Potato fertilizer, fertilizer manufacturing device and manufacturing method

Abstract

The invention discloses a potato fertilizer, and relates to the technical field of bio-fertilizers, the potato fertilizer comprises a fertilizer body, the two ends of the fertilizer body are of shrinking structures, the shrinking structures at the two ends are gradually widened and thickened in the direction close to each other, the shrinking structures are used for rapidly decomposing and releasing fertilizer efficiency, and the widened and thickened structures are used for slowly releasing the fertilizer efficiency; the invention further discloses a potato fertilizer preparation device which is used for preparing potato fertilizer. The invention further discloses a manufacturing method of the potato fertilizer manufacturing device, and the fertilizer body which is free of bubbles and capable of prolonging the fertilizer efficiency is formed through multi-stage downward pressing of the fertilizer raw materials. The potato fertilizer designed by the invention can slowly release nutrients for new root systems in the initial growth stage of potato seedlings to meet the growth requirements of the new root systems, and when the potato seedlings enter the healthy and strong stage of rapid growth, the nutrients contained in the widened and thickened parts of the fertilizer body are continuously released to meet the healthy and strong growth requirements of the potato seedlings; meanwhile, the fertilizer raw materials in the same forming groove are compacted in a multi-stage mode through the fertilizer making device, and the fertilizer efficiency period is prolonged to the maximum extent.

Description

Technical Field

[0001] The present invention relates to the technical field of biological fertilizers, and specifically to a potato fertilizer, a fertilizer manufacturing device and a manufacturing method. Background Art

[0002] Potatoes require various nutrients and minerals during the growth process. The selection and use of fertilizers are crucial for improving the yield and quality of potatoes. Fertilization is a very important link in potato production. Excessive fertilization is likely to burn the seedlings, while insufficient fertilization cannot meet the growth requirements. Whether fertilization is excessive or insufficient, it will affect the normal growth of potato roots.

[0003] However, in the existing processes, no fertilizer formula and fertilization process specifically for potatoes have been found. Almost all potato growers fertilize based on experience, and there is no way to control the amount of single fertilization. Basically, it is just scattered randomly, without strict control of more or less. For the effect on potatoes, the expected effect cannot be achieved. In addition, there is another deficiency in current fertilizers: most fertilizers are in spherical or ellipsoidal structures. When the newly germinated roots stretch during the initial growth stage of potatoes, they do not need to absorb a large amount of fertilizer nutrients. The spherical or ellipsoidal granular fertilizers release nutrients excessively, and the new roots cannot fully absorb them, easily resulting in the phenomenon of burning seedlings, and it will also cause waste of fertilizers. There is also a problem that it is easy to cause the fertilizer to release its fertilizer effect too quickly and shorten the fertilizer effect period, unable to meet the nutrient requirements of potatoes entering the vigorous growth stage. Summary of the Invention

[0004] The purpose of the present invention is to provide a potato fertilizer, a fertilizer manufacturing device and a manufacturing method to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A potato fertilizer includes a fertilizer body. Both ends of the fertilizer body are in a reduced structure, and the reduced structure at both ends gradually becomes wider and thicker in the direction of approaching each other. The reduced structure is used for quickly decomposing and releasing the fertilizer effect, and the wider and thicker setting is used for slowly releasing the fertilizer effect. A lateral extension part extends from the side wall of the fertilizer body, which is used to increase the local fertilization amount.

[0006] In a further embodiment, the fertilizer body is in a long strip structure, and multiple fertilizer bodies form a long strip fertilization area at the roots of the vegetation planted in rows.

[0007] In a further embodiment, the fertilizer body is in a hollow ring structure, and at least two reduced segments with reduced thickness are provided on the hollow ring structure. Break the fertilizer body at the reduced segment, then place it along the surrounding of the vegetation roots, and then form a ring structure again to form a ring fertilization area around the roots of a single large-diameter vegetation.

