JP2007044000A - Hydroponic apparatus for japanese ginger - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hydroponic apparatus intended for cultivating high-quality inflorescence while increasing a yield, and harvesting inflorescences in an easy, simple and ideal condition. <P>SOLUTION: This hydroponic apparatus of Japanese ginger has a medium 4 of prescribed thickness and width to grow Japanese ginger and a cultivation tray 1 to place the medium 4 thereon. Japanese ginger is cultivated by supplying a nutritional liquid 20 to the medium arranged on the cultivation tray 1. The cultivation tray 1 is formed by foaming plastic and has a grooved cross-section through integrally forming a pair of side walls 6 projecting upward along both side edges of the bottom. The side walls 6 on both sides are inclined in a direction of widening an opening width formed in a groove-like shape, and an angle (α) of inclination made by the inside surface (P) of the side wall 6 and a perpendicular plane (H) is larger than 30 degrees. The hydroponic apparatus of Japanese ginger comprises arranging the medium 4 on the cultivation tray 1, supplying the nutritional liquid 20 and growing inflorescences on the surface and both sides of the medium 4. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  [Technical Field] The present invention relates to a hydroponic solution cultivation apparatus for myoga that grows myoga by supplying a nutrient solution to a medium in which myoga is planted.

An apparatus for hydroponically cultivating myoga has been developed. (See Patent Document 1)
The cultivation apparatus described in this publication is shown in FIG. In this apparatus, a rock wool 32 having a predetermined thickness is laid on a tray 31 filled with a nutrient solution 30, a root cutting sheet 33 is laminated on the rock wool 32, and a medium 34 is placed on the root cutting sheet 33. Are laminated. The nutrient solution 30 in the tray 31 is controlled to a level where the lower part of the rock wool 32 is immersed and the root cutting sheet 33 is not immersed.

  The cultivation apparatus described in this publication can grow inflorescences from both upper and side surfaces of the medium 34. For this reason, it has the feature that the yield of inflorescence can be increased. However, the inflorescence that grows protruding from the side surface of the culture medium 34 has a drawback that it cannot be grown in a favorable environment, so that it has low quality and cannot be easily harvested. This is because the side wall 36 of the tray 31 weakens light irradiation. The inflorescences on the side that are not irradiated with sufficient light are not natural and beautiful red like the inflorescences on the upper surface, and the color becomes light and the commercial value decreases. In addition, since the light irradiation is weak, it is difficult to grow in a natural form, and high quality inflorescence cannot be grown from both color and form.

In addition, the inflorescence growing from the side of the medium has a drawback that it takes time and effort to cultivate. In particular, inflorescences that grow from the lower part of the side of the medium are particularly troublesome to cultivate. This is because the side wall gets in the way when harvesting the inflorescence by putting a hand in the gap between the culture medium and the side wall. In addition, when harvested in this state, the inflorescence cannot be harvested in an ideal state, and an inflorescence having no commercial value may be obtained during cultivation.
JP 11-318244 A

  The present invention was developed for the purpose of solving the disadvantages of the conventional cultivating apparatus for cultivating myoga, and an important object of the present invention is to cultivate high-quality inflorescences while increasing the yield. Another object of the present invention is to provide a hydroponic cultivation apparatus for myoga that can be easily and easily harvested in an ideal state.

In order to achieve the above-mentioned object, the hydroponic cultivation apparatus for myoga of the present invention has the following configuration.
The apparatus for cultivating myoga has a medium 4 having a predetermined thickness and width for growing myoga and a culture tray 1 on which this medium 4 is placed. The liquid is supplied and the ginger is cultivated on the medium 4. The cultivation tray 1 is formed by foaming plastic, and a pair of side walls 6 projecting upward along both side edges of the bottom surface are integrally formed to have a cross-sectional shape of a groove shape. Further, the side walls 6 on both sides are inclined in the direction of increasing the opening width formed in the groove shape, and the inclination angle (α) between the inner surface (P) of the side walls 6 and the vertical surface (H) is 30 degrees or more. It is also bigger. The nutrient solution cultivation apparatus for myoga arranges the medium 4 on the cultivation tray 1 and supplies the nutrient solution, and grows inflorescences on the upper surface and both side surfaces of the medium 4.

  In the hydroponic cultivation apparatus for myoga of the present invention, the height (h) of the side wall 6 can be 4 cm or more and 10 cm or less.

  In the hydroponic cultivation apparatus for myoga of the present invention, the outer width (W) of the cultivation tray 1 can be 65 cm or more and 85 cm or less.

