JPH05284865A - Plant culturing device and method for feeding and discharging water to culture bed thereof - Google Patents

Abstract

PURPOSE:To obtain a subject device capable of uniformly feeding water and culture solution to each culture bed and naturally discharging water and culture solution by arranging a feed means for water and culture solution and a siphon tube for discharge on a culture bed having uneven bottom plate. CONSTITUTION:Water and a culture solution are uniformly fed from a water supply pipe 20 through a fine tube 22 so as to immerse the bottom of a nursery pot P. Then, water and culture solution are fed till a place where a siphon pipe 30 arranged in a depressed hole 15 is operated and are discharged by the siphon pipe 30.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus and method for raising seedlings planted in seedling raising pots (pots), and more particularly to a plurality of cultivation beds on which seedling raising pots are placed. Water and nutrient solution are simultaneously and uniformly supplied to the plant, and after the plant absorbs this moisture and nutrients, the plant water culture apparatus and the plant cultivation apparatus are designed to simultaneously discharge the supplied water and nutrient solution from each cultivation bed. Regarding the water supply and drainage method.

[0002]

2. Description of the Related Art In recent years, greenhouse cultivation in greenhouses has become popular as a means for early and large-scale production of plants.

In the house, a synthetic resin such as vinyl chloride resin, polyethylene or the like, or a plant seedling planted in a pottery potted with a water or nutrient solution is periodically supplied to the plant seedlings. It is carried out.

Conventionally, a seedling-growing pot in which plant seedlings are planted is placed on a cultivation bed, and thus water or a nutrient solution supplied into the cultivation bed is sucked from the bottom surface of the seedling-growing pot so that the seedling-raising pot is placed in the seedling-raising pot. A common method is to provide water and nutrients to the planted seedlings.

[0005] For example, conventionally, plant cultivation has been carried out by the plant cultivation device of the present applicant's invention (Japanese Patent Application No. 3-309287).

This plant cultivating apparatus, as shown in FIG.
Horizontally placed bottom plate 1a having an uneven shape and the bottom plate 1a
Cultivation floor 1 composed of side plates 1b arranged around, a supply pipe 3 for supplying water or nutrient solution into the culture floor 1, and water or nutrient solution in the cultivation floor 1 is drained from the bottom surface. Drain valve 5
And the water and nutrient solution supplied from the supply pipe 3 are discharged to the outside by manual or automatic operation of the drain valve 5 through the drain pipe 6. It was

[0007]

However, the above-mentioned conventional plant cultivating apparatus has the following problems.

That is, the above-described conventional plant cultivation apparatus supplies water or a nutrient solution to a cultivation floor having an uneven bottom plate, so that water or nutrients are supplied from the bottom of a nursery pot placed on the uneven bottom plate. Since the nutrient solution is absorbed, it is possible to prevent water burn due to water on the leaves, and since the bottom plate of the cultivation floor has an uneven shape, drainage is completely formed, so root rot etc. can be prevented effectively. However, it was very troublesome to manually operate the drain valve when draining water or nutrient solution from the cultivation bed.

In particular, in large-scale cultivation in which a large number of the above-mentioned cultivation beds are arranged, the work of opening and closing each drainage valve in turn requires a great deal of labor, and water and nutrient solutions are instantaneously supplied from each cultivation bed. In addition, since it cannot be discharged at the same time, there is a problem that the plants placed on each cultivation bed cannot be raised uniformly.

Further, if a solenoid valve or the like is adopted as the drain valve so that the drain valve can be automatically opened and closed, the above problems can be solved. However, in this construction, a large number of solenoid valves Since there is a control unit for controlling, there is a problem that the cost becomes high.

The present invention has been made in view of the above circumstances, and uniformly supplies water and a nutrient solution to each cultivation bed, and after the plant absorbs water and nutrients sufficiently, The present invention provides an apparatus and a method in which the water or the nutrient solution is naturally discharged by supplying the nutrient solution.

