JPH11113424A - Protection of seedling and film laying for seedling protection - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the protection for seedlings that can inhibit their leaves from being burnt by the high temperature in jury and can promote the cultivation due to its heat insulation effect as well as the laying method for the protection film that can efficiently and surely lay the protection film and the tube to be used for protecting seedlings. SOLUTION: The mulching film F is laid on the ridge U and seedlings P are transplanted from the openings bored on the mulching film F to the ridge U. Then, the seedlings P are covered with the protection film 1 extending in the longitudinal direction of the ridge U so that the protection film may form the space for seedling growth between the protection film 1 and the mulching film F and the side edges of the protection film are fixed the places near the slope of the ridge. At this time, a tube 3 made of a synthetic resin is arranged in the longitudinal direction of the ridge between the protection film 1 and the mulching film F on the upper face of the ridge U and air is fed into the tube 3 to inflate the protection film 1 and form the space 31 beneath the protection film 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a method for protecting planted seedlings and a method for laying a protective film.

[0002]

2. Description of the Related Art Generally, when cultivating tobacco, taro and the like, a mulching film F having an opening f provided partially on the upper surface of the ridge U as shown in FIG. The seedlings P are planted in the ridges U. As an apparatus for spreading and covering such a mulching film F on a ridge U, those described in Japanese Utility Model Publication No. 5-2066 and Japanese Utility Model Publication No. 5-2067 are known.

[0003] By merely covering the ridges with the mulching film, the ridges are kept warm by the mulching film, but the planted seedlings are exposed to the wind and rain, so that their growth is delayed, and in the early spring they suffer from frost damage. there were.

Therefore, as shown in FIGS. 6 and 7, Japanese Unexamined Patent Publication (Kokai) No. 7-111834 discloses that a seedling P is planted in a ridge U from an opening f provided in a mulching film F coated with the ridge U. A method for protecting seeds and seedlings, in which an adhesive tape 2 is attached so that an adhesive layer protrudes from a side edge portion, and a protective film 1 provided with a folded portion 11 in a longitudinal direction is attached to a mulching film F with the adhesive tape 2; A roller rotatably supported on the frame, and a bearing portion erected from the frame, a protective film wound body is rotatably fitted to the bearing portion, and the protective film is wound around the roller. A machine for unwinding a protective film is disclosed.

According to the protective film described in the above-mentioned Japanese Patent Application Laid-Open No. Hei 7-111834, the protective film can be securely adhered and fixed to the mulching film by the adhesive tape provided on the side edge portion of the protective film, and the seedling grows. Accordingly, the folded portion of the protective film is not lifted and does not hinder the growth. However, the space formed between the protective film and the mulching film is not enough,
As can be seen in FIG. 7, the leaves of the seedlings come into direct contact with the protective film during the initial growth stage, which increases the film temperature due to sunlight and burns the high-temperature damage due to the lens effect of water droplets condensed on the inner surface of the protective film. There is also a risk of causing it.

[0006]

DISCLOSURE OF THE INVENTION The present invention solves the above-mentioned conventional problems, prevents leaf burning due to high temperature injury, and promotes cultivation by a heat retaining effect, and a protective film used for protecting seeds. It is an object of the present invention to provide a method for laying a protective film that can efficiently and surely lay a protective film.

[0007]

According to the method for protecting seeds and seedlings of the present invention, a mulching film is laid so as to cover the ridges, and the seedlings are planted on the ridges from the rows of apertures provided in the mulching film. A method for protecting seedlings by covering seedlings so that voids for seedling growth can be formed between them and a mulching film with a protective film extending in the longitudinal direction of the seedlings, and fixing the side edges of the protective film near the slopes of the ridges. Further, a synthetic resin tube (hereinafter simply referred to as a tube) is further provided in the longitudinal direction of the ridge between the protective film and the mulching film on the upper surface of the ridge, and air is blown into the tube to inflate the tube. I do.

[0008] The material of the mulching film and the protective film is not particularly limited, but, for example, soft polyvinyl chloride, polyethylene, polypropylene and the like can be used. In order to be able to form a cavity for seedling growth, it is preferable to allow the protective film to have slack in the width direction, for example, by providing a folded portion that is continuous in the direction along the ridge, that is, in the longitudinal direction. .

As the pressure-sensitive adhesive layer provided on both side edges of the protective film, a pressure-sensitive pressure-sensitive adhesive is preferably used. For example, as shown in FIG. Examples thereof include ones which are partially adhered from both side edges, those which are adhered with a double-sided adhesive tape, those which are coated with an adhesive in a belt shape, and the like. If necessary, a release paper may be laminated on the pressure-sensitive adhesive layer, and may be peeled off when used.

[0010] The tube disposed in the longitudinal direction of the ridge between the protective film and the upper surface of the ridge is swelled by introducing air thereinto, whereby the protective film is lifted and an appropriate amount of space is provided between the protective film and the upper surface of the ridge. Since the gap is formed, the lower side of the tube may be placed directly on the ridge, or may be placed on the mulching film.

