营养物质释放模式和减轻N2O排放在活性家禽便堆肥生物炭与有机资源的应用下
JoungDu Shin1, DongKeon Lee1, ChangKi Shim2
1Bio-technology of Multidisciplinary Sciences, Co., Wanju-gun, Jeollabuk-do, 55315, Republic of Korea.
Environmental pollution (Barking, Essex : 1987)
|May 29, 2024
概括
包括血激活版本在内的家禽便堆肥生物炭有效地减少了土壤中的营养物质和N2O排放. 这些生物炭修正案提供了一种可持续的方法,以加强有机农业实践和营养管理.
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:
- 生物炭被认为具有降低营养物质出和减轻农业系统中氧化 (N2O) 排放的潜力.
- 作为对有机资源的修改,正在探索家禽便堆肥生物炭 (PMCBF) 和血激活家禽便堆肥生物炭 (PAMBF).
- 了解营养释放动态和温室气体 (GHG) 排放对于可持续的土壤管理至关重要.
研究的目的:
- 评估PMCBF和PAMBF对主要植物营养物质释放 (NH4-N,NO3-N,PO4-P,K) 和N2O排放的影响.
- 评估修改后的Hyperbola模型在预测营养物质释放趋势方面的有效性.
- 为生物炭在有机农业战略中的应用提供科学证据.
主要方法:
- 实验设置包括控制 (有机肥料材料),PMCBF和PAMBF在氧化还原条件下的处理.
- 在液中测量了营养物质度 (NH4-N,NO3-N,PO4-P,K).
- 监测了温室气体 (N2O) 排放,并使用修改后的超级波拉模型建模了营养物质的释放.
主要成果:
- 与对照组相比,PMCBF和PAMBF显著减少了累积NH4-N释放量,分别减少了26.2%和15.4%.
- PAMBF显示PO4-P (55.1%) 和K (15.5%) 的释放显著减少.
- 与PMCBF观察到的累计N2O排放量最低 (59.59 mg m-2),与对照组相比减少了23.5%.
结论:
- PMCBF和PAMBF都有效地减轻NH4-N,PO4-P和K的释放,有助于改善营养保留.
- PMCBF显著减少了N2O排放,突出了其在农业中温室气体减排的潜力.
- 修改后的超级波拉模型准确地描述了营养释放模式,支持其用于预测土壤营养动态.
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