A side-deep fertilizer applicator for orchards

Abstract

A side-deep fertilizer applicator for orchards is disclosed, relating to the field of agricultural machinery and particularly suitable for mechanized fertilization operations in orchards. This applicator can directly apply fertilizer into the deep soil layer near the root system of fruit trees and can adapt to the requirements of fertilization operations with varying row widths. The applicator mainly comprises a tractor, a suspension mechanism, and a side-deep fertilizer applicator; the side-deep fertilizer applicator is the main component of the applicator, and through a telescopic transmission mechanism, a telescopic fertilizer delivery device, and a ditching and mixing device, it applies fertilizer into the deep soil layer near the root system of fruit trees. This utility model patent discloses a side-deep fertilizer applicator for orchards, particularly suitable for mechanized fertilization operations in orchards, and better able to meet the requirements of side-deep fertilization operations with varying row widths, providing a new piece of equipment for mechanized fertilization in orchards in my country.

Description

Technical Field

[0001] This utility model patent discloses an orchard side-deep fertilization machine, which relates to the field of agricultural machinery and is particularly suitable for orchard mechanized fertilization operations. Background Technology

[0002] China's fruit industry boasts a diverse range of products and a large total output, making fruit the third largest agricultural industry in China after grains and vegetables. The total orchard area and total fruit production have consistently ranked first in the world for many years. However, fruit farmers have long relied on years of planting experience for fertilization and management, neglecting proper fertilization methods, leading to significant fertilizer waste and environmental pollution. For example, farmers often spread fertilizer on the soil surface or dig shallow trenches to apply it. This method results in shallow fertilization depth and fertilizer being too far from the tree roots, hindering root absorption and reducing fertilizer utilization.

[0003] In recent years, side-deep fertilization technology has emerged as a novel precision fertilization method. It allows fertilizer to be applied directly to the deep soil layers near the roots, improving fertilizer utilization efficiency, reducing fertilizer loss and environmental pollution, and promoting healthy crop root growth. Currently, most orchard fertilizer applicators are row-based, meaning the applicator is installed directly behind the machine. This keeps the fertilizer away from the tree roots, preventing side-deep fertilization. Some applicators are offset, distributing fertilizer closer to the tree roots compared to row-based applicators, but still cannot deliver fertilizer directly to the roots, hindering precise side-deep fertilization. For example, patent CN220755423U mentions an offset orchard fertilizer applicator. This design offsets the fertilizer cylinder, bringing the fertilizer closer to the tree, but because the cylinder occupies space, it cannot get closer to the base of the tree, thus failing to achieve side-deep fertilization.

[0004] To address the aforementioned issues, this utility model patent proposes an orchard side-deep fertilization machine. This machine can directly apply fertilizer into the deep soil layer near the root system of fruit trees and can adapt to the requirements of various row width fertilization operations according to the differences in orchard row width, providing a new type of equipment for mechanized fertilization in orchards in my country. Summary of the Invention

[0005] The purpose of this utility model patent is to disclose an orchard side-deep fertilization machine that can directly apply fertilizer into the deep soil layer near the root system of fruit trees, and can adapt to the requirements of fertilization operations with different row widths according to the differences in orchard row widths, providing a new equipment for mechanized fertilization in orchards in my country.

[0006] The technical problem this utility model patent aims to solve is: how to ensure that the side-deep fertilization machine can adapt to the needs of orchards with various row widths while ensuring side-deep fertilization.

[0007] To solve the above technical problems, this utility model patent provides the following technical solution:

[0008] A side-deep fertilization machine for orchards, characterized in that it includes at least a side-deep fertilization device 3 and a tractor 1; the side-deep fertilization device 3 is connected to the tractor 1 through a suspension mechanism 2.

[0009] The side-deep fertilization device 3 includes at least a frame 4, a ditching and fertilizer mixing device 5, an intermediate gearbox 6, a telescopic transmission mechanism 7, a fertilizer box 8, and a telescopic fertilizer delivery device 9.

