JP3379815B2 - Compressed molded body for plant cultivation medium and method for producing the same - Google Patents

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a compression molding for plant culture medium with seeds, which is suitable for growing and cultivating flowers, foliage plants, vegetables, etc. by using planters and the like in general households. The present invention relates to a body and a manufacturing method thereof.

[0002]

2. Description of the Related Art It is generally known that a compression molded body of peat moss is used as a base material for food cultivation and seedling raising. Recently, it has become widespread to cultivate flowers and the like at homes using balconies and the like.
In this case, most of the time, plastic planters and the like are used, and ordinary soil is used as the medium, but in recent years artificial soil such as peat moss and coconut fiber has come to be used. This artificial soil is often used by pouring water into the compression-molded body and re-swelling at the time of use. Although a compacted body of this artificial soil in which seeds have been mixed in advance has been devised, a compacted body with seeds for a 65-inch planter with a capacity of 15 liters, which is the mainstream of the currently marketed planters, is currently available. However, it has not been put to practical use yet.

The reason is as follows. That is, in order to prevent germination of the mixed seeds during storage, it is necessary to dry the raw materials such as peat moss until the water content is 20% by weight or less, whereas peat moss has a water content of 20% by weight or less when dried in the sun. Is difficult to dry until
In this case, it is necessary to dry with hot air, but it is impossible to dry a large amount of peat moss in terms of cost. In addition, when the conventional manufacturing process is used, seeds must be mixed in the entire compression molded body, and a large amount of seeds are required.

[0004]

DISCLOSURE OF THE INVENTION The object of the present invention is to provide a plant fiber material and seeds, which have been subjected to a high temperature drying treatment so as to make it difficult to absorb water, on the upper part of the body of a compression molded body having a water content of about 30% by weight. It is intended to provide a compression-molded body for a plant culture medium containing seeds and a method for producing the same, which is capable of forming a two-layered structure by providing a thin layer containing the seeds and in which the seeds do not germinate during storage.

[0005]

The present invention has a layer containing a vegetable fiber material which has been subjected to a high temperature drying treatment and a seed in the upper portion, and has 65 to 85 parts by weight of the vegetable fiber material and 15 to 35 of zeolite.
The present invention provides a compression molding for a plant culture medium, which is composed of a flat plate compression molding including parts by weight and has grooves on the front surface and the back surface. This compression molded product may further contain an alkaline substance for pH adjustment and / or a fertilizer. The present invention further comprises 65 to 85 parts by weight of vegetable fiber material and Zeolite 1.
After blending 5 to 35 parts by weight, the mixture is charged into a molding die, temporarily pressed, and then a mixture of seeds in a high-temperature-dried plant fiber material is charged into a temporarily pressed molding die, Compression molding for plant cultivation medium having a two-layer structure consisting of a seed-embedded layer and a layer below it, which is characterized by being compression-molded by a die having a protrusion in the central portion. A method of manufacturing a body is provided.

Preferred vegetable fiber materials for use in the present invention are peat moss and coconut fibers. It is known that peat moss loses its water absorption as it dries. Especially, as the drying temperature becomes higher, the water absorbency is lost. For example, Canadian peat moss loses its water absorption extremely when the drying temperature exceeds 80 ° C. and never returns to its original state. In the present invention, the drying temperature of 80 to 10 is utilized by utilizing this property of peat moss.
A plant cultivation characterized in that a layer containing peat moss and seeds dried at 0 ° C or higher is provided on the upper part of the main body and integrally molded with the main body to have a two-layer structure, so that seeds do not germinate even when stored in a hot and humid place. A compression molded body for a culture medium and a method for producing the same are provided.

The peat moss used for the main body is usually 50-
Since it contains 60% by weight of water, it is dried until the water content becomes 25 to 35% by weight before compression molding.
Zeolite 15-3 in 65-85 parts by weight of vegetable fiber material
5 parts by weight are blended and uniformly dispersed. In order to adjust the medium pH to, for example, 5.5 to 6.5, an appropriate amount of an alkaline substance such as slaked lime may be added, for example, 1 to 3% by weight of the formulation, if necessary. Further, fertilizer necessary for growth may be added. The peat moss used for the layer in which seeds are mixed has a water content of 6 at a temperature of 80 to 100 ° C.
Dry until ~ 20 wt%. If desired, a suitable amount of zeolite and seeds are added thereto and uniformly dispersed.
In order to adjust the pH to, for example, 5.5 to 6.5, an appropriate amount of an alkaline substance such as slaked lime may be added, for example, 1 to 3% by weight of the formulation, if necessary.
Moreover, you may add the fertilizer required for growth.

