Dwarfing cultivation method for carica papaya

The invention relates to a dwarfing cultivation method for a carica papaya. The method comprises the following steps: (1) selection of a carica papaya seedling; (2) treatment of the carica papaya seedling; (3) grafting treatment: cutting a headwind-direction position, which is away from the ground by 25cm to 30cm, of the nursery-grown plant with a grafting knife to form a triangular cut in a manner that a lower cut is parallel to the ground, an upper cut is beveled, the depth of the cut is 0.5cm, and a cut surface is smooth and flat; and pinning against the back face of the cut of the nursery-grown plant with one hand, pinning against a position, which is away from a cut of a seedling by 10cm, of the seedling with the other hand, gently pressing down forcibly, controlling an oblique pressing angle in a manner of forming an angle of 30 degrees with the cut surface so as to cling the two cut surfaces together, and carrying out pinning up with a plastic clip; and (4) taking down the plastic clip after cut healin