[0008] A potato fertilizer making device, used for making the potato fertilizer, is characterized in that it comprises: a body, a forming component is arranged in the body, the forming component has a side frame and a forming roller, the side frame is an open structure at the top and the bottom, the forming roller is installed on the two opposite side walls in the side frame, the opposite side walls of the forming roller in the horizontal direction are rotatably fitted with the inner wall of the side frame, and the space above the forming roller in the side frame is a material receiving space; The radial side wall of the forming roller is provided with a plurality of forming grooves, and the material receiving space is also provided with a material pressing piece, and the material pressing piece is adjusted up and down. When each forming groove passes under the material pressing piece, the material pressing piece enters the forming groove and presses the material in multiple stages; The forming roller is equipped with a material stripper, and the forming groove rotates with the forming roller. When the forming groove is misaligned with the material receiving space, the material stripper slides along the forming groove to push the material. A material guide piece is arranged directly below the forming roller, and the material guide piece receives the formed fertilizer body, and the material guide piece is in soft contact with the formed fertilizer. The material receiving component is arranged obliquely to guide the fertilizer out.

[0009] In a further embodiment, the side frame has two oppositely arranged support plates and two oppositely arranged bonding plates, the bottom ends of the bonding plates extend obliquely toward the side walls of the forming roller and are connected with elastic extension parts, and the elastic extension parts are bonded to the outer wall of the forming roller.

[0010] In a further embodiment, the material pressing member includes a pressing plate capable of rising and falling in the material receiving space and a plurality of pressing strips arranged on the bottom wall of the pressing plate, wherein the pressing strips enter the forming groove to press down the fertilizer raw material and squeeze out the bubbles between the fertilizer raw materials; The forming roller rotates, and each pressing strip repeatedly enters the same forming groove, and the material is pressed in multiple stages.

[0011] In a further embodiment, the stripper comprises a plurality of push rods and a push plate fixed between the ends of the plurality of push rods, the push plate being located in the forming groove and being able to slide along the forming groove; When the push plate is located in the forming groove near the center end of the forming roller, the space in the forming groove is used to receive the fertilizer raw material pressed in by the pressing piece; When the push plate is located at one end of the forming groove far away from the center of the forming roller, the fertilizer raw material in the forming groove is pushed out.

[0012] In a further embodiment, the forming roller is axially provided with a hollow cavity, a connecting rod is axially provided in the hollow cavity, and a top block with an arc-shaped structure is provided on the bottom wall of the connecting rod. When the push rod passes through the top block, it is pushed, driving the push plate to push the material along the forming groove.

[0013] In a further embodiment, a feeding hopper is provided on the upper end surface of the machine body, and a hollow mixing hopper is installed below the feeding hopper. The feeding hopper and the hollow mixing hopper form a feeding passage for feeding materials into the receiving space.

[0014] A method for manufacturing potato fertilizer includes the following steps: A1. Each pressing strip will repeatedly enter the same forming groove during pressing. During multi-stage pressing, the materials in the same forming groove will be pressed multiple times, squeezing the air bubbles between the fertilizer raw materials in the forming groove; A2. After the fertilizer body is formed in the forming groove, the forming groove rotates with the forming roller. When it is misaligned with the receiving space, the discharging member slides along the forming groove to push the materials; A3. The guiding sheet is made of fiber cloth or canvas with mesh holes. After the formed fertilizer falls on the guiding sheet, there is a soft contact between the fertilizer body and the guiding sheet; A4. At the same time, strong hot air is used to blow the guiding sheet, causing it to float in a wavy manner after being blown at the bottom. On the one hand, it dries the fertilizer body, and on the other hand, it can push the dried fertilizer body out.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: The potato fertilizer designed by the present invention can slowly release nutrients for the new roots at the initial stage of the growth of potato seedlings, meeting the growth requirements of the new roots. When the potato seedlings enter the vigorous growth stage of rapid growth, the nutrients contained in the widened and thickened parts of the fertilizer body continue to be released, meeting the growth requirements of the strong growth of potato seedlings; at the same time, the fertilizer manufacturing device is used to press the fertilizer raw materials in the same forming groove multiple times to compact them, producing a fertilizer body without air bubbles and with an extended fertilizer effect, maximizing the fertilizer effect period and meeting the growth requirements of potato seedlings. Description of the Drawings

