JPH1014407A - Pot for seedling - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a practical seedling pot which can reduce the labor for transplanting by directly transplanting each seedling in each pot as it is and can save the labor for fertilization as well. SOLUTION: This seedling pot 1 is a tapered vessel having an opening 3 at the upper face and a draining hole 2 is bored at its bottom face. The pot 1 is produced by mixing a composite material (a biodegradable material) prepared by dispersing wood powder (woody material) in a poly(vinyl alcohol) (a water soluble macromolecular compound) with a chemical fertilizer containing nitrogen, phosphoric acid and potassium (fertilizer components), and compression- molding the mixture in a mold frame in a molding machine. The biodegradable composite material may be replaced with a formable carbon hydrate, for example, corn starch.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seedling raising pot used for germination, seedling raising, transplantation and the like.

[0002]

2. Description of the Related Art Conventionally, cultivation methods have been practiced in which seeds of vegetation are seeded or seedlings are planted in plastic seedling pots containing soil to grow them. In this cultivation method, when the seedlings grow to a certain extent, they are transplanted to a field or the like. In such transplanting of seedlings, the seedlings are removed from the seedling pot together with the soil, the soil adhering to the roots is further removed, and the seedlings are replanted in the field.

[0003]

However, since the transplanting of the seedlings requires pulling out the seedlings from the pot and transplanting the seedlings, there is a problem that not only the work is complicated but also the root portion is damaged, and the improvement has been made. Is desired. In addition, fertilization must be performed again at the time of transplantation, and the removed seedling pots need to be collected for disposal. In addition, it was extremely hard work due to the large number of items handled. In addition, recent environmental problems have led to attempts to minimize the generation of waste in agriculture as a whole, or to reduce harsh agricultural work. These attempts are no exception in the field of nursery.

On the other hand, various pots for raising seedlings containing a fertilizer component have been developed. For example, Japanese Utility Model Application Laid-Open No. Hei 7-14836 discloses a pot for raising seedlings, which is prepared by baking a molded product mainly composed of rice bran. Although this seedling pot is commercially available, it has a drawback that it is easily broken. Also, Japanese Patent Application Laid-Open No. 7-75448 discloses a method in which a vegetable fiber is used as a container base material, and a coating liquid containing a chemical fertilizer and an adhesive is applied to the container base material and dried. However, there is a disadvantage that it takes time to manufacture and becomes expensive,
Not on the market. In addition, actual opening 58-5065
No. 3 discloses a seedling raising pot formed by molding a kneaded material such as organic fertilizer and sludge, but is not found in the market because it is easily broken and is not suitable for practical use. That is, each of the seedling raising pots disclosed above has a problem that it loses its shape before transplanting the seedlings and does not have a required structural strength, or is too expensive.

[0005] On the other hand, most seedling pots currently on the market are mainly made of plastics such as polyvinyl chloride and polyethylene, which are not decomposed by microorganisms in the soil. Therefore, after transplanting the seedlings, they must be collected as waste.However, the biggest reason that such seedling pots are still used is that they are inexpensive compared to products using other materials. It is mentioned.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and can reduce the labor of transplanting by directly transplanting seedlings stored in a pot. An object of the present invention is to provide a practical seedling raising pot that can save labor.

[0007]

In order to achieve the above object, a seedling raising pot according to the present invention is constituted by molding a mixture of a biodegradable material and a fertilizer component. Here, a biodegradable material refers to a material that is decomposed by the participation of microorganisms in the natural world.
And the “completely disassembled type” in which the material is completely decomposed and disappear
One. However, the biodegradable material used in the present invention is not limited to one of them, and any one may be used.

[0008] The biodegradable material in the above structure is
It is made of a carbohydrate having shapeability.

[0009] The biodegradable material in the above-mentioned configuration is
It is composed of a composite material using a wood-based material as a dispersant and a water-soluble polymer compound as a matrix.

[0010]

Embodiments of the present invention will be described below in detail. Examples of the biodegradable material according to the present invention include a carbohydrate having shapeability and a composite material composed of a woody material and a water-soluble polymer compound. Here, the carbohydrate according to the present invention is preferably one that is easily mixed with a fertilizer component, and further has a property that can be molded into a pot shape, that is, a material having shape-forming properties, such as corn starch and potato starch. It is preferred to use sugars.

[0011] The wood-based material according to the present invention includes:
For example, a relatively fine material such as wood chips or wood chips produced when cutting wood is preferred.
Although the particle size of the wood-based material is not particularly limited, for example, in the case of wood flour, it is preferably about 40 to 80 mesh.
The woody material may be colored in advance in accordance with the color of the seedling pot to be obtained. For example, if a wood-based material is dyed with a black dye and a black pigment is mixed in the matrix, an ebony tone pot for raising seedlings can be obtained, the wood-based material is dyed with a purple dye, and the matrix is black and red pigments. , A rosewood-like seedling pot can be obtained. In addition, if the mixture immediately before molding is foamed with a foaming agent or gas, a seedling-growing pot as a foamed molded body can be obtained.

