JPH09135634A - Seedling transplanting apparatus for raising seedling on tray - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seedling transplanting apparatus for the raising seedling on a tray, having a pressing device to press the culture medium around a transplanted seedling, effective for preventing the exposure of the seedling root to the outer atmosphere and achieving improved rooting rate. SOLUTION: This transplanting apparatus is provided with a seedling transplanting part and a pressing device 12. The seedling transplantation part takes a seedling together with a culture medium out of a raising seedling pot 4 of a 1st raising seedling tray with a plurality of claw plates 10 placed oppositely to each other and the pressing device 12 presses the culture medium around the transplanted seedling. Preferably, the pressing device 12 is provided with a prescribed number of supporting arms 30 each having a pressing plate 29 at its tip end and each pressing plate 29 is supported by a supporting member 14 in a state freely movable in a direction along each claw plate 10 to enable the pressing of a prescribed region of the culture medium in the raising seedling pot 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seedling transplanting apparatus for tray raising seedlings.

[0002]

2. Description of the Related Art Conventionally, in the above-mentioned seedling transplanting apparatus for tray raising, seedlings are taken out from the seedling raising pot of the first seedling raising tray together with a plurality of opposed nail plates, and the seedlings are raised in the second seedling raising tray. Only the seedling transplanting part for transplanting to the pot was provided, and the transplanted seedlings were left as they were and almost no modification was made except for watering.

[0003]

In the above-mentioned transplantation using the nail plate, a gap is likely to be formed between the inner peripheral wall of the pot for growing seedlings and the peripheral surface of the medium of the transplanted seedlings. Because I hardly changed the seedlings,
The roots of the seedlings tended to get worse because the roots touched the outside air.

An object of the present invention is to improve rooting of seedlings transplanted in a pot for growing seedlings.

[0005]

[Means for Solving the Problems]

[Structure] The characteristic structure of the invention according to claim 1 is to take out the seedlings together with the medium from the seedling-growing pots of the first seedling-raising tray with a plurality of mutually facing nail plates, and transplant them to the seedling-growing pots of the second seedling-raising tray. In addition to providing a seedling transplanting section, a pressure suppression device for suppressing the culture medium of the transplanted seedlings is provided.

According to a second aspect of the present invention, in the first aspect of the present invention, a predetermined number of support arms each having a pressure suppressing plate at a tip thereof are provided such that each pressure suppressing plate is fixed to a medium in the seedling growing pot. The pressure suppression device is configured to be supported by a support member so as to be movable up and down in a direction along each claw plate so as to be able to correspond to each region.

According to a third aspect of the present invention, in the first aspect of the present invention, a predetermined number of support arms each having a compression roller at the tip thereof are provided, and each compression roller is predetermined in the medium in the pot for growing seedlings. To support each region, the support member is supported so that it can be driven up and down, and when the support arm is lowered, the pressure suppression roller is grounded to the medium in the seedling-growing pot, and the pressure suppression roller is rolled laterally. The crushing device is configured by providing a lateral movement mechanism for movably moving.

According to a fourth aspect of the present invention, in the first aspect of the invention, a support arm having a compression roller at its tip is supported by a support member so as to be movable up and down, and the support arm descends to cause the support arm to descend. In the state where the pressure roller is grounded to the medium in the pot for growing seedlings, a lateral movement mechanism for rolling the pressure roller in the lateral direction is provided, so that the medium can be sequentially pressure-controlled in predetermined regions. The compression device is configured by providing a phase changing mechanism for changing and adjusting the arrangement phase around the support member.

[Operation] According to the constitution of claim 1, [a] seedlings are taken out together with the culture medium from the seedling raising pots of the first seedling raising tray by a plurality of mutually facing nail plates, and the seedling raising pots of the second seedling raising tray. After transplanting to, the medium of the transplanted seedlings is squeezed by a squeezing device, so even if a gap is created between the inner peripheral wall of the seedling-growing pot and the peripheral surface of the transplanted seedlings, the seedling's The peripheral surface of the medium can be pressed against the inner peripheral wall of the pot for growing seedlings to eliminate the gap, and the roots of the seedlings can be prevented from touching the outside air.

According to the second aspect of the present invention, [b] a predetermined number of support arms are driven and lowered in the direction along each claw plate, and the pressure-reducing plate at the tip portion causes a predetermined region of the medium in the seedling growing pot to move. Suppress each.

