生物质炭对盐土改良效应研究  

Effects of biochar on saline soil improvement

作　　者：张雯[1] 耿增超[1] 陈心想[1] 高海英[1] 

机构地区：[1]西北农林科技大学资源环境学院农业部西北植物营养与农业环境重点实验室,陕西杨凌712100

出　　处：《干旱地区农业研究》2013年第2期73-77,105,共6页Agricultural Research in the Arid Areas

基　　金：林业局“948”项目“林果木生物质综合转化技术引进”(2009-4-64);农业部“948”项目“生物炭技术引进及消化”(2010-Z19);陕西省攻关项目“高效生物炭基缓释肥配方及施用技术研究”(2010K02-12-1);陕西省自然科学基础研究计划项目(2010JM5004)

摘　　要：采用小麦、糜子连续盆栽种植试验方法,研究了添加不同用量的生物质炭后,盐土中基础养分含量、pH值、阳离子交换量、水溶性盐及其他盐分离子含量的变化,以期为生物质炭在盐土改良中的应用提供参考。结果表明:随生物质炭用量的增加,盐土中有机碳含量明显提高,矿质态氮、有效磷及速效钾变化很小;pH值略有降低,但各处理间差异不显著;阳离子交换量大幅度增加;水溶性盐含量降低明显,其中Na+、K+、Mg2+及Ca2+降低幅度较大,Cl-和SO42-含量也显著降低。在该盆栽试验中,生物质炭对盐土具有良好的改良效果。By planting wheat and proso continually,a pot experiment was conducted to evaluate the changes of basic nutrient content,pH value,cation exchange capacity,water-soluble salts and other salt ions after adding different amount of biochar to the saline soil.The results showed that： with the amount of biochar increasing,the content of organic carbon in the saline soil was significantly improved,while the mineral nitrogen,available phosphorus and available potassium changed very little;the pH value was slightly lowered,but there was no significant differences among the treatments;the CEC increased substantially;the content of soluble salts decreased significantly,especially for Na＋,K＋,Mg2＋ and Ca2＋,and the content of Cl-and SO42-also decreased remarkably.In conclusion,the saline soil was improved effectively by the biochar.

关 键 词：生物质炭 盐土 改良 

分 类 号：S156.4[农业科学—土壤学]