JP3031778B2 - Method for producing grafted seedling and sleeve for grafting - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a grafted seedling producing method and the method odor producing grafted seedling efficiently and with labor saving
The present invention relates to a grafting sleeve that can be used .

[0002]

2. Description of the Related Art Japanese Unexamined Utility Model Publication No. Hei 2-138529 discloses a technique in which a stock having an oblique cut surface is joined to a stock having an oblique cut surface, and a sleeve having an axial cut is attached to the joint and fixed. A grafting fixture is disclosed.

[0003]

However, in the conventional grafting of seedlings, diagonal cutting of rootstocks and scions and mounting of fixing sleeves are performed manually for each seedling. Yes,
It required a lot of manpower and work time. In recent years, sowing seedlings, some mechanization of seedling raising work has been promoted,
At the same time, there is a demand for mechanization of grafting of seedlings.

An object of the present invention, the oblique cutting of seedlings, grafted seedling production process was mechanized mounting of the rootstock of the fixing sleeve Oyo
And a sleeve for grafting .

[0005]

According to the present invention, the above object is achieved by the following method for producing a grafted seedling and a grafting sleeve . That is, (1) a tray having a nursery bed arranged in a lattice is placed horizontally, sowed at the center of each nursery bed, and after the seedlings have grown, the tray is raised vertically to be the same as the uppermost row of the nursery pitch. The top row of seedlings is guided by a seedling centering jig having a pitch guide groove to center the top row of seedlings, and the rotating blade tilted from the vertical direction is moved horizontally at the top row of seedling positions. One row of seedlings in the top row is cut diagonally to the seedling axis, and the tray is raised, the seedlings are centered, and the seedlings are cut diagonally from the top row to the bottom row. After the completion of cutting the seedlings, the tray is lifted up, and the rootstock consisting of the top row of cut seedlings is guided by the seedling centering jig to center the rootstock in the top row. Holds at the same pitch as the guide groove of the centering jig and with the sleeve cut open Move the sleeve mounting device toward the top row of stock, release each cut in the sleeve after inserting each stock into each sleeve, attach the sleeve to the stock, and attach the sleeve to the stock. Mounting on each row from the second row to the bottom row from the top from the top. (2) With a cut extending over the entire length in the axial direction
A cylindrical portion, and a circumferential portion of the cylindrical portion facing the cut.
Extend from the ends parallel to each other to the outside of the cylindrical part
And a pair of tongue pieces, and is formed entirely of an elastic body.
A grafting sleeve, characterized in that

[0006]

[Action] In order to facilitate the mechanization of grafting work, the seedling pitch is made constant. For this purpose, the seedlings are sown in the center of the nursery bed and the seedlings are guided by the guide grooves of the seedling centering jig. When cutting the seedlings, each seedling is held in each guide groove of the seedling centering jig so that the seedling does not escape from the blade when the blade hits the seedling. Since the rotating blade is used, the seedling can be cut without substantially deforming the seedling. In addition, since the rotary blade is inclined from the vertical plane, the cutting surface of the seedling is inclined with respect to the seedling axis.

When mounting the sleeve, each rootstock is held by each guide groove of the seedling centering jig so that the rootstock does not escape from the sleeve when the sleeve comes into contact with the rootstock. Since the rootstock pitch is set by the seedling centering jig, it becomes easy to mount a large number of sleeves held by the sleeve mounting device on the rootstock at the same pitch. The sleeve is pre-expanded at the stage where it is held by the sleeve mounting device, and it is only necessary to approach the stock and put the stock through the cut in the sleeve and into the sleeve, then simply release the expansion of the sleeve. , Can be attached to the stock of the sleeve. The efficiency of such a sleeve mounting operation is improved as compared with the operation of mounting the sleeve directly on each stock by hand.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A method for producing a grafted seedling according to one embodiment of the present invention and a grafting sleeve used in the method will be described below with reference to the drawings. FIG. 1 shows a tray 4 having seedbeds 2 arranged in a grid. A seeding device as shown in FIG. 2 is used to sow the seedbeds 2 at the center of each seedbed 2 accurately.

In FIG. 2, reference numeral 6 denotes a seed suction disk having the same number of seed suction holes as the seedbed, and has a reversible structure.
By vibrating the seed suction disk 6 with the vibrator 8, the seeds 12 are scattered from the seed reservoir 10 onto the surface of the suction disk, and the seeds 12 are sucked into the various child suction holes.

