2. Grafting should generally be carried out before the germination of fruit trees in early spring, because the rootstock and scion tissue are full at this time, and the temperature and humidity are also conducive to the vigorous division and healing of cambium. The selection of bud grafting is carried out in the slow growth period. In order to survive the grafting, the seedlings should germinate in the next spring.
3. Select the green branches that have formed the crown, obliquely cut about 0.5cm from the crown, cut one knife on each side into a wedge shape, with the total length of 1.5cm, and graft on the rootstock. The rootstock 0/5 cm from the ground/kloc-has reached the semi-lignified position, and the incision is slightly longer than the bud, and the depth is about one third of that of the rootstock. Then insert buds, align them with the cambium, and bind them.
4. Pay attention to cover the grafted buds and leave a small gap, so that the grafted buds can grow smoothly after they survive. Then take off the rhizome and take it out from the top of the tender part of the rhizome. Generally, 5-7 days after grafting, the bud will germinate alive. It is best to cut the rootstock twice, that is, after the bud survives, cut 15-20cm at the grafting site, and then cut the rootstock and bind it when the bud grows to about 15cm.
It is also very important to cut off the white (xylem) part of the scion and make sure it is exposed, so that the scion can grow if it is alive. Bud grafting is often used in the growing season of trees. Generally, the lateral buds of hard branches or green branches stored in winter are used as grafting buds. The advantages of this grafting method are simple operation, high survival rate, straight rootstock and fast growth.
6. Grafting retains the advantages of fruit. Improve the ability to adapt to the environment. Make fruit trees premature and increase production. At the same time, grafting can also cultivate new varieties, optimize the genes of fruit trees, adopt them well and combine them poorly. You can also change trees. Make it more practical and interesting.
7. In agricultural production, the planted fruit trees have excellent characteristics of high yield and high quality. If it is necessary to maintain its excellent characteristics, it can be achieved by grafting. If some fruit trees have poor environmental adaptability, rootstocks can be used to change their growth habits and improve the environmental adaptability of the original varieties through grafting. Fruit trees propagate through seeds, and some fruits do not bear fruit for seven or eight years. Therefore, in agricultural production, in order to produce economic value, the effect of flowering and fruiting can be achieved by grafting with mature trees.