First, trim the young trees.
Young persimmon trees usually refer to small persimmon trees that are still growing and have not yet borne fruit.
Because of its young age, this kind of tree has weak roots, stems and branches. Therefore, when pruning, it is mainly to cultivate the skeleton, stretch the branches and shape the tree. At the same time, it is assisted by enucleation to promote growth and fruiting.
1. Prune with culture skeleton
Regarding fruit tree pruning, there is a folk saying that "the big branches open the backbone frame, and the results are more or less in the branchlets".
The so-called "big branches" grow from the young branches, so when the young trees are still very small, the branches on the trunk are the key parts to form the backbone frame by pulling apart the angle. When pruning, you should leave what should be cut and what should be left according to the condition of the tree.
Those who stay, let them open their angles and grow in a direction that is conducive to lighting, ventilation and tree potential balance.
After the young trees are pruned, the branches left on the trees will not only form the skeleton of the big trees in the future, but also be the backbone connecting the roots and fruiting branches, and play a role as a link for nutrient transportation.
Therefore, in the next two or three years, it will still be the key "cultivation" object, and try to make it grow in the direction of thinning trees that is conducive to lighting and ventilation.
2. Create a prototype trim
Winter pruning of young persimmon trees plays a role in cultivating skeletons and is also the key to supporting trees in the future.
Therefore, in the growth stage of young trees, redundant lateral branches and long branches should be cut off in winter, so that the whole plant has a general frame shape from a distance, and it is beneficial to lighting and ventilation to see the balance of the tree body at close range.
Second, pruning of adult fruit trees
Persimmon marks "adulthood" when it begins to bear fruit. At this time, pruning and pruning of young trees still have something in common. However, with the increase of annual rings, the plants will grow taller and taller, the branches will become more and more vigorous, and the annual winter pruning workload will gradually increase.
1. Dwarf pruning
Persimmon tree is a big tree with deep roots. Growing every year will inevitably cause the tree to be too high and difficult to pick. Therefore, if you grow in a place where the machine is inconvenient to pick, you should dwarf and prune in winter.
The pruning method is as follows: firstly, the growing trunk is appropriately shortened, then the excessively high skeleton branches are appropriately shortened, and finally, protective materials are coated on the affected mouth.
Trim shape
When persimmon grows up, if it is not reshaped, it will often form a flourishing and uneven scene. This will not only cause unnecessary waste of nutrition, but also affect the beauty of trees and the ventilation of orchards.
Therefore, when pruning in winter, we should cut off branches that are too high and too long and affect the beauty of the tree according to the situation of the tree.
3. Lighting and pruning
There is a folk proverb: "Small trees bear fruit with branches, while big trees bear fruit with scenery". In other words, the small trees that bear fruit should rely on many branches, and the big trees that bear fruit should rely on lighting and ventilation.
Accordingly, when pruning the strong stems and strong branches of large persimmon trees, not only the weak branches, but also the dense cross branches and overlapping branches should be trimmed to make them evenly exposed to light and ventilated.
4. Disease prevention and pruning
Pruning persimmon trees in winter is a "clean-up" to rot Xin Chen, leave the weak and the strong, and prevent diseases.
In winter pruning every year, people first cut off the weak branches and dead branches of parasitic germs and burn them.
It is also the process of disinfection and sterilization that naturally plays a very good role in preventing and treating diseases, so that persimmon trees are less troubled by many diseases and grow well.