JPH0749A - Production of grafted nursery plant - Google Patents

Abstract

PURPOSE:To smoothly insert a grafted nursery plant after grafting into a pot part of a square when viewed in the plane in a tray, stabilize the grafted nursery plant and improve the subsequent raising performance. CONSTITUTION:A stems of a stock and a scion are held with separate holding mechanisms and the stock drawn out of a pot part in a noncircular form when viewed in the plane in a tray 2 is then rotated in a prescribed direction around the axial line of the stem so as to provide a constant phase of cotyledons thereof. At least the stem of the stock is rotated around the axial line thereof so that the direction of the cotyledons in the stock and scion may be in a constant relationship. Both stems of the stock and scion are joined at a place of a cut surface and fixed. After completing the grafting operation, the control is carried out as follows: A grafted nursery plant (C) is held with a transfer mechanism 58 and rotated around the stem axial line by an angle in which the direction of a root ball (a) of the grafted nursery plant (C) coincides with that of the pot part 6 in the tray 2 on a discharging conveyor 10 by this transfer mechanism 58. Thereby, the grafted nursery plant (C) is returned to the pot part 6 of the tray 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention arranges the stem of a rootstock and the stem of a scion on a substantially coaxial line so that the directions of the cotyledons of the rootstock and the scion have a constant relationship, and both of them are arranged. The present invention relates to a method for producing grafted seedlings that are fixed by joining (overlapping) at cut surfaces.

[0002]

2. Description of the Related Art Conventionally, a cotyledon of a rootstock is cut off so that the cotyledon of the rootstock and the cotyledon of the rootstock do not overlap each other in a plan view. Japanese Patent Application Laid-Open No. 4-187029 discloses a grafting device that automatically joins the two cut surfaces and fixes them with a graft clip.

According to this prior art, since the rootstocks (cobs) are accommodated in a matrix for storing seedlings in a matrix form vertically and horizontally in a plan view, the tray has a recessed circular pot in plan view. From below each of these pots, the root pots of the rootstocks (spikes) are pushed out by the push-out pins, while the stems of the rootstocks (spinches) are moved back and forth in the X direction in plan view by the first seedling take-out arm. , And once placed on the seedling turntable, the cotyledon of the rootstock (hob) is detected by an optical sensor when the seedling turntable rotates in a certain direction,
Detects the cotyledon expansion direction.

The seedling turntable is stopped at a position where the developing direction of the cotyledons is constant, and then the stem of the rootstock (spike) is sandwiched by the second seedling take-out arm which can reciprocate in the Y direction in plan view. To do. In this case, in the scion, the stem of the scion is held so that the cotyledon expansion direction is the rotational tangential direction of the subsequent scion processing mechanism, and in the rootstock, the cotyledon expansion direction is the subsequent rootstock processing. When the stem is held so as to face the center of rotation of the mechanism, the cotyledon expansion direction of the rootstock in the grafted seedling when the cut surfaces of the rootstock and the scion at the grafting work section are abutted and fixed. And the direction of development of the cotyledons of Hobiki intersect in a direction of approximately 90 degrees in a plan view.

Then, at the stem collecting points of the rootstock processing mechanism and the scion processing mechanism, they are fixed by graft clips.

[0006]

By the way, in the above-mentioned prior art, the grafted seedlings which have completed the grafting work as described above are dropped onto the discharge conveyor below and carried out, and grafted onto the container at the end of the discharge conveyor. Is accommodated. Therefore, when the grafted seedling falls, the root pot collides with the discharge conveyor to cause root collapse (collapse of soil), or the grafted seedling is laid sideways and loosely fixed by the grafting clip,
There is a problem that the grafted seedlings have poor viability due to inconveniences such as bending of stems.

The present invention has been made to solve this problem, and is to return the grafted seedlings after the grafting work to the pots of the empty trays, and in particular to the pots of the original trays. If the shape of the pot in the tray is non-circular such as rectangular or hexagonal, the shape of the root pot of the grafted seedlings (the shape of the root pot of the original root plan)
The purpose is to rotate the phase to the same direction as the bowl part of the tray and to return it to the original position properly.

