JP2014132840A - Joining tool for grafting and nursery tree grafted by using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a joining tool for grafting, which can securely hold a joining part of a rootstock and a scion while effectively preventing the grafting part from being infected by a pathogenic bacteria and the peripheral surface of the grafted nursery tree from forming a knob-shaped projection, and to provide a nursery tree grafted by the joining tool for grafting.SOLUTION: In the present invention, it is configured that: the tool comprises a thin-walled cylindrical tube, whose one side face is cut out, in an unjoined state, in a longitudinal direction, to have 6-like shaped cross-sectional shape; slits S and S is formed at the intermediate part in the longitudinal direction of the tube, by making cuts in a circumferential direction; a rootstock holding part 10 comes into closely contact with an outer peripheral surface of a root stock, with both side edge parts 1A and 1B of its circumferential direction overlapping each other in a radial direction, by elastic restitutive force of diameter expansion; and a scion holding part 11 comes into closely contact with an outer peripheral surface of a scion, with both side edge parts 1A and 1B of its circumferential direction overlapping each other in the radial direction, by elastic restitutive force of diameter expansion.

Description

  TECHNICAL FIELD The present invention relates to a grafting joint used when grafting rootstocks and hogis having different thicknesses and a seedling grafted using the jointing joint.

  As a conventional technique, for example, in Patent Document 1, a clip for grafting in which a slit substantially perpendicular to the length direction is formed in a clip portion having a slit in the length direction and the clip portion is divided into a plurality of pieces in the length direction. Is described. In the technique described in Patent Document 1, when a rootstock and a hogi having different thicknesses are grafted by forming a slit, the rootstock and the hogi are sandwiched separately to try to securely hold the joint portion. To do.

  Further, for example, Patent Document 2 has a portion cut from one end side to the other end side in the longitudinal direction, and holds the graft in a state where the opposite edges of the cut portion overlap each other. A graft graft holder configured as described above is described. The technique described in Patent Document 2 holds the grafted portion in a state where the opposing edge portions are overlapped, thereby holding the grafted portion in an unexposed state so that pathogens are difficult to enter. Further, for example, Patent Document 3 describes a technique for forming a joint for a graft in a spiral shape in a plan view and preventing the formation of knob-like projections on the peripheral surface of the grafted seedling due to the presence of a gap. Yes.

JP-A-8-66122 (see paragraph “0009”, FIG. 10 and FIG. 7) Japanese Utility Model Laid-Open No. 5-91280 (see paragraph “0004”, paragraph “0007”, FIG. 1 and FIG. 3) JP 2008-154484 A (see paragraph “0057”, FIG. 4 and FIG. 5)

  In the technique described in Patent Document 1 described above, a crack is formed in the length direction of the clip portion, and since the rootstock and the scrub of the portion of the crack are exposed in the grafted state, the pathogen is introduced. It was not possible to prevent this, and it was not possible to prevent the formation of knob-like projections on the peripheral surface of the grafted seedling.

  In addition, in the techniques described in Patent Documents 2 and 3, the grafted portion can be held without being exposed, but on the other hand, when a rootstock and a hogi having different thicknesses are grafted, the thinner one is thinner. A gap was formed between the outer peripheral surface of the rootstock or the hogi and the inner peripheral surface of the graft holder, and it was difficult to reliably hold the joining portion of the rootstock and the hogi.

  The object of the present invention is to reliably hold the joint between the rootstock and the saf while effectively preventing the entry of pathogenic bacteria into the grafted portion and the formation of a bump-like protrusion on the peripheral surface of the grafted seedling. It is to provide a grafting joint and a seedling grafted using the jointing joint.

  1st invention is the joint tool for grafting used when grafting the rootstock and Hogi different in thickness, and one side is long in the non-joining state which has not joined the rootstock and Hogi It consists of a thin cylindrical tube with a “6” -shaped cross-section that is cut open in the direction. A slit cut in the circumferential direction is formed in the middle of the tube in the longitudinal direction to expand from the non-bonded state. In the joined state in which the rootstock and the hogi are joined in diameter, the rootstock holding part that holds the rootstock on one end side in the longitudinal direction with respect to the slit is overlapped in the radial direction at both end edges in the circumferential direction. In this state, the end portion of the circumferential direction has a diameter of the end of the end of the end of the end of the end of the end of the end, where the end of the end of the end is in close contact with the outer peripheral surface of the rootstock by elastic restoring force due to diameter expansion. In the state of overlapping in the direction, elastic resilience due to diameter expansion on the outer surface of the hogi It is arranged to wear.

