JPH09262031A - Apparatus for controlling soil environment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To maintain a soil environment suitable for plants by permanently controlling the soil moisture in open culture or a turf playground. SOLUTION: This apparatus for controlling a soil environment is obtained by arranging an inorganic perforated pipe 5 in a part of a pipe 4 embedded in soil 3, connecting the pipe 4 through a pump device 9 to a water tank 7 and connecting the terminal end of the pipe 4 to the water tank 7. When the pump device 9 is operated to circulate water 8 through the interior of the pipe 4, the water 8 is leaked out of pores in the inorganic perforated pipe 5 and diffused into the soil 3. Thereby, water is fed to a root of a plant 2. When the terminal end of the pipe 4 is closed with an opening and closing valve 10 and the pump device 9 is reversibly rotated, the interior of the pipe 4 is kept in a negative pressure state. The moisture in the soil 3 can be sucked from the pores of the inorganic perforated pipe 5 and discharged.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is to provide an apparatus capable of automatically adjusting the water content in soil, which is one of the plant cultivation conditions, at a relatively low cost.

[0002]

2. Description of the Related Art Conventionally, in a water supply device used as this type of device, water is mostly supplied directly to the leaf surface or the ground surface of a plant by a sprinkler or the like, and drainage is naturally discharged.

Some limited plants such as hydroponic culture constantly supply water to the roots, but plants planted in alley soil have no suitable device for controlling drainage.

For this reason, excess water causes insufficient rooting and causes root rot disease, and suffers from continuous crop failure, and there is a situation where many drugs must be used.

[0005]

As described in the prior art, it is difficult to control the water content of a large area of soil such as soil of alley-cultivated plants or lawn playground, and it depends on the weather of the year. .

[0006] In a drought state where it does not rain for a long period of time, it may not be possible to secure the water to be supplied, and the plants may die.

On the contrary, if the rain continues for a long period of time and the drainage is insufficient, the plant is liable to develop root rot or continuous crop failure. To prevent this, a large amount of chemicals was sprayed.

Further, when the drainage is insufficient or the surface of the ground is hardened, oxygen deficiency occurs near the roots of plants, which is one of the causes of root rot of plants.

The present invention has been made to solve the above-mentioned problems of the prior art, and its object is to permanently store soil water in a wide area such as in alley cultivation and lawn playgrounds. This is to control and provide an environment suitable for plants, to maintain the original vitality of plants, and to utilize them.

[0010]

In order to achieve the above object, the soil environment control apparatus according to the present invention has an inorganic porous pipe such as a ceramic disposed in a part of a pipe buried in the soil, which is externally mounted. It is connected to the water tank provided in.

A pump device is provided between the water tank and the pipe, and if necessary, an air feeding device is connected to the pipe.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments will be described with reference to the drawings. 1 is a plan view of the soil environment control device, FIG.
Shows a cross-sectional view, and FIG. 3 shows another cross-sectional view.

In these figures, the ground surface 1 has plants 2
Are planted. Soil 3 is topsoil layer 3A containing fertilizer components
Then, the part deeper from the ground surface 1 becomes the sand layer 3B,
The bottom is composed of a pebble layer 3C.

In the soil 3 constructed as described above, the pipe 4 is provided in the area of the sand layer 3B or the pebble layer 3C.
The inorganic porous pipe 5 made of ceramic is connected to a part of the pipe 4 by a pipe joint 6.

The inorganic porous tube 5 is made of a ceramic such as alumina, zirconia, cordierite or silica.

Further, the inorganic porous tube 5 is formed with an outer diameter of about several tens of millimeters, and a metal wire or a metal plate may be embedded to provide mechanical reinforcement.

One end of the pipe 4 is connected to the water tank 7, and the water 8 in the water tank 7 can be fed into the pipe 4 by the pump device 9. The other end B of the pipe 4 is connected to the water tank 7.

When the pump device 9 is reversed, the water 8 in the pipe 4 can be sucked into the water tank 7.

The opening / closing valve 10 is normally open, but is closed when the water 8 in the pipe 4 is sucked and discharged by the pump device 9.

The air feeding device 11 is connected to the pipe 4 by the pipe joint 6. When the air feeding device 11 is operated, the air 12 is fed into the pipe 4.

The pores of the above-mentioned inorganic porous tube 5 are made into such a fineness that the roots of plants cannot penetrate, but they are made so that moisture and air can sufficiently pass therethrough.

The soil environment control apparatus of the present invention is constructed as described above and operates with the following functions.

When the pump 8 is operated to feed the water 8 in the water tank 7 into the pipe 4, if the pipe 4 is filled with the water 8, the water from the other end a of the pipe 4 is discharged. 8 returns to the aquarium 7.

If this state is continued, part of the water 8 leaks from the pores of the inorganic porous tube 5 and diffuses into the soil 3.

The moisture diffused in the soil 3 is the sand layer 3B.
And the capillarity of the topsoil layer 3A to reach the root of the plant 2 to supply necessary water.

By setting the operating time of the pump device 9 and the water supply pressure, it becomes possible to supply water suitable for the plant 2. It is also possible to operate automatically while measuring the water content of the soil 3.

