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当前位置: 首页 > 文章 > 海湾泥 碱渣和粉煤灰混合基质在稳定入渗条件下离子及水盐动态研究 农业环境科学学报 2008,27 (05) 1815-1819
Position: Home > Articles > Ions and Water-Salt Dynamic of Artificial Soil with Dredged Sediment, Caustic Sludge and Coal Ash Under Steadily Infiltrated Condition Journal of Agro-Environment Science 2008,27 (05) 1815-1819

海湾泥 碱渣和粉煤灰混合基质在稳定入渗条件下离子及水盐动态研究

作  者：
黄明勇;张桥;王振宇;伍钧;张清
单  位：
天津市盐碱地生态绿化工程中心;四川省气象环境评价中心;四川农业大学资源环境学院
关键词：
混合基质;稳定入渗;离子组成;水盐动态
摘  要：
通过对海湾泥、碱渣和粉煤灰最佳配比组合在积水稳定入渗条件下的水盐动态、离子组成以及是否存在脱盐碱化问题进行了研究。结果表明,该配比基质水盐动态可分为表层脱盐、盐峰下移及底土脱盐阶段,各层次脱盐所需要的时间和用水量因深度不同而不同,0～40cm层次达到脱盐标准需要2～3d,而底土层则需要18d。淋洗前的全盐含量是淋洗后的63.5倍,混合基质盐分的化学类型由Na+-Cl-型转变到HCO3--Ca2+型,随着脱盐的进行,SAR变化与全盐量(TS)变化存在显著的正相关,RSC与全盐含量(TS)呈显著的负相关,当基质盐分降到0.1%以下时,SAR、RSC值降到1以下,且没有出现pH上升的现象,说明该配比没有出现碱化问题。
译  名：
Ions and Water-Salt Dynamic of Artificial Soil with Dredged Sediment, Caustic Sludge and Coal Ash Under Steadily Infiltrated Condition
作  者：
HUANG Ming-yong1, ZHANG Qiao2, WANG Zhen-yu1, WU Jun3, ZHANG Qing1 ( 1. Tianjin Salina Eco-landscaping Engineering Center, Tianjin 300457, China; 2. Sichuan Meteorological Bureau, Chengdu 610072, China; 3. College of Resource and Environment, Sichuan Agricultural University, Ya′an 625014, China)
关键词：
artificial soil; steadily infiltration; ions component; water-salt movement
摘  要：
Water-salt dynamic, ions composition and desalted alkalization of artificial soil, which was mixed with dredged sediment, caustic sludge and coal ash in optimizingproportion, were studied under steadilyinfiltrated condition. The results indicated that the water-salt movement of the soil included three phases, desalination phase in upper layer, salt peak downshift phase and substratum desalination phase. Time consumed and water quantity used of each layers were different with depths, it would take 2￣3 days for the total content of salt in 0￣40 cm layer reaching desalting criterion, but subsoil was 18 days. The total content of salt in the soil reduced 63.5 times through washing salt, and the chemical type ofthe artificial soil was from Na+- Cl- to HCO3-- Ca2+with desalination. There were positively linear correlation between SAR value with total salt content, negatively linear correlation between RSC value and total salt content with desalination, SAR value and RSC value decreased to 1 when total salt content of the soil dropped to no more than 0.1%. The pH value did not rise, showing that the soil alkalization was not found in the course ofdesalination and the concentrations of ions had noharmtothe growth of plant after the desalination.

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