In order to produce a compression-molded body for a plant cultivation medium in which the seed-mixed layer according to the present invention is provided on the upper portion of the main body, for example, peat moss 65 to 8 is used as the plant fiber material.
After blending 5 parts by weight and 15 to 35 parts by weight of zeolite, the mixture was charged into a molding die, pre-compressed at a pressure of about 0.1 kg / cm ² , and seeds were uniformly dispersed in dried peat moss in advance. Is charged on the pre-compressed main body of the molding die, and main compression may be performed with a pressing die having a protrusion in the center at a pressure of about 60 to 100 kg / cm ² . In order to carry out this method continuously, a bottom plate is placed on a turntable, a means for charging the compound weighed on the bottom plate into a mold for molding, a means for precompressing the charged compound, It is convenient to use a continuous production apparatus which is equipped with a means for charging the seed-containing composition into a pre-compressed molding die and a means for main-compressing these to form a molded body. The thickness of the seeded layer can be varied depending on the degree of precompression. Generally, about 3 to 10 mm is suitable. The compression molded product for plant cultivation medium of the present invention can be formed in an appropriate shape according to the shape of a planter or the like, but the thickness thereof is generally about 5 to 50 mm. Therefore, it is appropriate that the protrusion of the pressing die has a height of 3 to 25 mm, a bottom width of 3 to 50 mm, and a length slightly shorter than the length of the compression molded body, for example, 50 to 100 mm shorter.

Test Example 1 In the present invention, the plant fiber material is dried at 80 to 100 ° C. to lose its water absorbing ability.
Seeds are mixed with this to prevent germination of seeds while minimizing the influence of water. Here, the relationship between the drying temperature of peat moss and the water absorption was investigated, and the method and results are shown below. Method Peat moss was dried at each drying temperature shown in Table 1 below until the water content was 0% by weight. A glass tube with an inner diameter of 16 mm and a length of 200 mm, which was opened at both ends, was filled with the above-mentioned dried peat moss so that the density was uniform, and the glass tube was placed in a water tank with a depth of 35 mm. Stood vertically. The weight of the entire glass tube was measured after a certain period of time shown in Table 1, and the water absorption amount was calculated. Results The results are shown in Table 1 below.

[0010]

[Table 1] Table 1 Relationship between drying temperature and water absorption of peat moss Drying temperature Peat moss Water absorption (g) (° C) after a certain period of time (g) 1 hour 4 hours 8 hours 30 hours 53 hours 10 days Room temperature 6.56 8.24 16.65 21.80 23.63 23.89 24.41 50 5.85 7.39 16.41 21.53 23.85 24.28 24.78 60 6.28 5.18 13.97 17.91 23.96 24.25 24.62 70 700 5.35 12.01 15.81 21.01 21.53 22.11 801 6.06 0.74 6.90 0.76 6.45 0.74 0.38 0.71 1.48 2.06 5.99 As can be clearly seen from the results in Table 1, 80 to 100 ° C
It can be seen that the water absorption of peat moss significantly decreases when dried at a high temperature.

[0011]

EFFECTS OF THE INVENTION The compression-molded body for a culture medium of the present invention has a layer in which seeds are mixed in the upper part, and the vegetable fiber material used in this layer loses water absorbability due to high temperature drying. , Seed germination can be prevented even if it is stored in a hot and humid place. In addition, since the plant fiber material in the main body which does not contain seed does not cause the problem of seed germination, it can be sufficiently used even if it contains about 30% by weight of water, and the plant fiber material is dried. The cost for is reduced. Furthermore, since the seeds are mixed in the upper thin layer, the amount of seeds can be significantly saved as compared with the case where the seeds are mixed in the entire molded body.