Since water can be directly supplied to the roots of the plants 2, the amount of water to be irrigated is much smaller than that when water is applied to the ground surface 1, so that the amount of water evaporated from the ground surface 1 is much smaller.

The open / close valve 10 is operated when the water content of the soil 3 becomes excessive, as in the case of heavy rainfall.
When the pump device 9 is closed and the pump device 9 is reversed, the water 8 in the pipe 4 is returned to the water tank 7, the inside of the pipe 4 becomes a negative pressure, absorbs moisture from the outer surface of the inorganic porous pipe 5, and Water comes into the pipe 4.

By continuing the reverse operation of the pump device 9 as described above, the excess water in the soil 3 can be forcibly discharged.

When there is an appropriate amount of rainfall, if the open / close valve 10 is opened, the water 8 in the pipe 4 is naturally discharged, the inside of the pipe 4 becomes a negative pressure, and the inorganic perforated pipe is gently removed. The moisture of the soil 3 is absorbed from the outer surface of the pipe 5, and the water is drawn into the pipe 4, so that the natural moisture can be gradually discharged.

When the on-off valve 10 is closed and the air feed device 11 is operated to feed the air 12 into the pipe 4 instead of the pump device 9, the air 12 leaks from the pores of the inorganic porous tube 5. It comes out and diffuses in the soil 3.

The soil environment control device of the present invention performs the water control function by the above-mentioned action. However, even when it is used for a long period of time, the pores of the inorganic porous tube 5 are irrigated and discharged. Since the water flow reverses, it works to prevent pores from clogging and losing function.
Its performance can be maintained for a long time.

Since the pores of the inorganic porous tube 5 are so small that the roots of the plant 2 cannot penetrate, there is no possibility that the roots of the plant 2 will block the pores.

[0034]

Since the present invention has the above-mentioned structure and function, it has the following effects.

Since the water can be supplied to the soil by the inorganic porous tube according to the first and third aspects, the amount of water required for the plant is much smaller than the method of irrigating from the ground surface.

Since the water can be supplied to the soil by the inorganic porous tube according to the first and third aspects, the plant has roots deep in the ground and becomes a strong plant resistant to dryness.

Since the water can be supplied to the soil by the inorganic porous tube according to the first and third aspects, the plant has roots deeply in the ground, and the absorption of the trace elements necessary for the growth of the plant is improved, which is durable. Grows into a nice plant.

Since air can be supplied to the soil by the inorganic porous tube according to the fourth aspect, the roots of the plant directly absorb oxygen in the air and activate it to grow into a durable plant.

Since the water content in the soil can be discharged by the inorganic porous tube according to the second aspect and the third aspect, the root rot disease generated when the water content becomes excessive is less likely to be involved and the continuous cropping failure can be overcome. Grows into a durable plant.

If the plant becomes strong, the amount of pest control chemicals can be reduced, which can contribute to environmental improvement.

Since water in the soil can be discharged by the inorganic perforated pipes according to claim 2 and claim 3, a lawn playground should be a playground that is good for draining water during or shortly after rain. be able to.

[Brief description of drawings]

FIG. 1 is a plan view of a soil environment control device.

FIG. 2 is a cross-sectional view of a soil environment control device.

FIG. 3 is another cross-sectional view of the soil environment control device.

[Explanation of symbols]

 1 Ground surface 2 Plant 3 Soil 3A Surface soil layer 3B Sand layer 3C Pebble layer 4 Piping 5 Inorganic porous pipe 6 Pipe joint 7 Water tank 8 Water 9 Pump device 10 Open / close valve 11 Air feeding device 12 Air

Claims (5)

[Claims] 1. An inorganic porous pipe (5) is arranged in a part of a pipe (4) buried in soil (3), and water (8) is placed inside the inorganic porous pipe (5) by a pump device (9). To supply water to diffuse water from the outer surface of the inorganic porous tube (5) into the soil (3). 2. An inorganic porous pipe (5) is arranged in a part of a pipe (4) buried in the soil (3), and a pump device (9) is used to cover the soil (3) from the outer surface of the inorganic porous pipe (5). ). The soil environment control device, characterized in that it absorbs the water of (1) and is discharged to the outside through the pipe (4). 3. An inorganic porous pipe (5) is arranged in a part of a pipe (4) buried in the soil (3), and when the water content of the soil (3) is insufficient by the pump device (9), Water (8) is supplied to the inside of the inorganic porous tube (5) to diffuse water from the outer surface of the inorganic porous tube (5) into the soil (3), and when the water in the soil (3) is excessive, A soil environment control device, characterized in that water is absorbed from the outer surface of the inorganic porous tube (5) and is discharged to the outside through the piping (4). 4. An inorganic perforated pipe (5) is arranged in a part of a pipe (4) buried in soil (3), and an air feeding device (11) is provided.
The air (12) is supplied to the inside of the inorganic porous tube (5) to diffuse the air (12) from the outer surface of the inorganic porous tube (5) into the soil (3). Soil environment control device. 5. An inorganic porous pipe (5) is arranged in a part of a pipe (4) embedded in the soil (3), and the moisture of the soil (3) is absorbed from the outer surface of the inorganic porous pipe (5). A soil environment control device characterized by being naturally discharged to the outside through the pipe (4).