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Aims <p>This study investigated the effects of returning 'Oasis No.1' Juncao straw on saline soil amelioration and grape growth promotion.</p> Methods <p>A field experiment was conducted using 'Shine Muscat' grapevines under rain-shelter cultivation. Four treatments with different Juncao straw application rates were established: CK (0&#xa0;kg/m<sup>2</sup>), PG1 (0.5&#xa0;kg/m<sup>2</sup>), PG2 (2.5&#xa0;kg/m<sup>2</sup>), and PG3 (5&#xa0;kg/m<sup>2</sup>).</p> Results <p>Juncao straw application significantly improved soil physicochemical properties. It reduced soil bulk density, pH, electrical conductivity, and exchangeable Na⁺ content, while increasing water content, macroaggregate proportion, organic matter, and enzyme activities. Soil organic carbon content increased, with significant rises in easily oxidized organic carbon and particulate organic carbon, and decreased mineral-associated organic carbon. The bacterial community was reshaped, with PG2 enriching beneficial genera such as <i>Pseudomonas</i> and <i>Rhizobium</i>. Grape root activity and leaf area increased by up to 58.72% and 35.01%, respectively; berry weight and soluble solids increased by up to 46.82% and 6.99%, while titratable acidity decreased. Structural equation modeling demonstrated that Juncao straw enhanced berry weight by improving soil organic carbon, promoting macroaggregate formation, and regulating microbial communities, revealing a "straw input-soil improvement-microbial response-plant growth" synergy.</p> Conclusion <p>The 2.5&#xa0;kg/m<sup>2</sup> Juncao straw application (PG2) effectively alleviated salt stress and improved coastal saline vineyard soils, providing a technical basis for sustainable management.</p>

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Utilizing high-biomass Juncao to facilitate grape growth and amend soil properties via the soil-microorganism-plant synergistic interaction

  • 期刊论文

  • 发表日期：

    2026年3月11日

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  • Yue Wu,
  • Enshuai Yang,
  • Jiqiang Zhang,
  • Zhen Gao,
  • Yuanpeng Du

摘要

Aims

This study investigated the effects of returning 'Oasis No.1' Juncao straw on saline soil amelioration and grape growth promotion.

Methods

A field experiment was conducted using 'Shine Muscat' grapevines under rain-shelter cultivation. Four treatments with different Juncao straw application rates were established: CK (0 kg/m2), PG1 (0.5 kg/m2), PG2 (2.5 kg/m2), and PG3 (5 kg/m2).

Results

Juncao straw application significantly improved soil physicochemical properties. It reduced soil bulk density, pH, electrical conductivity, and exchangeable Na⁺ content, while increasing water content, macroaggregate proportion, organic matter, and enzyme activities. Soil organic carbon content increased, with significant rises in easily oxidized organic carbon and particulate organic carbon, and decreased mineral-associated organic carbon. The bacterial community was reshaped, with PG2 enriching beneficial genera such as Pseudomonas and Rhizobium. Grape root activity and leaf area increased by up to 58.72% and 35.01%, respectively; berry weight and soluble solids increased by up to 46.82% and 6.99%, while titratable acidity decreased. Structural equation modeling demonstrated that Juncao straw enhanced berry weight by improving soil organic carbon, promoting macroaggregate formation, and regulating microbial communities, revealing a "straw input-soil improvement-microbial response-plant growth" synergy.

Conclusion

The 2.5 kg/m2 Juncao straw application (PG2) effectively alleviated salt stress and improved coastal saline vineyard soils, providing a technical basis for sustainable management.