Jujube trees grow vigorously in the young tree period, and the pruning of young trees should focus on shaping, so as to improve the branching ability, increase the growth and quickly become crowns. The specific shaping and pruning methods are as follows:&; #40; 1。 #4 1; Tree culture. The stem should be fixed in the first year or the second year after planting, and the time should be before germination in early spring. After the stem is fixed, the first secondary branch under the incision should be cut off from the base, so as to cultivate the jujube head germinated by the main bud on the trunk into the central main branch. Next, 3~4 secondary branches with 1~2 nodes are selected for short cutting to promote the germination of jujube heads and cultivate the first layer of main branches. All the secondary branches below the main branch of the first layer should be cut off to save nutrient consumption and accelerate the growth and development of young trees. The height of the fixed stem is generally 40~80 cm. & amp#40; 2 & amp#4 1; Cultivation of main branches and lateral branches. In the second year after the date setting of jujube trees, the upright and robust jujube tree head should be selected as the central branch, and 3-4 branches with good orientation and suitable angle should be selected as the main branches of 1 layer at the lower part, and the rest can be cut off. In the third year, the central leading branch was short-circuited at the height of 60~80 cm, the 1 second secondary branch below the incision was cut off, and new jujube heads were extracted from the main buds to continue to be the central leading branches. Then, select 2~3 secondary branches scattered in 1 layer, with 2~3 buds for each branch, and cultivate the main branches of the second layer. In the future, the main branches above the third layer will be cultivated in this way. Form a tree crown with a trunk evacuation shape.

& amp#40; 3 & amp#4 1; Culture of fruiting branches. Results The general requirement of branching culture is that the branching population should not be crowded around, the individuals should not overlap, and should be evenly distributed on the main branches and side branches at all levels. With the elongation of main branches and lateral branches, jujube heads cultivate main branches in the same way. The size and density of fruiting branches are determined according to the size of space and the strength of branch potential. Generally, in the middle and lower parts of the main branches and lateral branches, there is a large space for head extension, which can cultivate a large group of fruiting branches. When the jujube head reaches a certain length, it should be picked in time to make the lower secondary branches grow longer and thicker. Jujube heads with weak growth potential can not meet the requirements and can be put on hold 1 year. In the middle and upper part of the main branch and lateral branch, the extension space of jujube head is small. In order to ensure the ventilation and light transmission conditions and clear layers, medium-sized branches should be cultivated. Jujube heads with weak growth potential can be cultivated into 3-4 secondary branches, which are inserted between the big branches and the middle branches. Excess jujube heads should be cut off from their parts to preserve nutrition and prevent mutual interference. Later, with the growth of the tree age, the main branches and side branches have grown out.

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