JP2000044728A - Carboxymethylcellulose composition for plant cultivation, its preparation and use thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a biodegradable carboxymethylcellulose which can continuouly supply water to a cultivating plant for a long period as well as has excellent water- and shape-holding properties. SOLUTION: This carboxymethylcellulose composition comprises carboxymethylcellulose, an aluminum metal salt and water, and in this gel composition, (1) a degree of etherification of the carboxymethylcellulose is 0.5-1.6, (2) an ion equivalent ratio of aluminum to carboxymethylcellulose is 0.1-1.5, and water content is 30-99.9 wt.% on the basis of the total weight of the gel composition.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a carboxymethylcellulose gel composition for growing plants, and more particularly, to a carboxymethylcellulose gel composition having excellent water retention and shape retention properties and capable of supplying water to cultivated plants continuously for a long period of time. The present invention relates to a biodegradable carboxymethyl cellulose gel composition for growing plants.

[0002]

2. Description of the Related Art Conventionally, in order to supply water to cultivated plants indoors and outdoors, watering devices such as sprinklers and showers,
An irrigation device in which a water supply pipe is embedded in soil is used. However, there is a problem that the sprinkler and the irrigation device require a large amount of cost because they require large-scale facilities and construction. Further, even after the installation, there is still a problem in terms of economy and labor in terms of the operation cost and maintenance cost of the apparatus. Furthermore, there is a problem that it is difficult to change the specification according to a change in use conditions after installation. On the other hand, in recent years, in order to streamline agricultural and horticultural work and increase crop sales,
Intensive cultivation of seedlings and transplantation of the cultivated seedlings by machine have become popular. However, mechanical transplantation has the drawback that when cultivating seedlings are transplanted together with cultivation (cultivation cultivation), root cultivation collapses and root damage is likely to occur, and improvements in this respect have been strongly demanded.

[0003] In order to solve such a problem, a water supply material intended to be easily supplied by simply disposing it in the rhizosphere of a cultivated plant requiring water supply, instead of a watering device or a watering device. Development and development of water supply materials to obtain soil that is difficult to collapse have been carried out. For example, JP
JP-86803 describes a water-absorbing polymer preparation, and such a water-absorbing polymer preparation is applied to a plant by sowing or mixing with the soil during plant sowing, transplanting, or growing. It is disclosed that plants can be supplied with water by spraying and then keeping the water by spraying. JP-A-7-99832 discloses carboxymethyl cellulose (generally having an average degree of polymerization of 500 to 2).
000) and water-soluble polyvalent metal salts such as copper salts, aluminum salts, and iron salts. A plant cultivation medium (water-supplying material) comprising one or more aqueous gel-forming materials of sodium alginate, carboxymethylcellulose and peritin is described.
However, in these water-supplying materials, there is a problem that the water-absorbing polymer remains in the soil after use and contaminates the environment. The water-soluble material was not satisfactory.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide a biodegradable carboxymethylcellulose for growing plants, which has excellent water retention and shape retention properties and can supply water to cultivated plants for a long time and continuously. It is to provide a gel composition.

[0005]

The present inventors have paid attention to the fact that the metal salt of carboxymethylcellulose forms a gel-like substance holding water molecules between the molecules, As a result of diligent studies on the shape retention properties, the aluminum metal salt of carboxymethyl cellulose has excellent water retention and shape retention properties at a specific aluminum / carboxymethyl cellulose ratio (ion equivalent ratio), and has such a gel. When placed in the soil, the substance is biodegraded by bacteria in the soil, and the cross-linking structure of the carboxymethylcellulose gel is disrupted. As a result, the water contained between the lattices is gradually reduced over a long period of time. It was found to be released, and the present invention was completed.

