JPH055A - Production of seeding sheet - Google Patents

Abstract

PURPOSE:To obtain a seeding sheet efficiently dispersing even small seeds, germinating on the same day as by direct sowing, providing new sprouts in a good dispersed state by applying a coating solution mainly comprising seeds of plant and a water-soluble adhesive to a substrate of fiber sheet and drying. CONSTITUTION:A coating solution comprising plant seeds (e.g. seed of Western lawn grass), a water-soluble adhesive (e.g. sodium alginate), kaolin, talc, etc., is applied to a substrate of fiber sheet such as paper composed of needle-leaf tree Kraft paper and dried at 5-60 deg.C to give the objective seeding sheet. Plant seeds which are previously immersed in a low-viscosity polyhydric alcohol such as polyethylene glycol and coated with the alcohol is preferably used as the plant seeds. New sprouts having extremely uniform and excellent dispersed state can be confirmed to germinate on the same day as by direct sowing by placing the seeding sheet on soil and watering.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sowing sheet for holding seeds of a plant on a support of a fiber sheet and cultivating and cultivating the plant with the sheet.

[0002]

2. Description of the Related Art Generally, a plant is cultivated as it is by sowing seeds in a soil and germinating, or it is cultivated by transplanting after germination.
At the time of this sowing, it is difficult to disperse extremely small seeds evenly in the soil, which is very troublesome.

As a solution to this problem, a method of coating seeds with a water-soluble polymer and sowing mechanically has been developed and put into practical use. However, it is difficult to coat the seeds one by one, and it takes time and people to select the coated seeds. Further, there is a problem that an expensive seeding machine is required at the time of sowing.

[0004]

The present invention relates to the production of a sowing sheet, and particularly to a method for producing a sowing sheet capable of germinating and cultivating a plant by uniformly dispersing and sowing small seeds.

[0005]

DISCLOSURE OF THE INVENTION The present invention is a method for producing a sowing sheet, which comprises applying a coating solution containing plant seeds and a water-soluble adhesive as a main component on a support of a fiber sheet and then drying it. ..

[0006]

The support of the fiber sheet used in the present invention is a paper using natural fibers such as wood pulp produced from hardwood and softwood, non-wood pulp such as cotton and hemp, and recycled pulp derived from them. Or inorganic fiber paper such as glass fiber or rock wool, or chemical fiber paper such as synthetic pulp fiber or synthetic fiber, and non-woven fabric, and is not particularly limited.

In the present invention, a coating solution containing plant seeds and a water-soluble adhesive as a main component is applied onto the above-mentioned fiber sheet support and dried to produce a sowing sheet.

The type of seed is not particularly limited, but a preferable form is seed thickness of 0.0.
It is better to be in the range of 1 to 2 mm. The amount of seed varies depending on the type of seed, and thus may be appropriately determined depending on the seed used.

The seeding sheet obtained by the production method of the present invention is placed on the soil or further covered with soil, and then watered for cultivation. In the present invention, a water-soluble adhesive is used as an adhesive, and an adhesive having a property of being soluble in water again after being applied as an aqueous coating liquid and dried. At the time of cultivation, the adhesive is melted by irrigation and the seeds become naked and germinate.

If the adhesive does not dissolve in water again after it has dried, the seeds die and do not germinate in the coating layer.

Examples of the water-soluble adhesive include sodium alginate, soluble starch, gelatin, CMC, polyvinyl alcohol and the like. The amount of this adhesive, the type and amount of seeds, or the type of adhesive, because the force to bond and hold the seed is different, it may be appropriately determined as necessary,
It is not particularly limited.

If the seeds are preliminarily dipped in a low-viscosity polyhydric alcohol solution and coated, the seeds easily become compatible with water, and the seeds are uniformly dispersed in the adhesive solution. The application of the coating liquid is a preferred embodiment because the seeds can be uniformly dispersed on the support of the fiber sheet.

The low-viscosity polyhydric alcohol is a liquid that is liquid at room temperature and does not adversely affect germination.
Examples thereof include ethylene glycol, propylene glycol, butylene glycol, 2-ethylhexyl glycol, glycerin, polyethylene glycol, polypropylene glycol and polybutylene glycol.

The coating liquid can be applied by a commonly used method such as a gravure coater, a roll coater, a curtain coater, an air knife coater, a bar coater, a die coater, a brush coater or a sprayer.
It may be selected appropriately. Further, a coating layer can be provided on a desired portion by a method such as flexographic printing.

When the sheet temperature exceeds 60 ° C., the germination rate of the dried sheet after application is deteriorated depending on the kind of seed. Further, if the temperature is lower than 5 ° C, it takes a long time to dry the sheet in the step of forming the coating layer, which is not realistic. Therefore,
The sheet is dried at a sheet temperature in the range of 5 to 60 ° C.

Further, when preparing a coating liquid containing seeds and a water-soluble adhesive as a main component, an inorganic organic pigment, an inorganic organic fertilizer, soil,
A soil improver, a fungicide, an antiseptic, a nutrient and the like can be added as appropriate.

In the sowing sheet thus obtained, the seeds are uniformly dispersed on the fiber sheet, and the seeds germinate just by irrigating and cultivating.

[0018]

The present invention will be described in more detail with reference to the following examples, but the present invention is not limited to these examples. In addition,% in an example shows weight%.

Example 1 A. Preparation of coating liquid Kaolin 2 in 100 ml of 0.4% sodium alginate
5 g, 25 g of talc and 4 g of seeds of Western turf were added and mixed with stirring to obtain a coating liquid.

