JPH03191703A - Sheet for seedling bed - Google Patents

Abstract

PURPOSE:To improve the germination and growth of seeds by uniformly adhering the seeds of a dense perennial grass such as a pasture grass or lawn grass wholly between two sheets with an aqueous adhesive homogeneously mixed with a heat-storing agent and a fertilizer. CONSTITUTION:The seeds 4 of a dense perennial grass such as lawn grass or pasture grass are wholly and uniformly adhered between two sheets 1 and 1 with a water-soluble adhesive 3 mixed with a heat-storing agent, a fertilizer, etc. The fine powder of the carbide of a transition metal belonging to the IV group in the periodic table is employed as the heat-storing agent. The two sheets are preferably those having suitable aerially transmissible property and water-retaining property and readily decomposed by the interaction of light, water and bacterial in soil, such as cellulosic fiber non-woven fabric, paper, starch film or polyvinyl alcohol film.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention is suitable for use in sowing dense perennial plants such as grass and grass at golf courses, resorts, stadiums, schools, parks, developed areas, etc. The present invention relates to a seedbed sheet suitable for use in seedbeds.

(Conventional techniques and problems) Manual sowing of dense perennial plants such as grass and grass is extremely complicated and labor-intensive, so research has been actively conducted on simple methods for planting these plants.
Various vegetation zones (for example, Japanese Patent Publication No. 5B-18729, Japanese Patent Publication No. 63-184616, Utility Model No. 83-27) using textiles, paper, nets, cotton waste, pulp waste as base materials
582 Publication), composite sheets for vegetation (e.g. Special Publication No. 57-
There were proposals for vegetation materials such as ``Publication No. 5881''.

However, these conventional methods mainly focus on reducing the complexity of manual processes and simplifying the labor force. In particular, maintaining an appropriate temperature, so-called heat retention, is a passive heat retention that reduces the dissipation and loss of heat obtained from the sun by the base material only by the characteristics of the base material. is often criticized, and as a result, it often causes poor germination or uneven germination.

(Means for Solving the Problems) In order to solve the above problems, the present inventors have conducted extensive research on methods for imparting heat retention properties, and as a result of fully considering the various performances required of vegetation materials. We have now completed a seedbed sheet that is far superior to conventional products.

The present invention will be described in detail below. As shown in FIG. 1, the seedbed sheet of the present invention is made by using a water-soluble adhesive in which a heat storage agent and fertilizer are uniformly kneaded between two sheet-like materials. grass,
Seeds of dense perennial plants such as grasses are evenly adhered to the entire surface.

Here, as the heat storage agent, a fine powder of a carbide of a transition metal belonging to Group 1 of the periodic table is used.

The reason for this is that the solar radiation spectrum has a peak around 0.5 μm and contains about 95% of the total energy between 0.3 and 2.0 μm, and the radiation spectrum of the sun has a peak around 0.5 μm and contains about 95% of the total energy between 0.3 and 2.0 μm. Carbides have a large energy absorption and heat conversion ability in the above range and have a heat storage effect, so they are desirable, such as titanium carbide (T i C), zirconium carbide (ZrC), hafnium carbide (HfC), etc. Zirconium carbide is commonly used. Also, when the above carbide is made into fine powder, the surface area per unit weight becomes larger (and the effect becomes larger).

Considering the various performance aspects that a vegetation material should have, the two sheet-like materials should have appropriate air permeability, water retention, light, water, and moisture so as not to hinder the germination and growth of seeds. It is preferable to use materials that can be easily corroded and decomposed by interaction with bacteria in the soil, such as cellulose fiber nonwoven fabric, paper, starch, and polyvinyl alcohol (PVA).
) films, etc. The water-soluble adhesive may be one that easily swells and dissolves in room-temperature water so as not to interfere with germination, and includes, for example, starch, sodium alginate, gelatin, and polyvinyl alcohol (PVA).

