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- Title
Effect of Iron Slag Adding on Nitrous Oxide Fluxes of Different Pathways in Paddy Fields.
- Authors
LIN Fang; WANG Chun; WANG Wei-qi; LIN De-hua
- Abstract
Global warming is a critical issue today. The increment of greenhouse gas emission is important cause for the change, nitrous oxide is one of the main greenhouse gas. It is necessary to carry out research on its emission characteristics and reduction methods. In order to clarify the effect of iron slag adding on nitrous oxide fluxes of different pathways in paddy field, the nitrous oxide fluxes of different pathways of control, 2,4, and 8 mg/hm² iron slag application were determined by static chamber gas chromatogram. The results showed; plant pathway nitrous oxide fluxes were -0. 020 4 ~ 0. 033 4, - 0. 038 9 ~ 0. 052 3, - 0. 062 3 ~ 0. 094 4, -0. 035 1 ~0. 080 2 mg/(m² ⋅ h), and the averaged values were 0.005 9, -0.013 9, 0.017 7, -0.000 1 mg/(m² ⋅ h). Diffusion pathway nitrous fluxes were -0.032 3 -0.069 9, - 0. 015 5 ~ 0. 037 2, - 0. 023 1 ~ 0. 067 1, - 0. 035 2 ~ 0. 032 4 mg/(m² ⋅ h), and the averaged values were 0.020 6, -0.003 1, 0.005 3, -0.001 6 mg/(m² ⋅ h). Bubble pathway nitrous oxide fluxes were -0. 073 6 ~ 0. 033 4, - 0. 025 7 ~ 0.084 2, - 0. 045 6 ~ 0. 068 9, -0. 080 1 ~0. 080 2 mg/(m² ⋅ h), and the averaged values were -0.014 7, 0.000 2, 0. 012 5, -0. 011 7 mg/(m² ⋅ h). The effects of iron slag addition on nitrous oxide fluxes of different pathways were different in the same patterns.
- Subjects
IRON slag; NITROUS oxide; GLOBAL warming research; GREENHOUSE gases; GAS chromatography; PADDY fields
- Publication
Research & Exploration in Laboratory, 2014, Vol 33, Issue 8, p26
- ISSN
1006-7167
- Publication type
Article