A liquid fertilizer applicator and fertilization method for pear saplings

Abstract

This invention belongs to the field of horticulture, and specifically relates to a liquid fertilizer applicator and fertilization method for pear saplings. The fertilizer applicator consists of a fertilizer frame, a pedal cover, a nail plate, a tension spring, a connecting pipe, a fertilizer tank, a float, and a limiting nail. The fertilizer frame is the main body of the applicator; a pedal cover is installed at the lower part of the fertilizer frame; the nail plate penetrates the pedal cover and the lower part of the fertilizer frame; the float is placed inside the pedal cover to control the downward flow of the fertilizer solution; the limiting nail is detachably installed on the fertilizer frame to facilitate the installation of the pedal cover and the nail plate; the upper part of the nail plate is connected to the fertilizer frame via a tension spring; the lower part of the connecting pipe is connected to the pedal cover, and its upper part is connected to the bottom of the fertilizer tank. When the nail is driven down, a hole is first drilled until the liquid distribution box encounters the soil, then the nail plate is driven down, releasing the liquid fertilizer downwards. After the nail plate is pushed out, the liquid fertilizer flows into the deeper holes. This invention can be used for pear trees planted in red soil in southern China, allowing for deep fertilization and preventing clogging by mud and water.

Description

Technical Field

[0001] This invention belongs to the field of horticulture, and specifically relates to a liquid fertilizer applicator and fertilization method for pear saplings. Background Technology

[0002] Southern early-maturing pears refer to a group of early-maturing pear varieties suitable for cultivation in the southern climate, with a fruit ripening period from mid-June to mid-August. Due to the higher temperatures and faster warming in early spring in the south, the same pear variety ripens about a month earlier in the south than in the north. Northern pears mostly ripen in September and October. Southern early-maturing pears fill the gap between the off-season for pear and fruit supply and the peak season for fruit demand from June to August, resulting in high cultivation efficiency. Therefore, the planting area of ​​pears in the south is expanding year by year.

[0003] The warmer climate of southern China allows fruit trees to grow year-round, thus requiring frequent fertilization, especially for pear trees. However, the soil in the south is primarily red soil, characterized by its high viscosity and poor water permeability, making fertilization and water application difficult and hindering fertilizer penetration. Southern sandy pears typically bear fruit the year after planting, requiring continuous fertilization to ensure rapid growth. For pear trees grown in red soil, continuous and deep fertilization is necessary. Previous research (CN103404289A) has a complex structure and lacks anti-clogging features; patents CU203151998U, CN205454578U, and CN208029438U have fertilization holes that are not effectively clogged and require significant pressure to flush out blockages; these are generally unsuitable for deep fertilization in southern red soil. Therefore, a fertilizer applicator is needed for effective deep fertilization of young pear trees grown in southern red soil. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention designs a liquid fertilizer applicator and fertilization method for pear saplings. Specific features are as follows: A liquid fertilizer applicator for pear saplings, comprising a fertilizer frame 1, a pedal cover 2, a plate nail 3, a tension spring 4, a connecting pipe 5, a fertilizer tank 6, a float 7, and a limiting nail 8; the fertilizer frame 1 is the main body of the fertilizer applicator; the pedal cover 2 is installed at the lower part of the fertilizer frame 1; the plate nail 3 penetrates the pedal cover 2 and the lower part of the fertilizer frame 1; the float 7 is placed inside the pedal cover 2 to assist in controlling the downward flow of the fertilizer solution; the limiting nail 8 is detachably installed on the fertilizer frame 1 to facilitate the installation of the pedal cover 2 and the plate nail 3; the upper part of the plate nail 3 is connected to the fertilizer frame 1 via the tension spring 4; the lower part of the connecting pipe 5 is connected to the pedal cover 2, and its upper part is connected to the bottom of the fertilizer tank 6.

