Jujube summer grafting points
First, grafting time. It is generally conducted from early July to late September. The grafting time is too early, the sprouting development is not substantial, and the degree of lignification of the scion is low; when the grafting time is too late, the interface is healed slowly and the survival rate is low.
Second, to prepare before. 1. Rootstock selection. Select wild jujube seedlings that grow robustly, have no pests, and have a base stem above 0.5 cm as rootstock. 2. Scion collection. Cut spruce roots that have grown vigorously, have no pests and diseases, and are full of buds and have been lignified as a scion with a diameter of 0.4 to 0.6 cm. 3. Scion preservation. In order to facilitate storage and transportation, the scion can be cut into small pieces of 20 to 30 cm long, buried with wet sand or moistened with wet sacks, and timely watered.
Third, grafting method. Using budding method with rootstock. First, select a bud on the rootstock and cut it horizontally to a depth of xylem, then cut a 1.5- to 2-cm-long "T"-shaped interface from top to bottom; cut a knife 0.5cm above the scion's full bud, deep to wood 1 ~ 1.5 cm with a knife from the bottom up quickly cut buds, the length of the rootstock is slightly shorter than the interface, the bud will be attached to the rootstock "T" shaped interface, so that the bud forming layer and the rootstock formation layer alignment (Align the top with one side) and tie it with a 0.5 cm wide plastic strip.
Fourth, then management. 15 to 20 days after grafting, check whether it survives or not. Surviving seedlings were cut into anvils at 2 to 2.5 cm above the shoots in the spring of the following year, and plastic strips were removed to promote the survival and germination of the grafted shoots.
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