CN104320967B - Nutriculture member and nutriculture method - Google Patents
Nutriculture member and nutriculture method Download PDFInfo
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- CN104320967B CN104320967B CN201380003118.3A CN201380003118A CN104320967B CN 104320967 B CN104320967 B CN 104320967B CN 201380003118 A CN201380003118 A CN 201380003118A CN 104320967 B CN104320967 B CN 104320967B
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- nutriculture
- convex portion
- convex
- hydrophilic sheet
- nutrient solution
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G31/00—Soilless cultivation, e.g. hydroponics
Abstract
The invention provides a member for nutriculture, which can inhibit the bubble part generated between a hydrophilic sheet and a waterproof sheet, thereby being difficult to interrupt the capillary water of the hydrophilic sheet. The member for nutriculture is characterized by comprising: a planting plate having a plurality of planting holes for setting a root ball of the seedling; a cultivation bed groove having a plurality of projections; and a hydrophilic sheet laid on the bottom surface of the cultivation bed groove. The side surface of the convex portion is inclined such that the upper surface of the convex portion is smaller than the lower surface of the convex portion.
Description
Technical Field
The present invention relates to a nutriculture member and a nutriculture method.
Background
The hydroponic culture film method is a hydroponic culture method in which a seedling root ball (root ball) is planted through a planting hole and placed on the bottom surface of a culture bed groove, and a culture solution is made to flow in a thin film form on the bottom surface of the culture bed groove, thereby growing the seedling root ball.
Patent document 1 (jp 8-205700 a) discloses a nutriculture device that is configured by a culture bed groove placed on a planting plate where a plurality of planting holes are formed, has a continuous convex portion formed in the longitudinal direction of the bottom surface of the culture bed groove, and has a groove between the convex portion and the convex portion, through which a nutrient solution flows, as a nutriculture method by a nutriculture thin film method.
According to the above-described conventional nutriculture device, the bottom surface of the culture bed groove is formed with a convex portion shape having a rectangular cross-sectional shape, and the nutrient solution flows between the convex portion and the convex portion while avoiding the convex portion shape (rectangular cross-sectional shape) of the culture bed groove.
However, since the hydrophilic sheet (hydrophilic material of the related art) provided on the bottom surface of the culture bed groove is not substantially affected by the weight of the nutrient solution flowing between the convex portions, the hydrophilic sheet tends to be a mountain shape smoothly covering the convex shape of the culture bed groove without following the convex shape of the culture bed groove, and air bubbles may be generated between the culture bed groove and the hydrophilic sheet (see fig. 1).
The thin film method of nutriculture is a nutriculture method in which a seedling root mass is planted from a planting hole and placed on the bottom surface of a culture bed groove, and a culture solution flows in a thin film on the bottom surface of the culture bed groove, thereby growing the seedling root mass, but if the above-described air bubbles or the like occur between a hydrophilic sheet and a convex portion of the bottom surface of the culture bed groove, capillary water is interrupted in the hydrophilic sheet, and there is a possibility that the supply of the culture solution to a culture medium portion of a seedling planted on the upper surface of the convex portion of the culture bed groove is hindered. As shown in fig. 1, the prior art uses the edge of the protrusion to create the gap.
Further, in order to eliminate air bubbles generated between the culture bed tank and the hydrophilic sheet, the hydrophilic sheet is brought into close contact with the culture bed tank using a brush or the like, and therefore, a large amount of operation time is required, and the hydrophilic sheet may be damaged when the air bubbles are removed by the brush.
Patent document 1: japanese laid-open patent publication No. 8-205700
Disclosure of Invention
The invention aims to provide a member for nutriculture, which can prevent the generation of bubble part between a hydrophilic sheet and a convex part of the bottom surface of a culture bed groove, thereby preventing the capillary water of the hydrophilic sheet from being interrupted.
The inventors of the present invention have earnestly studied and found that generation of a bubble portion between a hydrophilic sheet and a convex portion of a cultivation bed groove can be suppressed by inclining the side surface of the convex portion of the cultivation bed groove to bring the hydrophilic sheet into a state of inclining along the convex portion of the cultivation bed groove, and completed the present invention.
That is, an object of the present invention is to provide:
(1) a nutriculture member comprising:
a planting plate having a plurality of planting holes for setting a root ball of the seedling;
a cultivation bed groove having a plurality of projections; and
a hydrophilic sheet laid on the bottom surface of the cultivation bed groove,
the side surface of the convex portion is inclined such that the upper surface of the convex portion is smaller than the lower surface of the convex portion.
