Grafting of kiwifruit is more difficult than other fruit trees. Spring grafts are used only for a short period of grafting, and they are not live once. They only pick up again in the spring of the following year, extending the production period. Therefore, we advocate summer grafting.
Grafting time Kiwifruit graft survival rate and temperature, moisture, affinity, grafting technology is closely related. Within a certain temperature range, the higher the temperature, the faster the formation of healing tissue, but the temperature is too high, the healing tissue died, grafting can not survive, generally after the branches from June to July after the lignification, the best time for grafting in early June To mid-July.
Scion selection In the result tree of the fine cultivar, the one-year-old branch that grows robustly, full of buds, and free from pests, or the resulting branch or development branch of the current year, requires that the shoots have been lignified, preferably with use.
Rootstocks selected for rootstock grafting should be plants that are robust and pest-free. The root grafting site of the rootstock should be smooth and smooth. The diameter should be 0.5 cm or more, and 1 cm is the best. In this way, the branches from the scion grow vigorously.
Grafting methods can be used single-bud abdominal and splicing methods. (1) Single bud belly joint: Select one bud on the scion, lean at 45 degrees to 2/5 of the scion's circumference at the 1-2 cm below the bud, and cut it from about 1 cm above the bud. Slightly xylem, until connected with the first incision, the removal of the bud is about 2-3 cm in length. About 10 centimeters from the ground, the rootstock is selected to be smooth on the back of the shade, and the same or a slightly larger section is cut by the method of cutting buds. The buds are embedded so that the layers are aligned and the plastic strips are tightly packed to expose the buds. And petiole. (2) splicing: used when the scion thickness is smaller than the rootstock. Cut the rootstock about 10 centimeters from the ground, cut a 3 cm incision from the middle of the section, and cut the lower end of the scion into a wedge with a 2-3 cm incline. The thickness of one side of the wedge is slightly larger than that of the other side. Scion shear 1 - 2 full shoots. Slowly insert the scion into the rootstock incision. The thicker side of the wedge forms a layer in alignment with the rootstock forming layer. The wound area is tightly packed with plastic strips, and the wax seal or plastic strip covers the top of the scion.
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