A hydroponic device for plant seedling culture and root observation

Abstract

The present application relates to the technical field of plant root determination, and discloses a hydroponic device for plant seedling culture and root observation, which comprises a hydroponic box with an opening on one side, an observation plate is installed at the opening of the hydroponic box, guide mechanisms are installed at the top and bottom of the observation plate and fixed to the hydroponic box, an adjusting and locking mechanism is slidably connected between the two guide mechanisms, a determination mechanism is connected to the adjusting and locking mechanism, and a U-shaped cover plate is slidably connected to the guide mechanism and installed on the side of the determination mechanism away from the hydroponic box. The present application is convenient for fixing and taking out the plants without damaging the plant roots, and is convenient for subsequent culture and determination of the plants, reduces the inaccuracy of the determination caused by the damage of the plant roots, meets the determination requirements of the roots at different positions, avoids the influence of light on the root growth, meets the determination requirements of the root length and the angle deviating from the gravity vector, is convenient for the root measurement operation of the cultivators, and improves the measurement efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of plant root system determination, in particular to a hydroponic device for plant seedling culture and root system observation. BACKGROUND

[0002] Root system is the main organ for plant to absorb nutrients and water, and plant root architecture refers to the spatial distribution of root system in growth medium, and different root architectures can significantly affect important physiological functions such as nutrient and water absorption and utilization, therefore, it is of great significance to study three-dimensional architecture of plant root system for plant nutrient and water absorption, variety screening and the like.

[0003] When the growth state of plant root system is studied, the growth state of plant root system needs to be determined first, the existing root system observation device is inconvenient to measure and operate, cannot eliminate the influence of light on root growth, cannot effectively determine the length of root system and the angle deviated from the gravity vector, and cannot effectively and quickly determine the growth state of root system, therefore, the present application provides a hydroponic device for plant seedling culture and root system observation. SUMMARY

[0004] In order to solve the technical problems that the existing root system observation device is inconvenient to measure and operate, cannot eliminate the influence of light on root growth, cannot effectively determine the length of root system and the angle deviated from the gravity vector, and cannot effectively and quickly determine the growth state of root system, the present application provides a hydroponic device for plant seedling culture and root system observation.

[0005] The present application adopts the following technical scheme: a hydroponic device for plant seedling culture and root system observation, comprising a hydroponic box with an opening on one side, wherein the opening of the hydroponic box is provided with an observation plate, the top and bottom of the observation plate are provided with guide mechanisms fixed with the hydroponic box, two groups of guide mechanisms are slidingly connected with an adjusting and locking mechanism, the adjusting and locking mechanism is connected with a measuring mechanism, and the side, away from the hydroponic box, of the measuring mechanism is provided with a U-shaped cover plate slidingly connected with the guide mechanism.

[0006] The adjusting and locking mechanism comprises two groups of parallel support plates, the two groups of support plates are fixed at both ends of one side of the water culture box and are connected with the L-shaped movable plate of the guide mechanism, the side of the two groups of support plates close to each other is provided with a mounting groove along the length direction, the two mounting grooves are connected with the pulling unit, one end of the pulling unit extending into the mounting groove is fixedly connected with the extrusion plate which is slidably connected with the mounting groove, the side of the two extrusion plates close to each other is hingedly connected with the pull rod, one end of the pull rod away from the extrusion plate is hingedly connected with the driven plate, the side of the driven plate away from the adjacent extrusion plate is provided with a sliding groove along the length direction, the sliding groove is slidably connected with the sliding block, the bottom of the pulling unit is provided with the locking unit which is parallel to the pulling unit, the locking unit is fixedly connected with the sliding block, the bottom between the two groups of support plates is fixedly connected with the reinforcing plate, and the top of one end of the reinforcing plate extending into the mounting groove is fixedly connected with the spring which is fixedly connected with the bottom of the extrusion plate.

[0007] Through the above technical scheme, the culture solution is input into the water culture box through the liquid inlet pipe, the cultivated plants are placed on the planting unit for cultivation, when the root system state of the plant is measured, the shielding cover plate is moved away from one side of the water culture box, the pulling unit is pulled to make the adjusting and locking mechanism and the measuring mechanism be in the unlocked state, then the adjusting and locking mechanism and the measuring mechanism are pushed to adjust the state of the measuring mechanism, so that the extension line of the rotating shaft axis of the measuring mechanism is located at the intersection of the main root and the secondary root of the plant, the indicating needle is distributed along the extension direction of the secondary root, at this time, the length of the secondary root is determined by the length indicating scale on the indicating needle, and the angle of the secondary root deviating from the gravity vector is determined according to the angle indicating scale, and the above-mentioned way is used to measure the root system.

