JP2001224250A - Structural body for producing high-quality crop and method for ventilating soil - Google Patents

Abstract

PROBLEM TO BE SOLVED: To evenly and sufficiently ventilate the ground where plants may be planted by a simple construction, improve quality such as the sugar content and the coloring of a fruit of a fruit tree, or the like, and increase the crop yield. SOLUTION: Furrows 1 parallel to each other are dug along the arranged direction of the plants 9 at both sides of the plants 9 planted in a regular arrangement, and perforated pipes 6 are stored in the furrows 1. Air-permeable sheets are covered on the perforated pipes 6, and the soil is buried again to provide surface soil layers 4. The open end 7 at one edge part 6a of each of the perforated pipes 6 is protruded into the atmosphere, and exhausting pipes 8 for exhausting the air in the perforated pipes 6 are protruded into the atmosphere to provide the objective structural body for producing high-quality crops. The outside air is inhaled from the open ends 7 into the perforated pipes 6, passed through the perforated pipes 6 and exhausted from the exhausting pipes 8. Outer air flowed in the perforated pipes 6 is supplied from the perforated pipes 6 through air-permeable sheets 3 to the surface soil layers 4 until the outer air is exhausted from the exhausting pipes 8 to send fresh air to the rootlets of the fruit tree 9.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for producing high-quality crops and a soil aeration method, and more particularly to a structure and soil for producing high-quality crops capable of improving the quality of fruits such as tangerines such as sugar content and coloring. It relates to the ventilation method.

[0002]

2. Description of the Related Art Conventionally, there has been known a technique for improving the growth of turf by aerating into the soil to activate the activity of soil microorganisms and to promote the respiration of turf roots (Japanese Patent Application Laid-Open No. Sho. 48-13126).

[0003] The ventilation method is as follows.

[0004] First, a net-shaped or porous drainage pipe is installed in a concave portion formed on the surface of the subsoil, and then a crushed stone is spread over the surface of the subsoil to form a crushed stone layer. A net is laid on the surface, and finally soil is laminated on the net to form a topsoil layer.

[0005] According to this ventilation method, the air in the drain pipe is ventilated through the opening of the ventilation pipe, the topsoil layer is ventilated through the crushed stone layer, and excess water is collected in the drain pipe through the crushed stone layer. The water is discharged from the drain of the drainpipe.

However, since the above-mentioned ventilation method is a technique for improving the growth of the lawn in the first place, if the ventilation method is applied to fruit trees and vegetables as it is, ventilation near the opening of the ventilation pipe can be performed. There is a problem that it is not possible to ventilate the whole evenly.

Further, there is a problem that the ventilation in the soil is insufficient and the quality of fruits such as fruit trees such as sugar content and coloring cannot be sufficiently improved.

In order to solve these problems, the present inventor has devised the following structure for producing high-quality crops. This structure for producing high-quality crops has a groove formed by digging crushed stones, shells and the like in at least one side of the plants planted in a regular arrangement, and a groove dug along the direction of plant arrangement. Layer, a topsoil layer formed by laminating soil to the ventilation layer, a ventilation pipe having air permeability buried in the ventilation layer, a suction portion for sucking outside air into the ventilation pipe, and air in the ventilation pipe to the atmosphere. And a discharge unit for discharging to the discharge port.

[0009] Outside air is drawn into the ventilation pipe from the suction section, passes through the ventilation pipe, and is discharged from the discharge section. The outside air that has flowed into the ventilation pipe is supplied from the ventilation pipe to the ventilation layer and from the ventilation layer to the topsoil layer before being discharged from the discharge portion, and fresh air is sent to the fine roots of the plant. Aeration into the soil around the fine roots of the plant, when air is supplied to the fine roots, the fine roots are activated, the growth of the fine roots is increased, the amount of fine roots is increased, and the plant is subjected to mild water stress. become. as a result,
The quality such as sugar content and coloring of plant fruits is improved.

[0010]

However, in this structure for producing high quality crops, as described above, crushed stones are arranged around the ventilation pipe to form a ventilation layer, and soil is laminated on the ventilation layer. It has been found that since the topsoil layer has to be formed, the operation is complicated and the cost increases.

In addition, an appropriate size (for example, a particle size of 1 to 40)
mm), it is not easy to obtain crushed stones and shells, and it is very difficult to obtain in some areas. This has also been one of the obstacles in producing the above-mentioned structure for producing high-quality crops.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object thereof is to make it possible to uniformly and sufficiently ventilate a land where a plant is to be planted by a simple construction, and to achieve a sugar content of fruits such as fruit trees. In other words, it is to improve the quality of coloring, etc., and to increase the yield.

