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一、“土壤全氮简易计算法”的内容(烘干法) 土壤全氮简易计算法(以下简称计算法)是借助“简化公式”与查表相结合的计算方法。它是通过对大量样品的分析,推导和系统归纳,将原计算公式:全N％=((V-V_0)×N×0.014×100×(1+吸湿水))/W简化为:全N％=(V-V_0)·S “计算法”在我县农科所化验室经过900个样次的验证,其数据可靠,误差在允许范围以内(≤0.005％)。应用“计算法”提高了全氮分析效率。
I. Content of Soil Simple Nitrogen Calculation Method (Drying Method) Simple soil total nitrogen calculation method (hereinafter referred to as calculation method) is a calculation method combining “simplified formula” with look-up table. It is through a large number of samples analysis, derivation and system induction, the original calculation formula: All N% = ((V-V_0) × N × 0.014 × 100 × (1 + hygroscopic water)) / W reduced to: all N % = (V-V_0) · S “calculation method” in our county agricultural laboratories after 900 samples of verified, the data is reliable, the error is within the allowable range (≤ 0.005%). Applying the “calculation method” improves the efficiency of total nitrogen analysis.