Fertilizer slow-release nutrient detection device and detection method

Abstract

The invention discloses a fertilizer slow-release nutrient detection device and method, and relates to the technical field of fertilizer detection.The fertilizer slow-release nutrient detection device comprises a detection platform, a supporting column is fixedly installed on one side of the detection platform, a detection piece is fixedly installed at the upper end of the supporting column, and fertilizer slow-release nutrients are detected through the detection piece; according to the fertilizer slow-release nutrient detection device and detection method, when the rotating shaft rotates, the arc-shaped plates fixedly mounted at the end part of the rotating shaft are synchronously driven to rotate, so that a gap is formed between every two arc-shaped plates, subsequent extraction of soil at different positions is facilitated, comparison with data recorded by a sensor is facilitated, and the accuracy of the detection mechanism is ensured.

Description

Technical Field

[0001] The present invention relates to the technology of fertilizer detection, and particularly to a device and method for detecting slow-release nutrients of fertilizers. Background Art

[0002] With the development of agricultural technology and people's awareness of environmental protection, the use of inorganic fertilizers has been gradually reduced, and the output of slow-release and controlled-release fertilizer products has soared. In the determination of the initial nutrient release rate, cumulative nutrient release rate, average release rate, nutrient release period, etc. of slow-release and controlled-release fertilizers, operations such as repeatedly mixing the leaching solution, extracting the leaching solution, adding water, and measuring according to time are required. This not only consumes manpower and time, but also has cumbersome operations.

[0003] In the Chinese invention patent with the publication number CN107505359A, a device and system for detecting slow-release nutrients of fertilizers are disclosed. The device and system for detecting slow-release nutrients of fertilizers have the following advantages: 1. Simple operation; 2. Independently control the temperature, and multiple samples can be automatically detected simultaneously; 3. Automatically display the nutrient release rate and release period of each component; 4. Graphically display the release rate, which is convenient for analyzing the coating material; 5. It can be in manual mode or automatic mode, and each parameter can be manually adjusted; 6. Easy to clean after use; 7. Large data storage capacity, power-off memory, and data will not be lost during power outage; 8. Network function for real-time monitoring, and data summary, analysis, and printing can be realized.

[0004] When the existing equipment is in use, different soil types, fertilizer types and their formulas may have different effects on the release speed and mode of fertilizers. If the flow control is unstable, it is easy to cause fluctuations in the flow rate, which may make the dissolution or release rate of fertilizer nutrients uneven. Furthermore, when measuring the nutrient release rate of slow-release fertilizers, it may mislead the research results and interfere with the accuracy of the detection. At the same time, during the detection process, samples cannot be automatically extracted at different depths and positions, resulting in deviations in the detection results. Therefore, a device and method for detecting slow-release nutrients of fertilizers are developed. Summary of the Invention

[0005] The purpose of the present invention is to provide a device and method for detecting slow-release nutrients of fertilizers to solve the above deficiencies in the prior art.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A device for detecting slow-release nutrients of fertilizers includes a detection platform. A support column is fixedly installed on one side of the detection platform, and a detection piece is fixedly installed at the upper end of the support column. The slow-release nutrients of fertilizers are detected by the detection piece. A movable piece is slidably installed on the upper end of the detection platform. At the same time, an extraction component is slidably installed at the lower end of the movable piece. The soil at different positions is collected by the extraction component. A control component, which is assembled at the lower end of the movable part, and controls the dissolution or release rate of fertilizer nutrients through the control component; Wherein, the extraction component includes a docking block slidably connected to the movable part, a ring is fixedly installed at the end of the docking block, a driving part is fixedly installed at the end of the ring, and the output end of the driving part penetrates and extends into the interior of the ring; A driving plate is fixedly installed at the output end of the driving part, a driving block is rotatably installed at the end of the driving plate, and at the same time, a movable plate is slidably installed on the outer surface of the driving block, and an adjusting block is rotatably installed at one end of the movable plate away from the driving block; A fixed cylinder is fixedly installed on the inner wall of the adjusting block, a plurality of rotating shafts are rotatably installed on the outer surface of the fixed cylinder, and the plurality of rotating shafts are evenly distributed on the outer surface of the fixed cylinder. At the same time, an arc-shaped plate is fixedly installed at the end of the rotating shaft, and the soil is collected through the arc-shaped plate.

