Visual crop nutrient absorption amount detection device

Abstract

The invention relates to the technical field of crop detection, and discloses a visual crop nutrient absorption amount detection device which comprises a base, an electric telescopic rod is fixed to the top of the base, a top plate is fixed to the top of the electric telescopic rod, and a cover cylinder is fixed to the surface of the top plate. According to the visual crop nutrient absorption amount detection device, through the arrangement of the cleaning assembly, when the surface of the cover cylinder needs to be cleaned, a motor is started, a reciprocating lead screw rotates, a fixed disc does up-down reciprocating linear motion, and when the fixed disc moves downwards, the fixed disc is driven to rotate, so that the surface of the cover cylinder can be cleaned, and the visual crop nutrient absorption amount can be detected. The surface of the cleaning block is attached to the surface of the cover cylinder, soil and dust attached to the surface of the cover cylinder can be cleaned, when the fixing disc drives the cleaning block to move upwards, the cleaning block cannot be attached to the surface of the cover cylinder through the linkage assembly, manual cleaning by personnel is not needed, the motor works continuously, the surface of the cover cylinder can be cleaned continuously, and efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of crop detection, and in particular to a device for detecting the amount of nutrient absorption of visualized crops. Background Art

[0002] The distribution of nitrogen in plants is concentrated in the most active parts of life activities, and its supply and nutritional status have a great impact on plant growth and development. Some crops have a high demand for nitrogen during their growth stages. Ensuring nitrogen nutrition can promote growth and increase yields, but nitrogen may also be lost through secretion, volatilization, etc., especially from flowering to maturity at the top of the crop. In actual production, crops may have insufficient or excessive nitrogen nutrition. Insufficient nitrogen nutrition manifests as short plants, abnormal leaf color, few root branches, and reduced tillering, while excessive nitrogen nutrition manifests as lush growth, hindered reproductive organ development, and susceptibility to pests and diseases, which ultimately leads to reduced crop yields.

[0003] According to a disclosed detection device for visually observing the nutrient absorption of crops (publication number: CN113588643B), in the above application, a driving mechanism is used to control the cover cylinder to move downward to cover the periphery of the crops, so that the crops together with the soil of the root system can be lifted up together and observed conveniently. Then, the soil of the root system of the crops can be quickly dried by the heater on the side wall of the cover cylinder, and then the nutrients are transported to the crops through the feed pipe, so that it is easier to know the nutrient absorption of the crops in the case of dry soil. In this way, fertilizers can be applied when the crops are in urgent need of water and nutrients, and the nutrient absorption of the crops can be intuitively known, which effectively solves the technical problem in the prior art that the nutrient absorption of the crops cannot be directly observed.

[0004] However, in the above application, after long-term use, dust, dirt and other impurities will adhere to the surface of the cover tube of the equipment, which will affect the accuracy and reliability of the detection. The above cleaning of the cover tube surface can only be done by manual cleaning and wiping, which is not only time-consuming and labor-intensive, but also increases labor costs. Manual cleaning also has the problem of incomplete cleaning, resulting in impurities remaining, which further affects the detection results. Summary of the invention

[0005] The purpose of the present invention is to provide a device for visualizing the detection of the nutrient absorption of crops, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a device for visualizing the amount of nutrient absorption of crops, comprising a base, a top of the base is fixed with an electric telescopic rod, a top plate is fixed with a top of the electric telescopic rod, a cover tube is fixed with a surface of the top plate, a cleaning component for conveniently cleaning the surface of the cover tube, a linkage component for preventing dust from moving, and a collection component for uniformly collecting the cleaned dust are arranged on the surfaces of the base and the top plate, and the cleaning component comprises:

[0007] The motor is fixed on the top of the top plate, the output shaft of the motor passes through the top plate, a reciprocating screw is fixed at the bottom of the output shaft of the motor, and a long rod is fixed at the bottom of the top plate.

[0008] Preferably, the cleaning assembly also includes a fixed disk, the fixed disk is penetrated by the reciprocating screw rod, and the fixed disk is threadedly connected to the reciprocating screw rod, the long rod penetrates the fixed disk, and the long rod is slidably connected to the fixed disk, a cavity is opened inside the fixed disk, the inner wall of the cavity is rotatably connected with a circular plate, the surface of the circular plate is opened with a resistance hole 1, the inner wall of the resistance hole 1 is in resistance with a resistance rod 1, a cleaning block is fixed to the surface of the resistance rod 1, the bottom of the cleaning block is fixed with a resistance rod 2, and the bottom of the fixed disk is opened with a resistance The cleaning block is provided with six groups, and the six groups of cleaning blocks are arranged in a circular array with the center of the fixed disk as the axis. The motor is turned on, the reciprocating screw rotates, and the fixed disk reciprocates up and down in a straight line. When the fixed disk moves down, the surface of the cleaning block fits with the surface of the cover tube, so the dirt and dust adhered to the surface of the cover tube can be cleaned. When the fixed disk drives the cleaning block to move up, the cleaning block can be prevented from fitting with the surface of the cover tube through the linkage assembly provided.