That is, the present invention relates to a carboxymethylcellulose gel composition for growing plants comprising carboxymethylcellulose, an aluminum metal salt and water, wherein (1) the degree of etherification of carboxymethylcellulose is 0.5 to 0.5. 1.6, (2) The ion equivalent ratio of aluminum to carboxymethylcellulose in the gel composition is:
0.1 to 1.5, (3) a carboxymethylcellulose gel composition for growing plants, wherein the content of water is 30 to 99.9% by weight based on the total weight of the gel composition. To provide.

[0007] The present invention also relates to a method for preparing carboxymethylcellulose in an amount of 30 to 99% based on the total weight of the gel composition.
It is dissolved or dispersed in water in an amount of 9% by weight, and then the resulting aqueous solution or dispersion has an ion equivalent ratio of aluminum to carboxymethylcellulose in the gel composition of 0.1 to 1.5. It is intended to provide a method for producing the above-mentioned carboxymethyl cellulose gel composition for growing plants, which comprises adding and mixing such an amount of an aluminum metal salt.

Further, the present invention provides that the above gel composition is contained in a container having one or a plurality of openings formed at the bottom or at the bottom and the side wall of the bottom.
The method for using the gel composition, which is buried in the soil of the rhizosphere of the cultivated plant, the gel composition is placed on the soil surface of the rhizosphere of the cultivated plant or mixed in the soil. Method for using the gel composition, wherein the gel composition is embedded
And drying and crushing the gel composition, arranging the obtained crushed material in the rhizosphere of a cultivated plant, and then spraying water to retain the crushed material, It is intended to provide a method of using.

In the present invention, the content of carboxymethylcellulose is determined based on the total weight of the gel composition.
0.05 to 5.0% by weight, the gel composition, a gel strength modifier, a soil conditioner, a plant active agent,
The above gel composition, characterized by containing one or more selected from the group consisting of insecticides and fungicides, a flat rectangular parallelepiped, a disk, a sphere, a solid shape such as a granule, The present invention also includes a gel composition and the above-mentioned gel composition, wherein the solid form has a multilayer structure, and the ion equivalent ratio of aluminum to carboxymethylcellulose in each layer is different.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail. (Carboxymethylcellulose) The carboxymethylcellulose (hereinafter, also simply referred to as CMC) used in the present invention is usually a lithium salt, a sodium salt, a potassium salt, a rubidium salt of carboxymethylcellulose,
Cesium salts and mixtures thereof can be mentioned. Preferably, it is a sodium salt.

The CMC used in the present invention has a viscosity at 25 ° C. of a 1% by weight aqueous solution of CMC (hereinafter simply referred to as 1% by weight).
It is called viscosity. ) Is usually 10 to 10,000 mPa · s
It is assumed that. When the 1% by weight viscosity is less than 10 mPa · s, the gel composition has insufficient shape retention. Also,
If it exceeds 10,000 mPa · s, a uniform gel composition cannot be formed due to low fluidity at the beginning of the gelation reaction. Excellent shape retention is due to the C content in the gel composition.
It can also be obtained by increasing the content of MC, but is economically disadvantageous.

The CMC used in the present invention has a degree of etherification (hereinafter, also referred to as DS) of 0.5 to 1.6,
Preferably, it is in the range of 0.6 to 1.0. When the degree of etherification is less than 0.5, CMC hardly dissolves in water and thus cannot form a gel composition,
When it exceeds 1.6, CMC causes intramolecular crosslinking and cannot sufficiently contain water.

(Aluminum metal salt) The aluminum metal salt used in the present invention is an inorganic or organic aluminum salt. For example, aluminum acetate, aluminum sulfate, aluminum nitrate, potassium alum, aluminum chloride and the like can be mentioned. Preferred aluminum metal salts are aluminum acetate, especially basic aluminum acetate or potassium alum. These aluminum metal salts can be used alone or in combination of two or more. The aluminum metal salt has a function of reacting with carboxymethylcellulose molecules to crosslink the molecules and to include water molecules in the crosslinked product. In addition to the aluminum metal salt used in the present invention, other water-soluble metal salts can be used in combination as long as the performance of the gel composition is not impaired. For example, ferrous chloride, ferric chloride, iron salts such as ferric sulfate, cupric chloride, cupric salts such as cupric sulfate, magnesium salt, barium salt, calcium salt, manganese salt, cadmium Water-soluble polyvalent metal salts such as salts, chromates, titanates, antimonates and the like can be mentioned.