[0008]

In order to achieve the above object, a method for producing grafted seedlings according to the present invention is to hold a rootstock and a scion with their stems by separate holding mechanisms, and to view them in a plan view on a tray. The rootstock extracted from the non-circular pot part is rotated in a predetermined direction around the axis of the stem so that the phase of the cotyledon is constant, and the direction of the cotyledons in the rootstock and the scion is fixed. Rotate at least the stem of the rootstock around its axis so that it joins and fix it at the cut surface of both stems of the rootstock and the scion after the grafting work is completed. It is characterized in that it is controlled so as to be returned to the bowl portion of the tray by rotating around the stem axis by an angle such that the orientation matches the orientation of the bowl portion of the tray.

[0009]

EXAMPLE Next, an example in which the present invention is embodied will be described. FIG. 1 is a schematic plan view of a graft graft production facility 1, and FIG.
Shows a front view taken along line II-II of FIG. 1, respectively. In the grafting seedling manufacturing facility 1, a grafting work unit 3 for grafting the rootstock A and the earstock B is arranged in the center, and the rootstocks A and the earstock B are arranged in a matrix in a plan view on both left and right sides thereof. Supply conveyors 4 and 5 for intermittently carrying the tray 2 made of synthetic resin in the direction of arrow x, and the rootstock A (spoon B) are pulled out from the pot portion 6 in the tray 2 toward the grafting work 3. A holding mechanism 7, 8 for transferring is arranged. Reference numeral 9 is a post-processing work unit for returning the grafted seedling C which has completed grafting work to the empty tray 2, reference numeral 10 is a discharge conveyor for discharging the tray 2 storing the grafted seedling C, and reference numerals 11 and 12 are empty trays. It is a storage part for stacking and storing 2 vertically.

As shown in FIGS. 3 and 4, the tray 2 made of synthetic resin having a rectangular shape in a plan view has a cell-shaped tray portion 6 having a rectangular shape in a plan view arranged in a matrix in the vertical and horizontal directions (in the embodiment, 5 in the horizontal direction). Individual,
The seedlings of the rootstock A and the saplings B of the rootstock A are preliminarily grown at locations not shown in the drawings, which are integrally molded so as to be arranged vertically (8 pieces). Since the holding mechanisms 7 and 8 for the rootstock and the earstock have substantially the same configuration, the holding mechanism 7 for the rootstock will be described with reference to FIGS. 3 to 5.
Will be described as a representative, and the other holding mechanism 8 for the spike will be omitted.

A gate-type gantry frame 13 to which a holding mechanism 7 (8) is movably mounted is erected upright above both left and right supply conveyors 4, 5. Below the gantry frame 13 and above the supply conveyors 4 and 5, an air cylinder 15 fixed to a support frame 14 is provided.
Is provided with a horizontally long restricting body 16 that moves back and forth along the x direction. In addition, the pot portion 6 of the tray 2 which is transferred by the positioning sensor including the light projecting portion 17a and the light receiving portion 17b.
Is detected, the supply conveyor 4 (5) is intermittently moved at every interval of the bowl portions 6 in the x direction, and stopped for an appropriate time. Above the stopped tray 2, the rootstock A planted in the tray 2 is attached to the front end edge of the regulation body 16 when moving in the opposite x direction.
Stems abut, the rootstocks A are aligned in a horizontal straight line, and positioning in the x-direction coordinate is executed. Note that a stopper (not shown) may be provided in order to regulate the projecting movement distance of the regulation body 16.

