JP3686959B2 - Plant immersion equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an apparatus used for plant hydroponics in which a plant is planted on a planting panel and is cultivated with a culture solution, and more specifically, a plant that exterminates pests by immersing the planting panel in the solution for a predetermined time The present invention relates to an immersion apparatus.
[0002]
[Prior art]
In hydroponic cultivation, where the roots of plants are immersed in the culture medium in the cultivation tank to absorb nutrients, pesticides such as herbicides and soil amendments are not necessary. Pesticides such as insecticides and insect repellents for controlling insects such as insects still needed to be used. For this reason, there was a problem that these used agricultural chemicals remained in the harvest.
[0003]
The pest performs so-called tracheal respiration in which oxygen is taken into a tissue from an air gate that opens to the body surface and carbon dioxide is discharged from the air gate to the outside. For this reason, if these pests are immersed in a liquid for a long time, they cannot exchange gas from the air gate and die. The time required for killing is approximately 3-4 hours for Brassicaa and 0.5-2 hours for Blue-worms.
[0004]
Utilizing this characteristic, a plant pest control method for killing a pest without damaging the plant by immersing the plant to which the pest is attached in a solution adjusted to a required concentration for a predetermined time, and for the same Plant dipping devices have been proposed (Japanese Patent Laid-Open Nos. 11-42038 and 2000-217450).
[0005]
[Problems to be solved by the invention]
However, in the plant dipping apparatus disclosed in Japanese Patent Application Laid-Open No. 11-42038, the planting panel is manually dipped, so that a great deal of labor is required for the dipping treatment of the planting panel.
[0006]
Moreover, in one plant immersion apparatus currently disclosed by Unexamined-Japanese-Patent No. 2000-217450, a storage tank is provided separately from a cultivation tank, a culture solution is transferred from a cultivation tank to a storage tank, a liquid level is lowered, and a plant planting panel is made. Although the method of lowering to the immersion position is used, there is a problem that the apparatus becomes large because a separate storage tank must be provided. Further, in other disclosed plant dipping devices, a vacant space is provided in the plant planting panel, and the plant planting panel is moved up and down by supplying and discharging liquid to the vacant chamber. In such a device, There is a problem that a vacant space having water-tightness must be provided in the plant planting panel, resulting in a complicated structure.
[0007]
This invention is made | formed in view of such a conventional problem, and it aims at providing the plant immersion apparatus which can perform the immersion process of a plant planting panel easily and reliably.
[0008]
Another object of the present invention is to provide an apparatus capable of setting desired immersion conditions and automatically executing them.
[0009]
Furthermore, it is an object of the present invention to be able to perform an immersion treatment at an appropriate time while confirming the occurrence state of plant pests.
[0010]
Another object of the present invention is to reduce the resistance received from the liquid when the plant planting panel moves, and to suppress the generation of algae in the cultivation tank.
[0011]
[Means for Solving the Problems]
According to the present invention, the cultivation tank containing the liquid, the plant planting panel floating on the liquid level in the cultivation tank, the holding means for holding the plant planting panel in the immersion position, and immersed from at least the liquid level position A moving means for relatively moving the plant planting panel to a position; a control means for controlling the operation of the moving means; and the control means for inputting start / stop of dipping treatment and / or dipping conditions. In the plant immersion device provided with an external input unit, the plant planting panel covers the entire liquid surface of the cultivation layer, and has at least one of a notch and a through hole, and the notch and the through hole are provided. A lid member is provided in the opening of the plant planting panel so that the liquid can be circulated when the plant planting panel is relatively moved, and the plant planting panel is liquid when the relative movement from the liquid level position to the dipping position is performed. Reduce the resistance received from Plant dipping apparatus is provided, characterized in that.
[0012]
Further, from the viewpoint of effective pest control in consideration of the types of plants and pests, the climate, etc., an external input unit for inputting immersion conditions may be provided in the control means. Here, the immersion condition is preferably at least one of immersion time, immersion interval, and immersion time. In addition, since the growth status of plants and the occurrence of pests change from day to day, an additional immersion input unit that performs additional immersion treatment between the set immersion treatment and the immersion treatment from the viewpoint of adapting to the changes in a flexible manner. In addition, it is preferable to further provide at least one of the immersion blow-out input unit that does not execute the next set immersion process in the external input unit.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
As a result of intensive studies on whether or not the dipping treatment can be performed more easily and reliably in the apparatus for exterminating the pests attached to the plant by the dipping treatment, the inventors have made the plant planting panel relatively to the dipping position. The present inventors have found that it is sufficient to provide a moving means for moving and a control means for controlling the moving means.
