Culture method and application of dendrobium officinale

The invention belongs to the field of plant planting and cultivation, and provides a culture method and application of dendrobium officinale. The culture method comprises the three steps of seedling selection, domestication and field returning cultivation. The invention further provides a culture medium and application of the culture medium in cultivation of dendrobium officinale. The culture medium comprises peat, sawdust, oak moss, a plant mixed fermentation raw material, bacillus cereus and melaleuca alternifolia oil. According to the method, the dendrobium officinale seedlings are cultured by simulating the wild environment, then field returning cultivation is performed, the growth characteristics of the dendrobium officinale are fully considered, and the growth vigor and the survival rate of the dendrobium officinale are improved. Fertilization, pesticide and degerming agent spraying are not needed in field returning cultivation, and the method is natural and free of pollution. The polysaccharide content