A hook-shaped positioning member 18 provided on the restriction member 16 at a constant lateral interval rotates about a pin 19 and the positioning member 18 is actuated by a rotary actuator 21 via a connecting rod 20. 5 is moved to the solid line state in FIG. 5, the stem of the rootstock A is held between the front end edge of the regulation body 16 and the positioning in the y direction is executed. A holding mechanism 7 for holding the stem portion in close proximity to the positioned rootstock A.
Is a side view U-shaped base frame 22, a side view U-shaped holding frame 24 that rotates around a support pin 23 outside the base frame 22, the base frame 22 and the suspension support 25. And a rotary actuator 26 (see FIGS. 3, 6 and 7) interposed therebetween, and the suspension support 25 is an actuator that can rotate forward and backward about its vertical axis and can move up and down. is there.

At the tip of the holding frame 24 and at the tip of the base frame 22, holding fingers 27a and 27b are provided, each having an inner surface with a member such as soft rubber that does not damage the stem to be held. When the holding frame 24 is rotated in the clockwise direction in FIG. 7 via the rotating arm 28 by the normal rotation operation of the rotating actuator 26, the left and right holding finger portions 27a and 27b hold the stem of the rootstock A. When the holding frame 24 is held and is rotated counterclockwise by the reverse rotation operation of the rotation actuator 26, the holding of the stem is released.

When the stem of the rootstock A is grasped by the holding mechanism 7 and pulled out from the tray 2, an ejecting pin 31 protruding upward from the case 30 is provided at a midway portion (interruption portion) of the supply conveyor 4. Driving means 3 such as an electromagnetic solenoid
2 is provided so as to be operated intermittently, and when the protrusion pin 31 is raised from the hole formed in the bottom plate of the bowl portion 6 of the tray 2, the rootstock positioned in the x direction and the y direction as described above. The root pot part a of A can be projected so as to be smoothly lifted from the pot part 6 of the tray 2.

By the suspension support 25 which is suspended and moved by the lateral movement means 33 in the gantry frame 13,
The turntable 3 in the grafting work unit 3 which will be described later on the rootstock A
4 to the holding portion 35. Gantry frame 1
In the middle of 3, a cotyledon sensor mechanism 36 as shown in FIG. 6 is provided. In the cotyledon sensor mechanism 36, a light projecting portion 36a is arranged at the lower end of a U-shaped frame 37, and a light receiving portion 36b is arranged at the upper end in a coaxial line shape. Therefore, when the suspension support 25 whose lateral movement is temporarily stopped is rotated in a certain direction, the position of one cotyledon of the rootstock A held by the left and right holding finger portions 27a and 27b under the suspension support body 25 is changed. Detected by the cotyledon sensor mechanism 36, the rotation of the suspension support 25 is temporarily stopped at that position. In the embodiment, the rotation direction of each suspension support 25 corresponding to the rootstock A is clockwise and the rotation direction of each suspension support 25 corresponding to the spike B is counterclockwise. As another embodiment, the suspension supporting members 25 corresponding to the rootstock A and the scion B may be rotated in opposite directions, or may be rotated in the same direction (turning).
You may let me.

A rotary encoder 38 provided at an appropriate position of the suspension support 25 rotates between an initial position (a state in which the tray 2 is pulled out directly above) until the cotyledon is detected by the cotyledon sensor mechanism 36. The motion angle θ is detected,
The data of the angle θ is stored in the readable / writable memory (RAM) of the control device (computer) 39 at any time.

Next, the suspension support 25 is rotated by a predetermined angle (90 degrees clockwise in the embodiment) from the position where the cotyledon sensor mechanism 36 detects the cotyledons, and then stopped, and the holding portion of the turntable 34 is held. Hug to 35. When the stem 35 of the rootstock A is held by the holding portion 35 of the turntable 34, the cotyledon expansion direction is directed toward the center of rotation of the turntable 34. If the development direction of the cotyledons is directed in the rotational tangential direction of the turntable 41, when the cut surfaces of the rootstock A and the scion B are fixed so as to face each other in the grafting work unit 3 described later, the rootstock is fixed. The cotyledon and the cotyledon of Hozuki do not overlap in a plan view (expand in a direction perpendicular to each other)
As a result, it is possible to have a good influence on the subsequent growth of the grafted seedling C.

