Grafting device and method for pomelo cultivation and breeding

Abstract

The invention discloses a grafting device and method for pomelo cultivation and breeding in the technical field of fruit tree planting, the grafting device comprises a first fixing ring, a second fixing ring and a plurality of connecting rods, the top ends of the connecting rods are fixedly connected to the bottom end of the second fixing ring, and the bottom ends of the connecting rods are fixedly connected to the top end of the first fixing ring; adjusting assemblies for adjusting the inner diameters of the first fixing ring and the second fixing ring are arranged in the first fixing ring and the second fixing ring; the top end of the first fixing ring is fixedly connected with a stabilizing sleeve, and a stabilizing assembly used for dynamically adjusting the fixing force on the grafting position based on the external wind power is arranged in the stabilizing sleeve. Based on the change of wind power, pressure is applied to the grafting position in a self-adaptive mode, and the possibility that the grafting success rate is low due to the fact that the contact surface gap of the scion and the stock is increased when the wind power is large is reduced.

Description

Technical Field

[0001] This invention relates to the field of fruit tree planting technology, specifically to a grafting device and method for pomelo cultivation and breeding. Background Technology

[0002] Grafting is an important agricultural technique commonly used in cultivation and breeding. By grafting scions of superior varieties onto suitable rootstocks, it is possible to improve varieties, increase yields, improve fruit quality, and enhance the plant's disease resistance and stress tolerance. Grafting of pomelo trees is usually done in spring or autumn, when the temperature is suitable, which is conducive to the healing of grafting wounds and the growth of new tissues. Specifically: Spring grafting is generally carried out in early to mid-March, when the pomelo tree is in the early stages of spring shoot growth or before the shoots sprout, resulting in a relatively high survival rate. Autumn grafting can be done from mid-September to early October, when the temperature is moderate, the trees are growing vigorously, and recovery is rapid after grafting. Common grafting methods for pomelo trees include single-bud cleft grafting, small-bud side grafting, and single-bud side grafting.

[0003] In the prior art, patent CN219812581U discloses a grafting device for cultivation and breeding, including a first fixing ring, a second fixing ring movably connected to the upper surface of the first fixing ring, rubber pads fixedly connected to the upper surfaces of both the first and second fixing rings, protruding clips fixedly connected to both sides of the inside of the first fixing ring, grooves fixedly connected to both sides of the inside of the second fixing ring, a connecting block fixedly connected to the upper surface of the first fixing ring, a limiting groove formed inside the connecting block, and a limiting bolt movably connected to the upper surface of the limiting groove. The protruding clips and grooves facilitate the secure fixing of the grafting part of the pomelo branch, while also facilitating disassembly and reducing labor intensity. The limiting bolts and limiting grooves allow for size adjustment according to the pomelo branch. Furthermore, the nutrient solution injection hole and connecting plug facilitate the injection of nutrient solution into the grafting part, improving the grafting success rate.

[0004] In existing technologies, after grafting, if strong winds occur subsequently, the scion is prone to swaying, which can increase the gap between the scion and rootstock, affecting the nutrient supply to the scion and further impacting the success rate of grafting. While the aforementioned device can fix the grafted portion, it relies on the convex-and-groove structure of the first and second fixing rings for physical fixation. However, it does not consider the micro-friction between the scion and rootstock under wind conditions. Strong winds can cause high-frequency vibrations between the scion and rootstock, exacerbating the widening of the gap at the contact surface. The rigid fixing structure lacks a buffering mechanism and cannot absorb vibration energy, making the grafted seedling susceptible to breakage at the healing site. Simple physical fixation cannot solve the problem of dynamic external forces.

[0005] Therefore, the present invention proposes a grafting device and method for pomelo cultivation and breeding to solve the above problems. Summary of the Invention

[0006] To address the aforementioned issues, this invention provides a grafting device and method for pomelo cultivation and breeding. Based on wind variations, it adaptively applies pressure to the grafting site, reducing the likelihood of lower grafting success rates due to increased gaps between the scion and rootstock when wind is strong.

[0007] To achieve the above objectives, the technical solution of the present invention is as follows: A grafting device for pomelo cultivation and breeding includes a fixing component for fixing the scion and rootstock; the fixing component is provided with a plurality of adjusting components for adjusting the diameter of the fixing component; a stabilizing sleeve is fixedly connected to the top of the fixing component, and the stabilizing sleeve is provided with a stabilizing component for dynamically adjusting the fixing force on the grafting point based on the external wind force.