[0013]

According to the present invention, there is provided a structure for producing a high-quality crop according to the first aspect of the present invention, wherein at least one side of a plant to be planted in a regular arrangement is arranged in the direction of the plant arrangement. A groove dug along, a gas-permeable ventilation pipe accommodated in the groove, a gas-permeable ventilation sheet covering at least an upper surface portion of the gas ventilation pipe, and accommodating the gas ventilation pipe in the groove, After covering the ventilation pipe with the ventilation sheet, a topsoil layer formed by backfilling the soil with the groove, a suction unit for sucking air into the ventilation pipe, and discharging air in the ventilation pipe to the atmosphere. And a discharge section that performs the discharge.

The outside air is sucked into the ventilation pipe from the suction part, passes through the ventilation pipe, and is discharged from the discharge part. The outside air that has flowed into the ventilation pipe is supplied from the ventilation pipe to the topsoil layer through the ventilation sheet before being discharged from the discharge portion, and fresh air is sent to the fine roots of the plant. Aeration into the soil around the fine roots of the plant, when air is supplied to the fine roots, the fine roots are activated, the growth of the fine roots is increased, the amount of fine roots is increased, and the plant is subjected to mild water stress. become.

In addition, instead of forming a ventilation layer by arranging crushed stones around the ventilation pipe, a ventilation sheet is placed on the ventilation pipe, so that the operation of producing a structure for producing high-quality crops is greatly simplified. Is done.

The structure for producing a high-quality crop according to the second aspect of the present invention is the structure for producing a high-quality crop of the first aspect, wherein the suction portion is one open end of the vent pipe.
The open end protrudes into the atmosphere.

Since one open end of the ventilation pipe projects into the atmosphere, the amount of outside air sucked into the ventilation pipe increases.

The structure for producing a high-quality crop according to the third aspect of the present invention is the structure for producing a high-quality crop of the first aspect of the present invention, wherein the suction section is a suction pipe communicating with the ventilation pipe. The open end protrudes into the atmosphere.

Since the open end of the suction pipe projects into the atmosphere, the amount of outside air sucked into the ventilation pipe increases.

According to a fourth aspect of the present invention, there is provided the structure for producing a high quality crop according to any one of the first to third aspects, wherein the discharge portion communicates with the ventilation pipe. A discharge pipe, wherein the discharge pipe protrudes into the atmosphere from the topsoil layer, and an open end of the discharge pipe is located at a position higher than a top of the plant.

The amount of air discharged from the ventilation pipe is increased, and ventilation in the soil is promoted.

According to a fifth aspect of the present invention, there is provided the structure for producing a high-quality crop according to the fourth aspect of the present invention, wherein the air in the ventilation pipe is introduced into the atmosphere at the open end of the discharge pipe. A ventilator for discharging is mounted.

The amount of air discharged from the ventilation pipe is greatly increased, and ventilation in the soil is further promoted.

According to a sixth aspect of the present invention, there is provided the structure for producing a high quality crop according to any one of the first to fifth aspects, wherein the ventilation pipe is inclined with respect to a horizontal plane. It is characterized by having.

Water that has entered the ventilation pipe from the topsoil layer through the ventilation layer is discharged from one of the ventilation pipes, and the ventilation pipe exhibits a drainage function.

According to a seventh aspect of the present invention, there is provided the structure for producing a high-quality crop according to any one of the first to sixth aspects, wherein the inner diameter of the ventilation pipe is about 50 to 1 mm.
It is characterized by being 50 mm.

When the inner diameter of the ventilation pipe is 50 mm or less, the frictional resistance of the air in the ventilation pipe becomes large and the air permeability deteriorates. Further, the surface area of the ventilation pipe becomes small, and the amount of carbon dioxide discharged from the soil and the supply of oxygen are reduced. The amount is reduced. In contrast,
If the inner diameter of the ventilation pipe is 150 mm or more, excessive ventilation will occur, resulting in insufficient moisture in the soil.

[0028] The soil aeration method of the invention according to claim 8 includes a first step of digging a groove along at least one side of the plants to be planted in a regular arrangement along the arrangement direction of the plants, and a vent pipe having air permeability. A second step of accommodating in the groove, a third step of covering the ventilation tube with the ventilation sheet, and the second and third steps.
After the step, a fourth step of backfilling the soil with the soil to form a topsoil layer, a fifth step of projecting a suction portion for sucking outside air into the ventilation pipe into the atmosphere, and discharging the air in the ventilation pipe And a sixth step of projecting the portion into the atmosphere.