(Carboxymethylcellulose gel composition for growing plants) The carboxymethylcellulose gel composition for growing plants according to the present invention contains the above-mentioned CMC and the above-mentioned aluminum metal salt, and contains the aluminum salt in the gel composition. It is important that the ion equivalent ratio of carboxymethyl cellulose is 0.1 to 1.5, preferably 0.3 to 1.2.

That is, the ion equivalent ratio of aluminum to carboxymethyl cellulose is 0.1 ≦ [ion equivalent of aluminum / ion equivalent of carboxymethyl cellulose] ≦ 1.5, preferably 0.3 ≦ [ion equivalent of aluminum / carboxymethyl. Ion equivalent of methyl cellulose] ≦ 1.2. Here, the ion equivalent of aluminum is expressed as [weight of aluminum metal salt (g) / molecular weight of aluminum metal salt (g)] × [number of aluminum molecules in one molecule of aluminum metal salt] × 3, and ion of CMC The equivalent is [weight of CMC (g) / (162.1 + degree of etherification ×
80)] × [degree of etherification].

When the ion equivalent ratio of aluminum to carboxymethylcellulose is less than 0.1, the gel after water absorption shows a dissolved state and is too soft, and it becomes difficult to retain water between molecules. If it exceeds, the crosslink density of carboxymethylcellulose becomes high, resulting in remarkable water separation, and water seeping out from the gel. The ion equivalent ratio of aluminum to carboxymethylcellulose is preferably 0.3 to 1.2.

The water content of the carboxymethyl cellulose gel composition for growing plants of the present invention is 30 to 99.9% by weight, preferably 60 to 97% by weight, based on the total weight of the gel composition. . Water content is 30% by weight
If it is less than, it is not possible to give sufficient water to the plant,
If it exceeds 99.9% by weight, the shape retention of the gel composition is inferior.

Furthermore, the carboxymethylcellulose gel composition for growing plants of the present invention has a CMC content of 0.05 to 5.0% by weight, preferably 0.5 to 3.0% by weight, based on the total weight of the gel composition. %.
When the content of CMC is less than 0.05% by weight, the lattice of the carboxymethylcellulose gel composition becomes coarse and water molecules easily enter, but the gel easily breaks and substantially forms a gel. And lose water retention. On the other hand, if the content of CMC exceeds 5.0 weight, a uniform gel composition cannot be formed because the fluidity of the gel at the beginning of the gelation reaction is low. Also, 5.
If it exceeds 0 weight, it is economically disadvantageous because the effect corresponding to the content cannot be obtained. Therefore, the carboxymethylcellulose gel composition for growing plants of the present invention has C
When the content of MC is in the range of 0.05 to 5.0 weight, it is possible to have long-term water retention and excellent sustained release of water.

The carboxymethylcellulose gel composition for cultivating plants of the present invention having such a structure, when placed in soil, is biodegraded by bacteria in the soil and crosslinked the carboxymethylcellulose gel composition. As a result of the collapse of the structure, the water contained between the lattices is gradually released over a long period of time.

The carboxymethylcellulose gel composition for growing a plant of the present invention can contain a gel strength modifier, a soil conditioner, a plant active agent, an insecticide, a fungicide and the like as long as the performance is not impaired. The method of incorporating these components is not particularly limited. For example, when producing an aqueous solution or dispersion of CMC, the components can be incorporated by mixing with water.

