JPH08149929A - Sheet for laying on farmland - Google Patents

Abstract

PURPOSE: To obtain the subject sheet facilitating its setting operation, capable of shortening time of the operation, excellent in durability, and capable of promoting crop raising, by furnishing cylindrical water reservoirs on the side edges of a sheetlike material such as a nonwoven fabric comprising synthetic resin continuous filaments. CONSTITUTION: This sheet for laying on a farmland is obtained by providing cylindrical water reservoirs 3a, 3b on the side edges of a sheetlike material such as a nonwoven fabric (pref. 7-30g/m<2> in weight) comprising synthetic resin continuous filaments like of polyester, polyamide or PP, synthetic resin film (pref. 60-200μm in thickness) or nonwoven fabric made by splitting a film into fibers.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a farmland laying sheet that directly covers the farmland to promote the growth of planted crops.

[0002]

2. Description of the Related Art Generally, a sheet for laying farmland is applied directly on the field after sowing to keep heat, keep water, prevent frost, prevent birds, and prevent insects, and promote germination, complete germination, and initial growth of crops. In addition, it is used to adjust the growth rate by selecting the presence or absence of covering, and to adjust the shipment of crops.

As a sheet for laying agricultural land, a film made of polyvinyl alcohol, polyethylene or the like is made into a non-woven fabric by splitting fibers, or recently, a thin film made of synthetic fiber filament mainly composed of polyethylene, polypropylene, polyester or the like. Nonwoven fabric is used.

When covering the field with this farmland laying sheet,
A method of fixing the edge of the seat with earth and sand, a metal stopper, etc. is generally used. However, with fixing methods such as earth and sand, fasteners, etc., thin sheets for farmland laying are generally torn at the edges due to the desorption work of the sheets when thinning the crops, the influence of wind, etc. It took a lot of time and labor to install and remove, and there were problems such as poor workability.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and is a sheet for laying farmland, which can be fixed with good workability without using earth and sand, fasteners or the like. It is intended to provide.

[0006]

SUMMARY OF THE INVENTION The present invention achieves the above object and has the following configuration. That is, the present invention is a nonwoven fabric composed of synthetic fiber filaments,
It is intended to provide a farmland laying sheet having a structure in which a cylindrical water reservoir is provided at a side edge portion of a sheet-shaped material such as a synthetic resin film or a nonwoven fabric obtained by splitting the film into a fiber. Hereinafter, the present invention will be described in detail with reference to the drawings.

FIG. 1 is a perspective view showing an example of the agricultural land laying sheet of the present invention, and FIG. 2 is a transverse sectional view taken along the line AA of the sheet of FIG. The farmland laying sheet 1 of the present invention is
It has a structure in which water storage sections 3a and 3b are provided on both side edges of the farmland covering section 2.

The farmland laying sheet 1 is composed of a non-woven fabric made of synthetic fiber filaments, a synthetic resin film, a non-woven fabric obtained by splitting the film into fibers. As the material of the synthetic fiber filament, polyester, polyamide, polypropylene or the like is used. As the material of the film, polyvinyl alcohol, polyethylene, polypropylene, polyester or the like is used.

The basis weight of the agricultural laying sheet is not particularly limited, but the lighter the weight of the crop, the less the burden on the crop.
/ M ² is preferable. Further, in the case of a film, a film having a thickness of 60 to 200 μm is preferable in terms of strength and lightness.

Each of the water storage portions 3a and 3b has a cylindrical side edge portion of the agricultural land laying coating portion 2 and an impermeable film provided on the inner surface thereof. The means for forming the water storage portions 3a, 3b is not limited, but when non-woven fabric is used for the sheet, a water-impermeable film such as a polyethylene film, a polypropylene film, or a polyester film, or a water-impermeable material is used at the end. A method of laminating sheet-like materials, folding them back so that the film is on the inside, and bonding the adhesive parts 4a and 4b to make the ends cylindrical, or a generally impermeable cylinder. For example, a method of sticking the object on the edge of the nonwoven fabric is used.

In the present invention, the inner circumference of the cylindrical water storage portions 3a, 3b is not particularly limited, but is preferably 5 to 40 cm. If it is less than 5 cm, the amount of water injected is small, the side edge is relatively lightweight, and the agricultural land laying sheet is easily turned over by wind or the like, which is not desirable. Further, if it exceeds 40 cm, the amount of injected water becomes unnecessarily large, which makes work such as draining difficult.