[0016] Figure 1 It is a schematic diagram of the main structure of the present invention; Figure 2 It is a schematic diagram of the split structure of the forming part and the guiding sheet of the present invention; Figure 3 It is a state diagram of the guiding sheet being blown by hot air and fluctuating of the present invention; Figure 4 It is a partial schematic diagram of the assembly of the side frame and the forming roller of the present invention; Figure 5 It is a schematic diagram of the assembly structure of the pressing member and the forming roller of the present invention; Figure 6 It is a schematic diagram of the pressing member of the present invention; Figure 7 It is a schematic diagram of the forming roller of the present invention; Figure 8 It is a schematic diagram of the discharging member of the present invention; Figure 9 Cross-sectional view of the unloading part of the present invention installed inside the forming roller; Figure 10 Schematic structural diagram of the forming roller and the connecting rod device of the present invention; Figure 11 Schematic structural diagram of one kind of the fertilizer body of the present invention; Figure 12 Schematic diagram of a further improvement of one kind of the fertilizer body of the present invention; Figure 13 Schematic structural diagram of another kind of the fertilizer body of the present invention.

[0017] In the figure: 1, machine body; 11, inclined hopper; 2, receiving hopper; 21, hollow mixing hopper; 22, narrowing port; 3, backing plate; 31, fitting plate; 32, elastic extension part; 4, air blowing pipe; 5, guiding piece; 51, baffle; 6, forming roller; 61, pressing plate; 62, suspension rod; 63, pressing strip; 64, guiding sleeve; 65, cylindrical rod; 66, connecting rod; 67, top block; 68, push rod; 69, limiting disc; 610, pushing plate; 7, fertilizer body. Specific implementation mode

[0018] Next, the technical solutions in the embodiments of the present invention will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0019] Embodiment, this embodiment provides a potato fertilizer, as Figure 11 shown, including a fertilizer body 7. Both ends of the fertilizer body 7 are in a reduced structure, and the reduced structures at both ends are gradually widened and thickened in the direction of approaching each other. Because the content of the reduced structure is relatively small, and at the same time, its overall relative surface area is relatively large. The larger the relative surface area, the larger the contact area with the soil. Therefore, it decomposes and releases under the action of soil microorganisms, increasing the opportunity and speed of dissolution. The fertilizer period is short and is used for quickly decomposing and releasing fertilizer efficiency. When the new roots of potato seedlings extend, a small amount of nutrient components are needed. At this time, the nutrient components in the reduced structures at both ends quickly release nutrients in the soil. At the same time, because both ends of the fertilizer body 7 are in a reduced structure, its fertilizer amount is relatively small, which is more suitable for the absorption of new potato roots and the fertilizer amount requirement in the early stage, facilitating the growth of potato roots in the early stage.

[0020] When the potato seedlings enter the vigorous growth stage of rapid growth, they need to absorb more nutrients during the growth period. The two-ended shrinking structure of the fertilizer body 7 has been completely released during the new root system period and is completely absorbed and digested by the new root system. At this time, the widened and thickened parts will continue to release nutrients. The density of the widened and thickened parts in the middle is higher, slowing down the overall dissolution rate and enabling the nutrients to be released into the soil more stably. This design can reduce nutrient loss caused by rainwashing or irrigation, especially suitable for the long-term fertilizer supply requirements of base fertilizers. It can further supply sufficient nutrients required for plant growth and meet the needs of the plant for vigorous growth.

[0021] That is to say, the shrinking structure can be quickly released in the short term to meet the nutrient requirements for the early growth of potato seedlings. The widened and thickened design can extend the fertilizer efficiency duration of the fertilizer body 7 and meet the nutrient requirements for the middle and late growth of potato seedlings.

[0022] In addition, in order to increase the fertilizer efficiency, as Figure 12 shown, the side wall of the fertilizer body 7 extends with a lateral extension part for increasing the local fertilization amount and extending the duration of nutrient release of the fertilizer body 7.

[0023] The above-mentioned characteristics of the fertilizer body 7 are that it can be applied during the growth process of potato seedlings from small to large, slowly release nutrients in the soil, and more effectively meet the demand for fertilizer nutrients absorbed during the growth of potato seedlings from small to large.

[0024] Regarding the design of the shape and structure of the fertilizer body 7, the applicant found in the experimental field practice that when fertilizing potato seedlings planted in ridges, the method of sprinkling is basically used, and the fertilizer is released on the land to meet the growth requirements of the root system. Fertilizing in the way of sprinkling fertilizer is not targeted. It must be sprinkled near the root system, and it cannot ensure that all fertilizer particles are accurately delivered to the position near the root system, resulting in waste of a part of the fertilizer. Therefore, the fertilizer body 7 is set as a long strip structure here. When fertilizing, a plurality of fertilizer bodies 7 are arranged continuously in a straight line structure. The length of the long strip-shaped fertilizer body 7 can be controlled within the range of 5-15 cm, forming a long strip-shaped fertilization area at the roots of the vegetation planted in rows.

