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Related Experiment Video

Updated: Nov 4, 2025

Measuring and Mapping Patterns of Soil Erosion and Deposition Related to Soil Carbonate Concentrations Under Agricultural Management
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Soil potentials to resist continuous cropping obstacle: Three field cases.

Ge Tan1, Yongjun Liu2, Shuguang Peng3

  • 1School of Minerals Processing and Bioengineering, Central South University, Changsha, 410083, China.

Environmental Research
|May 30, 2021
PubMed
Summary

Continuous cropping obstacles in tobacco fields are linked to lower soil nutrients and bacterial diversity. Resisting these obstacles involves maintaining higher soil organic matter, nitrogen, and phosphorus levels, crucial for soil health and crop yield.

Keywords:
Community structureContinuous cropping obstacleMolecular ecology networks (MENs)Soil bacterialSoil property

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Area of Science:

  • Agricultural Science
  • Soil Science
  • Microbiology

Background:

  • Continuous cropping is prevalent in modern agriculture but often leads to soil degradation and obstacles.
  • Few studies differentiate soil microbial communities between continuous cropping obstacle-prone and obstacle-resisting soils.

Purpose of the Study:

  • Investigate soil property and bacterial community differences in continuous tobacco cropping soils with and without obstacles.
  • Provide insights for preventing and managing continuous cropping obstacles.

Main Methods:

  • Collected soil samples after 10-20 years of continuous tobacco cropping.
  • Analyzed soil properties (SOM, AP, TN, NO3--N, NH4+-N) and bacterial community diversity.
  • Utilized molecular ecological networks to identify keystone taxa.

Main Results:

  • Soils resisting continuous cropping obstacles showed significantly higher soil organic matter (SOM), available phosphorus (AP), total nitrogen (TN), nitrate-N (NO3--N), and bacterial diversity.
  • SOM, AP, TN, and ammonium-N (NH4+-N) significantly influenced bacterial communities, with NH4+-N explaining the most variation.
  • Key bacterial taxa, including Acidobacteria groups, showed significant abundance changes between the two soil conditions.

Conclusions:

  • Reduced soil nutrients and bacterial diversity, along with altered keystone taxa, contribute to continuous cropping obstacles, soil-borne diseases, and reduced crop potential.
  • Strategies like crop rotation, intercropping, bio-fertilizers, and soil conditioners can stabilize the soil-crop-microbial system and mitigate these obstacles.