WO2005115127A1

WO2005115127A1 - Plant growing bed, seedling raising bed and cover soil material for seedling raising bed

Info

Publication number: WO2005115127A1
Application number: PCT/JP2005/009429
Authority: WO
Inventors: Toshiyuki Aiba
Original assignee: Toshiyuki Aiba
Priority date: 2004-05-25
Filing date: 2005-05-24
Publication date: 2005-12-08

Abstract

A plant growing bed produced by mixing 100 pts.wt. of non-wood fibers composed of bamboo fibers having undergone expression processing to fibers and poaceous plant fibers from reed, straw, pampas grass, etc. with 30 to 70 pts.wt. of palm fibers having undergone crushing processing and 1 to 3 pts.wt. of vegetable starch, further adding thereto an appropriate amount of water enough to cause the starch to absorb the same and thereby generate viscosity; effecting agitation and kneading of the mixture; pressuring the kneading product so as to shape into an arbitrary thickness and configuration; and drying the shaped product. Further, there is provided a main body of seedling raising bed produced from bamboo fibers, poaceous plant fibers and palm fibers together with an intra-bed water retention antiseptic, and provided a cover soil material for seedling raising bed produced from a mixture of these components loaded with a small amount of soil.

Description

Specification

Plant breeding beds and nursery beds and soil coverings for nursery beds

Technical field

The present invention relates to a plant growing bed that can be used for sowing plant seeds to grow seedlings and, in the case of small vegetables, to grow them as they are until the harvesting period, and more particularly to a biodegradation treatment. The present invention relates to a nursery bed comprising a nursery bed covering material formed mainly of non-wood-based fibers and a nursery bed body in which the above-mentioned plant growing bed is modified.

Background art

[0002] At present, common containers used for raising seeds of this type include a black resin pot formed by bulging a thin synthetic resin sheet and a resin or element made by injection molding. Roasted flower pots and the like are used, and seeds for seedlings are placed in these pots for seeding. In these common seedling pots, the root soil must be taken out from the pot at the time of planting after the seedlings are planted and planted. Yes, and may delay subsequent growth.

[0003] Therefore, as a means for solving this problem, the growth of seedlings is continued only by forming the seedling pot material itself from a biodegradable material and burying the pots in the settled land at the time of planting after seedling growth. Raising seedling pots have been proposed. In addition, a biodegradable nonwoven fabric for raising seedling pots as a material sheet that can be used in this way has been proposed. On the other hand, it has also been proposed to use a solid medium formed by compressing and molding plant fibers and viscous materials, etc., in place of soil to be loaded into individual pots that are used as seedling trays by connecting many seedling raising pots! Puru. See the following patent documents.

Patent Document 1: Japanese Patent Application Laid-Open No. 2002-315443

Patent Document 2: Japanese Patent Application Laid-Open No. 11-269753

Patent Document 3: JP-A-2000-116233

[0004] A nursery bed for rice widely used at present has a structure in which a usual soil layer or a mat for sowing is placed in a well-known seedling raising box, and soil is covered after sowing. It is frequently used. The most widespread mats are made from chemicals, A foamed or fibrous synthetic resin molded into a predetermined shape such as a sheet is used.

[0005] A nursery bed that also has such a raw material strength requires troublesome removal and disposal of the remaining bed after the seedling raising. Repeated burial in the soil during rice planting to save labor will hinder subsequent rice cultivation. The debris that has been removed does not rot for a long time even if it is covered with land on a landfill, and if incinerated, it emits harmful gases, pollutes the environment and raises pollution problems. Therefore, the present applicant has already developed and proposed a kind of seedling mat and container using a waste material generated in an open space or the like, and also using a natural substance as an additive or a mixture. See the following patent documents.

Patent Document 4: Japanese Patent Application Laid-Open No. 2004-187617

Patent Document 5: JP 2004-215550 A

Disclosure of the invention

Problems to be solved by the invention

[0006] The seedling pots of the above-mentioned references 1 and 2 require cumbersome work to load an appropriate amount of soil at the time of sowing, as in the past, and the solid medium of reference 3 requires water supply similarly to the soil. As a result, the shape of the pot collapses and adapts to the shape of the pot, but a separate pot is required to replace the soil.

