Abstract: In order to explore the effects of different inducers in enhancing the resistance against lily cut flower disease，roots and scales of lily bulb were soaked in chemicals such as DL-β-aminobutyric acid（BABA），Isolane（10% isoprothiolane，10% hymexazol），epibrassino1ide（epi-BR），hydrosoluble chitosan （OS），acibenzolar（BTH），abscisic acid（ABA）、MgO and NH4Cl before planted or embedded. Growth indexes，the activities of defensive enzymes such as POD，PAL，PPO and disease index were determined by three separated trials，those were potted test，field test and embedded scales test. The results showed that all the inducers involved in the research can increase activities of defensive enzymes and budding rate of scales，improve growth properties including the height，the number of the leaves and the
thickness of stems，furthermore reduce disease. Compared with the control，the treatments with OS 400 significantly promoted plant physiological and biochemical indexes and disease resistance.

Key words: lily, lily cut flower, root rot disease, physiological and biochemical index, OS