JPH04346723A - Apparatus for raising seedling - Google Patents

Abstract

PURPOSE:To improve separating properties for each pot in mechanical transplanting. CONSTITUTION:An apparatus for raising seedlings is characterized as follows. Pots 2... composed of wall part (2d)... and bottoms (2b)... having respective opened holes (2c)... are mutually independent on the side of the bottoms (2b)... and mutually connected lengthwise and crosswise on the side of the openings (2a)... and the whole is in a square shape and formed from a material corrosive in soil. The width (W1) of connecting parts (2e)... on the side of one direction in length and breadth of the openings (2a)... is larger than the width (W2) of the connecting parts (2f)... on the side of other directions.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seedling grower for growing seedlings of rice, vegetables, etc. by dividing them into individual plants.

0002

2. Description of the Related Art Conventionally, as disclosed in Japanese Unexamined Patent Publication No. 1-141512, a number of pots each having a wall portion and a bottom portion with holes are connected to each other vertically and horizontally through openings, the bottom portions of which are independent from each other. There is a seedling raising device which is made of a material that can corrode in the soil and has a rectangular shape as a whole, and the width of the connecting portion in the vertical direction and the width of the connecting portion in the horizontal direction are particularly different at the connecting portion on the opening side of this seedling raising device. Nothing was closed.

[0003] Also, in this seedling raising device, seedlings are grown with the connected opening side facing down and the bottom side facing up, and the seedlings that have sprouted from the hole at the bottom are placed on a transplanter, and then A seedling separation tool such as tweezers of a transplanter passes through the opening side in a manner to cut the left and right lateral joints, separates each plant from the pot, and transplants the whole pot.

0004

[Problem to be solved by the invention] When growing seedlings using a seedling grower consisting of a large number of pots, it is necessary to increase the number of pots per predetermined area by narrowing the width of the connecting part of the pots in order to improve the efficiency of seedling production. There is a need to. However, narrowing the width of the connecting portion of the pot causes problems when separating the pots using a seedling separation tool of a transplanter. That is, since the lateral joints are forcibly separated by the seedling separation tool, even if the width of the joints is narrow, they will be cut at the joints. On the other hand, the vertical joints through which the seedling separation tool does not pass are simply torn off, so if the width of the joints becomes narrow, not only the joints but also the walls of adjacent pots may be torn off. If the walls of the pot are pulled, the bed soil will spill out, disrupting the planting posture during transplanting, damaging the roots of the seedlings, and having a negative impact on their establishment in the ear bed. Furthermore, when the connecting portion of the pot becomes narrower, the wall thickness becomes thicker at the narrower connecting portion in conventional molding using pulp molding, and the separability of the connecting portion is significantly reduced.

[0005]

[Means for Solving the Problems] In order to solve the above problems, the present invention provides wall portions 2d... and a bottom portion 2 having holes 2c.
A large number of pots 2 made up of pots 2... are independent of each other on the bottom 2b... side and are connected to each other vertically and horizontally on the opening 2a... side, and the whole is shaped into a rectangular shape made of a material that can corrode in the soil. Width W1 of connecting portion 2e... on one side of vertical and horizontal direction of 2a...
The seedling raising device is characterized in that the width W2 is wider than the width W2 of the connecting portion 2f on the other side.

[0006]

Embodiment FIGS. 1 and 2 show a seedling raising device according to an embodiment of the present invention. This seedling raising device 1 has a large number of pots 2 each having a wall 2d and a bottom 2b having holes 2c, each of which is independent from the other on the bottom 2b side and mutually arranged vertically and horizontally on the opening 2a side. They are connected, and the whole is arranged in a rectangular shape and molded into a connected shape. The overall size is 300mm in width.
, height width 300mm, general seedling raising box 3 (width 300m
The size is such that two seedling raising devices 1 can be placed side by side in a 600 mm vertical width.

