JPS6119430A - Plant growing material - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] Industrial Field of Application The present invention relates to plant growing materials, and in particular, to plant growing materials suitable for hydroculture or hydroponics, in which plants are grown using artificial rocks or the like without using natural soil. It concerns materials.

BACKGROUND ART Indoor gardening in which ornamental plants and the like are cultivated indoors is widely practiced, and examples thereof include potted cultivation using natural soil and hydroponics in which one bulb is cultivated using only water.

Indoor 1i1i As another example, hydroculture has been attracting attention in recent years. This hydroculture is a method similar to hydroponics.

Unlike hydroponics, artificial rocks are used to hold the plants and supply oxygen, and the containers do not have holes in the bottom.

The biggest feature is that transparent 8A and opaque materials are used. Since a container without holes is used, the value as an interior item is higher than that of conventional indoor art.

However, because the water in the container is not discharged in the hydroculture, S rot and water rot occur.

It also has the disadvantage of being susceptible to the growth of algae, which is extremely problematic in plant cultivation. Therefore.

In order to prevent this drawback, particularly root rot and water rot, common ion exchange resins and fats containing enzymes and fertilizer components are used as adsorbents.

On the other hand, in order to supply fertilizer over a long period of time in hydroponics, it has been proposed to use ion exchange resins themselves or ion exchange resins coated with polyurethane (for example, JP-A-67-22/ Publication No. 9j, JP-A-Sho!?-Ko θza/J'
/ issue).

Rot can be prevented even more effectively. Means for Solving Problems in Providing Excellent Plant Growing Materials In view of the above circumstances, the inventors of the present invention have conducted various studies in order to obtain excellent growing materials, and as a result, the present inventors have developed a material that adsorbs fertilizing ingredients. By molding the ion exchange resin and two specific types of polymeric substances in a specific ratio, root rot and water rot are not only suppressed.

The present invention was developed based on the knowledge that it is possible to obtain a product that is excellent in handleability and aesthetic appearance.

That is, 1. The gist of the present invention is to reduce the amount of fertilizing ingredients to Q% of the total exchange capacity.
It is an integrally molded product consisting of the adsorbed ion-exchange IM resin, polyvinyl alcohol, and a water-absorbing polymer, containing 74t-74% by weight of the ion-exchange resin, and having a weight ratio of polyvinyl alcohol to water-absorbing polymer. /10:/~2
:1 to 7:5.

Hereinafter, one aspect of the present invention will be explained in detail.

The type of ion exchange resin used in the present invention is not particularly determined, and cations containing carboxyl groups, sulfonic acid groups, phenolic hydroxyl groups, amino groups, substituted amino groups, y-class ammonium bases, etc. as ion exchange groups replacement resin,
Anion Exchange Resin 1 Although any amphoteric ion exchange resins and mixtures thereof can be used, mixtures of cation and anion exchange resins are preferred for plant growth.

In order to continuously supply fertilizing ingredients to plants, the ion exchange resin adsorbs fertilizing ingredients to 60% or more, preferably 20% or more of its total exchange capacity. The fertilizer components to be adsorbed include N, P, and K necessary for plant growth, as well as trace components such as Oa, My, B, and Fe.
−, No, ”, POj−, f+.

Examples include those adsorbed as ions such as Oa'', My'', B2-, and the like. The content of each component is determined by taking into account the amount required by the plant and whether or not to apply other fertilizers such as liquid fertilizers and foliar sprays during plant growth.

When no other fertilizer is used, the weight ratio of N: F (P, O, converted) to K (K20 converted) is -~3:/~/θ;
Regarding nitrogen, the ratio of nitrate nitrogen to ammonia nitrogen (weight ratio) is generally about λ~3:/. Adsorption of these fertilizing ingredients can be carried out appropriately by a known ion exchange method, but it is also possible to use commercially available ion exchange resins such as N-type, Ni-type 5, P-type, etc.

t*, Bo-17 vinyl alcohol is bintated and an appropriate one is used, and as an example, the degree of polymerization! θ0~λ! θO1
1 saponification degree 30 molti or higher saponification degree 3 points If it is water-soluble, it is a formalized product. Atetatar compound. Polyvinyl alcohol derivatives such as urethane compounds or other polymers may also be mixed. It is possible for the mixture to consist mainly of polyvinyl alcohol.

In the present invention, the water-absorbing polymer refers to a resin that exhibits no water solubility even when immersed in water and highly absorbs water. Any known water-absorbing polymer can be used. Suitable polymers include saponified vinyl ester-unsaturated carboxylic acid (or derivatives thereof) copolymers, ie, acrylic acid. Methacrylic acid. Polyvinyl alcohol modified with unsaturated monocarboxylic acids such as crotonic acid, hasonoesters, salts, unsaturated dicarboxylic acids such as maleic acid, fumaric acid, itaconic acid, or partial or complete esters, salts, anhydrides, etc., and crosslinks thereof (heat-treated products, electron beam or radiation treated products, etc.). A preferred polymer is a saponified maleic acid monoester-vinyl acetate copolymer containing XO, t~30 mol, and a saponification degree of 70.
It is a heat-treated product or an electron beam crosslinked product of a polymer of molten or higher.

Other polymers include polyethylene oxide, polyvinylpyrrolidone, sulfonated polyethylene, saponified starch-(meth)acrylonitrile copolymer, hydrolyzed polyacrylamide, polyacrylate, and starch-(meth)acrylate copolymer. Examples include saponified ethylene-vinyl ester-unsaturated carboxylic acid (or its conductor preventer) copolymer, saponified hydroxyalkyl acrylate-acrylamide copolymer, or crosslinked products or mixtures thereof. It is not limited.

