农业环境科学学报2016，Vol.35Issue(4)：801-807,7.DOI:10.11654/jaes.2016.04.026
生物炭对棕壤NH3挥发、N2O排放及氮肥利用效率的影响
Effects of biochar on NH3 volatilization,N2O emission and nitrogen fertilizer use efficiency in brown soil
摘要
Abstract
A field experiment was conducted to investigate the effects of biochar on NH3 volatilization,N2O emission, and N fertilizer use effi-ciency in brown soil by acid absorption and static chamber method. Four treatments, including no N fertilizer(CK), N fertilizer(NB0), N fertilizer with 20 t·hm-2 biochar(NB20)and N fertilizer with 40 t·hm-2 biochar(NB40), were designed. Results showed that:Compared with NB0, NH3 volatilization in NB20 and NB40 decreased by 24.07%and 37.62%, respectively, while N2O emission in these two treatments re-duced by 21.67%and 19.57%, with no significant difference between them;Soil bulk density was decreased, but soil pH, total nitrogen and organic carbon content were increased in NB20 and NB40;A significant positive correlation existed between NH3 volatilization and soil bulk density or ammonium nitrogen concentration, and between N2O emission and soil bulk density, whereas a negative correlation between NH3 volatilization and organic carbon content, and between N2O emission and nitrate-nitrogen concentration or organic carbon content; NB20 increased N fertilizer use efficiency and maize yield by 6.07%, while NB40 decreased the yield by 13.88%, as compared with NB0.关键词
生物炭/NH3挥发/N2O排放/氮肥利用效率Key words
biochar/NH3 volatilization/N2O emission/N fertilizer use efficiency分类
资源环境引用本文复制引用
程效义,刘晓琳,孟军,兰宇,刘遵奇,杨旭,黄玉威,曹婷,陈温福..生物炭对棕壤NH3挥发、N2O排放及氮肥利用效率的影响[J].农业环境科学学报,2016,35(4):801-807,7.基金项目
科技支撑课题“年产3万吨生物质炭基材料技术研究与产业化示范”（2014BAD02B06-02）；公益性行业（农业）科技专项“秸秆移动床热解炭化多联产关键技术研究与示范”；辽宁省教育厅优秀人才支持计划 （）