The appropriate gap means a gap for assisting the growth of the seedling without causing burning or the like due to the seedling coming into contact with the protective film in the early stage of the growth of the seedling. But,
Since the air in the tube is not directly affected by the outside air temperature, even if the seedlings touch the tube, they are not affected by the high or low temperature of the outside air. The tubes are arranged at positions along the rows of the seeds so as not to hinder the growth of the seeds.

The tube may be made of the same material as the mulching film or the protective film, and the thickness may be appropriately set in consideration of workability, cost and the like.
One end of the tube is closed and air is blown from the other end by a blower or the like to expand the tube. The degree of expansion may be determined according to the growth of the seed and seedling. After inflation, close the mouth of the tube to prevent air leakage.

The diameter of the tube may be appropriately selected according to the type of seed and seedling, the width of the ridge, and the like. The number of tubes may be one, but both sides of the seed and seedling may be selected according to the width of the ridge and the number of rows of planting. May be arranged side by side.

Next, in the method for laying a seedling-protecting film according to the present invention, an adhesive layer is provided on both side edges supported by a holder installed on the unfolding machine while moving the unfolding machine over the opening row. A protective film wound body and a tube wound body having
The tube is located between the mulching film film covered with the ridges and the protective film, and is protected by the adhesive layer while being unrolled while unrolling the protective film and the tube so that the adhesive layer faces the ridge surface. The film is fixed to a mulching film.

The unfolding machine used in the present invention is not particularly limited in its structure, but has a holder capable of rotatably supporting a protective film wound body and a synthetic resin tube wound body. Any material can be used as long as the tube can be paid out while moving over the provided row of holes, and at the same time, the protective film can be drawn out and laid on the tube.

[0016] The method of supporting the wound body by the holder mounted on the unfolding machine may be to support the wound body itself, or to support the wound body by using the core of the wound body to protect the wound body. It suffices if there is no problem in feeding the film or tube.
Further, the protective film winding body and the tube winding body may be directly overlapped and supported by one holder, or may be independently supported by separate holders. In any case, it is necessary to pay out the tube so that the tube is covered with the protective film when laid on the ridge surface.

The protective film covers the entire row in which seeds and seedlings are planted regardless of the width of the ridge.
It is necessary to set the tube in the deployment machine so that it is not located directly above the seedling. The number and position of tube rolls to be set in the holder can be appropriately selected depending on the ridge width, the number of seeding plants and the like.

(Action) According to the method for protecting seeds and seedlings of the first aspect, a tube is provided in the longitudinal direction of the ridge between the protective film and the mulching film on the upper surface of the ridge, and air is fed into the tube. Since the swelling is performed, the protection film is lifted by the swelling tube, and a gap for seedling growth is reliably formed between the tube and the upper surface of the ridge. The seedlings are kept warm by the voids formed in this way and can grow smoothly without suffering from wind damage and frost damage, and the seedlings in the early growth do not directly touch the protective film, so leaf burning due to high temperature damage Can be prevented.

According to the method for laying a seed and seedling protective film according to the second aspect of the present invention, the tube is protected from the wound body supported by the holder by moving the developing machine which supports the protective film wound body and the tube wound body on the holder. The film is fed out at the same time, and the tube is provided between the protective film and the upper surface of the ridge. At the same time, the protective film is fixed to the previously laid mulching film by the adhesive layers provided on both side edges of the protective film.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiments of the present invention will be described below with reference to the drawings. (Embodiment 1) FIG. 1 is an explanatory view showing an embodiment of a method for protecting seeds and seedlings of the present invention, wherein a mulching film F covering a ridge U is shown.
Seedlings P are planted through openings f provided at appropriate intervals in the upper part of. As shown in the perspective view of FIG. 2, the protective film 1 has a folded portion 11 formed in its longitudinal direction, and has a polypropylene film (thickness of 4) on both side edges.
0 μm) as a base material, about half of the adhesive surface is adhered with the adhesive surface facing down, and the remaining approximately half of the adhesive surface is exposed to the lower side. Reference numeral 12 denotes ventilation small holes provided at appropriate intervals in the longitudinal direction of the protective film 1. If there is no risk of high-temperature damage, there is no need to provide these small holes.

In the illustration of FIG. 1, the protective film 1 is adhered to the mulching film F on both sides by an adhesive tape 2, and the protective film 1 and the mulching film F
This shows a state in which the polyethylene film 3 (thickness: 15 μm) disposed in the longitudinal direction of the ridge U is filled with air to lift the protective film 1, thereby forming the seedling growth gap 31.

286 taro are planted as described above,
The subsequent growth status was examined and the results are shown in Table 1.

(Embodiment 2) FIG. 3 is a side view showing an embodiment of a method for laying a seed and seedling protection film of the present invention, and FIG. 4 is a plan view of the developing machine in FIG. However, in FIG. 4, the protective film winding body 10 and the tube winding body 30 are omitted. FIG.
In FIG. 4, reference numeral 4 denotes a developing machine. The developing machine 4 includes a pair of left and right guide frames 6, and a pressure roller rotatably supported at the front part of the guide frames 6 in a cantilever manner. 8, a frame block 5 for connecting the rear part of the guide frame 6, a lever 7 whose base is pivotally supported at both left and right ends of the frame block 5, and a cantilever at the rear part of the lever 7. A pair of driven rollers 9 rotatably supported in a rotatable manner, a handle 50 swingably connected to the center of the frame block 5, and a spring device provided between the guide frame 6 and the lever 7. 51. The width of the unfolding machine 4 is set to such a size that the left and right pressure rollers 8 and the driven rollers 9 can move across the seedlings planted on the ridge.