The type and amount of seeds attached are not particularly limited as long as they are dense perennial plants such as grass and grass, and can be selected as appropriate depending on the weather conditions of the construction area and the intended use. It is also possible to mix two or more types.

In addition, fertilizers are not limited in any way, and include ordinary fertilizers such as nitrogen, phosphoric acid, and potassium.

(Effects of the invention) Compared to conventional products, the seedbed sheet produced as described above has excellent heat retention effects, especially in cold regions, because the heat storage agent is evenly adhered to the entire surface. As a result, the seeds germinate and grow well.

2. The two sheets have breathability and water retention, and are easily corroded and decomposed by interaction with light, water, bacteria in the soil, etc., so there is no negative impact on seed germination and growth. .

There are effects such as

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

(Example 1) 10% fine powder of zirconium carbide (ZrC) was added as a heat storage agent to the surface of a cellulose fiber nonwoven fabric with a basis weight of 35 g/J.
, Apply 20g/♂ of starch adhesive evenly mixed with 0.5% liquid fertilizer to the entire surface by knife coating method, and then uniformly spread 8'l/J of bent grass pen cloth seeds over the entire surface as a cold region lawn. After this, a 25 g/male cellulose fiber nonwoven fabric was laminated thereon, and the product was dried and cooled to obtain product 1 of the present invention.

(Example 2) 20% fine powder of zirconium carbide (ZrC) was applied as a heat storage agent on the surface of a cellulose fiber nonwoven fabric with a basis weight of 40 g/j.
Polyvinyl alcohol adhesive mixed with 0.5% liquid fertilizer was applied uniformly to the entire surface at 20g/♂ using the rotary screen printing method, and then 15g// of wild grass seeds were evenly spread over the entire surface as grass for warm regions. After this, a 15 g/m polyvinyl alcohol film was laminated thereon, and the film was dried and cooled to obtain product 2 of the present invention.
I got it.

(Comparative Example 1) On the surface of a cellulose fiber nonwoven fabric with a basis weight of 35 g/J, 20 g/d of a starch adhesive in which 0.5% of liquid fertilizer was uniformly kneaded was applied over the entire surface by a knife coating method, and then coated in a cold region. Bentgrass Bencross seeds as Σ8
g/I/ was applied uniformly over the entire surface by a scattering method, and then a 25 g/j cellulose fiber nonwoven fabric was laminated thereon and dried and cooled to obtain a comparative area I.

(Comparative Example 2) On the surface of a cellulose fiber nonwoven fabric with a basis weight of 40 g/vl, 20 g/l/polyvinyl alcohol adhesive in which 0.5% of liquid fertilizer was uniformly kneaded was applied uniformly over the entire surface by rotary screen printing method, Thereafter, 15+r// wild grass seeds were spread uniformly over the entire surface as a warm-season turf, and then a 15 g/J polyvinyl alcohol film was laminated thereon and dried and cooled to obtain Comparative Field 2. .

The above invention! , 2 and Comparative Field 1.2 were constructed and watered under the same conditions, and their heat retention, germination rate, etc. were investigated.

The results are shown in Table 1. Regarding heat retention, the surface temperature of the applied sheet was measured continuously day and night, and the maximum and minimum temperatures at that time were reported.

Table 1

[Brief explanation of drawings]

FIG. 1 shows a cross section of the seedbed sheet of the present invention. 1. Sheet-like material 2. Heat storage agent 3. Water-soluble adhesive 4. Seeds

Claims (1)

[Claims] Seeds of dense perennial plants such as grass and grass are evenly adhered to the entire surface between one or two sheet-like materials using a water-soluble adhesive in which a heat storage agent and fertilizer are evenly kneaded. A seedbed sheet that is characterized by its ability to grow. 2. A seedbed sheet, characterized in that the heat storage agent according to claim 1 is a fine powder of a carbide of a transition metal belonging to Group IV of the periodic table.