[0005] The fertilizer applicator 1 has support frames 1.1 on both sides. A liquid distribution box 1.3 is fixedly installed on the lower part of the support frame 1.1. A liquid distribution tube 1.4 is provided at the lower part of the liquid distribution box 1.3. Two arc-shaped scraper blades 1.5 are provided on both sides of the bottom port of the liquid distribution tube 1.4. The arc of the two scraper blades 1.5 faces inward. A handle 1.2 is provided on the top of the support frame 1.1. The handle 1.2 is used for hand operation by the fertilizer applicator. The upper part of the liquid distribution box 1.3 is open. A hanging rod 1.6 is connected between the two support frames 1.1 on the upper part of the liquid distribution box 1.3. Two upper hook rings 1.7 are provided at the lower part of the hanging rod 1.6. The hook rings 1.7 are used to hook the tension spring 4. Limiting holes 1.8 are opened on the two support frames 1.1 between the liquid distribution box 1.3 and the hanging rod 1.6. The limiting holes are used for the detachable installation of limiting nails 8.

[0006] The lower part of the pedal cover 2 is a plate plug 2.1, which is inserted into the separatory box 1.3; the upper part of the plate plug 2.1 is a plate cover 2.2; when the pedal cover 2 is on the separatory box 1.3, the plate cover 2.2 covers the upper part of the separatory box; a square upper nail opening 2.3 is opened in the middle of the pedal cover 2, which is used to insert a plate nail 3; a pipe hole 2.4 is provided near the edge of the pedal cover 2, and the pipe hole 2.4 is threaded for installing a connecting pipe 5; a concave ball cavity 2.5 is provided at the lower part of the connecting pipe 5; the concave ball cavity 2.5 is used to hold a float ball 7; a through plug hole 2.6 is opened at the bottom of the concave ball cavity 2.5; the float ball 7 is used to seal the plug hole 2.6.

[0007] The main body of the nail 3 is a square nail rod 3.1. A nail plate 3.2 is provided at the top of the nail rod 3.1, which is used by the fertilizer's foot. The nail plate 3.2 rests against the lower part of the limiting nail 8. Lower hook rings 3.3 are provided on both sides of the top of the nail plate 3.2; the lower hook rings 3.3 are used to install tension springs 4. The bottom of the nail rod 3.1 is provided with two conical nail heads 3.4. The upper part of the nail head 3.4 has two inwardly recessed arc-shaped liquid supply rods 3.5 on both sides of the nail rod 3.1. A sealing rod 3.6 is located between the liquid supply rod 3.5 and the nail head 3.4. A sealing sheet 3.7 is installed in the middle of the nail rod 3.1; the sealing sheet 3.7 is used to seal the plug hole 2.6. A magnetic block 3.8 is provided at the bottom of the sealing sheet 3.7; the magnetic block 3.8 is used to attract the float ball 7.

[0008] The main body of the fertilizer box 6 is a box body 6.1, which is used to store liquid fertilizer. The top of the box body 6.1 is provided with a lid opening 6.2, which is used to cover the lid 6.3. The top of the lid 6.3 is provided with a flat pressure hole 6.4. A carrying strap 6.5 is provided on one side of the box body 6.1, which is used by the fertilizer applicator to carry it on their shoulder. The bottom of the box body 6.1 is provided with a bottom frame 6.6. A bottom opening 6.7 is provided on one side of the bottom frame 6.6. The bottom opening 6.7 is to prevent the connecting pipe 5 from being crushed when the fertilizer box 6 is placed on the ground. The bottom of the fertilizer box 6 is a box bottom 6.8. The box bottom 6.8 is provided with a bottom pipe 6.9, which is used to connect one end of the connecting pipe 5.

[0009] The float 7 is a hollow sphere that can be attracted by a magnet and floats in water.

[0010] The sealing sheet 3.7 is made of rubber and has several holes to reduce the resistance generated by the up-and-down movement of the sealing sheet 3.7; the diameter of the sealing sheet 3.7 is smaller than the inner diameter of the liquid separator 1.3.

