Abstract: Soil oxidoreductase is a group of enzymes catalyzing many important soil biochemical reactions and concerning with the transformation of soil organic matter,formation of humic substance,and dynamics of soil fertility.The catalytic kinetics of oxidoreductase can illuminate its catalytic characteristics, substantial properties,and response to environmental changes.This paper summarized the research advance of its kinetics,and proposed some comments in understanding its action mechanism and in regulating its catalytic processes.

Key words: Grey model, Nutrients, Chlorophyll a, Phytoplankton, Red tide, Daya bay