  In the hydroponic cultivation apparatus for myoga of the present invention, the inner surface of the side wall 6 can be an inclined surface 6A up to the upper end. In addition, the hydroponic cultivation apparatus for myoga of the present invention can be provided with the standing surface 6 </ b> B at the upper end of the inner surface of the side wall 6.

  In the apparatus for cultivating a myoga of the present invention, a root cutting sheet 3 that prevents the root of myoga from passing through the medium 4 and allows water to pass therethrough is disposed. In addition, a water retaining sheet 5 for supplying water to the culture medium 4 can be laminated, and a base film 2 can be laminated under the water retaining sheet 5.

  In the apparatus for cultivating myoga of the present invention, the water retention sheet 5 is a water retention mat in which inorganic fibers are three-dimensionally assembled without directionality, or fibers are assembled without directionality and fibers are joined at intersections. It can be a non-woven fabric.

  In the hydroponic cultivation apparatus for myoga of the present invention, a drainage groove 9 can be provided on the upper surface 8 of the cultivation tray 1.

  The hydroponic cultivation apparatus for myoga of the present invention is capable of cultivating high-quality inflorescences while increasing the yield, and has the advantage that it can easily and easily harvest inflorescences in an ideal state. It is provided with a pair of side walls protruding upward along both side edges of the bottom surface of the cultivation tray on which the culture medium is placed, and the cross-sectional shape of the cultivation tray is formed into a groove shape. This is because the side wall is inclined in the direction of increasing the opening width, and the inclination angle between the inner surface of the side wall and the vertical surface is made larger than 30 degrees. In this way, the structure in which the side walls on both sides are inclined in the direction of widening the opening width of the cultivation tray can widen the space between the side surface of the culture medium and the inner surface of the side wall, so that sunlight can be effectively irradiated from this wide space. A beautiful red inflorescence can be grown on the side of the medium. Therefore, even in the lower part of the side of the medium, the yield can be improved while growing high quality inflorescences with high commercial value in a natural form.

  In addition, since the space between the side of the medium and the side wall is wide, even when harvesting inflorescences that grow on the side of the medium, it is effective to put a hand between the medium and the side wall to obstruct the side wall. It has the feature that inflorescence can be harvested in an ideal state while preventing it. In particular, it can be efficiently harvested without damaging the inflorescences that grow on the lower part of the side of the medium.

  The hydroponic cultivation apparatus for myoga according to claim 6 of the present invention includes a root cutting sheet disposed under the culture medium, and a water retention sheet for supplying water to the culture medium is laminated under the root cutting sheet. Since the water that permeates the root cutting sheet is retained, when the medium dries, the water can be supplied from the water retaining sheet to the medium, and the plant can be grown while preventing the medium from being overdried.

  According to the eighth aspect of the present invention, there is provided a drainage groove on the upper surface of the cultivation tray, so that the nutrient solution that has permeated the culture medium is quickly drained from the cultivation tray and stagnated. Can reduce plant diseases caused by.

  Embodiments of the present invention will be described below with reference to the drawings. However, the examples shown below exemplify a nourishing hydroponic cultivation apparatus for embodying the technical idea of the present invention, and the present invention does not specify the nourishing hydroponic apparatus for myoga as follows. .

  Further, in this specification, in order to facilitate understanding of the scope of claims, numbers corresponding to the members shown in the examples are indicated in the “claims” and “means for solving problems” sections. It is added to the members. However, the members shown in the claims are not limited to the members in the embodiments.

  2 to 4 includes a culture medium 4 having a predetermined thickness and width for growing a root of myoga and a cultivation tray 1 on which the culture medium 4 is placed. Further, the hydroponic cultivation apparatus shown in the figure includes a root cutting sheet 3 that is stacked under the culture medium 4 to prevent passage of the roots of the ginger planted in the culture medium 4 and allows water to pass therethrough, and the root cutting sheet. A water retaining sheet 5 that is laminated under 3 and supplies water to the culture medium 4 and a base film 2 that is laminated under the water retaining sheet 5 are laid on the cultivation tray 1 on which the culture medium 4 is placed. These nutrient solution cultivation apparatuses supply the nutrient solution 20 to the medium 4 arranged on the cultivation tray 1 and cultivate myoga with the medium 4.