[0011] The main body of the tension spring 4 is a spring wire 4.1; spring hooks 4.2 are provided at both ends of the spring wire 4.1; the spring hooks 4.2 are used to hook onto the upper hook ring 1.7 and the lower hook ring 3.3 respectively.

[0012] When the nail plate 3.2 is pressed against the lower part of the limiting nail 8, the tension spring 4 is in a tensioned state.

[0013] The main body of the connecting pipe 5 is a pipe body 5.1; the upper end of the pipe body is connected to the bottom pipe 6.9; a connector 5.2 is provided at the bottom of the connecting pipe 5; the connector 5.2 is provided with threads for engaging with the threads of the pipe hole 2.4; the bottom of the connector 5.2 is a filter screen 5.3; the filter screen 5.3 is used to filter impurities.

[0014] The bottom of the box, 6.8, is a concave bottom surface.

[0015] A valve is installed on the bottom pipe 6.9 to control the downward flow of fertilizer liquid.

[0016] The vertical length of the liquid supply rod 3.5 is less than the length of the liquid distribution tube 1.4; in a static state, the upper part of the liquid supply rod 3.5 extends into the liquid distribution box 1.3, the liquid sealing rod 3.6 is located inside the liquid sealing rod 3.6, and the mud scraper 1.5 is wrapped around the nail head 3.4.

[0017] The 1.5mm scraper blade is a spring blade.

[0018] The fertilization method of this fertilizer applicator is as follows: After the fertilizer applicator is connected, liquid fertilizer is loaded into it; the valve on the bottom tube 6.9 is opened; the plate nail is pushed down continuously, and the liquid enters the liquid distribution box 1.3. At the same time, the liquid enters the gap between the liquid supply rod 3.5 and the liquid distribution tube 1.4; the fertilizer applicator carries the fertilizer box 6 on his back; the fertilizer applicator holds the handle 1.2, steps on the pedal cover 2, and inserts the nail head 3.4, the liquid distribution tube 1.4, and the mud scraper 1.5 into the sticky soil until the bottom of the liquid distribution box 1.3 touches the ground and stops; the fertilizer applicator then steps on the nail plate 3.2. The nail head 3.4 continues to drill downwards. When the arc surface of the liquid supply rod 3.5 extends out of the liquid distribution pipe 1.4, the fertilizer liquid between the liquid supply rod 3.5 and the liquid distribution pipe 1.4 flows into the soil. Continue to step down on the nail plate 3.2, so that the nail head 3.4 continues to drill into the soil. When the nail plate 3.2 touches the pedal cover 2, slowly release the foot until the nail plate 3.2 is against the lower part of the limit nail 8. During the upward movement of the nail rod 3.1, the mud scraper 1.5 scrapes mud off the liquid supply rod 3.5. Lift the fertilizer applicator by holding the handle 1.2. The liquid fertilizer in the soil flows into the gap left by the nail head 3.4.

[0019] The beneficial technical effects of this invention are as follows:

[0020] The inventive points of this application will now be further elaborated in conjunction with their technical features and effects:

[0021] 1. A liquid dispensing rod is installed at the lower part of the nail plate. The arc length of the dispensing rod is shorter than that of the dispensing tube. In the stationary state, the upper part of the arc extends into the dispensing box. Pushing the nail plate downwards allows the arc to extend beyond the dispensing tube, enabling quantitative application. Simultaneously, the liquid fertilizer lubricates the nail head, facilitating further drilling into the sticky and hard red soil. Pushing the nail plate downwards creates a relatively deep hole. After removing the nail plate, the liquid fertilizer enters the depth of the hole. During the upward movement of the nail plate, a scraper scrapes mud from the dispensing rod to prevent mud from mixing with the nail plate and dispensing tube, causing blockage or difficulty in relative movement. The arc surface of the dispensing rod extends into the dispensing box, and the liquid in the dispensing box enters the cavity formed between the dispensing rod and the dispensing tube. Liquid in the fertilizer tank enters the dispensing box through a connecting pipe.