Examples of gel strength modifiers include xanthan gum, locust bean gum, polyhydric alcohol, starch, cellulose, alginic acid, carrageenan, glucomannan, agar, pectin, pullulan, chitin, chitosan, guar gum, gum arabic, and tamarind seed polysaccharide. And natural polymer compounds such as soy protein, egg white, gluten, gelatin and collagen, and synthetic polymer compounds. Any of these can be used by adding to the extent that the sustained release of water is not impaired. The amount of the gel strength modifier is usually 0.1 to 5% by weight.

Examples of the soil conditioner include soluble phosphorus fertilizer, silicic acid fertilizer, lignocellulose humic acid, nitrohumic acid and the like. Plant active agents include glucose, vitamins, hormonal agents and the like. By adding a plant active agent, the active state of the plant can be maintained. Moreover, the addition amount of the soil conditioner and the plant active agent is usually 0.1 to 3.0% by weight.

(Method for Producing Carboxymethyl Cellulose Gel Composition for Growing Plant) The method for producing the carboxymethyl cellulose gel composition for growing a plant of the present invention is not particularly limited. Can be. (1) CMC was determined to be 30 based on the total weight of the gel composition.
９９99.9% by weight, dissolved or dispersed in water, and then the resulting aqueous solution or dispersion has an ion equivalent ratio of aluminum to carboxymethylcellulose in the gel composition of 0.1-1. 5. A method of manufacturing by adding and mixing an aluminum metal salt in an amount to give 5. (2) The aluminum metal salt is dissolved in water in an amount of 30 to 99.9% by weight, based on the total weight of the gel composition, and then the resulting aqueous solution is mixed with aluminum in the gel composition. A method of manufacturing by adding and mixing an amount of CMC such that the ion equivalent ratio of carboxymethylcellulose is 0.1 to 1.5. (3) CMC and the aluminum metal salt are uniformly mixed in an amount such that the ion equivalent ratio of aluminum to carboxymethylcellulose in the gel composition is 0.1 to 1.5,
The resulting mixture is divided into 3 based on the total weight of the gel composition.
A method of dissolving in water in an amount of 0 to 99.9% by weight.

In other words, taking the case of the above (1) as an example, CMC is stirred at room temperature in water in an amount of 30 to 99.9% by weight based on the total weight of the gel composition. While dissolving or dispersing the mixture in the aqueous solution or dispersion obtained, wherein the ion equivalent ratio of aluminum to carboxymethylcellulose in the gel composition is 0.1 to 1.
The aluminum metal salt is gradually added in such an amount as to give a value of 5, and the CMC and the aluminum metal salt are allowed to react with each other with stirring for a few minutes to be gelled and left to produce a carboxymethylcellulose gel composition. The aluminum metal salt is added to the aqueous solution or dispersion of CMC as a dispersion in an aqueous solution or a water-soluble organic solvent such as glycerin, ethylene glycol, alcohol, or the like.

(Method of Using Carboxymethyl Cellulose Gel Composition for Growing Plants) The carboxymethyl cellulose gel composition for growing plants according to the present invention is used prior to use.
It can be formed into an arbitrary shape suitable for use conditions and used. The shape is, for example, a flat rectangular parallelepiped, a disk, a sphere, a grain, or the like. Also, the shape may be a multi-layer structure, and the ion equivalent ratio of aluminum to carboxymethyl cellulose in each layer may be different. In this case, since each layer biodegrades and releases water at a rate corresponding to the ion equivalent ratio, the water supply rate during use can be controlled by appropriately setting the ion equivalent ratio of each layer. .

The carboxymethylcellulose gel composition for growing plants of the present invention formed as described above can be used by any method. For example, water can be supplied to a cultivated plant, a plant in a forest, an arid zone, or the like for a long time and continuously by the following method. (1) The carboxymethylcellulose gel composition for growing a plant of the present invention is housed in a container having one or a plurality of openings formed on the bottom or on the bottom and the side wall of the bottom. Buried in the soil in the rhizosphere.

