电热干燥箱恒温加热法测定土壤腐殖质的含碳量  

Drying oven digestion method for determining the organic carbon of soil humus

作　　者：汪海珍[1] 徐建明[1] 谢正苗[1] 

机构地区：[1]浙江大学土水资源与环境研究所,浙江杭州310029

出　　处：《浙江大学学报（农业与生命科学版）》2001年第1期43-46,共4页Journal of Zhejiang University:Agriculture and Life Sciences

基　　金：国家自然科学基金资助项目! (4 98710 44 ) ;国家重点基础研究发展规划资助项目! (G19990 1180 9)

摘　　要：比较研究了利用传统的油浴法和 150℃电热干燥箱恒温加热 2 0、30、4 0 min后 ,测定 5种不同土壤腐殖质的含碳量 .结果表明 :150℃电热干燥箱恒温加热 30、4 0 min与油浴法之间不存在显著差异 ,但加热 30 min的测定方法与油浴法间的相关性更显著 ( Y=1.0 0 82 X+0 .0 0 0 3,r=0 .9992 **) . 150℃干燥箱恒温加热法具有操作简便、重现性好、无实验室二次污染等优点 .The traditional oil melt method and drying over digestion for 20 minutes ,30 minutes and 40 minutes under 150 ℃ were employed to measure the organic carbon content in soil humus extracts The results indicated that there was not significant difference between the drying over digestion for both 30 minutes and 40 minutes at 150 ℃ and the traditional oil melt method It was found that the correlation between traditional oil melt method and digestion for 30 minutes at 150 ℃ in drying oven was more significant ( Y=1 008 2 X +0 000 3,r=0 999 2  ) 150 ℃ drying oven digestion method has the advantages of easier operation, better reproducibility, no laboratory pollution, etc

关 键 词：土壤腐殖质 干燥箱恒温加热法 油浴法 含碳量 测定 

分 类 号：S151.9[农业科学—土壤学] S153.622[农业科学—农业基础科学]