[0007] Each pot 2 of the seedling raising device 1 has four walls 2.
d... and a bottom part 2b with holes 2c, and openings 2a...
The bottom portion 2b has a truncated pyramid shape, which is quadrangular in plan view and trapezoidal in side view. Moreover, the opening 2a is
It has a rectangular shape, approximately 25 mm in length and width, and is close to a square. Since the bottom parts 2b... are independent from each other, the opening part 2b...
a... It is smaller and has a rectangular shape with dimensions of about 20 mm in length and width, and has one round hole 2c with a diameter of 15 mm. The depth from the top surface of the opening 2a to the bottom 2b is 3
It is 0mm. The pots 2 may have a truncated conical shape, and the bottom portion 2b may have a circular or hemispherical curved shape. Further, the hole 2c may be a square hole, or the pot 2 may be shaped into a cylinder by cutting off the bottom portion 2b.

Furthermore, the width W1 of the connecting portions 2e connected in the vertical direction on the side of the openings 2a of the pots 2 is wider than the width W2 of the connecting portions 2f connected in the horizontal direction. The width W1 of the vertical connecting portion 2e is 10 mm, and the width W1 of the vertical connecting portion 2e is 10 mm.
The width W2 of f... is 5 mm. This seedling growing box 1 in the seedling growing box 3
When fitting two seedling boxes 1 side by side, fit them so that the vertical direction of the seedling growing boxes 1, 1, which are connected by the wide connecting parts 2e, is parallel to the longitudinal direction of the seedling box 3.

[0009] The seedling raising device 1 is formed by scooping the dissolved waste paper into a wire mesh mold, allowing it to dry, and then removing the mold, thereby molding the seedling raising device 1 into a predetermined shape. Here, since the width of the pot connecting portions 2f in the horizontal direction is narrow, the wall thickness there becomes a little thick, but since the pot connecting portions 2e in the vertical direction are wide, the wall thickness here does not increase. Therefore, the overall amount of paper is smaller than when the vertical and horizontal connections are narrow, reducing the amount of nitrogen consumed in the soil bed due to the progress of paper corrosion during seedling raising, and reducing the effect of paper on seedling raising. It becomes less. Further, since the seedling nursery device 1 is made of paper, even if the seedlings are transplanted together with the pots 2 to the field, the pots 2 will rot in the soil. Note that the material is not limited to paper (pulp), but may be a plastic material as long as it has biodegradable properties.

Now, in order to raise seedlings using the seedling raising device 1 as described above, a seedling bed as shown in FIGS. 3 and 4 is made and the seedlings are raised. First, pots 2 are filled with soil 4 and placed in seedling box 3 with bottoms 2b facing up. Seeds S are sown in each pot 2 and covered with soil, and top soil 5 is filled in the valleys between the independent pots 2. Seedlings are grown in the seedbeds created as described above, with appropriate watering and temperature control.

[0011] The potted seedlings N... grown in this manner are loaded onto a transplanting machine and reliably transplanted to the field. That is, as shown in FIG. 5, first, the potted seedlings N... are placed on the seedling supply section T so that the direction toward the transplanting tool P becomes the vertical direction of the seedling raising device 1. The potted seedlings N... placed on the seedling supply section T are
By the left and right reciprocating movement of the seedling supply unit T and the seedling feeding device Pt that feeds the seedlings one row at a time, the front row of block seedlings N is delivered one pot at a time to the seedling dividing port T in accordance with the cycle of the planting movement of the transplanting tool P.
supplied to a. Then, the potted seedlings N supplied to the seedling dividing opening Ta are transferred to the transplanting blades Pb, Pb, which operate the opening/closing operation of the transplanting tool P.
enters from above and is separated. At the same time, the transplant blades Pb and Pb close, and the pot seedling N is transferred to the transplant blades Pb and P.
It is held between b.