(2) The nutriculture part according to claim 1, wherein the first and second members are fixed to each other,
the total area of the upper surfaces of the plurality of convex parts is smaller than the area of the bottom surfaces of the cultivation bed grooves except for the convex parts.
(3) The component for nutriculture according to claim 1 or 2, wherein a side surface of the convex portion is inclined at 20 to 80 degrees with respect to a lower surface of the convex portion.
(4) The member for nutriculture according to any one of claims (1) to (3), wherein a side surface of the convex portion is inclined at 100 to 160 degrees with respect to an upper surface of the convex portion.
(5) A hydroponic method characterized in that a root ball is cultivated by flowing a culture solution through the bottom surface of the culture bed tank using the hydroponic member according to any one of claims 1 to 4.
In the member for nutriculture according to the present invention, the generation of bubble portions between the hydrophilic sheet and the convex portions of the culture bed groove is suppressed, and the capillary water of the hydrophilic sheet is less likely to be interrupted.
In addition, by using the member for nutriculture of the present invention, the harvest efficiency of the nutriculture method can be improved.
Drawings
FIG. 1 is a sectional view of a conventional nutriculture member.
FIG. 2 is a schematic view of a cultivation bed tank of the present invention.
FIG. 3 is a view showing an example of a nutriculture member according to the present invention.
Detailed Description
A nutriculture medium according to one aspect of the present invention includes: a planting plate having a plurality of planting holes for setting a root ball of the seedling; a cultivation bed groove having a plurality of projections; and a hydrophilic sheet laid on the bottom surface of the cultivation bed groove, wherein a convex portion is formed at a position abutting against the lower side of the planting hole when the planting plate is placed on the cultivation bed groove, and the side surface of the convex portion is inclined such that the upper surface of the convex portion is smaller than the lower surface of the convex portion.
As a planting plate constituting the nutriculture member of the present invention, for example, a planting plate molded from lightweight styrofoam is used. A plurality of planting holes are arranged on the planting flat plate in a penetrating way. The size of the colonization plate can be arbitrarily determined.
Although the shape of the planting hole may be an inverted cone, it is preferable to use a cylindrical shape having the same upper and lower diameters, and the size of the planting hole is larger than the diameter of the root ball of the seedling to be used. The intervals of the planting holes can be determined reasonably according to the crops to be cultivated.
The culture bed tank constituting the nutriculture member of the present invention has a structure in which the open upper portion is covered with the above-described planting plate. The cultivation bed grooves are formed of, for example, light-weight styrofoam, as in the case of the planting plates. The size of the culture bed groove can be determined arbitrarily.
In the present invention, the cultivation bed groove has a plurality of projections. Fig. 2 is a schematic view showing the convex part of the cultivation bed groove, and in the present invention, "bottom surface of the cultivation bed groove" means a surface of the bottom of the cultivation bed groove, including the upper surface and the side surface of the convex part, and a surface of the groove part between the convex part and the convex part.
In the nutriculture member according to the present invention, the side surface of the convex portion is inclined such that the upper surface of the convex portion is smaller than the lower surface of the convex portion. By inclining the side surfaces of the convex portions of the culture bed groove so that the upper surfaces of the convex portions are smaller than the lower surfaces of the convex portions, the adhesion between the side surfaces of the convex portions and the hydrophilic sheet can be improved, and the generation of air bubbles between the convex portions and the hydrophilic member can be suppressed.
The inclined surface of the side surface of the projection may be a flat surface, a concave surface, or a convex surface.
In the present invention, the side surface of the convex portion is preferably inclined at 20 to 80 degrees, more preferably 25 to 70 degrees, and further preferably 30 to 60 degrees with respect to the lower surface of the convex portion. If the inclination is less than 20 degrees, the amount of the nutrient solution flowing in the culture bed tank may be reduced, or the culture bed tank itself may need to be enlarged, thereby increasing the installation space. If the inclination is more than 80 degrees, air bubbles are likely to enter between the side surface of the projection and the hydrophilic sheet, and the nutrient solution may not be smoothly supplied to the seedling.
The side surface of the convex portion is inclined preferably at 100 to 160 degrees, more preferably at 110 to 155 degrees, and still more preferably at 120 to 150 degrees with respect to the upper surface of the convex portion. If the inclination is less than 100 degrees, air bubbles are likely to enter between the side surfaces of the projections and the hydrophilic sheet, and the nutrient solution may not be smoothly supplied to the seedling. If the inclination is more than 160 degrees, the size of the cultivation bed groove itself needs to be increased, which may increase the installation space.