[0009] Preferably, the linkage assembly includes a threaded rod, the threaded rod is fixed to the surface of one of the six groups of cleaning blocks, one end of the threaded rod away from the cleaning block passes through a fixed plate, the surface of the fixed plate is rotatably connected with a gear, the gear is penetrated by the threaded rod, and gear one is threadedly connected to the threaded rod, the surface of the top plate is provided with a rack, the rack passes through the top plate, and the rack is slidably connected to the top plate, the rack meshes with the gear, the top of the rack is fixed with a fixed plate, and the top of the base is fixed with an L-shaped plate. When the fixed plate is at the bottom, the bottom of the rack contacts the surface of the base, and the cleaning block moves away from the center of the fixed plate through the threaded rod and the gear, and each cleaning block no longer fits the surface of the cover cylinder through the circular plate, the first contact hole, the first contact rod, the second contact rod, and the second contact hole. When the fixed plate is located at the top of the cover cylinder, the top of the fixed plate contacts the bottom of the L-shaped plate, the rack moves down, and the gear reverses. At this time, the threaded rod drives the cleaning block to move close to the cover cylinder, and the cleaning block fits the surface of the cover cylinder.

[0010] Preferably, the collecting assembly includes a collecting plate, which is placed on the surface of the base, a fixed frame is fixed on the surface of the collecting plate, a receiving groove is provided on the top of the fixing frame, a connecting rod is hinged on the inner side of the receiving groove, a sliding groove is provided on the top of the connecting rod, and a movable rod is slidably connected to the inner wall of the sliding groove, the top of the movable rod is hinged to the bottom of the fixing plate, the bottom of the movable rod is fixed with a spring, the bottom of the spring is fixed to the inner wall of the sliding groove, when the fixing plate moves downward with the reciprocating screw rod, the movable rod moves downward, the connecting rod and the fixed frame are offset at an angle, driving the fixed frame and the collecting plate to move close to the cover tube, so that the collecting plate is located below the cover tube, and when the fixing plate moves upward, the spring drives the connecting rod, the fixed frame and the collecting plate to reset.

[0011] Preferably, the first abutment hole is arranged in an arc shape, and when the circular plate rotates, it can drive the first abutment rod and the cleaning block to move synchronously.

[0012] Preferably, the fixing plate is penetrated by the cover tube, which will not affect the normal movement of the fixing plate and is convenient for cleaning.

[0013] Preferably, a liquid storage tank is fixed on the top of the base, a feed port is opened on the top of the liquid storage tank, a pump body is fixed on the top of the cover cylinder, a conduit is fixed on the suction end of the pump body, the end of the conduit away from the pump body passes through the liquid storage tank, the suction end of the pump body passes through the cover cylinder, and a connecting pipe is fixed to the suction end of the pump body, a nozzle is installed on the surface of the connecting pipe, and a heating plate is installed on the top of the inner wall of the cover cylinder, so that fertilizer can be applied when crops are in urgent need of water and nutrients, and the absorption of nutrients by crops can be intuitively known.

[0014] Preferably, the fixed frame, connecting rod, movable rod and spring are each provided in two groups, and the two groups of fixed frames, connecting rods, movable rods and springs are symmetrically arranged with the center line of the cover cylinder as the axis of symmetry, thereby improving the stability of the collection plate movement.

[0015] Preferably, the collecting plate has a diameter larger than the cover tube, and can receive fallen dust and dirt.

[0016] Compared with the prior art, the present invention provides a device for visualizing the detection of nutrient absorption of crops, which has the following beneficial effects:

[0017] 1. The visual detection device for the amount of nutrient absorption of crops has a cleaning component set up. When it is necessary to clean the surface of the cover barrel, the motor is turned on, the reciprocating screw rotates, and the fixed plate reciprocates and moves linearly up and down. When the fixed plate moves down, the surface of the cleaning block fits with the surface of the cover barrel, so the dirt and dust adhering to the surface of the cover barrel can be cleaned. When the fixed plate drives the cleaning block to move up, the linkage component set up can prevent the cleaning block from fitting with the surface of the cover barrel, and manual cleaning is not required. The motor continues to work, and the surface of the cover barrel can be continuously cleaned, thereby improving efficiency.