According to the third aspect of the present invention, [C] a predetermined number of support arms are driven down, and the repressing roller at the tip is grounded to each predetermined region of the culture medium in the pot for growing seedlings. Then, the lateral movement mechanism is actuated to roll the compression roller in the lateral direction to compress the predetermined area.

According to the structure of claim 4, [d] the support arm is driven down, and the pressure reducing roller at the tip is grounded to a predetermined region of the medium in the seedling-growing pot. Is actuated, the compression roller rolls laterally to compress the predetermined area. Then, the arrangement phase of the supporting arm around the supporting member is changed and adjusted by the operation of the phase changing mechanism, and another predetermined region of the culture medium is suppressed in the same manner as described above. According to the structure of claim 4, the medium is sequentially squeezed in predetermined regions in this manner.

[E] As a result, according to the constitutions of the second to fourth aspects, it is possible to achieve the same operation as the above-mentioned [A].

[Effect] Therefore, according to the present invention, it becomes possible to improve the rooting of the seedlings transplanted to the seedling-growing pot by the above-mentioned action [a].

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION As shown in FIGS. 1 and 2, a plurality of second seedling raising trays 1B are placed on a tray cradle 2 on which a tray raising seedling management device is placed. In this second seedling raising tray 1B, a large number of seedling-growing pots 4 having a truncated pyramidal shape are formed vertically and horizontally, and seedlings are being grown in each seedling-growing pot 4.

The tray seedling raising management device includes a defective plant removing device 6 for removing defective plants in the seedling growing pot 4.
A planting device 7 (an example of a transplanting device) for supplementing good plants in the pot 4 for growing seedlings after removal of defective plants is mounted on a device frame 9 having a square frame shape via a support stand 15 for mounting and supporting them. The wheel 5 provided in the lower part of the device frame 9 is mounted on the device pedestal 16 on one end side of the device frame 9, and the control device 8 for driving and controlling the defective plant removing device 6 and the supplementary planting device 7
Is mounted on the rails 3 at both ends of the tray pedestal 2, and the electric motor M is driven so that the rails 3 can travel. A first seedling raising tray 1A (having the same shape as the second seedling raising tray 1B) on which a good plant for supplementary planting is growing is placed on the device cradle 16.

The support table 15 is different from the device frame 9 in the device frame 9 so that the defective plant removing device 6 and the supplementary planting device 7 can correspond to all the seedling growing pots 4 of all the second seedling raising trays 1B. Are provided so as to be movable in the traveling direction and the direction orthogonal thereto.

That is, the first guide rails 25 are provided on the upper surfaces of the pair of side frames along the traveling direction of the apparatus frame 9 along the longitudinal direction of the side frames, and the movable frames 26 having rollers at both ends are provided. , Both rollers are rotatably mounted on the first guide rail 25 and straddle both side frames, and further, the movable frame 2
A second guide rail 27 is provided on the upper surface of 6 along the longitudinal direction, and the roller provided on the first support 15 is placed on the second guide rail 27. Then, each roller is driven and rotated by an electric motor that is drive-controlled by the control device 8,
As described above, the defective plant removing device 6 and the like are configured to be compatible with all the seedling growing pots 4 of all the second seedling raising trays 1B. The position changing mechanism 11 is composed of the first support 15 and the rollers of the movable frame 26, and the first and second guide rails 25 and 27.

The position changing mechanism 11 is also configured to be drive-controllable by the control device 8, and a predetermined position, which the operator visually inspects beforehand and inputs to the control device 8, for example,
The first seedling raising tray 1A in which the defective plant removing device 6 can be positioned above the seedling growing pot 4 in the defective plant state and which is growing the good plant for supplemental planting placed on the equipment pedestal 16 The supplementary planting device 6 can be located above the seedling growing pot 4 and above the seedling growing pot 4 of the second seedling raising tray 1B from which defective plants have been removed.

As shown in FIGS. 3 and 4, in the defective stock removing device 6, the defective stock removing device main body 6a is cantilevered by an internal cylinder (not shown) so as to be vertically movable. Four first cylinders S1 are attached to the bracket 14 in a downward posture, and a claw plate 10 for holding a defective plant of the seedling-growing pot 4 is attached to a tip end portion of a piston rod of the first cylinder S1. That is, the bracket 14 descends so that each claw plate 10 approaches the seedling-growing pot 4, and each claw plate 10 plunges into the seedling-growing pot 4 by the extension drive of the first cylinder S1 with the claw proximity state. The bracket 14 is raised while the plunging claw plate 10 is stationary, and the defective stock is taken out.

