在试点规模的奶肥中使用石膏减少甲排放
Emma Tomalty1, Mélodie Laniel1, Vyncent Leblanc1
1Agriculture and Agri-Food Canada, Science and Technology Branch, Ottawa, Ontario, Canada.
Journal of environmental quality
|December 28, 2025
概括
将石膏粉添加到牛中可以显著减少甲排放,甲是加拿大畜牧设施的主要温室气体. 这项研究表明,石膏是一种有效的策略,可以减轻堆肥储存的排放.
科学领域:
- 农业科学 农业科学
- 环境科学 环境科学
- 气候变化缓解缓解 气候变化缓解
背景情况:
- 动物便储存设施是温室气体 (GHG) 的重要来源,主要是甲 (CH4) 和氧化 (N2O).
- 减少这些排放对于加拿大的气候变化缓解努力至关重要.
研究的目的:
- 评估将石膏粉添加到牛的效果,以减少甲和氧化物排放.
- 确定石膏的最佳应用率作为温室气体减排战略.
主要方法:
- 试点规模的研究使用乳制品的重复 (∼10,000 L) 与三个石膏率:低 (3.2 g L-1),高 (7.1 g L-1),和控制 (0 g L-1).
- 气体样本 (CH4和N2O) 在143天内从稳定状态室中采集,使用气体染色学.
- 累计排放量计算和比较跨处理.
主要成果:
- 与对照组相比,低和高比例的石膏都显著减少了累积的甲排放量.
- 甲排放的减少是显著的:低速率为87%,高速率为92%.
- 虽然氧化排放显示出石膏的减少趋势,但由于排放水平较低,这一趋势在统计上并不显著.
结论:
- 石膏添加剂是一种安全有效的策略,用于减轻储存中的动物渣泥产生的温室气体排放.
- 需要进一步的研究来确定农场应用率和评估经济可行性.
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