In this case, the shape of the container is not particularly limited, and a bag, a tube, a box, a funnel, or the like can be used. The number and shape of the openings are such that when the openings are buried in the soil, the contents can be held in the container, the microorganisms can be easily decomposed by bacteria in the soil, and the released water Water can be easily supplied to the rhizosphere, and can be set appropriately. Further, the material of the container is not particularly limited, but those made of paper or biodegradable synthetic resin are preferable because they do not pollute the environment after use. Further, the carboxymethylcellulose gel composition for growing plants of the present invention may be produced in a container or housed in a container and then put in a sealed state, and the container may be opened immediately before use for use. In this case, handling is extremely simple when the gel composition is transferred, stored, and arranged.

FIG. 1 shows an example in which the carboxymethylcellulose gel composition for growing a plant of the present invention is housed in a container, and the opening (not shown) is buried in the soil of the rhizosphere of the cultivated plant. 1 represents a cultivated plant, 2 represents soil, 3
Represents a carboxymethyl cellulose gel composition for growing plants of the present invention, and 4 represents a container. Further, FIG.
Here is an example. FIG. 2A shows an example of a container having a plurality of openings 7 in the bottom 5, and FIG. 2B shows an example of a container having a plurality of openings 7 in the bottom 5 and the bottom side wall 6. Show.

(2) A method of placing the carboxymethylcellulose gel composition for growing plants of the present invention on the soil surface of the rhizosphere as it is, or mixing and burying it in the soil. FIG. 3 shows on the surface of soil 2 in the rhizosphere of cultivated plant 1
An example in which the carboxymethylcellulose gel composition 3 for plant growth of the present invention is placed is shown. FIG. 4 shows cultivated plant 1
This shows an example in which the carboxymethylcellulose gel composition 3 for growing plants of the present invention is mixed and embedded in the soil 2 in the rhizosphere of the present invention.

(3) The carboxymethylcellulose gel composition for growing plants of the present invention is dried and pulverized, and the obtained pulverized material is placed in a desired water supply section. How to keep water. (4) A method of arranging the carboxymethyl cellulose gel composition for plant growth of the present invention on a desired water supply portion, for example, a grafted portion by coating or coating, and keeping the water as it is or by spraying water. (5) A method of using the carboxymethylcellulose gel composition for growing a plant of the present invention as a water-supplying material for supplying moisture when transferring a soil plant or a horticultural plant.

When the carboxymethylcellulose gel composition for growing plants of the present invention is supplied to soil, it is usually mixed at a ratio of 0.01 to 20 parts by weight with respect to 100 parts by weight of soil. When the amount is less than 0.01 part by weight, the amount of water supply is insufficient, and when the amount exceeds 20 parts by weight, an effect corresponding to the mixing amount cannot be obtained.

[0032]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described based on embodiments. In addition,
The present invention is not limited at all by the following Examples. (Example 1) A solution prepared by dissolving 5.0 g of CMC in 212.5 g of water and further dispersing 0.5 g of basic aluminum acetate in 12.0 g of glycerin was added thereto.
The mixture was stirred until it became uniform to obtain a carboxymethyl cellulose gel. The ion equivalent ratio of aluminum to carboxymethyl cellulose in the obtained carboxymethyl cellulose gel was 0.48. The mixing ratio of each component is as shown in Table 1. Furthermore, the obtained carboxymethylcellulose gel was allowed to stand for one week as it was, and then its water retention and shape retention were visually evaluated. The results are also shown in Table 1.

The following were used as CMC, basic aluminum acetate and glycerin. (1) CMC A sodium salt of carboxymethyl cellulose (a product of Daicel Chemical Industries, Ltd., number <1130>) was used.
The 1% by weight viscosity was 75 mPa · s, and the degree of etherification was 0.73. (2) Basic aluminum acetate A commercially available reagent was used. (3) Glycerin A commercially available reagent was used.

