Analysis method for judging main source of typical odor pollution of plain reservoir

The invention discloses an analysis method for judging a main source of typical odor pollution of a plain reservoir. The analysis method comprises the following steps: 1, eliminating external pollution interference of the plain reservoir; 2, analyzing the proportion trend of the dissolved odor concentration in the total odor concentration; if the proportion trend changes obviously, the correlation between the odor concentration and the number of phytoplankton is analyzed; otherwise, analyzing the relative abundance of actinomycetes microorganisms in the sediment microorganisms; 3, if the correlation between the odor concentration and the number of phytoplankton is obvious, the main source of odor pollution is phytoplankton; if the odor concentration and the number of phytoplankton have correlation but are not significant or the correlation is not significant, analyzing the relative abundance of actinomycetes microorganisms in the sediment microorganisms, and giving out a judgment result; the odor substance in