[0008] Basic principle of the solution: When a grafted pomelo sapling encounters strong winds, the scion and rootstock are first indirectly integrated by a fixing component, reducing the relative movement between them and increasing the grafting success rate. At the same time, the stabilizing component senses the wind force and adjusts its movement accordingly, changing the pressure on the grafting point. This further improves the stability between the contact surfaces during strong winds, thereby increasing the grafting success rate.

[0009] The above-mentioned solution has the following beneficial effects: By linking the stabilizing components with real-time wind changes, the device can autonomously sense the external wind intensity and convert it into gradient pressure on the grafting contact surface. When the wind intensifies, the internal actuator of the device deforms or displaces, applying dynamically increasing pressure to the healing interface between the scion and rootstock, actively counteracting the vibration separation tendency caused by the wind, maintaining the tight adhesion of the cambium cells, and reducing the risk of widening gaps at the contact surface from a mechanical perspective.

[0010] Furthermore, the fixing assembly includes a first fixing ring, a second fixing ring, and several connecting rods. The top ends of the connecting rods are all fixedly connected to the bottom end of the second fixing ring, and the bottom ends of the connecting rods are all fixedly connected to the top end of the first fixing ring. The top end of the first fixing ring is fixedly connected to the stabilizing sleeve.

[0011] The adjusting components are respectively disposed in the first fixed ring and the second fixed ring, and the adjusting components are used to adjust the inner diameter of the first fixed ring and the second fixed ring.

[0012] Beneficial effects: The combination of the first and second fixing rings and the connecting rod forms a three-dimensional support structure for the scion and rootstock. The first and second fixing rings respectively secure the rootstock and scion, which are connected as a whole by the connecting rod, reducing relative movement under external forces and providing dual-point support for the grafting point. The adjustment component allows independent adjustment of the inner diameter of the two rings to accommodate rootstocks and scions of different thicknesses, improving versatility. Simultaneously, the first fixing ring connects to the stabilizing sleeve, providing a solid foundation for the stabilizing component, ensuring precise force transmission, optimizing the force transmission path, distributing stress at the grafting point, and reducing the risk of loosening and damage.

[0013] Furthermore, the stabilizing component includes several pressurizing chambers arranged in a ring array inside the stabilizing sleeve. Each pressurizing chamber is connected to an air intake channel that extends to the surface of the stabilizing sleeve. A sliding groove is formed on the bottom wall of the pressurizing chamber, and a compression block is slidably fitted inside the sliding groove. An annular groove is formed on the inner wall of the stabilizing sleeve, and several arc-shaped stabilizing blocks are arranged in a ring array inside the annular groove. Each arc-shaped stabilizing block is slidably fitted with the inner wall of the annular groove. Several springs are fixedly connected to the side of each arc-shaped stabilizing block closest to the outer surface of the stabilizing sleeve, and the ends of the springs furthest from the arc-shaped stabilizing blocks are fixedly connected to the inner wall of the annular groove.

[0014] Beneficial effects: The air intake channel introduces external wind into the pressurization chamber, and the airflow increases with the wind force to form a gradient air pressure, which pushes the extrusion block to move along the sliding groove. The linkage design of the extrusion block and the arc-shaped stabilizing block converts the linear wind pressure into a circumferentially distributed extrusion force within the annular groove. When the arc-shaped stabilizing block extends and retracts inward, it forms a uniformly increasing circumferential pressure on the grafting point. The stronger the wind force, the stronger the constraint force, effectively suppressing the scion's swaying.

[0015] Meanwhile, the elastic deformation of the spring absorbs the impact of instantaneous strong winds and maintains the base pressure of the stabilizer block through rebound force. When the wind weakens, the spring pulls the arc-shaped stabilizer block back to its original position, avoiding continuous high pressure from hindering callus growth, and achieving a dynamic balance of "increasing pressure in strong winds and maintaining pressure in weak winds", thus taking into account both stability and cell activity.

