1, young tree pruning

In order to promote the early fruiting of young trees, on the basis of shaping, the pruning degree of all kinds of branches should be light, mainly in the growth period.

In order to control the growth of branches, increase branches and expand the crown. In winter, the pruning time should be postponed until before germination, so as to avoid dehydration and drying of the cut. In addition to cutting short the main branches and extension branches, properly thinning out some over-dense and cross branches, the remaining middle branches should be kept as much as possible.

2. Prune the result tree

Summer pruning is usually done after fruit picking. Thinning is used to remove the perennial branches that are too dense and strong and disturb the crown, adjust the crown structure and promote the formation of flower buds. When thinning large branches, pay attention to small and flat wounds to help heal as soon as possible. When thinning annual branches, they can be cut above the axillary buds at the base, and then thinned after the results are bare.

When pruning in winter, attention should be paid to properly retracting the 2 ~ 3-year-old branches at the top of the backbone branches and short fruit branches to stimulate the vegetative growth and the continuous formation of new fruit branches, and to prevent the fruit from moving out and the crown from being bald.

3. Pruning of old trees

The main task is to renew and rejuvenate in time to form a COVID-19 with strong growth branches. If the main branch is weak first and then has no bearing capacity, it should be retracted in time. The life span of China cherry cryptobud is about 5 ~ 10 years.

After pruning, take back the overgrown branches, select branches with proper direction, position and growth, and cultivate new main branches and lateral branches. Too much should be thinned out, and the rest should be cut short to promote branching, and then slowly released to form fruiting branches. When the big branches are updated, they should also be carried out after the fruits are picked, so as not to cause the wound to flow glue.