Fruit farmers know that when fruit trees are grown, pruning is very important. However, many fruit farmers only pay attention to the winter shears of fruit trees. They always ignore or despise the summer shear work of fruit trees. They feel that summer shears are only for ventilation and light transmission, and there is no big effect. But in fact, if the summer shears are not done well, it will cause the tree shape of the fruit trees and saplings to be disordered, the main and the subordinates are not divided, the upper strength is weak or the lower strength is weak. So what is the role of fruit tree summer shears? How to trim?
First, the role of fruit tree summer shear
Summer shears can make the fruit branches full, the canopy is not closed, and the photosynthetic products are more, which encourages the fruit trees to thrive. By reducing the strong branch nutrients and increasing the weak branch nutrients to balance the tree potential, the purpose of the dry branch ratio and the master-slave relationship is reasonable. In fact, sapling summer shear is an important factor in determining the early fruit and fruit quality of fruit trees.
Second, the technology of young trees in summer shears
The saplings of summer saplings have the effect of increasing branches and expanding crowns, promoting photosynthetic products of fruit trees, and regulating the application and storage of photosynthetic products.
1. Before germination, buds are budded at the position where the branches need to be taken, germination is promoted, branches are full, and branches are promoted.
2. When engraving, the buds on both sides of the branches should be budded above the buds. If the buds are on the back of the branches, they should be engraved under the buds so that the buds on the back are not germinated and erect, reducing the consumption of nutrients.
3. After the buds are germinated, remove the unnecessary useless branches in time to prevent the canopy from closing. During the growth of new shoots, the heart is topped many times, promoting branching, inhibiting growth, and controlling competition, so that the whole branches are full and strong, and the branches and leaves have good illumination, so that more photosynthesis products can be produced in the growing season.
Third, the specific method of fruit tree summer shear
1. Straighten the center to make it grow vigorously and maintain its absolute superiority;
2, the center is dry and the side branches are small, it is necessary to raise the branches of the side branches, increase the supply of nutrients in the side branches, and promote their growth;
3. If the side branches are slightly larger, the side branches should be flattened, even pulled down, the branches should be lowered, and a few erect branches, larger branches, and more branches should be removed from the branches, and the wounds should be scratched under the side branches to reduce nutrients. Supply, inhibit vegetative growth, and transform it into reproductive growth;
4, the dry branches are more reasonable, the side branches do not promote uncontrolled, natural growth;
5, auxiliary branches should be lychee, twisted branches, take branches, stilts, fall branches, ring cutting, ring stripping, so that they can store more nutrients as soon as possible, for the results of the next year, the foundation of good results.
6. For saplings that have no need to increase the number of branches in the past, more than 70% of the photosynthesis products are supplied to the new shoots, and the growth of the new shoots and the new shoots stop. The whole tree will store a large amount of nutrients for the leap year. , the result of flowering.
7. For the result tree of the year, according to the result, the size of the canopy, and the strength of the tree, a part of the photosynthetic product is adjusted to supply fruit growth and development. That is to say, some branches with strong vegetative growth should be properly controlled.
The above is the role and specific method of fruit tree summer shear, and the fruit tree summer shear can regulate the growth and development of trunk, main branch, side branch and auxiliary branch. However, when pruning, pay attention to the number of buds. If you can smear, don't slash the branches. If you pick the heart, you will not be short-cut, and you must ensure the fullness of the canopy branches.
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