酸化生物炭对和在性沙土中的可用性的影响
Tamer A Elbana1, Noura Bakr2, Sahar A Shahin2
1Soils and Water Use Department, Agricultural and Biological Research Institute, National Research Centre, Cairo, Egypt. tamerelbana@yahoo.com.
Scientific reports
|August 20, 2025
概括
酸化生物炭,就像棕树叶和瓜树枝生物炭一样,增强了和在性土壤中的可用性. 酸处理是最有效的,改善营养吸收和土壤肥力.
科学领域:
- 土壤科学 土壤科学
- 农业学是一种农业学.
- 环境化学环境化学
背景情况:
- 生物炭的应用提高了土壤的肥力,特别是在干旱/半干旱地区.
- 性土壤通常具有高pH值,限制了 (P) 和 (K) 的可用性.
- 酸化生物炭可以减轻高pH值,改善营养素的可获得性.
研究的目的:
- 为了评估酸性棕叶 (PF) 和瓜枝 (GB) 生物碳对性沙性土壤中P和K可用性的影响.
- 研究不同酸性处理 (酸,酸) 对生物炭性质和营养物质可用性的影响.
- 确定最佳的生物炭类型,酸化方法和应用率,以改善土壤营养状况.
主要方法:
- 使用性沙土进行受控批次化实验.
- 应用酸性 (乙或酸) 和未酸性PF和GB生物炭在2.4和4.8Mg ha-1.1时.
- 在15周内对生物炭的表征和土壤P和K可用性的分析.
主要成果:
- 与GB生物炭相比,PF生物炭具有更高的阳离子交换能力 (CEC) 和K丰富度.
- 酸显著增加了生物炭CEC;酸的影响最小.
- 4.8 Mg ha−1 酸处理的 GB 生物炭最大化了土壤的 P 可用性 (104.02 mg kg−1),防止固定.
- PF生物炭显著增加了可交换的K,特别是在更高的速度下.
结论:
- 酸化增加了性沙土中P和K的可用性,其效果因生物炭类型和使用的酸而异.
- 酸处理在改善生物炭的CEC和营养物质可用性方面比酸更有效.
- 选择适合生物炭修饰的酸对于优化性土壤中营养的可用性至关重要.
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