JPH0440836A - Nutriculture of blanched vegetable and utensil therefor - Google Patents

Abstract

PURPOSE:To accomplish blanching the stems of various vegetables leading to higher commercial value by regulating the setting height for a shading panel, in accordance with the growth of the stems of blanched vegetables, so that its height come to that close to the boundary between the leaves and stems of said vegetables. CONSTITUTION:A setting panel 1 is placed on a nutrient solution 6, a shading panel 2 is placed thereon, and the setting height for said panel 2 is regulated, in accordance with the growth of the stems of blanched vegetables, so that its height come to that close to the boundary between the leaves and stems of said vegetables, thereby sunlight intrusion into the space below the shading panel is prevented owing to a peripheral shading screen 4 around the panel 2. With the present method, when blanched honewort is cultivated, its length 4 weeks after its setting has become 30 - 40 cm, compared to, generally, 15 - 20 cm in the case of conventional soil culture (non-blanching) and 25 - 30cm for conventional hydroponics (non-blanching); therefore, the present growth is very favorable.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a hydroponic cultivation method for soft white vegetables and an apparatus used therein.

In this specification, the term "soft white vegetables" refers to vegetables that have been softened and whitened by shading or the like and can be sold as commercial products, and excludes green onions (soft white onions). These include celery, golden cabbage, green onions, green onions, yellow chives, shallots, and asparagus.

[Prior Art] Traditionally, it has been common for plants such as Mitsuba to be commercialized while still green, but the disadvantage is that the stems are hard and difficult to eat when green.

Perhaps because of this, there is a tendency in some regions, such as the Kanto region, for example, for Mitsuba with soft white stems to have high commercial value and sell well.

Furthermore, there is a tendency for green onions with soft white stems to sell well.

For this reason, soft white vegetables with white stems can be expected to have the advantage of being differentiated from conventional green vegetables as products that meet consumers' luxury preferences.

On the other hand, vegetable cultivation using the hydroponic method has been practiced for a long time, and has the following advantages: reducing continuous cropping problems, high yields, labor saving, and high water and fertilizer usage efficiency. It has advantages over soil cultivation, such as being able to grow in areas with poor soil.

However, as seen in the case of soft-white onions, the technology for softening edible plants has traditionally been fixed as common sense, such as applying soil mounds to soften the white. has not been done at all.

[Invention or problem to be solved] As mentioned above, the present invention is based on the knowledge that soft white vegetables have differentiating merits as a product that meets consumers' luxury preferences. The purpose is to provide a hydroponic cultivation method for short soft white vegetables.

[Means for Solving the Problems] The present invention arranges a planting panel having planting holes on a nutrient solution, and arranges thereon a light-shielding panel having through holes corresponding to the planting holes. According to the growth of the stems of vegetables, the installation height of the light-shielding panel is adjusted so that the height is near the boundary between the stems of soft-white vegetables, and a peripheral light-shielding curtain is placed around the periphery of the light-shielding panel. The present invention relates to a hydroponic cultivation method for soft-white vegetables that prevents light from entering the area below the light-shielding panel, and an apparatus used therein.

Moreover, the present invention arranges a planting panel having planting holes on the nutrient solution, and arranges thereon a light-shielding curtain having through-holes corresponding to the planting holes and having a size sufficiently larger than the planting panel. As the stems of vegetables grow, adjust the installation height of the light-shielding curtain so that the height is near the boundary between the stems of soft-white vegetables, and let the peripheral edge of the light-shielding curtain hang downward. The present invention relates to a hydroponic cultivation method for soft-white vegetables that prevents light from entering the area below the light-shielding curtain, and an apparatus used therein.

[Function] In the hydroponic cultivation method of the present invention, a height-adjustable light-shielding panel or a light-shielding curtain is used in addition to the planting panel, so the stems of soft-white vegetables can be grown without sacrificing the advantages of the hydroponic cultivation method. Can be easily softened.

