Effects of urease and nitrification inhibitors on nitrous oxide emissions and nitrifying/denitrifying microbial communities in a rainfed maize soil: A 6-year field observation
文献类型：期刊论文
| 作者 | Dong, Dan2,3,4; Kou, Yongping5; Yang, Weichao1,2; Chen, Guanxiong2; Xu, Hui1,2 |
| 刊名 | SOIL & TILLAGE RESEARCH
 |
| 出版日期 | 2018-08-01 |
| 卷号 | 180期号:2018页码:82-90 |
| 关键词 | Precipitation DCD Ammonia oxidizing bacteria |
| ISSN号 | 0167-1987 |
| DOI | 10.1016/j.still.2018.02.010 |
| 产权排序 | 4 |
| 文献子类 | Article |
| 英文摘要 | Application of the inhibitor-amended nitrogen fertilizers is a recommended method for reducing agricultural nitrous oxide (N2O) emission. However, the potential impacts of these inhibitors on soil environments still needs to be evaluated using long-term experiments. Through a 6-year field observation, the effects of combined application of a nitrification inhibitor (dicyandiamide, DCD) and a urease inhibitor (hydroquinone, HQ) on N2O emission, as well as soil ammonia oxidizers and denitrifiers in a maize (Zea mays L.) field in Northeast China were investigated. The results showed that annual soil N2O emissions were 0.466, 1.021 and 0.874 kg N2O-N ha(-1) for N0 fertilizer treatment (CK), Urea treatment (U) and Urea + DCD + HQ treatment (UDH), respectively. A significant linear correlation was found between the N2O accumulation in the first month after fertilizer application and the short-term precipitation (i.e., a period from 10 days before to 20 days after fertilizer application). The N2O emissions in the freeze-thaw period accounted for up to 42.5% of the year-round N2O emissions. The remarkable fluctuations of annual N2O emissions were observed (their coefficients of variation were 68.3%, 77.7% and 71.2% for CK, U and UDH treatments, respectively); these fluctuations were mainly attributed to the precipitation. The averaged N2O emission factors (EF) (0.308% and 0.227% for U and UDH treatments, respectively) were far less than the default mean EF of 1% proposed by (IPCC, 2006). An averaged N2O mitigation of 26.4% was fulfilled by UDH application. The results of quantitative PCR for soil nitrification and denitrification gene copy numbers measurement showed that UDH treatment significantly decreased the ammonia oxidation bacteria (AOB) amoA gene copy numbers by 74% on the 10th day after UDH application. No significant effects of combined application of DCD and HQ on microbial denitrification functional gene abundance were observed. |
| 学科主题 | Agriculture ; Agronomy |
| URL标识 | 查看原文 |
| WOS关键词 | AMMONIA-OXIDIZING BACTERIA ; NORTH CHINA PLAIN ; 3,4-DIMETHYLPYRAZOLE PHOSPHATE DMPP ; GRAZED PASTURE SOIL ; CULTIVATED BLACK SOIL ; DICYANDIAMIDE DCD ; WHEAT ROTATION ; N2O EMISSIONS ; CROPPING SYSTEM ; DENITRIFYING BACTERIA |
| WOS研究方向 | Agriculture |
| 语种 | 英语 |
| WOS记录号 | WOS:000433653300009 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://210.75.237.14/handle/351003/30197]  |
| 专题 | 环境治理与食品安全领域_应用与环境微生物研究 环境治理与食品安全领域_环境微生物四川省重点实验室 环境治理与食品安全领域_中国科学院环境与应用微生物重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Appl Ecol, Key Lab Pollut Ecol & Environm Engn, Shenyang 110016, Liaoning, Peoples R China 2.Chinese Acad Sci, Inst Appl Ecol, Shenyang 110016, Liaoning, Peoples R China; 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China; 4.Natl Field Observat & Res Stn Shenyang Agroecosys, Shenyang 110016, Liaoning, Peoples R China; 5.Chinese Acad Sci, Chengdu Inst Biol, Environm Microbiol Key Lab Sichuan Prov, Key Lab Environm & Appl Microbiol, Chengdu 610041, Sichuan, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Dong, Dan,Kou, Yongping,Yang, Weichao,et al. Effects of urease and nitrification inhibitors on nitrous oxide emissions and nitrifying/denitrifying microbial communities in a rainfed maize soil: A 6-year field observation[J]. SOIL & TILLAGE RESEARCH,2018,180(2018):82-90. |
| APA | Dong, Dan,Kou, Yongping,Yang, Weichao,Chen, Guanxiong,&Xu, Hui.(2018).Effects of urease and nitrification inhibitors on nitrous oxide emissions and nitrifying/denitrifying microbial communities in a rainfed maize soil: A 6-year field observation.SOIL & TILLAGE RESEARCH,180(2018),82-90. |
| MLA | Dong, Dan,et al."Effects of urease and nitrification inhibitors on nitrous oxide emissions and nitrifying/denitrifying microbial communities in a rainfed maize soil: A 6-year field observation".SOIL & TILLAGE RESEARCH 180.2018(2018):82-90. |
入库方式： OAI收割
来源：成都生物研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。