来自缩有机肥的生产,储存和应用的氧化排放
1Norwegian University of Life Sciences, Faculty of Environmental Sciences and Natural Resource Management, Norway; N2 Applied AS, Norway.
The Science of the total environment
|April 14, 2025
概括
有机肥料的用等离子增强丰富提高了效率,但增加了氧化 (N2O) 排放. 控制肥料中的酸盐含量是减轻这些温室气体排放的关键.
科学领域:
- 农业科学 农业科学
- 环境科学 环境科学
- 等离子体化学
背景情况:
- 有机肥料的基于等离子体的丰富提供了提高资源效率和减少温室气体 (GHG) 排放.
- 该过程涉及吸收活性以酸盐和酸盐的形式,降低pH值,并在储存过程中抑制甲 (CH4) 和脱.
- 然而,高反应性含量会增加氧化 (N2O) 形成的风险.
研究的目的:
- 确定生产,储存和田间应用缩有机肥的N2O综合排放因子.
- 评估这种丰富肥料对温室气体排放的整体影响.
- 调查亚酸盐含量与N2O排放之间的关系.
主要方法:
- 电气生成的空气等离子体被用于有机肥的丰富.
- 测量了丰富肥料中的酸盐和酸盐含量.
- 在生产,储存和现场应用过程中量化了氧化 (N2O) 排放量.
- 综合N2O排放因子是使用IPCC Tier 2方法计算的.
主要成果:
- 与未经处理的牛 (1.0%的总N) 相比,富含的有机肥释放的N2O显著更多 (1.8%±0.48%的总N).
- 尽管N2O排放量较高,但总体温室气体减少量估计为72±5.2kgCO2eq/.
- 在化物 (NO2-) 含量和N2O排放之间发现了强烈的相关性,较低的化物减少了45%的排放.
结论:
- 有机肥料的基于等离子体的丰富可以减少整体温室气体排放,但N2O排放必须仔细管理.
- 控制化肥中的化物 (NO2-) 度是减轻N2O排放的可行策略.
- 为可持续的农业实践,建议进一步研究优化缩过程,以尽量减少酸盐的积累.
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