[0010] The frame 4 includes at least a main frame 10 and a telescopic frame 11; the main frame 10 and the telescopic frame 11 are nested, the main frame 10 provides a moving track for the telescopic frame 11, and the main frame 10 and the telescopic frame 11 are respectively hinged to the telescopic hydraulic cylinder 18. Under the telescopic action of the telescopic hydraulic cylinder 18, the telescopic frame 11 extends and retracts laterally relative to the main frame 10.

[0011] The trenching and fertilizer mixing device 5 is fixed to one side of the telescopic frame 11 and extends and retracts laterally with the telescopic frame 11. It includes at least a trenching and fertilizer mixing gearbox 12, a hollow fertilizer inlet pipe 13, and a trenching and fertilizer mixing device 14. The trenching and fertilizer mixing gearbox 12 has a pair of meshing bevel gears that drive the trenching and fertilizer mixing device 14 to rotate, thereby realizing trenching and fertilizer mixing. The hollow fertilizer inlet pipe 13 rotates with the rotation of the bevel gears in the trenching and fertilizer mixing gearbox 12, and its upper opening is the fertilizer inlet 15. The trenching and fertilizer mixing device 14 is a spiral trencher that combines trenching and fertilizer mixing functions. Its main shaft is a hollow fertilizer inlet pipe 16, which is used to discharge fertilizer downward along the shaft. The lower opening of the hollow fertilizer inlet pipe 16 is the fertilizer outlet 17. The outer periphery of the hollow fertilizer inlet pipe 16 has trenching spiral blades for cutting soil and mixing fertilizer.

[0012] The intermediate gearbox 6 is fixed to the center of the main frame 10 and contains a pair of meshing bevel gears that transmit the power from the rear output shaft of the tractor 1 to the telescopic transmission mechanism 7.

[0013] The telescopic transmission mechanism 7 includes at least a telescopic hydraulic cylinder 18 and a telescopic transmission shaft 19. The two ends of the telescopic hydraulic cylinder 18 are hinged to the main frame 10 and the telescopic frame 11, respectively, driving the telescopic frame 11 to extend and retract laterally relative to the main frame 10. The telescopic transmission shaft 19 consists of an inner shaft and an outer shaft. The inner shaft can slide axially inside the outer shaft. One side of the telescopic transmission shaft 19 is connected to the intermediate gearbox 6, and the other side is connected to the ditching fertilizer mixer gearbox 12. The extension length of the telescopic hydraulic cylinder 18 is adjusted according to the row width difference of different orchards. The telescopic frame 11 extends and retracts laterally relative to the main frame 10, and the telescopic transmission shaft 19 continuously provides power at different extension and retraction distances.

[0014] The fertilizer box 8 is located above the side-deep fertilization device 3 and provides fertilizer.

[0015] The telescopic fertilizer delivery device 9 includes at least a spiral fertilizer dispenser 20, a fixed fertilizer delivery pipe 21, and a telescopic fertilizer delivery pipe 22. The spiral fertilizer dispenser 20 horizontally traverses the bottom of the entire fertilizer tank 8, extending into the interior of the fixed fertilizer delivery pipe 21 and the telescopic fertilizer delivery pipe 22, and is coaxial with both. The fixed fertilizer delivery pipe 21 and the telescopic fertilizer delivery pipe 22 have nested overlapping sections. One end of the fixed fertilizer delivery pipe 21 is fixedly connected to the fertilizer tank 8, and the other end is nested in the inner wall of the telescopic fertilizer delivery pipe 22. The telescopic fertilizer delivery pipe 22 is an "L"-shaped pipe, with one end nested with the outer wall of the fixed fertilizer delivery pipe 21, and the other end extending into the fertilizer inlet 15 of the hollow lower fertilizer pipe 13. The telescopic fertilizer delivery pipe 22 moves synchronously with the fertilizer inlet 15 and is relative to the fixed fertilizer delivery pipe 22. The telescopic fertilizer delivery pipe 21 extends and retracts; when the telescopic fertilizer delivery pipe 22 is retracted, fertilizer is transported by the spiral fertilizer dispenser 20 to the "L"-shaped corner of the telescopic fertilizer delivery pipe 22 and falls into the fertilizer inlet 15 of the hollow lower fertilizer pipe 13; when the telescopic fertilizer delivery pipe 22 is extended, there is no spiral section inside the telescopic fertilizer delivery pipe 22, and the fertilizer is transported to the "L"-shaped corner of the telescopic fertilizer delivery pipe 22 by the push of subsequent fertilizer and its own fluidity and falls into the fertilizer inlet 15 of the hollow lower fertilizer pipe 13; when the telescopic fertilizer delivery pipe 22 is extended to its longest extent, there is still a nested overlapping section with the fixed fertilizer delivery pipe 21; according to the row width difference of different orchards, the telescopic fertilizer delivery pipe 22 extends to different lengths relative to the fixed fertilizer delivery pipe 21 to ensure that the telescopic fertilizer delivery device 9 continuously provides fertilizer to the ditching and mixing fertilizer device 5.

