What tree can longan be grafted with? What is the method of grafting? With the best time

A southern fruit of longan, an evergreen tree widely cultivated in warm and humid climates. Grafting, high pressure and sowing are usually used for propagation, so what tree can longan be grafted with? What is the method of grafting? When is the best time?

What tree can longan be grafted with?

Different varieties and ages of longan can be grafted, such as longan trees with low grafting, the age of longan trees can be long or short, but it is best to choose young and middle-aged trees under 10 years old from the point of view of easy operation.

Second, when is the best time for longan grafting?

The best time for longan grafting is from February to March when the temperature is stable at 15-25 degrees, when the plant physiological metabolism is weak, the body fluid flow is low, the roots and shoots are in a semi-dormant state, and the grafted carp survive.

Third, what is the method of longan grafting?

There are many methods of longan grafting, such as bud patch grafting, tongue grafting, ventral grafting, inserting grafting, cutting grafting, leaning grafting and bud seedling rootstock grafting. For example:

1. Splicing method

(1) preparation: use a sterilized knife to cut a 1.5-2cm incision on each side of the robust, pest-free rootstock. Then cut a 5-6 cm long scion with 1 or 2 full (sprouting) axillary buds at the upper end and a fracture of about 45 °with the scion at the lower end.

(2) Operation: gently insert the scion into the interface of the rootstock along the interface, press it with your hand, and make the long cutting surface close to the bark. Then tie the interface tightly with plastic film, and then wrap the rootstock and scion, and the axillary bud of the scion should be covered with a single layer of film. Finally, you can sprinkle the insecticidal agent on the interface and the saw of the rootstock.

two。 Bud patch

(1) preparation: at the height of 10-20 cm above the ground of the rootstock, make 2 vertical parallel incisions from the bottom to the top with the tip of the knife, reaching to the xylem. Then cut the upper part of the incision into two arcs so that they cross each other and connect with the tongue shape. Then use the bud knife to pick up the bark from the tongue-shaped tip, tear it down, and immediately stick it back to the same place. With a bud grafting knife, 1.5-2 cm away from the grafted bud, cut 4-15 cm long and 1.0-1.5 cm wide with xylem.

(2) Operation: first cut the upper part of the rootskin where the buds of the rootstock is grafted by 2 + 3, then place the cut buds in the center of the interface of the buds, and insert the lower end into the anvil left behind, so that the gap between the buds and the top and both sides of the buds is 0.5-1.0 mm.

(3) Fixation: after binding and putting the bud piece, use the film strip to bind the bud piece firmly. About a month after grafting, the grafting site can be unbound if it grows well.

3. Ventral graft

(1) preparation: cut downwards with a knife at the grafting site of the rootstock at an oblique angle of 20-30 degrees to the depth of 1 stroke 3 or 2 of the xylem. Then first cut a long cutting surface with a length of 2-3 cm in the lower part of the scion, and then cut a small cutting surface with a length of 0.5-1 on the opposite side of the cutting surface to make the lower end slightly sharp.

(2) Operation: insert the large cutting side of the scion to the inside of the rootstock, then tie it up with a grafted plastic rope, and wait for the healing tissue to be completely formed, then remove the bandage thin.

There are many ways of longan tree grafting, each method is different, the above is for reference only, the specific operation shall prevail according to the actual situation.