华北农学报2017，Vol.32Issue(z1)：343-346,4.DOI:10.7668/hbnxb.2017.S1.059
烘箱加热法测定土壤有机质的研究
Study on the Determination of Organic Matter in Soil by the Oven Heating Method
摘要
Abstract
In order to determine the soil organic matter content conveniently,safely and precisely,the soil sam-ples of different organic matter content in Hebei Province and national standard soil sample were used as experimen-tal materials.The oil bath heating method(NY/T1121.6-2006)was regarded as a standard method.That was the Po-tassium dichromate volumetric method by the oil bath heating.The feasibility was studied by the oven heating in-stead of the oil bath heating.At the same time the heating time and heating containers were studied by the oven heating oxidation of 180 ℃.The results showed that the standard deviation and coefficient of variation were 0.04-0.11 g/kg,0.32% -0.55% by the oven heating method,and 0.06-0.25 g/kg,0.77% -1.46% by the oil bath heating method.The soil organic matter contents between oven heating method and oil bath heating method had ex-tremely significant correlation.The regression equation was Y=0.990X+0.154(r=0.999> r0.01=0.874).Statis-tics test showed that there was no significant difference in soil organic matter content between two methods.Howev-er,there were significant differences in variation coefficients.The oven heating 30 min/180 ℃ of 150 mL triangle bottle had the same accuracy and the higher precision compared with the standard method.And the oven heating method was high efficiency,safety,environmental protection and utility.关键词
烘箱加热法/土壤有机质/重铬酸钾容量法Key words
Oven heating method/Soil organic matter/Potassium dichromate volumetric method分类
农业科技引用本文复制引用
耿暖,唐玉霞,王慧敏,段冰冰..烘箱加热法测定土壤有机质的研究[J].华北农学报,2017,32(z1):343-346,4.基金项目
国家科技支撑计划课题项目(2015BAD23B01) （2015BAD23B01）
河北省科技计划项目(14273706D) （14273706D）
