When does pear tree graft survival rate high? What are the grafting methods?

The fruit of pear tree is edible and has high nutritional and medicinal value. The cultivated area and yield of Chinese pear are second only to apple. Grafting is the propagation method to ensure high yield and high yield of pear trees. So, when is the survival rate of pear grafting high? What are the grafting methods? According to uncle Lin, the best season for pear grafting is spring and autumn. The sap flows upward in spring and nutrients are stored downwards in autumn. These two seasons are the most active period of cambium, and the survival rate of grafting is higher.

Grafting method of pear tree

Pear branch grafting can adopt the method of "big wipe head", that is, four main branches with suitable direction are selected in the lower layer, sawed off at a foot and a half from the tree body, and grafted on the top. If it is too close to the trunk, the branches grow upright after survival, resulting in crowding, and if it is too far from the trunk, it is easy to cause the result part to move outward and the inner chamber empty. The central trunk is sawed off 1.5-1.8 meters above the ground and grafted on it. In order to save scions, the rest of the branches were removed.

The most commonly used method on pear trees is split grafting, which can be used for main branches with a diameter of 5-6 cm. Cut the sawed rootstock with a knife to expose the cambium, and then split it in the middle with a knife. Cut the scion into a wedge and the cutting surface should be flat and smooth. Insert the scion into the rootstock, require the forming layer to align with the cambium, show white on the top and pedal empty on the bottom. Each main branch is connected with two scions, sealed with soil on the outside, and then wrapped in plastic film, so that it is connected.

The method of insertion can be used for the thicker main branches. First cut the rootstock with a knife to expose the cambium, insert it with a bamboo stick to facilitate the insertion of the scion, then cut the scion into a horseshoe shape, cut off 2/3 of the skin on the back of the horseshoe shape, insert the cut scion into the rootstock, seal it with soil on the outside, and then seal it with plastic film. Insert three scions on each main branch. That makes it a good connection.

The method of abdominal grafting can be used for pear trees with partial crown. In the direction of the lack of branches, first cut a triangular opening in the bark of the main branch, insert it with a bamboo stick, then cut the scion into a horseshoe shape, remove the outer skin of the horseshoe-shaped back, and insert the cut scion into the bark. The outside is sealed with clay, and then sealed with plastic film. That makes it a good connection.

Main value of pear tree

Pear trees play an ornamental role. In addition to sweet fruit and elegant flowers, pear trees also have a unique tree-shaped beauty, which is suitable for residential viewing and courtyard cultivation.

Pear fruit has the function of invigorating body and relieving thirst and clearing gastrointestinal heat accumulation.

Time: 2019-04-11 Click: