1.东南大学土木工程学院,南京 210096
2.广西壮族自治区林业科学研究院,南宁 530002
徐程翔(2001—),男,硕士研究生,主要从事水土保持与生态修复研究。E-mail: 220245335@seu.edu.cn
梁止水(1988—),男,博士,副教授,博士生导师,主要从事土壤侵蚀与生态修复研究。E-mail: zs_liang@seu.edu.cn
收稿:2026-04-27,
修回:2026-05-26,
录用:2026-06-08,
网络首发:2026-08-26,
纸质出版:2026-10-28
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徐程翔,梁止水,孙悦,等.改性亲水性聚氨酯材料对石漠化土壤理化性质的影响[J].水土保持学报,2026,40(5):47-56.
Xu Chengxiang, Liang Zhishui, Sun Yue, et al. Effects of modified hydrophilic polyurethane materials on physicochemical properties of rocky desertification soil[J].Journal of Soil and Water Conservation,2026,40(5):47-56.
徐程翔,梁止水,孙悦,等.改性亲水性聚氨酯材料对石漠化土壤理化性质的影响[J].水土保持学报,2026,40(5):47-56. DOI: 10.13870/j.cnki.stbcxb.2026.05.036. CSTR: 32310.14.stbcxb.2026.05.036.
Xu Chengxiang, Liang Zhishui, Sun Yue, et al. Effects of modified hydrophilic polyurethane materials on physicochemical properties of rocky desertification soil[J].Journal of Soil and Water Conservation,2026,40(5):47-56. DOI: 10.13870/j.cnki.stbcxb.2026.05.036. CSTR: 32310.14.stbcxb.2026.05.036.
目的
2
明确施用W-OH固化剂对广西石漠化土壤特性及导水能力的影响。
方法
2
采用湿筛法,研究不同W-OH固化剂施用量(0、1%、3%、5%)对石漠化土壤理化性质的影响。
结果
2
1)施用W-OH固化剂可显著提高土壤>0.25 mm水稳性团聚体含量、平均重量直径及几何平均直径,降低土壤的分形维数,增强土壤的结构稳定性,当施用量达到5%时,改善效果较为明显;2)SEM试验结果表明,W-OH固化剂可以对石漠化土壤颗粒进行有效胶结;3)当施用1%W-OH固化剂时,土壤电导率有所降低,其余浓度变化均不显著;4)低浓度W-OH固化剂使土壤饱和导水率显著增加,当施用水平达到5%时,土壤的饱和导水率显著降低;5)W-OH固化剂能有效降低土壤的吸水和释水速率。
结论
2
施用W-OH固化剂能够改善石漠化土壤的理化性质与水文特征,研究结果将为W-OH固化剂用于石漠化土壤改良提供一定的理论支撑。
Objective
2
This study aims to investigate the effects of W-OH soil stabilizer application on soil properties and hydraulic conductivity in rocky desertification regions of Guangxi Zhuang Autonomous Region.
Methods
2
A wet-sieving method was employed to study the effects of different W-OH soil stabilizer application rates (0, 1%, 3%,and 5%) on the physicochemical properties of rocky desertification soil.
Results
2
1) The application of W-OH soil stabilizer significantly increased the content of >0.25 mm water-stable aggregates, mean weight diameter, and geometric mean diameter, while reducing the fractal dimension of soil aggregates, thereby enhancing soil structural stability, with the most pronounced improvement observed at the 5% application rate. 2) Scanning electron microscopy (SEM) results revealed that W-OH stabilizer effectively cemented particles of rocky desertification soil. 3) Soil electrical conductivity decreased slightly at the 1% application rate of W-OH stabilizer, whereas no significant changes were observed at other concentrations. 4) Low concentrations of W-OH stabilizer resulted in a significant increase in saturated hydraulic conductivity, whereas the 5% application rate led to a significant decrease. 5) W-OH stabilizer effectively reduced both water absorption and desorption rates of the soil.
Conclusion
2
Application of W-OH soil stabilizer can significantly improve the physicochemical properties and hydrological characteristics of rocky desertification soil. These findings provide theoretical support for the application of W-OH in the amelioration of rocky desertification soils.
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