[0022] 2. Based on the technical features of beneficial effect 1, the upper and lower parts of the nail rod slide in contact with the upper nail opening and the liquid distribution tube, respectively. While this achieves a certain degree of sealing, to further prevent leakage, this invention provides a sealing film on the nail rod, with a magnetic block at the bottom of the sealing film. Simultaneously, a pipe hole is provided on the pedal cover. After the connecting pipe is installed in the pipe hole, a relatively closed space is formed, in which a float is placed. After the float is attracted by the magnetic block, the sealing film seals the plug hole, thus preventing liquid fertilizer from flowing downwards. At the same time, the sealing film provides a strict seal to the upper nail opening, preventing liquid in the liquid distribution box from flowing downwards under atmospheric pressure. Attached Figure Description

[0023] Figure 1 , one A diagram showing the disassembly of a liquid fertilizer applicator for young pear trees.

[0024] Figure 2 , one A schematic diagram of the assembly of a liquid fertilizer applicator for young pear trees.

[0025] Figure 3 Schematic diagram of fertilizer rack structure.

[0026] Figure 4 Schematic diagram of the pedal cover.

[0027] Figure 5 A schematic diagram of the structure of a board nail.

[0028] Figure 6 A schematic diagram of the tension spring and connecting tube structure, and a partial structural screenshot of the connecting tube.

[0029] Figure 7 Schematic diagram of fertilizer bin structure.

[0030] Figure 8 A schematic diagram of the structure of the float and the limiting pin.

[0031] In the diagram, 1 is the fertilizer rack, 2 is the pedal cover, 3 is the plate nail, 4 is the tension spring, 5 is the connecting pipe, 6 is the fertilizer box, 7 is the float, and 8 is the limit pin.

[0032] 1.1 Support frame, 1.2 Handle, 1.3 Separating box, 1.4 Separating tube, 1.5 Sludge scraper, 1.6 Hanging rod, 1.7 Upper hook ring, 1.8 Limiting hole; 2.1 Plate stopper, 2.2 Plate cover, 2.3 Upper nail opening, 2.4 Tube hole, 2.5 Concave ball cavity, 2.6 Plug hole;

[0033] 3.1 Nail rod, 3.2 Nail plate, 3.3 Lower hook ring, 3.4 Nail head, 3.5 Liquid supply rod, 3.6 Liquid sealing rod, 3.7 Sealing film, 3.8 Magnetic block; 4.1 Spring wire, 4.2 Spring hook; 5.1 Tube body, 5.2 Connector, 5.3 Filter screen;

[0034] 6.1 Box body, 6.2 lid opening, 6.3 lid body, 6.4 flat pressure hole, 6.5 shoulder strap, 6.6 bottom frame, 6.7 bottom opening, 6.8 bottom of box, 6.9 bottom tube. Detailed Implementation

[0035] The following is in conjunction with the appendix Figure 1-8The specific structure of the present invention is further illustrated by the embodiments: The liquid fertilizer applicator for pear saplings comprises a fertilizer frame 1, a pedal cover 2, a plate nail 3, a tension spring 4, a connecting pipe 5, a fertilizer tank 6, a float 7, and a limiting nail 8. The fertilizer frame 1 is the main body of the fertilizer applicator. The pedal cover 2 is installed at the lower part of the fertilizer frame 1. The plate nail 3 penetrates the pedal cover 2 and the lower part of the fertilizer frame 1. The float 7 is placed inside the pedal cover 2 to assist in controlling the downward flow of the fertilizer solution. The limiting nail 8 is detachably installed on the fertilizer frame 1 to facilitate the installation of the pedal cover 2 and the plate nail 3. The upper part of the plate nail 3 is connected to the fertilizer frame 1 via the tension spring 4. The lower part of the connecting pipe 5 is connected to the pedal cover 2, and its upper part is connected to the bottom of the fertilizer tank 6.

