Enzymatic fermentation of rapeseed cake significantly improved the soil environment of tea rhizosphere
文献类型: 外文期刊
第一作者: Song, Yujie
作者: Song, Yujie;Wang, Huan;Zhang, Shuning;Fan, Kai;Mao, Yilin;Zhang, Jie;Han, Xiao;Chen, Hao;Xu, Yang;Sun, Kangwei;Wang, Yu;Sun, Litao;Ding, Zhaotang
作者机构:
关键词: Camellia sinensis; Rapeseed cake; Rhizosphere microorganisms; Soil metabolites
期刊名称:BMC MICROBIOLOGY ( 影响因子:4.2; 五年影响因子:4.7 )
ISSN: 1471-2180
年卷期: 2023 年 23 卷 1 期
页码:
收录情况: SCI
摘要: Background Rapeseed cake is an important agricultural waste. After enzymatic fermentation, rapeseed cake not only has specific microbial diversity but also contains a lot of fatty acids, organic acids, amino acids and their derivatives, which has potential value as a high-quality organic fertilizer. However, the effects of fermented rapeseed cake on tea rhizosphere microorganisms and soil metabolites have not been reported. In this study, we aimed to elucidate the effect of enzymatic rapeseed cake fertilizer on the soil of tea tree, and to reveal the correlation between rhizosphere soil microorganisms and nutrients/metabolites. Results The results showed that: (1) The application of enzymatic rapeseed cake increased the contents of soil organic matter (OM), total nitrogen ( TN), total phosphorus (TP), available nitrogen (AN), and available phosphorus (AP); increased the activities of soil urease (S-UE), soil catalase (S-CAT), soil acid phosphatase (S-ACP) and soil sucrase (S-SC); (2) The application of enzymatic rapeseed cake increased the relative abundance of beneficial rhizosphere microorganisms such as Chaetomium, Inocybe, Pseudoxanthomonas, Pseudomonas, Sphingomonas, and Stenotrophomonas; (3) The application of enzymatic rapeseed cake increased the contents of sugar, organic acid, and fatty acid in soil, and the key metabolic pathways were concentrated in sugar and fatty acid metabolisms; (4) The application of enzymatic rapeseed cake promoted the metabolism of sugar, organic acid, and fatty acid in soil by key rhizosphere microorganisms; enzymes and microorganisms jointly regulated the metabolic pathways of sugar and fatty acids in soil. Conclusions Enzymatic rapeseed cake fertilizer improved the nutrient status and microbial structure of tea rhizosphere soil, which was beneficial for enhancing soil productivity in tea plantations. These findings provide new insights into the use of enzymatic rapeseed cake as an efficient organic fertilizer and expand its potential for application in tea plantations.
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