通过修改生物炭修正案提高土壤健康和使用效率
Juan P Frene1, Nitesh Kasera2, Deb P Jaisi3
1Agricultural Science Center, New Mexico State University, Clovis, NM, 88101, USA.
The Science of the total environment
|October 30, 2025
概括
改性生物炭,特别是铁改性生物炭 (FeB),通过改善土壤健康和营养保留,同时减少损失,显著提高了产量和利用效率 (PUE).
科学领域:
- 农业科学 农业科学
- 土壤科学 土壤科学
- 环境科学 环境科学
背景情况:
- 土壤中低 (P) 溶解度限制了植物的生物可用性,需要高的P应用率.
- 生物炭增强了土壤的营养保留,改造的生物炭显示了进一步改善的潜力.
- 用原始和改性生物炭量化吸收和利用效率 (PUE) 是至关重要的.
研究的目的:
- 研究原始和改性生物炭对土壤健康,产量和P吸收的影响.
- 在不同的生物炭处理下量化工厂P利用效率 (PUE).
- 阐明受生物炭修饰影响的P利用机制.
主要方法:
- (Sorghum bicolor) 在四种治疗方法下生长:无生物炭控制 (CK),原始生物炭 (PrB),铁修饰生物炭 (FeB) 和修饰生物炭 (MgB).
- 测量包括土壤健康指标, Sorghum 生物质和谷物产量,P 吸收和 PUE.
- 进行了液分析,以评估营养保留和可用性.
主要成果:
- 生物炭的应用增加了谷 (10-27%) 和生物质 (5-15%) 的产量,FeB显示了谷物产量增长的最高值.
- 修改后的生物炭 (FeB,MgB) 降低了植物组织中的P度,与对照组相比,PUE增加了61% (FeB) 和34% (MgB).
- FeB和MgB增强了液酸盐的可用性,并保留了更多的P,S和Cu,而MgB改善了光合作用,FeB影响了土壤的pH值和营养素的可用性.
结论:
- 修改后的生物炭修正案显著提高了农作物产量和种植中的PUE.
- FeB和MgB改善了土壤特性和营养动态,减轻了P出,提高了农业可持续性.
- 生物炭改造通过优化营养使用和作物生产率,为可持续农业提供了一个有希望的战略.
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