[0007] The present invention provides a fiber material which is excellent in biodegradability especially in the ground, in order to solve the problems of the conventional seedling pots and the medium thereof, in addition to the first viewpoint. Currently, it is in the natural world! It has been left unutilized, and is mainly made of non-wood-based natural fibers such as bamboo fibers, grass fibers such as reeds and straws and thin grasses. It is also mixed with palm fiber, which is also highly biodegradable.When used on the ground, it does not collapse for a long time due to water supply. The purpose of this project is to provide a plant breeding floor that can promote the rapid and vigorous growth of seedlings without hindering the growth of seedlings that can easily be soiled.

[0008] In addition, the present invention should further improve the proposals according to the above-mentioned references 4 and 5 in a second aspect.

By using inexpensive and biodegradable recycled materials or plant materials that are unused resources, mass production is possible, while preventing the deterioration and destruction of nursery beds by bacteria and fungi. It is also useful for soil improvement, where it is biodegraded and does not generate harmful substances even when discarded and left in the soil as it is, leaving no harmful substances, and irrigated after covering the soil to fill the space between seeds. It is a further object of the present invention to provide a nursery bed that protects the seeds that have been washed away and prevents them from migrating, and that has the effect of promoting the normal development of germs and radicles during germination.

Means for solving the problem

[0009] The present invention provides a novel plant breeding bed that achieves the above object in the first aspect. In the first mode, 100 parts by weight of non-wood fiber composed of bamboo fiber fiberized by crushing or the like and grass fiber such as reed-straw-thin is used to crush palm treated. 30 to 70 parts by weight of fiber and 1 to 3 parts by weight of vegetable starch are added, and at the same time, an appropriate amount of water sufficient for the starch to absorb water and generate viscosity is added, and the kneaded mixture is pressurized and optionally kneaded. The thickness and the shape are formed and dried.

[0010] In the second embodiment, an appropriate amount of a fungicide and a water preservative are added to the kneaded material.

[0011] In a third aspect, the above-mentioned kneaded material is supplemented with a plurality of appropriate amounts of fertilizers having different efficacy periods.

[0012] The present invention provides a novel soil covering material for nursery beds that achieves the above further object in the second aspect. In the first embodiment, the covering material comprises a non-wood fiber composed of finely divided bamboo fiber, grass fiber such as reed straw, thin grass, etc .; A mixed material comprising a preservative and a small amount of soil is formed into a predetermined thickness and then dried.

[0013] In a second embodiment, the mixed material for forming the covering material is obtained by further adding one or more components of a fungicide and a water purifying agent.

[0014] In a third embodiment, a strong covering material is combined with a nursery bed main body to constitute a nursery bed having an extremely novel configuration. This nursery bed body is obtained by further modifying the plant breeding bed according to the first aspect, and specifically, is subjected to crushing treatment with non-wood fibers of grasses such as bamboo and reed. It is a mixture of palm fiber and a small amount of water preservative in the floor, dried to a specified thickness. In the same manner as described above, the covering material is subjected to crushing treatment with non-wood fibers composed of finely divided bamboo fiber and grass fiber such as reed 'straw' thin. It is a mixture of palm fiber, a small amount of preservative, and a small amount of soil, which is molded thinner than the nursery bed and dried.

[0015] In a fourth embodiment, the mixed material for molding the nursery bed body further comprises a fungicide, a nursery water purifying agent, and a small amount of fertilizer added with at least one or more components having a power. The above-mentioned mixed material for molding a soil covering material is obtained by further adding one or more components of a fungicide and a water purifying agent.

The invention's effect

[0016] As described above, in the process of producing a plant breeding bed that also provides the first aspect of the present invention, the weight ratio is based on the non-wood-based main component consisting of bamboo and gramineous plants. Approximately 50% of palm fiber is added, starch is further added, water is supplied, and the mixture is uniformly kneaded, so that the starch absorbs and softens to form a paste, which acts as a binder. This kneaded material is pressed into an appropriate thickness to form a thick plate, and then punched into an arbitrary pattern such as a round, square, star, or heart shape using a punch, and then dried. This is the breeding floor. This nursery floor retains its original block shape for a long period of time without being deformed by watering or irrigation during use on the ground, so that it can function as a nursery soil and as a nursery container. To conduct.

[0017] After raising the seedlings, the soil can be buried in the soil as it is, and the soil fungus decomposes the natural fibers of the body in a short period of time to form soil. There is no need to break through the pot wall. In other words, the seedlings naturally extend into the surrounding soil without any hindrance, and the seedlings continue to grow rapidly.