[0025] In addition, the fertilizer body 7 can also be set as a hollow ring structure, and at least two reduced-thickness reduced sections are provided on the hollow ring structure, as Figure 13As shown, the fertilizer body 7 is broken off at the reduced section, and then placed around the root system of the vegetation, and then formed into a ring structure again, forming a ring-shaped fertilization area around the root of a single large-diameter vegetation. This is not only for the fertilization needs of potato seedlings, but also for the fertilization needs of large-diameter trees. The inner diameter of the fertilizer body 7 can be set within the range of 10-30cm. The purpose of such a design is to form a ring-shaped release area around the root system, and the fertilizer and the root system are kept at an appropriate distance, such as a distance of 10-20cm, which is neither far away from the root system nor at an appropriate distance. As the fertilizer body 7 continuously releases fertilizer effect, it provides nutrients to the root system and avoids burning of seedlings.

[0026] The design of the fertilizer body 7 of the above two structures is a subversive improvement in structure compared with traditional fertilizers. It is not limited to the structural design of the traditional mung bean-sized granular fertilizer. The fertilization method is also substantially different from the traditional granular fertilizer spreading method. Whether it is a long strip structure or a ring structure, when fertilizing, the fertilizer body is directly placed near the root system of the seedlings to slowly release the fertilizer effect and achieve precise fertilization. Traditional fertilizer particles are directly sprinkled on the soil and released at will. Some seedling roots may obtain more nutrients, while others may obtain less nutrients, which ultimately leads to uneven production of seedlings and affects the fruiting rate.

[0027] It is further explained that the components of the above-mentioned granule body 7 include urea 12, cabbage leaves 9, wheat bran 5, lily 12, chicken manure 13, eggplant roots 5, water peanuts 6, reed roots 12 and calcium magnesium phosphate fertilizer 26. During production, the above-mentioned materials are mixed and pressed into a shape to produce a fertilizer that can improve soil properties and increase soil fertility, which can greatly improve the quality of plants. As a base fertilizer, it is applied once when the potatoes are ridged.

[0028] For this purpose, the present embodiment also discloses: a potato fertilizer making device for making potato fertilizer, specifically, Figure 1 and Figure 2 As shown, it includes: a machine body 1, a receiving hopper 2 and a hollow mixing hopper 21 installed below the receiving hopper 2 are arranged on the upper end surface of the machine body 1, the receiving hopper 2 and the hollow mixing hopper 21 form a feeding passage, a stirring roller with stirring teeth is built in the hollow mixing hopper 21, the fertilizer raw material penetrates from the receiving hopper 2 and falls into the hollow mixing hopper 21, the stirring roller stirs it, a narrowing port 22 is arranged at the bottom end of the hollow mixing hopper 21, and the feeding passage after stirring is opened from the narrowing port 22 for feeding the material into the receiving space. Alternatively, the fertilizer raw material can be pre-mixed in advance, and directly penetrated from the receiving hopper 2 into the hollow mixing hopper 21, and no longer mixed and stirred on the inner wall, and can be directly discharged from the narrowing port 22.

[0029] At the same time, a forming component is provided in the body 1, such as Figure 4 and Figure 7As shown in the figure, the forming part has a side frame and a forming roller 6. The upper and lower parts of the side frame are both open structures. The forming roller 6 is installed on the opposite side walls inside the side frame, and the opposite side walls of the forming roller 6 in the horizontal direction are rotationally fitted with the inner wall of the side frame. Specifically, the side frame has two relatively arranged backing plates 3 and two relatively arranged fitting plates 31. The bottom end of the fitting plate 31 extends obliquely towards the side wall of the forming roller 6 and is connected with an elastic extension part 32. The elastic extension part 32 is in contact with the outer wall of the forming roller 6. The elastic extension part 32 is designed with a stainless steel spring piece and is in real-time contact with the side wall of the forming roller 6 by using its own elasticity, so as to prevent fertilizer raw materials from detaching from the forming roller 6 without being formed, resulting in waste. The space above the forming roller 6 inside the side frame is set as a material receiving space. The fertilizer raw materials exported from the narrowing port 22 enter the material receiving space and wait for the forming operation.