[0017]
In FIG. 1, the longitudinal cross-sectional view which shows an example of the plant immersion apparatus of this invention is shown. The cultivation tank 1 for hydroponics is a box shape with the upper part opened, and the culture solution 2 is filled therein for about the eighth minute. A rectangular plate-like plant planting panel 3 is floated on the liquid surface of the culture solution 2. The plant planting panel 3 may be made of a material having a specific gravity smaller than that of the culture solution, such as polystyrene foam, or may be hollow and floated by the buoyancy of the culture solution 2 in the cultivation tank 1. A plurality of planting holes 4 are drilled in the plant planting panel 3, and a sponge-like holding material 6 holding the base of the plant P is inserted into the planting hole 4 so that the roots of the plant P are plant planting panels. 3 is immersed in the culture medium 2 below. In addition, as shown in FIG. 3, you may provide the circumferential processus | protrusion 5 in the inner wall of the planting hole 4 so that the holding | maintenance material 6 holding the base of the plant P may not come off from the planting hole 4 easily.
[0018]
A machine room 7 is attached to one side of the cultivation tank 1. The machine room 7 is divided up and down in the vicinity of the height of the cultivation tank 1 and is composed of an upper first machine room 7a and a lower second machine room 7b. The first machine room 7a includes a motor 11 (moving means) for moving the plant planting panel 3 from the liquid level position to the dipping position, a cover 8 having an open bottom surface, and an operation panel (external) provided on the upper surface of the cover 8. (Input unit) 102 and the like. On the other hand, the control part 101 is arrange | positioned in the 2nd machine room 7b.
[0019]
The motor 11 provided in the first machine chamber 7a rotates the elevating shaft 13 while reducing the rotation through the worm gear 12 including a worm 12a and a worm wheel 12b mounted on the motor shaft. The motor 11 is a direct current motor and can be rotated forward and backward. One end of wires 14, 14 ′ is fixed to the lifting shaft 13. The wires 14 and 14 ′ hang down from the lifting shaft 13 to the bottom surface of the cultivation tank 1 and proceed along the bottom surface by a pulley 15 provided at the bottom end of the cultivation tank 1, and one wire 14 is formed by the pulley 15 ′. After proceeding upward, the other wire 14 ′ further travels along the bottom surface, and then travels upward by the pulley 15 ″, and the wire ends are fixed to the bottom surface of the plant planting panel 3.
[0020]
Position detection means 16a is provided at the end of the plant planting panel 3 on the machine room side, and the position detection means 16b paired therewith is when the plant planting panel 3 moves from the liquid surface position to the immersion position. The second machine chamber 7b is provided so as to face the position detecting means 16a. The position detection means is not particularly limited, and examples of the position detection means include position detection by magnetic coupling.
[0021]
The control unit 101 controls the motor 11 according to the immersion conditions input from the operation panel 102 and moves the plant planting panel 3 to perform the immersion process. In FIG. 4, an example of the block diagram of the plant planting apparatus of this invention is shown. The immersion conditions and immersion start / stop signals input from the operation panel 102 are sent to the control unit 101, and the control unit 101 controls the motor 11 according to these conditions. At the same time, when a signal for starting the immersion process is sent to the control unit 101, the timer T for measuring the immersion time and the immersion interval starts to operate.
[0022]
The operation panel 102 is provided with a switch and a setting button for the user to set the immersion conditions such as the start / stop of the immersion process and the immersion time, and a display unit for displaying the set immersion conditions. FIG. 5 shows an example of the operation panel. The operation panel 102 is provided with a start / reset button 30, an immersion time display unit 31 that displays the immersion time, a time setting button 32 that sets the immersion time, and a display lamp 33 that displays that the immersion process is in progress. ing. A desired immersion time can be set by operating the time setting button 32. In addition, according to experiments by the inventors, it was found that a pest control effect can be obtained even with a short immersion time of 5 to 10 minutes when the immersion treatment is repeated every day. It is not always necessary to immerse for a certain period of time (3-4 hours for Brassica, 0.5-2 hours for Blue-worm).