The pair of left and right turntables 34, 41 in the grafting work unit 3 are intermittently turned in the direction of the arrow in FIG. 11 by a driving means such as a step motor (not shown). The holding portions 35 are arranged at appropriate intervals in the circumferential direction (in the embodiment, a central angle is 120 degrees).
To provide. As shown in FIGS. 8 to 11, the holding portion 35 is moved forward and backward in the rotation center direction by a fixed portion 35a whose inner surface faces the rotation tangential direction on the outer peripheral surfaces of the turntables 34 and 41, and an actuator 42 such as an electromagnetic solenoid. Moving part 35 that moves
b, and a member such as soft rubber that does not damage the stem to be held is attached to the inner surfaces of the fixed portion 35a and the moving portion 35b that face each other. The stem opening direction by the holding portion 35 is
As shown in FIG. 11, the direction is opposite to the supply side of the clip 50 described later.

Further, as shown in FIG. 8, the outside of the rotary table 34 on one side of the circumference is connected to a predetermined height position of the stem of the rootstock A held by the holding portion 35. A rootstock cutter mechanism 43 is provided to form the cut surface of the. Similarly, FIG.
As shown in FIG.
A scion cutter mechanism 44 is provided in order to form a cutting surface for joining at a predetermined height position of the stalk. Both cutter mechanism 4
Reference numerals 3 and 44 are for rotating the rotary blade 45 by a motor 46. The motor 46 is slidably mounted on a tilt table 47, and an actuator 48 is used to rotate the rotary blade 45.
Is a structure in which the motor 46 can be approached from the outside of the radii of the rotary bases 34, 41 toward the center, and reference numeral 49 is a guide for preventing escape of the stem b when cutting the stem of the spike b. It is a plate.

A portion where the circumferential edges of the pair of left and right rotary bases 34, 41 approach each other (the left and right central portions in FIG. 1) is the grafting work portion 3, and at this position, each is held by the holding portion 35. The stem of the rootstock A and the stem of the scion B are lined up on a substantially coaxial line,
The cut surfaces of both stems come into close contact. A supply unit 51 for supplying a clip 50 (having the same configuration as a clothespin) to this portion includes an actuator 53 such as an air cylinder having a manipulator 52 mounted at its tip, and a clip 50.
And a plurality of support columns 56 that are erected between the upper and lower circular plates 55, 55 of the storage section 54.
A large number of clips 50 are detachably attached in a fixed direction (see FIGS. 1, 10, and 11).

At the retracted position of the actuator 53, one clip 5 in the storage portion 51 is moved by the manipulator 52.
With the base end of No. 0 grasped and the tip of the clip 50 expanded as shown in FIG. 11, the graft working unit 3 is approached, and the joint between the stem of the rootstock A and the stem of the scion B is clipped by the clip 50. The manipulator 52 is opened so that the manipulator is clamped at and then retracted.

In the post-processing work section 9 shown in FIG. 1, a transfer mechanism 58 for grafted seedlings C is provided on a gantry frame 57 having a cross shape in plan view arranged above the discharge conveyor 10 so as to be movable in x and y directions. This transfer mechanism 58 has substantially the same structure as the holding mechanisms 7 and 8 described above, and as shown in FIG. 10, it has a rotatable frame 60 which is rotatable outside a U-shaped frame 59 in side view. The rotary frame 60 is provided with the rotary actuator 61.
Is rotated about the vertical axis through the pin 62, and the stem portion of the grafted seedling C is held by the pair of holding fingers 63 provided at the ends of the frame 59 and the rotating frame 60. . The transfer mechanism 58 can be moved up and down and rotated about the stem axis of the grafted seedling C by an operation actuator 64 attached to the upper end of the rotation actuator 61.

