浙江农业学报 ›› 2025, Vol. 37 ›› Issue (10): 2165-2178.DOI: 10.3969/j.issn.1004-1524.20240942

• 环境科学 • 上一篇    下一篇

物料初始pH值对堆肥理化性质及微生物群落的影响

万合锋1(), 刘国华1, 武玉祥1,*(), 蒋娟1,2, 张珍明2, 刘勇3   

  1. 1.贵州科学院 贵州省生物研究所 贵州 贵阳 550009
    2.贵州大学 资源与环境工程学院,贵州 贵阳 550025
    3.贵阳学院 生物与环境工程学院,贵州 贵阳 550005
  • 收稿日期:2024-11-04 出版日期:2025-10-25 发布日期:2025-11-13
  • 作者简介:万合锋(1986—),男,河南淅川人,硕士,助理研究员,主要从事资源环境和土壤有机碳研究。E-mail: whefeng@126.com
  • 通讯作者: 武玉祥,E-mail: 574795207@qq.com
  • 基金资助:
    贵州科学院青年科学基金(黔科院J字〔2020〕04号);贵州省科技计划(黔科合支撑〔2022〕一般218);国家自然科学基金(42367031)

Influence of initial substrate pH value on physicochemical properties and microbial community during composting

WAN Hefeng1(), LIU Guohua1, WU Yuxiang1,*(), JIANG Juan1,2, ZHANG Zhenming2, LIU Yong3   

  1. 1. Guizhou Institute of Biology, Guizhou Academy of Sciences, Guiyang 550009, China
    2. College of Resource and Environmental Engineering, Guizhou University, Guiyang 550025, China
    3. School of Biological and Environmental Engineering, Guiyang University, Guiyang 550005, China
  • Received:2024-11-04 Online:2025-10-25 Published:2025-11-13

摘要: 基于酒糟、锯末、味精下脚料、牛粪等农工废弃物,混配初始pH值分别为6.00(T1)、6.57(T2)、7.98(T3)的堆体进行堆肥,采用现场取样和室内理化分析与高通量测序相结合的方法,探究这3个处理堆肥过程中理化性质及微生物群落的演替。结果表明,对于细菌而言,从升温期到高温期:T1处理相对丰度最高的菌门从放线菌门(Actinobacteria)演变为厚壁菌门(Firmicutes),相对丰度最高的菌属一直是短杆菌属(Brevibacterium);T2处理相对丰度最高的菌门由Actinobacteria演变为拟杆菌门(Bacteroidetes),相对丰度最高的菌属由谷氨酸杆菌属(Glutamicibacter)演变为棒状杆菌属(Corynebacterium);T3处理相对丰度最高的菌门由变形菌门(Proteobacteria)演变为Firmicutes,相对丰度最高的菌属由依格纳季氏菌属(Ignatzschineria)演变为芽孢杆菌属(Bacillus)。对于真菌而言,在门水平上,3个处理升温期和高温期的优势菌门均是子囊菌门(Ascomycota)。至腐熟时,T1、T2处理的堆体pH值呈酸性,而T3处理的呈碱性,但各堆肥产品的总养分(N+P2O5+K2O)、重金属含量,及pH值、种子发芽指数都符合NY/T 525—2021《有机肥料》的相关要求。研究结果可为依据农工废物的酸碱度生产不同pH值的专用肥料提供参考依据。

关键词: 农工废弃物, 工业化堆肥, 理化性质, 微生物群落演替

Abstract:

Based on the agro-industrial waste (vinasse, sawdust, by-product of monosodium glutamate, cow dung), mixtures with the initial pH of 6.00 (T1), 6.57 (T2) and 7.98 (T3) were prepared for composting. The field sampling, indoor physical and chemical analysis and high-throughput sequencing were combined to investigate the dynamic of physiochemical properties and microbial community during the composting. It was shown that the dominant bacteria phylum of T1 treatment changed from Actinobacteria to Firmicutes from temperature-rising stage to maturity stage, while the dominant bacteria genus remained as Brevibacterium. The dominant bacteria phylum of T2 treatment changed from Actinobacteria to Bacteroidetes from temperature-rising stage to maturity stage, and the dominant bacteria genus changed from Glutamicibacter to Corynebacterium. The dominant bacteria phylum of T3 treatment changed from Proteobacteria to Firmicutes from temperature-rising stage to maturity stage, and the dominant bacteria genus changed from Ignatzschineria to Bacillus. For fungi, Ascomycota was the dominant phylum for all treatments at the tempertaure-rising stage, high temperature stage and maturiy stage. At the maturity stage, the compost of T1 and T2 were acidic, while the compost of T3 was alkaline. The total nutrient (N+P2O5+K2O) content, heavy metals content, pH value and germination index of the compost under T1, T2 and T3 all met the standards of Organic Fertilizer(NY/T 525-2021). The research could provide reference for the further production of special fertilizer with specific pH value according to the properties of agro-industrial waste.

Key words: agro-industrial waste, industrial composting, physicochemical property, microbial community succession

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