[0016] Furthermore, the top of the arc-shaped stabilizing block and the bottom of the extrusion block are both wedge-shaped structures, and are respectively set as the first wedge and the second wedge, with the first wedge and the second wedge always in contact; the height of the left side of the arc-shaped stabilizing block is less than the height of the other side.

[0017] Beneficial effects: The wedge structure achieves mechanical conversion through inclined plane transmission: when the wind pushes the extrusion block to slide vertically, the inclined contact between the second wedge and the first wedge converts the vertical thrust into the radial expansion force of the arc-shaped stabilizing block, making the pressure output more precise; the low height design on the left side of the arc-shaped stabilizing block forms a progressive pressure gradient, which preferentially triggers unilateral expansion when the wind force increases, which not only responds quickly to the sudden increase in wind force, but also avoids sudden pressure damage to callus tissue, achieving a smooth transition of mechanical adaptation.

[0018] Furthermore, both sides of the bottom of the extrusion block are fixedly connected to the adjacent extrusion blocks.

[0019] Beneficial effects: The rigid connection between the extrusion blocks forms a ring linkage structure to achieve synchronous pressure: When the wind drives any extrusion block to slide, the adjacent blocks are synchronously displaced through the bottom connection structure, ensuring that all arc-shaped stable blocks expand uniformly in the circumference and eliminating uneven local stress; at the same time, the linkage frame improves the overall structural rigidity, avoids mechanical failure caused by single-point stress overload, and enhances the fatigue resistance and action consistency of the device under continuous strong winds.

[0020] Furthermore, the diameter of the intake passage at one end near the outer surface of the stabilizing sleeve is larger than that at the other end.

[0021] Beneficial effects: The tapered intake channel improves wind energy capture efficiency through inlet diameter expansion design, accelerates the change in airflow velocity within the intake channel, and enables the pressurization chamber to establish gradient air pressure more quickly; at the same time, the outlet diameter reduction produces a throttling effect, suppresses the impact of strong wind overload, balances the pressure increase under different wind speeds, and ensures the stability and controllability of dynamic pressurization.

[0022] Furthermore, each of the pressure chamber bottom walls has an exhaust channel that connects to the outside of the stabilizing sleeve, and the diameter of the exhaust channel is smaller than the diameter of the sliding groove.

[0023] Beneficial effects: The exhaust channel forms a bidirectional airflow circulation system. When the wind weakens, the negative pressure effect accelerates the release of residual air pressure in the pressurization chamber, prompting the arc-shaped stabilizing block to quickly reset and preventing excessive pressure from damaging the callus tissue. Simultaneously, it balances the internal and external air pressure difference, preventing foreign objects from backflowing and blocking the air intake channel, ensuring the responsiveness and long-term reliability of dynamic adjustment. The diameter difference between the exhaust channel and the sliding groove forms a pressure-releasing mechanism: the small-diameter exhaust slows down the air pressure release rate, ensuring the arc-shaped stabilizing block slowly resets when the wind suddenly drops, preventing pressure changes from causing secondary misalignment of the scion and rootstock. At the same time, it restricts unidirectional airflow, maintaining the base air pressure in the pressurization chamber, enhancing the device's continuous response to intermittent gusts, and improving the consistency and stability of dynamic adjustment.

[0024] Furthermore, each of the arc-shaped stabilizing blocks has a buffer layer on the side closest to each other.

[0025] Beneficial effects: The buffer layer absorbs the rigid collision between the arc-shaped stabilizing block and the grafting surface through elastic deformation, preventing mechanical damage to the callus tissue; at the same time, it enhances the friction of the contact surface, avoids lateral slippage and misalignment, and balances protection and stability under dynamic pressure, promoting natural adhesion of interface cells.

[0026] Furthermore, all adjustment components are iris structures.

[0027] Beneficial effects: The adjustment components of the iris structure achieve stepless scaling through multi-blade linkage, adaptively matching rootstocks and scions of different diameters, avoiding the limitations of the step-like adjustment of traditional ring clamps; when the blades are closed, the circumferential pressure is evenly distributed, eliminating cambium damage caused by local compression, while retaining a small amount of elastic deformation space, buffering vibration impact in wind disturbances, taking into account both static fixing accuracy and dynamic anti-disturbance tolerance, significantly improving the environmental adaptability and ease of operation of the device.

