自动定氮仪碱解蒸馏法测定土壤中水解性氮含量

Determination of hydrolysable nitrogen content containing soils with automatic determination of nitrogen analyzer

介绍了自动定氮仪碱解蒸馏法测定土壤中水解性氮含量的方法,探讨了试验中主要影响因素。与现行林业行业标准碱解扩散法相比,该方法具有操作简便、快捷、干扰小、精度高、准确性好的优点,特别适合大批量样品的分析。值得在土壤分析工作中参考应用。

This paper introduced the determination method of hydrolysable nitrogen content containing soils with automatic distillation system after decomposed distillation by alkali, and discussed the primary factors that could affect the experiment. Compared with corrent agriculture industry criterion, this method had advantages of simple operation, low interference, high accuracy, precision and repeatability. It was adapted to the analysis of sample in mass , and deserved application in soil analysis.