JP3312234B2 - Seedling pot - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seedling-growing pot for uniformly growing each seedling while suppressing the root-rolling phenomenon when growing a plant seedling.

[0002]

2. Description of the Related Art Conventionally, when raising plant seedlings such as vegetable seedlings and flowering seedlings, plastic seedling pots made of polyethylene or vinyl have been frequently used. Conventional seedling raising pots are provided as a single seedling raising pot container (pot) and a tray-type seedling raising pot formed by connecting and connecting a large number of the single pots. In such a conventional seedling pot, the pot portion includes a cylindrical side wall that terminates at an opening edge at an upper end, and a bottom wall that is continuous with an axial lower end of the side wall and has a drain hole. And the side wall and the bottom wall form a seedling raising soil accommodating chamber.

In such a seedling-growing pot, since the root grows in a relatively small pot, the root extends along the inner surface of the pot, and the root area is very limited. . When the seedlings reach the planting / transplanting stage, most of the elongated roots are wound around the surface of the soil in the form of a coil (root winding), and the nutrient absorption inside the soil is insufficient. Further, in seedlings that have passed the proper planting / transplanting period, new roots are likely to be suppressed due to the root winding, which is not preferable for the growth of the seedlings and the survival and growth after the planting / transplanting period.

At present, as a means for avoiding such a root-wound state, a seedling-growing pot having slits in side walls and a bottom wall is known (Japanese Utility Model Laid-Open No. 5-43838).

[0005] However, in order to manufacture such a pot with a slit, it is necessary to form a slit in a separate step after forming it by vacuum forming or the like, which complicates the manufacturing process. Also, the required strength cannot be maintained due to the slits.

An object of the present invention is to provide a seedling-growing pot which is easy to form and has sufficient strength without causing the roots to be tightly tightened during cultivation and the root-wrap phenomenon does not occur.

[0007]

A seedling-growing pot according to the present invention comprises a cylindrical side wall which terminates at an opening edge at an upper end, and a bottom wall which is continuous with an axial lower end of the side wall and has a drain hole. A seedling growing pot formed as a single pot, with the side walls and the bottom wall partitioning a seedling raising soil storage chamber, wherein a plurality of ridges extending vertically are provided inside the side wall. In this case, the radius of curvature of the intersection between the rising wall from the side wall and the side wall of the protrusion is 1.0 mm or less.

Further, another seedling raising pot of the present invention has a cylindrical side wall which terminates at an opening edge at an upper end side, and a bottom wall continuous with an axial lower end side of the side wall and having a drain hole. The side wall and the bottom wall divide the nursery soil accommodating chamber into a pot, and a plurality of the pots are formed by connecting a plurality of bodies by connecting the upper end opening edge side of the side wall in the pot along a plane. A tray-type seedling raising pot having a pot body, wherein a plurality of ridges extending vertically are provided inside the side wall, and an intersection of the rising wall from the side wall and the side wall in the ridge. The radius of curvature of the corner is 1.
0 mm or less.

[0009]

When the root grows and extends in the circumferential direction along the inner surface of the pot, the growing point of the root abuts on the rising wall of the ridge and extends downward without further extending in the lateral direction. Therefore, root winding is prevented.

If the radius of curvature of the intersection between the rising wall from the side wall and the side wall of the ridge exceeds 1.0 mm, the intersection corner is rounded, so that the roots extend circumferentially along the intersection corner. It elongates and a root winding occurs. Therefore, the radius of curvature at the intersection corner must be 1.0 mm or less.

[0011] The strength of the pot is also improved by the plurality of protrusions provided on the side wall.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the seedling raising pot of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a perspective view of a seedling pot composed of a single pot, FIG. 2 is a plan view of the pot, FIG. 3 is a side view of the pot, and FIG. 4 is a line AA of the pot. FIG. 5 is an enlarged cross-sectional view showing a ridge of the pot. FIG. 6 is a partially cutaway plan view of a tray-type seedling raising pot formed by connecting and connecting a plurality of pots (cells), and FIG. 7 is an end view of the pot along line BB. FIG. 8 is a plan view showing an example of a single pot body having a different planar shape.

The seedling raising pot 1 composed of a single pot shown in FIGS. 1 to 4 and FIG. 8 basically has a cylindrical side wall 3 ending at an opening edge 2 at an upper end side, and a side wall 3. And a bottom wall 4 which is continuous with the lower end side in the axial direction.
Is provided with a drain hole 5 at the center thereof. The seedling-growing soil storage chamber 6 is defined by the side walls 3 and the bottom wall 4 and is formed as a single pot.

The nursery pot 1 shown in FIGS. 1 to 4 has a rectangular cross section, and the nursery pot 1 shown in FIG. 8 has a circular cross section. However, in the present invention, the shape of the cross section is not limited to the above.

