JP2003070364A - Raising seedling pot and method for making the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a raising seedling pot at well-reduced cost, affording high transplanting efficiency and also contributing to environmental protection. SOLUTION: This raising seedling pot 1 is made by the following procedure: a pulp-like (paper-like) material including sugar cane residues and dried grass/ leaves of straw, reed, annual plant and/or the like is structured to a nearly octagonal bottomed vessel form in accordance with a raising seedling tray shape by press forming, the bottom of the pot 1 and the lower part of the surrounding sidewall of the pot 1 are provided with a through hole 1a and through holes 1b, respectively, and the surface of the pot 1 is provided with a paraffin film for regulating the biodegradation period of the pot 1. Because of being made of the naturally occurring annual plant fibers, this pot 1 has biodegradability enough to easily degrade (decay) in soil in a relatively short period, the paraffin film on the surface thereof being weathered easily as well; therefore, this pot 1 enables the seedlings to directly be transplanted without removing them therefrom and can also be made by using the inexpensive material.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a seedling-growing pot having biodegradability which decomposes in soil and a method for producing the same.

[0002]

For example, seedling-growing pots used for seedling (fertilizing) management of vegetables, flowers, flowering trees, etc.
Conventionally, it is generally formed of a plastic such as vinyl chloride or polyethylene in a circular pot shape. However, in such a plastic pot for raising seedlings, when transplanting the seedlings into a field or a large pot, the seedlings must be taken out from the pot one by one, which makes the work efficiency of transplanting poor. At the same time, the roots of the seedlings might be damaged. Furthermore, it is necessary to dispose of the pot after use as garbage,
It will lead to environmental deterioration.

Therefore, in order to solve the above problems, for example, as disclosed in Japanese Patent Laid-Open No. 9-322658,
It is considered to construct a pot for raising seedlings from a biodegradable plastic that decomposes in the soil. However, since biodegradable plastic has a high material cost, pots for raising seedlings using it are also expensive, and it is the current situation that biodegradable plastic has not been sufficiently spread due to such a price problem.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a pot for raising seedlings which is excellent in work efficiency of transplantation, can contribute to environmental protection, and can achieve sufficient cost reduction. The present invention further provides a method for producing a seedling-growing pot suitable for producing such a seedling-growing pot.

[0005]

Means for Solving the Problems The present inventor has, as a material constituting a pot for raising seedlings, a biodegradable plastic which has been considered in the past, in place of the biodegradable plastic, while having a function equal to or higher than that of the biodegradable plastic. We have made various trials and researches to find cheaper products. As a result, a pulp-like material containing sugarcane residues and rice straw, wheat straw, reeds, and annual leaves such as annual plants decomposes (corrodes) in the soil in a relatively short period of time and returns to the soil naturally. It has been confirmed that the molded product is easy to mold, and that the molded product has sufficient strength and rigidity as a pot for raising seedlings.
The present invention has been accomplished.

That is, the pot for raising seedlings according to claim 1 of the present invention comprises 60 to 80% by weight of sugarcane residue and 40 to 2%.
It is characterized in that it is formed into a pot shape from a pulp-like material containing 0% by weight of rice straw, wheat straw, reeds, and dried grass leaves such as annual grass. According to this, a pulp-like material made from the residue of sugar cane and dried grass leaves such as rice straw, that is, the fiber of natural (natural) annual plants, so that it is relatively short in the soil. Easily disassembled (corrosion)
As a result, it is possible to transplant the seedlings without removing them from the seedling raising pot. By the way, according to the research conducted by the present inventor, although it depends on soil quality, temperature (season), etc., it decomposes in soil within about 3 weeks to 2 months. Therefore, it is possible to improve the work efficiency of transplantation, prevent damage to the roots of seedlings, and prevent the generation of dust, thus protecting the environment.

At this time, it is desirable to mix the residue of sugar cane and the dried grass leaves in the pulp-like material as described above. Since the residue of sugar cane contains a large amount of starch,
Adhesiveness can be obtained without adding a separate pressure-sensitive adhesive or the like, fibers can be solidified into a paper-like shape and excellent in moldability, and sufficient strength and rigidity as a paper-like molded article can be obtained. And unlike expensive materials such as biodegradable plastics, the residues of sugar cane and dried grass that are the materials are, so to speak, intended to reuse waste and can be obtained at low cost. Can be provided at low cost. In addition, it does not use forest resources such as wood pulp, and can also conserve resources.

