Planting and fixing stems
After germination, strictly control the growth potential of lateral branches. Generally, when the length of the lateral branch reaches 25 ~ 30cm, the branch is pulled at an angle of 90 ~110. The angle between the branches with strong growth potential and the upper part near the central trunk is larger, and the angle between the branches with weak growth potential is smaller. In order to ensure the robust growth of the central trunk, the height of the tree should reach 2 ~ 2.5 meters.
(2) Pruning in the second year. In the spring of the following year, if the number of branches in the central trunk is insufficient, we should accelerate germination or apply chemicals to promote branches, and leave piles to remove the over-thick branches formed in the first year due to improper control (branches with a diameter larger than 1/3 in the same position). The growth period is the same as the first year, and no fruit is left. Make the height of the tree reach 2.8 ~ 3.3 meters.
Pruning in the second year
Pruning in the third year (3) Pruning in the third year and beyond. Pruning in the third year is basically the same as that in the second year, and the results are strictly controlled near the branches (upper 50 cm) of the central trunk, especially for some axillary flower buds, and excellent branches can be cultivated by thinning flowers with the fruiting branches. According to the effective yield, it is determined whether the lower branches leave fruit or not. The general yield is below 300 kg/mu, so it is recommended not to leave any fruit.
Prune after the fourth year
Since the fourth year, the height of the tree has reached more than 3 meters, with 30 to 50 branches, and the plastic surgery has been basically completed. When the fruit tree enters the initial fruit-bearing stage, if the tree is weak, the flower buds will become thinner in spring, and the fruit will be delayed by one year. At the age of 7-8, the fruit is in full bloom, and the yield is controlled at 3000-4000 kg/mu.
Shaping orchard
(4) update pruning. As far as tall spindle-shaped trees are concerned, it is the key to produce high-quality fruits to ensure that the orchard population is fully exposed to light. With the growth of tree age, remove the long branches on the upper part of the trunk in time, try not to retract, and remove the competitive branches at the top in time. In order to ensure the regeneration of branches, when removing the big branches in the middle and lower parts of the trunk, small piles should be left to promote the regeneration of branches throughout life and cultivate slender and drooping fruit branches.