[0036] The fertilizer applicator 1 has support frames 1.1 on both sides. A liquid distribution box 1.3 is fixedly installed on the lower part of the support frame 1.1. A liquid distribution tube 1.4 is provided at the lower part of the liquid distribution box 1.3. Two arc-shaped scraper blades 1.5 are provided on both sides of the bottom port of the liquid distribution tube 1.4. The arc of the two scraper blades 1.5 faces inward. A handle 1.2 is provided on the top of the support frame 1.1. The handle 1.2 is used for hand operation by the fertilizer applicator. The upper part of the liquid distribution box 1.3 is open. A hanging rod 1.6 is connected between the two support frames 1.1 on the upper part of the liquid distribution box 1.3. Two upper hook rings 1.7 are provided at the lower part of the hanging rod 1.6. The hook rings 1.7 are used to hook the tension spring 4. Limiting holes 1.8 are opened on the two support frames 1.1 between the liquid distribution box 1.3 and the hanging rod 1.6. The limiting holes are used for the detachable installation of limiting nails 8.

[0037] The lower part of the pedal cover 2 is a plate plug 2.1, which is inserted into the separatory box 1.3; the upper part of the plate plug 2.1 is a plate cover 2.2; when the pedal cover 2 is on the separatory box 1.3, the plate cover 2.2 covers the upper part of the separatory box; a square upper nail opening 2.3 is opened in the middle of the pedal cover 2, which is used to insert a plate nail 3; a pipe hole 2.4 is provided near the edge of the pedal cover 2, and the pipe hole 2.4 is threaded for installing a connecting pipe 5; a concave ball cavity 2.5 is provided at the lower part of the connecting pipe 5; the concave ball cavity 2.5 is used to hold a float ball 7; a through plug hole 2.6 is opened at the bottom of the concave ball cavity 2.5; the float ball 7 is used to seal the plug hole 2.6.

[0038] The main body of the nail 3 is a square nail rod 3.1. A nail plate 3.2 is provided at the top of the nail rod 3.1, which is used by the fertilizer's foot. The nail plate 3.2 rests against the lower part of the limiting nail 8. Lower hook rings 3.3 are provided on both sides of the top of the nail plate 3.2; the lower hook rings 3.3 are used to install tension springs 4. The bottom of the nail rod 3.1 is provided with two conical nail heads 3.4. The upper part of the nail head 3.4 has two inwardly recessed arc-shaped liquid supply rods 3.5 on both sides of the nail rod 3.1. A sealing rod 3.6 is located between the liquid supply rod 3.5 and the nail head 3.4. A sealing sheet 3.7 is installed in the middle of the nail rod 3.1; the sealing sheet 3.7 is used to seal the plug hole 2.6. A magnetic block 3.8 is provided at the bottom of the sealing sheet 3.7; the magnetic block 3.8 is used to attract the float ball 7.

[0039] The main body of the fertilizer box 6 is a box body 6.1, which is used to store liquid fertilizer. The top of the box body 6.1 is provided with a lid opening 6.2, which is used to cover the lid 6.3. The top of the lid 6.3 is provided with a flat pressure hole 6.4. A carrying strap 6.5 is provided on one side of the box body 6.1, which is used by the fertilizer applicator to carry it on their shoulder. The bottom of the box body 6.1 is provided with a bottom frame 6.6. A bottom opening 6.7 is provided on one side of the bottom frame 6.6. The bottom opening 6.7 is to prevent the connecting pipe 5 from being crushed when the fertilizer box 6 is placed on the ground. The bottom of the fertilizer box 6 is a box bottom 6.8. The box bottom 6.8 is provided with a bottom pipe 6.9, which is used to connect one end of the connecting pipe 5.

[0040] The float 7 is a hollow sphere that can be attracted by a magnet and floats in water.