[0018] 2. The visual detection device for the amount of nutrient absorption of crops has a linkage component set up. When the fixed disk is located at the bottom, the bottom of the rack contacts the surface of the base, and the cleaning block is moved away from the center of the fixed disk through the threaded rod and the gear. Through the circular plate, the first contact hole, the first contact rod, the second contact rod and the second contact hole, each cleaning block is no longer in contact with the surface of the cover barrel. When the fixed disk is located at the top of the cover barrel, the top of the fixed plate contacts the bottom of the L-shaped plate, the rack moves down, and the gear reverses. At this time, the threaded rod drives the cleaning block to move close to the cover barrel, and the cleaning block is in contact with the surface of the cover barrel, which can prevent the cleaning block from moving dust and soil synchronously, and avoid incomplete cleaning. The cleaning block can clean the surface of the cover barrel only when it moves down.

[0019] 3. The visual detection device for the nutrient absorption of crops has a collecting component set up. When the fixed plate moves downward with the reciprocating screw rod, the movable rod moves downward, and the connecting rod and the fixed frame are offset at an angle, driving the fixed frame and the collecting plate to move closer to the cover barrel, so that the collecting plate is located below the cover barrel. At this time, the dust and soil that have fallen can be collected to prevent the dust and soil from being scattered to other places. The personnel only need to clean the collecting plate regularly. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a front view structural schematic diagram of the present invention;

[0021] Figure 2 It is a bottom view structural schematic diagram of the present invention;

[0022] Figure 3 It is a side view structural schematic diagram of the present invention;

[0023] Figure 4 It is a partial bottom view structural schematic diagram of the present invention;

[0024] Figure 5 It is a schematic diagram of the partial internal structure of the present invention;

[0025] Figure 6 It is a partial side view structural schematic diagram of the present invention;

[0026] Figure 7 It is a schematic diagram of the partial cross-sectional structure of the present invention.

[0027] In the figure: 1. base; 2. electric telescopic rod; 3. top plate; 4. cover tube; 5. liquid storage tank; 6. feed port; 10. conduit; 11. pump body; 12. connecting pipe; 13. heating plate; 7. cleaning assembly; 70. motor; 71. reciprocating screw rod; 72. fixed plate; 73. cavity; 74. round plate; 75. interference hole one; 76. interference rod one; 77. interference rod two; 78. interference hole two; 79. cleaning block; 700. long rod; 8. linkage assembly; 80. threaded rod; 81. gear; 82. rack; 83. fixed plate; 84. L-shaped plate; 9. collecting assembly; 90. collecting plate; 91. fixed frame; 92. receiving groove; 93. connecting rod; 94. slide groove; 95. movable rod; 96. spring. DETAILED DESCRIPTION

[0028] like Figure 1-7 As shown, the present invention provides a technical solution: a visual detection device for the amount of nutrient absorption of crops, comprising a base 1, an electric telescopic rod 2 is fixed on the top of the base 1, a top plate 3 is fixed on the top of the electric telescopic rod 2, a cover tube 4 is fixed on the surface of the top plate 3, and the surfaces of the base 1 and the top plate 3 are provided with a cleaning component 7 for conveniently cleaning the surface of the cover tube 4, a linkage component 8 for preventing dust from moving, and a collection component 9 for uniformly collecting the cleaned dust, the cleaning component 7 comprises: a motor 70, the motor 70 is fixed on the top of the top plate 3, the output shaft of the motor 70 passes through the top plate 3, a reciprocating screw rod 71 is fixed at the bottom of the output shaft of the motor 70, a long rod 700 is fixed at the bottom of the top plate 3, the cleaning component 7 also comprises a fixed disk 72, the fixed disk 72 is penetrated by the reciprocating screw rod 71, and the fixed disk 72 is threadedly connected to the reciprocating screw rod 71, the long rod 700 passes through the fixed disk 72, and the long rod 700 slides with the fixed disk 72 The fixed disk 72 is rotatably connected, a cavity 73 is provided inside, a circular plate 74 is rotatably connected to the inner wall of the cavity 73, a contact hole 75 is provided on the surface of the circular plate 74, a contact rod 76 is contacted with the inner wall of the contact hole 75, a cleaning block 79 is fixed on the surface of the contact rod 76, a contact rod 77 is fixed to the bottom of the cleaning block 79, a contact hole 78 is provided at the bottom of the fixed disk 72, a contact rod 77 passes through the contact hole 78, and the contact rod 77 passes through the contact hole 78. Slidingly connected to the inner wall of the second contact hole 78, six groups of cleaning blocks 79 are arranged, and the six groups of cleaning blocks 79 are all arranged in a circular array with the center of the fixed disk 72 as the axis. The first contact hole 75 is arranged in an arc shape, and the fixed disk 72 is penetrated by the cover tube 4. Turn on the motor 70, the reciprocating screw rod 71 rotates, and the fixed disk 72 reciprocates up and down in a straight line. When the fixed disk 72 moves downward, the surface of the cleaning block 79 fits against the surface of the cover tube 4, so that the dirt and dust adhered to the surface of the cover tube 4 can be cleaned.