[0030] A plurality of forming grooves are provided on the radial side wall of the forming roller 6. A pressing member is also provided in the material receiving space. The pressing member is adjusted up and down. When each forming groove passes under the pressing member, the pressing member enters the forming groove for multi-stage pressing. As Figure 5 and Figure 6 shown, the pressing member includes a pressing plate 61 that can move up and down in the material receiving space and a plurality of pressing bars 63 provided on the bottom wall of the pressing plate 61. A power rod is rotatably arranged between the two backing plates 3. A cam extending along the radial side wall of the power rod is provided on the power rod. A suspension rod 62 connected to the cam is provided on the upper end face of the pressing plate 61. In order to ensure the vertical up and down adjustment of the suspension rod 62, a guide plate slidably sleeved with the suspension rod 62 is provided between the two fitting plates 31. In this way, when the cam rotates and flips following the power rod, it can synchronously drive the suspension rod 62 to move up and down, and then drive the pressing plate 61 to move up and down relative to the forming roller 6. As Figure 2 shown, a large and a small gear disk are provided on the outside of one of the backing plates 3. A transmission belt is wound between the two gear disks. One of the gear disks is connected to an external power shaft, the small gear disk is connected to the power rod, and the large gear disk is connected to the forming roller 6 to achieve power transmission.

[0031] When the forming roller 6 rotates, the forming grooves will sequentially rotate past each pressing bar 63. The pressing plate 61 moves up and down, which can just drive the pressing bars 63 to sequentially enter the forming grooves of the forming roller 6, press down on the fertilizer raw materials, and squeeze out the air bubbles between the fertilizer raw materials. At the same time, the situation that the pressing bar 63 presses on the outer wall of the forming roller 6 will not occur. It should be emphasized that each pressing bar 63 presses down and repeats entering the same forming groove for multi-stage pressing. The advantage of this is that the same forming groove will be pressed down and pressed for multiple times, so that the formed fertilizer body 7 can be compact and there will be no air bubbles. After the fertilizer body 7 is fertilized, due to its compact texture, the fertilizer effect is slowly released, which can greatly extend the fertilizer effect period.

[0032] After the fertilizer body 7 is formed in the forming groove, it is necessary to discharge the material so that the forming groove can continue to be formed. It is also disclosed that the forming roller 6 is internally provided with a material discharging member. When the forming groove rotates with the forming roller 6 and is misaligned with the material receiving space, the material discharging member slides along the inside of the forming groove to push the material.

[0033] As Figure 8 and Figure 9 shown, the material discharging member includes a plurality of push rods 68 and a push plate 610 fixed between the ends of the plurality of push rods 68. The push plate 610 is located inside the forming groove and can slide along the inside of the forming groove. Specifically, a guiding sleeve 64 is also axially arranged inside the forming roller. A through hole for the push rod 68 to slide through is formed on the guiding sleeve 64. A limiting disk 69 is fixedly sleeved on the outer wall of the push rod 68. The limiting disk 69 is located between the outer wall of the guiding sleeve 64 and the inner wall of the forming roller 6. When the limiting disk 69 abuts against the outer wall of the guiding sleeve 64, the push plate 610 is located at one end of the forming groove close to the center of the forming roller 6. In this way, the space inside the forming groove is maximized for fertilizer forming. When the limiting disk 69 slides close to the forming groove following the push rod 68 and abuts against the inner wall of the forming roller 6, the push plate 610 is exactly located at one end of the forming groove far from the center of the forming roller 6. At this time, the fertilizer inside the forming groove can be completely pushed out.

[0034] It should be particularly noted that according to the strip-shaped structure or the annular structure of the fertilizer body 7, the shape structure of the forming groove is also provided with a strip-shaped structure and an annular structure. The structures of the corresponding pressing strip 63 and the push plate 610 are also designed equivalently to meet the forming requirements.