The method for producing a seedling-growing pot according to a fourth aspect of the present invention is the method for producing a seedling-growing pot described above, wherein the molding material in which the pulp-like material is dissolved in water is permeated. The present invention is characterized in that it includes a molding step of supplying to a molding die device having properties and press-molding into a pot shape, and a drying step of heating a molded product to remove water. According to this, the pulp-like material can be compacted to form a pot having sufficient strength and rigidity, and the seedling-raising pot as described above can be manufactured by a simple process.

[0009] Here, when carrying out seedling (fertilization) management using a pot for raising seedlings, a seedling raising tray is generally used. In this case, however, the seedling raising pot has a substantially octagonal shape corresponding to the shape of the seedling raising tray. It is desirable to form the container with a bottom and to form a through hole in the bottom and the lower part of the side wall (the invention of claim 2).

As a result, the seedling-growing pots can be set in the seedling-growing tray without any gaps, and the work of setting the seedling-growing pots in the seedling-growing tray can be automated and soil can be sown to the seedling-growing pot. It is also possible to proceed with the mechanization (automation) of such work. Along with this, the through holes formed in the bottom part and the lower part of the side wall part of the seedling-growing pot ensure air permeability and translucency to the root part of the seedling during the seedling-raising period, so that so-called looping of the root can be prevented. , Rooting can be good. Further, after transplanting into the soil, the root can be extended to the outside through the through hole.

In this case, when forming the through hole, the through hole is formed in the bottom portion of the molded product in the molding step, and the through hole is formed in the lower portion of the side wall portion of the molded product after the drying step. The hole forming step for forming the holes may be performed (the invention of claim 5). According to this, it is possible to rationally form the through holes in the bottom portion and the lower portion of the side wall portion of the seedling raising pot without complicating the mold structure.

By the way, even during the seedling raising (fertilizing) period,
As the soil is in the pot, there is a circumstance where the decomposition progresses slowly. In this case, the seedling raising period varies depending on the type of seedling, and for example, the seedling raising period of a vegetable seedling is about 2 months, whereas the seedling raising period of a flower is 3 to 4 months. Therefore, if the seedling-growing pot decomposes too early (during the seedling-raising period), transplantation may not be performed properly.

Therefore, the present inventor conducted further tests and studies on how to control (delay) the decomposition period in the above-mentioned seedling-growing pot, and formed a paraffin film on the surface of the seedling-growing pot. By doing so, it was confirmed that the decomposition period can be delayed (the invention of claim 3).

At this time, by coating the surface of the pot made of pulp-like material with paraffin,
Since the decomposition of the pot is suppressed and the decomposition of the pot is started after the paraffin film is weathered in the soil, the decomposition period can be delayed accordingly. In this case, the paraffin film is weathered, for example, in about a few months, and the thicker the paraffin film is, the longer the decomposition period can be. Further, since the paraffin membrane inhibits water permeability, it also has a function of retaining water in the pot during the seedling raising period. Further, there is an advantage that the surface of the pot becomes slippery and, for example, the handling property when picking up the stacked one by one is improved. Paraffin is not harmful to seedlings or the environment.

In order to form the paraffin film on the surface of the pot for raising seedlings, various methods such as applying liquid paraffin and drying it are conceivable. However, when the above-mentioned manufacturing method is adopted, molding is performed. It is preferable to employ a method in which powder of solid paraffin is mixed with the material and the molding material is heated to a temperature equal to or higher than the melting point of solid paraffin in the molding step (the invention of claim 6).

According to this, in the molding step, the solid paraffin in the molding material is melted and exudes to the surface of the pot, and then cooled to form a paraffin film on the surface of the pot. The paraffin film can be easily formed without providing a separate step for forming the paraffin film. The melting point of solid paraffin is at most 70
Since it is about ℃, there is no need to heat it to a high temperature. Also,
According to the research conducted by the present inventor, the amount of solid paraffin powder blended is 10 to 30 with respect to 100 parts by weight of pulp-like material.
It is desirable to use parts by weight so that an appropriate decomposition period can be obtained.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows the appearance of a seedling-growing pot 1 according to the present embodiment. The seedling-growing pot 1 is a pulp-like mixture containing the residues of sugar cane and dried grass leaves such as straw, reeds, and annual plants ( It is configured in a pot shape (bottomed container shape) having a gentle taper shape such that the material becomes a paper-like material and becomes narrower toward the bottom. A method for manufacturing the seedling-growing pot 1 will be described in detail later.