Inside the side wall 3, there are provided eight ridges 7 extending vertically from the upper edge 2 to the lower edge. As shown in detail in FIG. 5, the ridge 7 is formed by a rising wall 8 erected substantially vertically from the side wall 3 and a top wall 9 that is substantially continuous with the rising wall 8. Intersection corner 10 where wall 8 and side wall 3 intersect
Has a radius of curvature (R) of 1.0 mm or less. Preferably 0.9 mm or less, more preferably 0.8 m
m or less. The intersection angle θ formed by the side wall 3 and the rising wall 8 is preferably 85 to 100 °, and particularly preferably 90 to 100 ° from the viewpoint of molding.

The height of the ridge 7 (the height of the rising wall 8) is preferably 0.3 to 3 mm. If it is less than 0.3 mm, the effect of preventing root winding is poor, and if it is more than 3 mm, it is difficult to stack pots. When the seedling raising pot of the present invention is manufactured by vacuum forming, the ridges 7
Is preferably 1 to 3 mm. If it is less than 1 mm, the intersection corner portion 10 is rounded, and the effect of preventing root winding is poor. In the case of manufacturing by injection molding, even if the height of the ridge 7 is less than 1 mm, the intersection corner portion 10 is not rounded.
The width of the ridge 7 (width of the top wall 9) is preferably 0.3 to 3 mm.

The height and width of the ridge 7 need not be the same over the entire length, but may be different in size along the way.
Further, the protrusion 7 may be provided from the vicinity of the upper end opening edge 2 to the vicinity of the lower end. However, in order to enhance the root winding prevention effect, it is preferable to provide from the upper end opening edge 2 to the lower end. It is preferable that the number of the ridges 7 provided on the side wall 3 is 4 to 12 in total, and it is preferable that the ridges 7 are arranged as evenly as possible in the circumferential direction.

If the radius of curvature at the intersection corner 11 where the rising wall 8 and the top wall 9 intersect is 1.0 mm or less,
The effect of preventing root winding is further improved.

On the other hand, the present invention also includes a tray-type seedling raising pot 21 in which a plurality of pots are connected and connected as shown in FIGS. The seedling raising pot 21 of the present embodiment has a cylindrical side wall 23 ending at an opening edge 22 at the upper end side,
A bottom wall 24 that is continuous with the axial lower end of the side wall 23
And a drain hole 25 is provided at the center of the bottom wall 24. A large number of pots, which divide the seedling-growing-soil accommodation room 26 by the side walls 23 and the bottom wall 24, are connected and connected. In this example, the pots are integrally formed via a connecting flange 32 with the upper end opening edge 22 of the side wall 23 of the pot being arranged in a plane along one plane. The pot of the tray-type seedling raising pot 21 shown in FIGS. 6 and 7 has a rectangular cross section, but the shape of the cross section is not limited thereto. Is also good.

Also in this embodiment, eight protrusions 27 extending vertically from the upper end opening edge 22 to the lower end are provided inside the side wall 23. The shape, size, number, and the like of the ridges 27 are the same as those described above with reference to FIG. 5 for the ridges 7 of the seedling raising pot 1 formed of a single pot.

That is, it is as follows.

The protruding ridge 27 is formed by a rising wall that stands almost vertically from the side wall 23 and a top wall that is substantially continuous with the rising wall, and the rising wall and the side wall 23 intersect. The radius of curvature (R) at the intersection corner is 1.0 mm or less. Preferably 0.9 mm
Or less, more preferably 0.8 mm or less.

The intersection angle formed by the side wall 23 and the rising wall is preferably 85 to 100 °, and particularly preferably 90 to 100 ° from the viewpoint of molding.

The height (height of the rising wall) of the ridge 27 is preferably 0.3 to 3 mm. If it is less than 0.3 mm, the effect of preventing root winding is poor, and if it is more than 3 mm, it is difficult to stack pots. When producing the seedling pot of the present invention by vacuum forming,
The height of the ridge 27 is preferably 1 to 3 mm. 1m
If it is less than m, the intersection corners will be rounded, and the effect of preventing root winding will be poor. In the case of manufacturing by injection molding, even if the height of the ridge 27 is less than 1 mm, the intersection corner portion is not rounded. The width of the ridge 27 (width of the top wall) is 0.3 to 3 mm.
Is preferred.

The height and width of the ridge 27 do not need to be the same over the entire length, and may be different in size along the way. Further, the protrusion 27 may be provided from the vicinity of the upper end opening edge 22 to the vicinity of the lower end. However,
In order to enhance the root winding prevention effect, it is preferable to provide from the upper end opening edge 22 to the lower end.

It is preferable that the number of the protrusions 27 provided on the side wall 23 is 4 to 12 in total, and it is preferable that the protrusions 27 are arranged as evenly as possible in the circumferential direction.

When the radius of curvature at the intersection corner where the rising wall and the top wall intersect is 1 mm or less, the effect of preventing root winding is further improved.