[0012] Here, the connecting portion 2f that connects the pots 2 in the lateral direction is forcibly separated by the transplant blades Pb, Pb of the transplant tool P entering from above (FIG. 6). On the other hand, pot 2
The connecting portion 2e that vertically connects the implant blades Pb, Pb
is torn off when the potted seedling N is pinched and transferred downward. This vertical connecting portion 2e that is torn off is
As described above, since the width W1 is wider than the width W2 of the horizontal connecting portions 2f, the pots are torn off only at the connecting portions without being torn off to the wall of the adjacent pot. In addition, since the longitudinal connecting portions 2e are wide, the wall thickness at these connecting portions does not become particularly thick during molding, and the separability of the connecting portions is also good (FIG. 7).

[0013] Then, the potted seedling N whose connecting portions 2e and 2f have been separated by the transplant blades Pb and Pb as described above is transported to the field without disturbing its posture. Then, when the seedlings N transferred to the field area reach the hole or groove made in advance, the transplant blades Pb, Pb held therein open, and the seedlings N are pushed out by the seedling pusher Pp and planted. lastly,
The potted seedlings N planted in the field are appropriately covered with soil. In this way, the potted seedlings N... are planted one pot at a time in the field, and then take root and grow in the soil. Pot 2... is further corroded in the soil of the field, and is completely corroded. In addition, Tb is a seedling receiver, and when the potted seedling N... is transferred to the seedling dividing opening Ta, it closes the seedling dividing opening Ta and receives the bottom of the seedling N, and the transplanting blades Pb, Pb
When dividing the seedling N, the seedling dividing opening T
This is a member that rotates to open the a.

By the way, the seedling raising device 1 is impregnated with or coated with a fungicide or fungicide during or after molding, and mold may grow on the surface and inside of the paper seedling raising device 1 during seedling raising. It is designed to suppress the activity of bacteria that are harmful to the growth and growth of plants. As a result, a more sufficient sterilizing effect can be obtained than by spraying a chemical solution during the process of sowing seeds in a seedling bed using a seedling nursery, so the growth of mold and bacteria is suppressed and growth is not inhibited. This suppresses the deterioration of the air permeability of the seedling nursery, prevents root rot, and allows the seedlings to grow well. Furthermore, the paper (pulp) that is the material of the seedling nurturing device 1 becomes less likely to corrode during seedling raising, and the decline in the rigidity of the seedling nurturing device itself is suppressed, so the pots 2 are less likely to collapse, and the seedling nurturing device 1 becomes more difficult to grow. When the seedlings are loaded onto a transplanter, accurate feeding of the seedlings becomes possible and good mechanical transplantation is achieved.

[0015] Furthermore, when a polymeric material is mixed into the bed soil 4 packed into each pot 2 of the seedling raising device 1, the water retention and caking properties of the bed soil 4 are increased. This not only improves growth, but also increases the viscosity of the soil bed 4 itself, which causes the soil soil 4 to stick to the inner surface of the pots 2. The bed soil 4 is less likely to spill out from the opened openings 2a, and poor rooting after transplantation can be prevented. Furthermore, in this case, if the top soil 5 is made without the addition of polymer materials, or if the top soil 5 is not applied,
Soil becomes difficult to adhere to the transplanting blade (seedling separation blade) of the transplanting machine,
In addition, the separation resistance is reduced, and each plant in pot 2 can be separated well.

[0016] Furthermore, if a mixture of peat moss, bark compost, and perlite with a light specific gravity is used for the bed soil 4 instead of using soil, the resistance during rooting and elongation will be reduced. This results in good rooting and less spillage of the bed soil 4 during mechanical transplantation as described above, resulting in good rooting after transplantation. When this bed soil 4 is used, if a soil with high water-retention properties mainly made of soil is used as the top layer 5, uneven drying of the bed soil 4 can be prevented and seedlings can be arranged in a good manner. Moreover, since the bed soil 4 is highly elastic, the wall portions 2d of the pot 2 are less likely to be torn when pinched by transplanting blades during mechanical transplantation.