[0035] In order to realize automatic material discharging, a hollow cavity is axially provided in the plurality of push rods 68 in the forming roller 6. A connecting rod 66 is axially arranged in the hollow cavity. An arc-shaped top block 67 is provided on the bottom wall of the connecting rod 66. As Figure 10 shown, one end of the connecting rod 66 passing through the axial direction of the forming roller 6 is connected to the side wall of the backing plate 3 without a toothed disk. In this way, when the forming roller 6 rotates, the connecting rod 66 and the top block 67 do not rotate, and the top block 67 is located on the bottom wall of the connecting rod 66. In this way, when the push rod 68 rotates with the forming roller 6, a cylindrical rod 65 is fixed between one ends of the plurality of push rods 68 located inside the guiding sleeve 64. When passing through the top block 67, it will be pushed, driving the push plate 610 to push the material along the inside of the forming groove, so that the formed raw material can be completely discharged, realizing automatic material discharging.

[0036] That is, when the push plate 610 is located at one end of the forming groove close to the center of the forming roller 6, the space inside the forming groove is used to receive the fertilizer raw material pressed in by the pressing member; when the push plate 610 is located at one end of the forming groove far from the center of the forming roller 6, the fertilizer raw material inside the forming groove is pushed out.

[0037] Meanwhile, there is also a material guiding sheet 5 arranged directly below the forming roller 6. The material guiding sheet 5 receives the formed fertilizer body 7. The material guiding sheet 5 is in soft contact with the formed fertilizer. The material receiving component is inclined to export the fertilizer. Here, as Figure 3 shown, in order to ensure that the material guiding sheet 5 completely receives all the formed fertilizer bodies 7, baffles 51 are inclinedly connected to both side edges of the material guiding sheet 5. The baffles 51 are fixedly connected to the opposite side walls of the machine body 1. In this way, a material receiving area surrounded by enclosures can be formed.

[0038] The special design here is that the material guiding sheet 5 is made of fiber cloth or canvas with mesh holes. The formed fertilizer falls on the material guiding sheet 5 to avoid being broken due to hard contact. A hot air blower is arranged inside the machine body 1. The air outlet of the hot air blower is connected to a blowing air pipe 4 that is inclinedly distributed like the material guiding sheet 5. The blown air has blowing force and can blow the material guiding sheet 5, making its bottom float in a wave shape after being blown by the wind. On the one hand, it can dry the fertilizer body 7, and on the other hand, it can help push the fertilizer body 7 to the inclined hopper 11 arranged on the side of the machine body 1 to export the dried fertilizer body 7.

[0039] This embodiment also discloses a method for manufacturing potato fertilizer, including the following steps: A1. Each pressing strip 63 will repeatedly enter the same forming groove when pressing down, performing multi-stage pressing. The same forming groove will be pressed down multiple times to squeeze the air bubbles between the fertilizer raw materials in the forming groove. A2. After the fertilizer body 7 is formed in the forming groove, when the forming groove rotates with the forming roller 6 and is misaligned with the material receiving space, the material discharging part slides along the forming groove to push the material. A3. The material guiding sheet 5 is made of fiber cloth or canvas with mesh holes. The formed fertilizer falls on the material guiding sheet 5, and the fertilizer body 7 is in soft contact with the material guiding sheet 5. A4. At the same time, strong hot air is used to blow the material guiding sheet 5, making its bottom float in a wave shape after being blown by the wind. On the one hand, it dries the fertilizer body 7, and on the other hand, it can push the fertilizer body 7 to export the dried fertilizer body 7.

[0040] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirits of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A potato fertilizer, characterized in that: include: A fertilizer body (7), wherein the two ends of the fertilizer body (7) are narrowing structures, and the narrowing structures at the two ends are gradually widened and thickened in the direction of approaching each other, the narrowing structure is used for rapid decomposition and release of fertilizer effect in the early growth stage of potato seedlings, and the widening and thickening structure is used for slow release of fertilizer effect in the middle and late growth stages of potato seedlings; The side wall of the fertilizer body (7) is extended with a transverse extension portion, which is used to increase the local fertilization amount.

2. The potato fertilizer according to claim 1, characterized in that: The fertilizer body (7) is a long strip structure, and a plurality of fertilizer bodies (7) form a long strip fertilization area at the roots of vegetation planted in rows.

3. The potato fertilizer according to claim 1, characterized in that: The fertilizer body (7) is a hollow annular structure, and at least two reduced sections with reduced thickness are provided on the hollow annular structure. The fertilizer body (7) is broken at the reduced sections and then placed around the root system of the vegetation to form an annular structure again, thereby forming an annular fertilization area around the root of a single large-diameter vegetation.

