干旱地区农业研究2011，Vol.29Issue(3)：112-117,6.
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
摘要
Abstract
Greenhouse gas emissions (CO2, C-H4 and N2O) under 5 treatments, including conventional tillage, notillage with low stubble and low mulch, no-tillage with high stubble and low mulch, no-tillage with low stubble and high mulch, and no-tillage with high stubble and high mulch, were determined 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 absorption. 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-tillage with high stubble and low mulch, notillage with low stubble and high mulch, and no-tillage with high stubble and high mulch. N2O and CO2 presented an opposite 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 incrreased. But more studies are still warranted to investigate the long-term effects of the different treatments on greenhouse gas emissions.关键词
燕麦/耕作方式/温室气体排放/旱作/农牧交错区Key words
oat/ tillage system/ greenhouse gas emission/ dryland farming/ farming-pastoral zone分类
农业科技引用本文复制引用
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):112-117,6.基金项目
国家自然科学基金(30860135) （30860135）
国家科技支撑重点课题(2006BAD15B05) （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) （nycytx-14）
