JP2009296992A - Agricultural watering tube, and watering method using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an agricultural watering tube capable of preventing adhesion to mulch films so as to exclude watering damage and prevent breakage of mulch films and the agricultural watering tube itself. <P>SOLUTION: This agricultural watering tube 11 is made of a flexible material, and flatly crushed to be laid on a ridge 1. A plurality of water sparkling holes which go through flatted upper and lower tube walls 11a and 11b are made in the tube longitudinal direction, and projecting rows 15 which continue in the tube longitudinal direction are installed in a protruding manner on the surface of at least one of the upper and lower tube walls 11a and 11b. The projecting rows 15 may be installed on the surface of both the upper and lower tube walls 11a and 11b, and preferably, a plurality of the projecting rows 15 are set in parallel in a direction perpendicular to a tube axis. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an agricultural irrigation tube used for irrigation of a field or an agricultural house and an irrigation method using the irrigation tube.

  In upland fields and agricultural houses, irrigation tubes in which water spray holes are provided at regular intervals in a polyolefin-based extruded tube, which is a flexible material, are used. The irrigation tube can be installed by a simple handling of extending the roll body while unrolling it as it is from the roll body that has been flattened and wound up. Since a water pressure of 0.5 to 1.5 atm is applied to the inside of the tube, it is necessary to have a strength sufficient not to puncture with the water pressure, and the thickness of the tube is usually about 0.10 to 0.30 mm (for example, , See Patent Document 1).

  On the other hand, in a field or an agricultural house, in order to promote the growth of vegetables, multi-cultivation is sometimes performed in which soil of straw or vegetable stocks is covered with a polyethylene film (multi-film) or the like. In mulch cultivation, soil temperature rises, sowing time can be advanced, transpiration of water is prevented and soil consolidation is prevented, soil splash is prevented, disease is less likely to occur, and in the case of silver mulch Has the effect of reflecting light and making it difficult for insect pests to lean on.

When the irrigation tube is used in multi-cultivation, the irrigation tube 5 is laid between the ridge 1 and the multifilm 3 as shown in FIG. The irrigation tube 5 is flat in a collapsed state except during irrigation. At the time of irrigation, water is supplied from the end of the tube, and a predetermined water pressure is applied in the tube, so that water can be discharged from the water spray holes 7 and 7.
Japanese Utility Model Publication No. 6-19442

  The irrigation tube 5 is flattened except during irrigation, and the interior is in a state without water. That is, in the irrigation tube 5, the upper surface 5a of a smooth polyethylene tube is in intimate contact with the multi-film 3 placed on the upper surface. In such a state, when the temperature of the multi-film 3 and the irrigation tube 5 becomes high due to strong sunlight irradiation particularly in the summer, the close contact surfaces 3a and 5a are bonded to each other with the help of solidification of intervening water-soluble foreign matters. (Contact) may occur. When water is fed into the irrigation tube 5 in the close contact state, the water spray hole 7 is blocked and water cannot be sprayed, and the local discharge water pressure increases due to the water spray hole 7 being blocked, and the pipe water pressure increases. As a result, the thin multi-film 3 may be torn or the irrigation tube 5 itself may be torn.

  The present invention has been made in view of the above situation, and provides an agricultural irrigation tube capable of preventing adhesion with a multi-film, thereby eliminating irrigation obstacles and preventing damage to the multi-film and the agricultural irrigation tube itself. The purpose is to plan.

Next, means for solving the above problems will be described with reference to the drawings corresponding to the embodiments.
The agricultural irrigation tube according to claim 1 of the present invention is an agricultural irrigation tube 11 made of a flexible material and flattened and laid on the ridge 1.
A plurality of sprinkling holes 13 penetrating the flat upper and lower pipe walls 11a, 11b are formed in the tube longitudinal direction a,
Convex ridges 15 that continue in the tube longitudinal direction a project from at least the upper and lower surfaces of the tube wall 11a.

  In this agricultural irrigation tube, when the irrigation tube 11 is laid between the ridge 1 and the multi-film 3 so that the ridge 15 becomes the surface of the upper tube wall 11 a, the tip of the ridge 15 is attached to the multi-film 3. In contact with each other, in the vicinity of the ridge 15, the multi-film 3 is lifted and does not adhere to the irrigation tube 11. Thereby, a contact area reduces and it becomes difficult to produce close_contact | adherence with the multifilm 3. FIG.