  The culture medium 4 is required to have water retention for retaining the supplied water and drainage for draining excess water. The medium 4 shown in the figure has a mat shape with a predetermined thickness and is placed on the root cutting sheet 3. As the culture medium 4, an optimal medium for the growth of ginger is selected. For example, an organic material such as coconut shell or bark is pressed and solidified into a mat having a predetermined thickness. As the medium 4, for example, a medium having a length of 1 m, a width of 40 cm, and a thickness of about 12 cm in a state where a nutrient solution is supplied is used. However, any medium having water retention and drainage suitable for the growth of myoga can be used as the medium, for example, an organic substance or an inorganic substance alone or a mixture thereof. As the medium that is an inorganic substance, for example, particles or rock wool obtained by sintering silica or alumina in an infinite number of voids can be used.

  As shown in FIGS. 2 to 7, the cultivation tray 1 is formed by integrally forming a pair of side walls 6 protruding upward along both side edges of the bottom surface, and has a cross-sectional shape of a groove shape. The side wall 6 prevents the culture medium 4 placed on the cultivation tray 1 and the nutrient solution 20 supplied from the water supply pipe 23 from spilling out to the outside of the cultivation tray 1. Therefore, the height (h) of the side wall 6 is formed to a height that can prevent the culture medium 4 and the nutrient solution 20 from spilling out. The height (h) of the side wall 6 is 4 cm or more, preferably 5 cm or more. The higher the side wall, the more reliably the medium and nutrient solution can be prevented from spilling out. However, the high side walls are less fragile due to their reduced strength, and the inflorescences growing on the sides of the medium cannot be sufficiently irradiated with sunlight. Therefore, the side wall 6 is lower than 10 cm, preferably 8 cm or less. The side wall 6 can be increased in strength by increasing its thickness. However, when the side wall 6 is thickened, the width of the entire cultivation tray 1 is increased. Therefore, the side wall 6 has a thickness of 1 to 5 cm, preferably 2 to 3 cm, and a height of 4 to 10 cm, preferably 5 to 8 cm, and more preferably 4 to 7 cm.

  Furthermore, the cultivation tray 1 has the side walls 6 on both sides inclined toward the outside. The side walls 6 on both sides are inclined in a direction in which the opening width of the cultivation tray 1 formed into a groove shape is increased. As shown in FIGS. 5 to 7, the cultivation tray 1 is provided with the side wall 6 in a posture that is inclined outward with respect to the vertical plane (H) at the boundary line (m) between the main body 7 and the side wall 6. . As shown in FIGS. 5 and 6, the side wall 6 of the cultivation tray 1 in FIGS. 2 and 3 has an inner surface as an inclined surface 6 </ b> A and a rising surface 6 </ b> B at the upper end. The upright surface 6B can be a vertical surface as shown in FIG. 6, or an inclined surface with a steeper slope than the inclined surface 6A as shown in FIG. As described above, the side wall 6 having the rising surface 6B at the upper end of the inner surface can effectively prevent the culture medium and nutrient solution from spilling out of the cultivation tray 1 because the standing surface 6B can stop the culture medium and nutrient solution. it can. Moreover, as shown in FIG. 7, the side wall 6 of the cultivation tray 1 of FIG. 4 is shape | molded so that the inner surface may become the inclined surface 6A to an upper end. This structure can be made strong by increasing the thickness of the side wall 6.

Furthermore, the cultivation tray 1 makes the inclination | tilt angle ((alpha)) which the inner surface (P) of the side wall 6 makes with a perpendicular surface (H) larger than 30 degree | times. Since the inner surface of the side wall 6 shown in FIG. 7 is an inclined surface 6A up to the upper end, the angle formed by the inner surface (P), which is the inclined surface 6A, and the vertical surface (H) is the inclined angle (α). Moreover, since the side wall 6 shown in FIG. 5 and FIG. 6 is provided with an upstanding surface 6B at the upper end of the inner surface, the inner surface (P) that minimizes the angle formed with the vertical surface (H) is not the inclined surface 6A. This is a surface connecting the upper end on the inner side of the upright surface 6 </ b> B and the boundary line (m) between the side wall 6 and the main body portion 7. As for the side wall 6 of this structure, the inner surface (P) which connects the upper end of the standing surface 6B which is the upper end part of the side wall 6, and the boundary line (m) of the side wall 6 and the main-body part 7 is vertical surface (H). The inclination angle is defined as the inclination angle (α).
Therefore, in this specification, the inclination angle (α) formed by the inner surface (P) of the side wall 6 and the vertical surface (H) is the inner surface (P) of the side wall 6 that minimizes the angle formed by the vertical surface (H), That is, it means an angle formed by the inner surface (P) connecting the innermost portion of the side wall 6 and the boundary line (m) between the side wall 6 and the main body 7 with the vertical plane (H).

