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Spring pruning method for densely planting jujube trees
The coronal sparse layer is 80 to 90 cm high, suppresses the secondary branch on the trunk, promotes 3 to 4 dates, and extends the top of the jujube head upwards to become the trunk extension. The following 2 to 3 jujube heads Train to the main branch. In the second year, the main branch was left short of 60 centimeters, except for 2 to 3 secondary branches under the cut, so that two main branches and one main extension branch were formed. In this way, the tree of a stem and five main branches will basically form. The main branch on the trunk is generally not short-cut. When it grows to about 90 cm, it can be picked up. The main branch is the basic unit of the result, and the result is naturally opened. After 7 to 8 years of maintenance, the resulting part is shifted outwards, and the output begins to decline. It should be updated in a timely manner. That is to say, shrink back to contract at a height of 1 meter and prune the old branches on the trunk to start the second round of plastic surgery. Cylindrical shape of this tree can be used to sit seedlings or planted rootstock seedlings before grafting. Grafting growth of up to 1 to 2 meters in the same year can be done without pruning. When the second year is up to 2 meters, it will be dried and dried. The third year will result. In the fifth and sixth years, the second branch of the trunk begins to sprout the jujube head, selecting the position, direction, and growth of the appropriate branch shoots as the main branch. The excess shoots are wiped off immediately after germination. This tree can last about 10 years. If you continue to use the cylinder after the update, you can retreat near the ground, and then select a strong jujube head for cultivation after branching. If you plan to change to a sparse layer, you can retreat at about 1 meter from the ground. , And cut off the original branches on the trunk, began the second round of plastic surgery.