A fertilizer applicator for forage grass planting in saline-alkali land

Abstract

The present invention discloses a fertilizer applicator for forage grass planting in saline-alkali land, which relates to the technical field of agricultural fertilizer application equipment. The present invention provides a fertilizer applicator for forage grass planting in saline-alkali land, including a pushing cart, etc. The pushing cart is fixedly connected with a fertilizer tank, and the pushing cart is fixedly connected with a double-shaft motor. A crankshaft is fixedly connected to the output end on one side of the double-shaft motor. A lifting frame is slidably connected to the pushing cart. The lifting frame is slidably connected with a pair of fertilizer applicator frames through damping rings. The fertilizer applicator frames are provided with discharge ports evenly distributed at equal circumferential intervals. A pair of clamping blocks are slidably connected to the lifting frame. The fertilizer tank is fixedly connected and communicated with a fixed pipe, and a hose is fixedly connected and communicated between the fixed pipe and the pair of fertilizer applicator frames. A reset assembly is provided on the lifting frame. Through components such as the clamping blocks and the second fixing plate, the present invention enables the fertilizer applicator frame to slide relative to the lifting frame when contacting substances such as stones, thereby avoiding hard collisions and damage between the fertilizer applicator frame and substances such as stones, and prolonging the service life of the fertilizer applicator frame.

Description

Technical Field

[0001] The present invention relates to the technical field of agricultural fertilizing equipment, and in particular to a fertilizer applicator for forage grass planting in saline-alkali land. Background Art

[0002] A fertilizer applicator is a mechanical device used in the fields of agriculture and horticulture, mainly for evenly spreading chemical fertilizers or organic fertilizers onto farmland, orchards, lawns or other planting areas. The design of the fertilizer applicator aims to improve fertilization efficiency, reduce manual labor intensity, and ensure more uniform distribution of fertilizers, thereby optimizing crop growth conditions and improving yield and quality. The main types of fertilizer applicators include manual, tractor-drawn, self-propelled and suspended types, etc.

[0003] When fertilizing saline-alkali land with a fertilizer applicator, workers usually make the fertilizing component intermittently insert into the soil and fertilize to appropriately increase the fertilizing depth, so as to reduce the salt concentration in the surface soil and reduce the risk of the roots of forage grass seedlings directly contacting high-concentration salts. And deep fertilization can also guide the roots of forage grass seedlings to extend deeper into the soil layer, and these soil layers usually have lower salt content and relatively better water and nutrient conditions, which is beneficial to the healthy development of the roots. However, the existing fertilizer applicators for forage grass planting in saline-alkali land lack protection for the fertilizing component during use, making the fertilizing component prone to hard collisions with substances such as stones in the soil and being damaged when inserted into the soil.

[0004] Based on the above situation, the present invention proposes a fertilizer applicator for forage grass planting in saline-alkali land with flexible fertilization. Summary of the Invention

[0005] In order to overcome the defect that the existing fertilizer applicator for forage grass planting in saline-alkali land lacks protection for the fertilizing component during use, making the fertilizing component prone to hard collisions with substances such as stones in the soil and being damaged when inserted into the soil, the present invention provides a fertilizer applicator for forage grass planting in saline-alkali land with flexible fertilization.

[0006] A fertilizer applicator for forage grass planting in saline-alkali land includes a push cart, a fertilizer tank, a double-shaft motor, a lifting frame, a fixed pipe, a hose, a fertilizing frame, a clamping block, a discharge port, a crankshaft and a reset component. The push cart is fixedly connected with the fertilizer tank, the push cart is fixedly connected with the double-shaft motor, one output end of the double-shaft motor is fixedly connected with the crankshaft, the push cart is slidably connected with the lifting frame, the crankshaft is movably connected with the lifting frame, the lifting frame is slidably connected with a pair of fertilizing frames through damping rings, the fertilizing frame is provided with discharge ports distributed at equal intervals in a circumferential manner, the lifting frame is slidably connected with a pair of clamping blocks, the fertilizing frame is provided with a slot for the clamping block to insert, the fertilizing frame and the clamping block are in extrusion fit, the fertilizer tank is fixedly connected and communicated with the fixed pipe, and a hose is fixedly connected and communicated between the fixed pipe and each of the pair of fertilizing frames. A reset component is arranged on the lifting frame.