By the way, the flooring member 6 as shown in FIG.
If used as a seedbed as shown in Figure 9, when separating the seedlings one pot at a time and transplanting the whole pot, the soil 4 packed in the pot 2 will spill out from the opening 2a, which will prevent the seedlings from taking root after transplanting. You can prevent it from getting worse. That is, seedlings are raised in a seedling bed in such a way that each lid part 6a of the bedding member 6 covers the lower opening 2a of the pot 2 filled with bed soil 4 of the seedling raising device 1. The bedding member 6 is made of a material that corrodes more slowly than the material of the seedling raising device 1 (such as biodegradable plastic), and each lid portion 6a overlaps with each pot opening 2a of the seedling raising device 1. They are arranged at the same spacing as the pots 2, and are connected by thin wire-like connecting parts 6b, which are easy to separate. In addition, projections 6c are integrally molded on each of the lids 6a, and when seedlings are grown with the opening 2a of the pot 2 covered, the roots that have grown into the projections 6c will become entangled with the lid. The portions 6c are prevented from falling out from the pot openings 2a.

[0018] During seedling raising, if the sown seeds S do not germinate and some plants are missing in some of the pots 2... as shown in Figs. 10 to 13, supplementary planting seedlings n... It is sufficient to raise seedlings and transplant the supplementary planting seedlings n to pots 2 in which germination did not occur. Specifically, seedlings n for supplementary planting are raised using a seedling raising device 7 for supplementary planting made of plastic and having a shape in which pots 8 are connected vertically and horizontally, similar to the seedling growing device 1 described above. Each pot 8 of the seedling grower 7 for supplementary planting is a small pot, with an opening 8a.
The diameter of... is slightly smaller than the diameter of the round hole 2c... of the pot 2... of the seedling raising device 1. Further, a small hole 8c is made in the bottom part 8b of the pot 8. To create a seedbed for supplementary planting seedlings using this seedling raising device 7 for supplementary planting, first, the pot 8
Into each pot 8 with the opening 8a of... facing up,
A bed soil 9 made of a 1:1 mixture of soil and peat moss is compacted and packed, and then the same seeds S are sown at the same time as the seedling raising device 1 and covered with soil. Then, the seedling raising device 7 for supplementary planting, which has been filled with soil and sown, is placed in the seedling raising box 3, which has been filled with soil in advance, to raise seedlings n for supplementary planting (FIG. 10). When supplementary planting is to be carried out in the pot 2 in which the plant is missing, the supplementary planting seedlings n... grown as described above are transferred from the bottom 8b side of the pot 8 to the seedling protruding portion 9a of the supplementary planting rod 9. Insert it into the hole 8c and pull it out one by one (Fig. 11). On the other hand, in the pot 2 where the plant is missing, a hole 10 is formed by pushing the hole forming part 9b formed at the other end of the planting rod 9 (FIG. 12). . Then, the supplementary planting seedling n extracted as described above is inserted into the formed supplementary planting hole 10.
Push in and press the base to tighten (Figure 13). In this way, by replanting the missing pot 2..., the replanting work can be carried out smoothly without causing damage to the plants. By the way, the bed soil 9 to be filled into each pot 8 of the seedling raising device 7 for supplementary planting contains peat moss (fine granules), vermiculite (fine granules) and perlite (fine granules) at a ratio of 60:2, respectively, without using soil.
Mix at a ratio of 0:20 and apply fertilizer at a rate of 80 to 12 per 11 liters.
By applying 0mg of soil and adjusting the moisture content to around 50%, root germination and elongation will be unhindered and growth will be good. You can grab it and pull it out. Furthermore, after supplementary planting, the seedlings adhere well to the soil in the pot 2.