[0016] Depending on the difference in orchard row width, the telescopic frame 11 in the side-deep fertilization device 3 extends a suitable distance relative to the main frame 10, and the trenching and fertilizer mixing device 5, which is fixed to the telescopic frame 11, applies fertilizer into the deep soil layer near the fruit tree roots, adapting to the requirements of fertilization operations with various row widths.

[0017] The lifting and lowering of the side-deep fertilization device 3 is achieved through the suspension mechanism 2 of the tractor 1, which is used to adjust the fertilization depth. In the non-operational state, the side-deep fertilization device 3 is lifted to a certain height above the ground through the suspension mechanism 2 to facilitate road passage.

[0018] The trenching and fertilizer mixing device 5 is powered by a telescopic transmission mechanism 7, which ensures that power is continuously supplied to the trenching and fertilizer mixing device 5 during dynamic extension and retraction.

[0019] A side-deep fertilizer applicator for orchards operates on the following principle: This utility model patent describes a side-deep fertilizer applicator for orchards that can directly apply fertilizer into the deep soil layer near the root system of fruit trees. Furthermore, it can adapt to the requirements of various row width fertilization operations based on differences in orchard row widths. The specific process and working principle are described below:

[0020] When operating this fertilizer applicator, the side-deep fertilization device should be connected to the tractor in advance via the suspension mechanism. Raise the side-deep fertilization device to a certain height off the ground and fill the fertilizer tank with fertilizer. Control the extension length of the telescopic hydraulic cylinder according to the actual row width of the orchard, causing the telescopic frame to extend and retract relative to the main frame. This allows the ditching and fertilizer-mixing device, which is fixed to the telescopic frame, to reach the appropriate position. The telescopic transmission mechanism continuously provides power to the ditching and fertilizer-mixing device during dynamic extension and retraction, while the telescopic fertilizer delivery device continuously delivers fertilizer to the device, ensuring that the fertilizer penetrates deep into the soil near the fruit tree roots. Start the tractor's output shaft to transmit power to the ditching and fertilizer-mixing device via the telescopic transmission mechanism, causing the device to rotate. The tractor's suspension mechanism then controls the side-deep fertilization device to descend to the appropriate ditching depth. Simultaneously, the hydraulic motor drives the auger fertilizer dispenser, transporting fertilizer to the inlet via a telescopic fertilizer delivery device. The fertilizer then falls freely through a hollow fertilizer lowering pipe and conduit to the outlet, where it is ejected by centrifugal force and applied to the bottom of the trench. There, it is further mixed with the entire soil layer by the lifting action of the auger's spiral blades, achieving fertilizer-to-soil mixing. The tractor drives the side-deep fertilization device forward, and the spiral blades scrape soil from the forward direction back into the trench, completing the side-deep fertilization operation.

[0021] Beneficial technical effects:

[0022] ① Fertilizer applicators can directly apply fertilizer into the deep soil near the roots of fruit trees, improving fertilizer utilization.

[0023] ② It can simultaneously meet the needs of various wide-row orchard side-deep fertilization operations.