[0007] As a further optimized solution of the present invention, a slot is opened at one end of the ring away from the driving part, a positioning shaft is rotatably installed on the inner wall of the slot, and the outer surface of the positioning shaft is rotatably connected to the inner wall of the movable plate.

[0008] As a further optimized solution of the present invention, a telescopic part is fixedly installed on the inner wall of the adjusting block, and an adjusting plate is fixedly installed at the output end of the telescopic part. An adjusting rod corresponding to the rotating shaft is rotatably installed at the lower end of the adjusting plate.

[0009] As a further optimized solution of the present invention, the end of the rotating shaft penetrates and extends into the interior of the fixed cylinder. At the same time, a rotating block is fixedly installed at the end of the rotating shaft, and the edge position of the end of the rotating block is rotatably connected to the end of the adjusting rod.

[0010] As a further optimized solution of the present invention, the control component includes a clamping block slidably connected to the movable part, a cylinder is clamped inside the clamping block, a rubber ball is clamped inside the cylinder, and a first elastic part is installed at the outer surface height of the rubber ball.

[0011] As a further optimized solution of the present invention, a piston block is slidably installed on the inner wall of the cylinder, and a moving block is fixedly installed at the end of the piston block. The end of the moving block is connected to the end of the first elastic part.

[0012] As a further optimized solution of the present invention, a lead-out pipe is fixedly installed at the end of the piston block, a disc is fixedly installed on the outer surface of the lead-out pipe, an extension part is fixedly installed at the end of the disc, and the end of the extension part is fixedly connected to the end of the cylinder.

[0013] As a further optimized solution of the present invention, a docking pipe is attached to the outer surface of the outlet pipe, and a second elastic member is fixedly installed on the inner wall of the docking pipe, and a pressing block is fixedly installed at the end of the second elastic member.

[0014] As a further optimized solution of the present invention, a clamping ring is slidably installed at the end of the docking pipe, and a third elastic member is fixedly installed at the end of the clamping ring, and the end of the third elastic member is fixedly connected to the outer surface of the docking pipe.

[0015] A method for detecting slow-release nutrients of fertilizers, using the detection device described in any one of the above, the detection method includes the following steps: S1. When the adjusting rod moves, since the rotating block is fixedly connected to the rotating shaft, and the end of the adjusting rod is rotatably connected to one side of the end of the rotating block, it is driven to rotate when the adjusting rod moves, and at the same time, the arc-shaped plate is synchronously driven to flip. S2. When the rotating shaft rotates, the arc-shaped plate fixedly installed at its end is synchronously driven to rotate, so that a gap is formed between every two arc-shaped plates, which is convenient for extracting soil at different positions later for comparison with the data recorded by the sensor, ensuring the accuracy of the detection mechanism. S3. When the piston block moves, the moving block fixedly installed at its end is driven to move synchronously. Since the end of the moving block is fixedly connected to the end of the first elastic member, when the piston block moves, the internal space of the cylinder is squeezed, so that the liquid in the cylinder is transmitted to the outside through the outlet pipe. After the liquid is exported, the piston block is pushed back to the initial position by the acting force of the first elastic member and the liquid is re-sucked, which is convenient for subsequent liquid export.

[0016] Compared with the prior art, a device and method for detecting slow-release nutrients of fertilizers provided by the present invention have the following beneficial effects: when the rotating shaft rotates, the arc-shaped plate fixedly installed at its end is synchronously driven to rotate, so that a gap is formed between every two arc-shaped plates, which is convenient for extracting soil at different positions later for comparison with the data recorded by the sensor, ensuring the accuracy of the detection mechanism.

