The invention discloses a method for
grafting crab
cactus by taking pitaya as a stock. The method includes selecting a pitaya
plant which is free from pests and diseases and grows robustly, removing the lower end,
cutting the lower end into a stem segment with a flat opening, inserting the stem segment in a medium for culture for 1-2 months, and after survival, taking the stem segment as a stock;
cutting off part of pulp at 45 degrees along a central
vascular bundle on the external
diameter of the stock to form a wedge type groove, and causing the wedge type groove to go deep into the centralvascular bundle of the stock; selecting an annual green and healthy crab
cactus twig having no diseases and no pests and a telome as a cion,
cutting the two sides of the lower portion of the cion intoa
wedge shape, and exposing the white central
vascular bundle; wedging the lower portion wedge type
cut surface of the treated crab
cactus cion into the wedge type groove of the crab cactus stock, and fixing the crab cactus cion to make the crab cactus cion closely combined and not loosened; shading the grafted
plant, keeping the wound avoiding contacting with water for half a month, if the cionis not shrunk in a week after the
grafting, applying an appropriate amount of
fertilizer 10 days after the
grafting. The method has the advantages of simple operation, high
graft survival rate, strongdisease resistance and long flowering period.