[0034]

[Table 1]

The water retention and the shape retention of the carboxymethylcellulose gel obtained in Example 1 were evaluated as follows. (1) Method of evaluating water retention 200 g of carboxymethyl cellulose gel immediately after preparation
Is placed in a 500 ml beaker, allowed to stand at room temperature for one week, and then gradually tilted until the beaker becomes horizontal. that time,
When the water did not sag, the water retention was good, and when the water oozed from the carboxymethyl cellulose gel dripped from the beaker, the water holding was poor. (2) Method of evaluating shape retention 200 g of carboxymethyl cellulose gel immediately after preparation
Is placed in a 500 ml beaker, allowed to stand at room temperature for one week, and then gradually tilted until the beaker becomes horizontal. that time,
When the carboxymethylcellulose gel collapsed and did not deform, the shape retention was good, and when the carboxymethylcellulose gel collapsed and dropped from the beaker, the shape retention was poor.

Comparative Example 1 In Example 1, CMC2
Using 13.0 g, 0.05 g of basic aluminum acetate
A carboxymethyl cellulose gel was obtained in the same manner as in Example 1 except that The ion equivalent ratio of aluminum to carboxymethylcellulose in the obtained carboxymethylcellulose gel was 0.05. The mixing ratio of each component is as shown in Table 1. Further, in the same manner as in Example 1, the obtained carboxymethyl cellulose gel was evaluated for water retention and shape retention. The results are shown in Table 1.

(Comparative Example 2) In Example 1, CMC2
A carboxymethylcellulose gel was obtained in the same manner as in Example 1, except that 11.0 g was used and 2.0 g of basic aluminum acetate was used. The ion equivalent ratio of aluminum to carboxymethylcellulose in the obtained carboxymethylcellulose gel was 1.92. The mixing ratio of each component is as shown in Table 1. Further, in the same manner as in Example 1, the obtained carboxymethyl cellulose gel was evaluated for water retention and shape retention. The results are shown in Table 1.

Example 2 A dispersion prepared by dissolving 0.8 g of potassium alum in 200.0 g of water and further dispersing 3.0 g of CMC in 20.0 g of glycerin was added thereto, and the mixture was stirred until it became uniform. Thus, a carboxymethyl cellulose gel was obtained. The ion equivalent ratio of aluminum to carboxymethylcellulose in the obtained carboxymethylcellulose gel was 0.46. The mixing ratio of each component is as shown in Table 1. Further, in the same manner as in Example 1, the obtained carboxymethylcellulose gel was visually evaluated for water retention and shape retention. The results are also shown in Table 1.

In Example 2, a commercially available reagent was used as potassium alum. CMC used sodium salt of carboxymethyl cellulose (a product of Daicel Chemical Industries, Ltd., number <1290>). 1% by weight viscosity is 13
It was 50 mPa · s and the degree of etherification was 0.85.

As is clear from the results in Table 1, Example 1
And 2 exhibited good water retention and good shape retention, whereas those of Comparative Examples 1 and 2 in which the ion equivalent ratio of aluminum to carboxymethylcellulose was not within a predetermined range, the water retention or shape retention Was inferior.

[0041]

As described above in detail and specifically, the carboxymethylcellulose gel composition for growing plants according to the present invention is characterized in that a large amount of water is intercalated between molecules of carboxymethylcellulose cross-linked via aluminum, Carboxymethylcellulose is gradually decomposed by bacteria in the soil when it comes in contact with and gradually releases the water contained between the lattices, so that it is possible to supply water to the cultivated plants continuously for a long time. It works. Furthermore, the decomposition reaction of carboxymethylcellulose by bacteria in the soil varies depending on the condition of the soil. If the soil is wet due to rain or the like, the activity of the bacteria is reduced and the decomposition rate is slowed, so the gel composition Unnecessary consumption of objects is suppressed, and as a result, an effect is obtained that the water supply period is prolonged. In addition, such a carboxymethyl cellulose gel composition for growing plants has a strong crosslinked structure, that is, because it has excellent shape retention properties,
There is no deformation, destruction, release of water, etc. before use, and water can be effectively supplied to a desired water supply portion. Further, the carboxymethyl cellulose gel composition for growing plants of the present invention has biodegradability, so that the use thereof does not pollute the environment.