  According to the above configuration, in the joined state in which the rootstock and the hogi are joined, the elastic restoring force due to the diameter expansion is exposed without exposing the longitudinally cut portion of the side face of the rootstock holding portion and the hogi holding portion. Thus, grafting can be performed in a state where the inner peripheral surfaces of the rootstock holding portion and the hogi holding portion are in close contact with the outer peripheral surfaces of the rootstock and the hogi. This makes it possible to effectively prevent the entry of pathogens into the grafted part and the formation of knob-like projections on the peripheral surface of the grafted seedling with a simple structure that only forms a predetermined slit in the thin-walled cylindrical tube. However, it is possible to reliably hold the joint between the rootstock and Hogi.

  According to a second aspect of the present invention, in the grafting joint according to the first aspect of the present invention, a slit cut in the circumferential direction from an edge on one end side in the circumferential direction in the longitudinal direction intermediate portion of the tube, and its circumference A slit cut in the circumferential direction from the edge portion on the other end side in the direction and a connecting portion for connecting the rootstock holding portion and the hogi holding portion are formed between the two slits.

  According to the above configuration, it becomes possible to effectively act the elastic restoring force of both end edge portions due to the diameter expansion from the direction orthogonal or substantially orthogonal to the connecting portion, and the joining portion of the rootstock and the hogi can be more reliably secured. Can be held in.

  According to a third aspect of the present invention, in the graft joint according to the second aspect, the sum of the lengths of the two slits formed at the end edge portions on the one end side and the other end side is the circumferential length of the connecting portion. The length of the connecting portion is longer than the length of the slit formed in the end edge portion on the one end side and the length of the slit formed in the end edge portion on the other end side. The slit length is set so as to be longer.

  According to the above configuration, the connection strength between the rootstock and the hogi when grafted is secured at the connecting portion, and the connecting portion is prevented from being deformed or broken due to the weight of the hogi, etc. It is possible to flexibly cope with differences in the thickness of rootstock and hogi by securing the length of the as long as possible.

  4th invention is the joining for grafts which consists of a thin-walled cylindrical tube which has the cross-sectional shape of "6" shape by which one side was cut open in the longitudinal direction in the non-joining state which has not joined the rootstock and Hogi A saplings obtained by grafting rootstocks and hogis having different thicknesses using a tool, wherein the joint for the graft is formed with a slit cut in the middle in the longitudinal direction thereof, The rootstock holding part that holds the rootstock on one end in the longitudinal direction with respect to the slit is in a state where both end edges in the circumferential direction overlap in the radial direction by the elastic restoring force due to the diameter expansion when grafting the rootstock. Diameter expansion when grafting in the state where both ends of the circumferential direction are overlapped in the radial direction, the edge holding portion that holds the spike on the other end in the longitudinal direction with respect to the slit in close contact with the outer peripheral surface It is in close contact with the outer surface of Hogi due to the elastic restoring force.

  According to the above configuration, in the joined state in which the rootstock and the hogi are joined, the elastic restoring force due to the diameter expansion is exposed without exposing the longitudinally cut portion of the side face of the rootstock holding portion and the hogi holding portion. Thus, grafting can be performed in a state where the inner peripheral surfaces of the rootstock holding portion and the hogi holding portion are in close contact with the outer peripheral surfaces of the rootstock and the hogi. This makes it possible to effectively prevent the entry of pathogens into the grafted part and the formation of knob-like projections on the peripheral surface of the grafted seedling with a simple structure that only forms a predetermined slit in the thin-walled cylindrical tube. However, it is possible to reliably hold the joint between the rootstock and Hogi.

It is detail drawing which shows the structure of the joint tool for grafts concerning this invention. It is explanatory drawing explaining the grafting method using the joint tool for grafting. It is sectional drawing which shows the state of the seedling grafted using the joining tool for grafts. It is detail drawing which shows the joint tool for grafts in another embodiment.

[Structure of joints for grafts]
Based on FIG. 1, the structure of the joint tool 1 for a graft according to the present invention will be described. FIG. 1 is a detailed view illustrating the structure of the grafting joint 1 in a non-joined state in which the rootstock 2 and the hogi 3 are not joined. FIG. 1A is a plan view of the jointing joint 1. FIG. 1 (b) is a side view of the grafting joint 1 and FIG. 1 (c) is a cross-sectional view of the grafting joint 1 at the position of the slit S. FIG. ) Is a development view of the jointing tool 1 for a graft as seen from the outer surface side.