The agricultural irrigation tube according to claim 2 is the agricultural irrigation tube according to claim 1,
The ridges 15 protrude from the surfaces of both the upper and lower tube walls 11a and 11b.

  In this agricultural irrigation tube, even when the multifilm 3 is arranged up and down, such as when the multifilm 3 is overlaid, the tips of the ridges 15 come into contact with the multifilm 3, and the ridges on the upper and lower surfaces of the irrigation tube In the vicinity of 15, the multi-film 3 is separated. Further, when the multi-film 3 is covered only on the upper surface, even if the irrigation tube 11 is twisted and turned upside down, the ridges 15 protruding from the surface of either the upper or lower tube wall 11a, 11b are formed on the multi-film 3. Contact.

The agricultural irrigation tube according to claim 3 is the agricultural irrigation tube according to claim 1 or 2,
The convex strips 15 are provided in parallel with a plurality of strips in parallel with the tube axis orthogonal direction b.

  In this agricultural irrigation tube, the region where the multi-film 3 and the irrigation tube 11A do not contact with each other due to the ridges 15 increases, and the contact area further decreases. Further, according to the configuration in which a plurality of ridges 15 are provided in parallel on both surfaces of the tube walls 11a and 11b, the ridges 15 and 15 of the adjacent winding layers are crushed flat and wound into a disk shape. They are hooked together in the tube width direction and do not slide sideways.

The irrigation method using the agricultural irrigation tube according to claim 4 is an irrigation method using the agricultural irrigation tube 11 made of a flexible material and flattened and laid on the ridge 1.
A plurality of sprinkling holes 13 are formed in the tube longitudinal direction a at least above the flat upper and lower pipe walls 11a and 11b,
Agricultural irrigation tube 11 in which protrusions 15 extending in the tube longitudinal direction a project at least on the surface of the upper tube wall 11a.
Plant F is cultivated and is laid under the multi-film 3 of the cocoon 1 covered with the multi-film 3, and water is supplied to the agricultural irrigation tube 11 for irrigation.

  In the irrigation method using the agricultural irrigation tube, the ridge 15 of the irrigation tube 11 becomes the surface of the upper tube wall 11a on the ridge 1 by laying the irrigation tube 11 under the multi-film 3. The tip of the ridge 15 comes into contact with the multi-film 3. For this reason, the multi-film 3 is lifted in the vicinity of the ridges 15 and is not in close contact with the irrigation tube 11 between the surfaces. Thereby, a contact area reduces and it becomes difficult to produce close_contact | adherence with the multifilm 3. FIG. Then, when water is supplied to the irrigation tube 11, the irrigation tube 11 is deformed into a substantially circular cross section by the water pressure, lifts the multi-film 3, and irrigates the plant F planted in the basket 1 through the water spray hole 13.

  The irrigation method using the agricultural irrigation tube according to claim 5 is characterized in that the plant is cultivated and the straw covered with a multi-film is in an agricultural house.

  In the irrigation method using the agricultural irrigation tube, the multi-film 3 is laid on the ridge 1 in the agricultural house, and the irrigation tube 11 is positioned between the multi-film 3 and the ridge 1. Watering from the sprinkling holes 13 is performed on the plant F planted in 1.

  According to the agricultural irrigation tube according to claim 1 of the present invention, since the protruding strips that are continuous in the longitudinal direction of the tube are provided on the surface of at least one of the flattened tube walls, the protruding strip is the upper tube. If the irrigation tube is laid between the ridge and the multi-film so that it becomes the surface of the wall, the tip of the ridge contacts the multi-film, and the multi-film and the irrigation tube do not come into close contact with each other in the vicinity of the ridge, The contact area is reduced and adhesion is less likely to occur. As a result, the sprinkling holes are not blocked, and when water is supplied, water can be sent out from the sprinkling holes well, and water can be smoothly sprayed. Damage to the film can be prevented.

  According to the agricultural irrigation tube according to claim 2, since the ridges are projected on the surfaces of both the upper and lower tube walls, even when the multi-film is arranged up and down, such as the multi-film overlap. It is possible to prevent adhesion between the upper multi-film and the lower multi-film. Further, when the multi-film is covered only on the upper surface, the irrigation tube is twisted and turned upside down, and even if any tube wall surface is on the upper side, adhesion with the multi-film can be prevented.