[0029] The linkage assembly 8 includes a threaded rod 80, which is fixed on the surface of one of the six groups of cleaning blocks 79. One end of the threaded rod 80 away from the cleaning block 79 penetrates the fixed disk 72. The surface of the fixed disk 72 is rotatably connected with a gear 81, which is penetrated by the threaded rod 80, and the gear 81 is threadedly connected to the threaded rod 80. A rack 82 is provided on the surface of the top plate 3, and the rack 82 penetrates the top plate 3, and the rack 82 is slidably connected to the top plate 3. The rack 82 meshes with the gear 81, and a fixed plate 83 is fixed on the top of the rack 82, and an L-shaped plate 84 is fixed on the top of the base 1. When the fixed disk 72 is at the bottom, the bottom of the rack 82 contacts the surface of the base 1, driving the gear As the wheel 81 rotates, the threaded rod 80 drives the cleaning block 79 to move away from the center of the fixed disk 72, and through the circular plate 74, the abutment hole 1 75, the abutment rod 1 76, the abutment rod 2 77, and the abutment hole 2 78, the cleaning blocks 79 are no longer in contact with the surface of the cover tube 4. When the reciprocating screw rod 71 drives the fixed disk 72 to move upward, the cleaning block 79 will not drive the movement of dirt, dust and other debris. When the fixed disk 72 is located at the top of the cover tube 4, the top of the fixed plate 83 abuts against the bottom of the L-shaped plate 84, so that the rack 82 moves downward, and the gear 81 can be reversed. At this time, the threaded rod 80 drives the cleaning block 79 to move closer to the cover tube 4, and the cleaning block 79 is in contact with the surface of the cover tube 4.

[0030] The collecting assembly 9 includes a collecting plate 90, which is placed on the surface of the base 1. A fixing frame 91 is fixed to the surface of the collecting plate 90. A receiving groove 92 is provided on the top of the fixing frame 91. A connecting rod 93 is hinged on the inner side of the receiving groove 92. A sliding groove 94 is provided on the top of the connecting rod 93. A movable rod 95 is slidably connected to the inner wall of the sliding groove 94. The top of the movable rod 95 is hinged to the bottom of the fixing plate 72. A spring 96 is fixed to the bottom of the movable rod 95. The bottom of the spring 96 is fixed to the inner wall of the sliding groove 94. The fixing frame 91, the connecting rod 93, the movable rod 95, the spring There are two groups of 96, and the two groups of fixed frames 91, connecting rods 93, movable rods 95, and springs 96 are symmetrically arranged with the center line of the cover tube 4 as the symmetry axis. The diameter of the collecting plate 90 is larger than the cover tube 4. When the fixed plate 72 moves downward with the reciprocating screw rod 71, the movable rod 95 moves downward. When the spring 96 is compressed to the extreme, the connecting rod 93 and the fixed frame 91 are offset at an angle, driving the fixed frame 91 and the collecting plate 90 to move closer to the cover tube 4, so that the collecting plate 90 is located below the cover tube 4, and the cleaned soil and dust can be collected to prevent the dust and soil from falling to other places.

[0031] A liquid storage tank 5 is fixed on the top of the base 1, and a feed port 6 is opened on the top of the liquid storage tank 5. A pump body 11 is fixed on the top of the cover tube 4, and a conduit 10 is fixed to the suction end of the pump body 11. The end of the conduit 10 away from the pump body 11 passes through the liquid storage tank 5, and the suction end of the pump body 11 passes through the cover tube 4. A connecting pipe 12 is fixed to the suction end of the pump body 11, and a nozzle is installed on the surface of the connecting pipe 12. A heating plate 13 is installed on the top of the inner wall of the cover tube 4. Fertilization can be carried out when crops are in urgent need of water and nutrients, and the absorption of nutrients by crops can be intuitively known.