  The cultivation tray 1 can grow inflorescences efficiently on the side surface of the culture medium 4 by setting the inclination angle (α) formed by the inner surface (P) of the side wall 6 to the vertical surface (H) to 30 degrees or more. This is because if the inclination angle (α) is too small, the space between the side surface of the medium and the inner surface of the side wall cannot be widened, and the side surface of the medium cannot be sufficiently irradiated with sunlight. As shown in the figure, the structure in which the inclination angle (α) is 30 degrees or more and the side walls 6 on both sides are inclined to widen the opening width widens the space between the side surface 6 of the culture medium 4 and the side walls 6 to emit sunlight. The side of the culture medium 4 can be sufficiently irradiated. Therefore, the inflorescence can be ideally grown also in the lower part of the side surface of the culture medium 4, and the yield can be improved. Moreover, since the space between the side surface of the culture medium 4 and the side wall 6 can be widened, there is also a feature that it can be efficiently harvested without damaging the inflorescence growing on the side surface of the culture medium 4. Furthermore, the structure which inclines the side wall 6 can also use the white type | system | group for the root cutting sheet 3 laid here, and can also irradiate the side surface of the culture medium 4 by reflecting sunlight.

  When the inclination angle (α) of the cultivation tray 1 is increased, the height (h) of the side wall 6 is decreased, and the outer width (W) of the cultivation tray 1 is increased. As described above, if the height (h) of the side wall is too low, the medium and nutrient solution cannot be effectively prevented from spilling outside. In addition, if the outer width (W) of the cultivation tray 1 is too wide, an area necessary for installation becomes wide, and the cultivation tray 1 cannot be efficiently produced. For example, when the culture tray 1 has a width of 40 cm and the outer width (W) is 65 cm or more and 85 cm or less, the cultivation tray 1 can efficiently grow inflorescences on the side surface of the culture medium 4. Therefore, the cultivation tray 1 adjusts the inclination angle (α) to an optimum angle so that the outer width (W) can be 65 cm to 85 cm while the height (h) of the side wall 6 is 4 cm to 10 cm.

  The cultivation tray 1 shown in FIGS. 2 and 5 is integrally provided with a pair of side walls 6 along both side edges of the main body 7. The cultivation tray 1 of this structure can make the inclination angle ((alpha)) large, and can make the wide range of both sides into the side wall 6. FIG. Thus, the cultivation tray 1 which makes the inner surface of the side wall 6 wide and makes the gently inclined surface 6 </ b> A can efficiently drain the nutrient solution supplied to the inner surface of the side wall 6 along the inclined surface 6 </ b> A of the side wall 6. There is.

  Furthermore, as for the cultivation tray 1 shown in FIG.3, FIG.4, FIG.6 and FIG. 7, the main-body part 7 is provided with the side edge plate part 7A on both sides, and protrudes upwards from the side edge of this side edge plate part 7A. The side wall 6 is integrally formed. The cultivation tray 1 has a feature that the width of the main body portion 7 can be widened. Although the cultivation tray 1 which can widen the main-body part 7 is not shown in figure, a side part culture medium is provided in the both sides of the culture medium which plants a ginger, and plants other than a ginger can be planted and cultivated with this side culture medium. This hydroponic cultivation apparatus can plant a plant that can be harvested earlier than the inflorescence in the side culture medium, and can harvest the crop planted in the side culture medium until the inflorescence is harvested to increase profits.

  Furthermore, the cultivation tray 1 is provided with drainage grooves 9 on the upper surface 8 as shown in FIGS. However, these figures show the cultivation tray 1 shown in FIG. Although not shown, the cultivation tray 1 shown in FIGS. 3 and 4 can have the same structure as that shown in FIGS. The cultivation tray 1 shown in FIG. 8 to FIG. 14 has a pair of side grooves 11 provided along the side walls 6 on both sides as drain grooves 9, a central groove 11 provided between the pair of side grooves 11, and a pair of side grooves 11. And a connecting groove 13 that connects the central groove 11 to each other.

  The pair of side grooves 11 are provided along the side walls 6 at positions spaced inward from the pair of side walls 6. As shown in FIG. 8, the side grooves 11 are provided to extend to both end surfaces of the cultivation tray 1. The cultivation tray 1 guides the waste liquid that permeates the culture medium 4 to the side groove 11 and drains it from the side groove 11 to the outside of the cultivation tray 1.

  The central groove 11 is located in the middle of the pair of side grooves 11 and is provided in parallel with the side grooves 11. The central groove 11 is also extended to both end surfaces of the cultivation tray 1. This central groove 11 guides a part of the waste liquid that permeates the culture medium 4 disposed above the central upper surface 8A of the cultivation tray 1 and efficiently drains it.