In this case, in this embodiment, the seedling-growing pot 1 has a substantially octagonal shape corresponding to the shape of the seedling-growing tray 2 (see FIG. 2) (a state where four corners of a quadrangle are chamfered). It is configured like a container. In addition, one relatively large through hole 1a is formed at the center of the bottom of the seedling raising pot 1, and four comparisons are made at the lower portions of the front, rear, left and right side wall portions. A relatively small through hole 1b is formed.

In this embodiment, a paraffin film for adjusting the decomposition period is formed on the entire outer and inner surfaces of the seedling-growing pot 1. In addition, the thickness of the wall forming the seedling-growing pot 1 is about 1 mm including the paraffin film, and sufficient strength can be obtained, and it has higher rigidity than a thin-walled plastic seedling-growing pot. It is said that.

Using this pot 1 for raising seedlings, vegetables, flowers,
A seedling raising tray 2 as shown in FIG. 2 is used to manage seedling raising (fertilization) of flowers and trees. The seedling raising tray 2 is made of, for example, a plastic molded product, and is shown in FIG.
As shown in FIG. 4, in this case, there are a total of 24 pot accommodating portions 2a of four rows vertically and six rows horizontally. The seedling raising tray 2 has a lattice-shaped frame portion 2b for partitioning each pot housing portion 2a at the upper part, and each intersection portion 2c of the lattice of the frame portion 2b is a square shape inclined at 45 degrees (triangular at the edge portion). Shape). Then, in each pot accommodating portion 2a, each intersection portion 2
4 connecting portions 2d continuously extending downward from each side portion of b
A substantially rectangular net-like bottom portion 2e that supports the bottom portion of the seedling-growing pot 1 is provided integrally therewith.

With the seedling-growing pots 1 accommodated in the pot-accommodating portions 2a of the seedling-growing tray 2, soil is put into each seedling-growing pot 1 to sow seeds, and then water is sprinkled to grow seedlings. Be seen. At this time, as shown in FIG. 2B, since the seedling-growing pot 1 has a substantially octagonal shape corresponding to the shape of the pot housing portion 2a, the seedling-growing pot is provided on the upper surface of the seedling-growing tray 2. 1 can be set without a gap, the soil can be put in without spilling from the gap, and sprinkling can be efficiently performed. Shipment of seedlings after raising seedlings is also performed for each seedling raising tray 2.

Next, a manufacturing method according to this embodiment for manufacturing the above-mentioned seedling raising pot 1 will be described with reference to FIGS. FIG. 3 schematically shows the entire manufacturing process of the seedling-growing pot 1, and FIG. 4 shows the molding process and the drying process. Here, as shown in FIG. 3, first, the sugarcane residue 3 after extraction of sugar, which is the raw material, and the dried grass leaves 4 obtained by cutting and drying rice straw, wheat straw, reeds, annual grasses, etc. Is used to perform a pulping process P1 in which fine fibers are used.

Then, the pulp-like residue 3 and the dried grass and leaves 4 of the sugar cane are mixed with water, strained and dried, and a felt-like paperboard process P2 is carried out. At this time, the mixing ratio of both raw materials is 60 to 80% by weight of sugarcane residue 3 and 40 to 20% by weight of dried grass and leaves 4.
It is said that Further, in this case, since the sugarcane residue 3 contains a large amount of starch, the adhesiveness can be obtained without adding a special adhesive agent and the fiber can be solidified into a paper form. In this way, a so-called paperboard-like pulp-like material 5 as an intermediate raw material is obtained.

