风化煤对苏打盐化土盐分运移的影响  

Effect of Weathered Coal on Soda-saline Soil Salt Transport

作　　者：何杰[1] 张强[2] 王斌[2] 闫敏[2] 冯悦晨[2] 黄高鉴[2] 王琼[1] 

机构地区：[1]山西大学生物工程学院,太原030006 [2]山西省农业科学院农业环境与资源研究所,太原030031

出　　处：《水土保持学报》2016年第3期84-89,95,共7页Journal of Soil and Water Conservation

基　　金：山西省科技攻关项目(20130311009-1);山西省农业科学院博士资助项目(YBSJJ1309)

摘　　要：针对山西省大同盆地中度苏打盐化土,利用山西灵石风化煤作为改良材料,进行室内培养试验和原状土柱模拟试验,研究风化煤不同施用量对苏打盐化土的pH、电导率(EC)、水溶性全盐量、水溶性Na^+的影响,以及风化煤对水溶性全盐量、水溶性Na^+在土壤中运移规律的影响。研究表明:通过培养试验发现15g/kg的风化煤处理的效果最佳,pH和碱化度(ESP)分别降低4.1%和34.6%。通过风化煤和纯水淋洗的共同作用下,试验中5个处理土壤0—10cm的pH值分别降低3.0%,7.2%,9.6%,10.6%和9.1%。风化煤15g/kg的处理,使0—10cm土壤中盐分占总盐分的比例从39.0%下降到11.8%。15g/kg的处理,能降低土壤中28.4%水溶性Na^+。结果表明,在大同盆地苏打盐化土改良,风化煤能有效降低土壤表层pH、水溶性盐分和水溶性Na^+,最佳用量是15g/kg。Aiming at soda-saline soil in Shanxi Datong basin under arid climate conditions, Shanxi Lingshi weathered coal was used as modified material, cultivating indoor and soil column simulation method was conducted, and soil pH, electrical conductivity （EC）, soluble salts and soluble sodium were measured under different application amounts of weathered coal. This study investigated the soil salinity transport. The results showed that the best application amount of weathered coal was 15 g/kg. pH and exchange sodium percentage （ESP） reduced 4.1% and 34.6 % in the cultivating indoor. Joint action weathered coal and water, pH valueof thetestin five0-10 cm soilwas reduced by 3.0%, 7.2%, 9.6%, 10.6% and 9.1%. 0-10cm soil salinity proportion of the total salt decreased from 39.0% to 11.8G from 15 g/kg weathered coal. The treatment （15 g/kg） could reduce soil soluble sodium by 28.4G. The results showed that soil improvement of soda-saline soil in Datong Basin, weathered coal could reduce soil surface pH, soluble salts and soluble sodium. The results showed that in the improvement of soda-saline soil in Shanxi Datong, the best application amount of weathered coal was 15 g/kg.

关 键 词：苏打盐化土 风化煤 水溶性钠 水溶性盐分 大同盆地 

分 类 号：S156.4[农业科学—土壤学]