  Furthermore, the cultivation tray 1 connects the pair of side grooves 11 and the central groove 11 with a connection groove 13. The connecting groove 13 is a groove provided by connecting a pair of side grooves 11, crosses the central groove 11, and intersects the central groove 11 perpendicularly. The connecting groove 13 drains the waste liquid flowing through the central groove 11 through the side grooves 11. Moreover, the connection groove | channel 11 also has a function which guides and drains a part of waste liquid which permeate | transmits the culture medium 4 arrange | positioned above the center upper surface 8A of the cultivation tray 1. FIG.

  Further, the connecting groove 13 shown in FIG. 12 has a bottom surface inclined downwardly from the central groove 11 toward the side grooves 11 on both sides. The connecting groove 13 having this structure can quickly cause the waste liquid flowing in the central groove 11 to flow down toward the side groove 11. However, the connecting groove can also be inclined downwardly from the one side groove toward the other side groove. In this structure, the waste liquid flowing in one side groove and the central groove flows down to the other side groove and is drained.

  The drainage grooves 9 described above have a width and depth that allow the waste liquid to flow smoothly. Even if the drainage groove 9 is too narrow or too deep, foreign matter contained in the waste liquid tends to be clogged, and the waste liquid cannot be drained smoothly. For this reason, the width and depth of the drain groove 9 are, for example, 1 cm or more, preferably 2 cm or more. However, if the width of the drainage groove 9 is increased and the depth of the cultivation tray is increased, the overall strength is lowered. For this reason, the width and depth of the drainage groove 9 are, for example, smaller than 7 cm, preferably 6 cm or less. The width and depth of the drainage groove 9 are preferably set to 3 to 5 cm in order to reduce clogging of the waste liquid and hold the culture medium 4 horizontally.

  Furthermore, the cultivation tray 1 shown in FIG. 3 and FIG. 4 is the upper surface 8, and the side surface 8 </ b> B located between the side wall 6 and the side groove 11 is inclined downward toward the side groove 11. It is an inclined surface. This cultivation tray 1 drains waste liquid that has permeated the culture medium 4 disposed above the side upper surface 8B, which is an inclined surface, from the side upper surface 8B toward the side groove 11. That is, the cultivation tray 1 can quickly flow down the waste liquid passing through the culture medium 4 in the vicinity of the side wall 6 toward the side groove 11 without stagnation in the corner portion at the foot of the side wall 6. Moreover, since the cultivation tray 1 which makes this side part upper surface 8B an inclined surface can shape | mold the side edge plate part 7A which is a connection part with the side wall 6 gradually thickly toward the side wall 6, the side edge plate part 7A and the side wall 6 There is also a feature that can increase the connection strength.

  Furthermore, the cultivation tray 1 shown in the drawing is provided with a plurality of rows of reinforcing ribs 10 that are located on the bottom surface side of the side wall 6 and the side edge plate portion 7A and project downward. The reinforcing ribs 10 are formed in a direction perpendicular to the side walls 6 and are integrally formed at a predetermined interval on the bottom surface side of the cultivation tray 1. The reinforcing rib 10 reinforces the side edge plate portion 7A and the side wall 6 by supporting them from the lower side, and prevents this portion from being deformed or broken.

  Furthermore, the cultivation tray 1 shown to the figure inclines the central upper surface 8A between a pair of side grooves 11 in the downward slope toward the side grooves 11. FIG. This structure has a feature that waste liquid that permeates the culture medium 4 disposed above the central upper surface 8A can be drained by quickly flowing down toward the side grooves 11 on both sides. However, the central upper surface can be inclined downward toward the central groove, or can be inclined downward toward both the side groove and the central groove.

  Although the cultivation tray having the above structure has the side upper surface 8B and the central upper surface 8A as inclined surfaces, the present invention does not necessarily require the upper surface of the cultivation tray as an inclined surface. The cultivation tray can be flat on the entire upper surface, or can be partially inclined.

  Furthermore, although not shown in figure, the cultivation tray can provide the drainage hole which drains the waste liquid which flowed into the gutter outside the cultivation tray. This cultivation tray can provide a drain hole in the center part of a gutter, for example. The drainage hole is a through-hole penetrating the bottom surface of the cultivation tray, and can pass the waste liquid flowing into the side groove and drain it to the outside. The cultivation tray which has a drain hole can make the bottom face of a side groove incline in the downward slope toward a drain hole, and can let the waste liquid which flows through a side groove flow to a drain hole rapidly.

