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Related Experiment Video

Updated: Jan 7, 2026

A Lipid Extraction and Analysis Method for Characterizing Soil Microbes in Experiments with Many Samples

A Lipid Extraction and Analysis Method for Characterizing Soil Microbes in Experiments with Many Samples

Published on: July 16, 2017

How straw returning impacts microbial-interaction-network-mediated improvements in soil multifunctionality.

Haogeng Zhao^1,2, Zhanyuan Lu², Meijuan Cheng³

¹School of Life Science, Inner Mongolia University, Hohhot, China.

Frontiers in Microbiology

|December 26, 2025

Summary

This summary is machine-generated.

Straw returning improves black-soil health by enhancing microbial diversity and network complexity. This boosts soil multifunctionality, crop biomass, and grain yield, supporting sustainable agriculture.

Keywords:

black soil co-occurrence network production capacity improvement rhizosphere microbial community soil multifunctionality straw returning

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Area of Science:

Agricultural Science
Soil Science
Microbiology

Background:

Straw returning is crucial for soil health, but its impact on black-soil microbial communities is not fully understood.
Understanding these mechanisms is key for sustainable agriculture in black-soil regions.

Purpose of the Study:

To investigate the effects of different straw returning rates on crop rhizosphere microbial communities in black-soil areas.
To elucidate the mechanisms by which straw returning influences soil multifunctionality and crop yield.

Main Methods:

A 3-year field experiment with varying straw returning rates (none, half-dose, full-dose).
High-throughput sequencing, co-occurrence network analysis, and multi-model coupling were employed.
Analysis focused on microbial community characteristics, soil properties, and soil multifunctionality.

Main Results:

Half-dose straw returning increased microbial diversity; full-dose enriched specific bacterial and fungal groups.
Soil physicochemical properties and enzyme activity were key drivers of multifunctionality.
Straw returning, particularly half-dose, enhanced fungal and overall microbial network complexity, correlating positively with soil multifunctionality and crop yield.

Conclusions:

Straw returning enhances black-soil fertility by optimizing microbial diversity and network complexity.
Microbial network complexity directly drives soil multifunctionality, while microbial diversity indirectly contributes.
These findings provide a basis for sustainable straw utilization and agricultural development in black-soil regions.