  As shown in FIGS. 1 (a) and 1 (b), the grafting connector 1 has a "6" shape ("No" shape, spiral shape, σ, one side surface of which is cut open over the entire length in the longitudinal direction. It is comprised by the thin-walled cylindrical tube which has a cross-sectional shape of character shape and (rho) shape. That is, the grafting connector 1 is formed so that the end edge portion 1A on one end side in the circumferential direction overlaps the radially outer side of the end edge portion 1B on the other end side in a non-joined state. In the non-joined state, the length La of the overlapping portion where the end edge portion 1A on one end side overlaps the outside of the end edge portion 1B on the other end side is 3 minutes of the total circumferential length L of the jointing tool 1 for grafting including the overlapping portion. 1 or approximately one third (see FIG. 1 (d)).

  The jointing tool 1 for a graft is formed in a thin cylindrical shape whose inner diameter d is twice or more the plate thickness t of the plate-like material constituting the joining tool. Specifically, in the jointing tool 1 for a graft, the plate thickness t of the plate-like material is set to a dimension (for example, 0.6 mm) within the range of 0.4 to 0.8 mm, and the inner diameter d is the plate thickness t. It is set to 1.7 mm so as to be twice or more. The inner diameter d of the grafting connector 1 is set to be smaller than the outer diameters of the rootstock 2 and the hogi 3 to be grafted. As a result, in the joined state in which the rootstock 2 and the hogi 3 are joined, the rootstock holding portion 10 is in a state where both circumferential edges 1A and 1B are overlapped in the radial direction, and the elastic restoring force due to the diameter expansion. Is closely attached to the outer peripheral surface of the rootstock 2, and the hogi holding portion 11 is in an outer circumferential surface of the hogi 3 by elastic restoring force due to diameter expansion in a state where both circumferential edges 1 </ b> A and 1 </ b> B overlap in the radial direction. Close contact with. In this case, as described above, the length La of the overlapped portion of the grafting connector 1 is set to one third or substantially one third of the entire circumferential length L. Even when the outer diameters of the rootstock 2 and the hogi 3 are different within a predetermined range, any one of the predetermined ranges can be used by using the same jointing connector 1 without using a plurality of types of connectors. It becomes possible to graft the rootstock 2 and the hogi 3 of the outer diameter. For example, when the inner diameter d of the grafting joint 1 and the length La of the overlapping portion are set as described above, 1.9 while securing the overlapping portions of the rootstock holding portion 10 and the hogi holding portion 11. It is possible to graft the rootstock 2 and the hogi 3 having an arbitrary outer diameter within a range of ˜2.3 mm. The numerical values described above are shown as an example, and the inner diameter d and the plate thickness t of the grafting joint 1 are relative to the outer diameters of the rootstock 2 and the hogi 3 to be grafted. It can be set appropriately. Further, the thickness t of the jointing tool 1 for the graft may be set to a dimension of 0.8 mm or more (for example, 0.9 mm, 1.0 mm) when a soft material is selected as the material.

  As shown in FIG. 1 (a), the grafting tool 1 in a non-joined state is such that the end of the end edge 1B on the other end contacts the inner peripheral surface of the end edge 1A on one end, The cross-sectional shape is set such that a predetermined gap K is formed between the side edge 1A and the other edge 1B. That is, the inner peripheral surfaces of the end edge portion 1A on the one end side and the end edge portion 1B on the other end side are easily in close contact with the rootstock 2 and the hogi 3 when grafted, that is, these inner peripheral surfaces are A predetermined gap K is formed between the end edge portion 1A on one end side and the end edge portion 1B on the other end side so as to form an arc surface having a relatively large radius of curvature. The predetermined gap K is formed such that the gap gradually increases from the tip of the end edge 1B on the other end side toward the tip of the end edge 1A on the one end side.

  In the grafting tool 1, a slit S cut in the circumferential direction is formed at an intermediate portion in the longitudinal direction. The grafting tool 1 includes a rootstock holding unit 10 that holds a rootstock 2 at a lower portion on one end side in the longitudinal direction with respect to the slit S, and a hotwood 3 at an upper portion that is the other end side in the longitudinal direction with respect to the slit S. The rootstock holding part 10 and the hotwood holding part 11 are connected by a connecting part 12 between the two slits S and S. .

