The soil organic matter（OM）, nitrogen（N）, phosphorus（P） and potassium（K）, as soil primary fertility factors, always are effective indicator of soil fertility quality. In the present study, five subtropical paddy soils developed from different parent materials were selected, and take profiles samples with soil formation, analyzed the profile distribution of OM and NPK. The results showed that, the contents of OM differ significantly from various soil layers, as well as different parent materials. And they mainly concentrated on the ploug...