[0023]
Next, the operation of the soaking process in the plant soaking apparatus having such a configuration will be described. When a pest is generated in the plant P or when it is desired to prevent the generation of the pest, the user first sets the immersion time on the operation panel 102. Specifically, in FIG. 5, the time setting button 32 is operated to input the immersion time (in the embodiment of FIG. 5, it is set to 50 minutes). Next, when the start / reset button 30 is pressed, the timer T of the control means starts measuring time and the display lamp 33 is turned on. At the same time, a DC voltage is applied to the motor 11 to rotate the elevating shaft 13 to wind the wire 14. Thereby, the plant planting panel 3 moves from the liquid level position to the immersion position. When the plant planting panel 3 reaches the dipping position, the position detection means 16a and 16b reach the facing position, a signal is sent to the control unit 101, and the rotation of the motor 11 is stopped. In FIG. 2, the longitudinal cross-sectional view when the plant planting panel 3 moves to the immersion position is shown. In this state, the plant P is completely immersed in the culture solution 2.
[0024]
At the soaking position, the planting panel 3 attempts to float by receiving the buoyancy of the culture solution 2 and thus reverse lifting torque is applied to the lifting shaft 13, but the lifting shaft 13 cannot rotate backward because of the worm gear 12. The plant planting panel 3 is held in the immersion position.
[0025]
And when the set immersion time passes, the control part 101 will apply the reverse voltage to the motor 11, reversely rotate the raising / lowering axis | shaft 13, will rewind the wire 14, and the plant planting panel 3 will be immersed by the buoyancy. Move from position to liquid level. When the plant planting panel 3 reaches the liquid surface position, the rotation of the motor 11 is stopped, the display lamp 33 is turned off, and the immersion process is completed. As a method of detecting that the plant planting panel 3 has reached the liquid level position, for example, a method of controlling the motor by calculating the driving time of the motor from the distance from the immersion position to the liquid level position, or the plant planting panel The motor rotation number when moving 3 from the liquid surface position to the immersion position is memorized, and when moving from the immersion position to the liquid surface position, the motor is reversely rotated by the stored motor rotation number, etc. It is done. In addition, as shown in FIG. 6, since a wire may loosen by an error, a liquid volume reduction, etc., it is desirable to absorb the slack of the wire 14 using the spring S on the bottom face of a cultivation tank.
[0026]
When it is desired to forcibly return the plant planting panel 3 to the liquid level during the dipping process, the start / reset button 30 may be pressed again. Thereby, the motor 11 reversely rotates in the same manner as at the end of the immersion treatment, and the plant planting panel 3 moves from the immersion position to the liquid level position. In addition, when the immersion time which can respond to a general plant is memorize | stored in the control part 101, it is only necessary to push the start / reset button 30 at the time of an immersion process, and operation becomes easier. Further, if the moving time of the plant planting panel 3 is lengthened by sufficiently slowing the rotation speed of the elevating shaft 13, the pest control effect may be substantially obtained even if the immersion time is zero.
[0027]
The size of the plant planting panel 3 floating in the cultivation tank 1 is desirably a size that covers the liquid surface of the culture solution 2 as much as possible in plan view within a range that does not hinder the movement by rubbing against the peripheral wall of the cultivation tank 1 during movement. This is to prevent impurities such as algae from being generated in the culture solution 2 by irradiation with sunlight. However, simply increasing the size of the plant planting panel 3 increases the resistance received from the culture solution 2 when the plant is moved, increasing the load on the moving means, increasing the size of the moving means and thus increasing the cost of the apparatus. Therefore, in order to reduce the resistance received from the culture solution 3, it is preferable to form a notch or a through hole in the plant planting panel. In addition, it is preferable to provide a lid member at the notch and the opening of the through hole in order to block the irradiation of sunlight to the culture medium.
[0028]
In FIG. 7, the top view which shows an example of the plant planting panel 3 is shown. FIG. 7 is a state diagram in which the plant planting panel 3 is floated on the cultivation tank 1. Chamfered portions (notches) 17 are formed at four corners of the plant planting panel 3, and two upper and lower through holes 19 are formed symmetrically from the center of the plant planting panel 3. An elastic sheet (lid member) 18 made of a rubber material is attached to the chamfer 17, and a cap (lid member) 20 is attached to the through hole 19. FIG. 8 is a sectional view taken along line AA in FIG. 7, and FIG. 9 is a sectional view taken along line BB in FIG. In FIG. 8, the top of the chamfered portion 17 is covered with an elastic sheet 18 having an end attached to the plant planting panel 3. For this reason, sunlight does not reach the liquid surface of the culture solution 2. On the other hand, when the plant planting panel 3 is moved from the liquid surface position to the immersion position, the elastic sheet 18 receives the resistance of the culture solution 2 and warps downstream in the moving direction (indicated by a broken line in the figure). A space through which the culture solution 2 can flow is formed between the peripheral wall and the peripheral wall. For this reason, the resistance by the culture solution 2 which arises when moving the plant planting panel 3 is reduced significantly.
