I am not sure it is possible. Shubham Dubey could you please explain what do you actually want? For preservation of culturable bacteria you can get more information from

https://opsdiagnostics.com/notes/ranpri/aguidetobacteriapreservation.htm

Greetings and Regards

This does not seem to be feasible but the stress of rhizosphere microbial can be reduced for example, preventing waterlogging of the root environment (rhizosphere) or prolonged dryness (performing proper irrigation), proper soil conditioning (no heavy soil texture), soil pH correction (with lime or sulfur), increase of soil organic matter and ...

If you want to preserve soil for later use to profile microbiome ... I would suggest extract and preserve DNA instead of soil.

If your question is about preserving soil microbiome in the natural environment, then the answer is NO I guess. As soil microbiome is dynamic and there is an impact of season.

I consider it possible, because these microorganisms are an inseparable part of the soil; it could be said that they are not on the ground but that they "are the soil" and through inoculations and good agricultural practices the native microorganisms would be conserved