Cultivation method of big-fruit oil apricots

The invention discloses a cultivation method of big-fruit oil apricots. The method comprises the following steps: stock selection: selecting armeniaca sibirica as a basic stock; scion selection: in spring or summer, cutting a first scion from a No.DG-1 apricot tree; first grafting: grafting the first scion to the basic stock; stock cutting and bud picking: after the grafting wound is healed, performing stock cutting and bud picking treatment, and smearing the wound with an anti-bacterial healing agent; after successful grafting, obtaining a No.DG-1 intermediate stock seedling; grafting for the second time: in spring or summer of the next year, cutting a second scion from the small-fruit oil apricot tree by adopting the method, and grafting the second scion to the No.DG-1 intermediate stock fruit seedling to obtain a big-fruit oil apricot plant. According to the big-fruit oil apricots bred through the method, the single-fruit weight and yield of the small-fruit oil apricots are remarkably increased, and the su