[0032] When in use, the base 1 is moved to a suitable position so that the crops are located directly below the cover tube 4. At this time, the electric telescopic rod 2 is turned on and moved downward, so that the top plate 3 can drive the cover tube 4 to move downward and contact the soil surface. At this time, the heating plate 13 is turned on to quickly dry the soil around the roots of the crops. At this time, the pump body 11 is turned on to spray the nutrients in the liquid storage tank 5 through the conduit 10, the connecting pipe 12, and the nozzle to transport nutrients to the crops. In the case of dry soil, it is easier to know the situation of crops absorbing nutrients. In this way, fertilizer can be applied when the crops are in urgent need of water and nutrients, and the absorption of nutrients by the crops can be intuitively known. The cover tube 4 is made of a transparent acrylic plate, which is convenient for the staff to observe the crops inside and the absorption of nutrients by the crops. It is convenient to detect and obtain experimental data of crop absorption experiments. When mud and dust adhere to the surface of the cover tube 4, the cover tube 4 is moved up and reset through the electric telescopic rod 2. At this time, the motor 70 is turned on, and the reciprocating screw rod 71 rotates, and the long rod 700 cooperates to make the fixed plate 72 reciprocate up and down in a straight line. When the fixed plate 72 moves down, the surface of the cleaning block 79 fits with the surface of the cover tube 4, and the mud and dust adhered to the surface of the cover tube 4 can be cleaned. At the same time, when the fixed plate 72 is at the bottom, the bottom of the rack 82 contacts the surface of the base 1, driving the gear 81 to rotate. At this time, the threaded rod 80 drives the cleaning block 79 to move away from the center of the fixed plate 72, so that the surface of the contact rod 76 contacts the inner wall of the contact hole 75, so that the circular plate 74 rotates forward. The six groups of cleaning blocks 79 make synchronous radial movement. At this time, each cleaning block 79 is no longer in contact with the surface of the cover tube 4. When the reciprocating screw rod 71 drives the fixed plate 72 to move upward, the cleaning block 79 will not drive dirt, dust and other debris to move. When the fixed plate 72 is located at the top of the cover tube 4, the top of the fixed plate 83 abuts against the bottom of the L-shaped plate 84, so that the rack 82 moves downward, which can make the gear 81 reverse. At this time, the threaded rod 80 drives the cleaning block 79 to move closer to the cover tube 4, and the cleaning block 79 is in contact with the surface of the cover tube 4. The radial movement of the cleaning block 79 can be stabilized by setting the second abutting rod 77 and the second abutting hole 78. The above measures can prevent the cleaning block 79 from driving the dirt and dust to move synchronously, thereby improving the cleaning efficiency. At the same time, when the fixed plate 7 When the top plate 3 moves downward, the movable rod 95 will be driven to move synchronously. At this time, the movable rod 95 moves in the slide groove 94, and the spring 96 is compressed, so that the connecting rod 93 will not drive the fixed frame 91 to move. When the fixed plate 72 moves downward with the reciprocating screw rod 71, the movable rod 95 continues to move downward. When the spring 96 is compressed to the extreme, the connecting rod 93 and the fixed frame 91 are offset at an angle, driving the fixed frame 91 and the collecting plate 90 to move close to the cover tube 4, so that the collecting plate 90 is located below the cover tube 4, and the cleaned soil and dust can be collected to prevent the dust and soil from falling to other places. When the fixed plate 72 moves upward, the spring 96 drives the connecting rod 93, the fixed frame 91, and the collecting plate 90 to reset, which will not affect the normal operation of the cover tube 4.

[0033] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A visual detection device for the amount of nutrient absorption of crops, comprising a base (1), characterized in that: An electric telescopic rod (2) is fixed on the top of the base (1), a top plate (3) is fixed on the top of the electric telescopic rod (2), a cover tube (4) is fixed on the surface of the top plate (3), and a cleaning component (7) for conveniently cleaning the surface of the cover tube (4), a linkage component (8) for preventing dust from moving, and a collection component (9) for uniformly collecting the cleaned dust are arranged on the surfaces of the base (1) and the top plate (3), wherein the cleaning component (7) comprises a motor (70), the motor (70) is fixed on the top of the top plate (3), an output shaft of the motor (70) passes through the top plate (3), a reciprocating screw rod (71) is fixed on the bottom of the output shaft of the motor (70), and a long rod (700) is fixed on the bottom of the top plate (3).

