与石灰一起应用的生物炭通过对土的微生物和酶调节来提高土壤的可用性
Yang Zhang1, Caidi Yang1,2,3, Jun Wang1,2
1Shaanxi Key Laboratory of Earth Surface System and Environmental Carrying Capacity, College of Urban and Environmental Science, Northwest University, Xi'an 710127, China.
Microorganisms
|March 27, 2025
概括
将生物炭和石灰添加到土壤中,通过优化微生物群落和酶活性,大大提高了的可用性. 有石灰的生物炭在提高土壤和大米产量方面表现出卓越的结果.
科学领域:
- 土壤科学 土壤科学
- 微生物学 微生物学
- 生物地质化学生物地质化学
背景情况:
- 土壤微生物对于 (P) 的可用性至关重要.
- 对于生物炭和石灰如何影响微生物群落和P可用性机制的理解有限.
- 研究这些相互作用对于可持续农业和土壤健康至关重要.
研究的目的:
- 探索生物炭和石灰在提高土壤P可用性的生物化学机制.
- 分析土壤微生物社区结构和P功能基因的变化.
- 为了比较不同类型的生物炭及其与石灰相结合的影响.
主要方法:
- 将三种生物炭类型 (米,木,猪) 单独和加应用于田土壤.
- 高通量测序和实时PCR分析微生物群落和P功能基因.
- 测量可用的P,无机P分数和酸酶活性.
主要成果:
- 生物炭的应用,特别是用石灰,显著增加了可用的和无机P (Olsen-P,Al-P,Fe-P,Ca-P).
- 生物炭和石灰的同时应用增强了性胺酶,胺酶和无机酸酶的活动.
- 生物炭增加了phoD,gcd和pqqC基因的丰富性,与P可用性正相关,并改变了微生物社区结构,有利于P-溶解细菌.
结论:
- 优化的微生物社区结构,由生物炭和石灰驱动,增强酸酶活性和P的可用性.
- 在这个过程中,phoD基因和营养素的增加可用性起着关键作用.
- 与石灰相结合的生物炭在改善土壤P可用性和大米产量方面比单独的生物炭更有效.
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