[不同生物炭和有效微生物剂改进方法对营养物质释放特征和堆肥潜力的影响]
Pei-Yin Jia1,2, Xin Wang1,2, Yu-Ting Hua1,2
1College of Environmental Science and Engineering, Qingdao University, Qingdao 266071, China.
Huan jing ke xue= Huanjing kexue
|September 12, 2023
概括
将玉米生物炭 (CSB) 和有效微生物剂 (EM) 与城市污水污泥堆肥相结合,可显著提高沿海湿地的营养释放和土壤质量. 这种最佳的堆肥策略改善了土壤特性和微生物群落.
科学领域:
- 土壤科学 土壤科学
- 环境科学 环境科学
- 微生物学 微生物学
背景情况:
- 沿海湿地土壤经常遭受退化和营养缺乏.
- 市政污水污泥堆肥是一种潜在的土壤修改,但需要改进以获得最佳性能.
- 生物炭和微生物剂可以增强堆肥特性和土壤健康.
研究的目的:
- 为了评估沿海湿地土壤中不同类型的堆肥的营养释放特征.
- 调查堆肥对土壤溶解有机物 (DOM) 光谱特性和微生物群落的影响.
- 确定最有效的堆肥策略,以改善退化的沿海湿地土壤.
主要方法:
- 使用四种堆肥进行了土壤化实验:纯市政污水污泥堆肥,玉米生物炭 (CSB) 改进堆肥,有效微生物剂 (EM) 改进堆肥和CSB+EM改进堆肥.
- 分析了营养释放,土壤pH值,电导率和溶解有机物 (DOM) 的光谱特征.
- 使用高通量测序来评估土壤微生物社区结构的变化.
主要成果:
- 所有的堆肥添加物降低了土壤的pH值,增加了电导率和植物可用的营养素.
- 改进的CSB+EM堆肥 (CSB+EM-C) 显示出最高的营养释放潜力和DOM化程度.
- 堆肥修正增加了占主导地位的细菌类的相对丰富性 (蛋白质细菌,菌细菌,细菌细菌,细菌细菌,细菌细菌),CSB+EM-C显示出最大的影响.
- 与其他堆肥相比,CSB+EM-C显著改善了土壤特性和微生物群落结构.
结论:
- CSB和EM剂的联合应用代表了城市污水污泥的最佳堆肥策略.
- 这一战略显著提高了营养供应,并改善了沿海退化的湿地土壤的土壤质量.
- 这些发现为在沿海湿地整治中利用污水泥堆肥提供了科学依据.
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