JPH054A - Production of sowing sheet - Google Patents

Abstract

PURPOSE:To obtain a sowing sheet capable of giving new sprouts kept in good disperse state and germinating plant seeds on soil on the same day as direct sowing by watering and by mixing these plant seeds with an aqueous suspension of pulp fiber and making the suspension into a sheet to uniformly disperse these seeds in the sheet. CONSTITUTION:Seeds (e.g. seed of western lawn) of a plant are mixed with an aqueous suspension of pulp fiber such as craft pulp of broad-leaf tree and further mixed with talc, sodium alginate, calcium chloride, etc., and then the mixture is made into a sheet by hand using a corn type hand paper making device, etc., and the resultant sheet is dried at 40 deg.C to provide the objective sowing sheet in which these seeds of plant are uniformly retained. Furthermore, plant seeds which was coat-treated by preliminarily dipping a seed in low- viscosity polyhydric alcohol such as polyethylene glycol are preferably used as the plant seeds. When the sheet is put on the soil and watered and germination test is carried out, it can be confirmed that the seeds germinate on the same day as direct sown seeds.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seeding sheet for holding a plant seed in a sheet and germinating the seed to cultivate the plant.

[0002]

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

As a solution to this problem, there is a method of coating seeds with a water-soluble polymer, an inorganic substance or the like and granulating the seeds to a size that is easy to handle. There is also a sheet or tape in which the coated seeds are lined up according to the intended use. Furthermore, tools and sowing machines for sowing coated seeds have 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 process the coated seeds. In addition, mechanization of sowing has a problem that an expensive sowing machine is required.

[0005]

DISCLOSURE OF THE INVENTION The present invention provides a method for producing a sowing sheet, in which small seeds are evenly dispersed and sown, and a plant can be cultivated without requiring an expensive sowing machine.

[0006]

DISCLOSURE OF THE INVENTION The present invention is a method for producing a sowing sheet in which plant seeds are mixed with an aqueous suspension of pulp fibers for papermaking.

[0007]

In the present invention, first, an aqueous suspension of pulp fibers is prepared. The pulp fibers used include, as natural fibers, wood pulp produced from hardwoods and conifers, non-wood pulps such as cotton and hemp, and waste paper pulps regenerated from them. Synthetic fibers include synthetic pulp fibers produced from various synthetic resins, and any synthetic fibers that can be made into an aqueous suspension may be used. In addition, synthetic fibers that are disintegrated by ultraviolet rays and bacteria are preferable, as are natural fibers. Furthermore, glass fibers or inorganic pulp fibers such as rock wool can be used depending on the purpose of use.

Next, plant seeds are added to this aqueous suspension of pulp fibers and mixed by stirring. For seed types,
Although not particularly limited, it is preferable that the thickness of the seed is in the range of 0.01 to 2 mm as a preferable form. Seeds with too fine particles have a poor yield during papermaking, while seeds with too large particles are also unfavorable in relation to the thickness of the pulp fiber layer.

The amount of seeds to be added varies depending on the kind of seeds, and may be appropriately determined depending on the seeds used or the purpose of germination distribution and is not particularly limited.

When a water-soluble adhesive is further added to the above-mentioned water suspension, the strength of the obtained seeding sheet is increased and the handling becomes easy. Further, it is important that the adhesive added to the water suspension is a water-soluble adhesive which has the property of re-dissolving in water even when dried. When cultivating using this seeding sheet,
It is a preferred embodiment that the water-soluble adhesive is dissolved by irrigation or soil moisture so that the seed becomes naked so as not to hinder the growth of the seed.

The water-soluble adhesive may be, for example, an alginate, soluble starch, gelatin, CMC, polyvinyl alcohol, etc. which is soluble in water and re-soluble after drying. The amount of this adhesive varies depending on the type of the adhesive or the type of seed, and therefore may be determined as necessary in consideration of the germination conditions and is not particularly limited.

Further, if the seeds are dipped in a low-viscosity polyhydric alcohol solution in advance and coated, the seeds easily become compatible with water, the seeds are well dispersed in an aqueous suspension of pulp fibers, and the seeds are spread in a sheet. This is a preferred embodiment because the seeds are evenly distributed.

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

Then, an aqueous suspension of pulp fibers to which seeds have been added is made into a sheet using a paper machine or the like. The paper machine is a paper machine generally used in the pulp and paper industry, for example, a Fourdrinier paper machine, a Fourdrinier paper machine, a Fourdrinier and Shortnet combi paper machine,
Examples include hand-made and machine-made machines used on a gauze paper machine or Japanese paper, and may be appropriately selected according to the purpose of use.