[0007] Further, the reset assembly includes a first fixed plate, a first telescopic rod, and a second fixed plate. The paired first telescopic rods are fixedly connected to the lifting frame. The clamping block is fixedly connected to the first fixed plate. The telescopic end of the first telescopic rod is fixedly connected to the first fixed plate. The pushing cart is fixedly connected with paired second fixed plates, and the second fixed plates are in pressing fit with the fertilizer applicator frame.

[0008] Further, one end of the fertilizer applicator frame is conical.

[0009] Further, the opening direction of the discharge port is obliquely downward.

[0010] Further, it further includes an opening and closing mechanism. The opening and closing mechanism is arranged on the fertilizer applicator frame. The opening and closing mechanism includes a fixed frame, a flow discharge plate, and a second telescopic rod. The second telescopic rod is fixedly connected to the fertilizer applicator frame. The fertilizer applicator frame is slidably connected with the flow discharge plate. The telescopic end of the second telescopic rod is fixedly connected to the flow discharge plate. The pushing cart is fixedly connected with paired fixed frames, and the fixed frames are in pressing fit with the flow discharge plate.

[0011] Further, the flow discharge plate is provided with flow discharge holes.

[0012] Further, the fixed frame is provided with an inclined surface.

[0013] Further, it further includes a pressurizing mechanism. The pressurizing mechanism is arranged on the pushing cart. The pressurizing mechanism includes a rotating frame, a pneumatic cylinder, a piston frame, a third telescopic rod, an air inlet valve, and a check valve. The pneumatic cylinder is fixedly connected to the pushing cart. The pneumatic cylinder is slidably connected with the piston frame. The pneumatic cylinder is fixedly connected with the third telescopic rod. The telescopic end of the third telescopic rod is fixedly connected to the piston frame. The output end on the other side of the dual-axis motor is fixedly connected with the rotating frame, and the rotating frame is in pressing fit with the piston frame. The pneumatic cylinder is fixedly connected with the air inlet valve, and a check valve is fixedly connected and communicated between the pneumatic cylinder and the fixed pipe.

[0014] Further, it further includes a diversion frame. The fertilizer tank is fixedly connected with the diversion frame, and the diversion frame is provided with an arc surface.

[0015] The beneficial effects are as follows: 1. Through components such as the clamping block and the second fixed plate, the present invention not only enables the fertilizer applicator frame to be smoothly inserted into the soil and fertilize under normal circumstances, but also enables the fertilizer applicator frame to relatively slide with the lifting frame when contacting substances such as stones, thereby avoiding hard collisions and damages between the fertilizer applicator frame and substances such as stones, prolonging the service life of the fertilizer applicator frame, and improving the practicability of this fertilizer applicator.

[0016] 2. With the fertilizer applicator frame with a conical bottom end, the present invention enables this fertilizer applicator to be more easily inserted into the soil and fertilize. The discharge port located above the bottom end of the fertilizer applicator frame and facing obliquely downward is neither easily blocked by the soil when the fertilizer applicator frame is inserted downward into the soil, nor helps the fertilizer to be ejected from the discharge port under the action of its own gravity, improving the practicability of this fertilizer applicator.

[0017] 3. Through components such as the flow-discharging plate and the second telescopic rod, the present invention can prevent fertilizers from flowing out of the fertilizer applicator and the discharge port when the fertilizer applicator is not inserted into the soil or is blocked by substances such as stones, thus avoiding waste of fertilizers, reducing the use cost of this fertilizer applicator, and enhancing the practicability of this fertilizer applicator.

[0018] 4. Through components such as the rotating frame and the piston frame, the present invention can increase the spraying speed of fertilizers from the discharge port, so that not only can the fertilizers better penetrate into the surrounding soil after being sprayed from the discharge port, but also it can further prevent the discharge port from being blocked by soil, enhancing the fertilization effect and practicability of this fertilizer applicator.

[0019] 5. Through the guiding frame with an arc surface, when the fertilizer applicator is blocked by substances such as stones and fertilizers cannot be sprayed out of the discharge port, the present invention can make the gas output by the air pump enter the fertilizer tank and agitate the fertilizers, thereby accelerating the dissolution of solid fertilizers and avoiding precipitation of liquid fertilizers, enhancing the fertilization effect and practicability of this fertilizer applicator. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structure schematic diagram of the present invention.

