液体地膜厚度对高含水土层水盐运移的影响  

Impact of Thickness of Liquid Film on Water and Salt Migration in Aquifer

作　　者：张芮嘉[1] 宋翠银[1] 孔秋婵[1] 

机构地区：[1]四川大学化工学院,四川成都610065

出　　处：《现代农业科技》2012年第21期238-240,共3页Modern Agricultural Science and Technology

摘　　要：盐碱土进行漫灌洗盐后,形成高含水土层,其表层的高湿度界面影响表层以下的水盐运移通量。铺施4种不同厚度的自制液体地膜,测定土壤的含水量、含盐量和pH值。研究结果表明,液体地膜具有保水保湿作用,具有抑制土壤发生次生盐渍化的效果;液体地膜的铺施抑制了土壤的水盐运移速度,土壤可能发生碱化现象;最适宜的液体地膜厚度为4～6 mm,此厚度范围内的液体地膜效果最好。The saline-alkali soil had an aquifer after flood irrigation ,and the high humidity interface of the aquifer affected the flux of water and salt migration of the layer under the surface. Four self-made liquid films of different thickness were spread ,and the moisture content, salt content and pH value of the soil were determined. The result showed that liquid film had the water retention and the effect of restraining secondary salinization of the soil ;the spreading of liquid film restrained the rate of water and salt migration, and the soil may be alkalized ;the most suitable thickness of liquid film was 4-6 mm,and the result of the film which was in the thickness range was the best.

关 键 词：液体地膜 厚度 水盐运移 盐碱化 影响 

分 类 号：S156.4[农业科学—土壤学]