  The rootstock holding unit 10 and the hogi holding unit 11 are formed with a pair of operation units 13 and 13 that serve as knobs when grafting. The pair of operation units 13, 13 are arranged radially from the outer surface of the rootstock holding unit 10 and the hogi holding unit 11 to the intermediate part in the longitudinal direction of the rootstock holding unit 10 and the intermediate part in the longitudinal direction of the hogi holding unit 11. Are integrally formed so as to protrude. When expanding the diameter of the rootstock holding unit 10 and the hogi holding unit 11 when grafting, the pair of operation units 13 and 13 are, for example, thumb and index finger so that the pair of operation units 13 and 13 approach each other. By picking, the inner diameter of the rootstock holding part 10 and the hogi holding part 11 can be easily expanded even if the hand is not very dexterous, and the rootstock 2 and the hogi 3 are moved to the rootstock holding part 10 and the ear. It can be easily inserted into the tree holding part 11. In addition, a pair of operation part 13 and 13 is not restricted to what protruded radially as shown to Fig.1 (a), A pair of operation part 13 and 13 from the outer surface of the rootstock holding | maintenance part 10 and the hogi holding | maintenance part 11 is shown. They may be of different shapes and structures, such as those protruding so as to be parallel. Moreover, if it is a structure which can expand the diameter of the rootstock holding | maintenance part 10 or the hogi holding part 11, the operation part 13 is provided only in the edge part 1A of the one end side of the joint tool 1 for grafting, for example, and the hogi holding part 11 In order to increase the diameter, the root holding part 10 is picked up with one finger, the operation part 13 of the panicle holding part 11 is picked up with the finger of the opposite hand, and the diameter is increased. When doing so, you may comprise so that the hogi holding | maintenance part 11 may be picked with the finger of one hand, and the operation part 13 of the rootstock holding | maintenance part 10 may be picked with the finger of the reverse hand, and diameter-expanded.

  On the inner peripheral surface of the lower end portion of the rootstock holding portion 10, an inclined portion 14 that is inclined so as to be positioned radially outward is formed on the lower end side over the entire periphery. Similarly, although not shown, an inclined portion is formed on the inner peripheral surface of the upper end portion of the hogi holding portion 11 so as to be inclined radially outwardly toward the upper end side over the entire circumference. The inclined portion 14 of the rootstock holding unit 10 is for facilitating insertion of the rootstock 2 into the rootstock holding portion 10, and the inclined portion of the hotwood holding portion 11 is This is to facilitate insertion of the hotwood 3. The inclined parts of the rootstock holding part 10 and the hogi holding part 11 are not limited to those in which the inner peripheral surface is tapered as shown in FIG. The shape of the upper end part of the holding part 11 may be formed in a trumpet shape.

  As shown in FIGS. 1C and 1D, the slit S is cut in a direction perpendicular to the longitudinal direction from the edge 1 </ b> A on the one end side and the edge 1 </ b> B on the other end of the grafting tool 1. It is rare. The slit S shown in FIG. 1 (d) is formed of a slit having a predetermined width in the longitudinal direction of the grafting connector 1, but has a predetermined width that is simply cut by a cutter such as a cutter. It may not be. When the slit S having a predetermined width is adopted, the rootstock holding unit 10 and the hotwood holding unit 11 are difficult to contact each other at the slit forming portion, so that the grafting work can be performed smoothly.

  The lengths of the slits S, S are such that the connecting part 12 connecting the rootstock holding part 10 and the hotwood holding part 11 is secured between the slits S, S. The sum of the lengths of S (L1 + L2) is set to be a length that is one-half to one-half of the entire circumferential length L of the grafting connector 1 including the overlapping portion. The circumferential length L3 of the connecting portion 12 is set to be longer than the length L1 of the one slit S and longer than the length L2 of the other slit S. That is, the circumferential length L3 of the connecting portion 12 is set to be shorter than the sum of the lengths of the two slits S, S (L1 + L2), but if it is too short, the strength of the connecting portion 12 is secured. Since it is difficult, the length is set to be longer than the lengths L1 and L2 of the two slits S and S. Thereby, while securing the connection strength between the rootstock 2 and the hogi 3 when grafted by the connecting portion 12 and avoiding the connecting portion 12 being deformed or broken due to the weight of the hogi 3, The lengths of the slits S, S can be secured as long as possible so that the thickness of the rootstock 2 and the hogi 3 can be flexibly dealt with. Note that the slits S and S shown in FIG. 1 (d) have a length L1 of the slit S formed in the end edge 1A on one end side and a length of the slit S formed in the end edge 1B on the other end side. The length L1 of the slit S formed in the end edge 1A on one end side is longer than the length L2 of the slit S formed in the end edge 1B on the other end side. The slits S and S may be formed to have the same length.

