两种土壤碱解氮测定方法的比较  

Comparison Two kinds of Determination Method of Soil Alkaline Hydrolysis Nitrogen

作　　者：莎娜[1] 张三粉[1] 骆洪[1] 狄彩霞[1] 聂晶[1] 李秀萍[1] 连海飞[1] 

机构地区：[1]内蒙古农牧业科学院资源环境与检测技术研究所,内蒙古呼和浩特010031

出　　处：《内蒙古农业科技》2014年第6期25-26,33,共3页Inner Mongolia Agricultural Science and Technology

基　　金：测土配方施肥项目

摘　　要：测量土壤碱解氮含量过去一般使用碱解扩散吸收法,试验研究旨在使用德国GERHARD凯氏定氮蒸馏法测定土壤碱解氮,对凯氏定氮蒸馏法进行了改进,确定了合适的蒸馏时间和蒸馏效率,与传统碱解扩散法相比,测量结果更准确,紧密度更高,操作简便,节省时间,为土壤碱解氮含量测定提供了一种准确、快速、高效的测定方法。The soil alkali-hydrolysable nitrogen content was determined generally using alkali solution diffusion absorption in the past, this research was aim to use Germany＇s GERHARD kjeldahl nitrogen determination of distillation soil alkaline hydrolysi, and improve kjeldahl nitrogen determination distillation, the appropriate time and distillation efficiency was determined, compared with the traditional alkali solution diffusion method, the measured results more accurate, higher intensity, and easy to operate, to save time. It provided a rapid,accurate and efficient measurement method for determination the soil alkali-hydrolysable nitrogen content.

关 键 词：凯氏定氮法 土壤 碱解氮 

分 类 号：S482.99[农业科学—农药学]