Effect of Soil Conditioner Interface Modification on Migration Characteristics of Saline-Alkali Ions in Irrigation Area of Yellow River

• Published in: Shuitu baochi tongbao Vol. 43; no. 6; pp. 98 - 105
• Main Authors: Chen Xiangyu, Wei Jiangsheng, Ma Shuhua, Wang Xiaohui, Liu Chenxu, Ou Yanjun
• Format: Journal Article
• Language: Chinese
• Published: Science Press 01.12.2023
• Subjects: fly ash; interface modification; saline-alkali land; soil conditioner; water salt transport
• ISSN: 1000-288X
• DOI: 10.13961/j.cnki.stbctb.2023.06.013

[Objective] Through the treatment of hydrophilic and hydrophobic by the conditioner, the influence of different interface characteristics of the conditioner on the soil water and salt transport law was explored, and the improvement mechanism of fly ash-based soil conditioner on saline-alkali land was revealed in order to provide scientific reference for the improvement of different types of saline-alkali land in irrigation area of the Yellow River. [Methods] Taking sodic sline soil in Ningxi Hui Autonomous Region as a case study, the spatial transport patterns of different salt ions in the soil before and after modification with the soil conditioners were investigated by soil column experiments. [Results] After the addition of unmodified conditioner, hydrophilic-modified conditioner, and hydrophobic-modified conditioner, the surface desalination rates were 79.72%, 59.91%, and 84.79%, respectively, for a sodic saline soil far greater than the values obtained without conditioner added (12.64%). Compared with th