[0008] As a further improvement of the above scheme, the side of the sliding groove opening is provided with a clamping strip one fixedly connected with the driven plate, and the clamping strip one is arranged along the length direction of the driven plate, the side of the clamping strip one away from the driven plate is provided with clamping grooves one arranged along the length direction, the end of the locking unit is fixedly connected with the clamping teeth one, and the clamping teeth one is clamped with the clamping grooves one.

[0009] Through the above technical scheme, the clamping and locking operation of the driven plate and the connecting plate in the locking unit is realized, and the connecting plate moves in the vertical direction when not clamped.

[0010] As a further improvement of the above scheme, the inner side wall of the side of the mounting groove opening is fixedly connected with the limiting plate arranged along the length direction of the support plate, and the side close to the limiting plate of the pulling unit and the locking unit is provided with the limiting groove slidably connected with the limiting plate.

[0011] Through the above technical scheme, the limiting plate guides and limits the connecting plate and the horizontal plate in the vertical direction, so that the connecting plate and the horizontal plate are prevented from being deflected when moving.

[0012] As a further improvement of the above scheme, the pulling unit comprises a cross plate arranged between the two groups of mounting slots, the cross plate is fixedly connected with a L-shaped locking plate near one side of the hydroponic box, the top of the locking plate is fixedly connected with a pulling rod, and one end of the cross plate extending into the mounting slot is fixedly connected with the extrusion plate.

[0013] Through the above technical scheme, the pulling rod pulls upward, at this time the locking plate moves upward and is not clamped with the second clamping groove on the contact groove on the guide mechanism, the second clamping groove is not clamped with the second clamping tooth on the locking plate, at this time the two groups of supporting plates can slide along the length direction of the base plate, and the position of the measuring mechanism is adjusted from the horizontal direction when the supporting plates slide.

[0014] As a further improvement of the above scheme, the locking unit comprises a connecting plate arranged parallel to the bottom of the pulling unit, a recess is arranged in the middle position of the side of the connecting plate away from the hydroponic box, the inner side wall of the recess is provided with a butt joint hole for rotationally sleeving the measuring mechanism, locking rods are arranged on both sides of the opening of the butt joint hole and are slidably sleeved with the connecting plate, and one end of the locking rod away from the butt joint hole is fixedly connected with the adjacent sliding block.

[0015] Through the above technical scheme, when the pulling rod pushes the driven plate to one side of the extrusion plate, the driven plate drives the sliding block to move, so that the locking rod connected with the sliding block moves to the side away from the rotating shaft, and the locking rod is not clamped with the rotating shaft.

[0016] As a further improvement of the above scheme, the guide mechanism comprises a base plate fixedly connected with the hydroponic box, a sliding groove one, a sliding groove two and a contact groove are arranged on the side of the two base plates away from each other and distributed along the direction from the hydroponic box to the base plate, the sliding groove one is slidably connected with the cover plate, the sliding groove two is slidably connected with the adjacent movable plate, the contact groove is provided with a second clamping groove distributed along the length direction of the contact groove in sequence, the pulling unit is fixedly connected with a second clamping tooth, and the second clamping tooth is clamped with the second clamping groove.

[0017] Through the above technical scheme, the connection and sliding movement of the supporting plate and the cover plate are realized.

[0018] As a further improvement of the above scheme, the measuring mechanism comprises a measuring plate, a rotating shaft rotationally connected with the locking unit is arranged on the measuring plate, an indicating needle fixedly connected with the rotating shaft is arranged on the side of the measuring plate away from the hydroponic box, a U-shaped clamping plate fixedly connected with the measuring plate is arranged on the side of the measuring plate close to the hydroponic box, the clamping plate is slidably sleeved with the adjacent supporting plate, a third clamping groove is arranged on the outer circle of the rotating shaft and arranged in an array along the axis of the rotating shaft, a locking groove with a circular arc structure is arranged on the end of the locking rod away from the sliding block, a third clamping tooth is fixedly connected with the inner side wall of the locking groove, and the third clamping tooth is clamped with the third clamping groove.

