Pyrolysis temperature shapes biochar-mediated soil microbial communities and carbon-nitrogen metabolism.

ABSTRACT:

Introduction

Biochar derived from agricultural residues has potential to improve soil quality and regulate microbial communities, but its effect depends strongly on pyrolysis temperature.

Methods

In this study, biochar prepared from Flammulina velutipes residue at 200 °C, 300 °C, and 400 °C was applied to cucumber seedling cultivation to evaluate its influence on soil physicochemical properties, microbial community structure, and functional metabolism.

Results

Results showed that soil pH increased significantly with biochar addition, from 5.00 in the control to 6.17 at 400 °C, while soil organic matter reached the highest level in the 400 °C treatment (90.03 g·kg^-1). Available phosphorus and potassium were also enhanced, with maximum values of 731.81 mg·kg<

SUBMITTER: Ren G 

PROVIDER: S-EPMC12511098 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature