Fruit tree pruning method based on branch-leaf-root synchronous growth

Abstract

The invention belongs to a fruit tree cultivation technology, in particular to a fruit tree pruning method based on branch-leaf-root synchronous growth, which is suitable for a fruit tree with at least three main branches. Different from a traditional strong-removing and strong-remaining method, the method adopts a weak-removing and strong-remaining strategy, and synchronous growth of branches, leaves and roots is realized through the following steps: firstly, performing head removing treatment on a main branch I, reserving 75-85% of length, selectively reserving vigorous branches of more than 1m, and forming inverted branches; in the second year, girdling the inverted branches to promote flower bud formation; after the fruits are harvested in the third year, the fruiting branches are cut off, and the second main branch is subjected to the same treatment; in the fourth year, the first main branches grow new branches again, and the process is repeated. According to the method, the main branches are trimmed and updated in turn, so that continuous growth and fruiting of the trees are kept, the yield and the fruit quality are improved, meanwhile, the influence on the environment is reduced, and the method has important economic and ecological values.

Description

Technical Field

[0001] The invention belongs to fruit tree cultivation technology, in particular to a fruit tree pruning method based on branch-leaf-root synchronous growth. Background Art

[0002] In traditional fruit tree pruning practices, there is a common practice of "removing the strong and keeping the weak". This practice is based on the theory of weak branches promoting flowers, which believes that pruning can promote the formation of flower buds and increase the fruiting rate. Specifically, by removing or inhibiting the growth of strong branches, the occupancy of nutrients in the plant body by these branches can be reduced, so that the remaining weak branches can obtain more nutrients, which in turn promotes the formation of flower buds and the development of fruits. This method can balance the tree vigor to a certain extent, make the nutrient distribution of fruit trees more even, and improve the overall fruiting rate. However, this pruning method also has some defects, especially after long-term application, it may have an adverse effect on the overall health and life of fruit trees.

[0003] First, the "remove the strong and keep the weak" pruning method may lead to insufficient light inside the crown, because strong branches are usually located on the periphery of the crown and can receive more sunlight. When these branches are removed, the weak branches inside can grow, but their photosynthesis efficiency is lower than that of strong branches. This practice is against nature and will inevitably lead to a weakening of tree growth.

[0004] Secondly, continuous pruning of "removing the strong and retaining the weak" may disrupt the natural growth balance of trees. After millions of years of natural selection and evolution, trees have formed a self-regulating mechanism. The presence of strong branches helps trees grow towards the light and expand the area of ​​photosynthesis. Excessive removal of strong branches may weaken this self-regulating ability, which in turn leads to a weakening of tree growth.

[0005] Furthermore, this pruning method will lead to restricted root growth. The above-ground and underground parts of trees are interconnected, and this connection is called the "crown-root relationship" in botany. The shape and size of the crown will affect the distribution and growth of the root system, because the crown is the main part of the plant for photosynthesis, and the organic matter it produces will be transported to the roots through the tree's conductive tissues, promoting the growth and development of the root system. Conversely, the water and minerals absorbed by the roots from the soil will also be transported to the crown through the conductive tissues, supporting the growth of leaves and the development of fruits. When the strong branches of the crown are removed, the corresponding roots will implement a retraction strategy, reducing nutrient supply to adapt to the new crown shape and size. Continuous "removing the strong and keeping the weak" will inevitably lead to root system degradation, commonly known as "holding the roots."

[0006] Finally, in order to maintain high yields, the current practice of "removing the strong and retaining the weak" often requires the input of large amounts of fertilizer and water. This is because the photosynthesis efficiency of weak branches is low and more nutrients are needed to support their growth and fruiting. However, this practice may lead to soil degradation and environmental pollution, while also increasing production costs. At the same time, the roots of fruit trees have been facing large amounts of fertilizer and water for a long time, and have lost environmental stress, resulting in increased dependence of the roots of fruit trees, reducing their ability to naturally absorb nutrients and water, and the roots will gradually degenerate, thus affecting the long-term health and productivity of fruit trees.

[0007] The lifespan of trees in nature can be as long as hundreds or thousands of years, but why do artificial fruit trees lose their vitality in 20-30 years? The applicant believes that the pruning method of "removing the strong and retaining the weak" is to blame, and it is time to re-examine it and explore more scientific and reasonable pruning methods to achieve the health, longevity and high yield of fruit trees. Summary of the invention

[0008] In order to overcome the defects of the existing fruit tree pruning methods, the present invention adopts the opposite approach, by retaining and cultivating strong branches, promoting the overall growth potential of trees, enhancing the stress resistance of trees, thereby extending the life of trees and improving the fruit yield and quality. To this end, the technical solution adopted by the present invention is: A fruit tree pruning method based on synchronous growth of branches, leaves and roots, no matter old trees or new seedlings, includes at least three main branches, which are respectively called main branch one, main branch two and main branch three. Different from the prior art, it includes the following steps: ① Remove the top of the main branch, leaving 75%-85% of the total length of the main branch. When the main branch has branches longer than 1 meter, leave one branch every 18-25cm and cut off the rest. The pruning principle is to "remove the weak and keep the strong". Then shape all the remaining vigorous branches from the roots to form upside-down branches and let them grow freely. ②In early March of the second year, gird both sides of the buds on the drooping branches on the main branch 1. After the tissue at the first girdling heals, gird the second time at the first girdling; treat the main branch 2 according to the method of step ①; ③ In the third year, the girdled branch 1 begins to bear fruit. After the fruit is harvested in autumn, the branch is completely removed from the root; main branch 3 is treated according to step ①; main branch 2 is treated according to step ②; ④ In the fourth year, new branches will be pulled out from the main branch. When the new branches reach more than 1 meter, the main branch will be re-cultivated, shaped and released according to the method in step ①; and this cycle will be repeated.

[0009] Furthermore, the shaping adopts a branching device, which is formed by bending iron wire or steel wire, and includes a plurality of branching units in a linear array, each of the branching units includes a left vertical segment, an S-shaped segment connected to the left vertical segment, a right vertical segment connected to the S-shaped segment, and a horizontal segment connected to the right vertical segment; the horizontal segment of each branching unit is connected to the left vertical segment of the adjacent branching unit.

[0010] Furthermore, the horizontal section and the S-shaped section form a left opening and a right opening, the left vertical section and the S-shaped section form an upper open end and a lower closed end communicated with the right opening; the right vertical section and the S-shaped section form a lower open end and an upper closed end communicated with the left opening; the left opening, the right opening, the upper open end and the lower open end allow fruit tree branches to pass through, and the lower closed end and the upper closed end restrict fruit tree branches from passing through.

[0011] Further, the upper open end is narrower than the lower closed end, and the lower open end is narrower than the upper closed end.

[0012] Furthermore, the left opening and the right opening have the same width.

[0013] Furthermore, the opening widths of the upper open end and the lower open end are equal.

[0014] Furthermore, the left vertical section or the right vertical section of the branch unit located at both ends is extended to form an extension section, and the extension section is bent in any direction into a "7" shape, a "U" shape, an inverted "V" shape, a "C" shape, a hook shape or a ring structure as needed.

[0015] Furthermore, the branch bend device is located as a whole below the main branch of the fruit tree to be shaped, and the extension section at one end is fixedly connected to the proximal end of the main trunk of the fruit tree or the main branch of the fruit tree by a tether, a cable tie, a thin wire or a rubber band, and the extension section at the other end is fixedly connected to the distal end of the main branch of the fruit tree or a wooden stake anchored in the ground by a tether, a cable tie, a thin wire or a rubber band.

[0016] Furthermore, two or more branching devices are fixedly connected end to end to form a longer branching device.

[0017] Furthermore, the opening widths of the upper open end and the lower open end are narrowed or closed as needed after the fruit tree branches penetrate.

[0018] Compared with the prior art, the beneficial technical effects of the present invention are mainly reflected in the following aspects: 1. Improve photosynthesis efficiency: By retaining strong branches, the pruning method of the present invention can make full use of the light conditions outside the crown and improve the overall photosynthesis efficiency. The retention of strong branches helps to expand the photosynthesis area, thereby increasing the ability of trees to produce organic matter.

[0019] 2. Promote healthy root growth: The present invention adopts the principle of "removing the weak and retaining the strong" to avoid the root system degradation problem caused by excessive removal of strong branches. The presence of strong branches helps promote the healthy growth of the root system because they can provide more organic matter to the root system, thereby enhancing the vitality and absorption capacity of the root system.

[0020] 3. Prolong the life of fruit trees: The pruning method of the present invention helps to prolong the life of fruit trees by maintaining the natural growth balance of trees. It avoids premature aging and death of trees caused by long-term "removing the strong and retaining the weak" pruning, allowing fruit trees to maintain productivity for a longer time.

[0021] 4. Improve fruit quality and yield: Since the pruning method of the present invention can promote the overall health and growth of trees, it can improve the quality and yield of fruits. The retention and reasonable pruning of strong branches help to form more flower buds, thereby increasing the fruiting rate, and due to the improvement of photosynthesis efficiency, the fruit can obtain more nutrients and the quality is improved.

[0022] 5. Reduce environmental burden and production costs: The pruning method of the present invention reduces the dependence on large amounts of fertilizer and water, thereby reducing the burden on the soil and the environment, reducing the use of fertilizers and water resources, reducing production costs, and also reducing the soil degradation and environmental pollution problems that may be caused thereby.

[0023] 6. Enhanced stress resistance: By retaining strong branches, the pruning method of the present invention enhances the resistance of fruit trees to environmental stresses, such as drought, pests and diseases, because strong branches usually have stronger growth potential and recovery ability.

[0024] 7. Achieve long-term high yield and high quality of fruit trees: The pruning method of the present invention can achieve a tree that is vigorous and never gets old, no good or bad years, and increased yields every year. Bags are not put on the tree, and there is no need to stack pads or sticks when removing bags. There is no need to feed too much fertilizer. The tree is very strong and the branches, leaves and roots grow synchronously. In summary, the fruit tree pruning method of the present invention achieves the synchronous growth of the branches, leaves and roots of fruit trees through the innovative principle of "removing the weak and retaining the strong", breaks the limitations of traditional pruning methods, provides new ideas and methods for the efficient cultivation of fruit trees, has significant economic and ecological benefits, and will surely benefit all mankind. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of a state in which vigorous branches of the present invention are shaped from the root to form downwardly drooping branches.

[0026] Figure 2 The invention discloses a grand apple fruit-bearing scene 1 after the fruit tree pruning method of the invention.

[0027] Figure 3The invention discloses an apple fruit-bearing scene 2 after the fruit tree pruning method of the invention.

[0028] Figure 4 This is a real photo of the roots of an apple tree after the fruit tree pruning method of the present invention was used for 3 years.

[0029] Figure 5 It is a structural schematic diagram of the branching device of the present invention. DETAILED DESCRIPTION

[0030] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] A fruit tree pruning method based on synchronous growth of branches, leaves and roots, no matter whether it is an old tree or a new tree, includes at least three main branches, which are respectively called main branch one, main branch two and main branch three, and includes the following steps: ① Remove the top of the main branch, leaving 75%-85% of the total length of the main branch. When the main branch grows more than 1 meter, leave one branch every 18-25cm and cut off the rest. The pruning principle is to "remove the weak and keep the strong". Then shape all the remaining vigorous branches from the roots to form upside-down branches and let them grow freely. Figure 1 As shown; ②In early March of the second year, gird both sides of the buds on the drooping branches on the main branch 1. After the tissue at the first girdling heals, gird the second time at the first girdling; treat the main branch 2 according to the method of step ①; ③ In the third year, the girdled branch 1 begins to bear fruit. After the fruit is harvested in autumn, the branch is completely removed from the root; main branch 3 is treated according to step ①; main branch 2 is treated according to step ②; ④ In the fourth year, new branches will be pulled out from the main branch. When the new branches reach more than 1 meter, the main branch will be re-cultivated, shaped and released according to the method in step ①; and this cycle will be repeated.

[0032] The fruit tree pruning method of the present invention is based on a brand-new principle, that is, through a pruning strategy of "removing the weak and retaining the strong", the synchronous growth of branches, leaves and roots of fruit trees is promoted, thereby maintaining the health and productivity of the trees.

[0033] Branch selection and shaping: The present invention first decapitates the main branches, retaining 75%-85% of the total length of the main branches. The purpose of this is to reduce apical dominance and promote the growth of side branches. When branches longer than 1 meter are extracted from the main branches, one branch is left every 18-25 cm, and the rest are all cut off. This step is based on the principle of "removing the weak and retaining the strong", that is, retaining branches with vigorous growth and removing branches with weak growth potential. Such selective pruning helps to concentrate the nutrient supply of the tree and promote the remaining branches to grow more robustly. Subsequently, the remaining vigorous branches are shaped from the roots to form drooping branches with their heads facing downwards. This step is to utilize the effect of gravity to make the branches droop naturally, which is conducive to the formation of flower buds and the uniform distribution of fruits.