[0019] As a further improvement of the above scheme, the measuring plate is provided with an angle indicating scale on the side away from the hydroponic box, and the indicating needle is provided with a length indicating scale along the length direction thereof.

[0020] Through the above technical scheme, the extension line of the rotation axis of the measuring mechanism is located at the intersection of the main root and the secondary root of the plant, and the indicating needle is distributed along the extension direction of the secondary root. At this time, the length of the secondary root is determined by the length indicating scale on the indicating needle, and the angle of the secondary root growth deviating from the gravity vector is determined according to the angle indicating scale. The above method is used to measure the root system.

[0021] As a further improvement of the above scheme, the cover plate comprises a cover plate body, and L-shaped sliding plates are fixed to the top and bottom of the cover plate body, and the sliding plates are slidingly connected with the guide mechanism. One end of the cover plate body is fixedly connected with a rear sealing plate fixedly connected with the sliding plates, and the cover plate body, the sliding plates and the rear sealing plate are coated with a black light shielding layer.

[0022] As a further improvement of the above scheme, the top of the hydroponic box is provided with a planting unit, and a planting placement groove penetrates through the top of the hydroponic box. The planting unit comprises planting plates distributed in the planting placement groove in sequence, and plant fixing holes in arc shape are arranged between adjacent planting plates. A liquid inlet pipe is fixed to one side of the hydroponic box, and a liquid outlet hole is fixed to the other side of the hydroponic box. The hydroponic box and the surface of the planting plate are coated with a black light shielding layer.

[0023] Through the above technical scheme, the plant is placed on the plant fixing hole between the adjacent planting plates, and the plant fixing hole clamps and fixes the plant by folding the adjacent planting plates.

[0024] Compared with the prior art, the beneficial effects of the present application are as follows:

[0025] 1. The present application is convenient for fixing and taking out the plant, does not harm the root system of the plant during fixing and taking out, is convenient for subsequent cultivation and measurement of the plant, and reduces the occurrence of inaccurate measurement due to damage to the root system of the plant.

[0026] 2. The present application can quickly adjust the displacement of the measuring mechanism to the root system measurement position according to the need for root system measurement during cultivation, and realizes the need for root system measurement at different positions.

[0027] 3. The present application adopts light shielding operation during the cultivation process to avoid the influence of light on the growth of the root system, realizes the need for measurement of the length of the root system and the angle deviating from the gravity vector, is convenient for the root system measurement operation of the cultivation personnel, and improves the measurement efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 A structure diagram of a hydroponic device for plant seedling cultivation and root system observation is provided.

[0029] Figure 2 A side view of a hydroponic device for plant seedling culture and root observation provided by the present application;

[0030] Figure 3 A structure schematic view of the adjusting locking mechanism provided by the present application Figure 2 A structure schematic view of the adjusting locking mechanism provided by the present application

[0031] Figure 4 A structure schematic view of the adjusting locking mechanism provided by the present application Figure 2 A structure schematic view of the adjusting locking mechanism provided by the present application

[0032] Figure 5 A structure schematic view of the adjusting locking mechanism provided by the present application

[0033] Figure 6 A structure schematic view of the adjusting locking mechanism provided by the present application

[0034] Figure 7 A structure schematic view of the adjusting locking mechanism provided by the present application

[0035] Figure 8 A structure schematic view of the adjusting locking mechanism provided by the present application

[0036] Main symbol explanation:

[0037] 1, hydroponic box; 2, observation plate; 3, guiding mechanism; 4, adjusting locking mechanism; 5, measuring mechanism; 6, cover plate; 7, planting unit; 31, base plate; 32, slide one; 33, slide two; 34, contact groove; 41, support plate; 42, movable plate; 43, mounting groove; 44, cross plate; 45, locking plate; 46, pulling rod; 47, extrusion plate; 48, driven plate; 49, sliding groove; 410, sliding block; 411, connecting plate; 412, groove; 413, butt joint hole; 414, locking rod; 415, reinforcing plate; 51, measuring plate; 52, rotating shaft; 53, clamp plate; 54, indicating needle; 71, planting plate; 72, plant fixing hole. DETAILED DESCRIPTION

[0038] Hereinafter, the present application will be further described in conjunction with the drawings and specific embodiments, and it should be noted that the following described embodiments or technical features can be combined in any manner to form new embodiments without conflict.

