Method for increasing content of paeonia lactiflora haematochrome through exogenous inoculated strain

The invention relates to the technical field of microorganisms, in particular to a method for increasing the content of paeonia lactiflora haematochrome through exogenous inoculated strains. The method comprises the following steps: selecting a section of thick and strong rhizome at the root of the Chinese herbaceous peony, removing soil, girdling around the root for a circle by using a knife, smearing fermentation liquor of an exogenous strain at a cut for inoculation, and then wrapping with a layer of sterile preservative film. According to the method disclosed by the invention, the content of the paeonia lactiflora haematochrome can be remarkably increased by externally inoculating serratia marcescens or monascus purpureus, and on one hand, the increase of the content of the paeonia lactiflora haematochrome is beneficial to reducing the browning and fading conditions of the paeonia lactiflora in the three-dimensional drying process, so that the use of a paeonia lactiflora color fixative is reduced, and the