有机肥原料中有机质含量的简易测定

[目的]用简易方法测定有机肥原料中的有机质含量。[方法]以不同火力煅烧样品,将减重率作为样品的有机质含量,并与重铬酸钾氧化法相对照。[结果]木薯渣以中高火煅烧8 min,毛发渣以中高火煅烧5 min,腐殖土分别以中高火煅烧3 min和5 min并取其均值,豆腐渣分别以中火煅烧3 min和8 min并取其均值,所得减重率与重铬酸钾氧化法测得的有机质含量基本吻合。[结论]不同原料采用不同的煅烧条件,并乘以适当的校正系数,可较为准确地测定有机肥原料中的有机质含量。

The Simple Determination on the Organic Content in Organic Fat Raw Material

[Objective]The organic content in the organic fat raw material was determined with the simple method.[Methods]Burning in different samples with fire,thinking the rate of weight loss as the organic matter content of samples,and comparising with potassium dichromate oxidation,the authors made this experiment.[Result]The weight loss rate of the simple method and the measurement of potassium dichromate oxidation of organic matter content was in the basic agreement,with the condition of burning cassava slag with high fire for 8 min,burning the hair slagwith high fire for 5 min,burning humus soil with high fire for 3 min and 5 min and the lesser means.Burning rubbish respectively with fire for 8 minand 3 min and the lesser means,from.[Conclusion] Different materials with different calcination conditions multiplied by the appropriate correction factors could more accuratly determine the organic matter content of organic fertilizer raw materials.