协同作用的Bacillus-木质泥炭生物堆肥增强了溶解的有机物转化和黄瓜的生长
Jiyu Xie1, Yi Ren2, Taimeng Tan1
1Jiangsu Provincial Key Lab for Solid Organic Waste Utilization, Key Lab of Organic-based Fertilizers of China, Jiangsu Collaborative Innovation Center for Solid Organic Wastes, Educational Ministry Engineering Center of Resource-saving Fertilizers, Nanjing Agricultural University, Nanjing 210095, PR China.
Bioresource technology
|December 16, 2025
概括
使用Bacillus velezensis SQR9进行木质泥炭的生物堆肥增强了土壤修改特性. 这种由PGPR介导的过程促进了植物的生长,并产生了富含酸和有益微生物的生物肥料.
科学领域:
- 农业科学 农业科学
- 微生物学 微生物学
- 土壤科学 土壤科学
背景情况:
- 木质泥炭是一种有价值的土壤补充剂,但生物处理方法尚不发达.
- 目前的改进依赖于物理和化学方法,限制了可持续利用.
研究的目的:
- 通过促进植物生长的草原细菌 (PGPR) 调解木质泥炭的生物堆肥.
- 评估PGPR处理的木质泥炭对植物生长和土壤特性的影响.
- 描述堆肥过程中溶解有机物和微生物群体的变化.
主要方法:
- 使用Bacillus velezensis SQR9.9对木质泥炭进行堆肥.
- 用堆肥木质泥炭进行黄瓜植物生长实验.
- 对土壤属性的分析,包括溶解的有机碳和酸含量.
- 里叶变换离子循环子共振质谱 (FT-ICR MS) 用于溶解有机物分析.
- 使用网络分析进行微生物社区分析.
主要成果:
- 堆肥木质泥炭显著增加了黄瓜的生物质和高度 (27-37%).
- 溶解的有机碳增加了18.9倍,湿酸含量增加了3.7倍.
- 细菌的相对丰度显著增加,51.67%的初始DOM分解成更多的生物可用化合物.
- 堆肥中的有益物质,而不是PGPR本身,被确定为促进植物生长的主要驱动因素.
结论:
- 以PGPR为媒介的生物堆肥是一种有效的方法,可以将木质泥炭升级为生物肥料.
- 堆肥增强土壤特性,并通过有益物质和酸丰富促进植物生长.
- 这种方法为农业中木质泥炭利用提供了可持续的途径.
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