4. A potato fertilizer making device, used for making the potato fertilizer according to any one of claims 1 to 3, characterized in that: include: A machine body (1), wherein a forming component is provided inside the machine body (1), wherein the forming component comprises a side frame and a forming roller (6), wherein the side frame is open at the top and the bottom, and the forming roller (6) is mounted on two opposite side walls inside the side frame, wherein the opposite side walls of the forming roller (6) in the horizontal direction are rotatably fitted with the inner wall of the side frame, and the space above the forming roller (6) inside the side frame is a material receiving space; The radial side wall of the forming roller (6) is provided with a plurality of forming grooves, and a material pressing piece is also provided in the material receiving space. The material pressing piece is adjusted up and down, and when each forming groove passes under the material pressing piece, the material pressing piece enters the forming groove and presses the material in multiple stages; The forming roller (6) is provided with a material stripping piece, and the forming groove rotates along with the forming roller (6). When the forming groove is misaligned with the material receiving space, the material stripping piece slides along the forming groove to push the material; A material guide sheet (5) is arranged directly below the forming roller (6), the material guide sheet (5) receives the formed fertilizer body (7), the material guide sheet is in soft contact with the formed fertilizer, and the receiving component is arranged at an angle to guide the fertilizer out.

5. The potato fertilizer making device according to claim 4, characterized in that: The side frame comprises two oppositely arranged support plates (3) and two oppositely arranged bonding plates (31); the bottom ends of the bonding plates (31) extend obliquely towards the side walls of the forming roller (6) and are connected to elastic extension parts (32); the elastic extension parts (32) are bonded to the outer wall of the forming roller (6).

6. The potato fertilizer making device according to claim 4, characterized in that: The material pressing member comprises a pressing plate (61) capable of rising and falling in the material receiving space, and a plurality of pressing strips (63) arranged on the bottom wall of the pressing plate (61), wherein the pressing strips (63) enter the forming groove to press down the fertilizer raw material and squeeze out the bubbles between the fertilizer raw materials; The forming roller (6) rotates, and each pressing strip (63) repeatedly enters the same forming groove to perform multi-stage pressing.

7. The potato fertilizer making device according to claim 4, characterized in that: The material stripping member comprises a plurality of push rods (68) and a push plate (610) fixed between the ends of the plurality of push rods (68), wherein the push plate (610) is located in the forming groove and is capable of sliding along the forming groove; When the push plate (610) is located in the forming groove near the center end of the forming roller (6), the space in the forming groove is used to receive the fertilizer raw material pressed in by the pressing piece; When the push plate (610) is located at an end of the molding groove away from the center of the molding roller (6), the fertilizer raw material in the molding groove is pushed out.

8. The potato fertilizer making device according to claim 7, characterized in that: The forming roller (6) is axially provided with a hollow cavity, a connecting rod (66) is axially provided in the hollow cavity, a top block (67) with an arc-shaped structure is provided on the bottom wall of the connecting rod (66), and the push rod (68) is pushed when passing through the top block (67), thereby driving the push plate (610) to push the material along the forming groove.

9. The potato fertilizer making device according to claim 4, characterized in that: The upper end surface of the machine body (1) is provided with a receiving hopper (2) and a hollow mixing hopper (21) installed below the receiving hopper (2); the receiving hopper (2) and the hollow mixing hopper (21) form a feeding passage, and the feeding passage is used to feed materials into the receiving space.

10. A method for preparing potato fertilizer, using the potato fertilizer preparation device according to claim 8, characterized in that: The steps include: A1. Each layering strip (63) is pressed down and repeatedly enters the same forming groove, and the material is pressed down for multiple times in the same forming groove, squeezing out the bubbles between the fertilizer raw materials in the forming groove; A2. After the fertilizer body (7) is formed in the forming groove, the forming groove rotates along with the forming roller (6). When the forming groove is misaligned with the material receiving space, the material removal part slides along the forming groove to push the material; A3, the guide sheet (5) is made of fiber cloth or canvas with mesh holes, and the formed fertilizer falls on the guide sheet (5), and the fertilizer body (7) and the guide sheet (5) are in soft contact; A4. At the same time, a strong hot wind is used to blow the guide sheet (5), so that the bottom thereof floats in a wave-like manner after being blown by the wind, thereby drying the fertilizer body (7) on the one hand, and pushing the fertilizer body (7) out after being dried on the other hand.

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