Litchi bud grafting technology

Lychee grafting technology is as follows:

(1) grafting time Lychee can be grafted all year round, but in the most suitable grafting time is March to May and September to October two periods.

(2) scion picking in the selection of good mother tree, collection of disease-free, full-grown, bud eye full of annual branches as scion. After picking the branches, cut off the leaves, wrapped in wet toilet paper and packed in a plastic bag to prevent drying out. The best day to pick the branches of the same day grafting.

(3) grafting methods Currently, the grafting method of lychee is mainly used in the branch grafting of cutting, tongue grafting and other methods. The advantage of cutting is the use of more tender scion, not subject to the influence of the season and peeling ease, as long as the temperature conditions are suitable, any time can be grafted, in Hainan in the spring and fall, grafting survival rate is high, fast seedling, budding neatly. The steps are as follows:

① rootstock cutting selected smooth parts cut, cut into oblique, and in the edge of the xylem down a longitudinal cut, the length and width of the incision and the scion of the long side of the scion corresponds to. Anvil opening on one side, anvil cut off the upper part.

② Selection of scion method and budding is roughly the same, to choose a full of old 1 to 2 years old spring or fall tips as scion. But stable, full of top tips can also be used.

③ scion cutting selection of fully developed leaf buds cut into 2.5 ~ 3 cm long, deep to not hurt or slightly hurt the wood, with 1 ~ 3 strong buds, the corresponding side of the buds cut a plane only and xylem, can be through the head, can also be cut into a 1 ~ 2 cm long a cut or the opposite side of the cut into the 45-degree a short cut, 0.7 ~ 0.8 cm long.

④ jointing and wrapping the scion inserted into the cut, so that the scion and rootstock side of the cortex aligned with the contact, the rootstock incision of the cortex wrapped around the outside of the scion. With ultra-thin plastic film tape bondage, sealing, scion can break through the film on its own after joining the live, long new tips.

(4) management of grafted seedlings after survival

Seedling grafting after survival, to erase the buds on the rootstock in a timely manner, every half a month to pour a rotting dilute fecal water, every draw new tips should be sprayed in a timely manner pesticide to protect the tips to prevent insect pests. Can be in the new tips drawn to turn green before spraying 1 to 2 times 90% trichlorfon crystals 800 to 1000 times liquid or 10% cypermethrin 2000 times liquid, to prevent insect pests. When the seedling height of 30 centimeters should be centered on the top, leaving 2 to 3 main branches, for the future formation of semi-spherical crown to lay the foundation.