  As a material of the jointing tool 1 for grafting, thermoplastic synthetic resins such as vinyl acetate, polyethylene, polypropylene, polystyrene, ABS resin, polyamide, polycarbonate, polyacetal, PTFE, polylactic acid, and thermosetting resins such as phenol resin and epoxy resin. A synthetic resin can be used. The material of the jointing tool 1 for grafting is preferably a relatively soft material that is difficult to damage the rootstock 2 and the hogi 3 during grafting and that can ensure an appropriate elastic restoring force. In this case, by using a transparent or translucent resin, it becomes easy to confirm the state of the graft from the outside when grafting, and the positioning of the rootstock 2 and the panicle 3 with respect to the jointing joint 1 for the grafting, or the rootstock 2 The alignment of the hogi 3 with respect to can be easily performed with high accuracy.

[Grafting method using grafting joint]
A grafting method using the grafting joint 1 will be described with reference to FIG. FIG. 2 exemplifies the grafting method in the case where the operator grafts using the grafting joint 1 in the order of (a), (b), and (c). In addition, in FIG. 2, although the case where it grafts by the diagonal joint used as a diagonal cut surface is illustrated, it is grafted by any method, such as a V-shaped joint used as a V-shaped cut surface, and a flat joint used as a horizontal cut surface. Also good.

  As shown in FIG. 2 (a), the operator picks the pair of operation units 13 and 13 of the rootstock holding unit 10 by hand to increase the diameter of the rootstock holding unit 10 and thereby remove the rootstock holding unit 10 from the rootstock. It inserts into 2 inclination part 2A from the upper side. In this case, since the slit S is formed in the jointing tool 1 for the graft and the edges of the rootstock holding part 10 and the hotwood holding part 11 are partially cut off, the diameter of the rootstock holding part 10 is increased. The hotwood holding part 11 does not expand or hardly expands in diameter. Therefore, as shown in FIG. 2 (b), when the operator inserts the rootstock holding part 10 into the inclined part 2 </ b> A of the rootstock 2 from above, the hotwood holding part 11 is placed on the upper end 2 </ b> B of the inclined part 2 </ b> A of the rootstock 2. The lower end of the slit forming portion abuts, and the joining tool 1 for grafting can be positioned with respect to the rootstock 2 simply by inserting the rootstock holding part 10 into the inclined part 2A of the rootstock 2 from above. In the example shown in FIG. 2, the rootstock holding portion 10 is inserted into the rootstock 2 so that the upper end 2B of the sloped portion 2A of the rootstock 2 is located on the slit S side. The rootstock holding part 10 may be inserted into the rootstock 2 so that the upper end 2B of the part 2A is located at a different position in the circumferential direction. For example, when the rootstock holding part 10 is inserted into the rootstock 2 so that the upper end 2B of the sloped part 2A of the rootstock 2 is located on the connecting part 12 side, the upper end part of the inclined part 2A of the rootstock 2 is The contact portion 12 is positioned in contact with the inner peripheral surface of the upper and lower intermediate portions of the connecting portion 12.

  Next, as shown in FIG. 2 (b), the operator releases his / her hands from the pair of operation units 13, 13 of the rootstock holding unit 10 to cause the elastic restoring force of the rootstock holding unit 10 to act. After holding the rootstock 2 in the holding part 10, the pair of operation parts 13, 13 of the hotwood holding part 11 is picked by hand, the diameter of the hotwood holding part 11 is expanded, and the inclined part 3 </ b> A of the hotwood 3 is spiked. It inserts into the tree holding part 11 from the upper side. When the operator pushes the inclined portion 3A of the hogi 3 into the hogi holding portion 11 from above, the cut surface of the inclined portion 3A of the hogi 3 comes into contact with the cut surface of the inclined portion 2A of the rootstock 2, and the stand The inclined portion 3A of the hogi 3 is positioned with respect to the inclined portion 2A of the tree 2.

