Your browser doesn't support javascript.
loading
Biochar-enriched soil mitigated N2O and NO emissions similarly as fresh biochar for wheat production.
Wu, Zhen; Zhang, Qianqian; Zhang, Xi; Duan, Pengpeng; Yan, Xiaoyuan; Xiong, Zhengqin.
Afiliación
  • Wu Z; Jiangsu Key Laboratory of Low Carbon Agriculture and GHGs Mitigation, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China.
  • Zhang Q; Jiangsu Key Laboratory of Low Carbon Agriculture and GHGs Mitigation, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China.
  • Zhang X; Jiangsu Key Laboratory of Low Carbon Agriculture and GHGs Mitigation, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China.
  • Duan P; Jiangsu Key Laboratory of Low Carbon Agriculture and GHGs Mitigation, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China.
  • Yan X; State Key Lab of Soil and Sustainable Agriculture, Institute of Soil Sciences, Chinese Academy of Sciences, Nanjing 210008, China.
  • Xiong Z; Jiangsu Key Laboratory of Low Carbon Agriculture and GHGs Mitigation, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China. Electronic address: zqxiong@njau.edu.cn.
Sci Total Environ ; 701: 134943, 2020 Jan 20.
Article en En | MEDLINE | ID: mdl-31731203
Biochar amendment has been recommended as a potential strategy to mitigate nitrous oxide (N2O) and nitric oxide (NO) emissions for wheat production, but its mechanism and effective duration are not well understood. The 1-octyne and 2-pheny l-4,4,5,5-tetramethylimidazoline-1-oxyl 3-oxide (PTIO) in combination with potassium chlorate were used to evaluate the relative contribution of ammonia-oxidizing bacteria (AOB) and archaea (AOA) to potential ammonia oxidation (PAO) and N2O and NO production as affected by biochar. Acidic and alkaline soils were collected during wheat-growing season, and four treatments were installed in each soil type: CK, urea alone; BE, biochar-enriched soil for 2-6 years; FB, fresh biochar added to CK; and AB, aged biochar added to CK. The results showed that octyne and PTIO efficiently assessed AOB and AOA activities in soil incubation. The AOB-driven PAO in acidic soil was largely enhanced by increased soil pH in BE and FB treatments, whereas AOA-driven PAO was not. And the contribution of AOB to PAO exceeded 80% in alkaline soil. The N2O and NO production were positively correlated with PAO in both soils. BE treatment decreased the direct N2O and NO production in alkaline soil, while both BE and FB treatments decreased the N2O and NO yields in acidic soil, indicating that biochar mitigated soil N2O and NO emissions for wheat production. The lack of differences between AB and CK treatments indicated that aged biochar lost its initial effects on PAO, while the biochar-enriched soil amended with biochar years earlier still functioned similarly as fresh biochar.
Asunto(s)
Palabras clave
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Triticum / Carbón Orgánico / Agricultura / Contaminación del Aire / Óxido Nítrico / Dióxido de Nitrógeno Idioma: En Revista: Sci Total Environ Año: 2020 Tipo del documento: Article País de afiliación: China Pais de publicación: Países Bajos
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Triticum / Carbón Orgánico / Agricultura / Contaminación del Aire / Óxido Nítrico / Dióxido de Nitrógeno Idioma: En Revista: Sci Total Environ Año: 2020 Tipo del documento: Article País de afiliación: China Pais de publicación: Países Bajos