[0028] Furthermore, a grafting method for pomelo cultivation and breeding includes the following specific steps:

[0029] Step 1: Place the scion with the prismatic side facing up and the flat side facing down, close to your index finger. Make a 45° angled cut 1-1.5 cm below the bud. Then, turn the flat side of the scion upward and peel away the bark from near the bud. Turn the scion to the side with the bud facing up and cut it off about 0.2 cm above the bud. Place it in a basin filled with clean water.

[0030] Step two: 6-8 cm above the ground, select one side of the rootstock and bevele it at a 45° angle to remove the upper part. Then, below the bevel, make a longitudinal cut along the junction of the bark and xylem.

[0031] Step 3: Using the iris structure on the first and second fixing rings, fix the first and second fixing rings to the rootstock and scion respectively, while ensuring that the connection between the rootstock and scion is located in the annular groove inside the stabilizing sleeve. As the wind force changes, the resultant force on the compression block changes accordingly. When the wind force increases, the downward resultant force on the compression block increases, thereby pressing the second wedge surface against the first wedge surface and forming relative sliding. The arc-shaped stabilizing blocks move closer to each other, increasing the fixing force on the grafting point. When the wind force decreases, the arc-shaped stabilizing blocks are reset by the spring.

[0032] Beneficial effects: 1. The 45° double-sided cutting design of the scion (step one) and the longitudinal cutting process of the rootstock bark (step two) form a standardized double-bevel interface, maximizing the contact area between the cambium layers of the scion and rootstock. Soaking the scion in water maintains cell activity, and the separation of the bark and wood parts of the rootstock at the beveled cut reduces grafting resistance, ensures rapid alignment of the cambium layers, and shortens the callus initiation cycle.

[0033] 2. The iris structure fixing ring (step 3) achieves millimeter-level adaptive matching of the diameter of the rootstock and stalk, and its uniform circumferential pressure avoids the local stress concentration of traditional binding; when the wind force increases, the extrusion block linkage mechanism converts the horizontal wind force into radial extrusion force through the wedge surface transmission, drives the arc-shaped stabilizing block to shrink synchronously, forming a dynamic clamping force that is positively correlated with the wind force, and compensates for the micro displacement of the rootstock and stalk caused by the wind force in real time.

[0034] 3. When the wind weakens, the spring reset system allows the arc-shaped stabilizing block to release pressure, preventing continuous high pressure from hindering vascular bundle differentiation; the buffer layer and elastic reset structure absorb impact vibration during mechanical pressure application, protecting newly formed callus tissue from shear damage, while maintaining appropriate interfacial compression pressure to promote directional growth of vascular tissue.

[0035] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0036] Figure 1 This is an overall front view of an embodiment of the grafting device for pomelo cultivation and breeding of the present invention;

[0037] Figure 2 This is a top view of the bottom of the first fixing ring in an embodiment of the grafting device for pomelo cultivation and breeding of the present invention;

[0038] Figure 3 A half-sectional view of the stabilizing sleeve of an embodiment of the grafting device for pomelo cultivation and breeding of the present invention;

[0039] Figure 4 This is an enlarged view of part A of an embodiment of the grafting device for pomelo cultivation and breeding of the present invention.

[0040] The reference numerals in the accompanying drawings include: 1. First fixing ring; 2. Connecting rod; 3. Stabilizing sleeve; 4. Second fixing ring; 5. Iris structure; 6. Adjusting knob; 7. Pressurization chamber; 8. Air intake channel; 9. Exhaust channel; 10. Extrusion block; 11. Arc-shaped stabilizing block; 12. Spring. Detailed Implementation

[0041] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0043] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0044] The following detailed description illustrates the specific implementation method:

[0045] Example 1:

[0046] As attached Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown: A grafting device for pomelo cultivation and breeding includes a first fixing ring 1, a second fixing ring 4, and several connecting rods 2. The top ends of the connecting rods 2 are screwed to the bottom ends of the second fixing ring 4, and the bottom ends of the connecting rods 2 are screwed to the top ends of the first fixing ring 1. Adjustment components for adjusting the inner diameters of the first fixing ring 1 and the second fixing ring 4 are provided inside each of the two fixing rings. The adjustment components are preferably iris structures 5 (composed of several arc-shaped blades and a connecting rod mechanism), and each iris structure 5 is equipped with an adjustment knob 6, which can be used to lock the structure.