  And as shown in FIG.2 (c), when an operator removes a hand from a pair of operation parts 13 and 13 of the hogi holding part 11, and acts the elastic restoring force of the hogi holding part 11, it will hold hogi By the elastic restoring force of the portion 11, the inclined portion 3 </ b> A of the hotwood 3 is brought closer to the connecting portion 12 side (the pair of operation portions 13 and 13 side), and the hotwood 3 is held by the hotwood holding portion 11. Thereby, a series of grafting work is completed in a short time with a simple operation.

  FIG. 3 is a cross-sectional view showing a state of a seedling grafted using the grafting connector 1, and FIG. 3A is a horizontal cross-sectional view at the position of the rootstock holding unit 10. FIG. 3B is a horizontal cross-sectional view at the position of the hogi holding unit 11, and FIGS. 3C and 3D are horizontal views for explaining the relative positional relationship between the rootstock 2 and the hogi 3. It is sectional drawing of a direction.

  As shown in FIG. 3A, in the joined state in which the rootstock 2 and the hogi 3 are joined, in the rootstock holding part 10, the both end edges 1A and 1B are overlapped in the radial direction. A state in which the rootstock 2 is pressed against the connecting portion 12 side (left side of the paper surface) by the elastic restoring force of both end edges 1A and 1B, and the inner peripheral surface of the rootstock holding portion 10 is in close contact with the outer peripheral surface of the rootstock 2 Become. In this case, the elastic restoring force of the both edge portions 1A and 1B due to the diameter expansion can be effectively applied from the direction F orthogonal or substantially orthogonal to the connecting portion 12. On the other hand, as shown in FIG. 3 (b), in the hogi holding part 11, with both end edges 1A, 1B overlapping in the radial direction, the hogi is restored by the elastic restoring force of both end edges 1A, 1B due to the diameter expansion. 3 is pressed against the connecting portion 12 side (left side of the paper), and the inner peripheral surface of the hogi holding portion 11 is in close contact with the outer peripheral surface of the hogi 3. In this case, the elastic restoring force of the both edge portions 1A and 1B due to the diameter expansion can be effectively applied from the direction F orthogonal or substantially orthogonal to the connecting portion 12. Thereby, it is possible to reliably graft the rootstock 2 and the hogi 3 using the grafting joint 1.

  As shown in FIG. 3 (c), by connecting the rootstock 2 and the hogi 3 using the jointing tool 1 for the grafting, the hogi 3 is connected to the connecting portion 12 side (left side of the paper) by the hogi holding portion 11. Therefore, the positions of the side surface of the rootstock 2 on the connecting portion 12 side and the side surface of the hogi 3 on the connecting portion 12 side can be matched or substantially matched. As a result, the overlapping portion (nutrient transmission path) of the vascular bundle 2C of the rootstock 2 and the vascular bundle 3C of the hogi 3 can be increased. For example, the center of the rootstock 2 shown in FIG. The situation where the vascular bundle 2C of the rootstock 2 and the vascular bundle 3C of the hogi 3 do not overlap or hardly overlap as in the case of grafting so as to match the center of the hogi 3 is avoided. It is possible to make the graft with Hoki 3 more reliable.

  As described above, since the grafting joint 1 is formed in a thin cylindrical shape, the grafting joint 1 is cracked or the grafting joint 1 is elastically deformed or plastically deformed as the seedling grows. Since it will come off naturally from the seedling, it is possible to omit the operation of removing the grafting connector 1 at the time of shipping the seedling or after shipping. In this case, since the slits S, S are formed in the grafting joint 1, the grafting joint 1 can be easily broken or deformed at the position of the connection portion 12 as the seedling grows. There is also an advantage of being able to do it.

[Another embodiment]
(1) In the above embodiment, an example in which the two slits S and S are formed in the end edge portion 1A on the one end side and the end edge portion 1B on the other end side of the jointing tool 1 for a graft is shown. As shown to a), you may form the slit S only in the edge part 1A of the one end side of the joining tool 1 for grafts, and the other end side of the joining tool 1 for grafts as shown in FIG.4 (b) You may form the slit S only in the edge part 1B. 4A and 4B, the position of the pair of operation units 13 and 13 is also set to a position where the rootstock holding unit 10 and the hogi holding unit 11 can easily be expanded in accordance with the length and position of the slit S. has been changed.