[0017] Since the end of the clamping ring is connected to the end of the third elastic member, the clamping ring is tightly attached to the outer surface of the outlet pipe, so that the outlet pipe and the docking pipe are tightly attached.

[0018] Among them, nozzles of different specifications are provided at the end of the docking pipe, and different nozzles are adjusted according to the actual situation to make it applicable to different scenarios, so as to obtain the true release characteristics of the slow-release fertilizer and improve the evaluation of the experimental results and application effects. Description of the Drawings

[0019] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the accompanying drawings required for use in the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other accompanying drawings can also be obtained based on these drawings.

[0020] Figure 1 Schematic diagram of the overall structure provided by an embodiment of the present invention; Figure 2 Schematic diagram of the overall internal structure provided by an embodiment of the present invention; Figure 3 Schematic diagram of the extraction component structure provided by an embodiment of the present invention; Figure 4 First cross-sectional view of the internal structure of the extraction component provided by an embodiment of the present invention; Figure 5 Second cross-sectional view of the internal structure of the extraction component provided by an embodiment of the present invention; Figure 6 Schematic diagram of the regulation component structure provided by an embodiment of the present invention; Figure 7 First cross-sectional view of the internal structure of the regulation component provided by an embodiment of the present invention; Figure 8 Second cross-sectional view of the internal structure of the regulation component provided by an embodiment of the present invention.

[0021] Explanation of reference numerals: 1, detection platform; 2, extraction component; 3, regulation component; 11, support column; 12, detection piece; 13, movable piece; 21, ring; 211, slot hole; 212, positioning shaft; 213, docking block; 22, driving piece; 23, driving plate; 24, driving block; 25, movable plate; 26, adjusting block; 27, fixed cylinder; 28, telescopic piece; 281, adjusting plate; 282, adjusting rod; 283, rotating block; 29, rotating shaft; 291, arc-shaped plate; 31, clamping block; 32, cylinder; 33, rubber ball; 331, first elastic member; 34, piston block; 35, moving block; 36, outlet pipe; 37, extension piece; 371, disc; 38, docking pipe; 381, second elastic member; 382, pressing block; 39, clamping ring; 391, third elastic member. Detailed implementation manners

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. 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 creative efforts fall within the scope of protection of the present invention.

[0023] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention; the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. In addition, unless otherwise clearly specified and defined, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] Embodiment 1: Please refer to Figures 1-8 , a fertilizer slow-release nutrient detection device, including a detection platform 1. A support column 11 is fixedly installed on one side of the detection platform 1, and a detection piece 12 is fixedly installed at the upper end of the support column 11. The fertilizer slow-release nutrient is detected by the detection piece 12.

[0025] In this solution, components with telescopic functions such as electric telescopic rods are arranged on the inner wall of the support column 11. At the same time, multiple groups of sensors are arranged inside the detection platform 1 for recording the fertilizer slow-release nutrients and transmitting them to the inside of the detection piece 12. The detection piece 12 is a display platform for summarizing the data transmitted by the sensors, and then monitoring the status of the fertilizer slow-release nutrients in real time.

[0026] Furthermore, a movable part 13 is slidably installed at the upper end of the detection platform 1, and an extraction component 2 is slidably installed at the lower end of the movable part 13. The soil at different positions is collected by the extraction component 2. Among them, the extraction component 2 includes a docking block 213 slidably connected to the movable part 13. A circular ring 21 is fixedly installed at the end of the docking block 213, and a driving part 22 is fixedly installed at the end of the circular ring 21. The output end of the driving part 22 penetrates and extends into the inside of the circular ring 21.

[0027] In this embodiment, the movable part 13 is composed of a support plate and a guide block. At the same time, a guide groove is opened at the upper end of the detection platform 1, and the inner wall of the guide groove is slidably connected to the outer surface of the guide block. The support plate is fixedly installed on the guide block. An electric telescopic rod for driving the guide block is also arranged on the detection platform 1, so that the support plate can be freely adjusted to be suitable for different scenarios. An activity groove is opened at the lower end of the support plate to limit the extraction component 2 through the activity groove.