[0029]
In FIG. 9, a cap 20 is inserted into the through hole 19. The cap 20 includes a disk portion 20a that closes the through hole 19 and a plurality of legs 20b that are suspended from the disk portion 20a and are loosely mounted in the through hole. A locking portion 20c is formed at the lower portion of the leg 20b so as to protrude radially outward so that the cap 20 does not come out when inserted into the through hole 19, and the cap 20 moves in the axial direction through the through hole 19. The length of the leg 20b is made longer than the thickness of the plant planting panel 3 so that it becomes possible. According to the cap 20 having such a configuration, when the plant planting panel 3 is floating, the opening of the through hole 19 is closed by the disk portion 20a of the cap 20 (FIG. 9A), and the sun Light does not reach the liquid surface of the culture solution 2. On the other hand, when the plant planting panel 3 is moved from the liquid level position to the dipping position, the cap 20 is locked to the plant planting panel 3 by the locking portion 20c due to the resistance of the culture solution 2 (same figure). (B)). At this time, the space between the legs 20b and the legs 20b becomes a liquid flow path, and the resistance due to the culture solution generated when the plant planting panel 3 is moved is greatly reduced. The material of the cap 20 is preferably a resin having a small specific gravity such as polyethylene or polypropylene.
[0030]
The size and number of the notches 17 and the through holes 19 may be appropriately determined from the material, size, shape, etc. of the plant planting panel 3 so as to reduce the resistance received from the liquid. Of course, the shape may be formed according to the size and shape of the notch and the through hole, and two or more types of lid members may be used in combination.
[0031]
In addition, in the said embodiment, it was the structure which moved the plant planting panel 3 between a liquid level position and an immersion position, but the cultivation tank 1 is moved with the plant planting panel 3 fixed on the contrary. Of course, a structure in which the plant planting panel 3 is set to the liquid level position and the immersion position may be used. Moreover, the moving means used by this invention should just move the plant planting panel 3 at least from a liquid level position to an immersion position, and the movement from an immersion position to a liquid level position is the buoyancy of the plant planting panel 3. Is desirable from the viewpoint of device structure and energy efficiency.
[0032]
Next, another embodiment of the plant planting apparatus of the present invention will be described. FIG. 10 shows an example when the worm gear is not used. Except for the gear portion, the description is omitted because it is the same as the embodiment.
[0033]
In the apparatus of FIG. 10, the rotation of the motor 11 is decelerated by a combination of several stages of spur gears. An engagement protrusion 22 is provided on the side surface of the final stage gear 21 that rotates on the same axis as the lifting shaft 13 on the side opposite to the lifting shaft 13. And the solenoid 23 is provided in the separation position on the opposite side to the raising / lowering axis | shaft 13 of the gearwheel 21. As shown in FIG. The solenoid 23 includes a plunger 24 that reciprocates in the axial direction of the gear 21. When the solenoid 23 is energized, the plunger 24 moves backward in the direction away from the gear 21, and when the solenoid 23 is not energized, the plunger 24 moves to the gear 21. Advance in the direction approaching. At the position where the plunger 24 is retracted, the engagement protrusion 22 and the plunger 24 of the gear 21 are not engaged, while at the position where the plunger 24 is advanced, the engagement protrusion 22 and the plunger 24 are engaged and the gear 24 is engaged. 21 becomes non-rotatable.