[0012]

The present invention is directed to a cultivation bed having an uneven bottom plate on which a nursery pot in which a plant is planted is placed, and a supply means for uniformly supplying water or a nutrient solution to a plurality of cultivation beds. And a siphon tube for discharging water and nutrient solution supplied to each cultivation floor and each cultivation bed, and a plant cultivation device characterized by comprising Is.

Further, according to the present invention, a constant amount of water or nutrient solution is simultaneously and evenly supplied to a plurality of cultivation beds having an uneven bottom plate on which a nursery pot for planting the plants is placed, and the plants are planted. Water and nutrients were given, and after that, water and nutrient solution were simultaneously and uniformly supplied to each cultivation bed again, and the water and nutrient solution supplied into the cultivation floor were discharged to the outside by the siphon principle. The above object is achieved by providing a characteristic method for supplying and draining a cultivation bed.

[0014]

In the present invention, a constant amount of water or a nutrient solution is simultaneously and uniformly supplied to a plurality of cultivation beds on which seedling-growing pots are placed, so that plants planted in the seedling-growing pots can be treated. When water and nutrients are given by means of water and then water or nutrient solution is supplied again simultaneously and uniformly, the water and nutrient solution are naturally discharged from the cultivation bed.

In other words, in the present invention, since the siphon pipe is adopted as the means for discharging the water and the nutrient solution of the cultivation bed, the water supplied to the cultivation bed and the constant level of the nutrient solution are provided. When it reaches, the siphon tube works, water in the cultivation bed,
The nutrient solution will be discharged to the outside.

For example, when the water level is raised above the line C in FIG. 3, water or nutrient solution begins to flow out to one end of the discharge path opened at the line D below the line C, and the water level is temporarily extended to the line A. If you raise it, the water or nutrient solution that started to flow out
B from the line to the line C and below the line C
The pressure difference between -D causes it to be pushed up to line C and expelled (according to the siphon principle).

Therefore, water or nutrient solution is once supplied to a position below the line C, thereby giving water and nutrients to the plants in the nursery pots arranged on the cultivation bed, and then above the line C, for example A.
When water or nutrient solution is supplied up to the line, the siphon works as described above to discharge it.

A supply means for uniformly supplying water or a nutrient solution to each cultivation bed (for example, a water supply pipe is branched through a header, and a thin pipe having a large internal resistance is provided from this manifold to each cultivation bed. Siphons arranged on each cultivation bed, since the water and the nutrient solution are simultaneously and uniformly supplied by the pump which supplies water or the nutrient solution at a high pressure from the base end of the water supply pipe. The pipes work at the same time so that the discharge is completed at the same time, and eventually the plants placed on each cultivation bed can be raised uniformly.

[0019]

Embodiments of the plant cultivation apparatus and the method for supplying and draining a cultivation floor according to the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a perspective view showing a part of a plant cultivating apparatus according to the present invention, FIG. 2 is a sectional view showing a main part of the same embodiment, and FIG. 3 is an enlarged sectional view showing a main part of the same embodiment. FIG. 4 is a plan view schematically showing the entire plant cultivation device according to the same embodiment.

The feature of the plant cultivating apparatus according to the present invention is that it has a cultivating floor 10 having an uneven bottom plate 11 on which a nursery pot p in which a plant f is planted is placed, and a plurality of cultivating floors 1.
Supply means 20 for uniformly supplying the nutrient solution to 0, 10, ...
And the cultivation floors 1 arranged on the respective cultivation floors 10, 10 ,.
0, 10, ... A siphon tube 30 for discharging the nutrient solution supplied thereto.