  According to the agricultural irrigation tube according to claim 3, since the ridges are provided in parallel with a plurality of ridges in parallel to the direction perpendicular to the tube axis, the region where the multifilm and the irrigation tube do not contact with each other increases due to the ridges. The area is further reduced and adhesion is less likely to occur. In addition, in particular, according to the configuration in which a plurality of ridges are provided in parallel on both sides of the tube wall, when the ridges are flattened and wound into a disk shape, the ridges of adjacent winding layers are in the tube width direction. They are caught by each other, and the collapse of the tube due to the sideways sliding of the tube in the winding axis direction is less likely to occur. As a result, handling properties can be improved.

  According to the irrigation method for an agricultural irrigation tube according to claim 4, the ridge of the irrigation tube becomes the surface of the upper tube wall on the ridge by laying the flat irrigation tube under the multi-film. Thus, the tip of the ridge comes into contact with the multi-film. For this reason, the multi-film is lifted in the vicinity of the ridge, and the irrigation tube and the surfaces do not adhere to each other. Thereby, a contact area reduces and it becomes difficult to produce close_contact | adherence with a multi film. When water is supplied to the irrigation tube, the irrigation tube is deformed into a substantially circular cross section by the water pressure, lifts the multi-film, and the sprinkling holes are not blocked, and the plants planted in the vines from the sprinkling holes are not blocked. On the other hand, water is sent out and irrigation is performed.

  According to the irrigation method using the agricultural irrigation tube according to claim 5, a multi-film is laid on the fence made in the agricultural house, and the irrigation tube is located between the multi-film and the fence. As a result, watering from the sprinkling holes is favorably performed on the plants planted in the fence. In particular, it is possible to satisfactorily perform irrigation under the multi-film, which is performed when irrigation is performed on crops that are not suitable for spray watering, such as crops such as florets and fruit vegetables in an agricultural house.

Hereinafter, preferred embodiments of an agricultural irrigation tube according to the present invention will be described in detail with reference to the drawings.
FIG. 1 is a cross-sectional view of a irrigation tube for agricultural use according to the present invention, and is a cross-sectional view laid between multi-films. FIG. 2 is a perspective view of the irrigation tube for agriculture shown in FIG. FIG. 4 is a cross-sectional view of a non-water supply laid between the basket and the multifilm, and FIG. 5 is a perspective view of the water supply laid between the fence and the multifilm. It is.
As shown in FIG. 1, the agricultural irrigation tube 11 according to the present embodiment is made of a flexible material and crushed flat and laid on the ridge 1. As the flexible material, low density polyethylene, ethylene-vinyl acetate copolymer, or the like can be used as a composition raw material.

  As shown in FIG. 2, a plurality of water spray holes 13 penetrating vertically are formed in the tube longitudinal direction a in the flat upper and lower pipe walls 11a and 11b. The water spray holes 13 are arranged on both sides of the pipe axis orthogonal direction b, and are arranged with a predetermined pitch P shifted by a half pitch so that uniform watering can be performed. The water spray holes 13 are formed by laser light irradiation or punch holes. Laser light is preferable because it can be perforated with high roundness and the amount of discharged water can be made uniform. The watering hole 13 may be drilled through the upper and lower tube walls 11a and 11b as described above, or may be configured to be drilled in either the upper or lower tube wall.

  On at least one surface of the upper and lower pipe walls 11a and 11b of the agricultural irrigation tube 11, a ridge 15 that continues in the tube longitudinal direction is projected. In the present embodiment, as shown in FIG. 3, the ridges 15 project from the upper tube wall 11 a that is the surface facing the multi-film 3. As will be described later, the ridges 15 may be provided on both surfaces of the upper and lower pipe walls 11a and 11b.

  The ridges 15 can be formed with a height of about 0.1 to 1.0 mm and a width of about 1.0 to 5.0 mm. The cross-sectional shape of the ridge 15 in the tube axis orthogonal direction b can be a convex curved shape, a circular arc shape, an elliptical arc shape, an oval shape, or a triangular shape in addition to the quadrangular shape shown in the figure.

  The ridges 15 are preferably provided in parallel with a plurality of ridges in parallel with the tube axis orthogonal direction b. 1 to 15 strips can be provided per 50 mm tube width. In the present embodiment, eleven ridges 15 are provided on one flat tube wall 11a having a diameter of 30 mm. By providing a plurality of ridges 15, a region where the multi-film 3 and the agricultural irrigation tube 11 are not in contact with each other increases. As a result, the contact area is further reduced and adhesion is less likely to occur.

