DOI: 10.1016/j.atmosenv.2020.117571
论文题名: Effect of tropical grass and nitrogen fertilization on nitrous oxide, methane, and ammonia emissions of maize-based rotation systems
作者: Grassmann C.S. ; Mariano E. ; Rocha K.F. ; Gilli B.R. ; Rosolem C.A.
刊名: Atmospheric Environment
ISSN: 1352-2310
出版年: 2020
卷: 234 语种: 英语
英文关键词: Ammonia
; Gas emissions
; Grain (agricultural product)
; Methane
; Nitrification
; Nitrogen fertilizers
; Nitrogen oxides
; Rotation
; Soils
; Tropics
; Ammonia emissions
; Field experiment
; Greenhouse gas (GHG)
; Maize (Zea mays L.)
; Maize growing season
; Nitrogen fertilization
; Soil nitrifiers
; Southeastern Brazil
; Greenhouse gases
; ammonia
; crop rotation
; fertilizer application
; forage
; grass
; greenhouse gas
; maize
; methane
; nitrification
; nitrogen
; nitrous oxide
; tropical region
; Brazil
; Brachiaria
; Nia
; Panicum
; Panicum maximum
; Poaceae
; Urochloa brizantha
; Urochloa ruziziensis
; Zea mays
学科: Brachiaria
; Nitrogen fertilizer
; Nitrogen losses
; Panicum
; Zea mays L.
中文摘要: While tropical grasses were shown to inhibit the activity of soil nitrifiers, their role in greenhouse gas (GHG) and ammonia (NH3) emissions in N fertilized maize-based rotations are poorly understood. A 3-year (2014–2017) field experiment was conducted in southeastern Brazil to assess the influence of forage grass and N fertilization on nitrous oxide (N2O), methane (CH4), and NH3 emissions from maize (Zea mays L.)-grass rotations. Guinea grass (Megathyrsus maximus cv. Tanzânia), palisade grass (Urochloa brizantha cv. Marandu), and ruzigrass (Urochloa ruziziensis cv. Comum) were grown in the main plots, while an unfertilized control and 140 kg N ha−1 were applied annually to maize in sub-plots. No apparent nitrification suppression by the grasses was detected. N2O fluxes increased following N fertilizer addition in maize, particularly in the second season, where slightly higher cumulative N2O emission was observed with N fertilization in comparison with the control. CH4 fluxes showed high variation in the first forage and maize growing seasons. Residual N fertilizer decreased soil CH4 uptake of palisade grass and ruzigrass compared with unfertilized palisade grass in the second forage season. Cumulative NH3 emissions were unaffected by forage species and N fertilization. However, in both maize seasons, yield-scaled NH3 emission was the lowest following N addition. Throughout the seasons, the differences between the three grasses in N2O, CH4, and NH3 emissions were minimal. We conclude that the tropical perennial grasses rotated with maize were similar regarding GHG and NH3 emissions, while N fertilization slightly increased N2O emission and decreased soil CH4 uptake. © 2020 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/160269
Appears in Collections: 气候变化与战略
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作者单位: College of Agricultural Sciences, São Paulo State University, Av. Universitária, 3780, Altos do Paraíso, CEP 18610-034, Botucatu, SP, Brazil
Recommended Citation:
Grassmann C.S.,Mariano E.,Rocha K.F.,et al. Effect of tropical grass and nitrogen fertilization on nitrous oxide, methane, and ammonia emissions of maize-based rotation systems[J]. Atmospheric Environment,2020-01-01,234