生物炭堆肥促进了六价的减少,改善了土壤质量和微生物社区结构
Guangpeng Pei1, Jiarui Cao1, Zhenye Tong1
1College of Resources and Environment, Shanxi Agricultural University/Key Laboratory of Sustainable Dryland Agriculture of Shanxi Province, Taigu, 030801, China.
Journal of environmental management
|August 3, 2025
概括
生物炭堆肥通过减少Cr (VI) 和改善土壤质量,有效地修复受污染的土壤. 微粒大小的生物炭堆肥在Cr (VI) 减少和增强微生物群落方面表现出最高的效率.
科学领域:
- 环境科学 环境科学
- 土壤科学 土壤科学
- 微生物学 微生物学
背景情况:
- 生物炭堆肥 (BCing) 在农业中越来越多地使用.
- 它在修复污染土壤中的作用尚未得到充分研究.
研究的目的:
- 评估使用不同生物炭颗粒大小的BCing对Cr (VI) 减少的影响.
- 评估土壤质量和微生物社区结构的变化.
主要方法:
- 三种处理方法:堆肥 (C),大颗粒生物炭堆肥 (LBCing) 和小颗粒生物炭堆肥 (SBCing).
- 应用于1%和5%的Cr污染的土壤.
- 分析了Cr (VI) 减少,土壤特性和微生物群落结构.
主要成果:
- 所有处理都显著降低了土壤中的Cr6含量,其中5%的SBCing显示出最高的效率 (94.94%).
- 水溶性和浸出Cr减少,而Cr的分化转向更稳定的分数.
- 土壤有机物和电导率增加;氧化还原潜力下降.
- 5%的应用率增强了细菌多样性,重塑了微生物群落.
结论:
- BCing是一种可持续的策略,用于修复Cr污染土壤.
- 在Cr (VI) 减少和土壤改善方面,SBC证明了卓越的性能.
- 土壤微生物群落结构受到Cr (VI) 水平和BCing处理的显著影响.
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