Further, the feature of the method for supplying and draining a cultivation floor according to the present invention is that a plurality of cultivation beds 1 having an uneven bottom plate 11 on which a nursery pot p in which a plant f is planted are placed.
0, 10, ... A constant amount of nutrient solution is simultaneously and uniformly supplied to give water and nutrients to the plant f, and thereafter, the nutrient solution is again supplied to each of the cultivation beds 10, 10 ,. The nutrient solution supplied to the cultivation beds 10, 10, ... Simultaneously and uniformly is discharged to the outside by the siphon principle.

The cultivating floor 10 is for placing a plurality of seedling-growing pots p in which plants f are planted and raising the seedlings. The bottom plate 11 has an irregular shape, and the bottom plate 11 is surrounded by the bottom plate 11. It is configured by integrally molding the provided side walls 13, 13, ....

Further, a depression 15 for arranging the siphon pipe 30 is formed at an arbitrary position on the bottom plate 11 of the cultivation floor 10.

The siphon tube 30 is a two-layer tube consisting of an inner tube 31 and an outer tube 37 fitted into the inner tube 31, and is a synthetic resin such as vinyl chloride resin or phenol resin, or various metal materials. It consists of

The interior pipe 31 is divided into two parts by a partition wall 32, and a suction path 33 for sucking the nutrient solution is formed.
And a discharge path 34 for discharging the discharge path, and in particular, the discharge path 34 extends downward and has an inverted L-shape in a side view.

On the other hand, the outer tube 37 is a lid formed by closing one end of a cylindrical body, and the inner tube 31 has a discharge passage 3
4 is attached from the opposite side as shown in FIG.

The siphon tube 30 is connected to the cultivation floor 10
When the discharge passage 34 penetrates the depression 15 and protrudes downward of the cultivation floor 10 when the depression 35 is arranged in the depression 15 of FIG. A bottom portion 33a of the interior pipe 31 by contacting the bottom plate 11 of the
Then, a gap s is formed between the bottom plate 11 of the cultivation floor 10.

Therefore, the nutrient solution enters into the siphon tube 30 through the gap s, and when the siphon tube 30 works, the invaded nutrient solution flows from the suction passage 33 to the discharge passage 3
It will be discharged to the outside through No. 4.

By the way, as shown in FIG. 4, the cultivation floor 10 on which the siphon tube 30 is arranged is set on the mounting tables 40, 40,
... are arranged side by side, and thus the nutrient solution is supplied to each cultivation bed 10, 10, ... by the supply means 20.

In this supply means 20, a branch pipe 23a, which branches from a header 21 and runs parallel to the above-mentioned mounting tables 40, 40, ..., And a water storage tank 25 are connected by a water supply pipe 20a via a pump 26. The configuration, the manifold 23a
22 hanging from each cultivation floor 10, 10, ...
As a result, the nutrient solution is supplied to each of the cultivation beds 10, 10, ... Simultaneously and uniformly.

That is, since the thin tube 22 has a very small inner diameter and a large internal resistance as compared with the water supply pipe 20a or the manifold 23a, when the pump 26 applies pressure to supply the nutrient solution, The nutrient solution is supplied from the thin tubes 22, 22, ... Simultaneously and uniformly.

Therefore, the siphon pipes 30 arranged on the respective cultivation floors 10, 10, ... Work at the same time, and the discharge is completed at the same time. By extension, the respective cultivation beds 10, 10 ,.
It will be possible to evenly raise the seedlings of the plant f arranged in.

A fertilizer supply section 27 for supplying fertilizer to the water storage tank 25 is connected to the water storage tank 25, and the headers 21, 21, ... ... are provided so that the nutrient solution is supplied in units of the mounting table 40.

Further, the nutrient solution discharged from the siphon pipe 30 is drawn by the pump 28 provided in the drain pipe 20b, and then passes through the drain pipe 20b and the cleaner 29 to the water storage tank 25 again. It is supposed to be refluxed.

In FIG. 4, the pipe line shown on the mounting table 40 on the right side shows only the water supply system, and the pipe line shown on the mounting table 40 at the center shows only the drainage system, and on the left side. It simply shows the water supply and drainage system.