With this configuration, the grafted seedling C held by the transfer mechanism 58 is transferred to the tray 2 of the rootstock A by the holding mechanism 7.
After being extracted from the above, it is rotated in the opposite direction to the above by the same angle as the angle rotated by θ to restore the original transfer. As a result, the direction of the square root pot a in the grafted seedling C becomes the same as the direction of the square square of the empty pot portion 6 of the tray 2 placed on the discharge conveyor 10. In this state,
If the transfer mechanism 58 is moved in the x and y directions, the transfer mechanism 58 is lowered by the actuating actuator 64, and the transfer mechanism 58 is sequentially inserted into the empty bowl portion 6 of the tray 2 (FIG. 10).
See also), the soil and roots of the root pot a in the grafted seedling C are not broken, and the subsequent growth is not adversely affected.

When the vibrating device 65 is arranged on the lower surface side of the discharge conveyor 10 and the vibrating device 65 is operated after the grafting seedling C is returned to the tray 2, the bowl portion 6 of the tray 2 is operated.
Even if the root bowl a is inserted with a slight deviation from
The tray 2 can be returned to a stable state by vibration.
FIG. 13 shows the directions of the root pot a of the rootstock A and the scion B planted in the pot portion 6 of the tray 2 and the cotyledon development direction, the rotational movements of the holding mechanisms 7 and 8, the cotyledons of the rootstock A. Resection and transfer mechanism 58
FIG. 13 is a plan view illustrating respective relationships of a return operation (rotation operation) of the tray 2 to the bowl portion 6 by means of a plan view. A solid line arrow in FIG. 13 indicates a traveling direction of the tray 2, and a chain line arrow indicates rotation. Indicates the direction.

In FIG. 13 (a), the development directions of the cotyledons of the rootstock A and the scion B planted on the tray 2 are the supply conveyors 4,
5 is parallel to the traveling direction of the tray 2 and the root pot a
Shows a case where the direction of one side of the square in plan view is a direction perpendicular to the traveling direction (see the states at the left end and the right end of the figure),
In this state, when the holding mechanism 7 turns 90 degrees (θ) in the clockwise direction, the cotyledon sensor 36 detects the turning front end of one cotyledon of the rootstock A, and the holding mechanism 8 rotates counterclockwise. When the cotyledon sensor 36 rotates 90 degrees around, the cotyledon sensor 36 detects the front side end of one cotyledon of the spike B. This rotation angle θ
Data (only data on the base A side in the embodiment) is stored in the readable / writable memory (RAM) of the control device 39 at any time. Next, in the holding mechanism 7, the base A is turned clockwise by 90 degrees to be transferred and held by the holding portion 35 of the turntable 34. In the holding mechanism 8, the holding unit 35 of the turntable 41 is moved in parallel while being detected by the cotyledon sensor 36.
Let Hoki B hug.

Next, the turntable 34 is rotated clockwise and the turntable 4 is rotated.
One cotyledon (stem) is obliquely cut while rotating 1 in the counterclockwise direction in synchronization with each other, and at the grafting work unit 3, one cotyledon of the rootstock A and two cotyledons of the scion B are unfolded. Plan view 9
They are joined so as to cross each other at 0 degree, and grafted with a clip 50, and the grafted seedling C is rotated counterclockwise by 90 degrees (-θ) by the transfer mechanism 58, and the empty tray 2 in the discharge conveyor 10 is rotated. It is inserted into the pot portion (cell) 6 of the. In this case, the empty tray 2 in the discharge conveyor 10
The traveling direction of the tray 2 is the tray 2 by the supply conveyors 4 and 5.
The direction parallel to or perpendicular to the transport direction of. By doing so, the phase of the root pot a of the grafted seedling C in plan view (the direction of the square root pot a) and the phase of the pot part 6 of the tray 2 (the direction of the square pot part 6) match, so that it is smooth. Can be inserted into.