Subsequently, the seed suction disk 6 is turned over. The seeds not adsorbed are returned to the seed reservoir 10 at the time of reversal.
Subsequently, the negative pressure of the seed suction board 6 is released. The seeds 12 that have been adsorbed in the seed adsorption holes until then fall under their own weight.

The falling seeds 12 are guided by a flexible seed guiding hose 14, guided below the seed adsorber 6 and above each nursery bed 2 of the tray 4 set horizontally, and sowed at the center of the nursery bed 2. Is done. At the lower end of the hose 14, there is provided a seed scattering prevention sleeve 16 which can be moved up and down. However, even if the seeds are replanted on the cultivation soil 18, the seeds are not displaced from the center of the nursery 2. In this case, if a hollow is formed in the center of the cultivation soil 18 by using Dupra or the like, the seed is sown more accurately in the center of the nursery.

After sowing, the seedlings are laid on a nursery. It germinates in a few days and grows as a seedling. The seedlings are used as rootstocks, and the scions selected therefor are grafted and shipped as grafted seedlings. The joint surface between the rootstock and the scion shall be a slope inclined to the seedling axis,
The joint is a grafting sleeve (hereinafter simply referred to as a sleeve).
U) . The oblique cutting of the seedling and the attachment of the sleeve to the stock are also performed by a mechanized method as follows.

As shown in FIG. 3, the tray 4 is mounted on the tray lifter 20 in a vertical position. In this position, the seedlings 22 extend horizontally from the nursery bed 2. Trail lifter 20
A seedling centering jig 24 is disposed above the table. The seedling centering jig 24 has a large number of guide grooves 26 at the same pitch as the seedbed pitch, and the guide grooves 26 are formed of, for example, V-shaped grooves that open downward.

The tray 4 is moved upward by the tray lifter 20, and when the seedlings 22 in the uppermost row enter the guide grooves 26, the lifting of the tray 4 by the tray lifter 20 is stopped. In this state, the seedlings 22 in the uppermost row are held by the guide grooves 26 and are centered in an arrangement at a constant pitch.

Subsequently, the rotary blade 28 located on the side of the uppermost row of seedlings is moved in the longitudinal direction of the seedling centering jig 24 to move the uppermost row of seedlings from one end of the row to the other end. , In order,
Cutting off.

The rotary blade 28 is inclined from the vertical plane, so that the cut surface of the seedling becomes a slope inclined with respect to the seedling axis. The portion of the seedlings remaining on the tray side after cutting is a portion that becomes a rootstock for grafting. When the cut and fallen seedling portion is used as a scion of another rootstock, it is collected by a suction device (not shown).

When the cutting of the uppermost row of seedlings is completed in this way, the rotary blade 28 is returned to its original position. Subsequently, the tray lifter 20 is driven to raise the tray 4, and when the second row of seedlings is guided by the guide groove 26 of the seedling centering jig 24, the lifting of the tray 4 by the tray lifter 20 is stopped. The rotary blade 28 is moved again to cut the second row of seedlings. Such cutting of the seedlings is repeated to the bottom row, and all the seedlings 22 of one tray 4 are cut.

Next, the sleeve is mounted on the stock as shown in FIG. First, the tray 4 is raised, and the tray 4 is raised by the tray lifter 20. When the rootstock 30 in the uppermost row enters the guide groove 26 of the seedling centering jig 24, the tray lifter 20 is stopped and the tray 4 is raised. To stop. At this time, the stock 30 is centered at a predetermined pitch by the guide groove 26.

In the sleeve mounting device 32, the same number of sleeves 34 as the stock for one row are mounted at the same pitch as the pitch of the guide grooves 26 in advance. The sleeve 34, as shown in FIG. 5, a cylindrical portion which have a cut 36 which extends over the entire length in the sleeve longitudinal direction, a cylindrical facing slit 36
To the outside of the cylindrical part parallel to each other from both circumferential ends of the cylindrical part
It has a pair of tongues extending toward
It is formed from the body . The sleeve 34 is supported by the sleeve mounting device 32 in a state where the cut 36 is expanded by pressing a cut opener 38 into the cut 36.

