利用响应表面方法和可取性函数,优化用骨炭和骨灰修改的石灰土壤中释放的
Yasser A El-Damarawy1, Eman M Saleh2, Omar M Ibrahim3
1Soils and Water Use Department, National Research Centre, Cairo, Egypt.
Scientific reports
|August 18, 2025
概括
骨灰 (BA) 和骨炭 (BC) 显著提高石灰土壤中 (P) 的可用性,特别是当用酸化水 (AW) 处理时. 这些环保肥料为传统酸盐来源提供了可持续的替代品.
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:
- (P) 是植物生长的关键营养素,但其在石灰质土壤中的可用性通常是有限的.
- 骨灰 (BA) 和骨炭 (BC) 是P的潜在环保来源,但它们的释放动态需要优化.
- 了解来自替代来源的P释放对于可持续农业和减少对合成肥料的依赖至关重要.
研究的目的:
- 与岩 (PR) 和单一超 (SSP) 相比,优化石灰土中骨灰 (BA) 和骨炭 (BC) 中的释放.
- 评估不同含量 (PL) 和化时间对P可用性和可溶性的影响.
- 调查蒸水 (DW) 和酸化水 (AW) 对P释放和土壤特性的影响.
主要方法:
- 中央复合设计和可取性功能用于优化.
- 在30°C的化实验中,使用不同的PL (1000-4000 mg P/kg) 和化时间 (14-90天).
- 使用DW和AW的湿化和干燥周期,监测可用P,可溶P,Ca2+,Mg2+和土壤pH.
主要成果:
- 的可用性和可溶性随着更高的PL和更长的潜伏时间显著增加.
- 酸化水 (AW) 比蒸水 (DW) 更有效地增强P释放和相关参数,同时降低土壤pH值.
- 骨灰 (BA) 与骨炭 (BC) 和岩 (PR) 相比,对可用和可溶性P表现最佳,特别是在AW应用时.
结论:
- 酸性水 (AW),模拟根球酸化,显著优化了从石灰质土壤中BA和BC释放的P.
- 骨灰 (BA) 和骨炭 (BC) 作为有效的,环保的酸盐肥料,提高了土壤的肥力和可持续性.
- 对于这些发现的农业大规模应用,需要进一步的研究.
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