Further, the distance between the tip portions of the claw plates 10 is variable and adjustable, and the claw plates 10 are inserted in the vertical direction A along the inner wall of the seedling-growing pot 4 (see FIG. 6).
(Refer to FIG. 4) and the open position B (see FIGS. 4 and 5) in which the tip end of each claw plate 10 is opened to the back side of the claw plate 10 is provided. The switching means K is controlled by the control device 8 so as to descend in the open posture B so that the tip end surface reaches near the upper surface of the seedling growing pot 4 and plunge into the seedling growing pot 4 in the plunging posture A.
It is configured so that switching can be controlled by.

More specifically, an opening 33 (see FIG. 3) is formed on the free end side of the bracket 14, and a cylinder mounting portion is provided around the opening 33 to connect the four first cylinders S1. , They are dispersed around the vertical axis of the opening 33 and face each other one by one, and the horizontal axis P on the lower end side.
A spiral spring pivotally supported by a bracket 14 via a rocking member 32 so as to rock around, and rocks and biases each claw plate 10 to a position on an extension line of the seedling-growing pot 4 (Fig. (Not shown) is provided in the pivot portion, the third cylinder S3 is supported by the bracket 14 so that its tip end faces the opening 33, and the opposite end portions of all the swinging members 32 are vertically spaced. The pair of clamping pieces 34 that are opened and sandwiched are
It is provided at the tip of the piston rod of the cylinder S3, and the piston rod of the third cylinder S3 moves up and down under the control of the control device 8 so that each claw plate 10 switches between the thrusting posture A and the opening posture B. Configured. The switching means K is constituted by the third cylinder S3, the pair of sandwiching pieces 34, and the like.

The defective stock removing device 6 includes the cylinders in the main body 6a of the defective stock removing device, that is, the first and third cylinders S1 and S3.
Are controlled by the control device 8 and operate as follows.

(1) As shown in FIG. 4, the third cylinder S3 is driven downward by a predetermined amount in a state of being located above the seedling growing pot 4 of the second seedling raising tray 1B in the defective plant state, The upper gripping piece 34 of the piston rod pushes down the opposing ends of all the swinging members 32, and each claw plate 10 swings around the horizontal axis P toward the claw plate back side to the open position B. Become. The open posture B may be set before the seedling growing pot 4 in the defective plant state is positioned above.

(2) The cylinder in the defective plant removing apparatus main body 6a is driven to extend, the bracket 14 is lowered, and the tip surface of the claw plate 10 comes close to the upper surface of the seedling growing pot 4 (see FIG. 5).

(3) As shown in FIG. 6, the third cylinder S3
Is driven upward, and the clamping piece 34 on the lower side of the piston rod
However, the opposite ends of all the swinging members 32 are pulled up, and each claw plate 10 swings to the claw plate abdomen side around the horizontal axis P to be in the thrusting posture A.

(4) As shown in FIGS. 7 and 8, the first cylinder S1 is driven to extend, and the claw plate 10 plunges into the seedling-growing pot 4 and stands still.

Since each of the nail plates 10 plunges into the seedling-growing pot 4 as described above, the nail plate 10 will not be removed even if the leaves of the plant are outside the peripheral wall of the seedling-growing pot 4. When descending, it becomes difficult to contact the leaves of the plant, and it is possible to prevent the cut leaves from being scattered around the seedling-growing pot 4.

As shown in FIGS. 8 and 9, the four first
The cylinders S1 are extended and driven at different timings one by one, so that the respective claw plates 10 are rushed to stand separately. Therefore, for example, compared with the case where all of the nail plate 10 plunges into the medium at once, the pressing force that the medium receives when plunging the nail plate 10
It is possible to disperse the pressing force for each nail plate 10 and to easily release those pressing forces in the lateral direction of the nail plate 10 in the medium, so that the medium is crushed by the nail plate 10 and collapsed. It can be prevented.

(5) As shown in FIG. 10, the cylinder in the defective plant removing device main body 6a is driven to shorten and the bracket 14 rises, the defective plant is held by the nail plate 10 and the seedling growing pot 4 is held.
Remove from

When the step (5) is completed, the support base 15
Moves, and the defective stock removing device 6 is located above the recovery tray 1C on the equipment pedestal 16, and the first cylinder S1 is shortened to drop the defective stock on the recovery tray 1C.