The agricultural land laying sheet 1 according to the present invention is directly covered with a field or the like at the time of covering work, and then water is injected into the water storage portions 3a and 3b at the side edges, and after the injection, the injection port is folded back and clipped. It is used by stopping at etc. Also, when thinning or removing the crops, it is removed by draining water from the inlet.

In the agricultural land laying sheet of the present invention, the covering work is carried out by injecting liquid water from the injection port instead of the conventional earth and sand or the metal stopper as described above. Such work is not required, and the seat is not likely to be damaged by the metal fittings, etc., and the detaching work can be performed efficiently and easily, and at the same time, the durability of the seat can be improved.

[0014]

If the tubular water storage portions 3a3b are provided at the side edges of the sheet-like material as in the farmland laying sheet of the present invention, water is poured into the water storage portions 3a, 3b when the sheet 1 is laid. It can be easily laid as shown in Fig. 3 only by closing the inlet, and at the time of removal, it can be removed simply by draining water from the inlet, improving workability and damage to the sheet. Can also be prevented.

[0015]

EXAMPLES The workability and the like when laying the sheet of the present invention will be specifically described below with reference to the examples. The performance evaluation in the examples was performed by the following method.

(1) Workability A laying test was conducted by 5 workers, and the work was judged according to the following criteria. ◎: Good workability (3 or more people have good workability) ×: Poor workability (3 or more people have bad workability) △: Normal workability (other than the above)

(2) Appearance Regarding the appearance of the agricultural land laying sheet after the exposure test for one month, the sheet breaking and the covering state of the field were evaluated as follows. Sheet tear (excluding those that occurred when using the fasteners) ◎: No sheet tear △: Tear 2 places or less ×: Tear 3 places or more Covered condition of field ◎: No cover swelling ×: Cover There is a turn over of the department

Example 1 A polyethylene film is attached to both ends of a sheet having a basis weight of 15 g / m ^{2 which} is composed of a core-sheath yarn having polyester as a core and polyethylene as a sheath, and an inner circumference of 20 cm at both ends.
Using the sheet shown in FIG. 1 which was processed so as to have the cylindrical portion, the sheet was detached and attached to a field having a width of 150 cm and a length of 15 m. Further, an exposure test was conducted for one month after the above work.

Comparative Example 1 Using the sheet having a basis weight of 15 g / m ² used in Example 1,
Sheets were removed and attached to a field 150 cm wide and 15 m long. However, the fasteners that have been used for the past were used at 1-m intervals to fix the sheets, and sediment was also deposited. Further, an exposure test was conducted for one month after the above work.

Comparative Example 2 Using the sheet having a basis weight of 15 g / m ² used in Example 1,
Sheets were removed and attached to a field 150 cm wide and 15 m long. However, only the metal fasteners that have been conventionally used were used at 1 m intervals for fixing the seat. Further, an exposure test was conducted for one month after the above work.

Comparative Example 3 Using the sheet having a basis weight of 15 g / m ² used in Example 1,
Sheets were removed and attached to a field 150 cm wide and 15 m long. However, only the sediment was deposited to fix the sheet. Further, an exposure test was conducted for one month after the above work.

The performance of the present invention and the agricultural land laying sheet for comparison were evaluated, and the results are also shown in Table 1.

[0023]

[Table 1]

As is clear from Table 1, the farmland laying sheet of the present invention had good workability, was not easily broken, and had a good covering condition.

[0025]

[Effects of the Invention] When the farmland laying sheet of the present invention is used,
The durability of the seat is increased, the fixing work is easy, and the working time can be shortened.

[Brief description of drawings]

FIG. 1 is a perspective view of a farmland laying sheet of the present invention.

FIG. 2 is a cross-sectional view of the agricultural land laying sheet of FIG. 1 taken along the line AA.

FIG. 3 is a transverse cross-sectional view showing a state in which the farmland laying sheet of the present invention is laid on farmland.

[Description of sign]

 1 Agricultural land laying sheet 2 Agricultural land covering part 3 Water storage part 4 Adhesive part

Claims (1)

[Claims] 1. A non-woven fabric made of synthetic fiber filaments,
A farmland laying sheet having a structure in which a cylindrical water reservoir is provided at a side edge portion of a sheet-like material such as a synthetic resin film or a nonwoven fabric obtained by splitting the film into fibers.