How to install a cooling system for cultivation

Abstract

To provide a cooling apparatus for cultivation and a construction method of a cooling apparatus for cultivation in which cooling effect by evaporative latent heat using a water-absorbing sheet can be enhanced.SOLUTION: A cooling apparatus for cultivation of the present invention cools an area around a bottom part of a plant 1 by evaporative latent heat from a water-absorbing sheet 10, where a water supply pipe 20 is installed at a predetermined height from a ground surface 2, a long-sized sheet is used as the water-absorbing sheet 10, one long side 10u of the water-absorbing sheet 10 is supported in a separated state from the ground surface 2, and a water-receiving part 11 for receiving water discharged from the water supply pipe 20 is formed in a part of the water-absorbing sheet 10.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a method for installing a cooling device for cultivation that cools the area around the base of a plant using latent heat of evaporation from a water-absorbing sheet. [Background technology]

[0002] Commercially available cooling devices include heat pumps that collect heat from natural sources, mist generators that use the heat of vaporization of water, or pad and fan systems. In asparagus cultivation, a method has been disclosed in which water is sprayed over the entire ridge using a mist generator and air is blown toward the center of the ridge using an air blower, thereby cooling the ridge surface and the heat of evaporation from the mist (Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2020-198860 Summary of the Invention [Problem to be solved by the invention]

[0004] Commercially available cooling devices are expensive and only function as cooling devices, so they require a separate cultivation device, which also requires external power and fuel to operate. Furthermore, the method disclosed in Patent Document 1 also requires a mist generator and an air blower.

[0005] An object of the present invention is to provide a method for constructing a cooling device for cultivation that can enhance the cooling effect due to the latent heat of evaporation using a water-absorbing sheet. [Means for solving the problem]

[0006] The method for installing a cooling device for cultivation of the present invention as set forth in claim 1 is a method for installing a cooling device for cultivation that cools the area around the base of a plant (1) by using the latent heat of evaporation from a water-absorbent sheet (10), and includes the steps of: arranging water supply pipes (20) at a predetermined height from the ground along both sides of a ridge in which the plant (1) is to be cultivated; arranging supports (40) at predetermined intervals along the water supply pipes (20); installing water-absorbent sheet receiving portions (50) on the supports (40); installing wires (60) between the water-absorbent sheet receiving portions (50); 10 A long sheet is used as the water absorbent sheet 10, and one long side of the water absorbent sheet 10 is attached to the water supply pipe 20, The water absorbent sheet 10 is loosened or folded by the water absorbent sheet receiving portion 50 and the wire rod 60 to form a water receiving portion 11; The water supply pipe 20 Water released from towards the ground for irrigation; part The water is received by the water receiving portion 11, and the water absorbent sheet 10 retains the water. It is characterized by: The present invention described in claim 2 is characterized in that, in the construction method of the cultivation cooling device described in claim 1, the ridges are formed by a frame plate 70, forming a frame plate type high ridge cultivation method, and the water supply pipe 20 and the water absorption sheet 10 are arranged along the frame plate 70. The present invention as set forth in claim 3 is characterized in that in the method for installing a cooling device for cultivation as set forth in claim 1 or claim 2, the plant 1 is asparagus. The present invention as set forth in claim 4 provides a method for constructing a cooling device for cultivation as set forth in any one of claims 1 to 3, wherein the cooling device includes an irrigation tube 31, an electromagnetic valve 32 for controlling the flow of water through the irrigation tube 31, and a timer 33 for operating the electromagnetic valve 32. in The irrigation tube 31 、 It is characterized in that it is used as the water supply pipe 20. [Effects of the Invention]

[0007] According to the present invention, the water absorbent sheet can retain water over a wide area without causing the ground to become overly wet, thereby enhancing the cooling effect of the base of plants due to the latent heat of evaporation. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a block diagram of a cooling device for cultivation according to an embodiment of the present invention; [Figure 2] Photograph showing the installation state of the cooling device for cultivation according to this embodiment [Figure 3] Photograph showing the installation state of the cooling device for cultivation according to this embodiment [Figure 4] Photograph showing the frame-plate high-ridge cultivation method [Figure 5] FIG. 1 shows the effect of the cooling device for cultivation according to this embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0009] A method for installing a cooling device for cultivation according to a first embodiment of the present invention includes the steps of: arranging water supply pipes at a predetermined height from the ground along both sides of a ridge in which plants are grown; arranging supports at predetermined intervals along the water supply pipes; installing water absorbent sheet receiving sections on the supports; installing wire rods between the water absorbent sheet receiving sections; using a long sheet as the water absorbent sheet; attaching one long side of the water absorbent sheet to the water supply pipes; The water-absorbing sheet is loosened or folded by the water-absorbing sheet receiving portion and the wire rod to form a water-absorbing sheet receiving portion; Water released from the water supply pipe is released onto the ground for irrigation, part The water is received by the water receiving section, and the absorbent sheet retains the water. It is something. According to this embodiment, the cultivation cooling device can be easily installed in the ridges where plants are grown, and by placing water supply pipes and water-absorbing sheets on both sides of the ridges where plants are grown, the cooling effect at the base of the plants due to the latent heat of evaporation can be further enhanced.