2. The device for visualizing the amount of nutrient absorption of crops according to claim 1, characterized in that: The cleaning assembly (7) further comprises a fixed disk (72), the fixed disk (72) being penetrated by the reciprocating screw rod (71), and the fixed disk (72) being threadedly connected to the reciprocating screw rod (71), the long rod (700) being penetrated by the fixed disk (72), and the long rod (700) being slidably connected to the fixed disk (72), a cavity (73) being provided inside the fixed disk (72), a circular plate (74) being rotatably connected to the inner wall of the cavity (73), a contact hole (75) being provided on the surface of the circular plate (74), and the contact hole (75) being The inner wall of the fixing plate (72) is in contact with a first contact rod (76), a cleaning block (79) is fixed on the surface of the first contact rod (76), a second contact rod (77) is fixed on the bottom of the cleaning block (79), a second contact hole (78) is provided at the bottom of the fixing plate (72), the bottom of the second contact rod (77) passes through the second contact hole (78), and the second contact rod (77) is slidably connected to the inner wall of the second contact hole (78), six groups of cleaning blocks (79) are provided, and the six groups of cleaning blocks (79) are arranged in a circular array with the center of the fixing plate (72) as the axis.

3. The device for visualizing the detection of crop nutrient absorption according to claim 2, characterized in that: The linkage assembly (8) comprises a threaded rod (80), wherein the threaded rod (80) is fixed to the surface of one of the six groups of cleaning blocks (79), and one end of the threaded rod (80) away from the cleaning block (79) penetrates the fixed disk (72). A gear (81) is rotatably connected to the surface of the fixed disk (72), the gear (81) is penetrated by the threaded rod (80), and the gear 1 (81) is threadedly connected to the threaded rod (80). A rack (82) is provided on the surface of the top plate (3), the rack (82) penetrates the top plate (3), and the rack (82) is slidably connected to the top plate (3), the rack (82) is meshed with the gear (81), a fixed plate (83) is fixed to the top of the rack (82), and an L-shaped plate (84) is fixed to the top of the base (1).

4. The device for visualizing the amount of nutrient absorption of crops according to claim 2, characterized in that: The collecting assembly (9) comprises a collecting plate (90), wherein the collecting plate (90) is placed on the surface of the base (1), a fixing frame (91) is fixed on the surface of the collecting plate (90), a receiving groove (92) is provided on the top of the fixing frame (91), a connecting rod (93) is hingedly connected to the inner side of the receiving groove (92), a sliding groove (94) is provided on the top of the connecting rod (93), a movable rod (95) is slidably connected to the inner wall of the sliding groove (94), the top of the movable rod (95) is hingedly connected to the bottom of the fixing plate (72), a spring (96) is fixed to the bottom of the movable rod (95), and the bottom of the spring (96) is fixed to the inner wall of the sliding groove (94).

5. The device for visualizing the detection of crop nutrient absorption according to claim 2, characterized in that: The first abutment hole (75) is configured to be arc-shaped.

6. The device for visualizing the amount of nutrient absorption of crops according to claim 2, characterized in that: The fixing disk (72) is penetrated by the cover tube (4).

7. The device for visualizing the amount of nutrient absorption of crops according to claim 1, characterized in that: A liquid storage tank (5) is fixed on the top of the base (1), a feed port (6) is opened on the top of the liquid storage tank (5), a pump body (11) is fixed on the top of the cover tube (4), a conduit (10) is fixed to the suction end of the pump body (11), an end of the conduit (10) away from the pump body (11) passes through the liquid storage tank (5), the suction end of the pump body (11) passes through the cover tube (4), and a connecting pipe (12) is fixed to the suction end of the pump body (11), a nozzle is installed on the surface of the connecting pipe (12), and a heating plate (13) is installed on the top of the inner wall of the cover tube (4).

8. The device for visualizing the detection of nutrient absorption of crops according to claim 4, characterized in that: The fixed frame (91), the connecting rod (93), the movable rod (95), and the spring (96) are each provided in two groups, and the two groups of the fixed frame (91), the connecting rod (93), the movable rod (95), and the spring (96) are both symmetrically arranged with the center line of the cover tube (4) as the axis of symmetry.

9. The device for visualizing the detection of nutrient absorption of crops according to claim 4, characterized in that: The diameter of the collecting plate (90) is larger than that of the cover cylinder (4).

Images