[0034] Ring cutting promotes the formation of flower buds: In early March of the second year, ring cutting is performed on both sides of the buds on the drooping branches. Ring cutting is a physical stimulation that can temporarily block the transport of nutrients and prompt the tree to form callus tissue above the incision, thereby promoting the formation of flower buds. After the tissue at the first ring cutting heals, a second ring cutting is performed at the first ring cutting. This treatment can further enhance the formation of flower buds.

[0035] Fruiting and renewal: In the third year, the ring-cut branches begin to bear fruit. After the fruit is harvested in autumn, the branch is completely removed from the root. This step is to renew the crown, remove the branches that have already borne fruit, and make room and nutrients for the growth of new branches. At the same time, repeat the above steps for other main branches to ensure the continuous renewal and growth of the tree.

[0036] Cyclic pruning: In the fourth year, new branches are taken out from the main branches. When the new branches reach more than 1 meter, they are pruned and shaped again according to the principle of "removing the weak and retaining the strong". This cyclical pruning method ensures the continuous growth and fruiting of the trees, while avoiding premature aging of the trees.

[0037] Based on the above principle, the fruit tree pruning method of the present invention aims to achieve the synchronous growth of branches, leaves and roots of fruit trees through reasonable branch selection, shaping and renewal, so as to maintain the health and productivity of trees. This method avoids the problems of insufficient light inside the crown, restricted root growth and premature aging of trees that may be caused by the traditional "remove the strong and keep the weak" pruning method. Figure 4 As shown, the fruit trees have strong and sturdy root systems, unlike the existing fruit trees whose roots are very weak and will even fall down with a push.

[0038] The invention also achieves an increase in yield year after year by adopting different pruning methods for the three main branches. The core of this method is to promote the continuous growth and fruiting of fruit trees through planned pruning, while preventing premature aging of trees.

[0039] Main branch rotation pruning: In the present invention, the three main branches are pruned in different years. The purpose of this is to ensure that at least one main branch is in a fruiting state every year, while the other main branches are in a growing or renewing state. This rotation pruning strategy can ensure that the tree has new branches to form flower buds and bear fruit every year, thereby achieving annual production increases.

[0040] Branch renewal: By renewing a main branch every year, that is, completely cutting it off after fruiting, the growth of new branches can be promoted. Because of their strong growth potential, new branches can better photosynthesize, thus providing more nutrients to the tree, supporting the tree's continued growth and fruiting.

[0041] Maximizing photosynthesis: Keeping strong branches and shaping them into drooping branches can help maximize the photosynthesis area. Drooping branches can better receive sunlight and improve the efficiency of photosynthesis, thereby producing more organic matter to support the growth and fruiting of trees. Figure 2-3 As shown, the fruits are piled up like a waterfall, which is spectacular.

[0042] Balance between the root system and the crown: Maintain the balance between the crown and the root system through reasonable pruning. The presence of strong branches helps promote the healthy growth of the root system because they can provide more organic matter to the root system, thereby enhancing the vitality and absorption capacity of the root system.

[0043] Prevent premature aging of trees: The traditional pruning method of "removing the strong and retaining the weak" may cause trees to age prematurely, but the pruning method of the present invention avoids this problem by retaining strong branches. Retaining strong branches helps maintain the growth of trees and prolong the life of trees, thereby achieving long-term stable yields.

[0044] Through the above principle, the fruit tree pruning method of the present invention realizes the fine management of the growth cycle of fruit trees, ensures the continuous productivity of trees, and thus achieves the effect of increasing production year by year. The implementation of this method not only improves the yield and quality of fruits, but also helps to maintain the health of fruit trees and prolong their economic life.

[0045] In order to better realize the branch shaping of the present invention, the present invention also provides a branching device, which is formed by bending iron wire or steel wire, and includes 10 branching units 1 in a linear array. For the convenience of display, the omission method is adopted, and only 5 branching units 1 are shown; each of the branching units 1 includes a left vertical segment 11, an S-shaped segment 12 connected to the left vertical segment 11, a right vertical segment 13 connected to the S-shaped segment 12, and a horizontal segment 14 connected to the right vertical segment 13; the horizontal segment 14 of each of the branching units 1 is connected to the left vertical segment 11 of the adjacent branching unit 1.