(2) In the above embodiment, the slit S cut into the longitudinal intermediate portion of the grafting connector 1 from the end edge 1A on the one end side and the end edge 1B on the other end side in a direction perpendicular to the longitudinal direction. As shown in FIG. 4 (c), the slit S, which is obliquely inclined so as to be positioned on the upper side toward the outer circumferential side, is provided at the longitudinal intermediate portion of the grafting joint 1 as shown in FIG. S may be formed. In this case, the inclination angles α and β that are inclined with respect to the direction orthogonal to the longitudinal direction are set to the same or substantially the same angle as the angle of the cutting surfaces of the rootstock 2 and the hogi 3 in the case of grafting by oblique joining. Or you may set to a different angle. By forming an obliquely inclined slit S in the jointing tool 1 for the graft, as shown in FIG. 4C, the triangular regions R and R on the upper side of the slit S shown in FIG. It is possible to secure a wide area for pressing the outer peripheral surface of the hogi 3 with 1B. Although not shown in the figure, a slit S that is inclined obliquely so as to be located on the lower side toward the outer circumferential end may be formed in the middle portion in the longitudinal direction of the grafting connector 1, and the direction orthogonal to the longitudinal direction. A combination of the slit S cut into the slit and the slit S inclined obliquely may be employed. Further, the inclination angles α and β inclined with respect to the direction orthogonal to the longitudinal direction may be set to the same angle or different angles.

(3) In the above-described embodiment, the tip of the edge 1B on the other end is in contact with the inner peripheral surface of the edge 1A on the one end, and the edge 1A on the one end and the edge on the other end Although the example which set the cross-sectional shape of the joint tool 1 for grafting in a non-joining state was shown so that the predetermined clearance K might be formed between 1B, as shown in FIG.4 (d), the other end The end of the edge portion 1B on the side does not contact the inner peripheral surface of the end edge portion 1A on the one end side, and the inner peripheral surface of the end edge portion 1A on the one end side and the outer peripheral surface of the end edge portion 1B on the other end side The cross-sectional shape of the grafting connector 1 in a non-joined state may be set so that the gap K is formed so that the two are parallel or substantially parallel. Moreover, as shown in FIG.4 (e), the inclination which inclines so that it may be located in a radial direction inner side toward the front-end | tip part of the edge part 1B of the other end side of the rootstock holding | maintenance part 10 and the hogi holding | maintenance part 11 You may form part 1D and may form the shape of the front-end | tip part of the edge part 1B of the rootstock holding | maintenance part 10 and the hogi holding | maintenance part 11 in a tapered shape. By forming the shape of the front end portion of the end edge portion 1B into a tapered shape, the inner peripheral surface and the base of the rootstock holding portion 10 are compared with the structure described in FIGS. 3A and 3B in the above embodiment. The gap between the outer circumferential surface of the tree 2 and the gap between the inner circumferential surface of the hogi holding portion 11 and the outer circumferential surface of the hogi 3 are further reduced so that the rootstock holding portion 10 and the rootstock 2 are further brought into close contact with each other. The hogi holding part 11 and the hogi 3 can be further brought into close contact with each other. Although not shown, the tip of the edge 1B on the other end is in contact with the inner peripheral surface of the edge 1A on the one end, and the tip of the edge 1A on the one end is the end on the other end. You may set the cross-sectional shape of the joining tool 1 for grafts in a non-joining state so that it may contact | connect the outer peripheral surface of the edge part 1B. In this case, the cross-section of the grafting connector 1 in a non-joined state so that a space is formed between the outer peripheral surface of the end edge portion 1B on the other end side and the inner peripheral surface of the end edge portion 1A on the one end side. The shape may be set, and the jointing tool 1 for the grafting member in a non-joined state so that the outer peripheral surface of the end edge portion 1B on the other end side contacts the inner peripheral surface of the end edge portion 1A on the one end side. A cross-sectional shape may be set. Although not shown, the tip of the edge 1B on the other end does not contact the inner peripheral surface of the edge 1A on the one end, and the tip of the end 1A on the other end is the edge on the other end. You may set the cross-sectional shape of the joining tool 1 for grafts in a non-joining state so that it may contact | connect the outer peripheral surface of the part 1B.

(4) In the said embodiment, although the example which formed a pair of operation parts 13 and 13 in the rootstock holding part 10 and the hogi holding part 11 was shown, a pair of operation parts 13 and 13 is not necessarily an essential structure. The pair of operation units 13 and 13 may be omitted. Even in this case, even if the hand is not very dexterous by effectively utilizing the predetermined gap K formed between the edge 1A on the one end side and the edge 1B on the other end By inserting a nail or a small piece between the predetermined gaps K, the diameter of the rootstock holding part 10 and the hotwood holding part 11 can be easily expanded.

