Oats Intercropping and Biochar Amendment Modify Soil Nutrients and Microbiota Structure to Enhance the Quality of Continuous Cropping Peppers

文献类型： 外文期刊

第一作者： Gao, Jingxia

作者： Gao, Jingxia;Xu, Wangwang;Huang, Rong;Zhao, Zijian;Zhang, Fengbao;Gao, Jingxia;Xi, Weina;Xie, Hua

作者机构：

关键词： community structure; companion planting; microbial diversity; monoculture system; pepper development; soil chemical properties

期刊名称：HORTSCIENCE （ 影响因子：1.6； 五年影响因子：1.9 ）

ISSN： 0018-5345

年卷期： 2024 年 59 卷 9 期

页码：

收录情况： SCI

摘要： To promote sustainable cultivation and soil health in agriculture, urgent strategies are needed to address the challenges posed by continuous cropping for high-quality pepper production. This study investigated the impact of oats incorporation and biochar amendment in a 12-year continuous pepper cropping system. Compared with the pepper monoculture system (CK), the combination treatment of intercropping with oats and biochar amendment (T1) significantly fi cantly increased the soluble solids content by 3.13% and the b-carotene content by 8.83-fold in pepper fruits (P P < 0.05). The soil pH under intercropping with oats or biochar modification fi cation was comparable to that of the CK. Notably, lower soil bacterial operational taxonomic units were observed under this treatment, and soil bacterial diversity decreased consistently with pepper development, regardless of the cultivation system. In contrast, fungal diversity exhibited fl uctuations under the companion oat/biochar condition, with fungal community patterns modulated throughout the pepper development process (P P < 0.05). Dominant microbes such as Sphingomonas, , Pseudomonas, , Chrysosporium, , Mortierella, , and Cladosporium were identified fi ed in continuous cropping pepper soils. Kyoto Encyclopedia of Genes and Genomes metabolic profiling fi ling revealed signifi- fi- cant effects of the cultivation type on the metabolic pathways of functional genes in soil microbial communities. Overall, the practice of planting oats and using biochar in the soils of continuously cropped pepper fi elds is feasible and sustains the pepper industry as an agroecosystem.

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