How to prune and plant jujube trees in spring
The small crown has a thinning layer shape and a stem height of 80 cm and 90 cm, which suppresses the secondary branches on the trunk and promotes the development of 3 jujube heads, so that the uppermost jujube heads extend upward and become the trunk extension branches, and the lower 2 jujube heads are cultured as the main branches. In the second year, the main branch was cut short by about 60 cm, except for 2 or 3 secondary branches under the shearing mouth, forming two two-layer main branches and one trunk extension branch. In this way, the tree shape of one middle trunk and five main branches is basically formed. The main branch on the trunk is generally not truncated. When it grows to about 90 cm, it can be coring. The main branch is the basic unit of fruit, which opens naturally after fruiting, and after being maintained for 7-8 years, the fruiting position moves out and the yield begins to decline, which should be renewed in time. That is, the dry height of 1 meter will be reduced, and the original old branches on the trunk will be trimmed to begin the second round of plastic surgery.
The cylindrical shape of the tree can be used to sit on the ground or to plant rootstock seedlings before grafting. The growth of new shoots in the year of grafting can reach 1 to 2 meters, but it does not need to be pruned. When it reaches more than 2 meters in the second year, it will be peeled and dried, and it can bear fruit in the third year. In the fifth and sixth years, the secondary branches on the trunk began to germinate jujube, and the branches with suitable position, direction and growth were selected as the main branches, and the excess shoots were erased in time when they just germinated. This kind of tree can last for about 10 years. If the cylindrical shape continues to be used after the update, it can be severely retracted near the ground, and a strong jujube can be cultivated after branching; if it is to be changed to a small crown and sparse layer shape, it can be retracted at about 1 meter from the ground, and the original branches on the trunk can be cut off to start the second round of plastic surgery.
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Experience of cultivating jujube in autumn
First, the earlier the planting time in autumn, the higher the survival rate. It is suitable from mid-October to early November. Second, dig the planting pit with a length, width and depth of 60 cm, apply sufficient bottom fertilizer, fill and water to be planted. If the soil moisture is good, it can be planted with digging holes and watered after planting. three
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Control of diseases and insect pests of planting winter jujube trees in autumn and winter
After the beginning of autumn, the winter jujube tree gradually entered the dormant period, and the drug resistance was high. with the decrease of temperature, the diseases and insect pests entered the bark cracks, scars, branches, fallen leaves, fallen fruits, stiff fruits or soil to overwinter. Therefore, it is necessary to seize the favorable opportunity for disease and pest control in autumn and winter.
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