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Ten principles of pruning of fruit trees

Issuing time:2017-12-25 00:00

1, lifelong contradiction. Is the growth of contradictions and results, it runs through the whole life cycle of fruit trees, is weak, the number of results. The genetic rule of all measures, not the young growth, is achieved by weakening growth.


2, two power. Light and water, light is energy, determine the fruit tree nutrition and accumulation level; water is the lifeblood, determine the growth force of fruit trees. As the saying goes "good water tree, good light path and good results" is the truth, fruit tree pruning is the first consideration of soil conditions and conditions of scenery. In order to achieve the best effect, the individual and population structure of the fruit tree is only consistent with the ecological conditions.


3, two advantages. That is, the vertical and top advantages are the upward and the top in the growth of fruit trees, which is the principle that all fruit trees can grow up and grow. In the process of fruit tree pruning and pruning, adjusting the balance relationship between the upper and lower part of the crown and the growth of the inside and outside is essentially the adjustment of the two advantages.


4, two angles. The framework branches angle and branch angle of backbone group. The angle is to adjust the light path and the waterway, adjust the two advantages to achieve the "key" of the growth and the coordination of the results. Low angle growth from strong to weak stability; on the contrary, the angle from small to big, from weak to strong growth. The most effective measures for the early results of the young trees are the light cutting and the angle opening. The old tree is updated by using the back and raising the angle.


5, two parts. That is, the upper and underground parts of the earth are the crown and root. These two parts are closely related. In the annual growth cycle of fruit trees, the two parts are in the state of dynamic equilibrium. The more the crown is cut and pruned to a certain extent, the more powerful the crown will be to restore the crown. The cut is the branch, the root is the root, the root is destroyed, it will inevitably affect the growth of the crown.


6 and two roads. It is the two path of water and organic nutrition. The water and inorganic salts absorbed by roots are transported through the xylem conduit to the crown, and the organic nutrition produced by the leaves is transported to the roots through the screen tube of the cortex. Take measures to increase the fruit setting rate of girdling, promote flower bud formation and "(xylem injury injured in the sinews or bones") the tree flourishing part of weak slow reason, is because the normal function of the two road damage and achieve the desired purpose.


7, two centers. For the aerial part, there are two centers in the allocation of organic nutrition during the growth stage of fruit trees: the first is the transportation to the top of the most active new shoots for growth; the two is the transport to the result part, for fruit growth. Nutrition biased growth center transfer, will cause excessive growth; nutrition bias results transfer center (too much fruit), will cause the tree is too weak.  One of the main tasks of pruning is to adjust the distribution center of organic nutrition, so that the growth and results are coordinated and suitable.


8 and two growth stages. The growth of the new shoots in the annual cycle is generally divided into two stages: spring shoot and autumn shoot. Spring shoots, also known as shoot tips, play a decisive role in the early nutritional level of fruit trees. They belong to accumulated branches. Autumn shoots grow out after the rainy season, which is not conducive to fruit growth and flower bud differentiation. They belong to consumptive branches. For young trees, we can make full use of autumn shoots to increase the crown of trees with light shear and long stay. For the big trees, how to control and weaken the growth of autumn shoots is one of the tasks of pruning.


9, two methods. That is the short cut and thinning, is to cut the branches or thinning from base. This is the two basic technique in the pruning of fruit trees. Short section is divided into light, medium, heavy and very heavy cut, the local pruning branches have potential to help. For the same branch, the heavier the short cut, the stronger the local help, the smaller the growth of the branch. The less the short cut, the weaker the local help, the greater the growth of the branch. The thinning shear has a potential effect on the above section, but it can promote the following part of the cut. Only with the proper combination of these two methods can we achieve the ideal pruning effect.


10, summer and winter with. That is, the combination of winter pruning and summer pruning. For the young tree and the result tree, on a winter pruning pruning in spring are often too heavy, too much, the night; if the winter light cut, summer with wiping, picking, stripping and twisting, tension, moment and other practices, will accelerate the formation of the crown, early flower, early results. The greater the pruning of the fruit trees after germination, the heavier the "Qi" of the tree body. So, summer pruning should minimize losses and leaves to cure Wang, corrosion potential, and early results to early flower.


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