By using this method, a structure for producing high quality crops is formed. Outside air is sucked into the ventilation pipe from the suction part, passes through the ventilation pipe, and is discharged from the discharge part. The outside air that has flowed into the ventilation pipe is supplied from the ventilation pipe to the topsoil layer through the ventilation sheet before being discharged from the discharge portion, and fresh air is sent to the fine roots of the plant. When air is supplied to the fine roots and aerated into the soil around the fine roots of the plant, the fine roots are activated, the growth of the fine roots is promoted, and the amount of the fine roots increases.

In addition, instead of forming a ventilation layer by arranging crushed stones around the ventilation pipe, a ventilation sheet is placed on the ventilation pipe, which greatly simplifies the operation of producing a structure for producing high-quality crops. Is done.

According to a ninth aspect of the present invention, there is provided a structure for producing a high-quality crop, comprising: a groove dug in the ground where a plant is to be planted; a gas-permeable ventilation pipe accommodated in the groove; A ventilation sheet having air permeability, covering the ventilation pipe in the groove, covering the ventilation sheet with the ventilation sheet, and then forming a topsoil layer by backfilling soil in the groove; It is characterized by comprising a suction part for sucking air into the ventilation pipe, and a discharge part for discharging air from the ventilation pipe to the atmosphere.

The outside air is sucked into the ventilation pipe from the suction part, passes through the ventilation pipe, and is discharged from the discharge part. The outside air that has flowed into the ventilation pipe is supplied from the ventilation pipe to the topsoil layer through the ventilation sheet before being discharged from the discharge portion, and fresh air is sent to the fine roots of the plant. Aeration into the soil around the fine roots of the plant, when air is supplied to the fine roots, the fine roots are activated, the growth of the fine roots is increased, the amount of fine roots is increased, and the plant is subjected to mild water stress. become.

In addition, instead of arranging crushed stones around the ventilation pipe to form a ventilation layer, the ventilation sheet is placed over the ventilation pipe, which greatly simplifies the operation of producing a structure for producing high-quality crops. Is done.

[0034]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a cross-sectional view of a structure for producing high-quality crops according to an embodiment of the present invention cut in parallel to the arrangement direction of fruit trees. FIG. FIG. 3 is a cross-sectional view cut at a right angle to the arrangement direction, FIG. 3 is an enlarged cross-sectional view of a part of the high-quality crop production structure of FIG. 2, and FIG.

The structure for producing high-quality crops comprises a groove 1,
Perforated pipe (ventilated pipe) 6 housed in groove 1
A ventilation sheet 3 covering the upper surface of the perforated tube 6;
The top soil layer 5 formed by backfilling the soil 4 in the groove 1 after containing the air, the open end (suction part) 7 for sucking outside air into the perforated pipe 6, and the air in the perforated pipe 6 And a discharge pipe (discharge unit) 8 for discharging to the atmosphere.

As shown in FIG. 4, the grooves 1 are dug on both sides of a fruit tree (plant) 9 planted in a regular arrangement in parallel along the arrangement direction A of the fruit trees 9. In the case of the fruit tree 9, the length B from the implantation position a to the center of the groove 1 is 50 to 150 cm. In the case of vegetables and the like not shown, the groove 1 is set from the implantation position a.
The length B up to the center is 10 to 50 cm. The width b of the groove 1 is 25 cm and the depth c is 45 cm (see FIG. 3).

The porous tube 6 has a number of small holes.
As the perforated pipe 6, a synthetic resin corrugated pipe having flexibility is suitable for construction, but a perforated straight pipe may be used. The material of the porous tube 6 is a thermoplastic resin such as polyethylene, polyvinyl chloride, or polypropylene, or a thermosetting resin. The ventilation pipe may be a mesh pipe other than the porous pipe 6.

It is desirable that the inner diameter g of the perforated tube 6 be 50 to 150 mm. When the inner diameter g of the perforated tube 6 becomes 50 mm or less, the air friction resistance in the perforated tube 6 increases, the air permeability deteriorates, and the surface area of the perforated tube 6 decreases. The supply is reduced. Conversely, if the inner diameter of the perforated tube 6 is 150 mm or more, excessive ventilation will occur, which will cause a shortage of water in the soil and increase the material cost. In this embodiment, the outer diameter of the porous tube 6 is 65 m.
m and the inner diameter g are 60 mm.