The left and right side surfaces of the projection may have the same or different inclination angles.
The height of the projection (height from the bottommost surface (groove part) of the cultivation bed groove) is preferably 3 to 10 mm. When the height of the projections is 3mm or less, the seedling root mass is washed by the flow of the nutrient solution, and the culture soil is washed to break the seedling root mass, so that the seedling may gradually sink or the seedling may gradually incline. Further, if the height of the projection is 10mm or more, the amount of the nutrient solution to be used increases, and therefore, in order to maintain the amount of the nutrient solution to be used, the amount of the nutrient solution to be supplied by pressure per unit time needs to be increased, and there is a possibility that the pump capacity needs to be increased, the diameter of pipes for supplying the nutrient solution needs to be increased, and the cost of parts and electricity required increases.
The width of the projections is determined by the diameter of the root ball of the seedling used. If the width of the projection is smaller than the diameter of the seedling root cluster, the seedling root cluster may deviate from the ridge-shaped projection and slide down to be inclined. The width of the projection is preferably about 4mm wider than the diameter of the root ball of the seedling to be used.
When the planting plate is placed on the planting bed groove, the projection is usually formed at a position abutting against the lower portion of the planting hole for setting the root ball of the seedling. The projections may be formed independently of the lower portions of the plurality of planting holes for setting the seedling root ball, or may be formed as linear projections so as to be continuous with the lower portions of the plurality of planting holes.
In order to make the flow of the nutrient solution smoother, it is more preferable that the linear protrusions be formed so as to be parallel to the flow of the nutrient solution.
In the present invention, it is preferable that the total area of the upper surfaces of the plurality of projections is smaller than the area of the bottom surface of the cultivation bed groove excluding the projections. Thus, the growth of the roots of the seedling growing in water is not hindered, and a sufficient growth space can be secured. If the area of the bottom surface of the cultivation bed groove excluding the projections is smaller than the total area of the upper surfaces of the plurality of projections of the cultivation bed groove, the space for the growth of the submerged roots is reduced, and there is a possibility that the effect of inhibiting the growth of the overground part of the plant body is caused by the effect of restricting the root region due to the restriction of the growth region of the submerged roots.
The areas of the upper surfaces of the projections may be the same or different.
The grooves for flowing the nutrient solution are formed between the projections, but the width of the grooves can be appropriately determined according to the width of the culture bed grooves, the width of the projections, and the number of the projections. The width of the slots may be the same or different.
The member for nutriculture of the present invention has a hydrophilic sheet laid on the bottom surface of a culture bed groove. Although the hydrophilic sheet extends on the bottom surface of the culture bed groove, the higher the degree of adhesion between the convex portion of the culture bed groove and the hydrophilic sheet, the more the nutrient solution can be supplied to the culture medium portion of the seedling without interrupting the supply of the nutrient solution. In the conventional method in which the side surfaces of the convex portions are perpendicular, the hydrophilic sheet hardly follows the side surfaces of the convex portions, and air bubbles are generated between the side surfaces of the convex portions and the hydrophilic sheet. Even when the side surfaces of the projections are perpendicular, the hydrophilic sheet can be stretched so as to adhere to the side surfaces of the projections, but in practice, it is difficult to take the above-described trouble for all of the projections, and a considerable load is applied to the hydrophilic sheet, so that the hydrophilic sheet is likely to be broken due to cracking.
In the nutriculture member according to the present invention, since the side surfaces of the convex portions are inclined such that the upper surfaces of the convex portions are smaller than the lower surfaces of the convex portions, the adhesion between the side surfaces of the convex portions and the hydrophilic sheet is improved. In the present invention, it is not necessary to take time to stretch the hydrophilic sheet, and the nutrient solution can be smoothly supplied to the culture medium portion of the seedling while preventing the hydrophilic sheet from being damaged.
The hydrophilic sheet is not particularly limited in kind as long as it can draw up a liquid by capillary action. Further, a material which does not allow the seedling roots to pass through is more preferable. Examples thereof include paper and cloth.
In order to prevent the nutrient solution from leaking from the culture bed groove, a waterproof sheet is preferably laid between the culture bed groove and the hydrophilic sheet. By using the waterproof sheet, leakage of the nutrient solution can be suppressed even in the case of performing cultivation by connecting a plurality of cultivation bed grooves.
