Journal of Zhejiang Agricultural Sciences ›› 2025, Vol. 66 ›› Issue (11): 2772-2778.DOI: 10.16178/j.issn.0528-9017.20240158

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Effects of rotating different crops with cigar tobacco on the rhizosphere soil bacterial community

FANG Bao1(), HE Guoyou2, SHEN Junru1, TANG Xubing1, REN Longhui1, ZHEN Anzhong1, LAN Yufeng1, KONG Chuisi2,*()   

  1. 1 Yunnan Oriental Tobacco Co., Ltd., Baoshan 678000, Yunnan
    2 Institute of Agricultural Environment and Resources, Yunnan Academy of Agricultural Sciences, Kunming 650205, Yunnan
  • Received:2024-02-29 Online:2025-11-11 Published:2025-12-01

Abstract:

To investigate the effects of rotating different crops with cigar tobacco on the structure and function of the rhizosphere soil bacterial community, and to further optimize the green cultivation model of cigar tobacco, this study utilized high-throughput sequencing technology to analyze the characteristics of the rhizosphere soil bacterial community under four treatments: continuous cropping of cigar tobacco (C1), cigar tobacco-marigold rotation (C2), cigar tobacco-maize rotation (C3), and cigar tobacco-rice rotation (C4). The results showed that compared with the C1 treatment, the C2 and C4 treatments significantly (p<0.05) increased the richness of the rhizosphere soil bacterial community, while the C3 treatment significantly decreased it. The dominant bacterial phylum were consistent across all treatments, primarily including Proteobacteria, Actinobacteriota, Gemmatimonadota, and Acidobacteriota. Principal component analysis (PCA) and non-metric multidimensional scaling (NMDS) revealed that the bacterial community structures of the C1 and C2 treatments were more similar. In terms of function, the relative abundance of phototrophy, photoautotrophy and oxygenic photoautotrophy functions were generally lower in the rotation treatments (C2, C3, C4) than in C1, while the relative abundances of chemoheterotrophy and aerobic chemoheterotrophy were higher. In conclusion, rotating cigar tobacco with marigold or rice may alleviate continuous cropping obstacles by enhancing rhizosphere soil bacterial richness, enriching beneficial bacterial communities, and improving organic matter degradation capacity.

Key words: cigar tobacco, crop rotation, continuous cropping, rhizosphere soil bacteria, community structure

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