[0018] The plant growing bed of the present invention absorbs and retains about 5 times the volume of water, so that it is not necessary to supply water as frequently as a commercially available soil or a field soil. Does not happen.

[0019] Furthermore, by supplying water after sowing, the natural fibers and starch constituting the breeding bed self-ferment to slightly increase the temperature inside the block body. After transplanting into the soil, the temperature is again increased due to natural decomposition by fungi. As a result, there are advantages of promoting the growth of seedlings and early flowering.

[0020] If a fungicide or a preservative is added, the generation of mold and the decay of the supplied water can be prevented or at least delayed, and the roots of the seedlings can grow smoothly. [0021] As in the third aspect described above, if an immediate-acting fertilizer is mixed with a slow-acting fertilizer or a slow-acting fertilizer and contained in a growing bed, fast-growing crops such as leafy vegetables and radish radish can be obtained. There is no need for underground transplanting and topdressing. Since harvesting is possible only with water supply, inexperienced people can grow plants even in soilless environments such as the veranda of an apartment complex.

The second aspect of the present invention The provided soil covering material for nursery beds having the above-described structure is mat-shaped when irrigated on a group of seeds sown on the surface of the nursery bed main body and retains necessary moisture. It breaks and fills the gaps between seeds, guarding the offspring and preventing them from spilling or moving. While absorbing the water kept clean by the preservatives, each child grows its germ and radicle smoothly. If a fungicide is added, it can also prevent the occurrence of seedling disease in cooperation with the preservative. The nursery beds and soil covering material of the present invention eliminate the need for residual floor treatment after use, thereby realizing labor saving in agricultural work.

[0023] All the work after seeding can be mechanized simply by placing the soil covering material whose structure and dimensions are standardized on the nursery bed body in the nursery box and irrigating it. There is no lack of seeds after germination due to seed flow, and the efficiency of various operations with rice transplanters and the like is improved. The aerial part of the seedlings grows in a well-balanced manner with the roots without lengthening, and there is no danger of lodging due to the wind. This contributes to improving the efficiency of agricultural work and increasing the yield.

[0024] This soil covering material can be covered with ordinary soil in a nursery box, and it can be expected that the soil covering work will be uniform and the efficiency will be improved.

[0025] In the third and fourth aspects of the second aspect, the seedling bed main body and the covering material as described above are combined, and a seed group is used between the two. Therefore, the soil covering material exhibits the above-mentioned advantages, and the nursery bed body also exhibits the advantages of the plant breeding floor according to the first aspect. In addition, if a large number of root induction holes are formed in the nursery bed main body, the seedlings of the seedlings will grow evenly in all directions, ensuring a perfect implantation state. Efficiency is also improved.

[0026] The seedling raising bed body and the soil covering material of the present invention are biodegraded in seedlings in 40 to 45% of their original volume in 30 to 40 days, and disappear in the soil within about 20 days after seedling planting. Eliminating the need for troublesome removal and treatment of remaining beds is no longer necessary, and works as nutrients in the ground, and there is no problem of environmental pollution. Brief Description of Drawings

FIG. 1 is a perspective view showing an example of a plant growing bed according to a first embodiment,

[FIG. 2] FIG. 2 is a perspective view of another example.

[FIG. 3] FIG. 3 is a perspective view of another example.

[FIG. 4] FIG. 4 is a perspective view of still another example.

FIG. 5 is a perspective view of a plant growing floor according to a second embodiment,

FIG. 6 is an exploded perspective view of a nursery bed according to a third embodiment,

[FIG. 7] FIG. 7 is a cross-sectional view showing one stage during use of the nursery.

[FIG. 8] FIG. 8 is a cross-sectional view showing another stage during use of the nursery.

[Fig. 9] Fig. 9 is a cross-sectional view showing another mode of use of the covering material constituting the nursery bed as a fourth embodiment.

BEST MODE FOR CARRYING OUT THE INVENTION

[0028] For the fungicide of the plant breeding floor according to the first aspect, non-wood fibers such as the bamboo fiber and reed 'straw' thin, as well as palm fiber, which are desirably boiled, are desirable.

[0029] As the fungicide, it is desirable to use pepper leaves, fruits, husks, etc., to use pepper fruits, leaves, stems, seeds, etc., or to use a mixture of both.

