生物炭的应用改变了大豆连续作物系统中的土壤代谢物和循环相关的微生物
1Key Laboratory of Biochar and Soil Improvement of Ministry of Agriculture and Rural Affairs, Shenyang Agricultural University, Shenyang 110866, China.
The Science of the total environment
|February 3, 2024
概括
田间老化生物炭的应用显著提高了土壤水平,并改变了大豆田中的土壤代谢物和微生物群落. 这项研究证实了生物炭的存在.
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:
- 生物炭的应用是改善土壤肥沃性的公认方法.
- 现场老化生物炭对大豆作物系统中的土壤代谢物和微生物群落的影响尚不清楚.
研究的目的:
- 研究不同比率的田间老化生物炭对土壤代谢物和循环微生物群落在大豆连续作物系统中的影响.
- 通过代谢学和N周期微生物学阐明大豆生长中的生物炭的调节机制.
主要方法:
- 进行了一项为期五年的现场实地实验,使用不同的生物炭应用速率 (0, 20, 40, 60 t ha-1).
- 使用非向的代谢学和代谢基因组学分析来评估土壤代谢物概况和微生物社区结构.
- 基因和基因组的京都百科全书 (KEGG) 途径分析被用来识别丰富的代谢途径.
主要成果:
- 生物炭的应用显著增加了土壤的总 (TN),可用 (Ava N), (NH4+-N) 和酸盐 (NO3−-N) 含量.
- 生物炭处理导致土壤代谢物概况发生显著变化,观察到许多上调的差异性代谢物.
- 生物炭降低了Nitrospira的丰富性,同时增加了Bradyrhizobium的丰富性,特别是在更高的应用率下,并改变了Nitrospira和土壤特性之间的相关性.
结论:
- 生物炭与肥料的同时应用是提高大豆连续作物系统中的土壤气供应的有效策略,即使是老化的生物炭.
- 生物炭通过改变土壤代谢物和微生物社区结构来影响土壤N代谢.
- 这项研究为生物炭,土壤健康和作物生产率之间的复杂相互作用提供了宝贵的见解.
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