[0021] Figure 2 It is a three-dimensional structure schematic diagram of components such as the trolley, the fertilizer tank and the double-shaft motor of the present invention.

[0022] Figure 3 It is a three-dimensional structure schematic diagram of the trolley of the present invention.

[0023] Figure 4 It is a three-dimensional structure schematic diagram of components such as the hose, the fertilizer applicator and the clamping block of the present invention.

[0024] Figure 5 It is a three-dimensional structure schematic diagram of components such as the fertilizer applicator, the clamping block and the discharge port of the present invention.

[0025] Figure 6 It is a three-dimensional structure schematic diagram of components such as the first fixing plate, the first telescopic rod and the second fixing plate of the present invention.

[0026] Figure 7 It is a three-dimensional structure schematic diagram of components such as the clamping block, the first fixing plate and the first telescopic rod of the present invention.

[0027] Figure 8 It is a three-dimensional structure schematic diagram of components such as the fixing frame, the flow-discharging plate and the second telescopic rod of the present invention.

[0028] Figure 9 It is a three-dimensional structure schematic diagram of the fertilizer applicator, the flow-discharging plate and the second telescopic rod of the present invention.

[0029] Figure 10This is a three-dimensional structural schematic diagram of components such as the rotating frame, the third telescopic rod, and the diversion frame of the present invention.

[0030] Figure 11 This is a three-dimensional structural schematic diagram of components such as the piston frame, the third telescopic rod, and the intake valve of the present invention.

[0031] Names and serial numbers of components in the figure: 101 - Push cart, 102 - Fertilizer tank, 103 - Biaxial motor, 104 - Lifting frame, 105 - Fixed pipe, 106 - Hose, 107 - Fertilizing frame, 108 - Clamping block, 109 - Discharge port, 110 - Crankshaft, 201 - First fixing plate, 202 - First telescopic rod, 203 - Second fixing plate, 301 - Fixed frame, 302 - Drainage plate, 303 - Second telescopic rod, 401 - Rotating frame, 402 - Air pump, 403 - Piston frame, 404 - Third telescopic rod, 405 - Intake valve, 406 - Check valve, 501 - Diversion frame. Detailed implementation manners

[0032] The technical solution of the present invention will be further described below with reference to the accompanying drawings. Embodiment 1

[0033] A fertilizer applicator for saline-alkali land forage grass planting, as Figures 1-7 shown, includes a push cart 101, a fertilizer tank 102, a biaxial motor 103, a lifting frame 104, a fixed pipe 105, a hose 106, a fertilizing frame 107, a clamping block 108, a discharge port 109, a crankshaft 110 and a reset assembly. The fertilizer tank 102 is fixedly connected to the top right of the push cart 101, the biaxial motor 103 is fixedly connected to the middle of the push cart 101, the left output end of the biaxial motor 103 is fixedly connected to the crankshaft 110, the lifting frame 104 is slidably connected to the middle of the push cart 101, the crankshaft 110 is movably connected to the lifting frame 104, the lower part of the lifting frame 104 is slidably connected to the fertilizing frames 107 symmetrically distributed front and back through damping rings, the lower part of the fertilizing frame 107 is provided with discharge ports 109 equally spaced in a circumferential manner, the lower part of the lifting frame 104 is slidably connected to the clamping blocks 108 symmetrically distributed front and back, one side of the clamping block 108 close to the fertilizing frame 107 is provided with an inclined surface, the fertilizing frame 107 is provided with a slot for the adjacent clamping block 108 to insert, the fertilizing frame 107 is in extrusion fit with the adjacent clamping block 108, the left front part of the fertilizer tank 102 is fixedly connected and communicated with the fixed pipe 105, and hoses 106 are fixedly connected and communicated between the fixed pipe 105 and the two fertilizing frames 107 front and back, and a reset assembly is provided on the lifting frame 104.

[0034] As Figure 6 and Figure 7As shown in the figure, the reset assembly includes a first fixed plate 201, a first telescopic rod 202, and a second fixed plate 203. Two first telescopic rods 202 are respectively fixedly connected to the front and rear sides of the lower part of the lifting frame 104. A first fixed plate 201 is fixedly connected to the right side of the clamping block 108. The telescopic end of the first telescopic rod 202 is fixedly connected to the adjacent first fixed plate 201. Two symmetrically distributed second fixed plates 203 are fixedly connected to the middle part of the pushing cart 101. The second fixed plates 203 are in extrusion fit with the adjacent fertilizing frame 107.

