The pruning of cherry trees in different periods has different effects and methods.
Dormant pruning is usually from the beginning of mid-November and late fall to the second year in March and the fourth in April. It lasts for 140 to 150 days. During the whole period of sleep, the suitable time for pruning is as late as possible, and pruning is best when the buds are near the middle or late March. The earlier the pruning time, the longer the water loss of the wound, the easier it will be in the spring of the second year, affect the growth, and in severe cases can cause the death of the branches.
The main task of pruning the cherry tree during dormancy is to cultivate high-yielding tree structures; robust fruiting groups. The trimmed parts are mainly 1-year old branches and young perennial branches. Short cut, slow release, and shrinking are common methods for dormancy trimming.
Pruning during the growth period is mainly due to thinning or shearing after the shoots are picked up and harvested.
Pruning should pay attention to breed characteristics. In the sweet cherries, the tree stands upright, the saplings grow vigorously, and the branching force is weak. The result of the fruit-like branch is mainly bouquet, and the tree vigor is easily weakened afterwards. According to this feature, when saplings are trimmed, they should be moderately short-cut, promote branching, and increase fruit-like fruit branches; a tree with a central leading edge should be used. During the reshaping process, care should be taken in the thinning of the branches and the opening of the branches must be opened. As a result, the branches and branches must be compact and the competition branches must be used. After entering the full fruit period, it is necessary to strengthen the soil and water management, and appropriately lightly shear, so as to promote the growth of branches and buds on the top of the bouquet, and to rejuvenate the growth results. Large purple tree pose is more open, strong branching, the resulting parts easily moved out, after a large number of results, the tree vigor easier to maintain. During the saplings, we must properly eliminate the dense and over-expanding branches, lightly moderate the mediocre branches and weak branches, and promote the branching of the leaves and branches. During shoot growth, attention should be paid to picking the heart, suppressing prosperous growth, promoting branching, and flowering. The shape of the tree should adopt natural happy-shape. During the reshaping process, attention should be paid to maintaining the tree-trend balance and affiliation. As a result, the divergence type and uniaxial extension shape should be adopted for the twigs, and attention should be paid to cultivating the result twigs on both sides of the pedicle. After entering the full fruit period, it should be carried out at the apex of the main branch and the 2 to 3 year old shoots of the fruiting branch group to reduce and shear lightly to rejuvenate the growth results. The control results should be shifted outwards. When the backbone branches are weak, they should be shrunk and cut in due course. , To promote the development of latent shoots, and to carry out partial updates.
In order to eliminate the dense one-year-old branches, they can be cut short at the base and then cut off from the base. After removing the perennial branches, the wounds should be small and flat. Do not leave the piles to facilitate healing. Do not stay. Upward wounds, so as to avoid poor healing, causing wood decay, affecting tree growth.
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