| 金梦野,黄娟,侯嫔,黄占斌.三种环境材料及其复合施用对盐碱化土壤的改良效果研究[J].农业环境科学学报,2020,39(1):118-124. |
| 三种环境材料及其复合施用对盐碱化土壤的改良效果研究 |
| Improvement effect of three environmental materials and their composite application on saline-alkali soil |
| 投稿时间：2019-08-08 |
| DOI：10.11654/jaes.2019-0880 |
| 中文关键词: 盐碱土壤 pH 钠吸附比 脱硫石膏 环境材料 |
| 英文关键词: saline-alkali soil pH sodium adsorption ratio desulfurization gypsum environmental materials |
| 基金项目:深圳市铁汉生态环境股份有限公司项目“矿区植被恢复多功能土壤调理剂研制与应用研究”（THRD017）；国家自然科学基金项目（41571303） |
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| 中文摘要: |
| 为了研发新型有机无机复合材料改良盐碱土壤，采用土柱淋溶模拟实验方法，研究了脱硫石膏、改性腐植酸、高分子材料及其复合材料对盐碱土壤理化性能的改良效果，并探讨了相关材料对盐碱土壤的改良机制。结果表明：与不加任何材料的对照处理（CK）相比，脱硫石膏的作用主要是降低盐碱土壤的pH值和土壤钠吸附比（SAR），淋溶后盐碱土壤pH和SAR分别下降了7.46%和37.7%；改性腐植酸的作用是降低盐碱土壤中水溶性盐含量，淋溶后水溶性盐含量较CK降低了64.61%；高分子材料主要作用是增强土壤的保水效果，土壤淋溶液总体积较CK降低了33.1%；三种材料复合处理的淋溶盐碱土壤中大于0.25 mm的土壤团聚体含量增加了20.41%，pH、SAR分别降低0.81%、26.23%。综合评价认为，三种材料复合处理能够在改善盐碱土壤理化性质的同时改良土壤结构，具有较好的综合改良效果。 |
| 英文摘要: |
| In order to develop novel organic-inorganic composite materials to improve the capacity of saline-alkali soil, this study used a soil column leaching simulation method and analyzed the effects of desulfurization gypsum, modified humic acid, polymer materials, and composite materials on improving the physical and chemical properties of saline-alkali soil; the material improvement mechanism was also investigated. The results showed that compared with the control without any additional material, desulfurization gypsum significantly decreased the pH and sodium adsorption ratio(SAR) of saline-alkali soil by 7.46% and 37.7%, respectively. The modified humic acid decreased the water-soluble salt content of saline-alkali soil by 64.61% after leaching. The polymer material significantly enhanced the water-retaining effect of saline-soil, and the volume of saline-alkali leaching decreased by 33.1%. The amount of aggregates in leached saline-alkali soil treated with the three kinds of composite materials increased by 20.41%, while the pH and SAR decreased by 0.81% and 26.23%, respectively. The result show that the three materials can improve the physical and chemical properties of saline-alkali soil as well as the soil structure. |
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