Suitable Tree shape of Badan Apricot
According to the light-loving characteristics of Badan apricot, it is easy to obtain high yield by using the tree shape with open crown and good ventilation and light transmission. The tree shape is suitable for round head shape, layered shape, cup shape and natural happy shape, among which natural happiness is widely used.
After the seedlings were planted, they were dried at a depth of 60cm to 100cm. If the colonized seedling already has branches, but can not be used as the main branch, these branches can be retained with several buds at the base for heavy truncation. In the spring of the second year, when the new shoot is about 10 cm long, three branches with suitable extension direction and location are selected as the main branch, and the excess branches are reserved as auxiliary branches as far as possible, not in a hurry to cover the branches and prevent sunburn. However, for these auxiliary branches, in the process of growth, measures such as coring should be taken to restrain their excessive vegetative growth, so that the selected main branches can be fully extended.
The three main branches selected on the trunk can be adjacent, but should not be adjacent. The distance between the main branches should be kept at a distance of 20 cm to 30 cm, so that the main branches should extend evenly outward, can not overlap, and should not influence each other, and the branching angle should be 40-45 degrees.
When the length of the main branch reaches 50-60 cm, the lateral branches are selected in the corresponding parts of the main branches. if the nutrition is adequate and properly managed, the main branches and lateral branches with full growth and strong growth can be obtained in the autumn of that year. When pruning in winter, as long as the dense squeezed branches can be removed. If the growth of the tree is not prosperous after planting, the length of the three main branches can not meet the requirements, and when the lateral branches cannot be selected, there is no need to pick the heart or pruning in summer, and it is not necessary to grow naturally in winter, but the management of underground fertilizer and water should be strengthened. promote the tree body to be strong and grow more branches and leaves in the second year to speed up shaping.
In the first year after planting, some excess branches can be properly removed to concentrate nutrition and accelerate forming.
Side branches are easy to occur in the growth process of Badan apricot, so it is not necessary to truncate the main branches in the second year, but the main branches with strong growth should be properly controlled to maintain the growth balance among the main branches. When the overgrown branches and improper branches are not available, they should be removed as soon as possible. if they are temporarily available, the excessive vegetative growth can be inhibited, and when the growth of the main branches and lateral branches is affected, the canopy will be thinned again, and in the second year, the crown will keep 3 main branches and 6 lateral branches. and keep open tree posture and good ventilation and light transmission conditions.
3 and 4 years after planting, the main branches need not be cut short, only part of the dense branches should be removed, and attention should be paid to keep the growth balance between the main branches and lateral branches.
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