Journal of Guangxi Normal University(Natural Science Edition) ›› 2026, Vol. 44 ›› Issue (1): 172-184.doi: 10.16088/j.issn.1001-6600.2024113001

• Ecology and Environmental Science Research • Previous Articles     Next Articles

Effect of Fenlong Tillage on Soil Fungal Community Diversity During Tuberous Root Formation Period of Cassava

HUANG Xianwen1, PENG Xiaohui1, PENG Xiaoxue1, GAN Li1, LI Guilong1, LIAO Qianting1, SHEN Zhangyou2, HUANG Yulan2*, WEI Maogui1,3*   

  1. 1. College of Agriculture, Guangxi University, Nanning Guangxi 530004, China;
    2. Cash Crops Research Institute, Guangxi Academy of Agricultural Sciences, Nanning Guangxi 530007, China;
    3. Guangxi Key Laboratory of Agro-environment and Agro-products Safety (Guangxi University), Nanning Guangxi 530004, China
  • Received:2024-11-30 Revised:2025-02-09 Online:2026-01-05 Published:2026-01-26

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Abstract: The study aims to investigate the effects of Fenlong tillage on the soil fungal community in the rhizosphere and bulk soils during the tuberous root formation period of cassava, and to reveal its yield-enhancing mechanism, providing theoretical basis for optimizing the existing cassava cultivation methods. Using South China 205 as the material, the conventional tillage as the control, the cultivation of cassava with Fenlong tillage, combined with high-throughput sequencing technology and bioinformatics methods, combined with soil agrochemical analysis methods, the study investigated the impact of Fenlong tillage on the fungal community diversity in the rhizosphere and bulk soils during the period of cassava root tuber formation. The results showed that the dry weight yield of cassava tubers root was significantly increased by the powder tillage, reaching 7.94 ± 1.13 t/hm2, which was 61.1% higher (P＜0.01) than that of the conventional tillage (4.93 ± 0.73 t/hm2), indicating that the Fenlong tillage had a significant yield-increasing effect on cassava. Fenlong tillage significantly affected the Alpha(α) diversity (P<0.05) and community composition of soil fungal communities. The dominant fungal phyla in the rhizosphere and bulk soils were ascomycetes, SAR hypergroup, basidiomycetes, mollispores, and chytrids, but there were differences in relative abundance. The correlation analysis and redundancy analysis results of the relative abundance of fungal communities and environmental factors showed that nitrase activity, available potassium content, urease activity, ammonium nitrogen content, nitrous oxide activity, catalase activity, soil pH value, organic matter content, and available phosphorus content had significant effects on the changes of fungal communities (P<0.05), with a more significant effect on the ascomycetes, basidiomycetes, and SAR hypergroup. Nitrase activity, available potassium content, urease activity, and ammonium nitrogen content were the main influencing factors. Cassava Fenlong tillage can change the environmental factors that had a greater impact on fungal community structure, such as nitrase activity, available potassium content, urease activity, alkali-soluble nitrogen nitrogen content, nitrous oxide enzyme activity, catalase enzyme activity, soil pH value, organic matter content, and available phosphorus content, thereby changing the Alpha (α) and Beta (β) diversity of soil fungal communities.

Key words: cassava, fenlong tillage, soil fungi, community diversity, tuberous root formation period, high-throughput sequencing

CLC Number:  S533; Q948.12
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