Aerated irrigation can enhance soil conditions such as soil oxygen, soil temperature, and soil moisture content and alter the structure of soil microbial communities. However, there is a dearth of research on the specific mechanisms and their mutual influence. Rhizosphere soil microbes are sensitive to changes in the soil environment, and the delivery of air or oxygenated water to rhizosphere soil significantly impacts the structure of the soil microbial community. In this study, a greenhouse strawberry subsurface drip irrigation experiment with micro-nano bubble water (MNBW) was conducted, with seven different aeration treatments and one control treatment (CK). The results showed that compared to CK, the aeration treatments improved the soil conditions to varying degrees and changed the structure of the strawberry rhizosphere soil microbial community. Furthermore, the yield, vitamin C, soil oxygen content, soil temperature and soil moisture increased by an average of 108 %, 3 %, 12 %, 10 % and 4 %, respectively. The results indicated that MNBW irrigation increased the abundance of specific bacterial communities, thereby affecting strawberry yield and quality. Correlation analysis results revealed the specific mechanisms of mutual influence between soil environment and soil microbes. Therefore, AFE (aeration during the fruit expansion stage) and AB+F (aeration during both the budding stage and flowering stage) can significantly activate the microbes in the strawberry rhizosphere soil and are considered the optimal times for enhancing strawberry yield and quality through MNBW irrigation.

中文翻译：

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微纳气泡水地下滴灌通过调节微生物群落影响草莓产量和品质


加气灌溉可以改善土壤条件，如土壤氧气、土壤温度和土壤含水量，并改变土壤微生物群落的结构。然而，缺乏对具体机制及其相互影响的研究。根际土壤微生物对土壤环境的变化很敏感，空气或含氧水输送到根际土壤会显着影响土壤微生物群落的结构。本研究采用微纳米气泡水 （MNBW） 进行了温室草莓地下滴灌实验，进行了 7 种不同的曝气处理和 1 种对照处理 （CK）。结果表明，与 CK 相比，通气处理在不同程度上改善了土壤条件，并改变了草莓根际土壤微生物群落的结构。此外，产量、维生素 C、土壤含氧量、土壤温度和土壤水分分别平均增加了 108 %、3 %、12 %、10 % 和 4 %。结果表明，MNBW 灌溉增加了特定细菌群落的丰度，从而影响了草莓的产量和品质。相关性分析结果揭示了土壤环境与土壤微生物之间相互影响的具体机制。因此，AFE （果实膨大期通气） 和 AB+F （芽期和开花期通气） 可以显著激活草莓根际土壤中的微生物，被认为是通过 MNBW 灌溉提高草莓产量和品质的最佳时机。