[0039] Embodiment 1:

[0040] Please combine Figures 1-8The plant seedling culture and root observation hydroponic device of the embodiment comprises a hydroponic box 1 with an opening on one side, the hydroponic box 1 is provided with an observation plate 2 at the opening, the top and bottom of the observation plate 2 are provided with guide mechanisms 3 fixedly connected with the hydroponic box 1, two groups of the guide mechanisms 3 are slidably connected with an adjusting and locking mechanism 4, the adjusting and locking mechanism 4 is connected with a measuring mechanism 5, and the side, away from the hydroponic box 1, of the measuring mechanism 5 is provided with a U-shaped cover plate 6 slidably connected with the guide mechanisms 3.

[0041] The adjusting and locking mechanism 4 comprises two groups of parallel support plates 41, the two ends of the two groups of support plates 41, close to one side of the hydroponic box 1, are fixedly connected with L-shaped movable plates 42 slidably connected with the guide mechanisms 3, the side, close to each other, of the two groups of support plates 41 is provided with an installation groove 43 arranged along the length direction of the support plate 41, a pulling unit is connected between the two groups of installation grooves 43, one end of the pulling unit, extending into the installation groove 43, is fixedly connected with an extrusion plate 47 slidably connected with the installation groove 43, the side, close to each other, of the two groups of extrusion plates 47 is hingedly connected with a pull rod, one end of the pull rod, away from the extrusion plate 47, is hingedly connected with a driven plate 48, a plurality of pull rods are arranged between the extrusion plate 47 and the adjacent driven plate 48, and the pull rods are arranged in parallel, the side, away from the adjacent extrusion plate 47, of the driven plate 48 is provided with a sliding groove 49 arranged along the length direction of the driven plate 48, the sliding groove 49 is slidably connected with a sliding block 410 inside, the bottom of the pulling unit is provided with a locking unit arranged in parallel with the pulling unit, the locking unit is fixedly connected with the sliding block 410, and the bottom between the two groups of support plates 41 is fixedly connected with a reinforcing plate 415, one end of the reinforcing plate 415, extending into the installation groove 43, is fixedly connected with a spring fixedly connected with the bottom of the extrusion plate 47, the bottom of the driven plate 48 is slidably connected with the top of the reinforcing plate 415, and the driven plate 48 slides along the length direction of the reinforcing plate 415.

[0042] The side, close to the driven plate 48, of the opening of the sliding groove 49 is fixedly connected with a clamping strip one fixedly connected with the driven plate 48, and the clamping strip one is arranged along the length direction of the driven plate 48, the side, away from the driven plate 48, of the clamping strip one is provided with clamping grooves one arranged along the length direction of the clamping strip one in sequence, and the end of the connecting plate 411 of the locking unit is fixedly connected with a clamping tooth one, and the clamping tooth one is clamped with the clamping groove one.

[0043] The inner side wall of the side, close to the opening, of the installation groove 43 is fixedly connected with a limiting plate arranged along the length direction of the support plate 41, and the side, close to the limiting plate, of the cross plate 44 of the pulling unit and the connecting plate 411 of the locking unit is provided with a limiting groove slidably connected with the limiting plate.

[0044] The implementation principle of the hydroponic device for plant seedling culture and root observation in the embodiment of the application is as follows: the culture solution is input into the hydroponic box 1 through the liquid inlet pipe, the cultivated plants are placed on the planting unit 7 for cultivation, when the state of the plant roots is determined, the shielding cover plate 6 is moved away from one side of the hydroponic box 1, the pulling unit is pulled to make the adjusting and locking mechanism 4 and the measuring mechanism 5 both in the unlocked state, then the adjusting and locking mechanism 4 and the measuring mechanism 5 are pushed, the state of the measuring mechanism 5 is adjusted, the extension line of the axis of the rotating shaft 52 of the measuring mechanism 5 is located at the intersection of the main root and the secondary root of the plant, the indicating needles 54 are distributed along the extension direction of the secondary root, at this time, the length of the secondary root is determined by the length indicating scale on the indicating needle 54, and the angle at which the secondary root deviates from the gravity vector is determined according to the angle indicating scale, and the above-mentioned method is used to measure the roots.

[0045] Embodiment 2

[0046] The further improvement of the embodiment based on the embodiment 1 is that the pulling unit comprises a transverse plate 44 arranged between the two groups of mounting grooves 43, the transverse plate 44 is fixedly connected with an L-shaped locking plate 45 close to one side of the hydroponic box 1, the locking plate 45 is fixedly connected with a pulling rod 46 at the top, and one end of the transverse plate 44 extending into the mounting groove 43 is fixedly connected with a pressing plate 47.