[0024] Reference numerals in the attached diagram: 1. Tractor 2. Suspension mechanism 3. Side-deep fertilization device 4. Frame 5. Ditching and fertilizer mixing device 6. Intermediate gearbox 7. Telescopic transmission mechanism 8. Fertilizer box 9. Telescopic fertilizer delivery device 10. Main frame 11. Telescopic frame 12. Ditching and fertilizer mixing gearbox 13. Hollow fertilizer inlet pipe 14. Ditching and fertilizer mixing device 15. Fertilizer inlet 16. Hollow fertilizer inlet pipe 17. Fertilizer outlet 18. Telescopic hydraulic cylinder 19. Telescopic drive shaft 20. Spiral fertilizer discharge device 21. Fixed fertilizer delivery pipe 22. Telescopic fertilizer delivery pipe. Attached Figure Description

[0025] Figure 1 This is an axonometric view of an orchard side-deep fertilizer applicator;

[0026] Figure 2 This is a side view of an orchard side-deep fertilizer applicator;

[0027] Figure 3 This is a structural diagram of the side-deep fertilization device of an orchard side-deep fertilization machine;

[0028] Figure 4 This is a structural diagram of the frame of a side-deep fertilization device for an orchard side-deep fertilization machine;

[0029] Figure 5 This is a structural diagram of the trenching and fertilizer mixing device of a side-deep fertilization machine for orchards;

[0030] Figure 6 This is a structural diagram of the telescopic transmission mechanism of the side-deep fertilization device of an orchard side-deep fertilization machine;

[0031] Figure 7 This is a diagram showing the retractable structure of a telescopic fertilizer delivery unit in the side-deep fertilization device of an orchard side-deep fertilization machine.

[0032] Figure 8 This is a diagram showing the extended structure of the telescopic fertilizer delivery unit of a side-deep fertilizer applicator for orchards.

[0033] Figure 9 This is a magnified view of part A of the telescopic fertilizer delivery device of the side-deep fertilization device of an orchard side-deep fertilization machine;

[0034] Figure 10 This is a retracted structural diagram of a side-deep fertilization device unit of an orchard side-deep fertilization machine;

[0035] Figure 11 This is a structural diagram of the extended side-deep fertilization unit of an orchard side-deep fertilization machine. Detailed Implementation

[0036] The specific implementation structure of an orchard side-deep fertilizer applicator is as follows:

[0037] like Figure 1 , 2 As shown, an orchard side-deep fertilization machine is characterized by comprising at least a side-deep fertilization device 3 and a tractor 1; the side-deep fertilization device 3 is connected to the tractor 1 via a suspension mechanism 2.

[0038] like Figure 3 As shown, the side-deep fertilization device 3 includes at least a frame 4, a ditching and fertilizer mixing device 5, an intermediate gearbox 6, a telescopic transmission mechanism 7, a fertilizer box 8, and a telescopic fertilizer delivery device 9.

[0039] like Figure 4 As shown, the frame 4 includes at least a main frame 10 and a telescopic frame 11; the main frame 10 and the telescopic frame 11 are nested structures, the main frame 10 provides a moving track for the telescopic frame 11, and the main frame 10 and the telescopic frame 11 are respectively hinged to the telescopic hydraulic cylinder 18. Under the telescopic action of the telescopic hydraulic cylinder 18, the telescopic frame 11 extends and retracts laterally relative to the main frame 10.

[0040] like Figure 5 As shown, the ditching and fertilizer mixing device 5 is fixed to one side of the telescopic frame 11 and extends and retracts laterally with the telescopic frame 11. It includes at least a ditching and fertilizer mixing gearbox 12, a hollow fertilizer inlet pipe 13, and a ditching and fertilizer mixing device 14. The ditching and fertilizer mixing gearbox 12 has a pair of meshing bevel gears that drive the ditching and fertilizer mixing device 14 to rotate, thus realizing ditching and fertilizer mixing. The hollow fertilizer inlet pipe 13 rotates with the rotation of the bevel gears in the ditching and fertilizer mixing gearbox 12, and its upper opening is the fertilizer inlet 15. The ditching and fertilizer mixing device 14 is a spiral ditching device that combines ditching and fertilizer mixing functions. Its main shaft is a hollow fertilizer inlet pipe 16, which is used to discharge fertilizer downward along the shaft. The lower opening of the hollow fertilizer inlet pipe 16 is the fertilizer outlet 17. The outer periphery of the hollow fertilizer inlet pipe 16 has ditching spiral blades for cutting soil and mixing fertilizer.

