JPS5820103A - Seed planting sheet - 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 The present invention is a seeding sheet used for cultivating paddy rice, Satsatsu rape, and flowers, which enables the growth of uniform seedlings without dense planting or paddy seeds, and enables the raising of intermediate seedlings. The purpose of this invention is to provide a seeding sheet suitable for mechanical transplantation.

In recent years, rice transplanters have become extremely popular in wet rice cultivation in order to save labor and improve efficiency, and about 90% of the planted area is now transplanted by machine.

Mechanical transplant cultivation usually uses a seedling box to transplant the grown seedlings, but when using a seedling box, first place a bed in the box, scatter seeds on the surface of the bed, and then cover the surface with soil. Make the desired water.

Grow by applying fertilizer, etc.

In the above-mentioned case, a certain amount of seeds are sown manually or mechanically, but with conventional methods, seeds tend to be sown unevenly, resulting in partially densely planted seedlings or paddy seeds.

In addition, seedlings are usually transplanted with 2.5 true leaves as eye coating, but when transplanting in cold regions or under abnormal weather/weather conditions, in order to obtain a stable harvest, it is necessary to transplant at 2.5 true leaves. It is desirable to transplant medium-sized large seedlings with five leaves.

However, if sowing is uneven and dense, mechanical transplantation is likely to cause plant defects, resulting in increased labor and decreased yield. Also, if the seedlings are dense, the seedlings tend to be weak and elongated.

By adopting the structure described in the claims of the present invention, it was possible to obtain a seeding sheet that enables uniform sowing without coarseness and density, and that also yields intermediate-grade seedlings suitable for mechanical transplantation.

FIG. 1 and FIG. 2 show one embodiment of the present invention, and the present invention will now be explained based on these drawings.

The seeding sheet 1 of the present invention has a plurality of stripes formed on the surface of a sheet-like support (hereinafter simply referred to as support) 2 with a supporting layer 3 for supporting seeds at intervals of a width l. It is.

The support 2 needs to have an appropriate amount of voids so as not to interfere with the rooting and growth of the seeds, and is preferably one that easily decomposes during the seedling-raising period or when transplanted into a paddy field. Such materials include those whose main raw material is cellulose fibers, such as ordinary paper, softwood, hardwood ground pulp, and refiner i-ground pulp.

Nonoruno's fiber sludge is discharged from the paper manufacturing process, which is used to make various types of paper such as thermomechanical pulp, crund pulp, and semi-chemical pulp.

Cellulose fibers such as fibers of bark, straw, rice husk, sawdust, waste paper/gurzo, bagasse, etc. can be used, and if necessary, the cellulose fibers mixed with various synthetic fibers can be used. Particularly suitable as a support is paper with a density of 0.809 Atv+'' or less, preferably 040 to OgO Δ-, with a weak size or no size.

Further, as a support, various fillers and swelling aids such as methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, and carboxymethyl cellulose can be added to the above-mentioned various cellulose fibers. The swelling aid promotes water retention and swelling of the support by irrigation, and can impart properties favorable to the growth of healthy seedlings.Furthermore, fertilizer is added to the support depending on the type of target crop. You can also do that.

The support layer 3 laminated on the surface of the support 2 is formed in a plurality of stripes at regular intervals. FIG. 3 shows another embodiment of the present invention (in FIG. 3, the same reference numerals as in FIGS. 1 and 2 indicate the same members), in which the support layer 4 has a plurality of rectangular halftone dots. It was formed as a shape.

The shape, size, and spacing of the supporting layer 3 in the cylinder and the spacing of the supporting layer 4 mentioned above should be taken into consideration as appropriate depending on the type of target crop, the size of the seedling box, the size of the seedlings, etc. Just choose.

The aforementioned supporting layers 3 and 4 may be of any type as long as they are capable of adhering and supporting seeds, and are capable of adhering and supporting seeds. In the present invention, a water-activated adhesive, a heat-sensitive adhesive, or a pressure-sensitive adhesive can be used as the material for the supporting layer. A water-activated adhesive is one that exhibits adhesive properties due to moisture, and is made of polyvinyl alcohol, starch, or derivatives thereof.

One or more of cellulose derivatives such as carboxymethyl cellulose, methyl cellulose, and hydroxyethyl cellulose, acrylic acid copolymer resin, sodium alginate, and polyvinylpyrrolidone can be used.

In addition, i-thermal adhesives are those that develop adhesive properties when heated, and include base polymers such as ethylene-vinyl acetate copolymer resins, ethylene-acrylate copolymer resins, polyamide resins, and polyester resins, as well as rosin, petroleum, etc. Those containing tackifiers such as resins and waxes and plasticizers can be used.