[0041] The sealing sheet 3.7 is made of rubber and has several holes to reduce the resistance generated by the up-and-down movement of the sealing sheet 3.7; the diameter of the sealing sheet 3.7 is smaller than the inner diameter of the liquid separator 1.3.

[0042] The main body of the tension spring 4 is a spring wire 4.1; spring hooks 4.2 are provided at both ends of the spring wire 4.1; the spring hooks 4.2 are used to hook onto the upper hook ring 1.7 and the lower hook ring 3.3 respectively.

[0043] When the nail plate 3.2 is pressed against the lower part of the limiting nail 8, the tension spring 4 is in a tensioned state.

[0044] The main body of the connecting pipe 5 is a pipe body 5.1; the upper end of the pipe body is connected to the bottom pipe 6.9; a connector 5.2 is provided at the bottom of the connecting pipe 5; the connector 5.2 is provided with threads for mutual engagement with the threads of the pipe hole 2.4; the bottom of the connector 5.2 is a filter screen 5.3; the filter screen 5.3 is used to filter impurities.

[0045] The bottom of the box, 6.8, is a concave bottom surface.

[0046] A valve is installed on the bottom pipe 6.9 to control the downward flow of fertilizer liquid.

[0047] The vertical length of the liquid supply rod 3.5 is less than the length of the liquid distribution tube 1.4; in a static state, the upper part of the liquid supply rod 3.5 extends into the liquid distribution box 1.3, the liquid sealing rod 3.6 is located inside the liquid sealing rod 3.6, and the mud scraper 1.5 is wrapped around the nail head 3.4.

[0048] A specific fertilization method for a liquid fertilizer applicator for pear saplings is as follows: After the fertilizer applicator is connected, liquid fertilizer is loaded into it; the valve on the bottom pipe 6.9 is opened; the plate nail is continuously pushed downwards, and the liquid enters the dispensing box 1.3, while simultaneously entering the gap between the dispensing rod 3.5 and the dispensing pipe 1.4; the fertilizer applicator carries the fertilizer box 6 on their back; the fertilizer applicator holds the handle 1.2, steps on the foot pedal cover 2, and inserts the nail head 3.4, the dispensing pipe 1.4, and the scraper blade 1.5 into the sticky soil until the bottom of the dispensing box 1.3 touches the ground; the fertilizer applicator then steps on the nail plate 3. 2; The nail head 3.4 continues to drill downwards. When the arc surface of the liquid supply rod 3.5 extends out of the liquid distribution pipe 1.4, the fertilizer liquid between the liquid supply rod 3.5 and the liquid distribution pipe 1.4 flows into the soil; Continue to step down on the nail plate 3.2, so that the nail head 3.4 continues to drill into the soil; When the nail plate 3.2 touches the pedal cover 2, slowly release the foot until the nail plate 3.2 is against the lower part of the limit nail 8; During the upward movement of the nail rod 3.1, the mud scraper 1.5 scrapes the mud off the liquid supply rod 3.5; Lift the fertilizer applicator by holding the handle 1.2; The liquid fertilizer in the soil flows into the gap left by the nail head 3.4.