In the present invention, the above-mentioned ion exchange resin, polyvinyl alcohol, and water-absorbing polymer are integrally molded to form a plant growing material. In order to efficiently provide the fertilizing ingredients of the ion exchange resin, the amount of the exchange resin used is 74. % by weight or more, and in order to add meaning to the addition of other polyvinyl alcohol and water-absorbing polymer, the weight should be 9 g or less. In history! 3 to 90% by weight is preferred. In addition, in order to improve the ion exchange ability of the ion exchange resin and maintain the shape of this material, the content of polyvinyl alcohol:water absorbing polymer is 7! by weight!
θ:/~7:j1, preferably 7:/~2:3. In any case, the pH of the water using the product of the present invention is 6. θ～7
It is preferable to adjust each component itself and each component lid so that the ratio becomes 0.2.

The molding method is not limited to percentages, but in general, the ion exchange resin, polyvinyl alcohol, and water-absorbing polymer are mixed in a minimum amount of water to dissolve the polyvinyl alcohol. 7~
After molding into a sheet, film, block, etc. using a casting method, extrusion method, etc. with 100% of water, 0. Dry at about 90-J-0°C to obtain one material of the present invention.
.

wood is obtained. Note that the shape of the material of the present invention is not particularly limited, but a sheet-like shape is preferred from the viewpoint of ease of handling and ion exchange ability.

Action The rice invention materials mentioned above are 1 in the case of hydroculture.
Artificial rocks, vermiculite, etc. These hydrocultures and hydroponics do not use natural soil and grow plants under conditions that do not have buffering capacity. Since the product of the present invention supplies nutrients through dissociation of ions adsorbed on the ion exchange resin, the above-mentioned concentration disorder Fi does not occur.

Note that the material used in the present invention is hydroculture.

Hydroponics is not limited to KIW, and it can also be used as a long-term source of fertilizer when growing plants using normal natural soil.

Effects The plant growing materials of the present invention described above are particularly suitable for hydroculture and hydroponics that do not use natural soil.
Conventionally, problems have arisen in these cases. It suppresses water rot and root rot, and at the same time enables a long-term supply of fertilizer ingredients.

In particular, conventional horticultural ion exchange resins are granular.

In contrast, the product of the present invention is integrally molded using polyvinyl alcohol and a water-absorbing polymer, which improves the flow of water inside the material.
It is considered to have even higher ion exchange ability, has a beautiful appearance, and is easy to handle.

It is an excellent product with the following characteristics.

Hereinafter, the present invention will be explained in more detail with reference to Examples.

Example / Ion exchange resin: polyvinyl alcohol: water-absorbing polymer ratio/θO:/θ:Co (weight ratio) is mixed, mass/4
tt is the diameter! ,! A sheet formed into a circular shape with a thickness of θ and a thickness of about 10 cm was used as the plant growing material of the present invention. In addition.

The above ion exchange resin has a total exchange capacity of approximately 100 cm adsorbed with the following components, and the polyvinyl alcohol has a polymerization degree of 1! θO, degree of saponification! The water-absorbing polymer is monomethyl maleate-containing i゛4t, j morti,
Saponification degree 6. A saponified maleic acid-vinyl acetate copolymer (heat-treated at 730° C. for //θ minutes) from J.Molti was used.

Ion exchange resin adsorption amount (Misaki/material/piece) N
10P (P2O, conversion) 3 K(K2(J I) 10 0a(OaOz) 7 M7(MyO#) 2 S/, j Fe 1., g Mn O0! B θ, l There is a hole in the paper with /. Not on the bottom of y transparent containers.

After laying the sheet-like material above, bricks (
(Cracked bricks) and put day bachia in each container.
The young plants of Camilla were transplanted one by one. After transplanting, each plant was grown by pouring tap water from the bottom of the container up to the lead site and replenishing the lack of water for 7 weeks. At the same time, each building was grown in two containers that were made in the same manner except that the sheet-like material was not used.

Observations made 3 months after transplantation showed that the experimental plots using the material of the present invention were more slender in appearance than the control plots, the leaves were glossier, the leaves were thicker, and the roots were well established. Met. Moreover, after 6 months, growth was good in the experimental plot, but roots rotted and the plants in the control plot were weak.

The fresh weight of plants measured after 3 months and a green meter (manufactured by Fuji Photo Film ■).

The leaf color measured by GMI m) (11! The larger the value, the darker the green) was averaged for each time and shown in Table 1.

Kidney Table 1 Example λ / Put 3θOd of water into a container with a volume of 1, and place a sheet material similar to Example / on the bottom of the container as a test area.
The other two plants were tested without using any materials as controls.

Peperomia caperata young plants were transplanted into each container, and water was supplemented every 7 weeks for hydroponics.

Three months after transplantation, the fresh weight of the plants in the test and control plots was measured, and the condition of the roots and leaves was observed.

The results are shown in Table 1.

First Applicant: Nippon Gosei Kagaku Kogyo Co., Ltd. Agent: Patent Attorney Hase - Others/Names

Claims (2)

[Claims] (1) It is an integrally molded body consisting of an ion exchange resin, polyvinyl alcohol, and a water-absorbing polymer that adsorbs 60% or more of the total exchange capacity of fertilizing ingredients, and the ion exchange resin has a capacity of 74 to 9
A plant growing material containing 6% by weight and characterized in that the weight ratio of polyvinyl alcohol to water-absorbing polymer is 150:1 to 7:5. (2) The water-absorbing polymer is a saponified maleic acid monoester-vinyl acetate copolymer having a maleic acid monoester content of 0.5 to 30 mol% and a saponification degree of 70 mol% or more. The material according to claim 1.