The water-soluble polymer substance according to the present invention includes:
For example, polyvinyl alcohol, polyols (polyethylene glycol, polypropylene glycol, polytetramethylene glycol) and the like can be mentioned. Such a water-soluble polymer substance gradually dissolves in the soil at the transplantation destination due to the moisture in the soil and weakens the structural strength of the pot itself over time, thereby contributing to the promotion of biodegradation of the wood-based material. In addition, the water-soluble polymer itself is also a bacterium belonging to the genus Pseudomonas putida (polyvinyl alcohol), a bacterium belonging to the genus Flavo bacterium (polyethylene glycol), a bacterium belonging to the genus Corynebacterium (polypropylene glycol), a bacterium belonging to the genus Alcaligenes denitrificans. (Polytetramethylene glycol) and the like. Incidentally, in consideration of an appropriate shape retention force and solubility in water, polyvinyl alcohol having a number average molecular weight of about 20,000 to 90000 and a saponification degree of, for example, 80% or more is preferable. The polyethylene glycol preferably has a number average molecular weight of about 40 to 20,000. The polypropylene glycol preferably has a number average molecular weight of up to about 4000.

[0013] The fertilizer component according to the present invention includes oil cake,
Natural fertilizers such as fish manure, bone meal, and mineral fertilizers; chemical fertilizers such as ammonium sulfate, salt ammonium, superphosphate lime, heavy superphosphate lime, potassium chloride, and potassium sulfate; or compound fertilizers obtained by mixing these at an appropriate mixing ratio. Can be used, nitrogen, phosphoric acid,
Those containing an appropriate amount of the three components of potassium are preferred.
Further, charcoal, ash, and the like having an effect of suppressing the growth of various bacteria, an effect of improving soil neutralization, and other effects may be added.

Therefore, in producing the seedling raising pot of the present invention, first, the biodegradable material and the fertilizer component are sufficiently mixed. Next, this mixture is injected into a mold of a molding machine and compression molded. Thus, the pot for raising seedlings of the present invention can be easily obtained.

Then, when soil was put into the seedling-growing pot manufactured as described above, seeds were sown and cultivated, and the seedling-growing pot was kept substantially in its original form for about one month. When this was directly transplanted into the soil of the field, the seedling-growing pot had completely disappeared after about two months. In other words, seedling and transplantation can be easily performed without producing waste,
Furthermore, the labor and time for applying fertilizer at the time of transplantation can be saved. In addition, the elution of the fertilizer component lowers the structural strength of the seedling-growing pot itself, thereby further promoting the biodegradation of the seedling-growing pot.

[0016]

Embodiments of the present invention will be described below. However, the present invention is not limited to the following embodiments. Embodiment 1 FIG. FIG. 1 is a perspective view showing a seedling raising pot according to the present invention, and FIG. 2 is a side sectional view showing a seedling raising pot according to the present invention. As shown in FIG. 1 and FIG.
Is a tapered container having an upper surface opening 3, and a water passage hole 2 for allowing water or the like to pass therethrough is formed in the bottom surface.

In obtaining the seedling pot 1,
Polyvinyl alcohol (an example of a water-soluble polymer compound) 2
100 g of a composite material obtained by dispersing 80 g of wood flour (an example of a wood-based material) in 0 g and 20 g of a chemical fertilizer (an example of a fertilizer component) containing nitrogen, phosphoric acid, and potassium are mixed well at room temperature. This mixture was placed in a mold of a molding machine and subjected to compression molding at 40 ° C., whereby a seedling-growing pot 1 was completed. The molding temperature is suitably from room temperature to about 100 ° C., but within this range, the drying time of the molded product can be shortened at a higher temperature. So put the soil in the seedling pot 1
When the seeds were sown and cultivated, they germinated and grew as seedlings. The shape of the seedling-growing pot 1 was kept in its original shape for about one month. Subsequently, the seedlings and the seedling pots were transplanted as they were into the soil of the field, and after about two months, the seedling pots had completely disappeared.

Therefore, according to the seedling-growing pot of the first embodiment, there is no need to collect the seedling-growing pot, and the labor for transplanting can be reduced. In addition, since it becomes a fertilizer component in the soil,
It saves the time and effort of fertilizer during transplantation and does not produce waste. In addition, since the pot base is composed of a composite material in which wood flour is used as a dispersant and polyvinyl alcohol is used as a matrix, the wood flour and polyvinyl alcohol are easily eaten by microorganisms. Is released to promote biodegradation. Then, it is possible to mold a seedling-growing pot having an arbitrary appearance from a foamed one to a rosewood-like one.