  The cultivation tray 1 having the above structure is manufactured by foaming plastic. This cultivation tray 1 can be mass-produced inexpensively. The cultivation tray 1 made of plastic foam can be provided with a non-foamed layer on the surface to prevent the penetration of the waste liquid, or foam into closed cells to prevent the penetration of the waste liquid. it can. However, since the cultivation tray 1 is a base film 2 of a non-permeable sheet laid on the top and can prevent the waste liquid from penetrating into the cultivation tray 1, the cultivation tray 1 does not need to have a completely waterproof structure. The plastic foam cultivation tray 1 can be made of foamed polystyrene and can be produced in large quantities at a particularly low cost. However, the cultivation tray can also be manufactured from other plastic foams such as vinyl chloride foam, EVA foam, urethane foam and the like.

  Furthermore, the cultivation tray 1 shown in the figure is divided into a plurality of partition plates 1A and has a structure in which partition plates 1A arranged adjacent to each other are connected by a fitting structure. This cultivation tray 1 can be connected long and narrow like a basket by arranging partition plates 1A of a predetermined size. The partition plate 1A is provided with a protrusion 15 and a recess 16 that can be fitted to each other at adjacent edges. As shown in FIG. 15, this cultivation tray 1 can connect the adjacent division | segmentation plate 1A to a fixed position by putting the protrusion part 15 in the recessed part 16. As shown in FIG. Since the hydroponic cultivation apparatus lays the base film 2 of a water-impermeable sheet on the cultivation tray 1, it is not necessary to connect the partition plates 1A with a waterproof structure so that water does not leak from the connecting portion. This is because the waste liquid can be collected while preventing it from penetrating the upper surface 8 of the cultivation tray 1 by the base film 2 laid on the top.

  The base film 2 is laid on the cultivation tray 1. The base film 2 partitions the culture medium 4, the root cutting sheet 3 and the water retention sheet 5 disposed on the upper side, and the cultivation tray 1 when disposed on the lower side. The base film 2 is a water-impermeable sheet, and prevents waste liquid that has passed through the culture medium 4 from passing therethrough and penetrating into the cultivation tray 1. The base film 2 is larger than the outer shape of the cultivation tray 1 and is extended to the outer surfaces of the side walls 6 on both sides. This is to prevent the waste liquid from entering between the side wall 6 and the base film 2.

  The base film 2 is laid in a state along the upper surface 8 of the cultivation tray 1. The base film 2 laid in the side groove 11 and the central groove 11 is laid along the inner surface thereof as shown in FIGS. In the base film 2 laid along the inner surfaces of the side grooves 11 and the central groove 11, the waste liquid flows in the grooves formed inside thereof. Therefore, in this specification, “the waste liquid flows through the side grooves and the central groove” means that the waste liquid does not flow directly inside the side grooves and the central groove, but inside the base film laid inside the side grooves and the central groove. Means that the waste liquid flows.

  The base film 2 is a water-impermeable sheet made of a plastic film. A polyethylene film is suitable for the base film 2 of the non-water-permeable sheet which is a plastic film. However, a vinyl chloride film can also be used as the plastic film of the base film. Furthermore, the hydroponic cultivation apparatus of the present invention does not specify a base film that is a water-impermeable sheet as a plastic film. This is because, for example, a non-woven sheet or cloth having a waterproof surface can be used for the base film which is a non-water-permeable sheet. Base films composed of non-woven fabrics and cloths are harder to tear than plastic films and have the advantage of being resistant to heat.

  The water retaining sheet 5 is located on the upper surface 8 of the cultivation tray 1 and is laid on the base film 2. That is, the water retaining sheet 5 is disposed between the base film 2 and the root cutting sheet 3. The water retaining sheet 5 absorbs and retains the waste liquid that has passed through the culture medium 4 and the root cutting sheet 3. The water retention sheet 5 is a water retention mat in which inorganic fibers are gathered three-dimensionally without directionality, a nonwoven fabric in which fibers are gathered without directionality and fibers are bonded at intersections, rock wool having a predetermined thickness, woven fabric, Water-resistant paper or the like can be used. The hydroponic cultivation apparatus shown in the figure uses the water retention sheet 5 as a water retention mat. However, rock wool can be used for the water retaining sheet. Since the hydroponic cultivation apparatus retains moisture in the water retaining sheet 5, when the medium 4 is dried, the moisture retained is permeated through the root cutting sheet 3 and supplied to the medium 4. The water in the water retaining sheet 5 is vaporized and supplied to the culture medium 4 or permeated through the root cutting sheet 3 and permeated into the culture medium 4 to be replenished. Therefore, these hydroponic cultivation devices have the feature that they can grow myoga while preventing the medium 4 from being overdried.