In molding the seedling-growing pot 1, the pulp-like material 5 is dissolved (dispersed) in water 6 again to form a so-called paper clay-like (muddy) molding material 9. Be seen. At this time, in the present embodiment, the molding material 9 is mixed with the solid paraffin powder 7 and a small amount of the additive 8. Furthermore,
The water 6 has a melting point of the solid paraffin of about 70 ° C.
It is considered hot water. Also, the solid paraffin powder 7
The blending amount of is 100 parts by weight of the pulp-like material 5,
It is set to 10 to 30 parts by weight. As the additive 8, a water-soluble waterproofing agent is mixed in an amount of about 0.2 to 1.1% by weight. Further, if necessary, a water-soluble oil preventive agent may be added, or a pigment for performing desired coloring may be added to the seedling-growing pot 1.

In the present embodiment, in order to manufacture (mold) the seedling-growing pot 1 from the molding material 9, a molding die device 10 as shown in FIG. 4 is used. This mold device 1
As shown in FIG. 4 (a), 0 has a female type (lower type) 12 corresponding to the outer surface of the seedling-growing pot 1 on the bed 11, and an inner surface of the seedling-growing pot 1 on a ram (not shown). It has a male type (upper type) 13 corresponding to.

At this time, although not shown, the female die 1
2 is configured in a mesh shape (porous shape) having a large number of small holes, and has water permeability (a function of discharging water in the molding material 9 downward).
have. Furthermore, female type 12 (or male type 1)
In 3), a convex portion for forming the through hole 1a is provided at the bottom of the seedling raising pot 1. Further, although not shown in detail, the molding die device 10 includes a mechanism for supplying a material (only the nozzle 14 is shown in FIG. 4B) and the molding product 1.
A mechanism for supplying hot air to 5 is also provided.

Returning to FIG. 3, in order to manufacture (mold) the seedling-growing pot 1, the molding material 9 is supplied to the molding die device 10 and press-molded into a pot shape to form the molded product 1.
The molding process P3 for obtaining 5 is performed, and subsequently, the molded product 15
The drying step P4 of heating the to remove moisture is performed.
The molding process P3 and the drying process P4 proceed in the order shown in FIG.

That is, the mold opening state of the molding die device 10 (a)
Then, first, the required amount of the molding material 9 is supplied from the nozzle 14 onto the female die 12 (b). At this time, the molding material 9 is
Since the temperature is about 70 ° C., which is higher than the melting point of paraffin, the solid paraffin powder 7 is in a molten state in the molding material 9. Further, since the female die 12 has water permeability, the moisture in the molding material 9 is discharged to some extent through the female die 12.

Next, the male die 13 is lowered and clamped, and press molding is performed (c). By the pressing force at this time, the pulp-like material 5 is compacted to form a pot-shaped molded product 15, and a certain amount of water is discharged. Further, the through hole 1a at the bottom is also formed. Thereafter, the male die 13 is lifted and opened, and the molded product 15 (female die 12) is formed by the hot air supply mechanism.
For example, hot air of 120 ° C. is supplied (d). As a result, the water content in the molded product 15 is removed (about 70% of the total).
Are removed), and at this time, the molding material 9
The solid paraffin 7 inside will ooze to the surface of the molded product 15.

After that, the molded product 15 is released from the mold, and is naturally dried and cooled (e). As a result, the moisture of the molded product 15 is further removed, and the paraffin is solidified to form a paraffin film on the entire surface of the molded product 15. This paraffin film comes to have a thickness according to the compounding amount of the solid paraffin powder 7 in the molding material 9. In the molded product 15 in this state, the through hole 1a at the bottom portion is formed, but the through hole 1b at the side wall portion is not yet formed. Therefore, returning to FIG. 3, the hole forming step P5 of forming the through hole 1b by, for example, pressing is performed on the molded product 15. As a result, the seedling-growing pot 1 is obtained.

Now, using the pot 1 for raising seedlings, vegetables,
It is possible to manage seedlings (cultivation) of plants such as flowers and flowers. At this time, as described above, the pots 1 for raising seedlings can be set on the seedling-raising tray 2 without any gaps, so that efficient seedling raising (cultivation) is possible. It can be managed and can be automated and mechanized. At the same time, the through holes 1a and 1b formed in the bottom portion and the lower side wall portion of the seedling-growing pot 1 ensure air permeability and translucency to the root portion of the seedling during the seedling raising period. You can prevent looping,
Rooting can be good. Further, after transplanting into the soil later, the root can be extended to the outside through the through holes 1a and 1b.