Another aspect of the present invention is a nutriculture method of culturing a root ball by flowing a nutrient solution on a bottom surface of the culture bed tank using the above-described nutriculture member of the present invention.
According to the nutriculture method of the present invention, it is possible to produce roots having two different forms and functions of submerged roots growing in water and submerged roots held in moisture to have many root hairs. The roots in the water actively absorb fertilizer and water in the nutrient solution, and on the other hand, the roots in the moisture directly absorb oxygen from the moisture.
The cultivation method can be carried out not only by dissolved oxygen, but also in high temperature period in which dissolved oxygen is likely to be insufficient, and the roots of the plant will not fall into an anoxic state.
In the case of cultivating leafy vegetables such as spinach, since the vegetables are basically planted in a plurality of rows, the cultivation bed has a wide shape, but even in such a wide bed, water can be guided to the entire groove formed between the projections.
The nutrient solution cultivation method of the present invention can be suitably applied to cultivation of leaf vegetables, particularly spinach, and vegetables for pickled vegetables (for example, komatsuna).
Example 1
The height of the convex portion was 5mm, the width of the upper surface of the convex portion was 24.5mm, and the width of the lower surface of the convex portion was 34.5 mm. A cultivation bed groove with a length of 4m, wherein the side surface of the convex part is inclined 45 degrees relative to the lower surface of the convex part, and the side surface of the convex part is inclined 135 degrees relative to the upper surface of the convex part.
Fig. 3 is a schematic view of the cultivation bed groove, and the lower view is an enlarged view of the convex portion surrounded by ○ in the upper view.
Comparative example 1
A cultivation bed groove having a height of 5mm and a cross-sectional width of 24.5mm was formed, and the length of the side surface of the projection perpendicular to the side surface was 4 m.
Evaluation of
Using the cultivation bed tank manufactured as described above, a waterproof sheet and a hydrophilic sheet were laid, and the frequency of generation of air bubbles at the upper portion of the convex portion or the vicinity of the convex portion was examined.
It was confirmed that bubbles were generated at about 80 positions in the culture bed tank of comparative example 1, and the positions where bubbles were generated in the culture bed tank of example 1 were less than 10 positions.
After spinach was planted on the planting plates in the above-described state and cultivated for about 7 days, 5 plants were withered at the positions where the air bubbles were generated in comparative example 1, but no withered plants were found in example 1, because the supply of the nutrient solution was interrupted.
In addition, when the nutriculture medium-cultivating member shown in FIG. 3 is installed, a plurality of cultivation bed grooves are continuously installed in the longitudinal direction, and are installed at an inclination of about 1/80 degrees. In this case, the entire inner surface is covered with a water-repellent sheet to prevent water leakage at each of the continuously provided positions, and a hydrophilic sheet such as cloth or paper is laid on the water-repellent sheet.
Next, the planting bed is covered with the planting plate, and the seedling root ball is caused to sink from the planting hole, whereby the seedling root ball can be easily placed on the projection of the planting bed facing directly below the planting hole. Then, the nutrient solution is made to flow from the upstream side to the downstream side of the cultivation bed toward the part of the groove on both sides of the convex part, and the liquid level height in the groove is about 2 to 3mm when the flow rate of the nutrient solution is 10 Rett/min per bed. Is approximately half the height of the projection. A moisture space is formed between the lower surface of the planting flat plate and the liquid level of the nutrient solution in the groove.
Claims (7)
1. A member for a nutriculture film method, comprising:
a planting plate having a plurality of planting holes for setting a root ball of the seedling;
a cultivation bed groove having a plurality of projections; and
a hydrophilic sheet laid on the bottom surface of the cultivation bed groove,
the side surface of the convex portion is inclined such that the upper surface of the convex portion is smaller than the lower surface of the convex portion,
the nutrient solution flows from the upstream side to the downstream side at the bottom surface of the culture bed groove and toward the groove portions on both sides of the convex portion, and the nutrient solution is drawn up by the capillary action of the hydrophilic sheet to contain water in the hydrophilic sheet,
the height of the convex part from the bottommost surface of the cultivation bed groove is 3-10 mm,
the convex portion is formed linearly so as to be parallel to the flow of the nutrient solution.
2. The nutriculture film method member according to claim 1,
the total area of the upper surfaces of the plurality of convex parts is smaller than the area of the bottom surfaces of the cultivation bed grooves except for the convex parts.