Next, the sleeve mounting device 32 is moved toward the rootstock 30 in the axial direction of the rootstock 30 at the same level as the rootstock 30 guided by the seedling centering jig 24. Thereby, the stocks 30 in the uppermost row enter the corresponding sleeves 34 in the axial direction. Then, a break spreader 3
8 is removed from the cut 36 to release the spread of the cut. The sleeve 34 is elastically deformed in a direction to close the cut 36 and is attached to the stock 30. Sleeve 3 of sleeve mounting device 32
4 The holding is also released, and the sleeve mounting device 32 is moved in the direction of the rootstock to return to the original position.

Subsequently, the sleeve is mounted on the stock from the second row to the bottom row from the top by the same operation.

Next, the operation will be described. When cutting the seedlings 22 and attaching the sleeve 34 to the rootstock 30, the seedlings and rootstock are held in the guide grooves 26.
The 0 is centered at the correct position, and does not escape even if a slight force is applied, and maintains the correct position.

For this reason, even if the rotary blade 28 hits the seedling 22, the seedling 22 does not escape, and it is possible to cut the seedling accurately and smoothly. In addition, even if the sleeve 34 hits, the stock 30 does not escape, and the sleeve can be mounted accurately.

The guide groove 2 of the seedling 22 and the stock 30 as described above
In order to be able to be guided to 6, the seedlings 22 need not be largely displaced from the predetermined position of the lattice, and by sowing at the center of the seedbed using a sowing device as shown in FIG. It is possible.

Further, since the cutting of the seedlings 22 is performed only by tilting and moving the rotary blade 28, the seedlings can be cut at a constant inclination. The quality of grafting is improved.

[0026]

According to the first aspect of the present invention, the seedling is held in the guide groove of the seedling centering jig, cut diagonally by the rotary blade, and the stock is held in the guide groove and the sleeve is mounted. The oblique cutting of the seedling and the attachment of the sleeve to the stock can be smoothly mechanized, and the working efficiency can be improved. According to the invention of claim 2, the sleeve is cut off.
Because it has a cylindrical part with eyes and a pair of tongues, it has a sleeve
Can be easily expanded and reduced in diameter.

[Brief description of the drawings]

FIG. 1 is a perspective view of a tray having a nursery.

FIG. 2 is a sectional view of a seeding device.

FIG. 3 is a perspective view of an oblique cutting device for seedlings.

FIG. 4 is a perspective view of an apparatus for attaching a sleeve to a stock.

FIG. 5 is a perspective view of a sleeve.

[Explanation of symbols]

 2 Nursery bed 4 Tray 6 Seed sucker 8 Vibrator 12 Seed 16 Seed scattering prevention sleeve 20 Tray lifter 22 Seedling 24 Seedling centering jig 26 Guide groove 28 Rotating blade 30 Rootstock 32 Sleeve mounting device 34 Sleeve 36 Cut 38 Break opening tool

Claims (2)

(57) [Claims] 1. A tray having a nursery bed arranged in a lattice is placed horizontally and sowed at the center of each nursery bed. After the seedlings have grown, the tray is raised vertically and the same as the uppermost row nursery pitch. The uppermost row of seedlings is guided by a seedling centering jig having a pitch guide groove to center the uppermost row of seedlings, and the rotary blade tilted from the vertical direction is moved horizontally at the uppermost row of seedling positions. One row of seedlings in the top row is cut diagonally with respect to the seedling axis, and the tray is raised, the seedlings are centered, and the seedlings are cut diagonally from the top row to the bottom row. After the cutting of the seedlings is completed, the tray is raised, and the rootstock consisting of the cutting seeds in the uppermost row is guided by the seedling centering jig to center the rootstock in the uppermost row. Holds at the same pitch as the guide groove of the centering jig and with the sleeve cut open Move the leave mounting device toward the rootstock of the top row.After inserting each rootstock into each sleeve, release the slit opening of the sleeve, attach the sleeve to the rootstock, and move to the rootstock of the sleeve. The method for producing a grafted seedling according to claim 1, wherein the mounting is performed on each row from the second row to the bottom row from the top. 2. A cut extending over the entire length in the axial direction.
A cylindrical portion having From both ends in the circumferential direction of the cylindrical portion facing the cut,
A pair of tongues extending parallel to the outside of the cylindrical portion, Characterized in that the whole is formed from an elastic body
Sleeve for grafting.