[0041] like Figure 3 , 6 As shown, the intermediate gearbox 6 is fixed to the center of the main frame 10 and contains a pair of meshing bevel gears that transmit the power from the rear output shaft of the tractor 1 to the telescopic transmission mechanism 7.

[0042] like Figure 3 , 6 As shown, the telescopic transmission mechanism 7 includes at least a telescopic hydraulic cylinder 18 and a telescopic transmission shaft 19. The two ends of the telescopic hydraulic cylinder 18 are hinged to the main frame 10 and the telescopic frame 11, respectively, driving the telescopic frame 11 to extend and retract laterally relative to the main frame 10. The telescopic transmission shaft 19 consists of an inner shaft and an outer shaft. The inner shaft can slide axially inside the outer shaft. One side of the telescopic transmission shaft 19 is connected to the intermediate gearbox 6, and the other side is connected to the ditching fertilizer mixer gearbox 12. According to the row width difference of different orchards, the extension length of the telescopic hydraulic cylinder 18 is adjusted, the telescopic frame 11 extends and retracts laterally relative to the main frame 10, and the telescopic transmission shaft 19 continuously provides power at different extension and retraction distances.

[0043] like Figure 1 , 3 As shown, the fertilizer box 8 is located above the side-deep fertilization device 3 and provides fertilizer.

[0044] like Figure 3 , 7As shown in Figures 8 and 9, the telescopic fertilizer delivery device 9 includes at least a spiral fertilizer dispenser 20, a fixed fertilizer delivery pipe 21, and a telescopic fertilizer delivery pipe 22. The spiral fertilizer dispenser 20 horizontally traverses the bottom of the entire fertilizer tank 8, extending into the interior of the fixed fertilizer delivery pipe 21 and the telescopic fertilizer delivery pipe 22, and is coaxial with both the fixed fertilizer delivery pipe 21 and the telescopic fertilizer delivery pipe 22. The fixed fertilizer delivery pipe 21 and the telescopic fertilizer delivery pipe 22 have nested overlapping sections. One end of the fixed fertilizer delivery pipe 21 is fixedly connected to the fertilizer tank 8, and the other end is nested in the inner wall of the telescopic fertilizer delivery pipe 22. The telescopic fertilizer delivery pipe 22 is an "L"-shaped pipe, with one end nested with the outer wall of the fixed fertilizer delivery pipe 21, and the other end extending into the fertilizer inlet 15 of the hollow lower fertilizer pipe 13. The telescopic fertilizer delivery pipe 22 moves synchronously with the fertilizer inlet 15 and is relative to the fixed fertilizer delivery pipe 21. The fixed fertilizer delivery pipe 21 extends and retracts; when the extended fertilizer delivery pipe 22 is retracted, fertilizer is transported by the spiral fertilizer dispenser 20 to the "L"-shaped corner of the extended fertilizer delivery pipe 22 and falls into the fertilizer inlet 15 of the hollow lower fertilizer pipe 13; when the extended fertilizer delivery pipe 22 is extended, there is no spiral section inside the extended fertilizer delivery pipe 22, and the fertilizer is transported to the "L"-shaped corner of the extended fertilizer delivery pipe 22 by the push of subsequent fertilizer and its own fluidity and falls into the fertilizer inlet 15 of the hollow lower fertilizer pipe 13; when the extended fertilizer delivery pipe 22 is at its longest extension, there is still a nested overlapping section with the fixed fertilizer delivery pipe 21; according to the row width difference of different orchards, the extended fertilizer delivery pipe 22 extends to different lengths relative to the fixed fertilizer delivery pipe 21 to ensure that the extended fertilizer delivery device 9 continuously provides fertilizer to the ditching and mixing fertilizer device 5.

[0045] like Figure 3 , 10 As shown in Figure 11, depending on the difference in orchard row width, the telescopic frame 11 in the side-deep fertilization device 3 extends a suitable distance relative to the main frame 10, and the trenching and fertilizer mixing device 5, which is fixedly connected to the telescopic frame 11, applies fertilizer into the deep soil layer near the fruit tree roots, adapting to the requirements of fertilization operations with various row widths.