In FIG. 13 (b), the development direction of the cotyledons of the rootstock A and the scion B planted in the tray 2 is biased by 60 degrees clockwise with respect to the traveling direction of the tray 2 (the direction of the solid line arrow). The case is shown (however, the direction of one side of the square root pot a in a plan view is perpendicular to the traveling direction). Therefore, the holding mechanism 7 turns the rootstock A clockwise by 30 degrees (θ), and the holding mechanism 8 turns the scion B counterclockwise by 150 degrees. Thereafter, the holding portions 35 of the turntables 34, 41 are held, and the cotyledons of one of the rootstocks A, and the joining and fixing of the rootstock and the scion are carried out in the same manner as described above, and after the grafting work is completed, the transfer mechanism is carried out. When rotated counterclockwise by 58 by 30 degrees, as in the above, the phase of the root pot a of the grafted seedling C in plan view (the direction of the square root pot a) and the pot part 6 of the tray 2 on the discharge conveyor 10. Since the phase (the direction of the square bowl portion 6) of is matched, the insertion can be smoothly performed.

FIG. 13 (c) shows that the cotyledons of the rootstock A and the scion B planted in the tray 2 are deviated by 120 degrees clockwise with respect to the traveling direction of the tray 2 (the direction of the solid arrow). (However, the direction of one side of the square root pot a in a plan view is perpendicular to the traveling direction). In this case, the holding mechanism 7 moves the base A clockwise by 150 degrees (θ).
The holding mechanism 8 turns the bush B counterclockwise by 210 degrees.
Rotate once. Thereafter, the holding portions 35 of the turntables 34, 41 are held, and the cotyledons of one of the rootstocks A, and the joining and fixing of the rootstock and the scion are carried out in the same manner as described above, and after the grafting work is completed, the transfer mechanism is carried out. If you turn counterclockwise 150 degrees by 58,
Similar to the above, the plan view phase of the root pot a of the grafted seedling C (the direction of the square root pot a) and the tray 2 on the discharge conveyor 10
Since the phase of the bowl portion 6 (the direction of the square bowl portion 6) is the same, it can be smoothly inserted.

In the above embodiment, the bowl portion 6 of the tray 2 is used.
However, in the case of a rectangular shape in a plan view, a combination of the short side and the long side of the bowl section 6 extracted from the tray section 6 of the tray on the supply conveyor 4 side ( The turning angle by the transfer mechanism 58 (and / or the holding mechanism 7) may be set so that the root pot a) of the rootstock is returned to the pot portion 6 of the tray in the discharge conveyor 10. The turning angle is set in the same manner even when the shape of the bowl 6 in plan view is non-circular such as elliptical, hexagonal, or triangular. Further, even when the conveying direction of the tray 2 by the supply conveyor 4 and the conveying direction of the tray 2 by the discharging conveyor 10 are not parallel, the root potion a of the grafted seedling C fits perfectly in the pot portion 6 of the tray 2 on the discharging conveyor 10. like,
The turning angle of the holding mechanism 7 and / or the transfer mechanism 58 should be set.

The setting of the turning angles of the holding mechanisms 7 and 8 and the transfer mechanism 58, the timing of the movement of the rootstock and the scion, and the like are all controlled by the control device 39 incorporating the electronic equipment such as the computer. It is a thing. Further, the fixing means for the graft may be an instant adhesive that solidifies in a short time, instead of the holding means such as the clip 50.

[0031]

As described above, according to the grafting method of the present invention, the root and the scion are held by their respective holding mechanisms, and the tray has a non-circular shape in a plan view. The rootstock extracted from the part is rotated in a predetermined direction around the axis of the stem so that the phase of its cotyledons is constant, so that the direction of the cotyledons in the rootstock and the scion has a constant relationship, at least. Rotate the stem of the rootstock around its axis, and join and fix it at the cut surface of both stems of the rootstock and the scion.After the grafting work is completed, the grafted seedlings should be in the tray with the orientation of the root pot. Since it is controlled so as to be returned to the bowl portion of the tray by rotating it around the stem axis by an angle that matches the direction of the part,
By returning the grafted seedlings after the grafting work to the pots of the empty trays, they can be transported in a stable state without damaging a large number of grafted seedlings or damaging the root pots or stems, and can be used for the growth of grafted seedlings later. The effect is that there is no adverse effect.