Furthermore, as a result of various cultivation experiments, the present inventors have found that, although the details are still unclear, the border between the stems of vegetables has a function that can be called a light sensor related to the growth physiology of vegetables. It is presumed that there is a part of the plant that has this, and we found that this may be closely related to the growth of stem diameter and stem length. Although it has not been established theoretically, it has been confirmed that growth can actually be promoted by placing a light-shielding panel or curtain near the border. It is presumed that if the amount of light hitting the boundary region is somehow reduced from the random natural state, the stem will grow rapidly in order to grow further and take in more light to survive.

The method of the present invention realizes the cultivation of soft white vegetables, a possibility of which had not even been considered in the past, using hydroponic cultivation by developing a light-shielding soft white method that does not require mounding of soil, and based on the above-mentioned knowledge. The growth of soft-white vegetables is promoted by placing a light-shielding panel or a light-shielding curtain near the border area. Therefore, due to the growth promoting effects of hydroponic cultivation and light control,
Not only does it have an excellent effect on increasing yield and adjusting the harvest time, but it also has the surprising effect of increasing the softness of the meat and improving its commercial value.

In addition, dark areas have good air circulation and are free from stuffiness and contamination by pathogens, ensuring healthy vegetable growth.

[Example] As mentioned above, soft white vegetables to which the cultivation method and equipment of the present invention are applied include those of the liliaceous family such as green onions, green onions, yellow chives, shallots, and whit asparagus; , dill, celery, golden cabbage, and other members of the umbellifer family.

Hydroponic methods are known as hydroponic cultivation methods, and specific examples thereof include sump molding, circulation type, spraying type, and culture solution thin film circulation type.

This hydroponic cultivation method is preferably carried out indoors, which is further equipped with light irradiation time control equipment, temperature control equipment, and the like. In the method of the present invention, the liquid fertilizer, sunlight hours, amount of oxygen supplied to the roots, etc. are controlled by the hydroponic cultivation method according to the growth physiology of soft white vegetables, for example, so that they will grow most easily.

Next, embodiments of the hydroponic cultivation method and apparatus of the present invention will be described with reference to the drawings.

Figure 1 is a perspective view showing an example of the hydroponic cultivation method and equipment of the present invention, and Figures 2 and 3 are cross-sectional views showing the state immediately after planting and after growth, respectively, when the method and equipment shown in Figure 1 are used. Figures 4 and 5 are partial perspective views showing a state in which the upper light-shielding curtain is further disposed and a state in which the upper light-shielding curtain is pulled from two opposing directions, respectively, when the method and apparatus shown in Fig. 1 are used; FIG. 6 is a sectional view showing an example of a through hole formed in a light shielding panel used in the method of the present invention.

The equipment used in Figures 1 to 3 is the nutrient solution (6).
A device used with a device such as a hydroponic bed (5) for supplying and storing water, for example, with a diameter of 25 to
Planting panel (1) with a 30mm planting hole (1a)
and, for example, a diameter of 40 to 5 mm corresponding to the planting hole (1a).
A light-shielding panel (2) having a through hole (2a) of 0.0 mm, a peripheral light-shielding curtain (4) attached to the peripheral edge of the light-shielding panel ('2J) using a fitting part +4- (3), and the light-shielding panel This is a hydroponic cultivation device consisting of a height-adjustable support means (wire (8) and support stand (9) in the illustrated example) for holding the plant at a desired height.

Although the method for planting the soft white vegetable 00) in the planting hole (1a) is omitted from the drawing, any known method using, for example, a foamed polyurethane filler may be employed without particular limitation.

Using such a device, place the planting panel (
1), a light-shielding panel (2) is placed on top of it, and as the stem of the soft white vegetable α)) grows, the soft white vegetable 00)
Adjust the installation height of the light-shielding panel (2) so that the height is near the boundary between the stems of the light-shielding panel (2).
The peripheral light-shielding curtain (4) on the peripheral edge of the light-shielding panel prevents light from entering the area below the light-shielding panel.

Note that the sword is a hanging member through which the wire (8) is passed.

That is, as shown in FIG. 2, immediately after planting, the seedlings are held at a low position by the light-shielding panel.

In Figure 2, the light-shielding panel (2) is placed on the planting panel (1), but the position of the light-shielding panel (2) is at the height near the boundary between the leaves and stems of the soft white vegetable (Tan). They are to be held together, and may for example be held by said support means if desired.