[0047] The locking unit comprises a connecting plate 411 arranged parallel to the bottom of the pulling unit, a recess 412 recessed inward is arranged at the middle position of the side of the connecting plate 411 away from the hydroponic box 1, a butt joint hole 413 is arranged on the inner side wall of the recess 412 and rotatably connected with the rotating shaft 52 of the measuring mechanism 5, locking rods 414 are arranged on both sides of the opening of the butt joint hole 413 and slidably connected with the connecting plate 411, and one end of the locking rod 414 away from the butt joint hole 413 is fixedly connected with the adjacent sliding block 410 after penetrating through the connecting plate 411.

[0048] Embodiment 3

[0049] The further improvement of the embodiment based on the embodiment 1 is that the guiding mechanism 3 comprises base plates 31 fixedly connected with the hydroponic box 1, a sliding channel one 32, a sliding channel two 33 and a contact groove 34 are arranged on the sides of the two groups of base plates 31 away from each other and distributed along the direction from the hydroponic box 1 to the base plate 31, the sliding channel one 32 is slidably connected with the cover plate 6, the sliding channel two 33 is slidably connected with the adjacent movable plate 42, the contact groove 34 is provided with a plurality of clamping grooves two arranged along the length direction of the contact groove 34, and the end of the locking plate 45 of the pulling unit away from the transverse plate 44 is fixedly connected with clamping teeth two, and the clamping teeth two are clamped with the clamping grooves two.

[0050] The measuring mechanism 5 comprises a measuring plate 51, the measuring plate 51 is rotationally connected with a rotating shaft 52 rotationally connected with the latching unit, the side of the measuring plate 51 away from the hydroponic box 1 is provided with an indicating needle 54 fixedly connected with the rotating shaft 52, the side of the measuring plate 51 close to the hydroponic box 1 is fixedly connected with a U-shaped clamping plate 53, and the clamping plate 53 is slidably connected with the adjacent supporting plate 41, and the outer circle of the rotating shaft 52 is provided with a plurality of clamping grooves three arranged along the axis of the rotating shaft 52, and the end of the locking rod 414 away from the sliding block 410 is provided with a locking groove in a circular arc structure, and the locking groove is fixedly connected with a clamping tooth three on the inner side wall, and the clamping tooth three is clamped with the clamping groove three.

[0051] The side of the measuring plate 51 away from the hydroponic box 1 is provided with an angle indicating scale arranged on the measuring plate 51 and along the axis of the rotating shaft 52, and the indicating needle 54 is provided with a length indicating scale arranged along the length direction of the indicating needle 54.

[0052] Embodiment 4:

[0053] The cover plate 6 comprises a cover plate body, the top and bottom of the cover plate body are fixedly connected with L-shaped sliding plates, and the sliding plates are slidably connected with the guide mechanism 3, one end of the cover plate body is fixedly connected with a rear sealing plate fixedly connected with the sliding plate, and the cover plate body, the sliding plate and the rear sealing plate are all coated with a black light shielding layer.

[0054] The top of the hydroponic box 1 is provided with a planting unit 7, and the top of the hydroponic box 1 penetrates a planting placing groove, the planting unit 7 comprises planting plates 71 arranged on the planting placing groove in sequence, arc-shaped plant fixing holes 72 are arranged between adjacent planting plates 71, a liquid inlet pipe is fixedly connected to one side of the hydroponic box 1, and a liquid outlet hole is fixedly connected to the other side of the hydroponic box 1, and the surfaces of the hydroponic box 1 and the planting plates 71 are all coated with a black light shielding layer.

[0055] Working principle:

[0056] When the root of the plant is measured, first, the culture solution is input into the hydroponic box 1 through the liquid inlet pipe, and the cultivated plant is placed on the planting unit 7 for cultivation, when the state of the plant root system is measured, the shielding cover plate 6 is moved away from the side of the hydroponic box 1, the pulling unit is pulled to make the adjusting and locking mechanism 4 and the measuring mechanism 5 both in the unlocked state, then the adjusting and locking mechanism 4 and the measuring mechanism 5 are pushed to adjust the state of the measuring mechanism 5, so that the extension line of the axis of the rotating shaft 52 of the measuring mechanism 5 is located at the intersection of the main root and the secondary root of the plant, and the indicating needle 54 is arranged along the extension direction of the secondary root, at this time, the length indicating scale on the indicating needle 54 is used to determine the length of the secondary root, and the angle indicating scale is used to determine the angle of the secondary root deviating from the gravity vector, and the above method is used to measure the root system.