[0030] Examples of the water preservative include charcoal powder, bamboo charcoal powder, a mixture thereof, wood vinegar solution, bamboo vinegar solution, a mixture thereof, slaked lime, silica (amorphous nitric acid silicate) and the like. use.

[0031] Fertilizers include mixed chemical fertilizers containing nitrogen 'phosphoric acid' as a main component, dried chicken dung, dried cow dung, dried or organically treated garbage, fish meal, bone meal, shell powder, and other natural fertilizers. If several types are selected and mixed with the material of the breeding floor, topdressing is not necessary and the growth of seedlings can be promoted.

[0032] If appropriate combinations of immediate-acting, slow-acting and slow-acting fertilizers prepared from these fertilizer materials are used, not only for raising seedlings, but also for growing chisha, lettuce, and spinach that can grow and harvest relatively early. No additional fertilization is required for cultivation of leafy vegetables such as grasses, root vegetables such as radish and carrots, small fruit vegetables such as fir tomatoes and eggplants, or annual flowers.

[0033] The nursery bed body is a further modified version of the plant growing bed according to the first aspect, and the bamboo material that is used as a thinning material, a twig, or the like as a component of the covering material is a reed or the like. Likewise Use raw or boiled. Palm fiber is used after being broken. The weight ratio of these fibers in the nursery bed body is 5-10% for bamboo, 25-52% for fibers such as reeds, 40-60% for palm fibers, and 1-5% for water preservatives. The mixing ratio by weight in the soil covering material for nursery beds is as follows: fine powdered or boiled bamboo 4 to 9%, reeds and the like treated 51 to 24%, palm fiber 39 to 58%, water preservative 1 ~ 5%, soil 3 ~ 4%. The seedling bed body and the soil covering material to be stored in the conventional nursery box have the same external dimensions as each other, and the latter shall be as thin as a normal soil covering layer. A large number of root guide holes are provided in the nursery bed body to prevent the movement of seeds and to evenly distribute the seeds on the surface of the body.

[0034] To the fiber component of the nursery bed main body and the soil covering material, at least one of a fungicide, a nursery water purifying agent, and a fertilizer is added in addition to the water-retaining preservative in the floor. Preservatives for purifying floor occlusion water are charcoal, bamboo charcoal, or a mixture of both, pulverized and added at 3 to 5% by weight. In order to prevent seedling lesions due to the above-mentioned fiber component molds, leaves, fruits, rind, etc. of palm pepper, etc. are dried and ground to about 200 m or dispersed in water at a concentration of about 30% and added to palm fiber to add 3 to 7% by weight. I do. To the reed material, pepper is dried and crushed to about 200 μm or dispersed in water at a concentration of about 30%, and 3 to 7% by weight is added. The seedling water purifying agent for purifying the water supply and preventing the lesion is added with 2 to 5% by weight of wood vinegar or bamboo vinegar. Fertilizer, nitrogen fertilizer and phosphate fertilizers and potassic 1: 1.6: to 0.01-0.02 ^_0/0添Ka卩those formulated in 1 ratio.

The above-mentioned soil covering material is put on the main body to constitute a nursery bed. However, it may be covered on the seeded soil in the nursery box. Since the soil covering material is softened by the watering and is filled with the surface of each grain and between the grains of the fine-grained soybean seed, the surface of the main body has an appearance as if covered with soil.

The mat-shaped main body of the nursery bed in the third embodiment is a mat-like material obtained by molding and drying a material such as bamboo, reeds and the like, crushed palm fiber, crushed charcoal as a water preservative, and bamboo charcoal. It is a body and may have a number of root guide holes on its surface. The mat-like covering material of the nursery bed has the above-described configuration in the first and second modes.

[0037] In the fourth embodiment, the soil covering material for the nursery bed contains the antifungal agent, the seedling water purifying agent and / or the fertilizer as described above, but the details are not described again.

[0038] In use, the nursery bed main body is placed in a nursery box, and the seedlings are sufficiently irrigated and seeded, covered with a covering material and irrigated again. Cover the seeding surface covered with the soft soiled covering material You don't have to. The water retained by the matted nursery is kept clean with the preservatives during germination and growth. The above-mentioned fungicide does not generate mold which inhibits seedling growth on the main body and the soil covering material. The purifying agent, such as wood vinegar, for purifying seedling raising water, in combination with these preservatives and fungicides, absorbs the fertilizer and prevents the growing seedlings from causing lesions.