It should be noted that a single seedling-growing pot 1 shown in FIGS. 1 to 4 and 8 and a tray-shaped pot formed by connecting a plurality of pots shown in FIGS. 6 and 7 are connected. The material of the seedling raising pot 21 is preferably a plastic such as polyethylene or polystyrene.

The following description will be made based on data of use test examples for the seedling-growing pot of the present invention. The Chinese cabbage (Muso) was raised using a 128-well tray-type seedling raising pot and a 200-well tray-type seedling raising pot.
28 holes) and data as shown in Table 2 (200 holes) were obtained. The survey date is about one month after the sowing date.

[0031]

[Table 1]

[Table 2] In the table, Test No. 1 and test no. Test No. 4 uses the seedling raising pot of the present invention shown in FIGS. In the pot No. 1, the radius of curvature (R) at the intersection corner is
Is 0.7 mm. In the pot No. 4, the radius of curvature (R) at the intersection corner is 0.9 mm. Test N
o. 2 and test no. Test No. 5 used a seedling-raising pot having a radius of curvature (R) of 1.1 mm at the intersection of the ridges.
o. 3 and test no. Numeral 6 used pots for raising seedlings without ridges, and these were shown as comparative test examples.

[Consideration of test results]
Test No. using a pot without ridges. 3 and test no.
6 is the highest in each of the tables, and the test N using a pot having a radius of curvature (R) of 1.1 mm at the intersection of the ridges.
o. 2 and test no. 5 is next highest. This is because in the case of a pot without ridges, the seedlings wrapped around the pot wall. If it exceeds 0 mm, it indicates that the root winding prevention effect is not sufficient. The numerical value of the underground weight is the test No. using the seedling raising pot of the present invention. 1 and Test No. 4 is the highest in each table, and it can be said that the number of roots increased in the pot.

[0033]

The pot for raising seedlings of the present invention has a simple structure, can be easily manufactured by molding plastic, and is extremely economically advantageous in that it is suitable for mass production. I can say. Furthermore, the seedling raising pot of the present invention is characterized in that, by providing a plurality of specific ridges on the side wall of the pot, the roots are tightly packed during the cultivation and the root winding phenomenon can be suppressed. It is extremely effective in that it has good root growth and enables ideal seedlings that extend to deep layers. Also, it has sufficient strength during storage, transportation and seedling raising.

[Brief description of the drawings]

FIG. 1 is a perspective view of a seedling raising pot according to one embodiment of the present invention.

FIG. 2 is a plan view of the seedling raising pot of FIG.

FIG. 3 is a side view of the seedling raising pot of FIG. 1;

FIG. 4 is a cross-sectional view taken along line AA of FIG.

FIG. 5 is an enlarged cross-sectional view showing a ridge of the pot for seedling raising of FIG. 1;

FIG. 6 is a partially cutaway plan view of a seedling raising pot of another embodiment.

FIG. 7 is an end view taken along line BB of FIG. 6;

FIG. 8 is a plan view of a seedling raising pot of yet another embodiment.

[Explanation of symbols]

 1,21 Seedling raising pot 2,22 Top opening edge 3,23 Cylindrical side wall 4,24 Bottom wall 5,25 Drainage hole 6,26 Seedling raising soil accommodation room 7,27 Ridge 8 Rising wall 9 Top wall 10 Intersection angle Part 11 Intersection corner part 32 Connecting flange part

──────────────────────────────────────────────────続 き Continuing on the front page (72) Mikio Matsunaga, Inventor 460-44, Rokujizo, Ritto-cho, Kurita-gun, Shiga Prefecture (72) Inventor, Takayoshi Otani 58, Shimogamo Uminokicho, Sakyo-ku, Kyoto, Kyoto, Japan (56) References 109956 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) A01G 9/10 A01G 9/02 603

Claims (2)

(57) [Claims] 1. A seedling growing soil having a cylindrical side wall terminating at an opening edge at an upper end side and a bottom wall continuous with an axial lower end side of the side wall and having a drainage hole. A seedling growing pot formed as a single pot body that divides a housing chamber, wherein a plurality of ridges extending vertically are provided inside the side wall, and a rising wall of the ridge from the side wall is provided. A pot for raising a seedling, wherein a radius of curvature at an intersection between the side wall and the side wall is 1.0 mm or less. 2. A seedling growing soil having a cylindrical side wall terminating at an opening edge at an upper end side, and a bottom wall continuous with an axial lower end side of the side wall and having a drain hole. A tray-type seedling having a plurality of pots formed by partitioning a housing chamber into a pot, and arranging the upper end opening side of the side wall of the pot in a plane along one plane and connecting and connecting a plurality of pots. A pot for use, comprising a plurality of ridges extending in the up-down direction inside the side wall, wherein a radius of curvature of an intersection corner between the rising wall from the side wall and the side wall in the ridge is 1.0 mm or less. A pot for raising seedlings,