(5) In the above embodiment, the grafting method in the case of grafting by hand using the grafting joint 1 in which the slit S is formed in advance is illustrated, but the grafting joint 1 in which the slit S is not formed is illustrated. After forming the slit S with a cutter such as a cutter or scissors, it may be grafted manually by the procedure shown in FIG. Further, in the case of automatically grafting by a graft production apparatus (not shown) that continuously grafts using a plurality of rootstocks 2 and hogi 3, joints for grafts in which slits S are not formed A slit S is automatically formed in the tool 1 by the blade part provided in the graft production device, and the rootstock holding unit 10 and the hotwood holding unit 11 are automatically used by using the diameter expanding device provided in the graft production device. You may comprise so that a series of grafting work may be automatically performed by expanding the diameter and automatically supplying the rootstock 2 and the hogi 3 by the supply device provided in the graft production apparatus. Even in the case of automatically grafting by the grafting apparatus using the grafting joint 1, a base having an arbitrary outer diameter within a predetermined range using the same jointing joint 1 without using a plurality of types of joints. It is possible to graft on the tree 2 and the hogi 3, and it is possible to save troubles such as changing the joint fitting according to the outer diameter of the rootstock 2 and the hogi 3. Simplification can be achieved. In both cases of manual grafting and automatic grafting by the graft production apparatus, the long tube is cut by a predetermined length with a blade or blade, and the above-mentioned joint for grafting 1 may be used.

  The jointing tool for grafts according to the present invention can be used for grafting various plants such as fruit vegetables, fruit trees, and flowers.

DESCRIPTION OF SYMBOLS 1 Jointing tool 1A End edge part on one end side 1B End edge part on the other end side 2 Rootstock 3 Hogi 10 Rootstock holding part 11 Hogi holding part 12 Connection part S Slit

Claims (4)

A graft joint for use in grafting rootstocks and hogis of different thickness,
It consists of a thin-walled cylindrical tube having a “6” -shaped cross-sectional shape in which one side is cut open in the longitudinal direction in a non-joined state in which the rootstock and hogi are not joined,
A slit cut in the circumferential direction is formed in the middle portion in the longitudinal direction of the tube, and in the joined state in which the diameter is increased from the non-joined state and the rootstock and hogi are joined, the longitudinal direction with respect to the slit The rootstock holding part that holds the rootstock on one end side is in close contact with the outer peripheral surface of the rootstock by the elastic restoring force due to the diameter expansion, with both end edges in the circumferential direction overlapping in the radial direction. In the state where both end edges in the circumferential direction are overlapped in the radial direction, the hotwood holding part that holds the hotwood at the other end in the longitudinal direction is in close contact with the outer peripheral surface of the hogi by the elastic restoring force due to the expansion of the diameter. The joint for the graft which is constructed in   A slit cut in the middle in the longitudinal direction of the tube from the edge on one end side in the circumferential direction, and a slit cut in the circumferential direction from an edge on the other end in the circumferential direction And a connecting portion for connecting the rootstock holding portion and the hogi holding portion between the two slits.   The sum of the lengths of the two slits formed at the edge portions on the one end side and the other end side is longer than the circumferential length of the connecting portion, and the length of the connecting portion is The slit length is set so that it may become longer than the length of the slit formed in the edge part of the one end side, and the length of the slit formed in the edge part of the said other end side. Joints for grafting. In a non-joined state in which the rootstock and hogi are not joined, each joint is thickened using a joint for a graft made of a thin-walled cylindrical tube having a “6” -shaped cross-section with one side cut in the longitudinal direction. It is a seedling grafted with different rootstock and Hogi,
In the grafting joint, a slit cut in the circumferential direction is formed in the middle portion in the longitudinal direction, and a rootstock holding portion that holds the rootstock on one end side in the longitudinal direction with respect to the slit has a circumferential direction. In the state where both end edges of each of the two are overlapped in the radial direction, the ear that is closely attached to the outer peripheral surface of the rootstock by the elastic restoring force due to the diameter expansion when grafting, and holds the spikelet at the other end in the longitudinal direction with respect to the slit A seedling in which the tree holding part is in close contact with the outer circumferential surface of the safflower by elastic restoring force due to diameter expansion when grafting in a state where both edge portions in the circumferential direction overlap in the radial direction.

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