[0035] As Figures 4-7 shown, the bottom end of the fertilizing frame 107 is conical.

[0036] As Figure 5 shown, the opening direction of the discharge port 109 is obliquely downward.

[0037] As Figure 8 and Figure 9 shown, it further includes an opening and closing mechanism. The opening and closing mechanism is arranged on the fertilizing frame 107. The opening and closing mechanism includes a fixed frame 301, a flow discharge plate 302, and a second telescopic rod 303. The second telescopic rod 303 is fixedly connected to the side of the fertilizing frame 107 away from the pushing cart 101. A flow discharge plate 302 is slidably connected inside the fertilizing frame 107. The telescopic end of the second telescopic rod 303 is fixedly connected to the adjacent flow discharge plate 302. Two symmetrically distributed fixed frames 301 are fixedly connected to the middle part of the pushing cart 101. The fixed frames 301 are in extrusion fit with the adjacent flow discharge plates 302.

[0038] As Figure 9 shown, a flow discharge hole is formed in the middle of the flow discharge plate 302.

[0039] As Figure 8 shown, an inclined surface is provided at the lower part of the fixed frame 301.

[0040] When workers need to fertilize saline-alkali land for subsequent forage planting, they can first add solid fertilizer and water into the fertilizer tank 102 and mix them or directly add liquid fertilizer. Then, move the trolley 101 slowly and intermittently on the saline-alkali land. During this period, the double-shaft motor 103 can be started. The double-shaft motor 103 will drive the crankshaft 110 to rotate counterclockwise, and the counterclockwise rotation of the crankshaft 110 will drive components such as the lifting frame 104 to move up and down. When the fertilizing frame 107 moves downward with the lifting frame 104 and there are no substances such as stones in the soil below, since the bottom end of the fertilizing frame 107 is conical, there is a large frictional force between the fertilizing frame 107 and the lifting frame 104, and at this time, the clamping block 108 will limit the fertilizing frame 107 under the action of the first telescopic rod 202. Therefore, the fertilizing frame 107 can move downward smoothly and insert into the soil. And at this time, the flow-discharging plate 302 and the second telescopic rod 303 will also move downward with the fertilizing frame 107. The downward movement of the flow-discharging plate 302 will contact and be squeezed by the fixing frame 301, so that the flow-discharging plate 302 moves to the left and aligns the flow-discharging port with the pipeline of the fertilizing frame 107. The second telescopic rod 303 is then compressed, and the fertilizer in the fertilizer tank 102 will then flow through the fixed pipe 105 and the hose 106 to the fertilizing frame 107 and finally flow out from the discharging port 109. Since the discharging port 109 is located above the bottom end of the fertilizing frame 107, when the fertilizing frame 107 moves downward and inserts into the soil, the discharging port 109 is not easily in contact with the soil and blocked. Moreover, the opening direction of the discharging port 109 is obliquely downward, so the fertilizer in the fertilizer tank 102 can flow out from the discharging port 109 more easily under the action of its own gravity, thus enabling fertilization of the soil of the saline-alkali land. When components such as the lifting frame 104, the fertilizing frame 107, and the flow-discharging plate 302 move upward and reset, the flow-discharging plate 302 will separate from the fixing frame 301 and move to the right and reset under the action of the second telescopic rod 303. At this time, the flow-discharging port is no longer aligned with the pipeline of the fertilizing frame 107, and the fertilizer will not flow out from the discharging port 109 of the fertilizing frame 107, thus avoiding waste of fertilizer. When the fertilizing frame 107 moves downward with the lifting frame 104 and there are substances such as stones in the soil below, the fertilizing frame 107 and other components will be blocked by the stones and other substances and will no longer move downward, while the lifting frame 104 and the clamping block 108 and other components will continue to move downward. Therefore, the fertilizing frame 107 will move upward relative to the lifting frame 104 and the clamping block 108. The upward movement of the fertilizing frame 107 will contact and squeeze the clamping block 108, so that the clamping block 108 and the first fixing plate 201 move away from the fertilizing frame 107, and the first telescopic rod 202 is then stretched, thus avoiding hard collision and damage between the fertilizing frame 107 and stones and other substances. And since the fertilizing frame 107 fails to move downward smoothly and insert into the soil at this time, the flow-discharging plate 302 will not move downward and contact the fixing frame 301 either. Therefore, the fertilizer in the fertilizer tank 102 will not flow out from the discharging port 109 on the fertilizing frame 107.In this way, waste of fertilizer can be avoided. When the lifting frame 104 drives components such as the fertilizer application frame 107 to move upward and reset, since the fertilizer application frame 107 has slid upward relative to the lifting frame 104, the fertilizer application frame 107 will be blocked by the upper second fixing plate 203 during the upward movement, so it will move downward and reset relative to the lifting frame 104 and the clamping block 108. Then, the clamping block 108 will move reversely and reset under the action of the first telescopic rod 202 and insert into the card slot of the fertilizer application frame 107 to limit the fertilizer application frame 107. Embodiment 2