A holder 61 is provided upright on the guide frame 6. The guide groove 6 into which the protection film and the core of the tube winding body can be inserted is provided in the holder 61.
2 are provided, and the guide groove 62 is formed at a depth such that the outer peripheral edge of the pressure roller 8 that is supported in a cantilever manner can be seen from the side. FIG. 3 shows that the core 10R of the protective film winding body 10 wound with the adhesive surfaces of the adhesive tapes on both side edges on the lower side of the holder 61, and the core 30R of the tube winding body 30 fitted thereon. In this state, the two winding bodies 10 and 30 are stacked and supported with the winding directions reversed.

The tube winding body 30 is arranged along a row in which seeds and seedlings are arranged. From the tube roll 30 to the tube 3, and from the protective film roll 10R to the protective film 1
At the same time, the side edge of the protective film 1 is guided counterclockwise below the pressure roller 8, and the tube 3 is passed under the protective film 1. Next, handle 5
When the developing machine 4 is advanced by pushing 0, the protective film 1 is fixed to the mulching film while the both sides are pressed by the pressure roller 8, so that the tube 3 and the protective film 1 are sequentially fed out. Become. At this time, since the two winding bodies 30 and 10 are inserted with the winding directions reversed, they can rotate in the opposite directions in synchronization with the rotation of the pressure roller 8 without being hindered from rotating with each other.

By the movement of the developing machine as described above, the folding portion of the protective film 1 covers the seed and the seedlings, and at the same time, the pressing roller 8 presses both side edges of the protective film 1, that is, the adhesive tape to fix the protective film 1 to the mulching film. Can be.

(Comparative Example 1) Taro was planted in the same manner as in Example 1 without using a protective film and a tube, and the growth status was examined. Table 1 shows the results.

Comparative Example 2 Taro was planted in the same manner as in Example 1 except that a protective film was used and a tube was not used, and the growth status was examined. Table 1 shows the results.

[0029]

[Table 1]

[0030]

According to the method for protecting seedlings of the present invention, the protective film is lifted up by the tube filled with air and inflated, and the seedling growing gap formed between the upper surface of the ridge and the seedling growing seedling. Does not directly touch the protective film, so that leaf burning due to high-temperature damage can be prevented. In addition, the seeds and seedlings are kept warm by the formed voids and grow smoothly without being damaged by wind and frost. As a result, it is possible to increase the yield. Furthermore, according to the method for laying a seed and seedling protective film of the present invention, while arranging a tube on a ridge surface covered with a mulching film, covering the ridge surface with a protective film and simultaneously fixing the protective film to the mulching film. The process can be performed efficiently and reliably.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing an embodiment of a method for protecting seeds and seedlings of the present invention.

FIG. 2 is a perspective view showing an example of a protective film.

FIG. 3 is a side view showing an embodiment of the method for laying a protective film of seeds and seedlings of the present invention.

FIG. 4 is a plan view of the developing machine in FIG. 3;

FIG. 5 is an explanatory view showing a conventional seedling planting state.

FIG. 6 is an explanatory view showing a conventional method for protecting seeds and seedlings.

FIG. 7 is an explanatory view showing the state of growth of a conventional seed and seedling.

[Explanation of symbols]

 1: Protective film 2: Adhesive tape 3: Tube 4: Expander 5: Frame block 6: Guide frame 7: Lever 8: Pressure roller 9: Follower roller 10, 30: Wound body 10R, 30R: Core 11: Fold Part 31: Void part 50: Handle 51: Spring device 61: Holder 62: Guide groove F: Mulching film f: Opening U: Ridge

Claims (2)

[Claims] 1. A mulching film is laid so as to cover a ridge, seedlings are planted on a ridge from a row of apertures provided in the mulching film, and a protective film extending in the longitudinal direction of the ridge between the mulching film and the mulching film. In the method of covering the seedlings so as to be able to form a void for seedling growth and protecting the seedlings by fixing the side edge of the protective film near the slope of the ridge, between the protective film and the mulching film on the upper surface of the ridge. , Further arrange a synthetic resin tube in the longitudinal direction of the ridge,
A method for protecting seedlings, wherein air is blown into the tube to inflate it. 2. A protective film winding body and a synthetic resin tube winding body having an adhesive layer on both side edges supported by a holder installed on the developing machine while moving the developing machine across the row of apertures. The synthetic resin tube is located between the mulching film film covered with the ridge and the protective film, and the protective film and the synthetic resin tube are rewound so that the adhesive layer faces the ridge surface. A method of laying a seed and seedling protection film, wherein the protection film is fixed to the mulching film by the adhesive layer while being developed.