[0049] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. For example, the connection method may be other than that of a connecting post. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A liquid fertilizer applicator for pear saplings, the fertilizer applicator comprising a fertilizer frame (1), a pedal cover (2), a plate nail (3), a tension spring (4), a connecting pipe (5), a fertilizer box (6), a float (7), and a limiting nail (8); the fertilizer frame (1) is the main body of the fertilizer applicator; the pedal cover (2) is installed at the lower part of the fertilizer frame (1); the plate nail (3) penetrates the pedal cover (2) and the lower part of the fertilizer frame (1); the float (7) is placed inside the pedal cover (2) to assist in controlling the downward flow of fertilizer solution; the limiting nail (8) is detachably installed on the fertilizer frame (1) to facilitate the installation of the pedal cover (2) and the plate nail (3); the upper part of the plate nail (3) is connected to the fertilizer frame (1) by a tension spring (4); the lower part of the connecting pipe (5) is connected to the pedal cover (2), and its upper part is connected to the bottom of the fertilizer box (6); The fertilizer applicator (1) has support frames (1.1) on both sides. A liquid distribution box (1.3) is fixedly installed on the lower part of the support frame (1.1). A liquid distribution tube (1.4) is provided at the lower part of the liquid distribution box (1.3). Two arc-shaped scraper blades (1.5) are provided on both sides of the bottom port of the liquid distribution tube (1.4). The arc of the two scraper blades (1.5) faces inward. A handle (1.2) is provided on the top of the support frame (1.1). The handle (1.2) is used for hand operation by the fertilizer applicator. The upper opening of the dispensing box (1.3) is connected to the two support frames (1.1) at the upper part of the dispensing box (1.3) by a hanging rod (1.6); the lower part of the hanging rod (1.6) is provided with two upper hook rings (1.7); the upper hook rings (1.7) are used to hook the tension spring (4); limit holes (1.8) are opened on the two support frames (1.1) between the dispensing box (1.3) and the hanging rod (1.6); the limit holes (1.8) are used for the detachable installation of limit pins (8). The lower part of the pedal cover (2) is a stopper (2.1), which is inserted into the separatory box (1.3); the upper part of the stopper (2.1) is a cover (2.2); when the pedal cover (2) is on the separatory box (1.3), the cover (2.2) covers the upper part of the separatory box (1.3); a square upper nail opening (2.3) is opened in the middle of the pedal cover (2), which is used for inserting A board nail (3); a pipe hole (2.4) is provided near the edge of the pedal cover (2), and a thread is provided in the pipe hole (2.4) for installing a connecting pipe (5); a concave ball cavity (2.5) is provided at the lower part of the pipe hole (2.4); the concave ball cavity (2.5) is used to hold a float (7); a through plug hole (2.6) is opened at the bottom of the concave ball cavity (2.5); the float (7) is used to seal the plug hole (2.6); The main body of the nail (3) is a square nail rod (3.1). A nail plate (3.2) is provided on the top of the nail rod (3.1). The nail plate (3.2) is used for the fertilizer to step on. The nail plate (3.2) abuts against the lower part of the limiting nail (8). Lower hook rings (3.3) are provided on both sides of the top of the nail plate (3.2). The lower hook rings (3.3) are used to install tension springs (4). The bottom of the nail rod (3.1) is provided with two conical nail heads (3.4). The upper part of the nail head (3.4) has two inwardly recessed, arc-shaped liquid supply rods (3.5) on both sides of the nail rod (3.1); between the liquid supply rod (3.5) and the nail head (3.4) is a sealing rod (3.6); a sealing sheet (3.7) is installed in the middle of the nail rod (3.1); the sealing sheet (3.7) is used to seal the plug hole (2.6); a magnetic block (3.8) is provided at the bottom of the sealing sheet (3.7); the magnetic block (3.8) is used to attract the float (7); The main body of the fertilizer box (6) is a box body (6.1), which is used to store liquid fertilizer; the top of the box body (6.1) is provided with a lid opening (6.2); the lid opening is used to cover the lid (6.3); the top of the lid (6.3) is provided with a flat pressure hole (6.4); a carrying strap (6.5) is provided on one side of the box body (6.1), which is used by the fertilizer applicator to carry it on their shoulder; a bottom frame (6.6) is provided around the bottom of the box body (6.1); a bottom opening (6.7) is provided on one side of the bottom frame (6.6); the bottom opening (6.7) is to prevent the connecting pipe (5) from being pressed when the fertilizer box (6) is placed on the ground; the bottom of the fertilizer box (6) is a box bottom (6.8); a bottom pipe (6.9) is provided on the box bottom (6.8); the bottom pipe (6.9) is used to connect one end of the connecting pipe (5).

