T/CXYC 0002-2019 Cenxi soft-branch camellia replacement technology for crowning renovation

Scope

Scope: This section specifies the techniques and methods for crown replacement and transformation of low-yielding soft-branch Camellia oleifera plants in Cenxi City. This standard applies to the crown replacement and transformation of low-yielding soft-branch Camellia oleifera plants in Cenxi City. Main technical content: 3.6 Grafting methods 3.6.1 Skin grafting method 3.6.1.1 Selecting a smooth area on the base of the stock 60 cm to 100 cm above the root for the grafting interface. First, wipe off the surface dust with a cloth, then carve an "H"-shaped incision with a knife tip at the grafting interface, which should reach the xylem and be as long and wide as the scion. Peel off the cambium on both sides of the incision, upward and downward. 3.6.1.2 Carving the scion. Carve a one-leaf-and-one-bud scion with a 20° to 30° horseshoe-shaped bevel on both sides of the bud, leaving a full or half leaf. Smooth the cutting surface. 3.6.1.3 Embedding and tying the scion. Embed the carved scion into the stock's skin groove, ensuring that the grafting interface is tightly aligned with the stock's cambium. Cover the torn off stock skin with a 2.0 cm to 2.5 cm wide plastic tape, making sure not to damage the bud and keeping the tightness appropriate. 3.6.1.4 Adding a plastic cover for moisture retention. After wrapping, add a plastic cover shaped like a lantern in the direction of the bud, and tie it tightly. 3.6.2 Improved skin grafting method 3.6.2.1 Cutting off the stock. Saw off the selected stock 60 cm to 100 cm above the root, taking care to prevent the stock's bark from tearing. Flatten the sawed edge with a grafting knife, making the cut surface concave inward and lower at the base. Leave 2 to 3 main branches as nutrient branches and shade trees, and remove all others. 3.6.2.2 Skin grafting. Cut two parallel incisions parallel to the stock's cut edge downward, reaching the xylem, then peel off the bark and pull it apart. 3.6.2.3 Carving the scion. Carv

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