Next, the water supply / drainage method of the cultivation floor will be described by taking the plant cultivation device as an example.

First, only the solenoid valve 24 in one unit (one of the mounting tables 40) is opened, and the mounting table 4 is opened.
0 is supplied with the nutrient solution to the positions below the line C shown in FIG. 3 (primary water supply), and water is added to the plants f of the cultivation floors 10, 10 ,. And provide nutrients.

After that, the nutrient solution is re-supplied to the A line above the C line (secondary water supply), and the siphon pipe 30 is activated, so that the nutrient solution supplied into the cultivation beds 10, 10 ,. Let it discharge naturally.

Then, when the processing of one unit is completed,
Other units may be sequentially processed as described above.

The present invention is not limited to the above construction, but may be as described below.

For example, the supply means 20 may include the header 2
The branch pipe 23a and the water storage tank 25 that branch from 1 and run in parallel on the mounting tables 40, 40, ... Are connected by the water supply pipe 20a via the pump 26, and
There is no limitation to the configuration in which the thin tubes 22, 22, ... Are attached to a, and the nutrient solution is uniformly applied to each cultivation bed 10, 10 ,. It is also possible to be supplied.

The siphon pipe 30 is not limited to a two-layer pipe composed of the inner pipe 31 and the outer pipe 37, but may be a simple pipe extending from the vicinity of the bottom plate 11 of the cultivation floor 10 to the outside of the cultivation floor 10. It may be a flexible tube or the like.

[0044]

The plant cultivating apparatus and the method for supplying and draining a cultivation floor according to the present invention are as described above, and therefore have the following effects.

(1) Since the plant cultivating apparatus and the water supply / drainage method for the cultivating floor in the present invention are constructed so that the nutrient solution supplied to the cultivating floor is naturally discharged by the siphon pipe, the manual valve is operated. It has an excellent effect that it is not bothersome and does not require a large number of solenoid valves.

(2) Further, the nutrient solution is supplied to each cultivation bed simultaneously and uniformly, whereby the siphon pipes arranged on each cultivation floor work simultaneously to discharge the nutrient solution. Since they are completed at the same time, the same moisture and nutrients are provided to the plants in each cultivation bed, which has the excellent effect that the whole plants can be evenly raised.

(3) Further, since the plant cultivation apparatus of the present invention is constructed as described above, even if a large number of cultivation beds are arranged, all plants can be uniformly provided with water and nutrients. At the same time, this can be performed in an extremely short time, and it has an excellent effect that it is particularly effective for large-scale cultivation.

[Brief description of drawings]

FIG. 1 is a perspective view showing a part of a plant cultivation apparatus according to the present invention.

FIG. 2 is a cross-sectional view showing the main part of the embodiment.

FIG. 3 is an enlarged cross-sectional view showing a main part of the same embodiment.

FIG. 4 is a plan view schematically showing the entire plant cultivation device according to the same embodiment.

FIG. 5 is a side view showing a conventional plant cultivation device.

[Explanation of symbols]

 p Nursery pot f Plant 10 Cultivation floor 11 Bottom 20 Supply means 30 Siphon tube

Claims (2)

[Claims] 1. A cultivating floor having an uneven bottom plate on which a nursery pot for planting is placed, a supply means for uniformly supplying water and a nutrient solution to a plurality of cultivating beds, and each cultivating floor is provided. A siphon tube for discharging the water or nutrient solution supplied to the cultivation bed,
A plant cultivating device characterized in that 2. A fixed amount of water or nutrient solution is simultaneously and uniformly supplied to a plurality of cultivation beds having an uneven bottom plate on which a seedling raising pot in which a plant is planted is placed to supply water and nutrients to the plant. Cultivation characterized by supplying water and nutrient solution to each cultivation bed again simultaneously and uniformly and discharging the water and nutrient solution supplied into the cultivation bed to the outside by the siphon principle. Floor water supply and drainage method.