[0047] The top of the first fixing ring 1 is fixedly connected to a stabilizing sleeve 3, and the stabilizing sleeve 3 is equipped with a stabilizing component for dynamically adjusting the fixing force at the grafting point based on the magnitude of the external wind force.

[0048] Specifically, the stabilizing component includes a plurality of pressurizing chambers 7 arranged in a ring array inside the stabilizing sleeve 3. Each pressurizing chamber 7 is connected to an air intake channel 8, and the air intake channel 8 extends to the surface of the stabilizing sleeve 3. A sliding groove is formed on the bottom wall of the pressurizing chamber 7, and a pressing block 10 is slidably fitted inside the sliding groove. An annular groove is formed on the inner wall of the stabilizing sleeve 3, and a plurality of arc-shaped stabilizing blocks 11 are arranged in a ring array inside the annular groove. Each arc-shaped stabilizing block 11 is slidably fitted with the inner wall of the annular groove. A plurality of springs 12 are adhered to the side of each arc-shaped stabilizing block 11 near the outer surface of the stabilizing sleeve 3, and the ends of the springs 12 away from the arc-shaped stabilizing blocks 11 are fixedly connected to the inner wall of the annular groove. Furthermore, to facilitate observation of the grafting site of the pomelo seedling, the stabilizing sleeve 3 can preferably be made of a transparent material, such as transparent plastic.

[0049] To ensure the stable sliding (closing) of the arc-shaped stabilizing block 11 by converting wind force into a stable, adaptive fixing force at the joint, both the top of the arc-shaped stabilizing block 11 and the bottom of the compression block 10 are wedge-shaped structures, respectively designated as a first wedge and a second wedge, with the first and second wedges always in contact. The left side of the arc-shaped stabilizing block 11 is shorter than the other side. Thus, when the wind force pushes the compression block 10 to slide vertically, the inclined contact between the second wedge and the first wedge converts the vertical thrust into the radial expansion force of the arc-shaped stabilizing block 11, resulting in more precise pressure output.

[0050] Since the wind direction is often variable after grafting pomelo seedlings, if the compression block 10 can only move independently, it is easy to cause uneven stress at the grafting point, which will affect the growth of the contact surface and reduce the grafting success rate. Therefore, the bottom sides of the compression block 10 are fixedly connected to the adjacent compression blocks 10. The rigid connection between the compression blocks 10 forms a ring linkage structure to achieve synchronous pressure. When the wind drives any compression block 10 to slide, the adjacent blocks are synchronously displaced through the bottom connection structure, ensuring that all arc-shaped stable blocks 11 expand evenly in the circumferential direction and eliminating local uneven stress.

[0051] Furthermore, the diameter of the end of the air intake channel 8 closest to the outer surface of the stabilizing sleeve 3 is larger than that of the other end, accelerating the change in airflow velocity within the air intake channel 8. This allows the pressurizing chamber 7 to establish a gradient pressure more quickly. Simultaneously, the reduced outlet diameter creates a throttling effect, suppressing the impact of strong wind overload, balancing the pressure increase under different wind speeds, ensuring the stability and controllability of dynamic pressurization, and guaranteeing that the extrusion block 10 moves stably downward under wind force. Moreover, the bottom wall of the pressurizing chamber 7 has exhaust channels 9 connecting to the outside of the stabilizing sleeve 3. The diameter of the exhaust channels 9 is smaller than that of the sliding groove, creating a stable airflow circulation within the pressurizing chamber 7. The small-diameter exhaust slows down the pressure release rate, ensuring that the arc-shaped stabilizing block 11 slowly resets when the wind force drops suddenly, preventing secondary misalignment of the scion and rootstock due to sudden pressure changes. At the same time, it restricts unidirectional airflow, maintaining the base pressure of the pressurizing chamber 7, enhancing the device's continuous response to intermittent gusts, and improving the consistency and stability of dynamic adjustment.

[0052] Each of the arc-shaped stabilizing blocks 11 has a buffer layer on one side close to the other to prevent mechanical damage to the callus tissue; at the same time, it enhances the friction of the contact surface, avoids lateral slippage and misalignment, and balances protection and stability during dynamic pressure application, promoting natural adhesion of interface cells.