[0057] When the plant is installed, the plant is placed on the plant fixing hole 72 between the adjacent planting plates 71, the adjacent planting plates 71 are folded, and the plant fixing hole 72 clamps and fixes the plant;

[0058] When the measuring position is adjusted, the pulling rod 46 on the pulling unit is pulled upwards first, at this time, the locking plate 45 moves upwards and is not clamped with the second clamping groove on the contact groove 34 on the guide mechanism 3, the second clamping tooth on the locking plate 45 is not clamped with the second clamping groove, at this time, the two groups of support plates 41 can slide along the length direction of the base plate 31, and the position of the measuring mechanism 5 is adjusted from the horizontal direction when the support plate 41 slides;

[0059] When the locking plate 45 moves upwards, the extrusion plate 47 fixed with the horizontal plate 44 moves upwards, then the extrusion plate 47 drives the pulling rod to move, the pulling rod pushes the driven plate 48 to one side of the extrusion plate 47, then the driven plate 48 drives the sliding block 410 to move, the locking rod 414 connected with the sliding block 410 moves to the side direction away from the rotating shaft 52, so that the locking rod 414 is not clamped with the rotating shaft 52, at the same time, when the driven plate 48 moves to the direction of the extrusion plate 47, the driven plate 48 is not clamped with the end of the connecting plate 411, so that the connecting plate 411 can move along the vertical direction, thereby the position of the measuring mechanism 5 in the vertical direction can be adjusted, when the rotating shaft 52 is not clamped, the indicating needle 54 on the rotating shaft 52 is deflected, the position of the indicating needle 54 is adjusted, and the root length and the angle of deviation from the gravity vector are measured;

[0060] After the adjustment is completed, the pulling rod 46 is loosened, the spring on the top of the reinforcing plate 415 is tensioned, the extrusion plate 47 moves downwards, then the locking operation between the adjusting locking mechanism 4 and the guide mechanism 3 and the adjusting locking mechanism 4 and the measuring mechanism 5 is adjusted according to the above reverse steps, so that the adjusting locking mechanism 4 and the measuring mechanism 5 are in the locked state, and the measured data on the measuring mechanism 5 is collected;

[0061] The design is convenient for fixing and taking out the plant, does not harm the plant root when the plant is fixed and taken out, is convenient for subsequent cultivation and measurement of the plant, reduces the inaccuracy caused by damage of the plant root, can quickly adjust the displacement of the measuring mechanism to the root measurement position according to the root measurement requirement during cultivation, and meets the root measurement requirement at different positions; the whole is shaded during cultivation, so that the light does not affect the root growth; the root length and the angle of deviation from the gravity vector are measured, the root measurement operation of the cultivation personnel is facilitated, and the measurement efficiency is improved.

[0062] The above-mentioned embodiments are only preferred embodiments of the present application, and cannot be used to limit the protection scope of the present application, and any non-essential changes and replacements made by the person skilled in the art on the basis of the present application all belong to the protection scope of the present application.