[0028] The outer surface of the docking block 213 is slidably connected to the inner wall of the movable groove, and at the same time, the docking block 213 is used to support the ring 21, so that the ring 21 remains stable.

[0029] The driving member 22 is a device with power output such as a motor, and is connected to an external control device. When the driving member 22 is started, it synchronously drives the driving plate 23 fixedly installed at its output end to rotate.

[0030] Furthermore, the output end of the driving member 22 is fixedly installed with a driving plate 23, the end of the driving plate 23 is rotatably installed with a driving block 24, and at the same time, the outer surface of the driving block 24 is slidably installed with a movable plate 25, and one end of the movable plate 25 away from the driving block 24 is rotatably installed with an adjusting block 26.

[0031] Specifically, when the driving plate 23 rotates, it drives the driving block 24 rotatably installed at its end to move. Since the outer surface of the driving block 24 is slidably connected to the inner wall of the movable plate 25, the movable plate 25 is driven to move.

[0032] The movable plate 25 is designed in a "T" shape, and an arc-shaped groove is opened at one end of the movable plate 25 close to the driving plate 23. The inner wall of the arc-shaped groove is slidably connected to the outer surface of the driving block 24.

[0033] A connecting block is fixedly installed at the upper end of the adjusting block 26, and at the same time, a fixing component such as a bolt is provided at the end of the connecting block to fix the end of the movable plate 25.

[0034] Furthermore, a fixing cylinder 27 is fixedly installed on the inner wall of the adjusting block 26. A plurality of rotating shafts 29 are rotatably installed on the outer surface of the fixing cylinder 27, and the plurality of rotating shafts 29 are evenly distributed on the outer surface of the fixing cylinder 27. At the same time, an arc-shaped plate 291 is fixedly installed at the end of the rotating shaft 29, and the soil is collected by the arc-shaped plate 291.

[0035] Specifically, when the rotating shaft 29 rotates, it synchronously drives the arc-shaped plate 291 fixedly installed at its end to rotate, so that a gap is formed between every two arc-shaped plates 291, which is convenient for extracting soil at different positions later, comparing it with the data recorded by the sensor, and ensuring the accuracy of the detection mechanism.

[0036] Furthermore, a slot hole 211 is opened at one end of the ring 21 away from the driving member 22. A positioning shaft 212 is rotatably installed on the inner wall of the slot hole 211, and the outer surface of the positioning shaft 212 is rotatably connected to the inner wall of the movable plate 25.

[0037] Specifically, the movable plate 25 is limited by the positioning shaft 212. When the movable plate 25 is forced to rotate, it rotates around the positioning shaft 212, and then the fixing cylinder 27 arranged at the end of the movable plate 25 is adjusted to move until it reaches the appropriate position and stops.

[0038] Further, a telescopic member 28 is fixedly installed on the inner wall of the adjusting block 26, and an adjusting plate 281 is fixedly installed at the output end of the telescopic member 28. An adjusting rod 282 corresponding to the rotating shaft 29 is rotatably installed at the lower end of the adjusting plate 281.

[0039] Specifically, the telescopic member 28 is a component with a telescopic function such as an electric telescopic rod, and is connected to an external control device. When the telescopic member 28 is activated, it drives the adjusting plate 281 fixedly installed at its output end to move. Since the adjusting rod 282 is rotatably installed at the lower end of the adjusting plate 281, the adjusting rod 282 moves synchronously with the adjusting plate 281.

[0040] Further, the end of the rotating shaft 29 penetrates and extends into the inside of the fixed cylinder 27. At the same time, a rotating block 283 is fixedly installed at the end of the rotating shaft 29, and the edge position of the end of the rotating block 283 is rotatably connected to the end of the adjusting rod 282.

[0041] Specifically, when the adjusting rod 282 moves, since the rotating block 283 is fixedly connected to the rotating shaft 29, and the end of the adjusting rod 282 is rotatably connected to one side of the end of the rotating block 283, the rotating block 283 is driven to rotate when the adjusting rod 282 moves, and at the same time, the arc-shaped plate 291 is synchronously driven to flip.