[0053] The specific implementation method is as follows: A scion of Shatang pomelo with a diameter of 12mm is grafted onto a sour pomelo rootstock with a diameter of 15mm. The grafting environment is in the windy season of spring with an average wind speed of 4-5.

[0054] By rotating the adjustment knobs 6 through the iris adjustment components within the first fixing ring 1 and the second fixing ring 4, the inner diameter of the first fixing ring 1 (rootstock end) is reduced from the initial 25mm to 15mm, and the inner diameter of the second fixing ring 4 (scion end) is reduced from 20mm to 12mm. The 16 arc-shaped leaves of the iris structure 5 are evenly closed, and there are no wrinkles or indentations on the surface of the rootstock and scion, with a cambium alignment error ≤0.3mm.

[0055] After aligning the rootstock and scion cuts, the graft union is inserted into the annular groove of the stabilizing sleeve 3. At this point, the buffer layer (silicone material, 2mm thick) of the arc-shaped stabilizing block 11 is in close contact with the rootstock and scion contact surfaces, and the initial pressure is provided by the preload of the spring 12 (approximately 0.5 N / cm). 2 ).

[0056] When the wind speed increases to level 6, the airflow enters the pressurization chamber 7 through the inlet channel 8 (inlet diameter 3mm, outlet diameter 1.5mm). The increased airflow velocity raises the internal pressure to 1.2kPa, pushing the extrusion block 10 to slide 3mm towards the center along the sliding groove. The second wedge surface at the bottom of the extrusion block 10 creates inclined extrusion with the first wedge surface of the arc-shaped stabilizing block 11, converting the vertical displacement into radial pressure. This causes the arc-shaped stabilizing block 11 to expand towards the central axis of the stabilizing sleeve 3, increasing the pressure of the buffer layer to 1.8N / cm². 2 Simultaneously, the linkage frame of adjacent compression blocks 10 ensures the synchronous displacement of the six arc-shaped stabilizing blocks 11, achieving a pressure distribution uniformity of 90%. When the wind speed drops to level 2, the exhaust channel 9 (0.8 mm in diameter) slowly releases the air pressure from the pressurization chamber 7, the spring 12 pulls the arc-shaped stabilizing blocks 11 back to their original position, and the pressure in the buffer layer returns to 0.7 N / cm². 2 To avoid prolonged high pressure that could hinder callus growth.

[0057] Example 2:

[0058] As attached Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a grafting method for pomelo cultivation and breeding is described, with the following specific steps:

[0059] Step 1: Place the scion with the prismatic side facing up and the flat side facing down, close to your index finger. Make a 45° angled cut 1-1.5 cm below the bud. Then, turn the flat side of the scion upward and peel away the bark from near the bud. Turn the scion to the side with the bud facing up and cut it off about 0.2 cm above the bud. Place it in a basin filled with clean water.

[0060] Step two: 6-8 cm above the ground, select one side of the rootstock and bevele it at a 45° angle to remove the upper part. Then, below the bevel, make a longitudinal cut along the junction of the bark and xylem.

[0061] Step 3: Using the iris structure 5 on the first fixing ring 1 and the second fixing ring 4, the first fixing ring 1 and the second fixing ring 4 are fixed to the rootstock and the scion respectively, while the connection between the rootstock and the scion is located in the annular groove inside the stabilizing sleeve 3. As the wind force changes, the resultant force on the pressing block 10 changes accordingly. When the wind force increases, the downward resultant force on the pressing block 10 increases, thereby the second wedge surface presses against the first wedge surface and forms relative sliding. The arc-shaped stabilizing blocks 11 move closer to each other, increasing the fixing force on the grafting point. When the wind force decreases, the arc-shaped stabilizing blocks 11 are reset by the spring 12.

[0062] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A grafting device for pomelo cultivation and breeding, characterized in that, It includes a fixing component for fixing the scion and rootstock; the fixing component is provided with several adjustment components for adjusting the diameter of the fixing component; a stabilizing sleeve (3) is fixedly connected to the top of the fixing component, and the stabilizing sleeve (3) is provided with a stabilizing component for dynamically adjusting the fixing force at the grafting point based on the magnitude of the external wind force.