In addition, pressure-sensitive adhesives are those that develop adhesiveness when pressure is applied, and include natural rubber, styrene-citadiene rubber,
Rosin is used as a viscosity imparting agent for rubber-based substances such as polyisozolene, vinyl-based substances such as polyacrylic acid ester, polyvinyl ether, polyisozotylene, polyvinyl acetate, and polymeric substances such as atactic polypropylene.

Compositions containing petroleum resins, alkyd resins, xylene resins, etc. and plasticizers can be used.

The present invention has the above-described structure, and for storage before use as a type I sheet, a peeling layer of wax-based resin or silicone-based resin is placed on the back surface of the support 2 as shown in I. 5 or laminated with release paper coated with wax-based resin or silicone-based resin to form a long sliding object, or cut into a predetermined shape in advance and stack them for storage. The release layer 5 is not limited to the back surface of the support 1, and a release paper 6 may be laminated on the surface of the supporting layer 2, as shown in FIG. The purpose of this peeling layer is to prevent the support layers 3 and 4 from sticking together due to development of adhesive properties due to moisture absorption, pressure, temperature rise, or the like.

Next, to explain the case where the present invention is used as a seeding sheet, a seeding sheet 1 is cut to the dimensions of the seedling box after storing a certain amount of the bed adjusted for seedling raising into a seedling growing box. (If a release paper 6 is laminated on the surface of the support layer 3, after peeling off the release paper 6), press the surface on which the support layer 3 is formed onto the surface of the seeds in the seed box. Alternatively, seeds are scattered from the upper surface of the support layer 3 to make the seeds adhere to and carry on the support layer 3, the seeding sheet 1 is placed on the floor of the seedling box, and the seeding sheet 1 surface is After covering the area with the specified soil, water the area and complete the sowing process.

In addition, when the supporting layer 3 uses a water-activated adhesive, after lightly moistening the supporting layer 3 with water, the surface on which the supporting layer 3 is formed is placed inside the seed box. By pressing the seeds against the surface of the seeds or by applying force on the surface on which the support layer 3 is formed, and gently shaking off excess seeds, only the seeds that have adhered to the support layer 3 will be supported on the seeding sheet 1. (The same holds true for the dot-shaped support layer 4).

In addition, when the support layer 3 uses a heat-sensitive adhesive, the entire surface of the seeding sheet 1 is heated to a temperature higher than the temperature at which the heat-sensitive adhesive exhibits adhesion. When a pressure-sensitive adhesive is used, the surface on which the carrier layer 3 is formed is strongly pressed against the seed surface of the seed box, so that each carrier layer 3 adheres and supports the seeds.

When raising seedlings with the seeding sheet 1 according to the present invention, the seedlings are grown according to the turtle pattern, so the seedlings are uniform and not densely packed like in conventional seedling boxes, and can grow in an orderly manner. It can grow large, firm seedlings, which is extremely advantageous for transplanting in cold regions or under extreme weather conditions.

In addition, in the present invention, the supporting layers 3 and 4 are formed so that they can be sown in accordance with the horizontal pitch movement of the implantation type of various rice transplanting machines, so scraping by the rice transplanting machine is easy, and There is almost no damage caused by mechanical claws.

Furthermore, since the support of the present invention decomposes easily after being transplanted into a rice field, it does not hinder the growth of crops at all, and is not only useful for growing seedlings for paddy rice, but also for cultivating 'satsuna, flowers, etc. It can also be used for raising seedlings.

As described above, the present invention can achieve uniform growth of seedlings without crowding, making it possible to grow large seedlings.It is also possible to grow seedlings that can withstand cold regions and abnormal weather conditions. It is possible to grow healthy seedlings without damage caused by.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing one embodiment of the present invention, and FIG.
FIG. 3 is a plan view of another embodiment of the present invention, FIG. 4 is a sectional view showing a release layer formed on the back surface of the support, and FIG. 5 is a release paper on the surface of the support layer. FIG. 1: Seeding sheet, 2: Sheet-like support, 3.4: Support layer, 5: Release layer, 6: Release paper. Patent Applicant: Oji Paper Co., Ltd. Japan Paper and Pulp Trading Co., Ltd. Agent: Rikichi Kawa Figure 1 Figure 2 Figure 3 Figure 4 Figure 5-

Claims (1)

[Claims] A seeding sheet characterized by being formed by laminating layers.