[0012]

The present invention will be described in more detail by the following examples. Example 1 1116 g of peat moss (water content 35% by weight) and 279 g of zeolite were mixed, pre-compressed at a pressure of 0.1 kg / cm ² , and dried to 120 g of peat moss (water content 6% by weight). A mixture of 30 g and 5 g of seeds, which was uniformly dispersed, was placed on top of the pre-compressed product and a pressure of 60 kg / cm ² was applied for 5 seconds to a width of 150 m.
A compression molded body having m, a length of 515 mm and a thickness of 35 mm was produced. At the time of compression molding, the width is 145 mm, the length is 510 mm, and the central portion is 40 mm in width and 410 mm in length along the longitudinal direction.
mm, height 10 mm, ridge length 390 mm, and V-shaped cross-section projection die are used, and the width is 40 mm, length 415 mm, and depth in the central portion of the surface of the compression molded body along the longitudinal direction. A 12 mm groove was provided. When this molded product was put directly into a 65-inch planter and necessary water was put in about 8 liters, it swelled 3 to 4 times in 3 to 5 minutes and could be used as a medium.

COMPARATIVE EXAMPLE 1 108 g of peat moss (water content 35% by weight) and 27 g of zeolite were mixed and put in a circular mold having a diameter of 80 mm to give 0.1.
Zeolite 3 was added to 12 g of peat moss (water content 6% by weight) dried at a temperature of 100 ° C. after precompression at a pressure of kg / cm ^2.
g and 0.5 g of seeds and uniformly dispersed are placed on the above pre-compressed product and a pressure of 60 kg / cm ² is applied to 1
Over a period of 0 seconds, a cylindrical compression molded body having a diameter of 80 mm and a height of 40 mm was produced. For comparison, peat moss (water content 35
(Wt%) 120 g of zeolite was mixed with 30 g of zeolite and 5 g of seeds to similarly produce a single-layer cylindrical compression-molded product having a diameter of 80 mm and a height of 40 mm. These compression molded bodies were left to stand in a place where the humidity was 100% at room temperature, and the germination conditions were examined. The results are shown in Table 2.

[0014]

[Table 2] Table 2 Germination status Elapsed days Two-layer molded body Comparative molded body 6th day No germination 10th day when germination was observed 〃 Germination 15th day 〃 〃 From the results shown in Table 2, according to the present invention It can be seen that, in the case of a molded product having two layers, germination is not observed even after storage for a long period of time.

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Claims (9)

(57) [Claims] 1. A flat compression molded article having a layer containing a plant fiber material which has been subjected to a high temperature drying treatment and a seed at the top, and containing 65 to 85 parts by weight of the plant fiber material and 15 to 35 parts by weight of zeolite, A compression molded product for plant cultivation medium having grooves on the front and back surfaces. 2. The compression molded product for plant cultivation medium according to claim 1, wherein the water content of the vegetable fiber material in the upper seed-containing layer is 6 to 20% by weight. 3. The compression molded body for a plant cultivation medium according to claim 1, wherein the plant fiber material in the upper seed-containing layer is subjected to a high temperature drying treatment at a temperature of 80 to 100 ° C. 4. The compression molding for plant cultivation medium according to claim 1, wherein the plant fiber material is peat moss. 5. The compression molding for plant cultivation medium according to claim 1, further comprising an alkaline substance and / or a fertilizer. 6. A plant fiber material, which is prepared by blending 65 to 85 parts by weight of a plant fiber material and 15 to 35 parts by weight of zeolite, charging the mixture into a molding die, pre-pressing, and then high-temperature drying the seed. Insert the mixed mixture into a mold for temporary compression,
Compression molding for plant cultivation medium having a two-layer structure consisting of a seed-embedded layer and a layer below it, which is characterized by being compression-molded by a die having a protrusion in the central portion. Body manufacturing method. 7. The compression molding for plant cultivation medium according to claim 6, wherein the plant fiber material used in the upper seed-containing layer is dried at high temperature until the water content becomes 6 to 20% by weight. Manufacturing method. 8. The compression molding for plant cultivation medium according to claim 6 or 7, wherein the high temperature drying treatment of the plant fiber material used in the upper seed-containing layer is performed at a temperature of 80 to 100 ° C. Body manufacturing method. 9. The method for producing a compression-molded body for a plant culture medium according to claim 6, wherein the vegetable fiber material is peat moss.