[0042] Further, a control assembly 3 is assembled at the lower end of the movable member 13 to control the dissolution or release rate of the fertilizer nutrients; the control assembly 3 includes a clamping block 31 slidably connected to the movable member 13. A cylinder 32 is clamped inside the clamping block 31, a rubber ball 33 is clamped inside the cylinder 32, and a first elastic member 331 is installed at the outer surface height of the rubber ball 33.

[0043] In this embodiment, the outer surface of the clamping block 31 is slidably connected to the inner wall of the movable groove at the lower end of the movable member 13, so that the control assembly 3 can adjust its position according to the actual situation and be applicable to different scenarios.

[0044] The outer surface of the rubber ball 33 fits with the inner wall of the cylinder 32, so that the two ends of the cylinder 32 are separated, and the rubber ball 33 is limited by the first elastic member 331 to ensure the stability of the rubber ball 33. The first elastic member 331 is a component with elasticity such as a spring.

[0045] Further, a piston block 34 is slidably installed inside the cylinder 32. A moving block 35 is fixedly installed at the end of the piston block 34, and the end of the moving block 35 is connected to the end of the first elastic member 331. A lead-out pipe 36 is fixedly installed at the end of the piston block 34. A disc 371 is fixedly installed on the outer surface of the lead-out pipe 36. An extension member 37 is fixedly installed at the end of the disc 371, and the end of the extension member 37 is fixedly connected to the end of the cylinder 32.

[0046] Specifically, when the piston block 34 moves, it drives the moving block 35 fixedly installed at its end to move synchronously. Since the end of the moving block 35 is fixedly connected to the end of the first elastic member 331, when the piston block 34 moves, it squeezes the internal space of the cylinder 32, causing the liquid inside the cylinder 32 to be transmitted to the outside through the outlet pipe 36.

[0047] One end of the cylinder 32 is connected to an external solution collection cylinder, and then it is conducted to the upper end of the fertilizer through the cylinder 32 to simulate the slow release state of the fertilizer when there is sufficient moisture. At the same time, when the piston block 34 moves, it squeezes the internal space of the cylinder 32, causing the liquid inside the cylinder 32 to be transmitted to the soil at the upper end of the fertilizer through the outlet pipe 36, and adjusting the solution release rate according to the actual situation to meet the requirements in different environments.

[0048] After the liquid is exported, the piston block 34 is pushed back to the initial position by the action of the first elastic member 331 and re - sucks the liquid, facilitating the subsequent export of the liquid.

[0049] The extension member 37 is a device with a telescopic function such as an electric telescopic rod and is connected to an external control device. The extension member 37 drives the disc 371 to move and synchronously drives the outlet pipe 36 to move.

[0050] Further, a docking pipe 38 is attached to the outer surface of the outlet pipe 36, and a second elastic member 381 is fixedly installed on the inner wall of the docking pipe 38. The end of the second elastic member 381 is fixedly installed with a pressing block 382.

[0051] Specifically, the second elastic member 381 is an elastic component such as a spring. The pressing block 382 is supported by the second elastic member 381, so that when the docking pipe 38 is docked with the outlet pipe 36, it is limited by the pressing block 382.

[0052] Further, a clamping ring 39 is slidably installed at the end of the docking pipe 38, and a third elastic member 391 is fixedly installed at the end of the clamping ring 39. The end of the third elastic member 391 is fixedly connected to the outer surface of the docking pipe 38.

[0053] Specifically, the third elastic member 391 is an elastic component such as a spring. Since the end of the clamping ring 39 is connected to the end of the third elastic member 391, the clamping ring 39 tightly fits on the outer surface of the outlet pipe 36, making the outlet pipe 36 and the docking pipe 38 fit tightly.

[0054] The end of the docking pipe 38 is provided with nozzles of different specifications, and different nozzles are adjusted according to the actual situation to make it suitable for different scenarios.