[0046] like Figure 1 , 2 As shown, the lifting and lowering of the side-deep fertilization device 3 is achieved through the suspension mechanism 2 of the tractor 1, which is used to adjust the fertilization depth; in the non-operation state, the side-deep fertilization device 3 is lifted to a certain height above the ground through the suspension mechanism 2 to facilitate road passage.

[0047] like Figure 3 , 6 As shown, the trenching and fertilizer mixing device 5 is powered by a telescopic transmission mechanism 7, which ensures that the trenching and fertilizer mixing device 5 is continuously powered during dynamic extension and retraction.

[0048] Further explanation of the working principle of the orchard side-deep fertilization machine described in this utility model patent: The orchard side-deep fertilization machine described in this utility model patent can directly apply fertilizer into the deep soil layer near the root system of fruit trees, and can adapt to the requirements of various row width fertilization operations according to the differences in row width in the orchard. Its specific process and working principle are described as follows:

[0049] When operating this fertilizer applicator, the side-deep fertilization device should be connected to the tractor in advance via the suspension mechanism. Raise the side-deep fertilization device to a certain height off the ground and fill the fertilizer tank with fertilizer. Control the extension length of the telescopic hydraulic cylinder according to the actual row width of the orchard, causing the telescopic frame to extend and retract relative to the main frame. This allows the ditching and fertilizer-mixing device, which is fixed to the telescopic frame, to reach the appropriate position. The telescopic transmission mechanism continuously provides power to the ditching and fertilizer-mixing device during dynamic extension and retraction, while the telescopic fertilizer delivery device continuously delivers fertilizer to the device, ensuring that the fertilizer penetrates deep into the soil near the fruit tree roots. Start the tractor's output shaft to transmit power to the ditching and fertilizer-mixing device via the telescopic transmission mechanism, causing the device to rotate. The tractor's suspension mechanism then controls the side-deep fertilization device to descend to the appropriate ditching depth. Simultaneously, the hydraulic motor drives the auger fertilizer dispenser, transporting fertilizer to the inlet via a telescopic fertilizer delivery device. The fertilizer then falls freely through a hollow fertilizer lowering pipe and conduit to the outlet, where it is ejected by centrifugal force and applied to the bottom of the trench. There, it is further mixed with the entire soil layer by the lifting action of the auger's spiral blades, achieving fertilizer-to-soil mixing. The tractor drives the side-deep fertilization device forward, and the spiral blades scrape soil from the forward direction back into the trench, completing the side-deep fertilization operation.

