郑智旗,王树东,何 进,王庆杰,李洪文,张祥彩.耕作措施对京郊冬小麦农田CO2、CH4排放通量的影响[J].农业机械学报,2014,45(S1):189-195.
Zheng Zhiqi,Wang Shudong,He Jin,Wang Qingjie,Li Hongwen,Zhang Xiangcai.Influences of Tillage Methods on Carbon Dioxide and Methane Fluxes from Winter Wheat Fields in Beijing’s Suburb[J].Transactions of the Chinese Society for Agricultural Machinery,2014,45(S1):189-195.
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耕作措施对京郊冬小麦农田CO2、CH4排放通量的影响   [下载全文]
Influences of Tillage Methods on Carbon Dioxide and Methane Fluxes from Winter Wheat Fields in Beijing’s Suburb   [Download Pdf][in English]
投稿时间:2014-06-11  
DOI:10.6041/j.issn.1000-1298.2014.S0.030
中文关键词:  小麦 耕作措施 京郊 CO2 CH4 通量
基金项目:教育部创新团队发展计划资助项目(IRT13039)
作者单位
郑智旗 中国农业大学 
王树东 中国农业大学 
何 进 中国农业大学 
王庆杰 中国农业大学 
李洪文 中国农业大学 
张祥彩 中国农业大学 
中文摘要:通过设置在北京市大兴区青云店镇的不同耕作措施试验,利用静态箱-气相色谱法对2季冬小麦(2011年10月—2012年7月和2012年10月—2013年7月)各关键生育期内CO2、CH4的排放通量进行了测定。结果表明:免耕(NT)、深松(ST)、旋耕(RT)、传统耕作(CT)4种耕作措施下,冬小麦农田土壤总体表现为CO2源和CH4汇的功能,且CO2和CH4都有明显的日变化和季节变化特征。CO2日排放通量最高峰出现在0:00,最低峰出现在10:00;CO2季节排放通量最高峰出现在冬小麦播种期和收获期,最低峰出现在越冬期。CH4日排放和季节排放通量变化特征差异显著,但没有明显的变化规律。CO2排放通量与0~20cm各土层土壤温度呈正相关,与0~30cm各土层土壤质量含水率呈负相关关系。CH4排放通量与0~20cm各土层土壤温度呈正相关关系。4种耕作处理下,冬小麦农田CO2的季节平均排放通量为:传统耕作>旋耕>深松>免耕,CH4的季节平均吸收通量为:旋耕>传统耕作>免耕>深松。免耕相对于旋耕和传统耕作农田CO2季节平均排放通量降低了23.3%~27.1%;旋耕、传统耕作相对于免耕和深松CH4的季节平均吸收量增加了20%以上。因此,在京郊冬小麦农田,4种耕作措施(NT、ST、RT和CT)均能不同程度地增加CH4的吸收量,同时,采用免耕能进一步降低农田CO2排放量。
Zheng Zhiqi  Wang Shudong  He Jin  Wang Qingjie  Li Hongwen  Zhang Xiangcai
China Agricultural University;China Agricultural University;China Agricultural University;China Agricultural University;China Agricultural University;China Agricultural University
Key Words:Wheat Tillage method Beijing’s suburb CO2 CH4 Flux
Abstract:To determine the variation of tillage on carbon dioxide (CO2) and methane (CH4) fluxes from winter wheat fields in Beijing’s suburb, different tillage methods were experimented in Qingyundian Town, Daxing District, Beijing. CO2, CH4 fluxes were measured using static chamber-gas chromatographic techniques during two seasons of winter wheat (October 2011-July 2012 and October 2012-July 2013). The experimental results of the four tillage methods, i.e., no tillage (NT), subsoiling tillage (ST), rotary tillage (RT) and conventional tillage (CT) showed that soils with winter wheat were the emission sources of atmospheric CO2, and the sink of atmospheric CH4 during crop growth seasons. Daily and seasonal variation of CO2 and CH4 fluxes changed significantly for NT, ST, RT and CT treatments, respectively. The maximal daily emission flux of CO2 appeared at 0:00 am, and the minimum emission appeared at 10:00 am. The maximal seasonal emission flux of CO2 appeared at seedling and maturing stages of winter wheat and the minimum emission appeared at winter dormancy stage. Daily and seasonal variation of CH4 fluxes under four tillage treatments showed a significant difference, but no significant variety regulation. The seasonal CO2 flux positively correlated with soil temperature in 0~20cm soil layer, while negative correlation was found between the CO2 emission and soil moisture in 0~30cm soil layer. The seasonal CH4 flux positively correlated with soil temperature in 0~20cm soil layer. In winter wheat fields, the seasonal mean CO2 emission flux demonstrated as CT>RT>ST>NT, and the seasonal mean CH4 absorption flux demonstrated as RT>CT>NT>ST. Compared with RT and CT, NT decreased soil CO2 emission flux by 23.3%~27.1%, and increased soil CH4 absorption flux by over 20%. Generally, all the four treatments (NT, ST, RT and CT) enhanced CH4 assimilation at different levels, and no tillage would be a better tillage practice to reduce CO2 emission for winter wheat fields in Beijing’s suburb.

Transactions of the Chinese Society for Agriculture Machinery (CSAM), in charged of China Association for Science and Technology (CAST), sponsored by CSAM and Chinese Academy of Agricultural Mechanization Science(CAAMS), started publication in 1957. It is the earliest interdisciplinary journal in Chinese which combines agricultural and engineering. It always closely grasps the development direction of agriculture engineering disciplines and the published papers represent the highest academic level of agriculture engineering in China. Currently, nearly 8,000 papers have been already published. There are around 3,000 papers contributed to the journal each year, but only around 600 of them will be accepted. Transactions of CSAM focuses on a wide range of agricultural machinery, irrigation, electronics, robotics, agro-products engineering, biological energy, agricultural structures and environment and more. Subjects in Transactions of the CSAM have been embodied by many internationally well-known index systems, such as: EI Compendex, CA, CSA, etc.

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