As shown in FIG.
The first on the device pedestal 16 with the claw plates 10 of the book facing each other
A seedling transplanting section is provided for taking out the good strains together with the medium from the seedling raising pots 4 of the seedling raising tray 1A and transplanting the good strains to the seedling raising pots 4 of the second seedling raising tray 1B on the tray cradle 2, and a medium for the transplanted strains. A pressure suppressing device 12 for suppressing the pressure is provided.

The seedling transplanting part has the same structure as the defective plant removing device 6, and the auxiliary transplanting device main body 7a is mounted on a bracket 14 which is cantilevered and supported by an internal cylinder (not shown). The first cylinder S1 of the book is attached in a downward posture, and at the piston rod tip of this first cylinder S1,
The nail plate 10 for holding the good stocks of the seedling-growing pot 4 is attached thereto.

As shown in FIG. 11, FIG. 12, FIG. 13, and FIG. 14, the compression device 12 includes four support arms 30 each having a lateral compression plate 29 at the tip thereof.
Is supported by the rocking members 32 so as to be movable up and down in the direction along the claw plates 10 so that the medium in the seedling growing pot 4 can correspond to each predetermined region. Specifically, four second cylinders S2 are separately fixed to the outer end of each swing member 32 in a downward posture along each claw plate 10 (FIG. 13), and the seedling growing pot 4 Suppression plate 29 corresponding to one side (FIG. 14)
Four support arms 30 each having the above are separately attached to the piston rod tip portion of the second cylinder S2.

The supplementary planting device 7 has a main body 7a for the supplemental planting device.
A cylinder not shown in the figure (this cylinder moves the bracket 14 up and down with respect to the prosthetic plant main body 7a similarly to the cylinder in the defective plant removing main body 6a), and the first to third cylinders S1. , S2, S3, etc. are control devices 8
It is driven and controlled by and operates as follows. Since many operations are common to the defective stock removal device 6, those operations are not shown in the drawing, and the defective stock removal device 6 is not shown.
The operation will be described with reference to FIGS.

(1) The third cylinder S3 is driven downward by a predetermined amount in a state of being positioned above the seedling growing pot 4 of the first seedling raising tray 1A in which good strains are being raised, and the upper side of the piston rod is clamped. The pieces 34 push down the opposing ends of all the swinging members 32, and each claw plate 10 swings to the claw plate back side around the horizontal axis P (see FIG. 4). . The open attitude B may be set before the vehicle is positioned above. (2) The cylinder in the supplementary planting apparatus main body 7a is driven to extend, the bracket 14 descends, and the tip surface of the claw plate 10 approaches the upper surface of the seedling growing pot 4 (see FIG. 5). (3) The third cylinder S3 is driven to move upward, the sandwiching pieces 34 on the lower side of the piston rod pull up the opposing ends of all the swinging members 32, and the claw plates 10 move around the horizontal axis P. It swings to the abdomen side of the claw plate and becomes the thrusting posture A (see FIG. 6). (4) The four first cylinders S1 are driven to extend by shifting the timing one by one, and each claw plate 10 plunges into the seedling-growing pot 4 separately and stands still (FIGS. 7, 8, and 9). reference). (5) The cylinder in the supplementary planting apparatus main body 7a is driven to shorten and the bracket 14 rises, and the good plant is taken out from the seedling growing pot 4 while being held by the nail plate 10 (see FIG. 10). The said
When the step (5) is completed, the support table 15 moves, and the supplementary planting device 7 is located above the seedling-growing pot 4 of the second seedling-raising tray 1B from which the defective plants have been removed. (6) As shown in FIG. 11, the claw plate holding the good plant in the seedling growing pot 4 from which the defective plant was removed by driving the cylinder in the main body 7a of the prosthetic plant to extend again and lowering the bracket 14. 10 rushes in and stands still. (7) The first cylinder S1 is shortened and driven, and each claw plate 10 retreats upward while leaving a good plant in the seedling-growing pot 4. (8) As shown in FIG. 12, the second cylinder S2 is driven to extend, the four support arms 30 are simultaneously lowered, and the respective pressure-reducing plates 29 correspond to the sides of the medium of the seedling-growing pot 4. Are suppressed (see FIG. 14). The inner wall of the pot for growing seedlings,
The gap formed between the transplanted seedlings and the peripheral surface of the medium can be eliminated by this suppression, and the roots of the seedlings can be prevented from touching the outside air. (9) The second cylinder S2 is driven to shorten, and the four support arms 30 simultaneously rise.