The tube axis of the perforated tube 6 is inclined with respect to the horizontal plane. That is, in this embodiment, in order to give the perforated tube 6 a drainage function in addition to the ventilation function, one end portion 6a of the perforated tube 6
Is lower than the other end 6b.

The ventilation sheet 3 includes, for example, a light shielding sheet and a net. As an example of the light shielding sheet, there is a light shielding sheet composed of a warp yarn having a width of about 2 mm and a weft yarn having a width of about 1 mm, with an interval between warp yarns of about 1 mm and an interval between weft yarns of about 10 mm. The warp and weft are each made of polyethylene and are black.

It is not always necessary to wind the ventilation sheet 3 around the entire circumference of the perforated tube 6, as long as at least the upper surface of the perforated tube 6 is covered by the ventilation sheet 3 as shown in FIG.

The discharge pipe 8 is connected to the other end 6b of the perforated pipe 6. Examples of the discharge pipe 8 include a synthetic resin pipe and a metal pipe. A synthetic resin pipe is desirable, and a vinyl chloride pipe is particularly suitable.

A ventilator 10 is mounted on the open end 8a of the discharge pipe 8. The ventilator 10 rotates by wind power, sucks air in the perforated tube 6 and discharges it to the atmosphere.
The ventilator 10 is higher than the top of the fruit tree 9 so that the branches, leaves and fruits of the fruit tree 9 do not block the wind toward the ventilator 10 (see FIG. 1).

The depth k from the surface of the topsoil layer 5 to the ventilation sheet 3 is 37.4 cm (see FIG. 3).

Next, the construction method (soil aeration method) of the structure for producing a high quality crop will be described.

FIGS. 5 to 8 are views for explaining a method of constructing the high-quality crop production structure of FIG.

First, as shown in FIG. 4 and FIG. 5, grooves 1 parallel to each other are dug along both sides of the fruit trees 9 to be planted in a regular arrangement along the arrangement direction of the fruit trees 9 (first step). The width b and depth c of the groove 1 are as described above.

The depth of one end of the groove 1 is made larger than the depth of the other end, and the pipe axis of the perforated pipe 6 to be laid later is inclined with respect to the horizontal plane so that the perforated pipe 6 has a drainage function. Is also good.

Next, as shown in FIG.
(The second step). In an actual operation, a plurality of perforated tubes 6 may be connected to form one perforated tube 6, or a long tube may be used.

Thereafter, a discharge pipe 8 for discharging the air in the porous tube 6 is connected to the other end 6b of the porous tube 6. Discharge pipe 8
The ventilator 10 is attached to the open end 8a of the.

As the discharge pipe 8, when the discharge pipe 8 is started, the ventilator 10 is formed by the branches, leaves and fruits of the fruit tree 9.
Use a non-perforated pipe with a length higher than the top of the fruit tree 9 so that the wind to the wind is not blocked.

Next, as shown in FIG. 7, the ventilation sheet 3 is put on the upper surface of the porous tube 6 (third step). At this time, the length j (see FIG. 3) from the ventilation sheet 3 to the bottom of the groove 1 is 6
7 mm.

Finally, as shown in FIG. 8, the soil 4 is backfilled on the ventilation layer 3 to form the topsoil layer 5 (fourth step).
At this time, the open end 7 of the one end 6a of the porous tube 6 is protruded into the groove 50 and is exposed to the atmosphere (fifth step). Further, the discharge pipe 8 is set up vertically and put out into the atmosphere (sixth step).
At this time, the discharge pipe 8 may be supported using a splint.

Thus, a structure for producing a high-quality crop is completed.

The outside air is sucked into the perforated pipe 6 from the open end 7 and discharged from the discharge pipe 8. The outside air that has flowed into the perforated pipe 6 is supplied through the small holes of the perforated pipe 6 to the ventilation sheet 3 and the ventilation sheet 3 to the topsoil layer 5 before being discharged from the ventilator 10 of the discharge pipe 8. Fresh air is sent to the fine roots. In this embodiment, the open end 8 of the discharge pipe 8
Since the ventilator 10 is mounted on the a, and the ventilator 10 is located higher than the top of the fruit tree 9,
The wind is not obstructed by the branches, leaves and fruits, and the rotation of the ventilator 10 is ensured, and natural ventilation is performed reliably and sufficiently.

