Abstract:

         We presented highpressure obturator digestion and microwave digestion methods to determine soil organic matter content by the comparison of multiple soil organic matter determination methods. Results show that the relative error and relative standard error of these two methods are less than 1.35% and 4.79%, so they are superior to traditional methods. We recommended microwave digestion as the optimum method for the determination of soil organic matter content in view of its longterm stability and facilitated operation.

Key words: soil, organic matter, highpressure obturator, digestion