3. The nutriculture film method member according to claim 1,
the width of the convex part is about 4mm wider than the diameter of the used seedling root ball.
4. The nutriculture film method member according to claim 2,
the width of the convex part is about 4mm wider than the diameter of the used seedling root ball.
5. The member for nutriculture film method according to any one of claims 1 to 4,
the side surfaces of the projections are inclined at 20 to 80 degrees with respect to the lower surfaces of the projections.
6. The member for nutriculture film method according to any one of claims 1 to 4,
the side surface of the convex portion is inclined at 100 to 160 degrees with respect to the upper surface of the convex portion.
7. A method for cultivating a film by using nutrient solution is characterized in that,
a method of cultivating a root ball by flowing a culture medium through the bottom surface of the cultivation bed tank using the member for a nutriculture film method according to any one of claims 1 to 6.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012-288485 | 2012-12-28 | ||
| JP2012288485 | 2012-12-28 | ||
| PCT/JP2013/068977 WO2014103414A1 (en) | 2012-12-28 | 2013-07-11 | Nutriculture member and nutriculture method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104320967A CN104320967A (en) | 2015-01-28 |
| CN104320967B true CN104320967B (en) | 2020-04-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380003118.3A Active CN104320967B (en) | 2012-12-28 | 2013-07-11 | Nutriculture member and nutriculture method |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP6506026B2 (en) |
| CN (1) | CN104320967B (en) |
| AU (1) | AU2013367876B2 (en) |
| SG (1) | SG11201500474PA (en) |
| WO (1) | WO2014103414A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017143801A (en) * | 2016-02-18 | 2017-08-24 | 三菱ケミカル株式会社 | Plant cultivation method |
| CN106171379A (en) * | 2016-06-30 | 2016-12-07 | 广西南宁十分园生态农业科技有限公司 | A kind of Herba Spinaciae high-yield planting method |
| CN111031787B (en) * | 2017-11-08 | 2022-09-30 | 三菱化学水解决方案株式会社 | Method for increasing ascorbic acid content of leaf vegetables |
| CN112105255B (en) * | 2018-05-23 | 2022-09-27 | 三菱化学水解决方案株式会社 | Nutriculture member, nutriculture method, and nutriculture system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NZ203051A (en) * | 1982-01-19 | 1986-04-11 | Nutrient Film Tech Ltd | Hydroponic cultivation:split root systems in differing solutions |
| CN201509473U (en) * | 2009-05-22 | 2010-06-23 | 高远峰 | Integral soilless culturing device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63251026A (en) * | 1987-04-08 | 1988-10-18 | 株式会社クラレ | Hydroponic apparatus |
| JP2791781B2 (en) * | 1988-12-24 | 1998-08-27 | 株式会社サンスイ | Hydroponics method and hydroponics panel |
| JPH052660U (en) * | 1991-06-28 | 1993-01-19 | 株式会社クボタ | Capillary hydroponics device |
| JP3189264B2 (en) * | 1995-02-06 | 2001-07-16 | 太洋興業株式会社 | Nutrient cultivation method by culture liquid thin film method |
| JP2005095135A (en) * | 2003-08-22 | 2005-04-14 | Kiyoshi Nakamura | Hydroponic apparatus |
-
2013
- 2013-07-11 JP JP2014554177A patent/JP6506026B2/en active Active
- 2013-07-11 AU AU2013367876A patent/AU2013367876B2/en not_active Ceased
- 2013-07-11 WO PCT/JP2013/068977 patent/WO2014103414A1/en active Application Filing
- 2013-07-11 SG SG11201500474PA patent/SG11201500474PA/en unknown
- 2013-07-11 CN CN201380003118.3A patent/CN104320967B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NZ203051A (en) * | 1982-01-19 | 1986-04-11 | Nutrient Film Tech Ltd | Hydroponic cultivation:split root systems in differing solutions |
| CN201509473U (en) * | 2009-05-22 | 2010-06-23 | 高远峰 | Integral soilless culturing device |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2013367876B2 (en) | 2017-05-25 |
| SG11201500474PA (en) | 2015-04-29 |
| JP6506026B2 (en) | 2019-04-24 |
| CN104320967A (en) | 2015-01-28 |
| AU2013367876A1 (en) | 2014-09-18 |
| JPWO2014103414A1 (en) | 2017-01-12 |
| WO2014103414A1 (en) | 2014-07-03 |
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