The fruit tree autumn budding technology essentials

Grafting method is commonly used in the production of fruit trees, which can be carried out in spring, summer and autumn, and is most suitable in autumn. The general survival rate can reach more than 90%. First, the selection of buds: take shoots full of buds in the middle of full buds. Take care to protect the bud pad or take a small amount of xylem when cutting buds. The buds are generally cut into shields or ring blocks, and the buds are 1.5 to 2 cm long. The size of the buds of the ring block depends on the size of the rootstock and the thickness of the buds. Second, the bud connection method: in the grafting must handle the rootstock and then cut buds, and do with the cut to follow, in order to maintain the moisture buds, improve the survival rate. Using "D" shaped buds, you can cut the "T" type mouth at the depth of 30 to 50 mm from the ground. See the xylem for depth, peel off the bark, and carefully peel off the root bark with a knife tip. The buds with shields and petioles were quickly embedded and tied with a plastic tape 10 mm wide. Only the buds and petioles were exposed. The density of packing was better than 10-15 mm above and below the incision. After the buds were grafted, the soil was 100 mm high. After approximately 15 days, the earth was opened and the survival situation checked. Third, the interface protection: fruit trees often leave some wounds after budding, affecting the growth and development of plants, severe cases can lead to death. In order to avoid rot and infection of the wound, sharp cutting blades are used to flatten the cortex and xylem around the wound. Then use Baume 5 to 10 degrees lime sulfur or 1% to 2% copper sulfate and 40% methacrylic WP to disinfect, and then apply protective agent. Fourth, after the management: budding seedlings, the following year after the spring in the budding point above 18 to 20 cm dry, untie the lashings. 3 to 4 prunings in the summer, cut branches from the rootstock. When budding shoots grow to 8 to 10 cm in length, they are tied to live piles near the base; when they grow to 20-25 cm, they are tied again at the upper end. Until the grafting of lignification, cut off the live piles and continue to keep large seedlings in the field.

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