By the way, as shown in FIGS. 14 and 16, imitation seedlings 10 made of vinyl or plastic,
11 can be used to construct display seedlings. Figure 14
is a nursery using imitation seedlings 10 imitating lettuce. As shown in FIG. 15, this imitation lettuce seedling 10 is produced by inserting a cup part 10b into a fixing base 10a embedded in the bottom 2b side of a pot 2, and then inserting a leaf part 10c into the cup part 10b. It is constructed by inserting it so that it is bent upward. FIG. 16 shows a seedbed using imitation seedlings 11 imitating cabbage. This imitation cabbage seedling 1
1, as shown in FIG. 17, the stem 11b is inserted into the fixing base 11a embedded in the bottom 2b side of the pot 2, and the leaf parts 11c are inserted into the branches of the stem 11b. Consists of.

[0020]

[Operations and effects of the invention] Opening 2a of pot 2 of seedling nursery 1
Since the width W1 of the connecting portion 2e connecting in the vertical direction on the … side is wider than the width W2 of the connecting portion 2f connecting in the horizontal direction, potted seedlings N using this seedling raising device 1 are transferred to a transplanter. Connecting portion 2f that connects pots 2 laterally when transplanting with
In this case, the transplant blades Pb, Pb of the transplant tool P enter from above and are forcibly separated. On the other hand, the connecting portion 2e that vertically connects the pots 2... is torn off when the transplant blades Pb, Pb sandwich the potted seedling N and transport it downward. The width W1 of the vertical connecting portion 2e to be torn off is wider than the width W2 of the horizontal connecting portion 2f.
The wall of the adjacent pot is not torn off, but only at the joint. In addition, the vertical connecting portion 2e...
Since the width of the joint is wide, the wall thickness at this joint does not become particularly thick during molding, so the joint can be separated easily. Therefore, the potted seedlings N... are reliably separated at the connecting parts 2e and 2f, so that the bed soil 4 in the pot 2 is prevented from spilling out, and the seedlings take root well in the field after transplanting.

[Brief explanation of drawings]

[Figure 1] Perspective view of seedling nursery device (opening on top)

[Figure 2] Perspective view of the seedling nursery (bottom is on top)

[Figure 3] Perspective view of a seedbed using a seedling nursery

[Figure 4] Side cross-sectional view of a seedbed during seedling raising

[Fig. 5] A perspective view illustrating the state of transplantation using a transplanter.

[Figure 6]
Rear view illustrating the state of separation with the transplant blade

[Figure 7] Side cross-sectional view illustrating the state of separation with the transplant blade

[Figure 8] Perspective view of bed member

[Figure 9] Side sectional view of a seedbed using bedding members

[Figure 10] Side cross-sectional view of seedlings for supplementary planting during seedling raising

[Figure 11] Side cross-sectional view showing sampling of seedlings for supplementary planting

[Figure 12] Side cross-sectional view showing the supplementary planting process of seedlings for supplementary planting

[Fig. 13] Side cross-sectional view showing the state of supplementary planting of seedlings for supplementary planting

[Figure 14] Side cross-sectional view of a nursery using imitation lettuce seedlings

[Fig. 15] A perspective view showing the structure of an imitation lettuce seedling.

[
Figure 16: Side cross-sectional view of a seedbed using imitation cabbage seedlings

[Figure 17] A perspective view showing the structure of a simulated cabbage seedling.

[Explanation of symbols]

1: Seedling nursery 2: Pot 2a: Opening 2b: Bottom 2c: hole 2d: Wall part 2e: Vertical connection part 2f: Lateral connection part W1: Width of vertical connection part W2: Width of horizontal connection part

Claims (1)

[Claims] [Claim 1] Wall portion 2d... and bottom portion 2b with hole 2c.
In a seedling nursery, a large number of pots 2 are made of a material that can corrode in the soil in a rectangular shape, in which a large number of pots 2 are independent from each other at the bottom 2b and are connected to each other vertically and horizontally at the opening 2a.
A seedling raising device characterized in that the width W1 of the connecting portions 2e on one side in the vertical and horizontal directions of the openings 2a is wider than the width W2 of the connecting portions 2f on the other side.