[0039] In the case of rice, the nursery bed of the present invention sufficiently develops radicles to prevent lack of seedlings, and the seedlings have a good balance between roots and aerial parts and do not become prolonged. As described above, there are advantages such as early dissolving in soil and fertilizing, which will not be described again.

Example

The first embodiment shown in FIGS. 1 to 4 is a small plant growing floor 10 suitable for school teaching materials. The example in Fig. 1 is a star in plan view, with a circumscribed circle diameter of about 8 cm and a thickness of 2.5 cm. The example in Fig. 2 has an oblong shape in plan view, a major axis of about 8 cm, and a thickness of 3 cm. The example in Fig. 3 is a heart shape in plan view with a major axis of about 8cm and a thickness of 5cm. These are obtained by punching a flat plate material having a desired thickness with a die made of a metal strip. The example in Fig. 4 is a small bowl-shaped truncated cone with an upper surface diameter of 8cm, a lower surface diameter of 6.5cm, about 8cm, and a height of 8cm, and is formed by compressing a breeding floor material inside a mold of the same shape.

[0041] Because it is a school teaching material, it is used by setting the enclosed seeds in cuts and small holes on the surface of the breeding floor in advance, as well as the ability to embed plant seeds in the material in advance.

The second embodiment shown in FIG. 5 is a large commercial breeding floor 10 having a rectangular shape in plan view and having a long side of 80 cm, a short side of 40 cm, and a thickness of 80 cm. In addition to fertilizers composed of slow- and slow-acting components containing nitrogen and phosphoric acid (potassium), fertilizers such as dried chicken dung, cow dung, fish meal, bone meal, and shell powder are added to these materials. It is. Leafy vegetables and root vegetables do not require topdressing from seeding to harvesting.

In both examples, 40 parts (by weight, hereinafter the same) of a fiber material obtained by boiling and compressing bamboo into chips using a cutting machine, and 60 parts of a fiber material obtained by pressing and cutting grasses such as reeds and thins To 100 parts of non-wood fiber consisting of the following, 50 parts of similarly pressed and cut palm fiber material was added as the main component. To the main component, 2 parts of vegetable starch, an appropriate amount of chili pepper as a fungicide, and charcoal and bamboo charcoal powder as water preservatives, as well as wood vinegar and bamboo vinegar are added in appropriate amounts. An appropriate amount of water was added to the raw material mixture, and the mixture was kneaded, formed into an arbitrary shape, and dried to obtain a plant growing bed 10. [0044] The breeding bed 10 functions as a nursery soil and nursery pot. When the plant grows to a size suitable for transplantation while replenishing water, if the plant is buried directly in the soil, the plant continues to grow.

[0045] The above-mentioned chemical fertilizer may contain an immediate-acting component in addition to a slow-acting and slow-acting component.

By mixing fertilizer components having different efficacy periods in this way, it is possible to cultivate on the same breeding bed 10 without the need for transplanting from seeding to harvesting.

[0047] In the third embodiment shown in Figs. 6 to 8, the soil covering material 1 for nursery beds is provided alone, or the material and the main body 2 are provided as a nursery bed. The first sample of soil covering material 1 is 10% crushed bamboo material (% by weight, the same applies hereinafter), 30% reed material, 51% crushed palm fiber, and 5% ± 4% crushed charcoal with water preservatives in the floor After the compression molding, the mixed material was dried to obtain a mat-like and porous covering material 1 as shown in FIG. This soil covering material 1 is thinner than the body 2 to be described later. The outer dimensions are 570mm X 275mm X 4mm and the weight is lOOgr.

[0048] In the second sample of the soil covering material 1, the ground bamboo material 10% and the reed material 30% were also boiled similarly to the ground bamboo material 10%. It is used as a basic material in addition to the proportion of the first sample. Based on this material, 5% of ground charcoal is added, and as a fungicide, palm fiber is added with pepper leaves, berries, peels, etc., and reed material is added with 3% of pepper. These fungicides are prepared by grinding Japanese pepper and the like to about 200 m after drying, or dispersing and mixing in water to a solid concentration of about 30%. In addition, the above materials are 2% of wood vinegar as a seedling water purifier and 0.02% of fertilizer containing nitrogen, potassium, and phosphoric acid in a ratio of 1: 1.6: 1, respectively, and are supplemented with calyx.