[Brief description of the drawings]

FIG. 1 shows an example in which a carboxymethylcellulose gel composition for growing a plant of the present invention is housed in a container, and an opening (not shown) is buried in soil in the rhizosphere of a cultivated plant.

FIG. 2A shows an example of a container having a plurality of openings at the bottom, and FIG. 2B shows an example of a container having a plurality of openings at the bottom and the bottom side wall.

FIG. 3 shows an example in which the carboxymethyl cellulose gel composition for growing a plant of the present invention is placed on the soil surface in the rhizosphere of a cultivated plant.

FIG. 4 shows an example in which the carboxymethyl cellulose gel composition for growing a plant of the present invention is mixed and embedded in soil in the rhizosphere of a cultivated plant.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Cultivated plant 2 Soil 3 Carboxymethylcellulose gel composition for growing plants of the present invention 4 Container 5 Container bottom 6 Container bottom side wall 7 Opening

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Claims (9)

[Claims] 1. A carboxymethylcellulose gel composition for growing plants comprising carboxymethylcellulose, an aluminum metal salt and water, wherein (1) the degree of etherification of carboxymethylcellulose is from 0.5 to 1.
6, (2) the ion equivalent ratio of aluminum to carboxymethylcellulose in the gel composition is 0.1 to 1.5;
(3) A carboxymethyl cellulose gel composition for growing plants, wherein the content of water is 30 to 99.9% by weight based on the total weight of the gel composition. 2. The content of carboxymethylcellulose is 0.05 to 5.0% based on the total weight of the gel composition.
The carboxymethylcellulose gel composition for growing plants according to claim 1, which is 0% by weight. 3. A gel strength adjuster, a soil conditioner,
The carboxymethylcellulose gel composition for growing plants according to claim 1 or 2, comprising at least one selected from the group consisting of a plant active agent, an insecticide and a fungicide. 4. The carboxymethylcellulose gel composition for growing plants according to claim 1, wherein the carboxymethylcellulose gel composition is in a solid form such as a flat rectangular parallelepiped, a disk, a sphere, and a granule. 5. The carboxymethyl cellulose gel composition for growing a plant according to claim 4, wherein the solid form has a multilayer structure, and the ion equivalent ratio of aluminum to carboxymethyl cellulose in each layer is different. 6. First, carboxymethylcellulose is
30 to 99.9% by weight based on the total weight of the gel composition
Is dissolved or dispersed in water in such an amount as to give an amount such that the ion equivalent ratio of aluminum to carboxymethylcellulose in the gel composition is 0.1 to 1.5 in the resulting aqueous solution or dispersion. The method for producing a carboxymethylcellulose gel composition for growing plants according to any one of claims 1 to 4, wherein the aluminum metal salt is added and mixed. 7. The carboxymethylcellulose gel composition for growing a plant is stored in a container having one or more openings formed at the bottom or at the bottom and the bottom side wall,
The method for using a carboxymethyl cellulose gel composition for growing plants according to any one of claims 1 to 5, wherein an opening of the container is buried in soil in a rhizosphere of a cultivated plant. 8. The carboxymethylcellulose gel composition for cultivating a plant is placed on a soil surface of a rhizosphere of a cultivated plant or mixed and buried in the soil. Use of the carboxymethyl cellulose gel composition for growing a plant according to the above item. 9. The carboxymethylcellulose gel composition for growing a plant is dried and pulverized, and the obtained pulverized product is placed in a rhizosphere of a cultivated plant, and then water is sprayed to keep the pulverized product. A method for using the carboxymethylcellulose gel composition for growing plants according to any one of claims 1 to 4.