  In the agricultural irrigation tube 11 having the above-described configuration, as shown in FIG. 4, the agricultural irrigation tube 11 is laid between the ridge 1 and the multi-film 3 so that the ridges 15 become the surface of the upper tube wall 11 a. And the front-end | tip of the protruding item | line 15 contacts the multi film 3, and the multi film 3 is lifted in the vicinity of the protruding item | line 15, and it does not contact with the irrigation tube 11. FIG. Thereby, a contact area reduces and it becomes difficult to produce close_contact | adherence with the multifilm 3. FIG.

  Therefore, according to the agricultural irrigation tube 11 according to the above-described embodiment, the protruding strips 15 that are continuous in the tube longitudinal direction a are provided on the surface of at least one of the flattened tube walls 11a. If the irrigation tube 11 is laid between the ridge 1 and the multifilm 3 so that the surface of the upper tube wall 11a becomes the surface of the upper tube wall 11a, the tip of the ridge 15 comes into contact with the multifilm 3, and in the vicinity of the ridge 15, the multifilm 3 and the irrigation tube 11 are not in contact with each other, the contact area is reduced, and adhesion is less likely to occur. As a result, as shown in FIG. 5, the water spray hole 13 is not blocked, and when water is supplied, the water 17 is discharged well from the water spray hole 13, and the water spray can be smoothly performed, and the water pressure in the pipe and the water pressure of the delivery water are more than necessary. It is possible to prevent damage to the irrigation tube 11 itself and the multi-film 3 due to rising.

  Moreover, when the irrigation tube 11 for agriculture crushes a cylindrical tube flatly in a shaping | molding process and deform | transforms into a fold-like long thing, about the crease | fold part which can be formed on both sides, if crushing pressure is made too high, Stress concentration becomes excessive, leading to a decrease in strength at the fold. It is necessary to pay attention to the crushing pressure so as not to cause a decrease in the strength of the crease part, but if this pressure is weak, the tube walls 11a and 11b of the crease part will not be deformed until they are completely adhered to each other due to the elasticity of the raw material resin. , Space remains on both sides and both sides become thicker than the center.

  When a tube with both sides slightly swelled is wound up in length, several hundred layers are rolled up, so the difference in thickness between the sides and the center increases, resulting in a disk shape. The diametrical cross section of the outermost peripheral portion of the wound tube is seen from the tangential direction, and rises on both sides of the tube, and the difference reaches 5 to 6 mm in the case of a tube having a diameter of 30 mm and a length of 200 m.

  Such a wound product has a partial distortion deviation such that the center part with high adhesion mainly causes tightening in the period until use, and the shrinkage force does not work because there is a gap on both sides. By generating, a kind of bending is included. For this reason, it is easy to cause twisting when unrolled and extended in use, and if water pressure is applied, the passage of water is bad at the twisted part, the tube dances, and if it is excessive, it is punctured.

  On the other hand, according to the irrigation tube 11 for agriculture by the said embodiment, the tube tube walls 11a and 11b of a crease | fold part are made the same as a center part by providing the protruding item | line 15 in the center part. It can be wound up closely. Thereby, the deviation of the distortion of both sides and the central part does not occur, and it is possible to prevent the twisting at the time of unwinding.

  In the irrigation method using the agricultural irrigation tube 11 as described above, the irrigation tube 11 is laid under the multi-film 3 of the cocoon 1 where the plant F is cultivated and covered with the multi-film 3 to irrigate. Water is supplied to the tube 11 to irrigate the plant F.

According to this irrigation method, the ridge 15 of the irrigation tube 11 becomes the surface of the upper tube wall 11 a on the ridge 1 by laying the irrigation tube 11 under the multi-film 3. The leading end comes into contact with the multi-film 3. For this reason, the multi-film 3 is lifted in the vicinity of the ridges 15 and is not in close contact with the irrigation tube 11 between the surfaces. Thereby, a contact area reduces and it becomes difficult to produce close_contact | adherence with the multifilm 3. FIG.
When water is supplied to the irrigation tube 11, the irrigation tube 11 is deformed into a substantially circular cross-section by the water pressure, lifts the multi-film 3, and is not blocked by the water spray hole 13, so that the water sprinkler 13 is moved from the water spray hole 13 to the ridge 1. Water is sent out satisfactorily to the plant F planted, and irrigation is performed.

