HUBEI AGRICULTURAL SCIENCES ›› 2025, Vol. 64 ›› Issue (10): 27-36.doi: 10.14088/j.cnki.issn0439-8114.2025.10.005

• Resource & Environment • Previous Articles     Next Articles

Effects of short-term flue-cured tobacco-maize rotation on soil enzyme activities, microbial community structure, and substance metabolism

XU Da-bing1, SUN Yu-xiao2, XIA Peng-liang2, TAO Yong-le1,3, ZHOU Jian-xiong1, ZHAO Shu-jun1, LI Yan-yan4   

  1. 1. Institute of Plant Protection and Soil Fertilizer, Hubei Academy of Agricultural Sciences, Wuhan 430064, China;
    2. Enshi Tobacco Company of Hubei Province, Enshi 445000, Hubei, China;
    3. College of Life Sciences, Yangtze University, Jingzhou 434023, Hubei, China;
    4. Hubei Tobacco Science Research Institute, Wuhan 430030, China
  • Received:2025-06-02 Online:2025-10-25 Published:2025-11-14

Abstract: Mountainous yellow-brown soil in the Wuling Mountain area was studied with four treatments: continuous flue-cured tobacco cropping(KKK), flue-cured tobacco-maize-flue-cured tobacco rotation(KYK), maize-flue-cured tobacco-maize rotation (YKY), and continuous maize cropping(YYY), to investigate the effects of short-term flue-cured tobacco-maize rotation on soil chemical properties, enzyme activities, microbial community structure, and substance metabolism. The results showed that rotation treatments had no significant effects on soil alkali-hydrolyzable nitrogen, available phosphorus, available potassium, or organic matter content, but significantly altered soil enzyme activities. The KYK treatment significantly increased cellulase activity, whereas the YKY treatment significantly decreased urease and sucrase activities. Analysis of the microbial community structure indicated that rotation altered the community structure and diversity of bacteria and fungi. The KYK treatment increased the relative abundance of Acidobacteria and Actinobacteria, while the YKY treatment elevated the abundance of Bacteroidota and Proteobacteria. In fungal communities, rotation treatments increased the relative abundance of Ascomycota and Mortierellomycota. Metabolomic analysis revealed that the KYK treatment significantly increased the contents of diterpenoids and fatty acid amides. Correlation analysis demonstrated a positive relationship between sucrase activity and bacterial diversity, and carbohydrate metabolites were closely associated with the microbial community structure. Short-term flue-cured tobacco-maize rotation could alleviate continuous cropping obstacles by regulating soil enzyme activities, microbial community structure, and substance metabolism, thereby promoting the coordinated and sustainable development of tobacco and grain production in the Wuling Mountain area.

Key words: short-term, flue-cured tobacco-maize rotation, soil enzyme activities, microbial community structure, substance metabolism

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