B. Coating and Drying The above coating liquid was hand-coated on a paper made of softwood kraft pulp with a coating bar so that the coating liquid amount was 50 g / m ² , and dried at a temperature of 40 ° C. to obtain a seeding sheet. It was

C. Germination test The above sheet was placed on a soil in which peat moss was mixed with 10% (volume) of mountain soil, watered, and a germination test was performed. As a result, germination started after 5 days, and the sprout distribution was uniform.

Example 2 A. Preparation of coating liquid Kaolin 2 in 100 ml of 0.4% sodium alginate
5 g, 25 g of talc, and 4 g of seeds of Western turf that have been previously dipped in polyethylene glycol and coated,
The coating liquid was obtained by mixing with stirring.

B. Coating and Drying The above coating liquid was hand-coated on a paper made of softwood kraft pulp with a coating bar so that the coating liquid amount was 50 g / m ² , and dried at a temperature of 30 ° C. to obtain a seeding sheet. It was The seed sheet obtained had better seed dispersion than the seed sheet obtained in Example 1.

C. Germination test A germination test was carried out in the same manner as in Example 1. As a result, germination was started 5 days later, and the sprout dispersion state was extremely uniform and excellent.

Example 3 A. Preparation of coating liquid Kaolin 2 in 100 ml of 0.4% sodium alginate
5 g, talc 15 g, peat moss 5 g, and 4 g of seeds of Western turf that had been preliminarily dipped in glycerin and coated were added with stirring to obtain a coating liquid.

B. Coating and Drying A paper-like fiber sheet consisting of 30% softwood kraft pulp and 70% rockwool is hand-coated with a coating bar to a coating liquid of 50 g / m ² at a temperature of 25 It was dried at ℃, to obtain a seeding sheet. The seed sheet obtained had better seed dispersion than the seed sheet obtained in Example 1.

C. Germination test A germination test was carried out in the same manner as in Example 1. As a result, germination was started 5 days later, and the sprout dispersion state was extremely uniform and excellent.

Example 4 A. Preparation of coating liquid Kaolin 2 in 100 ml of 0.4% sodium alginate
5 g, 15 g of talc, and 0.5 g of daily grass seeds, which had been preliminarily immersed in polyethylene glycol and coated, were mixed by stirring to obtain a coating liquid.

B. Coating and Drying A paper-like fiber sheet consisting of 30% softwood kraft pulp and 70% rockwool is hand-coated with a coating bar to a coating liquid of 100 g / m ² at a temperature of 25 It was dried at ℃, to obtain a seeding sheet.

C. Germination test A germination test was conducted in the same manner as in Example 1. As a result, germination was started 10 days later, and the sprout dispersion state was extremely uniform and excellent. Example 5 A. Preparation of coating liquid Kaolin 2 in 100 ml of 0.5% sodium alginate
5 g, 15 g of talc, and 0.3 g of petunia seeds, which had been preliminarily immersed in polyethylene glycol and coated, were mixed by stirring to obtain a coating liquid.

B. Coating and drying A paper-like fiber sheet consisting of 30% of softwood kraft pulp and 70% of rock wool is hand-coated with the above coating liquid using a gravure coater so that the coating liquid amount is 30 g / m ² , and the temperature is 25. It was dried at ℃, to obtain a seeding sheet.

C. Germination test A germination test was conducted in the same manner as in Example 1. As a result, germination was started 10 days later, and the sprout dispersion state was extremely uniform and excellent.

Comparative Example 1 A. Preparation of coating liquid To 100 ml of 2% styrene-butadiene latex, 25 g of kaolin, 25 g of talc and 4 g of seeds of western turf were added and mixed with stirring to obtain a coating liquid.

B. Coating and drying The above coating composition was coated on a paper made of softwood kraft pulp with a coating bar to give a coating liquid amount of 50 g / m ^2.
Was hand-painted and dried at a temperature of 40 ° C. to obtain a seed sheet.

C. Germination test The above sheet was placed on a soil in which peat moss was mixed with 10% (volume) of mountain soil, watered, and a germination test was performed. As a result, germination did not occur even after 30 days.

Comparative Example 2 The common seeds of the Western turf used in Example 1 were directly sown on the soil used in Example 1 by hand and subjected to a germination test. As a result, germination was after 5 days as in Example 1, but the sprout dispersion was worse than in Example 1.

Comparative Example 3 The seeds of the daily grasses used in Example 4 were directly sown by hand on the soil used in Example 1 for a germination test. As a result, germination was after 10 days as in Example 4, but the sprout dispersion was worse than in Example 4.

Comparative Example 4 The seed of petunia used in Example 5 was directly sown by hand on the soil used in Example 1 to perform a germination test. as a result,
Germination was after 10 days as in Example 5, but the sprout dispersion was worse than in Example 5.

[0039]

As is clear from the results of the examples, the production method of the present invention can efficiently disperse even extremely small seeds, and the obtained sowing sheet germinates on the same day as direct sowing, and The dispersed state was extremely uniform and excellent.

Claims (1)

Claim: What is claimed is: 1. A method for producing a seeding sheet, which comprises applying a coating solution containing plant seeds and a water-soluble adhesive as a main component onto a support of a fiber sheet and then drying. 2. The method for producing a sowing sheet according to claim 1, wherein the seed is previously coated with a low-viscosity polyhydric alcohol. 3. The method for producing a sowing sheet according to claim 1, wherein the sheet is dried at a sheet temperature of 5 to 60 ° C.