  Further, in this irrigation method, the plant 1 is cultivated and the straw 1 covered with the multifilm 3 may be in an agricultural house (not shown). According to this irrigation method, the agricultural house The irrigation tube 11 is positioned between the multi-film 3 laid on the cocoon 1 and the cocoon 1, and the sprinkling hole 13 for the plant F planted in the cocoon 1 as described above. Irrigation from is performed. In particular, it is possible to satisfactorily perform irrigation under the multi-film 3 that is performed when irrigating a plant F that is not suitable for spray watering, such as crops such as florets and fruit vegetables in an agricultural house.

Next, another embodiment of the agricultural irrigation tube according to the present invention will be described.
FIG. 6 is a cross-sectional view in the direction perpendicular to the tube axis in the state in which the agricultural irrigation tube according to another embodiment is laid.
In the irrigation tube 11A for agriculture according to this embodiment, a plurality of ridges 15 protrude from the surfaces of both the upper and lower tube walls 11a and 11b. Other configurations are the same as those of the agricultural irrigation tube 11.

  According to this agricultural irrigation tube 11A, even when the multifilm 3 is arranged above and below, such as when the multifilm 3 is overlapped, the tips of the ridges 15 are in contact with the multifilm 3, and the irrigation tube upper and lower surfaces The multi-film 3 is separated in the vicinity of the ridges 15 of 11a and 11b. Further, when the multi-film 3 is covered only on the upper surface 11a, even if the irrigation tube 11A is twisted and turned upside down, the ridges 15 protruding from the upper and lower tube wall surfaces 11a and 11b are formed on the multi-film 3. It can contact and can prevent adhesion with multi film 3.

  In addition, by providing a plurality of ridges 15 on both sides of the tube walls 11a and 11b, when the ridges 15 and 15 of the adjacent winding layer are crushed flat and wound up in a disk shape, the tube width direction It will catch on and will not skid. Thereby, it becomes difficult to produce collapse by the agricultural irrigation tube 11 sliding in the winding axis direction (tube axis orthogonal direction b). As a result, handling properties can be improved.

It is sectional drawing laid between the fence of the agricultural irrigation tube which concerns on this invention, and a multi film. It is a perspective view of the agricultural irrigation tube shown in FIG. It is a perspective view of the irrigation tube for agriculture by which an upper side pipe wall is covered with a multi film. It is sectional drawing at the time of the non-water supply of the agricultural irrigation tube laid between the straw and the multi film. It is a perspective view at the time of water supply of the irrigation tube for agriculture laid between the straw and the multi film. It is sectional drawing of a pipe axis orthogonal direction in the laying state of the agricultural irrigation tube which concerns on other embodiment. It is sectional drawing of a pipe axis orthogonal direction in the laying state of the conventional irrigation tube for agriculture.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... 畝 3 ... Multi-film 11 ... Agricultural irrigation tube 11a, 11b ... Upper and lower pipe wall 13 ... Sprinkling hole 15 ... Convex strip a ... Tube longitudinal direction b ... Tube axis orthogonal direction F ... Plant

Claims (5)

An agricultural irrigation tube made of a flexible material and crushed flat and laid on a fence,
A plurality of sprinkling holes are drilled in the longitudinal direction of the tube at least above the flat upper and lower tube walls,
An agricultural irrigation tube, characterized in that at least the surface of the tube wall at the upper side is provided with protruding protrusions continuous in the tube longitudinal direction. An agricultural irrigation tube according to claim 1,
An agricultural irrigation tube, wherein the protrusions are provided on the surfaces of the upper and lower tube walls. An agricultural irrigation tube according to claim 1 or 2,
An irrigation tube for agriculture, wherein the ridges are provided in parallel with a plurality of ridges in parallel with the direction perpendicular to the tube axis. An irrigation method using an agricultural irrigation tube made of a flexible material and crushed flat and laid on a fence,
A plurality of sprinkling holes are drilled in the longitudinal direction of the tube at least above the flat upper and lower tube walls,
An agricultural irrigation tube in which at least the upper surface of the tube wall is provided with protruding protrusions extending in the longitudinal direction of the tube,
An irrigation method using an agricultural irrigation tube, wherein a plant is cultivated and laid under the multifilm of the cocoon covered with the multifilm, and water is supplied to the agricultural irrigation tube for irrigation.   The irrigation method using the agricultural irrigation tube according to claim 4, wherein the cocoon in which the plant is cultivated and covered with a multi-film is in an agricultural house.

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