[0041] On the basis of Embodiment 1, as Figure 10 and Figure 11 shown, it further includes a pressurizing mechanism. The pressurizing mechanism is arranged on the trolley 101. The pressurizing mechanism includes a rotating frame 401, a pump 402, a piston frame 403, a third telescopic rod 404, an air inlet valve 405 and a one-way valve 406. The pump 402 is fixedly connected to the right part of the trolley 101. The piston frame 403 is slidably connected to the rear side inside the pump 402. The third telescopic rod 404 is fixedly connected to the top of the pump 402, and the telescopic end of the third telescopic rod 404 is fixedly connected to the piston frame 403. The output end on the right side of the dual-axis motor 103 is fixedly connected to the rotating frame 401, and the rotating frame 401 is in pressing cooperation with the piston frame 403. The air inlet valve 405 is fixedly connected to the upper part of the front side of the pump 402. A one-way valve 406 is fixedly connected and communicated between the pump 402 and the fixed pipe 105.

[0042] As Figure 1 and Figure 10 shown, it further includes a diversion frame 501. The diversion frame 501 is fixedly connected to the front side inside the fertilizer tank 102, and there is an arc surface on the left side of the diversion frame 501.

[0043] When the dual-axis motor 103 drives the crankshaft 110 to rotate counterclockwise and makes components such as the lifting frame 104 move to the lowest position, the dual-axis motor 103 will also drive the rotating frame 401 to rotate counterclockwise until it contacts and presses the piston frame 403, so that the piston frame 403 moves backward to the rearmost position. Immediately, the third telescopic rod 404 is stretched. When the piston frame 403 moves backward, it will suck external gas into the air pump 402 through the intake valve 405. If the fertilizing frame 107 is successfully inserted into the soil at this time and the drainage holes on the drainage plate 302 are aligned with the pipeline of the fertilizing frame 107, and the dual-axis motor 103 continues to drive the rotating frame 401 to rotate counterclockwise, the rotating frame 401 will separate from the piston frame 403. Immediately, the piston frame 403 will move forward and reset under the action of the third telescopic rod 404 and inject the gas in the air pump 402 into the fixed pipe 105 through the one-way valve 406. At this time, the gas in the fixed pipe 105 will flow in the direction of the hose 106 and the fertilizing frame 107, thereby increasing the water pressure of the fertilizer in the fixed pipe 105, the hose 106 and the fertilizing frame 107, so that the fertilizer can be sprayed out of the discharge port 109 more quickly and can better penetrate into the surrounding soil to improve the fertilization effect. If the fertilizing frame 107 is blocked by substances such as stones at this time and the drainage holes on the drainage plate 302 are not aligned with the pipeline of the fertilizing frame 107, and the dual-axis motor 103 continues to drive the rotating frame 401 to rotate counterclockwise and the gas in the air pump 402 is injected into the fixed pipe 105, the gas in the fixed pipe 105, unable to flow in the direction of the hose 106 and the fertilizing frame 107, will move to the right and enter the fertilizer tank 102. Since the diversion frame 501 is provided with an arc surface, the gas entering the fertilizer tank 102 will flow counterclockwise under the guidance of the diversion frame 501 and stir the fertilizer, thereby accelerating the dissolution of the solid fertilizer in the fertilizer tank 102 and preventing the liquid fertilizer from precipitating to improve the subsequent fertilization effect.