Since the seedling-growing pot 1 is composed of a pulp-like material 5 made from the residue 3 of sugar cane and dried grass leaves 4 such as rice straw, that is, fiber of a natural (natural) annual plant, In soil for a relatively short period (for example, about 3 weeks
It has been confirmed that it exhibits so-called biodegradability that easily decomposes (corrodes) in 2 months. Further, the paraffin film itself on the surface of the seedling-growing pot 1 is also easily weathered in the soil.

Therefore, after the seedlings are grown in the seedling-growing pot 1, the seedlings may be transplanted as they are without taking them out from the seedling-growing pot 1 when transplanting (fixing) to a field or transplanting into a larger pot. It becomes possible, and after the transplant,
The seedling-raising pot 1 is, so to speak, returned to the soil. As a result, the work efficiency of transplantation can be improved and
You can prevent damage to the roots of seedlings, and moreover,
Since no dust is generated, it is possible to protect the environment. In addition, since the sugar cane residue 3 and the dried grass leaves 4 in the pulp-like material 5 are mixed as described above, the moldability is excellent and sufficient strength and rigidity as a paper-like molded product can be obtained. .

Moreover, unlike the expensive material such as biodegradable plastic, the seedling-growing pot 1 is made from the residue 3 of sugar cane and the dried grass 4 as a material, and these are, so to speak, reused waste. It is an attempt, and it can be obtained at a low price, and thus a product can be provided at a low price. In addition, it does not use forest resources such as wood pulp, and can also conserve resources. By the way, compared to the seedling pot made of biodegradable plastic, it is possible to achieve a significant cost reduction.
Even if compared with a conventional pot for raising seedlings made of polyethylene or the like, it can be provided at the same or lower cost.

Even during the seedling raising (fertilizing) period,
Since soil is contained in the seedling-growing pot 1, there is a circumstance where the decomposition progresses slowly, but according to the research of the present inventor, if the pot of only the pulp-like material 5 having no paraffin film is used, the soil will be soiled. Decomposes in soil for about 3 weeks to 2 months, depending on the quality and temperature (season). In this case, the seedling raising period varies depending on the type of seedling, and for example, the seedling raising period of a vegetable seedling is about 2 months, whereas the seedling raising period of a flower is 3 to 4 months. Therefore, if the seedling-growing pot 1 is decomposed too early (during the seedling-raising period), transplantation may not be performed properly.

On the other hand, by coating the surface of the seedling-growing pot 1 with a paraffin film, the pot 1
Is suppressed, and the decomposition of the pot 1 is started after the paraffin film is weathered in the soil, so that the decomposition period can be delayed accordingly. In this case, the paraffin film is weathered, for example, in about a few months, and the thicker the paraffin film is, the longer the decomposition period can be. According to the research conducted by the present inventor, as shown in FIG. 5, it has been confirmed that, as the thickness of the paraffin film, in other words, the larger the amount of the solid paraffin 7 contained in the molding material 9, the longer the decomposition period. ing. Therefore, for example, the decomposition period can be adjusted by adjusting the blending amount of the solid paraffin 7 according to the type of seedling.

At this time, the compounding amount of the powder 7 of solid paraffin is 1 to 100 parts by weight of the pulp-like material 5.
It is desirable that the amount is 0 to 30 parts by weight, so that an appropriate decomposition period can be obtained. Further, since the paraffin film inhibits water permeability, it also has a function of retaining water in the seedling-growing pot 1 during the seedling-raising period. Furthermore, the surface of the seedling-growing pot 1 is slippery, and there is an advantage that handling is improved when, for example, picking up the pots in a stacked state while fitting them one by one. Paraffin is not harmful to seedlings or the environment.

According to the method for producing the seedling-growing pot 1 of this embodiment, the pulp-like material 5 can be compacted to form the molded product 15 having sufficient strength and rigidity, and the above-described steps can be performed with simple steps. It becomes possible to manufacture the seedling raising pot 1 as described above. Further, in this case, when the through holes 1a and 1b are formed in the seedling-growing pot 1, the through hole 1a is formed at the bottom of the molded product 15 in the molding step, and the molded product 15 is formed after the drying step. Since the through hole 1b is formed in the lower portion of the side wall portion of the seedling raising device, the through hole 1b is rationally formed in the bottom portion of the seedling raising pot 1 and the lower portion of the side wall portion without complicating the mold structure of the molding die device 10. 1a and 1b can be formed.

