The rootstock was seeded and propagated, and the grafting time was in spring and autumn.
Branches can be cut, split and abutted. This paper mainly introduces the split grafting method, which is the most primitive and commonly used grafting method.
Cut or saw off the selected rootstock at the grafting site. The standard of rootstock selection is that there is a certain length from top to bottom with smooth inner surface, no knots and straight grain. After the rootstock is ready, the next step is to use a cleaver to cut along the center of the rootstock. Pay attention that the force cannot be too large or too small. You can place the cleaver on the cleavage that you want to see in advance, then hold the cleaver firmly with your hands, tap the back of the cleaver gently, and insert the cleaver into the rootstock with the force of the tapping. However, when striking, the hands holding the cleaver should not shake until the cleaver is 2-5cm deep.
Scion should be cut into 5-10cm length, with 2-3 buds is the best. The most perfect way to wedge the base is to have two symmetrical facets. Step 3: joint
Use a cleaver to pry open the cutting edge of the rootstock and insert the scion into the rootstock. Remember to use a lighter action, so as not to damage the inside. The thick side of the scion should be outward and the thin side should be inward. Align the stock cambium with the scion cambium.
When the rootstock is thicker than the scion, the cortex of the rootstock is generally thicker than that of the scion. When combining, it is necessary to make the outer surface of the scion slightly closer to the inner surface than the outer surface of the rootstock, so as to make the cambium of the two coincide. In addition, the xylem can also be used as a standard to align the xylem surfaces of the two, and the cambium will naturally align with each other. If the diameter of rootstock is much larger than that of scion, a scion shall be connected on both sides of rootstock, and the combination can be carried out according to the previous method. After jointing, the grafted rootstock and scion shall be bound or sealed with wax. Be sure to wrap the cleavage and cutting tightly. Do not touch the scion during operation.
About 10 days after grafting, if you look at the buds remaining on them are still fresh and one corner of the petiole falls off, it means that this grafting activity is successful, and the binding can be removed in a few days. When the seedling grows to 80cm ~ 100cm, it has basically survived completely, and then only prune the dense branches, inward branches, overlapping branches, and keep the crown round.
