张志栋,刘景辉,YU Qing,王润莲,王永强,崔凤娟.旱作燕麦不同耕作方式对土壤温室气体排放的影响[J].干旱地区农业研究,2011,29(3):112~117
旱作燕麦不同耕作方式对土壤温室气体排放的影响
Effects of oat tillage systems on greenhouse gas emissions in dry land
  
DOI：10.7606/j.issn.1000-7601.2011.03.21
中文关键词:  燕麦  耕作方式  温室气体排放  旱作  农牧交错区
英文关键词:oat  tillage system  greenhouse gas emission  dryland farming  famming pastoral zone
基金项目:国家自然科学基金(30860135)；国家科技支撑重点课题(2006BAD15B05)；内蒙古农业大学创新团队； 现代农业产业技术体系建设专项资金(nycytx-14)
作者单位
张志栋 Inner Mongolia Agricultural Uniwersity，Hohhot, Inner Mongolia 010018, China 
刘景辉 Inner Mongolia Agricultural Uniwersity，Hohhot, Inner Mongolia 010018, China 
YU Qing East Cereal and Oilseed Research Centre，Agriculture and Agri Food Canada, Ottawva K1A 0C6，Canada 
王润莲 Inner Mongolia Agricultural Uniwersity，Hohhot, Inner Mongolia 010018, China 
王永强 Inner Mongolia Agricultural Uniwersity，Hohhot, Inner Mongolia 010018, China 
崔凤娟 Inner Mongolia Agricultural Uniwersity，Hohhot, Inner Mongolia 010018, China 
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中文摘要:
      采用静态箱法测定了常规耕作、免耕留低茬低覆盖、免耕留高茬低覆盖、免耕留低茬高覆盖和免耕留高茬高覆盖5个处理条件下燕麦播种前、生育过程中和收割后土壤CO2、CH4和N2O的排放通量。结果表明:CO2排放通量呈单峰曲线变化,峰值出现在苗期;CH4排放通量多为负值,表现为"吸收",季节性变化不明显;N2O排放规律性不明显。处理间相比,CO2排放通量和CH4吸收通量从大到小依次为常规耕作、免耕留低茬低覆盖、免耕留高茬低覆盖、免耕留低茬高覆盖和免耕留高茬高覆盖;N2O与CO2的排放趋势相反;温室气体综合排放效应与CO2趋势一致。免耕留茬秸秆覆盖减少了CO2排放和CH4吸收,增加了N2O排放,温室气体综合排放效应降低,有利于温室气体减排,但不同处理温室气体排放的长期效应还有待研究。
英文摘要:
      Greenhouse gas emissions (CO2, CH4 and N2O) under 5 treatments, including conventional tillage, no-tillage with low stubble and low mulch，no tllage with high stubble and low mulch, no tillage with low stubble and high mulch，and no tlagle with high stubble and high mulch, were detemined using static gas cases on oat production field before seed sowing， during growth，and after harvest. The results showed:CO2 emission fluxes followed a single peak curve，and the peak appeared at the seedling stage. CH4 fluxes were mostly negative, indicating there was a net absorp-tion. Unobvious trend was observed for N2O emission. Of all the 5 treatments, CH4 and CO2 fluxes were descended in an order of conventional tillage， no-tillage with low stubble and low mulch，no tllge with high stubble and low mulch，no-tillgle with low stubble and high mulch，and no tllage with high stubble and high mulch. N2O and CO2 presented an op-posite trend in emission. The integrated emission effects of greenhouse gases were similar to CO2. Coverage with stubbles under no tillage reduced CO2 emission and CH4 absorption, increased N2O emissions，and greenhouse gas emissions were also increased. But more studies are still warranted to investigate the long tem effects of the different treatments on greenhouse gas emissions.
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