The invention discloses a method for
grafting of a cucumber on a black-seed pumpkin in Yunnan, belonging to the field of
crop breeding. According to the method, the black-seed pumpkin in Yunnan is used as a stock, a growing point and axillary buds on two sides of the stock are removed by a blade, a special bamboo stick of 0.5cm is vertically inserted into the center of the growing point and is maintained in a stem, a cucumber
seedling is taken, the under-
cotyledon part is removed by obliquely
cutting at 0.4-0.6cm under the
cotyledon of the cucumber
seedling for an angle of 25-30 degrees, the bamboo stick is taken out, the cucumber
seedling is inserted into a
grafting hole, and the
cotyledon of the cucumber and the cotyledon of the stock are arranged in a cross-shaped vertical shape; and after
grafting is performed,
moisture is kept for 3-5 days in an enclosed environment in a
greenhouse, the temperature is maintained at 25-30 DEG C at
daytime and 18-20 DEG C at night for seedling hardening, then ventilation is performed gradually, and complete ventilation is performed on the ninth or tenth day. The black-seed pumpkin in Yunnan is used as the stock in the method, diseases which can easily occur to certain cucumber seedlings can be eliminated completely, and the stress tolerance and
disease resistance can be better improved. Since direct
insertion is adopted for grafting, the rate of incidence of adventive roots is very low, and the
survival rate of grafted seedlings can be guaranteed to be up to 98 percent.