  The root cutting sheet 3 is a sheet also called a root prevention sheet, and a commercially available sheet is used. The root cutting sheet 3 can be a nonwoven fabric in which fine fibers are three-dimensionally assembled. Further, a plastic film provided with an infinite number of fine through holes can be used as the root cutting sheet 3. Furthermore, the root cutting sheet 3 can be any sheet that can permeate water and prevent the roots of the plant from growing and passing.

  The root cutting sheet 3 is laminated under the medium 4 and prevents the roots of plants planted in the medium 4 from passing therethrough. The root cutting sheet 3 shown in the figure is disposed between the culture medium 4 and the water retention sheet 5 and prevents the roots of the plant from extending and entering the grooves of the water retention sheet 5 and the cultivation tray 1. This is because if roots of plants enter the grooves of the water retention sheet 5 or the cultivation tray 1, the roots come into contact with the waste liquid and become sick. Therefore, the root cutting sheet 3 is preferably disposed on the entire upper surface of the cultivation tray 1 as shown in FIGS. However, when a plant is grown on a part of the culture tray instead of the entire top surface of the cultivation tray, it is not always necessary to dispose a root cutting sheet on the entire surface of the cultivation tray. The root cutting sheet 3 in the figure is laid horizontally on the water retaining sheet 5 and hung downward from both sides of the side wall 6 of the cultivation tray 1. This hydroponic cultivation apparatus can reliably prevent plant roots and the culture medium 4 from entering between the root cutting sheet 3 and the base film 2.

  The above hydroponic cultivation apparatus is arranged horizontally on the horizontal cultivation table 26. The horizontal cultivation table 26 shown in FIGS. 2 to 4 is a mounting table that is arranged away from the ground. As described above, the nutrient solution cultivation apparatus placed on the platform has a feature that the waste liquid drained to the outside can flow down naturally and can be efficiently recovered. However, the horizontal cultivation table does not necessarily need to be a platform that is separated from the ground, and the hydroponic cultivation apparatus can be directly placed on the open ground with the horizontal cultivation stand as the open ground.

  The nutrient solution cultivating apparatus shown in the figure supplies the nutrient solution 20 to the culture medium 4 in which myoga is planted by a water feeder 25. As shown in the figure, the water feeder 25 includes a tank 21 that stores the nutrient solution 20, a pump 22 that sucks and transfers the nutrient solution 20 in the tank 21, and a nutrient solution 20 that is supplied from the pump 22. 4 and a water supply pipe 23 for spraying water. The water feeder 25 having this structure continuously operates the pump 22 to continuously supply a fixed amount of nutrient solution 20 to the plant, or controls the operation of the pump 22 by the control unit 24 to supply a predetermined amount of nutrient solution 20 to a predetermined amount. Feed plants at time intervals. The nutrient solution 20 supplied to the ginger passes through the culture medium 4 and the root cutting sheet 5, a part is absorbed by the water retention sheet 5, and the rest flows into the side groove 11 as waste liquid and is drained to the outside. As shown in the figure, the waste liquid drained to the outside from the side groove 11 is collected and circulated to the tank 21 of the water feeder 25. The water supply device 25 shown in the figure has a structure in which the waste liquid recirculated to the tank 21 is supplied again to the culture medium 4 through the water supply device 25, but the recovered waste liquid is not recirculated to the tank 21 of the water supply device 25. It can also be collected in a collection tank separate from the water supply.

  The nutrient solution 20 supplied to the myoga is a solution obtained by adding fertilizers and chemicals to water. Therefore, it is not preferable that the waste liquid that has passed through the culture medium 4 and the root cutting sheet 3 is drained to the open ground. This is because the soil contained in the waste liquid may contaminate the soil in the open ground or promote the growth of weeds and bacteria. Thus, the nutrient solution cultivation apparatus that collects the waste liquid drained to the outside from the cultivation tray has the feature that the waste liquid can be prevented from penetrating into the open ground and plants can be grown in an ideal environment.

  The collected waste liquid is discarded or supplied to the medium again. The waste liquid collected and supplied again to the culture medium 4 is adjusted to a predetermined fertilizer concentration by adding necessary fertilizer. However, the recovered waste liquid can also be supplied to the culture medium 4 for the purpose of replenishing water without adjusting the fertilizer concentration. An apparatus that supplies the collected waste liquid to the medium 4 again can effectively use water to reduce the amount of water consumed. In addition, since the waste liquid contains fertilizer, the apparatus for supplying the waste liquid to the medium again has a feature that the running cost can be reduced. Furthermore, there is a feature that waste liquid containing fertilizer is not drained to the surroundings.

