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本文主要研究了有机肥料全氮测定方法比较实验。实验结果表明:以H2SO4-H2O2代替定氮标准法中混合催化剂的改进法Ⅰ和H2SO4-HCLO4消煮的改进法Ⅱ两种方法进行消煮后与定氮标准法测定结果相比差异不显著,且两种改进方法均优于标准定氮法,特别是改进方法Ⅱ简便易行,省工省时,易操作等优点,是一种快速有效的测定有机肥中全氮测定方法。
In this paper, we mainly studied the comparative experiments of determination methods of total nitrogen in organic fertilizer. The experimental results show that the method of H2SO4-H2O2 instead of the standard method of mixed catalyst improved method Ⅰ and H2SO4-HCLO4 digestion improved method Ⅱ two methods after digestion and determination of nitrogen standard method compared with no significant difference, The two improved methods are better than the standard nitrogen method, especially the improved method Ⅱ is simple and easy, saving time, easy to operate, etc., is a fast and effective method for determination of total nitrogen in organic manure.