[0034]
As an operation in the dipping process, first, since the motor 11 and the solenoid 23 are not energized in the initial state, the plunger 24 is in the advanced position. Next, in order to immerse the plant planting panel 3, when the start / reset button is pressed, the solenoid 23 is energized, the plunger 24 moves backward, and the motor 11 rotates. Thereby, the raising / lowering axis | shaft 13 rotates, winds up the wires 14 and 14 ', and the plant planting panel 3 is immersed. When the plant planting panel 3 moves to the immersion position, signals are generated from the detection means 16a and 16b, and the motor 11 is stopped. At the same time, the solenoid 23 is also de-energized and advances to a position where the plunger 24 engages with the engaging protrusion 22. For this reason, since the rotation of the elevating shaft 13 is prevented by the engagement of the plunger 24 and the engagement protrusion 22 even if the plant planting panel 3 tries to float by buoyancy, the plant planting panel 3 is held in the immersion position. become. When a predetermined immersion time elapses, the solenoid 23 is energized again, the plunger 24 moves backward, and the gear 21 can rotate in the reverse direction, so that the plant planting panel 3 can float by buoyancy. In this embodiment, the solenoid 23 and the engagement protrusion 22 are holding means.
[0035]
Still another embodiment of the plant planting apparatus of the present invention will be described. FIG. 11 shows an operation panel as an example of the external input unit. The operation panel 102 includes an immersion time display unit 41, an immersion interval time display unit 42, an immersion time selection button 43, an immersion interval selection button 44, a time setting button 45, a start / reset button 46, a power display lamp 47, and an additional immersion button. (Immersion additional input unit) 48 and skip button (immersion skip input unit) 49 are provided. Usually, since the immersion process may be performed once a day, forgetting to execute the immersion process can be prevented by incorporating a program for executing the immersion process at intervals of 24 hours in the control unit 101. However, by providing a function for setting the immersion interval, it is possible to take fine pest control measures that prevent the occurrence of pests, such as performing an immersion treatment every 12 hours when pests are likely to occur.
[0036]
As a specific input method, first, when the immersion time selection button 43 is pressed, the number on the immersion time display section 41 blinks, so the time setting button 45 is pressed to set the immersion time. When the immersion time selection button 43 is pressed again, the number changes from blinking to lighting and the immersion time is determined. Similarly, the immersion interval is set by operating the immersion interval selection button 44 and the time setting button 45. In FIG. 11, the immersion time is set to 50 minutes and the immersion interval is set to 24 hours. Next, when the start / reset button 46 is pressed, the control unit 101 starts measuring time and the power display lamp 47 is turned on. At the same time, the plant planting panel 3 is moved from the liquid level position to the immersion position. Then, after a predetermined immersion time (50 minutes) has elapsed, the plant planting panel 3 moves from the immersion position to the liquid level position. This dipping process is performed every predetermined interval (24 hours). When the start / reset button 46 is pressed again during the dipping process, the power display lamp 47 disappears and the plant planting panel 3 moves from the dipping position to the liquid level position and returns to the initial state.
[0037]
Further, when it is desired to add the immersion treatment once depending on the state of the pests attached to the plant, the immersion addition button 48 may be pushed, and the immersion treatment is additionally performed while maintaining the set immersion time and immersion interval. The immersion time at this time may be the time shown in the immersion time display section (50 minutes in FIG. 11), or the immersion process may be terminated by pressing the additional immersion button 48 again. If it is made like the latter, immersion time can be made arbitrary and it can utilize also for operation check etc. of immersion treatment.
[0038]
On the other hand, when it is desired to reduce the number of times of immersion depending on the state of pest attachment to the plant, the skip button 49 may be pressed, and only the next immersion treatment is not performed while maintaining the set immersion time and immersion interval. If the immersion treatment set in this way can be added and skipped as appropriate, trial and error can be easily handled in accordance with the state of occurrence of pests. Also, since the original setting conditions are maintained, it does not take time to reset.
[0039]
Still another embodiment of the plant planting apparatus of the present invention will be described. FIG. 12 shows an operation panel as an example of the external input unit. This operation panel is obtained by replacing the setting of the immersion interval of the operation panel in FIG. 11 with the current time and the immersion time. A specific operation method will be described. The operation panel includes a current time display unit 51, an immersion time display unit 52, an immersion time display unit 53, a current time selection button 54, an immersion time selection button 55, an immersion time selection button 56 and a setting button 57, and a start / reset button 58. A power indicator lamp 59 is provided. Then, using the selection buttons 54, 55, and 56 and the setting button 57, the present time is set, the immersion start time is input, and the immersion time is input. When the setting of these immersion conditions is completed, the start / reset button 58 is pressed. Then, the power display lamp 59 is turned on, and the plant planting panel 3 moves from the liquid level position to the immersion position when the set immersion time is reached, and rises again to the liquid level position after the set immersion time has elapsed. Such a dipping process is repeated every day. In the operation panel device of FIG. 11, the immersion start time is the time when the start / reset button 46 is pressed. However, in this operation panel device, the immersion start time can be arbitrarily set, so that convenience is further improved. When the start / reset button 58 is pressed during the immersion process, the immersion process is stopped, the plant planting panel 3 rises to the liquid level position, the power display lamp 59 is turned off, and the initial state is restored.