The temperature of the sheet is 60 when drying the sheet.
If the temperature exceeds ℃, the germination rate deteriorates depending on the seed type.
Further, if the temperature is lower than 5 ° C, it takes a long time to dry the sheet, which is not realistic. Therefore, it is a preferred embodiment that the sheet is dried at a sheet temperature of 5 to 60 ° C.

Further, in the case of papermaking, an inorganic suspension of pulp fibers, an inorganic organic filler, an inorganic organic fertilizer, soil, a soil conditioner,
Antifungal agents, antiseptics, nutrients, fixing agents for water-soluble adhesives and the like can be added as appropriate.

The seeds thus produced have the seeds evenly dispersed in the sheet, and the seeds are simply cultivated by placing the sheet on the soil or further covering it with soil and irrigating it. Germinate.

[0018]

The present invention will be described in more detail below with reference to examples, but the present invention is not limited to these examples. In addition,% and part in an example show weight% and a weight part, respectively. Moreover,% is based on the total dry pulp.

Example 1 To an aqueous suspension of bleached hardwood kraft pulp, 30% of ordinary seeds of Western turf, 60% of talc, 2% of sodium alginate and 1% of calcium chloride were added and mixed well. Handmade with a square handmade machine, dried at 40 ° C, and weighed 25
A seeding sheet of 0 g / m ² was obtained. This sheet was placed on a soil in which 10% (volume) of peat moss was mixed with mountain soil, watered, and a germination test was conducted. As a result, germination started after 5 days.

Example 2 The same procedure as in Example 1 was carried out except that ordinary seeds of western lawn were preliminarily dipped in polyethylene glycol for 5 hours for coating and then added. The seed sheet obtained had better seed dispersion than the seed sheet obtained in Example 1. The germination test was also carried out in the same manner as in Example 1, and as a result, germination was started after 5 days and the distribution of sprouts was uniform.

Example 3 An aqueous suspension of deinked pulp obtained from used newspapers, mainly newspapers, was treated with glycerin to coat 30% of Western grass seeds, 60% of talc, and sodium alginate. Add 2% and 1% calcium chloride, mix well,
Handmade with a square handmade machine, dried at 25 ° C, and weighed 2
A seeding sheet of 50 g / m ² was obtained. The resulting seeding sheet had better seed dispersion than the seeding sheet obtained in Example 1 (similar to Example 2). The germination test was carried out in the same manner as in Example 1, and as a result, germination started after 5 days and the distribution of sprouts was uniform.

Example 4 A daily suspension of conifer bleached kraft pulp was treated with polyethylene glycol in advance and coated with 4 daily grass seeds.
%, Peat moss 20%, talc 60%, sodium alginate 2%, calcium chloride 1%, mixed well, hand-made with a square hand-made machine, dried at 25 ° C, A seeding sheet with an amount of 250 g / m ² was obtained. The germination test was carried out in the same manner as in Example 1. As a result, germination was started after 10 days and the distribution of sprouts was uniform.

Example 5 To an aqueous suspension of 20 parts of bleached softwood kraft pulp and 80 parts of bleached softwood chemithermo-mechanical pulp was added 5% of petunia seeds previously coated with polyethylene glycol, 20% of talc, and alginic acid. 2 sodium
%, Calcium chloride 1% added and mixed well, hand-made with a square hand-made machine, dried at 40 ° C, basis weight 60 g / m ²
A seeding sheet was obtained. As a result of carrying out a germination test on this sheet in the same manner as in Example 1, germination started after 10 days and the distribution of sprouts was uniform.

Comparative Example 1 The seeds of ordinary Western grass used in Example 1 were directly sown by hand on the soil used in Example 1, and a germination test was carried out in the same manner as in Example 1. As a result, germination was started. After 5 days as in Example 1, the distribution of shoots was worse than in Example 1.

Comparative Example 2 The daily grass seeds used in Example 4 were directly sown on the soil used in Example 1 by hand and subjected to a germination test in the same manner as in Example 1. As a result, germination was started in the same manner as in Example 4. However, the distribution of sprouts was worse than that of Example 4.

Comparative Example 3 The seeds of petunia used in Example 5 were directly sown on the soil used in Example 1 by hand to perform a germination test. As a result, germination was started after 10 days as in Example 5. The distribution of sprouts was worse than in Example 5.

[0027]

As is clear from the results of the examples, the sowing sheet obtained by the method of making paper by adding plant seeds to an aqueous suspension of pulp fiber, germinates on the same day as direct sowing, The distribution of sprouts was uniform and excellent.

Claims (4)

[Claims] 1. A method for producing a sowing sheet, comprising mixing seeds of a plant with an aqueous suspension of pulp fibers for papermaking. 2. The method for producing a seeding sheet according to claim 1, wherein a water-soluble adhesive is further added to the water suspension. 3. The method for producing a sowing sheet according to claim 1, wherein seeds are previously coated with a low-viscosity polyhydric alcohol. 4. 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.