Efficient peach tree seedling culture method

The invention discloses an efficient peach tree seedling culture method. The method comprises the following steps that S1, a seedling culture substrate is stirred and disinfected by using an aqueous solution of potassium permanganate and covered with a plastic film for 45-52 hours, and a rooting agent and a plant growth regulator are added for use, wherein the plant growth regulator is a pesticideplant growth regulator with the effective components including flumetralin and paclobutrazol; a branch with the diameter of 7-10 mm is selected from branches which are 25-32 cm away from a main branch on a peach tree, bark with the length of 2-5 cm is stripped, the substrate is wrapped with a plastic film, the water content of the substrate is 50-65%, and the substrate is tightly tied to be isolated from air; S3, after the branch is processed, the branch takes root 20 days later, the lower end of a tied portion is cut off 120 days later, the plastic film is removed, and the branch is soaked in a nutrient solution for