[0010] The second embodiment of the present invention is a construction method of a cooling device for cultivation according to the first embodiment, in which a frame plate type high ridge cultivation method is used in which the ridges are formed by frame plates, and water supply pipes and water-absorbing sheets are arranged along the frame plates. According to this embodiment, it is possible to easily apply the method to ridges formed by the frame-type high ridge cultivation method.

[0011] A third embodiment of the present invention is the method for installing a cooling device for cultivation according to the first or second embodiment, wherein the plant is asparagus. This embodiment is suitable for growing asparagus.

[0012] A fourth embodiment of the present invention is an irrigation device having an irrigation tube, an electromagnetic valve for controlling water flow through the irrigation tube, and a timer for operating the electromagnetic valve, in the method for installing the cooling device for cultivation according to any one of the first to third embodiments. in Irrigation tube 、 It is used as a water supply pipe. According to this embodiment, a cooling device for cultivation can be realized by utilizing an irrigation device, so that capital investment and operating costs can be kept low. [Example]

[0013] A cooling device for cultivation according to one embodiment of the present invention will now be described. FIG. 1 is a diagram showing the configuration of the cooling device for cultivation according to this embodiment. The cooling device for cultivation according to this embodiment cools the area around the base of the plant 1 by using the latent heat of evaporation from the water-absorbent sheet 10. For installation purposes, it is suitable to use a long sheet as the water-absorbent sheet 10. For example, the water-absorbent sheet 10 manufactured by Toyobo Co., Ltd. under the trade name Germguard (registered trademark) / water-retaining sheet can be used.

[0014] The cooling device for cultivation according to this embodiment has a water supply pipe 20 installed at a predetermined height from the ground 2, one long side 10u of the water absorbent sheet 10 supported with a space from the ground 2, and the other long side 10d of the water absorbent sheet 10 abutting against or buried in the ground 2, and a water receiving section 11 formed in a part of the water absorbent sheet 10 to receive water discharged from the water supply pipe 20. The water receiving portion 11 can be formed by loosening the water absorbent sheet 10 or by folding the water absorbent sheet 10 . Water is discharged intermittently from the water supply pipe 20. For example, water is discharged for two minutes per hour between 9:00 and 16:00. By discharging water intermittently from the water supply pipe 20 in this manner, water can be discharged more frequently with a small amount of water discharged, and the cooling effect can be maintained efficiently.

[0015] The cooling device for cultivation according to this embodiment can utilize an irrigation device 30. The irrigation device 30 generally has an irrigation tube 31, an electromagnetic valve 32 that controls the flow of water through the irrigation tube 31, and a timer 33 that operates the electromagnetic valve 32, and the irrigation tube 31 can be used as the water supply pipe 20. The irrigation tube 31 used as the irrigation device 30 is generally installed on the ground 2, but when the irrigation tube 31 is used as the water supply pipe 20, it is installed at a predetermined height from the ground 2. Furthermore, when the irrigation tube 31 is used as the water supply pipe 20, the water discharged from the irrigation tube 31 is discharged toward the ground 2 for irrigation, and some of the water is received in the water receiving portion 11.

[0016] The cooling device for cultivation according to this embodiment is suitable for cultivating asparagus, but can also be applied to cultivating eggplant and other plants. In particular, when cultivating asparagus, it is preferable that the height of the water-absorbent sheet 10 be in the range of 10 cm to 30 cm. If the height of the water-absorbent sheet 10 is less than 10 cm, the cooling effect due to the latent heat of evaporation may decrease, and if it exceeds 30 cm, agricultural work may be hindered.

[0017] Figures 2 and 3 are photographs showing the installation state of the cultivation cooling device according to this embodiment, where Figure 2(a) shows the main parts of the cultivation cooling device according to this embodiment, Figure 2(b) shows the cultivation cooling device in the middle of installation, Figure 3(a) shows the cultivation cooling device as seen from the inside (row side), and Figure 3(b) shows the cultivation cooling device as seen from the outside. The water supply pipes 20 are arranged along both sides of the furrows in which the plants 1 are grown. The supports 40 are arranged at predetermined intervals along the water supply pipes 20. Water absorbent sheet receiving parts 50 are attached to the supports 40. The water absorbent sheet receiving parts 50 have U-shaped hook parts. Wires 60 are attached between the water absorbent sheet receiving parts 50. One long side 10u of the water absorbent sheet 10 is attached to the water supply pipe 20, and the water receiving portion 11 is formed on the water absorbent sheet 10 by the water absorbent sheet receiving portion 50 and the wire rod 60. In this way, the cooling device for cultivation according to this embodiment can be easily installed in the ridges on which the plants 1 are cultivated. In addition, by arranging the water supply pipes 20 and the water absorbent sheets 10 on both sides of the ridges on which the plants 1 are cultivated, the cooling effect at the base of the plants 1 due to the latent heat of evaporation can be further enhanced.

