用石棉银催化剂和油浴法测土壤有机质的比较试验

THE COMPARITIVE TEST OF USING CATALYZER OF ASBESTOS SILVER AND OIL-MELT METHOD DETECTING SOIL ORGANIC MATTER

用石棉银催化剂和油浴法对青海省有机质含量差异较大的五类土样进行了比较测定。石棉银催化剂的平均标准差为０．５２１９％，油浴法为０．１４５４％。用石棉银催化剂测有机质含量＜０．５％，＞５．６７％的土样，精密度较差。

The five samples of organic matter contents largely difference in Qinghai Province were comparitivedetected with catalyzer of asbestos silver and oil-melt methods.The mean standard difference of thecatalyzer of asbestos silver was 0. 52 1%, and of the oil-melt method was 0.1454%. Using catalyzer ofasbestos silver detected the content of the organic matter less than 0.5% and more than 5. 67%soilsample, the accuracy was not high.