脱硫废弃物对盐渍化土壤盐基离子和油葵生长的影响  

Influence of Flue Gas Desulphurization By-products on Soil Base Cations and Helianthus annuus Growth

作　　者：李明[1] 姜丽丽[2] 孙兆军[1] 张俊华[1] 

机构地区：[1]宁夏大学新技术应用研究开发中心,银川750002 [2]中国科学院青藏高原研究所,北京100101

出　　处：《西北农业学报》2014年第12期128-134,共7页Acta Agriculturae Boreali-occidentalis Sinica

基　　金：国家自然科学基金(41301600)

摘　　要：为探明脱硫废弃物对盐渍化土壤改良效果,在2009-2010年,采用田间试验,通过施用不同量脱硫废弃物（0、0.74、1.49、2.25和3.00kg·m^-2）,研究脱硫废弃物对盐渍化土壤盐基离子和油葵生长的影响。结果表明,施用脱硫废弃物后,随施用量增加土壤pH和电导率降低;离子组成中可交换Na＋、Cl^-和CO32-含量降低,SO4^2-、Ca^2＋含量增加;离子含量20～40cm土层高于0～20cm土层,盐基离子有向下层土壤运动趋势;施用脱硫废弃物1.49kg·m^-2（T2）～2.25kg·m^-2（T3）对油葵生长具有促进作用。研究结果说明,脱硫废弃物对盐渍化土壤具有改良效果。To investigate the effect of flue gas desulphurization by-products（FGDB）on saline-soil,a field experiment with five treatments（FGDB gradient：0,0.74,1.49,2.25,3.00kg·m-2）was performed to examine the effect of FGDB on the soil base cations and Helianthus annuus growth in 2009 and 2010.The results indicated that FGDB addition resulted in a decrease in pH,conductivity and Na^＋,Cl^-,and CO3^2-in soil.FGDB addition resulted in an increase SO42-and Ca^2＋in soil.The soil base cations in 20-40 cm depth were higher than 0-20 cm depth.These results showed that soil base cations moved in the trend from surface layer to deep layer of soil.In addition,added excessive FGDB could affected growth and development of Helianthus annuus,the 1.49 kg· m^-2（T2）-2.25kg·m^-2（T3）FGDB application dosage were the best for saline-soil.To sum up,the addition of FGDB significantly restored saline-soil.

关 键 词：脱硫废弃物 盐渍化土壤 盐基离子 油葵 

分 类 号：S156.41[农业科学—土壤学] S565.5[农业科学—农业基础科学]