In particular, when returning to the pot portion of the original tray, if the pot portion of the tray has a non-circular shape such as a rectangle or a hexagon, the shape of the root pot of the grafted seedling (the root of the original rootstock) By rotating the orientation of the shape of the pot (plan view) in the same direction as the pot portion of the tray and returning it to the original position properly, it is possible to minimize the occurrence of scratches on the root pot. Produce an effect.

[Brief description of drawings]

FIG. 1 is a schematic plan view of a graft graft production facility.

FIG. 2 is a schematic front view of the grafted seedling production facility taken along the line II-II in FIG.

FIG. 3 is a perspective view of a supply conveyor section.

FIG. 4 is an enlarged cross-sectional view of a main part taken along the line IV-IV of FIG.

FIG. 5 is a partially cutaway plan view taken along the line VV of FIG.

FIG. 6 is a side view of a main part of a holding mechanism.

FIG. 7 is a sectional view taken along the line VII-VII of FIG.

FIG. 8 is a side view of a main part of the cutter mechanism of the rootstock.

FIG. 9 is a side view of a main part of the scion cutter mechanism.

10 is an enlarged cross-sectional view of a main part taken along the line XX of FIG.

11 is a sectional view taken along the line XI-XI of FIG.

FIG. 12 is a view taken along line XII-XII in FIG.

FIG. 13A is an operation explanatory view showing a state in which the development direction of the cotyledons of the rootstock is parallel to the conveyance direction of the tray. (B) is an operation explanatory view showing a state in which the development direction of the cotyledon of the rootstock is deviated by 60 degrees clockwise with respect to the transport direction of the tray.
FIG. 7C is an operation explanatory view showing a state in which the development direction of the cotyledons of the rootstock is offset by 120 degrees clockwise with respect to the transport direction of the tray.

[Explanation of symbols]

 A Rootstock a Root pot B Spoon 1 Grafting seedling production facility 2 Tray 3 Grafting work part 4,5 Supply conveyor 6 Pot part 7,8 Holding mechanism 10 Discharge conveyor 34,41 Rotation table 36 Cotyledon sensor 38 Rotary encoder 39 Control Device 50 Clip 58 Transfer mechanism

Front page continuation (72) Inventor Seto Takeno 1-32 Chayamachi Kita-ku, Osaka City Yanmar Agricultural Machinery Co., Ltd. (72) Inventor Haruo Koga 1-32 Chayamachi Kita-ku, Osaka City Yanmar Agricultural Machinery Co., Ltd. (72 ) Inventor Akira Takemura 1-32 Chayamachi, Kita-ku, Osaka, Yanmar Agricultural Machinery Co., Ltd. (72) Inventor Kiyotaka Yoshida 1-32 Chayamachi, Kita-ku, Osaka Yanmar Agricultural Machinery Co., Ltd. (72) Inventor, Makoto Kamiyama Hyogo 5-3-1 Tsukaguchi Honcho, Amagasaki City, Akira within Wako Seiki Industry Co., Ltd. (72) Inventor Yoshinori Abe 5-3-1, Tsukaguchi Honcho, Amagasaki City, Hyogo Within Sawawa Seiki Co., Ltd.

Claims (1)

[Claims] 1. The roots of a rootstock and a scion, which have their stems held by different holding mechanisms, and which are pulled out from a non-circular pot shape pot in the tray, have a constant cotyledon phase. Rotate the stem about its axis so that the cotyledons in the rootstock and the scion are in a certain relationship so that the rootstock and the spike are rotated. After the grafting work of joining and fixing at the cut surface of both stems with the tree is completed, the grafted seedling is rotated around the stem axis by an angle such that the direction of the root pot matches the direction of the pot part in the tray. A method for producing grafted seedlings, characterized in that the control is performed so as to return to the pot portion of the tray.