In addition, in Fig. 2, the fitting member (3) and the peripheral light-shielding curtain (4) are shown.
) is shown before it is installed.

As the soft-white vegetables grow and the position of the border between the leaf and stem becomes higher, the position of the light-shielding panel (2) will be raised accordingly, as shown in Figure 3. Adjustment is effected by said height-adjustable support means.

Specific examples of height-adjustable support means include the wire (8) and support stand (9) shown, as well as wires (8) and supports (9) arranged on the planting panel (1) and having different lengths as required. Various types of equipment such as a column to be replaced, a one-torque hoisting height adjustment device, an automatic adjustment device, etc. can be adopted without particular limitation.

There are no particular limitations on the materials for the planting panel (1) and the hydroponic bed (5); they may be resin foam molded products made of polystyrene, polyurethane, polyolefin such as polyethylene, polypropylene, etc., or they may be economical; It is preferable because it is light and easy to transport and assemble, has heat insulating properties, and has appropriate elasticity to ensure a secure connection.

The material for the light-shielding panel ('2J) is not particularly limited as long as it can block light, and foamed styrene resin boards, plywood boards, wood, galvanized iron boards, corrugated boards, plastic boards, plastic corrugated boards, etc. can also be used. Of these, styrene resin foam molded products are preferred because they are lightweight, have excellent heat retention, and are easy to process and assemble.

In addition, when using expanded polystyrene resin for the light-shielding panel (2), it is possible to improve the light-shielding property by adding a colored material by mixing pigments, dyes, etc., or applying paint to the surface. It is preferable because it can be enhanced.

The through hole (2a) formed in the light shielding panel (2) is the sixth through hole (2a) formed in the light shielding panel (2).
As shown in the figure, it is preferable that the inner wall of the through-hole (2a) is a rounded curved surface with a medium-high shape, since this eliminates the risk of damaging the soft white vegetables more reliably. It is also conceivable that the inner wall of the through-hole (2a) has a light-concentrating effect to concentrate light on a site of the cultivated plant that is assumed to have the above-mentioned photosensing function, thereby promoting growth.

As the peripheral light-shielding curtain (4), a film having light-shielding properties,
Sheets, paper, woven fabrics, non-woven fabrics, etc. can be used, and for example, plastic films such as polyethylene and polyvinyl chloride can be used in one color or the like.

The dimensions of the peripheral light-shielding curtain (4) may be such that they can sufficiently block light even when the light-shielding panel (2) is held at the highest position.

By employing such a cultivation method, the area below the boundary between the leaves and stems of the soft white vegetable is always shielded from light even if the height changes due to growth.

Furthermore, as shown in FIGS. 4 and 5, there is provided a top shade board (II) having a through hole (lla) corresponding to the planting hole (la).
Arrange two layers on the light-shielding panel (2) and pull them in different directions (see Figure 4), or pull one layer of top light-shielding curtains 01) from two opposing directions (see Figure 5). ), and the soft white vegetables (IQ) that have penetrated - the upper surface light-shielding curtain (I
It is preferable to bring the edges of the through holes (lla) in I) into contact to block light, since the boundary between whitening and soft whitening is clearly demarcated.

In addition, instead of the above-mentioned light-shielding panel (Z, fitting member (3), peripheral light-shielding curtain (4), and upper surface light-shielding curtain 01), a through-hole corresponding to the planting hole is provided, and the size is more than that of the planting panel. Using a large shade curtain, place a planting panel in the nutrient solution, then place the shade curtain above it, and as the stems of the soft white vegetables grow, Adjust the installation height of the light-shielding curtain so that the height of the light-shielding curtain is the same, and hang the peripheral edge of the light-shielding curtain downward, and preferably pull the portion of the light-shielding curtain that has the through hole from two opposing directions to penetrate. The same effect as shown in FIGS. 1 to 5 can be obtained by bringing the edges of the through-holes of the light-shielding curtain into contact with the soft-white vegetables, and the light-shielding panel can be omitted.

According to the method of the present invention, various soft white vegetables such as Japanese cabbage, green onions, and Japanese parsley can be efficiently cultivated.