Claims

1. A hydroponic device for cultivating plant seedlings and observing root systems, characterized in that, The device includes a hydroponic box with an opening on one side, an observation plate installed at the opening of the hydroponic box, and guide mechanisms fixed to the hydroponic box at the top and bottom of the observation plate. An adjustment and locking mechanism is slidably connected between the two sets of guide mechanisms. The adjustment and locking mechanism is connected to a measuring mechanism. A U-shaped cover plate is installed on the side of the measuring mechanism away from the hydroponic box and is slidably connected to the guide mechanism. The adjustment and locking mechanism includes two sets of parallel support plates. Both ends of the support plates on the side closest to the hydroponic tank are fixedly connected to L-shaped movable plates that are slidably connected to the guide mechanism. The sides of the two support plates that are close to each other are provided with mounting grooves along their length. A pulling unit is connected between the two sets of mounting grooves. One end of the pulling unit that extends into the mounting groove is fixedly connected to a pressing plate that is slidably connected to the mounting groove. A pull rod is hinged to one side of the two sets of pressing plates that are close to each other. A driven plate is hinged to one end of the pull rod that is away from the pressing plate. A sliding groove is provided on one side of the driven plate that is away from the adjacent pressing plate along its length. A slider is slidably connected inside the sliding groove. A locking unit is provided at the bottom of the pulling unit that is parallel to it and is fixedly connected to the slider. A reinforcing plate is fixedly connected to the bottom between the two sets of support plates. A spring is fixedly connected to the bottom of the pressing plate at the top of one end of the reinforcing plate that extends into the mounting groove. A locking strip is installed on one side of the opening of the slide groove and is fixedly connected to the driven plate. The locking strip is arranged along the length direction of the driven plate. A slot is opened on the side of the locking strip away from the driven plate and arranged sequentially along its length direction. A locking tooth is fixedly connected to the end of the locking unit and engages with the slot. The pulling unit includes a horizontal plate disposed between two sets of mounting slots. An L-shaped locking plate is fixedly connected to the side of the horizontal plate near the hydroponic box. A pulling rod is fixedly connected to the top of the locking plate. The end of the horizontal plate that extends into the mounting slot is fixedly connected to the extrusion plate. The locking unit includes a connecting plate located at the bottom of the pulling unit and parallel to it. A recessed groove is provided in the middle of the side of the connecting plate away from the hydroponic box. A docking hole is provided on the inner side wall of the groove for rotating engagement with the measuring mechanism. Locking rods are provided on both sides of the opening of the docking hole and are slidably engaged with the connecting plate. The end of the locking rod away from the docking hole passes through the connecting plate and is fixedly connected to the adjacent slider. The measuring mechanism includes a measuring plate, which is rotatably connected to a rotating shaft that is rotatably connected to a locking unit. An indicator needle fixed to the rotating shaft is installed on the side of the measuring plate away from the hydroponic box. A U-shaped clamp plate is fixed to the side of the measuring plate near the hydroponic box, and the clamp plate is slidably sleeved with an adjacent support plate. The outer ring of the rotating shaft has three slots arranged in an array along its axis. The locking rod has an arc-shaped locking groove at the end away from the slider. The inner sidewall of the locking groove has three locking teeth that engage with the three slots.

2. The hydroponic device for plant seedling cultivation and root observation as described in claim 1, characterized in that, A limiting plate is fixed to one side of the inner wall of the mounting slot opening, which is arranged along the length of the support plate. The pulling unit and the locking unit are both provided with limiting slots that are slidably connected to the limiting plate on the side near the limiting plate.

3. The hydroponic device for plant seedling cultivation and root observation as described in claim 1, characterized in that, The guiding mechanism includes a base plate fixed to the hydroponic box. On the side of the two sets of base plates that are far apart from each other, there are slides 1, slides 2 and contact grooves distributed along the direction from the hydroponic box to the base plate. Slide 1 is slidably connected to the cover plate, slides 2 is slidably connected to the adjacent movable plate, and the contact groove has a slot 2 distributed sequentially along its length. The pulling unit is fixedly connected to a tooth 2, and the tooth 2 engages with the slot 2.

4. The hydroponic device for plant seedling cultivation and root observation as described in claim 1, characterized in that, The measuring plate has angle indicator scales on the side away from the hydroponic box, which are arrayed along the axis of rotation. The indicator needle has length indicator scales along its length direction.

5. The hydroponic device for plant seedling cultivation and root observation as described in claim 1, characterized in that, The cover plate includes a cover plate body, with L-shaped sliding plates fixed to the top and bottom of the cover plate body, and the sliding plates are slidably connected to the guide mechanism. A rear sealing plate fixed to one end of the cover plate body and the sliding plate is fixed to the rear sealing plate. The cover plate body, the sliding plate and the rear sealing plate are all coated with a black light-blocking layer.

6. The hydroponic device for plant seedling cultivation and root observation as described in claim 1, characterized in that, The top of the hydroponic box is equipped with a planting unit, and a cultivation placement groove runs through the top of the hydroponic box. The planting unit includes planting plates distributed sequentially on the cultivation placement groove. A circular arc-shaped plant fixing hole is opened between adjacent planting plates. A liquid inlet pipe is fixedly connected to one side of the hydroponic box, and a liquid drain hole is fixedly connected to the other side of the hydroponic box. The surfaces of the hydroponic box and the planting plates are coated with a black light-blocking layer.

Images