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土壤全氮测定是土壤肥力测定工作中一项最基本的项目,迄今至少有100年以上的历史。目前普遍采用的克氏定氮法早在1883年就已闻世,以后人们又对这一方法不断作了改进和创新。在消煮和蒸馏方面由常量
Determination of soil total nitrogen is a soil fertility determination of a basic project, so far at least 100 years of history. The commonly used Kjeldahl method has been known as early as 1883, and people have made further improvements and innovations in this method afterwards. In the digestion and distillation by the constant