The supplementary planting is completed as described above, but the device frame 9
When the supplementary planting around is completed, the device frame 9 is moved to the rail 3
Along the new second seedling raising tray 1B, the defective plants are removed from the seedling raising pots 4 of the second seedling raising tray 1B, and the good plant is supplemented.

The cylinder in the defective plant removing device 6 and the first cylinder S1 for the nail plate of the defective plant removing device 6 constitute a nail plate elevating and lowering drive part of the defective plant removing device 6, and the supplementary planting device 7 First for the cylinder in and the claw plate 10 of the prosthetic device 7
The cylinder S1 constitutes a nail plate lifting drive unit in the supplementary planting device 7.

[Other Embodiments] The pressure suppressor 12 may be configured as shown in [1], [2] and [3] below. [1] As shown in FIGS. 15, 16, 17, and 18,
Four support arms 30 having a compression roller 31 at the tip
Is supported by a bracket 14 (an example of a supporting member) so that each compression roller 31 can correspond to a predetermined area in the medium in the seedling growing pot 4, and the compression arms 31 are lowered by lowering the support arm 30. A lateral movement mechanism 35 is provided for laterally rolling the compression roller 31 while being grounded to the medium in the seedling growing pot 4.

Each of the four support arms 30 is suspended and supported by the bracket 14 so as to correspond to the corner portion of the seedling-growing pot 4. Then, the directions of the four compression rollers 31 are set so that they are along each side of the seedling-growing pot 4 (see FIG. 18), and the roller 3
A spring 3 configured to freely bend the support arm 30 around a horizontal axis along one axis and to urge the support arm 30 to extend.
6 is provided, and as the bracket 14 descends, each pressure roller 31 comes into contact with the corner of the culture medium (FIGS. 15 and 16), and the support arm 30 bends while resisting the urging force. The compression roller 31 rolls and suppresses the adjacent corner of the medium (FIGS. 17 and 18), and the bracket 1
The support arm 30 is configured to return and extend as 4 moves up. The lateral movement mechanism 35 is composed of a cylinder that drives the bracket 14 up and down, a waist bending structure of the support arm 30, a spring 36 that extends and urges the support arm 30, and the like.

Although not shown, the pressure suppressor 12 is a claw plate 10.
The tip of the nail plate 10 is configured so as not to interfere with the seedling-growing pot 4 when the nail plate 10 is moved downward.

[2] As shown in FIGS. 19A and 19B, this embodiment is a modification of the above embodiment [1], and the structure of the support arm 30, the lateral movement mechanism 35, etc. Although the same, in this structure, only one pair of the support arms 30 are provided, and both support arms 30 can respectively correspond to a pair of corner portions facing each other with the center of the seedling-growing pot 4 interposed therebetween. It is suspended and supported by a bracket 14. Then, a phase changing mechanism 37 for changing and adjusting the arrangement phase of the support arm 30 around the bracket 14 is provided so that the medium can be sequentially suppressed in predetermined regions (FIGS. 21A and 21B). This phase changing mechanism 37 is an electric motor 39 with respect to the bracket 14 and is connected to the bracket 14 about the vertical axis.
The pair of support arms 30 are supported by a rotating member 38 that rotates by 0 °. FIG. 20 shows a suppressed state. [3] Although not shown, a horizontal cylinder is attached to the lower end of the support arm 30 that does not bend, and the compression roller is provided on the piston rod of the support cylinder 30.
The lateral movement mechanism in [2] may be configured so that the compression roller is rolled and compressed laterally by expansion and contraction of the cylinder.

As shown in FIG. 22, the fourth cylinder S4 is attached to the bracket 14 of the defective plant removing device 6 in a downward posture, and the piston rod is provided with the suction nozzle N.
The suction nozzle N may be brought close to the defective plant in a state where the nail plate 10 is thrust into the seedling-growing pot 4 of the defective plant to suck and remove the defective plant.

It should be noted that although reference numerals are given in the claims for convenience of comparison with the drawings, the present invention is not limited to the configurations of the accompanying drawings by this entry.