Claims

1. A side-deep fertilization machine for orchards, characterized in that, It includes at least a side-deep fertilization device (3) and a tractor (1); the side-deep fertilization device (3) is connected to the tractor (1) via a suspension mechanism (2); The side-deep fertilization device (3) includes at least a frame (4), a ditching and fertilizer mixing device (5), an intermediate gearbox (6), a telescopic transmission mechanism (7), a fertilizer box (8), and a telescopic fertilizer delivery device (9). The frame (4) includes at least a main frame (10) and a telescopic frame (11); the main frame (10) and the telescopic frame (11) are nested structures, the main frame (10) provides a moving track for the telescopic frame (11), and the main frame (10) and the telescopic frame (11) are respectively hinged to the telescopic hydraulic cylinder (18). Under the telescopic action of the telescopic hydraulic cylinder (18), the telescopic frame (11) extends and retracts laterally relative to the main frame (10); The trenching and fertilizer mixing device (5) is fixed to one side of the telescopic frame (11) and extends and retracts laterally with the telescopic frame (11). It includes at least a trenching and fertilizer mixing gearbox (12), a hollow fertilizer pipe (13), and a trenching and fertilizer mixing device (14). The trenching and fertilizer mixing gearbox (12) has a pair of meshing bevel gears that drive the trenching and fertilizer mixing device (14) to rotate, thereby realizing trenching and fertilizer mixing. The hollow fertilizer pipe (13) rotates with the rotation of the bevel gears in the trenching and fertilizer mixing gearbox (12), and its upper opening is the fertilizer inlet (15). The trenching and fertilizer mixing device (14) is a spiral trencher that combines trenching and fertilizer mixing functions. Its main shaft is a hollow fertilizer pipe (16) for discharging fertilizer downward along the shaft. The lower opening of the hollow fertilizer pipe (16) is the fertilizer outlet (17). The outer periphery of the hollow fertilizer pipe (16) has trenching spiral blades for cutting soil and mixing fertilizer. The intermediate gearbox (6) is fixed to the center of the main frame (10) and contains a pair of meshing bevel gears to transmit the power of the rear output shaft of the tractor (1) to the telescopic transmission mechanism (7). The telescopic transmission mechanism (7) includes at least a telescopic hydraulic cylinder (18) and a telescopic transmission shaft (19); the telescopic hydraulic cylinder (18) is hinged to the main frame (10) and the telescopic frame (11) at both ends, respectively, and drives the telescopic frame (11) to extend and retract laterally relative to the main frame (10); the telescopic transmission shaft (19) is composed of an inner shaft and an outer shaft, the inner shaft can slide axially inside the outer shaft, one side of the telescopic transmission shaft (19) is connected to the intermediate gearbox (6), and the other side is connected to the ditching fertilizer mixer gearbox (12). When the telescopic frame (11) extends and retracts laterally relative to the main frame (10), the telescopic transmission shaft (19) continuously provides power at different extension and retraction distances; The fertilizer box (8) is located above the side-deep fertilization device (3); The telescopic fertilizer delivery device (9) includes at least a spiral fertilizer dispenser (20), a fixed fertilizer delivery pipe (21), and a telescopic fertilizer delivery pipe (22). The spiral fertilizer dispenser (20) traverses the bottom of the fertilizer tank (8) horizontally, extending into the interior of the fixed fertilizer delivery pipe (21) and the telescopic fertilizer delivery pipe (22), and is coaxial with both. The fixed fertilizer delivery pipe (21) and the telescopic fertilizer delivery pipe (22) have nested overlapping sections. One end of the fixed fertilizer delivery pipe (21) is fixedly connected to the fertilizer tank (8), and the other end is nested in the inner wall of the telescopic fertilizer delivery pipe (22). The telescopic fertilizer delivery pipe (22) is an "L"-shaped pipe, with one end nested with the outer wall of the fixed fertilizer delivery pipe (21), and the other end extending into the hollow lower fertilizer pipe (13). Fertilizer inlet (15); Telescopic fertilizer delivery pipe (22) moves synchronously with fertilizer inlet (15) and telescopically extends and retracts relative to fixed fertilizer delivery pipe (21); when telescopic fertilizer delivery pipe (22) is retracted, fertilizer is transported by spiral fertilizer discharger (20) to the "L"-shaped corner of telescopic fertilizer delivery pipe (22) and falls into fertilizer inlet (15) of hollow lower fertilizer pipe (13); when telescopic fertilizer delivery pipe (22) is extended, there is no spiral section inside telescopic fertilizer delivery pipe (22), fertilizer is transported to the "L"-shaped corner of telescopic fertilizer delivery pipe (22) by the push of subsequent fertilizer and its own fluidity and falls into fertilizer inlet (15) of hollow lower fertilizer pipe (13); when telescopic fertilizer delivery pipe (22) is extended to its maximum extent, there is still a nested overlapping section with fixed fertilizer delivery pipe (21); Depending on the row width of the orchard, the telescopic frame (11) in the side-deep fertilization device (3) extends a suitable distance relative to the main frame (10), and the trenching and fertilization device (5) fixedly connected to the telescopic frame (11) applies fertilizer into the deep soil layer near the root system of the fruit trees, adapting to fertilization operations with different row widths.

2. The orchard side-deep fertilizer applicator according to claim 1, characterized in that, The lifting and lowering of the side-deep fertilization device (3) is achieved through the suspension mechanism (2) of the tractor (1) to adjust the fertilization depth; in the non-operation state, the side-deep fertilization device (3) is lifted to a certain height above the ground through the suspension mechanism (2) to facilitate road passage.

3. The orchard side-deep fertilizer applicator according to claim 1, characterized in that, The trenching and fertilizer mixing device (5) is powered by a telescopic transmission mechanism (7) to ensure that it is continuously powered during the dynamic telescopic process.

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