[0018] Figure 4 is a photograph showing the frame-type raised ridge cultivation method. As shown in FIG. 4, in the frame plate type high ridge cultivation method, ridges are formed by frame plates 70. In the frame plate type high ridge cultivation method as shown in Figure 4, the water supply pipe 20 and the water absorbent sheet 10 are arranged inside (on the ridge side of) the frame plate 70 along the frame plate 70. The cooling device for cultivation according to this embodiment can be easily installed on the ridges used in this frame plate type high ridge cultivation method.

[0019] FIG. 5 is a diagram showing the effect of the cooling device for cultivation according to this embodiment. Figure 5(a) shows the change in soil temperature at a depth of 5 cm in the center of the ridge when the cooling device for cultivation according to this embodiment is installed on both sides of the ridge. Comparative Example 1 shows the case where no cooling device for cultivation is installed. As shown in FIG. 5(a), by installing the cooling device for cultivation according to this embodiment on both sides of the ridges, a cooling effect of approximately 1°C can be obtained. FIG. 5(b) is a photograph showing the main parts of the cooling device for cultivation according to this embodiment, and FIG. 5(c) shows a thermograph at the position shown in FIG. 5(b). Figure 5(d) is a photograph showing the main parts of Comparative Example 2, in which the water-absorbent sheet is installed vertically and no water receiving portion is formed, and Figure 5(e) shows a thermograph at the position shown in Figure 5(d). In FIG. 5(b), the water-absorbent sheet 10 has a wider range of low temperature compared to FIG. 5(d).

[0020] As described above, according to this embodiment, the ground 2 does not become overly wet and the water absorbent sheet 10 can retain water over a wide area, thereby enhancing the cooling effect of the base of the plant 1 due to the latent heat of evaporation. Furthermore, according to this embodiment, the water receiving portion 11 can be formed by loosening or folding the water absorbent sheet 10, and the water absorbent sheet 10 can retain water over a wide range. Furthermore, according to this embodiment, by bringing the other long side 10d of the water-absorbent sheet 10 into contact with the ground 2 or burying it in the ground 2, excess water that may accumulate on the ground 2 can be absorbed by the water-absorbent sheet 10, and the excess water can be utilized as latent heat of evaporation, and the ground 2 can be prevented from becoming overly humid. Furthermore, according to this embodiment, a cooling device for cultivation can be realized by utilizing the irrigation device 30, so that investment in equipment and operating costs can be kept low. [Industrial Applicability]

[0021] The method for constructing a cooling device for cultivation according to the present invention is suitable for cultivating asparagus, but can also be applied to cultivating eggplants and other plants. [Explanation of symbols]

[0022] 1 plant 2 ground 10 Water-absorbing sheet 10u one long side 10d other long side 11 Water receiving section 20 Water supply pipe 30 Irrigation equipment 31 Irrigation tube 32 Solenoid valve 33 Timer 40 pillars 50 Water-absorbent sheet holder 60 wire rod 70 Frame board

Claims

1. A method for installing a cooling device for cultivation that cools the area around the base of a plant by using the latent heat of evaporation from a water-absorbing sheet, Water supply pipes are arranged at a predetermined height from the ground along both sides of the furrows in which the plants are grown; Support posts are arranged at predetermined intervals along the water supply pipe; A water-absorbent sheet receiving portion is installed on the support pole, A wire is placed between the water-absorbent sheet receiving portions, A long sheet is used as the water-absorbing sheet, One long side of the water-absorbent sheet is attached to the water supply pipe; a water receiving portion is formed by loosening or bending the water absorbent sheet using the water absorbent sheet receiving portion and the wire; The water discharged from the water supply pipe is discharged toward the ground for irrigation, and a part of the water is received by the water receiving portion, so that the water absorbent sheet retains the water. A method for constructing a cooling device for cultivation.

2. The ridges are formed by frame plates to form a frame-plate type high ridge cultivation method, The water supply pipe and the water absorption sheet are arranged along the frame plate.

2. A method for constructing the cooling device for cultivation according to claim 1.

3. The plant was asparagus.

3. A method for installing the cooling device for cultivation according to claim 1 or 2.

4. In an irrigation device having an irrigation tube, an electromagnetic valve for controlling the flow of water through the irrigation tube, and a timer for operating the electromagnetic valve, the irrigation tube is used as the water supply pipe. A method for installing the cooling device for cultivation according to any one of claims 1 to 3.

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