2. The grafting device for pomelo cultivation and breeding according to claim 1, characterized in that: The fixing assembly includes a first fixing ring (1), a second fixing ring (4), and several connecting rods (2). The top ends of the connecting rods (2) are all fixedly connected to the bottom ends of the second fixing ring (4), and the bottom ends of the connecting rods (2) are all fixedly connected to the top ends of the first fixing ring (1). The top end of the first fixing ring (1) is fixedly connected to the stabilizing sleeve (3). The adjustment components are respectively set inside the first fixed ring (1) and the second fixed ring (4), and the adjustment components are used to adjust the inner diameter of the first fixed ring (1) and the second fixed ring (4).

3. The grafting device for pomelo cultivation and breeding according to claim 2, characterized in that: The stabilizing component includes several pressurizing chambers (7) arranged in an annular array inside the stabilizing sleeve (3). Each pressurizing chamber (7) is connected to an air intake channel (8) and the air intake channel (8) extends to the surface of the stabilizing sleeve (3). A sliding groove is opened on the bottom wall of the pressurizing chamber (7). A compression block (10) is slidably fitted inside the sliding groove. An annular groove is opened on the inner wall of the stabilizing sleeve (3). Several arc-shaped stabilizing blocks (11) are arranged in an annular array inside the annular groove. Each arc-shaped stabilizing block (11) is slidably fitted with the inner wall of the annular groove. Several springs (12) are fixedly connected to the side of the arc-shaped stabilizing block (11) near the outer surface of the stabilizing sleeve (3). The end of the spring (12) away from the arc-shaped stabilizing block (11) is fixedly connected to the inner wall of the annular groove.

4. The grafting device for pomelo cultivation and breeding according to claim 3, characterized in that: The top of the arc-shaped stabilizing block (11) and the bottom of the extrusion block (10) are both wedge-shaped structures and are respectively set as the first wedge and the second wedge. The first wedge and the second wedge are always in contact. The height of the left side of the arc-shaped stabilizing block (11) is less than the height of the other side.

5. The grafting device for pomelo cultivation and breeding according to claim 4, characterized in that: Both sides of the bottom of the extrusion block (10) are fixedly connected to the adjacent extrusion block (10).

6. The grafting device for pomelo cultivation and breeding according to claim 5, characterized in that: The diameter of one end of the air intake channel (8) near the outer surface of the stabilizing sleeve (3) is larger than that of the other end.

7. The grafting device for pomelo cultivation and breeding according to claim 6, characterized in that: The bottom wall of the pressurized chamber (7) is provided with an exhaust channel (9) that connects to the outside of the stabilizing sleeve (3). The diameter of the exhaust channel (9) is smaller than the diameter of the sliding groove.

8. The grafting device for pomelo cultivation and breeding according to claim 7, characterized in that: Each of the arc-shaped stabilizing blocks (11) has a buffer layer on one side that is close to the other.

9. The grafting device for pomelo cultivation and breeding according to claim 8, characterized in that: All adjustment components are iris structures (5).

10. A grafting method for pomelo cultivation and breeding, comprising the grafting device for pomelo cultivation and breeding according to any one of claims 1-9, characterized in that, The specific steps are as follows: Step 1: Place the scion with the prismatic side facing up and the flat side facing down, close to your index finger. Make a 45° angled cut 1-1.5 cm below the bud. Then, turn the flat side of the scion upward and peel away the bark from near the bud. Turn the scion to the side with the bud facing up and cut it off about 0.2 cm above the bud. Place it in a basin filled with clean water. Step two: 6-8 cm above the ground, select one side of the rootstock and bevele it at a 45° angle to remove the upper part. Then, below the bevel, make a longitudinal cut along the junction of the bark and xylem. Step 3: The first fixing ring (1) and the second fixing ring (4) are fixed to the rootstock and the scion respectively through the iris structure (5) on the first fixing ring (1) and the second fixing ring (4), and the connection between the rootstock and the scion is located in the annular groove in the stabilizing sleeve (3). As the wind force changes, the resultant force on the squeezing block (10) changes accordingly. When the wind force increases, the downward resultant force on the squeezing block (10) increases, so that the second wedge surface presses on the first wedge surface and forms relative sliding. The arc-shaped stabilizing blocks (11) move closer to each other, increasing the fixing force on the grafting point. When the wind force decreases, the arc-shaped stabilizing blocks (11) are reset by the spring (12).

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