Further, particularly in this embodiment, the molding material 9 is used to form the paraffin film on the surface of the seedling-growing pot 1.
Since the solid paraffin powder 7 is mixed with the solid paraffin powder and the molding material 9 is heated to a temperature equal to or higher than the melting point of the solid paraffin 7 in the molding step, liquid paraffin is applied to the molded product 15, for example. The paraffin film can be easily formed without providing a separate step of forming the paraffin film such as drying. Solid paraffin 7
Since its melting point is at most about 70 ° C., it does not need to be heated to a particularly high temperature, does not complicate the process or apparatus, and does not require a large amount of energy.

As described above, according to the seedling-growing pot 1 of the present embodiment, unlike the conventional pots made of polyethylene or the like, the work efficiency of transplantation is excellent, and it is possible to contribute to environmental protection, and moreover, it is biodegradable. It is possible to obtain an excellent effect that a sufficient cost reduction can be achieved as compared with a plastic pot. Further, according to the method for producing the seedling-growing pot 1 of the present embodiment, it becomes possible to produce the excellent seedling-growing pot 1 as described above in a simple process.

In the above embodiment, the paraffin film was formed on the surface of the seedling-growing pot 1, but when it is used for seedlings of a short seedling-growing period, it is not necessary to form the paraffin film. It can be cheaper. In addition, the overall shape of the seedling-growing pot 1 may be a circular container shape, a rectangular tube shape, or the like, and the formation positions, numbers, and sizes of the through holes 1a and 1b can be variously changed.
The present invention can be appropriately modified and implemented within the scope of the gist.

[0042]

As is apparent from the above description, according to the pot for raising seedlings of the present invention, the work efficiency of transplantation is excellent, it can contribute to environmental protection, and the cost can be sufficiently reduced. It has an excellent effect. Further, according to the method for producing a seedling-growing pot of the present invention, it becomes possible to produce the above-described excellent seedling-growing pot in a simple process.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention, and is a perspective view of a pot for raising seedlings.

FIG. 2 is a view showing a seedling raising tray (a) and a state where seedling raising pots are set in the tray (b).

FIG. 3 is a diagram schematically showing a production process of a pot for raising seedlings.

FIG. 4 is a diagram showing a state in a molding process and a drying process.

FIG. 5 is a graph showing the relationship between the amount of solid paraffin and the decomposition period.

[Explanation of symbols]

In the drawing, 1 is a pot for raising seedlings, 1a and 1b are through holes, 2 is a seedling raising tray, 3 is a residue of sugar cane, 4 is dried grass and leaves, 5 is a pulp-like material, 7 is a solid paraffin, 9 is a molding material, 1
Reference numeral 0 represents a molding die device, and 15 represents a molded product.

Claims (6)

[Claims] 1. A pot-like material formed from a pulp-like material containing 60 to 80% by weight of sugarcane residue and 40 to 20% by weight of dried grass leaves such as rice straw, straw, reeds and annual grass. A pot for growing seedlings. 2. The container is formed into a substantially octagonal bottomed container shape corresponding to the shape of the seedling raising tray, and through holes are formed in the bottom portion and the side wall portion lower portion.
Seedling raising pot. 3. The seedling raising pot according to claim 1, wherein a paraffin film for adjusting the decomposition period is formed on the surface. 4. A seedling-growing pot made of a pulp-like material containing 60 to 80% by weight of sugarcane residues and 40 to 20% by weight of dry straw such as rice straw, straw, reeds and annual plants. A method for supplying the molding material in a state in which the pulp-like material is dissolved in water to a molding apparatus having water permeability and press-molding into a pot shape, and heating the molded product. A method for producing a seedling-growing pot, comprising a drying step of removing water. 5. A through hole is formed in the bottom of the molded product in the molding step, and a hole forming step is performed after the drying step to form a through hole in the lower portion of the side wall of the molded product. The method for producing a seedling-growing pot according to claim 4, wherein 6. The pulp-like material 1 is used as the molding material.
10 to 30 parts by weight of solid paraffin powder is mixed with 100 parts by weight, and in the molding step,
The method for producing a seedling-growing pot according to claim 4 or 5, wherein the molding material is heated to a temperature equal to or higher than the melting point of solid paraffin.