[Brief description of the drawings]

FIG. 1 is an overall perspective view of a tray seedling raising management device.

[Figure 2] Front view in vertical section of a tray seedling raising management device

FIG. 3 is a plan view of the defective plant removing device.

FIG. 4 is a side view of the defective plant removing device with the claw plate in an open posture.

FIG. 5 is a side view of the defective plant removing apparatus showing a state where the nail plate is close to the upper surface of the seedling growing pot.

FIG. 6 is a side view of the defective stock removing device in which the nail plate is in a rushing posture state.

FIG. 7 is a side view of the defective plant removing device showing a state where the nail plate is thrust into the seedling growing pot.

FIG. 8 is a side view of the defective plant removing device showing a state where the nail plate is thrust into the seedling growing pot.

FIG. 9 is a side view of the defective plant removing device showing a state where the nail plate has plunged into the seedling growing pot.

FIG. 10 is a side view of the defective plant removing device showing a state where the defective plant is taken out from the seedling growing pot.

FIG. 11 is a partially cutaway side view of the supplementary planting device.

FIG. 12 is a partially cutaway side view of the supplementary planting apparatus showing a state where the medium of the seedling-growing pot is suppressed

FIG. 13 is a plan view of a supplementary planting device.

FIG. 14 is a cross-sectional plan view showing the positional relationship between the respective compression plates.

FIG. 15 is a diagram showing a state immediately before the suppression of pressure in another embodiment.

FIG. 16 is a diagram showing a state immediately before the suppression of pressure in another embodiment.

FIG. 17 is a view showing a squeezed state in another embodiment.

FIG. 18 is a view showing a squeezing operation in another embodiment.

FIG. 19 (a) is a diagram showing a state immediately before pressure suppression in another embodiment. (B) is a diagram showing a state immediately before pressure suppression in another embodiment.

FIG. 20 is a view showing a crushed state in another embodiment.

FIG. 21 (a) is a diagram showing a compression operation in another embodiment. (B) is a diagram showing a compression operation in another embodiment.

FIG. 22 is a view showing another embodiment.

[Explanation of symbols]

 4 Pot for growing seedlings 12 Suppressor 14 Support member 29 Suppression plate 30 Support arm 35 Lateral movement mechanism 37 Phase changing mechanism 1A 1st seedling tray 1B 2nd seedling tray

Claims (4)

[Claims] 1. A seedling growing medium for a second seedling raising tray (1B) is taken out from the seedling raising pot (4) of the first seedling raising tray (1A) together with the medium by a plurality of mutually facing nail plates (10). In addition to providing a seedling transplanting part for transplanting into the pot (4),
A seedling transplanting apparatus for tray raising seedlings, which is provided with a pressure suppressor (12) for suppressing the medium of the transplanted seedlings. 2. A predetermined number of support arms (30) each having a pressure-reducing plate (29) at its tip end, each pressure-reducing plate (29) being able to correspond to a medium in the seedling-growing pot (4) in a predetermined region. The tray seedling transplantation device according to claim 1, wherein the pressure suppression device (12) is configured by being supported by a support member (14) so as to be movable up and down along a direction along each claw plate (10). 3. A predetermined number of support arms (30) provided with a compression roller (31) at the tip end, each compression roller (31) being able to correspond to the medium in the seedling-growing pot (4) for each predetermined region. Is supported by a support member (14) so that it can be moved up and down,
Lateral movement in which the pressure-reducing roller (31) rolls laterally while the pressure-reducing roller (31) is grounded to the culture medium in the seedling-growing pot (4) by lowering the support arm (30). By providing a mechanism (35), the pressure suppression device (1
2. The tray seedling transplanting apparatus for raising seedlings according to claim 1, which is configured as 2). 4. A support arm (30) having a compression roller (31) at its tip is supported by a support member (14) so as to be movable up and down, and the compression roller (31) is lowered by lowering the support arm (30). Is grounded to the culture medium in the seedling-growing pot (4), a lateral movement mechanism (35) for rolling the compression roller (31) in the lateral direction is provided, and the culture medium is sequentially compressed in predetermined regions. If possible, the support arm (3
The seedling transplanting apparatus for tray raising according to claim 1, wherein the pressure suppression device (12) is configured by providing a phase changing mechanism (37) for changing and adjusting the arrangement phase of the 0) around the support member (14).