For example, when we cultivated soft-white honeysuckle using the method of the present invention, its length 4 weeks after planting was 15 to 20 cm using the conventional soil cultivation method (non-soft white), and 15 to 20 cm when using the conventional hydroponic method (non-soft white). While 25-30cm is common, 30cm
-40 cffi, and very good growth was observed.

In addition, the experimental cultivation cycle from planting to harvest of Mitsuba (soft white) using the method of the present invention was approximately 32 days, compared to approximately 40 days using the conventional hydroponic method (non-soft white). Ta.

Furthermore, according to experiments with green onions (soft white), the cultivation cycle was changed to about 65 days, compared to about 80 days using conventional hydroponic methods (non-soft white).

[Effect of the invention] The hydroponic cultivation method of the present invention and the equipment used therein,
The stems of various vegetables can be softened and whitened, thereby improving their commercial value.

Furthermore, compared to conventional hydroponic methods, vegetables with better growth and higher quality and yield can be grown in a shorter cultivation period, and yields can be improved.

[Brief explanation of the drawing]

Figure 1 is a perspective view showing an example of the hydroponic cultivation method and equipment of the present invention, and Figures 2 and 3 are cross-sectional views showing the state immediately after planting and after growth, respectively, when the method and equipment shown in Figure 1 are used. Figures 4 and 5 are partial perspective views showing a state in which the upper light-shielding curtain is further disposed and a state in which the upper light-shielding curtain is pulled from two opposing directions, respectively, when the method and apparatus shown in Fig. 1 are used; FIG. 6 is a sectional view showing an example of a through hole formed in a light shielding panel used in the method of the present invention. (Main symbols in the drawing) (1): Planting panel (1a) Planting hole (2) Shading panel <2a): Through hole (4) 1 peripheral shading curtain (5), hydroponic bed (6): Nutrient liquid Figure 1

Claims (1)

[Scope of Claims] 1. A planting panel having planting holes is placed on a nutrient solution, and a light shielding panel having through holes corresponding to the planting holes is placed on top of the planting panel, and the stems of soft white vegetables are grown. In addition, a hydroponic cultivation method for soft-white vegetables is provided, in which the installation height of a light-shielding panel is adjusted, and a peripheral light-shielding curtain is provided on the periphery of the light-shielding panel to prevent light from entering the area below the light-shielding panel. 2. Arrange one or two layers of upper surface light-shielding curtains having through holes corresponding to the planting holes on the light-shielding panel, and pull the upper surface light-shielding curtains from two opposing directions to apply upper surface light-shielding to the soft white vegetables passing through. 2. The hydroponic cultivation method according to claim 1, wherein the edges of the through holes of the curtain are brought into contact to block light. 3 Place a planting panel having planting holes on the nutrient solution, place a light-shielding curtain having through holes corresponding to the planting holes and a size sufficiently larger than the planting panel on top of the nutrient solution, and place the stem part of the soft white vegetable. A hydroponic cultivation method for soft-white vegetables, which adjusts the installation height of a light-shielding curtain according to the growth of the vegetables, and hangs the peripheral edge of the light-shielding curtain downward to prevent light from entering the area below the light-shielding curtain. 4. The hydroponic cultivation method according to claim 3, wherein the portion of the light-shielding curtain having the through-holes is pulled from two opposing directions, and the edges of the through-holes of the light-shielding curtain are brought into contact with the soft-white vegetables passing through to block light. 5 A device used with a device for supplying and storing a nutrient solution, which includes a planting panel having a planting hole, a shading panel having a through hole corresponding to the planting hole, and a peripheral shading attached to the periphery of the shading panel. An apparatus used for hydroponic cultivation comprising a curtain and a height-adjustable support means for holding the light-shielding panel at an arbitrary height. 6 A device used with a device for supplying and storing a nutrient solution, which includes a planting panel having planting holes, a light-shielding curtain having through-holes corresponding to the planting holes and having dimensions sufficiently larger than the planting panel, and the light-shielding curtain. An apparatus used for hydroponic cultivation consisting of a height-adjustable support means for holding the curtain at an arbitrary height.