[0055] The control device can select a single-chip microcomputer as the control terminal. In this embodiment, the single-chip microcomputer is a typical embedded microcontroller (Micro controller Unit), which is composed of an arithmetic unit, a controller, a memory, input and output devices, etc., and is equivalent to a microcomputer. Compared with the general-purpose microprocessor used in personal computers, it emphasizes more on self-supply (without external hardware) and cost savings. Its greatest advantage is its small size, which can be placed inside the instrument, but it has a small storage capacity, simple input and output interfaces, and low power consumption.

[0056] Embodiment 2: A method for detecting slow-release nutrients of fertilizers. Using the detection device of any one of the above, the detection method includes the following steps: S1. When the adjusting rod 282 moves, since the rotating block 283 is fixedly connected to the rotating shaft 29, and the end of the adjusting rod 282 is rotatably connected to one side of the end of the rotating block 283, when the adjusting rod 282 moves, it drives the rotating block 283 to rotate, and at the same time synchronously drives the arc-shaped plate 291 to flip. S2. When the rotating shaft 29 rotates, it synchronously drives the arc-shaped plate 291 fixedly installed at its end to rotate, so that a gap is formed between every two arc-shaped plates 291, which is convenient for extracting soil at different positions subsequently for comparison with the data recorded by the sensor to ensure the accuracy of the detection mechanism. S3. When the piston block 34 moves, it drives the moving block 35 fixedly installed at its end to move synchronously. Since the end of the moving block 35 is fixedly connected to the end of the first elastic member 331, when the piston block 34 moves, it squeezes the internal space of the cylinder 32, so that the liquid in the cylinder 32 is transmitted to the outside through the outlet pipe 36. After the liquid is exported, the piston block 34 is pushed back to the initial position by the acting force of the first elastic member 331 and liquid is inhaled again, which is convenient for subsequent liquid export.

[0057] Only some exemplary embodiments of the present invention have been described by way of illustration above. Undoubtedly, for those of ordinary skill in the art, without departing from the spirit and scope of the present invention, the described embodiments can be modified in various different ways. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the protection scope of the claims of the present invention.

Claims

1. A fertilizer slow-release nutrient detection device, characterized in that, It includes a detection platform (1). On one side of the detection platform (1), a support column (11) is fixedly installed. At the upper end of the support column (11), a detection piece (12) is fixedly installed. The detection piece (12) is used to detect the slow-release nutrients of fertilizers. A movable piece (13) is slidably installed at the upper end of the detection platform (1). At the same time, an extraction assembly (2) is slidably installed at the lower end of the movable piece (13). The extraction assembly (2) is used to collect soils at different positions. A regulation assembly (3) is assembled at the lower end of the movable piece (13). The regulation assembly (3) is used to control the dissolution or release rate of fertilizer nutrients. Among them, the extraction assembly (2) includes a docking block (213) slidably connected to the movable piece (13). At the end of the docking block (213), a ring (21) is fixedly installed. At the end of the ring (21), a driving piece (22) is fixedly installed. The output end of the driving piece (22) penetrates and extends into the interior of the ring (21). At the output end of the driving piece (22), a driving plate (23) is fixedly installed. At the end of the driving plate (23), a driving block (24) is rotatably installed. At the same time, a movable plate (25) is slidably installed on the outer surface of the driving block (24). At the end of the movable plate (25) away from the driving block (24), an adjusting block (26) is rotatably installed. A fixed cylinder (27) is fixedly installed on the inner wall of the adjusting block (26). A plurality of rotating shafts (29) are rotatably installed on the outer surface of the fixed cylinder (27). And the plurality of rotating shafts (29) are evenly distributed on the outer surface of the fixed cylinder (27). At the same time, at the end of the rotating shaft (29), an arc-shaped plate (291) is fixedly installed. The arc-shaped plate (291) is used to collect soils.

