Maize/peanut intercropping improves nutrient uptake of side-row maize and system microbial community diversity

BMC Microbiology

Qiqi Dong¹  Xiaoguang Wang¹  Kai Wang¹  He Zhang¹  Xibo Liu¹  Xinhua Zhao¹  Xiaolong Shi¹  Dongying Zhou¹  Yi Han¹  Kezhao Zhang¹  Xu Yang¹  Yang Yuan¹  Chunji Jiang¹  Haiqiu Yu¹  Zhimeng Zhang² 

[1] Peanut Research Institute, College of Agronomy, Shenyang Agricultural University;Shandong Peanut Research Institute;

关键词: Maize;    Peanut;    Wide-strip intercropping;    Nitrogen content;    16S/ITS;    Soil enzyme;   

DOI  :  10.1186/s12866-021-02425-6

来源: DOAJ

【 摘 要 】

Abstract Background Intercropping, a diversified planting pattern, increases land use efficiency and farmland ecological diversity. We explored the changes in soil physicochemical properties, nutrient uptake and utilization, and microbial community composition in wide-strip intercropping of maize and peanut. Results The results from three treatments, sole maize, sole peanut and intercropping of maize and peanut, showed that intercropped maize had a marginal advantage and that the nutrient content of roots, stems and grains in side-row maize was better than that in the middle row of intercropped maize and sole maize. The yield of intercropped maize was higher than that of sole cropping. The interaction between crops significantly increased soil peroxidase activity, and significantly decreased protease and dehydrogenase activities in intercropped maize and intercropped peanut. The diversity and richness of bacteria and fungi decreased in intercropped maize rhizosphere soil, whereas the richness of fungi increased intercropped peanut. RB41, Candidatus-udaeobacter, Stropharia, Fusarium and Penicillium were positively correlated with soil peroxidase activity, and negatively correlated with soil protease and dehydrogenase activities. In addition, intercropping enriched the functional diversity of the bacterial community and reduced pathogenic fungi. Conclusion Intercropping changed the composition and diversity of the bacterial and fungal communities in rhizosphere soil, enriched beneficial microbes, increased the nitrogen content of intercropped maize and provided a scientific basis for promoting intercropping in northeastern China.

【 授权许可】

Unknown