Bio-Organic Fertilizer Application Enhances Silage Maize Yield by Regulating Soil Physicochemical and Microbial Properties
文献类型： 外文期刊
作者： Tang, Ying 1 ; Nian, Lili 1 ; Zhao, Xu 1 ; Li, Juan 1 ; Wang, Zining 1 ; Dong, Liuwen 1 ;
作者机构： 1.Gansu Acad Agr Sci, Inst Soil Fertilizer & Water Saving Agr, Lanzhou 730070, Peoples R China
关键词： bio-organic fertilizer; silage maize yield; microbial diversity; ecosystem multifunctionality
期刊名称：MICROORGANISMS （ 影响因子：4.2； 五年影响因子：4.6 ）
ISSN：
年卷期： 2025 年 13 卷 5 期
页码：
收录情况： SCI
摘要： Silage maize is vital to livestock development in northern China, but intensive chemical fertilization has led to soil degradation and reduced productivity. Bio-organic fertilizers offer a sustainable alternative, though their effects on soil multifunctionality remain underexplored. This study evaluated the impact of combining decomposed cow manure, Bacillus amyloliquefaciens, and mineral potassium fulvic acid with chemical fertilizers (NPK) on silage maize yield, soil microbial diversity, and ecosystem multifunctionality (EMF). Field experiments showed that bio-organic fertilization increased silage maize yield by 10.23% compared to chemical fertilizers alone, primarily by boosting labile organic carbon and soil enzyme activity. It also enhanced bacterial richness and diversity, with little effect on fungal communities. Microbial network analysis revealed more complex and stable bacterial networks under bio-organic treatments, indicating strengthened microbial interactions. Random forest and structural equation modeling (SEM) identified soil carbon storage and bacterial diversity as key drivers of EMF, which integrates soil functions such as nutrient cycling, decomposition, enzyme activity, and microbial diversity. These findings suggest that soil bacterial diversity and its interactions with soil properties are critical to both crop productivity and soil health. The optimal fertilization strategy for silage maize in this region involves the combined use of cattle manure, Bacillus amyloliquefaciens, mineral potassium fulvic acid, and NPK fertilizers. This approach improves yield, microbial diversity, and soil multifunctionality. Future studies should consider environmental variables and crop varieties across diverse regions to support broader application.
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