矿物质对鸡粪堆肥过程中腐殖酸形成的影响：细菌群落的载体作用不容忽视。
Driving effects of minerals on humic acid formation during chicken manure composting: Emphasis on the carrier role of bacterial community.
机构信息
College of Life Science, Northeast Agricultural University, Harbin 150030, China.
Institute of Plant Nutrition and Resources, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China.
出版信息
Bioresour Technol. 2019 Dec;294:122239. doi: 10.1016/j.biortech.2019.122239. Epub 2019 Oct 3.
This work was aimed to determine the effects of different minerals on humic acid (HA) formation. Minerals can stimulate the formation of complex compounds, however, whether they can promote the conversion of complex compounds to HA has not been verified. Four treatments were setup from chicken manure mixed with rice hull and then added biochar (BC), montmorillonite (MMT) and biochar combined with montmorillonite (BC-MMT) for composting, while the control check (CK) was composted without minerals. The results showed that HA concentration was increased by 28.09%, 40.79%, 45.39% and 38.96% during CK, BC, BC-MMT and MMT composting. However, the bacterial community was the main reason for affecting HA concentration. Network analysis showed that obligate and facultative core microbes drove HA formation, and these driving effects were affected by minerals. Therefore, the core bacterial community promoted HA formation, which provided an insightful method to improve HA production.
本研究旨在确定不同矿物质对腐殖酸（HA）形成的影响。矿物质可以刺激复杂化合物的形成，但它们是否能促进复杂化合物向 HA 的转化尚未得到验证。从鸡粪中混合稻壳，然后添加生物炭（BC）、蒙脱石（MMT）和生物炭与蒙脱石的混合物（BC-MMT）进行堆肥，设置了四个处理组，而对照（CK）则不添加矿物质进行堆肥。结果表明，CK、BC、BC-MMT 和 MMT 堆肥过程中 HA 浓度分别增加了 28.09%、40.79%、45.39%和 38.96%。然而，细菌群落是影响 HA 浓度的主要原因。网络分析表明，专性和兼性核心微生物驱动 HA 形成，这些驱动效应受矿物质影响。因此，核心细菌群落促进了 HA 的形成，为提高 HA 产量提供了一种有见地的方法。
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