Abstract: Taking Paenibacillus polymyxa as the biological controls bacterium, the inhibition effects of Paenibacillus polymyxa on penicilliosis of nectarine after harvest were studied. The treatment of fruit surface disinfection was studied through different methods, and the inhibition effects of Paenibacillus polymyxa with penicilliosis nectarine after harvest were also investigated with differentt reated solutionss ucha st heb iologicalc ontrolsf luid,t hea sepsis solution,t heh eateds olutiona nd thec entrifugals upernate. The results showed that for the disinfection effects, the ethyl alcohol is the best, ultraviolet ray the next and the sterilized water the worst, whereas for the inhibition effects the biological controls solution is the best, the asepsis solution and the centrifugal supernate the next and the heat treatment fluid is very weak.

Key words: endophytic strain, Paenibacillus polymyxa, nectarine, penicilliosis, biological control