[0044] Although the present invention has been described with reference to exemplary embodiments, it should be understood that the present invention is not limited to the disclosed exemplary embodiments. The scope of the following claims should be given the broadest interpretation so as to cover all modifications as well as equivalent structures and functions.

Claims

1. A fertilizer applicator for planting forage grass in saline-alkali land, characterized by: The invention comprises a pushing vehicle (101), a fertilizer box (102), a double-axis motor (103), a lifting frame (104), a fixing pipe (105), a hose (106), a fertilizer frame (107), a clamping block (108), a material outlet (109), a crankshaft (110) and a reset assembly. The pushing vehicle (101) is fixedly connected to the fertilizer box (102). The pushing vehicle (101) is fixedly connected to the double-axis motor (103). The output end of one side of the double-axis motor (103) is fixedly connected to the crankshaft (110). The pushing vehicle (101) is slidably connected to the lifting frame (104). The crankshaft (110) is movably connected to the lifting frame (104). The lifting frame (104) is slidably connected to a pair of fertilizer frames (107) via a damping ring. The fertilizer frames (107) are provided with circumferential The lifting frame (104) is provided with a pair of clamping blocks (108) which are slidably connected. The fertilizer frame (107) is provided with a clamping slot for inserting the clamping block (108). The fertilizer frame (107) and the clamping block (108) are pressed and matched. The fertilizer box (102) is fixedly connected and communicated with a fixed pipe (105). The fixed pipe (105) and the pair of fertilizer frames (107) are fixedly connected and communicated with a hose (106). The lifting frame (104) is provided with a reset component, wherein the reset component comprises a first fixed plate (201), a first telescopic rod (202) and a second fixed plate (203). The pair of first telescopic rods (202) are fixedly connected to the lifting frame (104). The clamping block (108) is fixedly connected to the first fixed plate (201). The telescopic end of a telescopic rod (202) is fixedly connected to the first fixed plate (201), the pushing vehicle (101) is fixedly connected to a pair of second fixed plates (203), the second fixed plates (203) are pressed together with the fertilizer rack (107), and an opening and closing mechanism is also included. The opening and closing mechanism is arranged on the fertilizer rack (107), the opening and closing mechanism includes a fixed rack (301), a flow discharge plate (302) and a second telescopic rod (303), the second telescopic rod (303) is fixedly connected to the fertilizer rack (107), the fertilizer rack (107) is slidably connected to the flow discharge plate (302), the telescopic end of the second telescopic rod (303) is fixedly connected to the flow discharge plate (302), the pushing vehicle (101) is fixedly connected to a pair of fixed racks (301), the fixed racks (301) and the flow discharge plate (302) are pressed together. The invention also includes a pressurizing mechanism, which is arranged on the pushing vehicle (101), and includes a rotating frame (401), an air pump (402), a piston frame (403), a third telescopic rod (404), an air intake valve (405) and a one-way valve (406). The air pump (402) is fixedly connected to the pushing vehicle (101), the air pump (402) is slidably connected to the piston frame (403), the air pump (402) is fixedly connected to the third telescopic rod (404), the telescopic end of the third telescopic rod (404) is fixedly connected to the piston frame (403), the output end on the other side of the dual-axis motor (103) is fixedly connected to the rotating frame (401), the rotating frame (401) and the piston frame (403) are extrusion-matched, and the air pump (402) is fixedly connected to the air intake valve (405).A one-way valve (406) is fixedly connected and communicated between the air pump (402) and the fixed pipe (105).

2. A fertilizer applicator for saline-alkali land forage planting according to claim 1, characterized in that: Among them, fertilization One end of the frame (107) is conical.

3. A fertilizer applicator for saline-alkali land forage planting according to claim 2, characterized in that: The outlet The opening direction of (109) is obliquely downward.

4. A fertilizer applicator for saline-alkali land forage planting according to claim 3, characterized in that: The discharge plate (302) is provided with a discharge hole.

5. A fertilizer applicator for saline-alkali land forage planting according to claim 4, characterized in that: The fixed frame (301) is provided with an inclined surface.

6. A fertilizer applicator for saline-alkali land forage planting according to claim 5, characterized in that: It also includes a flow guide frame (501), the fertilizer box (102) is fixedly connected to the flow guide frame (501), and the flow guide frame (501) is provided with a curved surface.

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