[0046] The horizontal section 14 and the S-shaped section 12 form a left opening 17 and a right opening 18, the left vertical section 11 and the S-shaped section 12 form an upper open end 15 and a lower closed end 16 communicating with the right opening 18; the right vertical section 13 and the S-shaped section 12 form a lower open end 19 and an upper closed end 20 communicating with the left opening 17; the left opening 17, the right opening 18, the upper open end 15 and the lower open end 19 allow fruit tree branches to pass through, and the lower closed end 16 and the upper closed end 20 restrict fruit tree branches from passing through. The upper open end 15 is narrower than the lower closed end 16, and the lower open end 19 is narrower than the upper closed end 20.

[0047] The branch bender is located as a whole below the main branch of the fruit tree to be shaped, and the extension section 2 at one end is fixedly connected to the proximal end of the main trunk or branch of the fruit tree by a tether, a cable tie, a thin wire or a rubber band, and the extension section 2 at the other end is fixedly connected to the distal end of the main branch of the fruit tree or a wooden stake anchored in the ground by a tether, a cable tie, a thin wire or a rubber band.

[0048] In another preferred embodiment, the left opening 17 and the right opening 18 are of equal width. The upper open end 15 and the lower open end 19 have equal opening widths. Equal width openings simplify the manufacturing process because there is no need to set different specifications or procedures for each opening, thereby improving production efficiency. Uniform dimensions reduce complexity in the manufacturing process and reduce manufacturing costs. During the manufacturing process, consistent dimensions reduce errors caused by different specifications and improve product consistency and reliability. For the end user, consistent width openings mean that the various parts of the branching device are functionally consistent, which simplifies the user's understanding and use.

[0049] In another preferred embodiment, the left vertical section 11 or the right vertical section 13 of the branch bend unit 1 at both ends is extended to form an extension section 2. The extension section 2 provides additional length so that the branch bend can be more firmly fixed to the fruit tree, whether by a tether, a cable tie, a thin wire or a rubber band. The extension section 2 allows the branch bend to adapt to trunks or branches of different thicknesses, thereby improving the versatility and applicability of the branch bend. Through the extension section 2, the branch bend can be more easily installed in the appropriate position of the fruit tree without the need for additional adjustments or tools. The extension section 2 can be appropriately bent or adjusted as needed to adapt to different installation environments and fruit tree growth conditions. If necessary, multiple branch bends can be connected together through the extension section 2 to cover longer branches or larger areas.

[0050] In another preferred embodiment, the extension section 2 can be bent into a "7" shape, a "U" shape, an inverted "V" shape, a "C" shape, a hook shape or a ring structure in any direction as needed. Different bending shapes can adapt to different fixing requirements, and can provide stable support whether it is at different positions of the trunk or at a fixed point on the ground. The plasticity of the extension section 2 allows the user to customize a personalized installation plan according to the specific layout and spatial conditions of the fruit trees. By forming a stable geometric shape, such as a "U" shape or a "C" shape, the extension section 2 can provide additional stability. The user can easily bend the extension section 2 into the desired shape according to actual conditions without the need for additional tools or complicated operations. Whether on young trees or adult fruit trees, the diversity of the extension section 2 can ensure the effective use of the branch splitter and adapt to fruit trees at different growth stages.

[0051] In another preferred embodiment, two or more branch benders are fixedly connected end to end to form a longer branch bender. Depending on the size of the fruit tree and the length of the branches, the number of connected branch benders can be flexibly selected to meet different application requirements. The end-to-end connection design simplifies the installation process, and the user can quickly expand the length of the branch bender as needed without redesigning or adjusting the fixing structure. Whether in a small family orchard or a large commercial orchard, this expandable branch bender design can provide an effective branch shaping solution. Through the modular connection method, branch benders can be purchased and used according to actual needs, avoiding unnecessary investment and improving cost-effectiveness.

