Pruning of small trees. In this period, flower buds were mainly removed, and the policy was to reduce crown, increase branches and promote roots. In the spring of the second and third years after planting, the strong branches are thinned, and the crown cutting is still the main method in the third and fourth years, but the consequences can be moderate. In the third year, the yield of blueberry plants should be controlled below 1 kg, with strong branches as the main consequence.
Pruning of adult trees. At this time, pruning is mainly to control the height of the tree, improve the lighting conditions, and give priority to thinning branches except over-dense branches, thick branches, branches of diseases and pests and roots. The root activity of blueberry is stronger than that of closed varieties when thinning branches; The stem of the towering variety is removed, the skylight is opened, and the middle branch is left. The best consequence of big branches is that they are 5 ~ 6 years old, so they should be retracted and updated in time. Strong branches erase buds and make them stronger. Adult trees have a large number of flowers, so it is necessary to cut off the flower buds of 1 and leave 2 ~ 3 flower buds on each strong branch like 1.