Embodiment 2 FIG. 100 g of corn starch (an example of a carbohydrate) and 20 g of finely ground oil residue (a natural fertilizer and an example of a fertilizer component) are mixed well at room temperature.
Next, this mixture is wiped with steam at 100 ° C. to form a paste. This was placed in a mold, compression-molded, and dried to obtain a seedling-growing pot having substantially the same shape as that shown in FIGS.

Embodiment 3 FIG. In the same manner as in Example 2 except that 20 g of a chemical fertilizer containing nitrogen, phosphoric acid, and potassium was used instead of the oil residue in Example 2, the same shape as that shown in FIGS. 1 and 2 was used. A seedling pot was obtained.

According to the seedling-growing pots of Examples 2 and 3 described above, the labor for transplanting can be reduced, and the labor for applying fertilizer at the time of transplanting can be omitted. As a result, it has excellent moldability, and has structural strength that does not easily break until it is decomposed. On the other hand, these seedling pots are susceptible to biodegradation, and cornstarch becomes an organic fertilizer after the decomposition. Moreover, it can be manufactured at low cost.

Embodiment 4 FIG. First, 28 g of paper powder shaved as waste by sandpaper of No. 40 is kneaded in advance in the form of paper clay using 4 g of Funori. Next, 4 g of the corn starch powder is sprayed with steam at 100 ° C. to form a paste. And the above-mentioned kneaded material 32 of paper powder
g, 63 g of agricultural soil from which contaminants, trash, etc. have been removed, and 1 g of finely ground oil residue are stirred well at room temperature. Add the corn starch paste to this mixture and mix thoroughly. This was placed in a mold, compression molded at 40 ° C., and dried to obtain a seedling-growing pot having substantially the same shape as that shown in FIGS. 1 and 2.

Embodiment 5 FIG. In the same manner as in Example 4 except that 1 g of a chemical fertilizer containing nitrogen, phosphoric acid, and potassium was used instead of the oil residue in Example 4, the shape was substantially the same as that shown in FIGS. A seedling pot was obtained.

According to the seedling-growing pots of Examples 4 and 5 described above, since the agricultural soil is used as compared with the corresponding ones of Examples 2 and 3, it is extremely inexpensive, and Is easy to adapt to soil. Further, the type of agricultural soil can be appropriately changed according to the variety to which the seedling is applied. That is, there is a difference in the soil preferred by the seedling depending on the type of the seedling. For example, radish is preferably an agricultural soil containing a large amount of sand, while tomato, cucumber, and radish may be ordinary agricultural soil. In addition, since biodegradable paper powder is used, it is inexpensive and has good water retention. In addition, since the paper powder forms a matrix of agricultural soil together with corn starch, a molded product having a certain level of structural strength can be obtained. Incidentally, the molded product obtained using only agricultural soil without using paper powder was too brittle and was not practical. Further, since the paper fibers which have been cut into pieces by sandpaper and the paper fibers have become too short so far can be used as wastes, resources can be recycled.

The pots for raising seedlings in the above embodiments have an example in which one water passage hole is provided on the bottom surface. However, the present invention is not limited to this, and a range in which excessive water leakage or soil leakage does not occur. Thus, for example, two or more water holes may be provided on the bottom surface, or water holes may be formed in the peripheral wall.

[0026]

As described above, according to the seedling-growing pot of the present invention, the seedling and the seedling-growing pot can be transplanted as they are because they are decomposed by the microorganisms in the soil and returned to the soil after transplantation. Therefore, the labor for transplanting can be reduced, and there is no need to collect pots for raising seedlings. In addition, since the seedling pot is used as fertilizer in the soil, the time and effort for applying fertilizer at the time of transplantation can be saved, and resources can be effectively used without producing waste.

When the biodegradable material is composed of a carbohydrate having shape-forming properties, the moldability is excellent,
It has structural strength that does not break easily until it is implanted. On the other hand, it is easily biodegraded, and carbohydrates also become fertilizers after pot decomposition. In addition, since it can be manufactured at low cost, it is extremely practical.

When the biodegradable material is composed of a composite material having a wood-based material as a dispersant and a water-soluble polymer compound as a matrix, the wood-based material and the water-soluble polymer compound are easily eaten by microorganisms. In particular, after the meal of the wood-based material, the wood-degrading enzymes are excreted from the microorganisms to promote biodegradability. Further, in the case of such a configuration, seedling-growing pots having various appearances and textures from foamed ones to rosewood-like ones can be molded.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a seedling raising pot according to the present invention.

FIG. 2 is a side sectional view showing a seedling raising pot according to the present invention.

[Explanation of symbols]

 1 Pot for raising seedlings

Claims (3)

[Claims] 1. A pot for raising seedlings, obtained by molding a mixture of a biodegradable material and a fertilizer component. 2. The seedling raising pot according to claim 1, wherein the biodegradable material is formed of a carbohydrate having shapeability. 3. The seedling raising pot according to claim 1, wherein the biodegradable material is a composite material containing a wood-based material as a dispersant and a water-soluble polymer compound as a matrix.