2. The liquid fertilizer applicator for pear saplings according to claim 1, characterized in that, The float (7) is a hollow ball that can be attracted by a magnet and can float in the fertilizer solution.

3. The liquid fertilizer applicator for pear saplings according to claim 1, characterized in that, The sealing sheet (3.7) is made of rubber and has several holes to reduce the resistance generated by the up-and-down movement of the sealing sheet (3.7). The diameter of the sealing sheet (3.7) is smaller than the inner diameter of the liquid separator (1.3).

4. A liquid fertilizer applicator for pear saplings according to claim 1, characterized in that, The main body of the tension spring (4) is a spring wire (4.1); the two ends of the spring wire (4.1) are provided with spring hooks (4.2); the spring hooks (4.2) are used to hook onto the upper hook ring (1.7) and the lower hook ring (3.3) respectively.

5. A liquid fertilizer applicator for pear saplings according to claim 1, characterized in that, When the nail plate (3.2) is pressed against the lower part of the limiting nail (8), the tension spring (4) is in a tensioned state.

6. A liquid fertilizer applicator for young pear trees according to claim 1, characterized in that, The main body of the connecting pipe (5) is a pipe body (5.1); the upper end of the pipe body is connected to the bottom pipe (6.9); a connector (5.2) is provided at the bottom of the connecting pipe (5); the connector (5.2) is provided with threads for engaging with the threads of the pipe hole (2.4); the bottom of the connector (5.2) is a filter screen (5.3); the filter screen (5.3) is used to filter impurities.

7. A liquid fertilizer applicator for pear saplings according to claim 1, characterized in that, The bottom of the box (6.8) is a concave bottom surface.

8. A liquid fertilizer applicator for pear saplings according to claim 1, characterized in that, A valve is installed on the bottom pipe (6.9) to control the downward flow of fertilizer liquid.

9. A liquid fertilizer applicator for young pear trees according to claim 1, characterized in that, The vertical length of the liquid supply rod (3.5) is less than the length of the liquid distribution tube (1.4); in a static state, the upper part of the liquid supply rod (3.5) extends into the liquid distribution box (1.3), the liquid sealing rod (3.6) is located inside the liquid distribution tube (1.4), and the mud scraper (1.5) is wrapped around the nail head (3.4).

10. A method for applying liquid fertilizer to young pear trees, characterized in that, Using the fertilizer applicator according to any one of claims 1-9; after the fertilizer applicator is connected, liquid fertilizer is loaded into the fertilizer applicator; the valve on the bottom tube (6.9) is opened; the plate nail is pushed down continuously, and the liquid enters the liquid distribution box (1.3), and the liquid simultaneously enters the gap between the liquid supply rod (3.5) and the liquid distribution tube (1.4); the fertilizer applicator carries the fertilizer box (6) on his back; the fertilizer applicator holds the handle (1.2), steps on the pedal cover (2), and inserts the nail head (3.4), the liquid distribution tube (1.4) and the mud scraper (1.5) into the sticky soil until the bottom of the liquid distribution box (1.3) touches the ground and stops; the fertilizer applicator then steps on the nail plate (3.2); the nail head (3.4) Continue drilling downwards. When the arc surface of the liquid supply rod (3.5) extends out of the liquid distribution pipe (1.4), the fertilizer liquid between the liquid supply rod (3.5) and the liquid distribution pipe (1.4) flows into the soil. Continue to step down on the nail plate (3.2) so that the nail head (3.4) continues to drill into the soil. When the nail plate (3.2) touches the pedal cover (2), slowly release your foot until the nail plate (3.2) is against the lower part of the limit nail (8). During the upward movement of the nail rod (3.1), the mud scraper (1.5) scrapes the mud off the liquid supply rod (3.5). Lift the fertilizer applicator by holding the handle (1.2). The liquid fertilizer in the soil flows into the gap created by the nail head (3.4).

Images