Micro-/nanobubble oxygenation irrigation enhances soil phosphorus availability and yield by altering soil bacterial community abundance and core microbial populations
文献类型： 外文期刊
作者： Bian, Qingyong 1 ; Dong, Zhiduo 1 ; Zhao, Yupeng 1 ; Feng, Yaozu 1 ; Fu, Yanbo 1 ; Wang, Zhiguo 1 ; Zhu, Jingquan 2 ; Ma, Liang 4 ;
作者机构： 1.Xinjiang Acad Agr Sci, Inst Soil Fertilizer & Agr Water Saving, Urumqi, Peoples R China
2.Xinjiang Acad Agr Sci, Baicheng Agr Expt Stn, Natl Soil Qual Aksu Observat Expt Stn, Aksu, Peoples R China
3.Xinjiang Acad Agr Sci, Sci & Technol Achievement Transformat Ctr, Urumqi, Peoples R China
4.Xinjiang Agr Univ, Coll Hydraul & Civil Engn, Urumqi, Peoples R China
关键词： micro-/nanobubble oxygenation irrigation; maize; rhizosphere; microbial community; available phosphorus; yield
期刊名称：FRONTIERS IN PLANT SCIENCE （ 影响因子：4.8； 五年影响因子：5.7 ）
ISSN： 1664-462X
年卷期： 2025 年 15 卷
页码：
收录情况： SCI
摘要： Micro-/nanobubble oxygenation irrigation, as a novel irrigation technique, has been widely utilized to enhance soil phosphorus availability and maize yield. Nevertheless, currently, most of the studies remain unclear about the precise mechanism through which micro-/nanobubble oxygenation improves soil phosphorus availability and maize yield. Therefore, we established two irrigation methods, conventional irrigation (CF) and micro-/nanobubble oxygenation irrigation (MB), to investigate the combined effects on enzyme activity, microbial communities, and soil phosphorus availability in the rhizosphere soil of maize.The results showed that compared to the CF treatment, the MB treatment significantly increased available phosphorus content and alkaline phosphatase activity in maize rhizosphere soil by 21.3% and 15.4%, respectively. Furthermore, MB significantly influenced bacterial diversity in the maize rhizosphere soil but did not considerably affect fungal diversity. Specifically, MB regulated the microbial community structure in the maize rhizosphere by altering the relative abundances of the bacterial phylum Firmicutes and the fungal phyla Mucoromycota, Chytridiomycota, and Basidiomycota. In addition, MB reduced the complexity of the bacterial network while increasing the interaction density among bacterial species. Meanwhile, MB enhanced the complexity of the fungal network. Structural equation modeling indicated that MB primarily promoted soil alkaline phosphatase activity by regulating bacterial community diversity, thereby enhancing soil phosphorus availability. In conclusion, the application of micro-/nanobubble oxygenation irrigation enhances the activity of alkaline phosphatasein the soil by modulating the microbial community within the rhizosphere, thereby facilitating increased phosphorus availability in the rhizosphere of maize.
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