[0040]
In the operation panel apparatus shown in FIG. 12, it is of course possible to provide an immersion addition button 48 and a skip button 49 as in the operation panel shown in FIG. If a plurality of immersion times can be set, the immersion treatment can be performed a plurality of times a day, and a finer pest control treatment can be performed.
[0041]
【The invention's effect】
The plant dipping apparatus of the present invention includes a moving means for relatively moving the plant planting panel from the liquid level position to the dipping position and a control means for controlling it, so that the plant planting panel can be easily dipped. And it can be done reliably. Moreover, since the holding means which hold | maintains a plant planting panel in an immersion position is further provided, an immersion process can be performed more safely and reliably. Moreover, since the control means is further provided with an external input unit for inputting start / stop of the immersion treatment, effective pest control can be appropriately performed in consideration of the type of plant, pest, climate, and the like. Furthermore, since the plant planting panel covers the entire liquid level of the cultivation layer and has at least one of a notch and a through hole, when the plant planting panel moves, while suppressing the generation of algae in the cultivation tank The resistance received from the liquid can be reduced, and the load on the moving means can be reduced. In addition, a lid member is provided in the notch and the through-hole so that the liquid can be circulated when the plant planting panel is relatively moved. It can be further suppressed.
[0042]
In addition, if the control means is further provided with an external input unit for inputting immersion conditions such as immersion time, immersion interval, and immersion time, more detailed and effective pest control in consideration of the types of plants, pests, climate, etc. It can be performed appropriately. Furthermore, an additional immersion input unit that additionally performs an immersion process between the set immersion process and the immersion process, or an immersion skip input unit that does not execute the next set immersion process is further provided as an external input unit. If it is provided, it will be able to respond flexibly according to the growing situation of plants and the occurrence of pests that change daily.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing an example of a plant immersion apparatus of the present invention.
FIG. 2 is a longitudinal sectional view when a plant planting panel is moved to a dipping position.
FIG. 3 is a partial cross-sectional view showing an example of a circumferential protrusion provided on the inner wall of the planting hole.
FIG. 4 is a block diagram showing an example of a plant immersion apparatus according to the present invention.
FIG. 5 is an enlarged plan view of an operation panel unit.
FIG. 6 is a configuration diagram for absorbing slack of a wire.
FIG. 7 is a plan view showing an example of a plant planting panel used in the present invention.
8 is a cross-sectional view taken along the line AA in FIG.
9 is a cross-sectional view taken along the line BB in FIG.
FIG. 10 is a longitudinal sectional view showing an example of moving means used in the present invention.
FIG. 11 is a plan view showing an example of an operation panel used in the present invention.
FIG. 12 is a plan view showing another example of the operation panel used in the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Cultivation tank 2 Culture solution 3 Plant planting panel 10 Control means 11 Motor (moving means)
17 Notch 18 Elastic sheet (lid member)
19 Through hole 20 Cap (lid member)
102 Operation panel (external input unit)

Claims (2)

A cultivation tank filled with liquid,
A plant planting panel floating on the liquid surface in the cultivation tank;
Holding means for holding the plant planting panel in a dipping position;
Moving means for relatively moving the plant planting panel from at least a liquid surface position to a dipping position; and control means for controlling the operation of the moving means ;
In the plant dipping apparatus, wherein the control means includes an external input unit for inputting / starting dipping treatment start / stop and / or dipping conditions,
The plant planting panel covers the entire liquid level of the cultivation layer, and has at least one of a notch and a through hole,
In the opening of the notch and the through-hole, provided with a lid member that allows the liquid to flow during relative movement of the plant planting panel,
A plant dipping device in which the resistance that the plant planting panel receives from the liquid during relative movement from the liquid surface position to the dipping position is reduced . The immersion condition is at least one of immersion time, immersion interval, and immersion time;
The external input unit is an immersion additional input unit that additionally executes an immersion process between the set immersion process and the immersion process, and at least an immersion skip input unit that does not execute the next immersion process that is set The plant immersion apparatus according to claim 1 , further comprising one side .

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