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  11. Effects Of Pisha Sandstone Application Rate And Microbial Agents On Soil Nutrient Dynamics And Microbial Characteristics In Sandy Soil.

Effects of Pisha sandstone application rate and microbial agents on soil nutrient dynamics and microbial characteristics in sandy soil.

Zhishui Liang1,2,3, Xiuwen Fang4, Haiying Gao4

  • 1School of Civil Engineering, Southeast University, Nanjing, 211189, China. zs_liang@seu.edu.cn.

Scientific Reports
|November 19, 2025

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View abstract on PubMed

Summary
This summary is machine-generated.

Pisha sandstone and microbial inoculants significantly boost sandy soil fertility and biological activity. This combination enhances nutrients, microbial populations, and enzyme functions, promoting better plant growth for desertification control.

Area of Science:

  • Soil Science
  • Environmental Science
  • Microbiology

Background:

  • Sandy soils suffer from water loss, low nutrients, and erosion.
  • Pisha sandstone improves soil physical stability but its effect on fertility and microbial function is unclear.
  • This knowledge gap hinders effective desertification restoration strategies.

Purpose of the Study:

  • To investigate the impact of Pisha sandstone and microbial inoculants on sandy soil fertility and biological functioning.
  • To determine optimal Pisha sandstone ratios for soil improvement.
  • To assess the combined effects of Pisha sandstone and microbial inoculants on desertified sandy soils.

Main Methods:

  • A randomized field experiment was conducted in China's Hobq Desert.
  • Pisha sandstone was mixed with sandy soil at various ratios (0-100%) with/without microbial inoculants.

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  • Soil properties (nutrients, microbial populations, enzyme activities) and licorice growth were measured.

    • Main Results:

    • Pisha sandstone significantly improved soil nutrients and enzyme activities, peaking at a 50% ratio.
    • Microbial inoculation amplified these benefits, increasing microbial populations and enzyme activities 1.5-2.0 fold.
    • Optimal licorice growth was observed with 50% Pisha sandstone plus inoculants, correlating with high soil fertility and microbial activity.

    Conclusions:

    • Co-applying Pisha sandstone and microbial inoculants is a viable strategy for enhancing sandy soil fertility and biological function.
    • This integrated approach offers a practical solution for ecological restoration in desertified areas.
    • Positive correlations confirm the link between soil health indicators and plant growth.