2. The fertilizer slow-release nutrient detection device according to claim 1, characterized in that, At one end of the ring (21) away from the driving piece (22), a slot hole (211) is opened. On the inner wall of the slot hole (211), a positioning shaft (212) is rotatably installed. And the outer surface of the positioning shaft (212) is rotatably connected to the inner wall of the movable plate (25).

3. The fertilizer slow-release nutrient detection device according to claim 2, characterized in that, A telescopic piece (28) is fixedly installed on the inner wall of the adjusting block (26). And at the output end of the telescopic piece (28), an adjusting plate (281) is fixedly installed. At the lower end of the adjusting plate (281), an adjusting rod (282) corresponding to the rotating shaft (29) is rotatably installed.

4. The fertilizer slow-release nutrient detection device according to claim 3, characterized in that, The end of the rotating shaft (29) penetrates and extends into the interior of the fixed cylinder (27). At the same time, at the end of the rotating shaft (29), a rotating block (283) is fixedly installed. The edge position at the end of the rotating block (283) is rotatably connected to the end of the adjusting rod (282).

5. The fertilizer slow-release nutrient detection device according to claim 1, characterized in that, The regulation assembly (3) includes a clamping block (31) slidably connected to the movable piece (13). A cylinder (32) is clamped inside the clamping block (31). A rubber ball (33) is clamped inside the cylinder (32). And a first elastic piece (331) is installed on the outer surface of the rubber ball (33) at a certain height.

6. The fertilizer slow-release nutrient detection device according to claim 5, wherein, A piston block (34) is slidably mounted on the inner wall of the cylinder (32), and a moving block (35) is fixedly mounted at the end of the piston block (34). The end of the moving block (35) is connected to the end of the first elastic member (331).

7. A fertilizer slow-release nutrient detection device according to claim 6, wherein, A lead-out pipe (36) is fixedly mounted at the end of the piston block (34). A disc (371) is fixedly mounted on the outer surface of the lead-out pipe (36). An extension member (37) is fixedly mounted at the end of the disc (371), and the end of the extension member (37) is fixedly connected to the end of the cylinder (32).

8. A fertilizer slow-release nutrient detection device according to claim 7, characterized in that, A docking pipe (38) is attached to the outer surface of the lead-out pipe (36), and a second elastic member (381) is fixedly mounted on the inner wall of the docking pipe (38). A pressing block (382) is fixedly mounted at the end of the second elastic member (381).

9. The fertilizer slow-release nutrient detection device according to claim 8, characterized in that, A clamping ring (39) is slidably mounted at the end of the docking pipe (38), and a third elastic member (391) is fixedly mounted at the end of the clamping ring (39). The end of the third elastic member (391) is fixedly connected to the outer surface of the docking pipe (38).

10. A method for detecting slow-release nutrients of fertilizers, characterized in that, Using the detection device according to any one of claims 1-9, the detection method includes the following steps: S1. When the adjusting rod (282) moves, since the rotating block (283) is fixedly connected to the rotating shaft (29), and the end of the adjusting rod (282) is rotatably connected to one side of the end of the rotating block (283), when the adjusting rod (282) moves, the rotating block (283) is driven to rotate, and at the same time, the arc plate (291) is synchronously driven to flip. S2. When the rotating shaft (29) rotates, the arc plate (291) fixedly mounted at its end is synchronously driven to rotate, so that a gap is formed between every two arc plates (291), which is convenient for extracting soil at different positions subsequently for comparison with the data recorded by the sensor, ensuring the accuracy of the detection mechanism. S3. When the piston block (34) moves, the moving block (35) fixedly mounted at its end is driven to move synchronously. Since the end of the moving block (35) is fixedly connected to the end of the first elastic member (331), when the piston block (34) moves, the internal space of the cylinder (32) is squeezed, so that the liquid in the cylinder (32) is transmitted to the outside through the lead-out pipe (36). After the liquid is led out, the piston block (34) is pushed back to the initial position by the action of the first elastic member (331), and the liquid is re-sucked, which is convenient for subsequent liquid to be led out.

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