Grafting time: The best time for budding walnut seedlings in the northern region is from May to June. Scion collection: Select the development branch. After scion cutting, cut the leaves 1.5 to 2.0 cm from the base. When the amount of scion collection is large, prepare sacks and cover the collected scion with wet sack at any time to prevent water loss. Scion storage: It is required to be ready for use. Scoops should be stored for a maximum of 3 to 4 days after collection. Storage method: Place the scion bundled upright and place it in a container filled with fresh water, and soak it to a depth of about 10 cm. The upper half is covered with wet sacks and then placed in a cool place. If the storage time is long, you must change the water 2 or 3 times a day. Cut the shoots: cut a knife deep into the xylem at 0.5 centimeters at the upper part and 0.5 centimeters below the petiole. Cut the phloem and then cut each blade on both sides of the petiole. Depth is required to reach the xylem but not to cut the xylem. Buds can be easily removed. Open the rootstock: cut a knife across the rootstock, the length of which is the same as the length of the bud, and then cut a knife on the outside. The depth of the edge cuts the phloem without damaging the xylem. Then use a water knife to open the skin of the rootstock from the opening, and remove and peel off the skin with a width of 0.6-0.8cm. Inserting buds: Remove the buds cut from the scions and insert them into the openings of the rootstock. Be careful not to rub the buds back and forth on the rootstock to avoid layer damage. Bundling: Bundling should be from bottom to top, tied tightly and moderately. After cutting the anvil, leave 2 leaf anvils on the sprouts. Remove the plastic strips when they are 10 cm long. There are many external factors that affect the survival of walnut grafting and its own factors. When referring to this technical point, grafting must be combined with local site conditions and climatic conditions to improve graft survival rate.
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