化抑制剂DCD和DMPP对成熟度的影响,在肥堆肥过程中N2O和NH3的排放
Xinyuan Ma1, Haobo Bai2, Guoxue Li2
1State Key Laboratory of Aridland Crop Science, College of Agronomy, Gansu Agricultural University, Lanzhou, 730070, China.
化抑制剂二甲胺 (DCD) 和3,4-二甲基酸盐 (DMPP) 在堆肥过程中减少了氨和氧化排放. 在不影响成熟度的情况下,DMPP显著减少了氧化排放和增加了堆肥含量.
科学领域:
- 农业科学 农业科学
- 环境科学 环境科学
- 土壤科学 土壤科学
背景情况:
- 农业废物堆肥对于营养回收至关重要.
- 在堆肥过程中排放的氧化 (N2O) 和氨 (NH3) 有助于温室气体排放和营养损失.
- 化抑制剂 (NI) 正在探索减轻这些排放.
研究的目的:
- 评估二甲胺 (DCD) 和3,4-二甲基酸盐 (DMPP) 对堆肥成熟度,N2O和NH3排放的影响.
- 评估在堆肥过程中不断增加NI的有效性.
- 了解NI应用与气体排放之间的关系.
主要方法:
- 用增量 DCD 和 DMPP 应用堆肥猪和玉米.
- 使用种子发芽指数 (GI) 监测堆肥成熟度.
- 在整个堆肥过程中量化N2O和NH3排放.
主要成果:
- DCD和DMPP并没有对堆肥成熟度产生负面影响 (GI 80.76%-97.06%).
- 早期的NI应用减少了NH3排放量8.85% (DCD) 和12.83% (DMPP).
- DMPP减少了54.50%的累计N2O排放量,并延迟了N2O峰值;N2O来源于亚酸盐和酸盐的脱化.
结论:
- 化抑制剂 (DCD和DMPP) 可以有效地减少堆肥过程中的NH3和N2O排放.
- 在减少N2O排放和改善最终堆肥含量方面,DMPP显示出更高的有效性.
- 这些发现支持使用NI用于低碳农业废物管理.
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