was conducted to investigate influence of cropping systems on CH4 and N2O emissions from paddy field during the winter upland crop growing season.The experiment was designed to have five treatments,i.e.fallow,oil-seed rape with nitrogen(OR-N) or without nitrogen(OR-ck),wheat with nitrogen(W-N) or without nitrogen(W-ck).Results show that paddy field was obviously an N2O source,and a weak source or sink for CH4 as well during the winter upland crop season.Results also demonstrate that N2O e... |
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| Keywords: | CH4 N2O paddy field upland crop cropping system fallow wheat oil-seed rape integrative global warming potential |
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