研究报告
段曼莉,鄢入泮,周蓓蓓,覃振伦,张育华,王全九.去电子水对牛粪秸秆好氧堆肥进程及细菌群落的影响[J].环境科学学报,2022,42(2):249-257
去电子水对牛粪秸秆好氧堆肥进程及细菌群落的影响
- Effect of de-electron water on maturation process and bacterial community during aerobic composting of cow manure and straw
- 基金项目：国家自然科学基金青年项目（No.41807131）；中国博士后基金项目（No.2019M653707）；西安市科技计划项目（No.20NYYF027）；陕西省大学生创新创业训练计划项目（No.S202010700076）
- 作者
- 单位
- 段曼莉
- 西安理工大学省部共建西北旱区生态水利国家重点实验室，西安 710048
- 鄢入泮
- 西安理工大学省部共建西北旱区生态水利国家重点实验室，西安 710048
- 周蓓蓓
- 西安理工大学省部共建西北旱区生态水利国家重点实验室，西安 710048
- 覃振伦
- 西安理工大学省部共建西北旱区生态水利国家重点实验室，西安 710048
- 张育华
- 西安理工大学省部共建西北旱区生态水利国家重点实验室，西安 710048
- 王全九
- 西安理工大学省部共建西北旱区生态水利国家重点实验室，西安 710048
- 摘要：通过对普通水进行去电子处理，得到可利用性较强的去电子水，但其对好氧堆肥进程的影响还不明确．在牛粪秸秆好氧堆肥过程中添加去电子水，分析堆肥腐熟进程，并通过细菌群落结构变化揭示其作用的微生物学机理．研究结果表明去电子水处理堆肥的电导率（EC）、腐熟度（E4/E6）和C/N分别比对照组降低了48.7%、43.2%和27.9%，堆肥最高温度和种子发芽指数（GI）分别升高了17.5%、30.6%．同时去电子水提高了Glycomyces、Ammoniibacillus、Flavobacterium、Actinomadura和Geobacillus等优势属的相对丰度，改变了细菌群落的分布．冗余分析表明堆肥不同阶段的细菌优势菌属驱动着堆肥温度、pH、EC的变化，提高GI，促进堆肥腐熟．总之，加入去电子水有利于调节堆肥环境，缩短堆肥周期，并增加优势属的相对丰度，提高堆肥产品的稳定性．
- Abstract：In this paper， de-electron water was added to cow manure and straw， to study the impact of de-electron water on the aerobic composting process.The compost maturity was monitored， and the change of bacterial community structure was analyzed to reveal the microbiological mechanism. The results showed that the Electrical Conductivity、E4/E6 and C/N in the de-electronic water treatment were reduced by 48.7%、43.2% and 27.9%， respectively. The maximum temperature of the compost and the seed germination index （GI） were increased by 17.5% and 30.6%， respectively， compared with the control group. In addition， the relative abundance of dominant genera such as Glycomyces， Ammoniibacillus， Flavobacterium， Actinomadura， and Geobacillus in the de-electronic water treatment were increased， and the distribution of bacterial communities was changed. More importantly， the RDA results showed that the dominant bacteria in different stages of composting not only drove the changes of composting temperature， pH， and EC， but also increased GI and accelerated composting maturity. In conclusion， adding de-electronic water was beneficial to adjust the composting environment， shorten the period of compost， augment the relative abundance of advantage genus， and then enhance the stability of compost products.
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