[0052] In another preferred embodiment, the opening width of the upper open end 15 and the lower open end 19 is narrowed or closed as needed after the fruit tree branches are inserted. The user is allowed to adjust the opening width according to the specific thickness and shaping requirements of the branches, so as to achieve more accurate branch shaping and fixation. By narrowing or closing the opening, the branches can be fixed more tightly, the shaking of the branches caused by wind or other external forces can be reduced, and the stability of the overall structure can be improved. Adjusting the opening width after the branches are inserted can avoid unnecessary damage to the branches during the shaping process, which helps to maintain the healthy growth of the fruit trees. This design enables the branch splitter to adapt to branches of different diameters, improving the versatility and flexibility of the branch splitter. The user can easily adjust the opening width according to the different growth stages and shaping effects of the fruit trees without replacing the branch splitter or using additional tools. By accurately controlling the position and shape of the branches, the light and ventilation conditions of the fruit can be optimized, which helps to improve the quality and yield of the fruit. In orchard management, the branch splitter can be quickly adjusted to adapt to different branches, which can improve the efficiency of gardening work.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A fruit tree pruning method based on synchronous growth of branches, leaves and roots, no matter old trees or new seedlings, including at least 3 main branches, namely main branch 1, main branch 2 and main branch 3, characterized in that: The steps include: ① Remove the top of the main branch, leaving 75%-85% of the total length of the main branch. When the main branch has branches longer than 1 meter, leave one branch every 18-25cm and cut off the rest. The pruning principle is to "remove the weak and keep the strong". Then shape all the remaining vigorous branches from the roots to form upside-down branches and let them grow freely. ②In early March of the second year, gird both sides of the buds on the drooping branches on the main branch 1. After the tissue at the first girdling heals, gird the second time at the first girdling; treat the main branch 2 according to the method of step ①; ③ In the third year, the girdled branch 1 begins to bear fruit. After the fruit is harvested in autumn, the branch is completely removed from the root; main branch 3 is treated according to step ①; main branch 2 is treated according to step ②; ④ In the fourth year, new branches will be pulled out from the main branch. When the new branches reach more than 1 meter, the main branch will be re-cultivated, shaped and released according to the method in step ①; and this cycle will be repeated.

2. A fruit tree pruning method based on branch-leaf-root synchronous growth according to claim 1, characterized in that: The shaping adopts a branching device, which is formed by bending iron wire or steel wire and comprises a plurality of branching units (1) in a linear array, each of the branching units (1) comprising a left vertical section (11), an S-shaped section (12) connected to the left vertical section (11), a right vertical section (13) connected to the S-shaped section (12), and a horizontal section (14) connected to the right vertical section (13); the horizontal section (14) of each branching unit (1) is connected to the left vertical section (11) of the adjacent branching unit (1).

3. A fruit tree pruning method based on branch-leaf-root synchronous growth according to claim 2, characterized in that: The horizontal section (14) and the S-shaped section (12) form a left opening (17) and a right opening (18); the left vertical section (11) and the S-shaped section (12) form an upper open end (15) and a lower closed end (16) which communicate with the right opening (18); the right vertical section (13) and the S-shaped section (12) form a lower open end (19) and an upper closed end (20) which communicate with the left opening (17); the left opening (17), the right opening (18), the upper open end (15) and the lower open end (19) allow fruit tree branches to pass through, and the lower closed end (16) and the upper closed end (20) restrict the fruit tree branches from passing through.

4. A fruit tree pruning method based on branch-leaf-root synchronous growth according to claim 3, characterized in that: The upper open end (15) is narrower than the lower closed end (16), and the lower open end (19) is narrower than the upper closed end (20).

5. A fruit tree pruning method based on branch-leaf-root synchronous growth according to claim 3, characterized in that: The left opening (17) and the right opening (18) have the same width.

6. A fruit tree pruning method based on branch-leaf-root synchronous growth according to claim 3, characterized in that: The opening widths of the upper open end (15) and the lower open end (19) are equal.

7. A fruit tree pruning method based on branch-leaf-root synchronous growth according to claim 2, characterized in that: The left vertical section (11) or the right vertical section (13) of the branch unit (1) at both ends is extended to form an extension section (2), and the extension section (2) is bent in any direction as required to form a "7" shape, a "U" shape, an inverted "V" shape, a "C" shape, a hook shape or a ring structure.

8. A fruit tree pruning method based on branch-leaf-root synchronous growth according to claim 7, characterized in that: The fruit tree branch shaper is located as a whole below the main branch of the fruit tree to be shaped, and the extension section (2) at one end is fixedly connected to the main trunk of the fruit tree or the proximal end of the main branch of the fruit tree by means of a tether, a tie, a thin wire or a rubber band, and the extension section (2) at the other end is fixedly connected to the distal end of the main branch of the fruit tree or a wooden stake anchored in the ground by means of a tether, a tie, a thin wire or a rubber band.

9. A fruit tree pruning method based on branch-leaf-root synchronous growth according to claim 7, characterized in that: Two or more fruit tree branch shapers are fixedly connected end to end to form a longer fruit tree branch shaper.

10. A fruit tree pruning method based on branch-leaf-root synchronous growth according to claim 3, 4 or 6, characterized in that: The opening widths of the upper open end (15) and the lower open end (19) are narrowed or closed as required after the fruit tree branches penetrate.

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