It is a longitudinal cross-sectional view which shows the structure of the conventional hydroponic cultivation apparatus. BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic sectional drawing of the nourishing hydroponic cultivation apparatus concerning one Example of this invention. It is a schematic sectional drawing of the hydroponic cultivation apparatus of a myoga concerning other Examples of this invention. It is a schematic sectional drawing of the hydroponic cultivation apparatus of a myoga concerning other Examples of this invention. It is an expanded sectional view which shows the side wall of the cultivation tray of the hydroponic cultivation apparatus shown in FIG. It is an expanded sectional view which shows the side wall of the cultivation tray of the nutrient solution cultivation apparatus shown in FIG. It is an expanded sectional view which shows the side wall of the cultivation tray of the nutrient solution cultivation apparatus shown in FIG. It is a top view of the cultivation tray shown in FIG. It is a bottom view of the cultivation tray shown in FIG. It is a front view of the cultivation tray shown in FIG. It is AA sectional view taken on the line of the cultivation tray shown in FIG. It is BB sectional drawing of the cultivation tray shown in FIG. It is CC sectional view taken on the line of the cultivation tray shown in FIG. It is the DD sectional view taken on the line of the cultivation tray shown in FIG. It is a side view which shows the connection structure of a partition plate.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Cultivation tray 1A ... Partition plate 2 ... Base film 3 ... Root cutting sheet 4 ... Medium 5 ... Water retention sheet 6 ... Side wall 6A ... Inclined surface
6B ... Standing surface 7 ... Body 7A ... Side edge plate 8 ... Top 8A ... Center top
8B ... Side surface 9 ... Drainage groove 10 ... Reinforcement rib 11 ... Side groove 12 ... Central groove 13 ... Connection groove 15 ... Protrusion 16 ... Recess 20 ... Nutrient solution 21 ... Tank 22 ... Pump 23 ... Water supply pipe 24 ... Control part 25 ... Water supply 26 ... Horizontal cultivation stand 30 ... Nutrient solution 31 ... Tray 32 ... Rock wool 33 ... Root cutting sheet 34 ... Medium 36 ... Side wall

Claims (8)

A medium (4) having a predetermined thickness and width for growing myoga and a cultivation tray (1) on which the medium (4) is placed, and being arranged on the cultivation tray (1) A cultivation device for cultivating myoga with medium (4) by supplying nutrient solution (20) to
The cultivation tray (1) is made of foamed plastic, and is formed by integrally forming a pair of side walls (6) protruding upward along both side edges of the bottom surface, and the cross-sectional shape is a groove shape, Further, the side walls (6) on both sides are inclined in the direction of widening the opening width formed in the groove shape, and the inclination angle (α) between the inner surface (P) of the side wall (6) and the vertical surface (H) is set. Larger than 30 degrees,
An apparatus for cultivating a myoga solution by placing a culture medium (4) on a cultivation tray (1), supplying a nutrient solution (20), and growing inflorescences on the upper surface and both sides of the medium (4).   The hydroponic cultivation apparatus for myoga according to claim 1, wherein the height (h) of the side wall (6) is 4 cm or more and 10 cm or less.   The hydroponic cultivation apparatus of myoga according to claim 1, wherein the outer width (W) of the cultivation tray (1) is 65 cm or more and 85 cm or less.   The hydroponic cultivation apparatus for myoga according to claim 1, wherein the inner surface of the side wall (6) is an inclined surface (6A) to the upper end.   The hydroponic cultivation apparatus for myoga according to claim 1, wherein the inner surface of the side wall (6) has a standing surface (6B) at the upper end.   Under the medium (4), a root cutting sheet (3) that prevents the passage of the ginger root and allows water to pass therethrough is disposed, and further, under the root cutting sheet (3), the medium (4 2) a water retention sheet (5) for supplying water, and a base film (2) is laminated under the water retention sheet (5).   The water-retaining sheet (5) is a water-retaining mat in which inorganic fibers are gathered three-dimensionally without directionality, or a non-woven fabric in which fibers are gathered without directionality and fibers are joined at intersections. Myoga hydroponic cultivation equipment. The hydroponic cultivation apparatus of myoga according to claim 1, wherein a drainage groove (9) is provided on the upper surface (8) of the cultivation tray (1).

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