Next, in the third embodiment also shown in FIGS. 6 to 8, a description will be given of the main body 2 which should constitute a nursery bed together with the covering material 1 of the first sample. The first sample of the main body 2 was made by compressing and molding a mixed material consisting of 10% ground bamboo material, 30% reed material, 55% broken palm fiber, and 5% ground charcoal as a water-retaining preservative in the floor. The main body 2 is a mat-like and porous body as shown in FIG. On the surface of the main body 2, a number of root guiding holes 21 are formed. FIG. 7 shows one stage of the nursery bed comprising such a main body 2 and the above-mentioned soil covering material 1 during use. In the figure, reference numeral 3 denotes a seed group, and reference numeral 5 denotes a nursery box. Fig. 8 shows the next stage during use, in which the soil covering material 1 has been deformed by irrigation. The external dimensions of the main body 2 are 570mm X 275mm X 14mm and the weight is 300gr. In this example, both soil covering material 1 and body 2 contain fertilizer. V, N, so fertilization in use is desired.

[0050] In the second sample of the nursery bed body 2, 9% of bamboo material and 28% of reed material were both boiled, and 50% of broken palm fiber and crushed charcoal of a water-retaining preservative in the floor were added to the second sample. It is used as a basic material in addition to one sample. To this material, a further 4.5% of ground charcoal is added, and as a fungicide, palm fiber is added with peppercorn and reed material is added with 2.5% of pepper. These fungicides are obtained by drying Japanese pepper and pulverizing it to about 200 / zm. In addition, 3.5% wood vinegar as a seedling water purifier and 0.02% fertilizer containing a nitrogen, potassium, and phosphoric acid in a ratio of 1: 1.6: 1 are added to the above materials. A nursery bed is formed together with the cover material 1 of the second sample. The root guide hole 21 is the same as the main body of the first sample.

The fourth embodiment shown in FIG. 9 is an example in which the soil covering material 1 for nursery beds in the third embodiment is used by covering the nursery soil 4 made of ordinary soil. The material has the above-mentioned effects.

[0052] In any of the above-mentioned soil covering materials 1 for nursery beds, it is desirable that the soil is additionally mixed by about 4%.

It is needless to say that appropriate modifications can be made to the above examples and samples within the scope of the present invention.

Claims

The scope of the claims

[1] Non-wood fiber consisting of pressed fiberized bamboo fiber and grass fiber such as reed 'straw' thin, 100 parts by weight, and 30 to 70 parts by weight of crushed palm fiber , 1 to 3 parts by weight of vegetable starch, and simultaneously adding an appropriate amount of water sufficient to cause the starch to absorb water and produce viscosity, and knead the mixture to form a desired thickness and shape by pressing. , A plant growing floor obtained by drying.

[2] The kneaded product according to claim 1, further comprising an appropriate amount of a fungicide and a water preservative.

The plant growing floor according to 1.

3. The plant breeding floor according to claim 1, wherein the kneaded material is obtained by further adding a plurality of appropriate amounts of fertilizers having different potency.

[4] Non-wood fiber consisting of finely divided bamboo fiber, grass fiber such as reed 'straw' and thin grass, broken palm fiber, a small amount of preservative, and a small amount of soil A soil covering material for nursery beds, which is formed by molding a mixed material consisting of to a predetermined thickness and then drying it.

[5] The soil covering material for nursery beds according to claim 4, wherein the mixed material further comprises one or more components of a fungicide and a water purifier.

[6] A mixed material consisting of non-wood fibers of grasses such as bamboo and reeds, crushed palm fibers, and a small amount of water preservative in the floor is dried to a predetermined thickness and dried. Nursery bed body (2), non-wood fiber consisting of finely divided bamboo fiber, grass fiber such as reed 'straw' thin, etc., crushed palm fiber, and a small amount of preservative And a soil covering material (1) obtained by forming a mixed material comprising a small amount of soil into a thinner than the nursery bed body (2) and drying it.

[7] The nursery bed body (2), wherein the mixed material for molding further comprises at least one or more components selected from a fungicide, a seedling water purifying agent, and a small amount of fertilizer, 7. The nursery bed according to claim 6, wherein the soil covering material (1) is a mixture material for molding further added with one or more components of a fungicide and a water purifier.