Grafting propagation

The grafting and propagation of pear trees are diverse, mainly including split grafting, T-shaped budding, skin grafting, bud embedding grafting and so on

Splitting method

It is mainly carried out in spring when the buds are sprouting and before germination. When grafting, first cut the rootstock at the grafting site, then cut the damaged surface, and then cut a vertical cut in the middle. When cutting scions, select a section with about 2-4 buds, cut a 3-4cm long cutting surface on both sides of the lower part, and cut from a place about 1cm away from the lower bud to avoid damage to the lower bud. The cutting surface should be slightly thicker on the outside and slightly thinner on the inside. After cutting, the outer side is the thick side, and the thin side is facing inward. Insert the scion into the cutting edge of the rootstock. The formation layers of the scion and the rootstock must be aligned. At the same time, pay attention not to insert all the cut surfaces, but about half a centimeter should be reserved, which is conducive to the healing of the wound. According to the thickness of rootstock, 1-2 scions can be inserted. Finally, wrap the interface with plastic strips to reduce the evaporation of water

T-shaped budding method

T-shaped budding is generally carried out in autumn. The grafting process is as follows: firstly, select the smooth and scar free part on the windward side of the rootstock in spring at the position about 5cm above the ground, first cut a "t" shaped incision, and then cut the bud on the scion. When cutting the bud, first cut the xylem from the lower part of the bud about 1.5cm with a knife, with a longitudinal cutting length of about 2.5cm, then cross cut from the upper part of the bud about 1cm, and then hold the bud with your hand and break off the bud piece. When inserting buds, first open the "t" shaped interface with the bud connecting knife handle, gently insert the bud piece from top to bottom, align the "t" shaped incision above the bud piece, and finally bind it with a plastic strip with a width of about 0.5-1 cm from bottom to top

Cutting propagation

Usually, cutting and cutting are carried out from May to June. Select the current year shoots on the 5-10-year-old pear trees as cuttings, and then cut them into cuttings about 10-15 cm long. Before cutting, they need to be soaked in 100ppm abt root powder solution, with a soaking depth of about 2 cm and a soaking time of about 1-2 hours, which is conducive to their rooting. The preparation of the cutting bed is as follows. A small arch shed can be set under the shade of the tree and covered with plastic film. After inserting, the temperature in the inserting bed shall not exceed 30 ℃, and the humidity shall be more than 90%