文献类型： 外文期刊
作者： Wang, Yijun 1 ; Xu, Yu 1 ; Jiang, Lihua 2 ; Yang, Yan 1 ; Shi, Jing 1 ; Guan, Xilin 1 ; Sun, Tao 1 ; Zhao, Huanyu 1 ; Wang, Yafei 3 ; Liu, Yumin 1 ;
作者机构： 1.Shandong Acad Agr Sci, Inst Agr Resources & Environm, State Key Lab Nutrient Use & Management, Jinan 250100, Peoples R China
2.Shandong Agr & Engn Univ, Coll Resources & Environm Engn, Jinan 250100, Peoples R China
3.Shandong Univ, Sch Publ Hlth, Dept Phys & Chem Inspect, Jinan 250012, Peoples R China
关键词： organic manure; substitution; soil quality; bacteria and fungi; community structure
期刊名称：AGRONOMY-BASEL （ 影响因子：3.7； 五年影响因子：4.0 ）
ISSN：
年卷期： 2024 年 14 卷 5 期
页码：
收录情况： SCI
摘要： Mild organic substitution is advantageous for sustainable agricultural development. In order to determine the proper fertilization strategy, it is essential to investigate the impact of substituting chemical fertilizers with varying levels of organic manure on soil nutrients, microbial communities, and crop productivity. Four treatments were implemented: no fertilizer, sole chemical fertilizer, 20% organic manure substitution, and 40% organic manure substitution. Bacterial and fungal communities were characterized through high-throughput sequencing of the 16S rRNA gene V3-V4 region and the V4 region, respectively. The 20% and 40% organic manure substitutions increased soil organic matter (SOM) content, total nitrogen (TN) content, and reduced soil pH compared to the control (CK). The 20% organic manure substitution showed the most significant improvements in soil alkaline phosphatase, urease, and invertase activities. Soil nutrient enhancement increased bacterial alpha diversity, with a milder impact on fungal alpha diversity compared to bacteria. Different fertilization treatments elevated the relative abundance of bacterial Bacteroidetes (8.11%, 21.25%, and 1.88%), Actinomycetes (12.65%, 26.36%, and 15.33%), and fungal Ascomycota (16.19%, 10.44%, and 12.69%), known for degrading recalcitrant organic matter. The sole chemical fertilizer treatment increased the pathogenic Cheatotryiales. Shared species, primarily from bacterial Actinomycetes, Firmicutes, Proteobacteria, and fungal Ascomycota phyla, were found at 20% and 40% organic manure substitution levels. Specifically, the 20% organic manure substitution level promoted the relative abundance of beneficial plant growth-promoting taxa, Oxalobacteraceae and Massilia, and suppressed pathogens, with an increase in the relative abundance of the Purpureocillium genus and Mortierellomycota. These findings suggest that a 20% OF substitution can maintain crop yield, enhance soil nutrients and enzyme activities by fostering beneficial soil bacteria, inhibiting soil-borne pathogens, and refining microbial community structure.
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