When air is supplied into the soil around the fine roots of the fruit tree 9 and air is supplied to the fine roots, the fine roots are activated, the growth of the fine roots is promoted, the amount of the fine roots is increased, and the resistance to pests and insects is increased. Becomes larger.

FIG. 11 is a graph showing the amount of oxygen consumption indicating the activity of fine roots (the amount of oxygen consumed per gram of dry matter of fine roots in 5 hours).

In the case where ventilation in the soil is performed using the high-quality crop production structure or the soil aeration method according to this embodiment, and a case where a perforated pipe 6 having a diameter of 100 mm is used, C and a diameter of 65 mm are used. As shown in FIG. 11, the oxygen consumption of each of the cases D when the perforated pipe 6 was used was the case where ventilation in the soil was not performed, and Oxygen consumption was significantly higher than that of

Since the pipe axis of the perforated pipe 6 is inclined with respect to the horizontal plane, water that has entered the perforated pipe 6 from the topsoil layer 5 through the ventilation sheet 3 is discharged from one end 6 a of the perforated pipe 6. Can be.

According to the structure for producing a high quality crop of this embodiment, ventilation in the soil around the fine roots of the fruit tree 9 is promoted, so that the growth of the fine roots increases, the amount of the fine roots increases, and the fruit As the amount increases, a slight water stress is applied to the fruit tree 9, so that the quality of the fruit such as sugar content and color is improved.

For example, as shown in FIG. 12, the sugar content of oranges is significantly higher than when no ventilation is performed in the soil. According to the sugar content test (measured by a refractometer),
When the straw is laid, the sugar content of the fruit of A is 10.40 Brix
%, Whereas in bare land the fruit of B had a sugar content of 1
0.25 Brix%, and when the ventilation in the soil is performed using a ventilator, the sugar content of the C and D fruits is 1 respectively.
1.50 Brix%. Here, Brix% indicates the percent concentration of soluble solids (such as sugar) contained in the sample.

As shown in FIG. 13, the content of citric acid, which determines the sourness of tangerines, was reduced as compared with the case where ventilation in the soil was not performed. According to the citric acid content test (spot titration method), when the straw is laid, the fruit of A has a citric acid content of 1.0%, and when bare, the ventilation in the soil is performed using B and a ventilator. When the citric acid content of the fruit with C was 0.8% when performed, the citric acid content of the fruit of D was 0.7% when the ventilation in the soil was performed using a ventilator. there were.

Further, the numerical value indicating the degree of coloring of oranges is
As shown in FIG. 14, the value was higher than when ventilation in the soil was not performed. According to the coloring test (coloring standard method of the Federation of Kumamoto Fruit Agriculture Cooperative Association), the value of A was 9.0 when the straw was laid and B was 9.0 in the case of bare ground. When the inside was ventilated, the numerical value of the fruit of C was 9.6, and when ventilated in the soil using a ventilator, the numerical value of the fruit of D was 9.8.

According to this embodiment, instead of forming crushed stones or shells around the ventilation pipe 6 to form a ventilation layer,
Since the ventilation sheet 3 is placed over the ventilation pipe 6, the operation for producing a structure for producing high-quality crops is greatly simplified, and the cost can be reduced.

FIGS. 9 and 10 show a structure for producing high-quality crops according to another embodiment of the present invention, and are sectional views cut in parallel to the arrangement direction of fruit trees. Portions common to the above-described embodiments are denoted by the same reference numerals, and description thereof is omitted.

In the above-described embodiment, the open end 7 of the porous tube 6 is exposed to the atmosphere when the soil 4 is backfilled to form the topsoil layer 5, and outside air is sucked from the open end 7. In the embodiment of FIG. 9, a suction pipe (suction unit) 28 is connected to one end 6a of the perforated pipe 6, and the suction pipe 28 is vertically raised so as to protrude into the atmosphere. In the embodiment shown in FIG. 10, a suction pipe 28 is connected to one end 6a of the perforated pipe 6, the suction pipe 28 is vertically raised so as to protrude into the atmosphere, and a discharge pipe 18 is connected in the middle of the perforated pipe 6. Then, a ventilator 20 was attached to the open end 18a of the discharge pipe 18, and the discharge pipe 18 was vertically raised so as to protrude into the atmosphere.

According to the embodiment shown in FIG. 9, the same effects as those of the above-described embodiment can be obtained.

According to the embodiment shown in FIG. 10, when the perforated tube 6 is long, it is possible to prevent the ability to discharge air from the perforated tube 6 from being reduced.

In each of the above-described embodiments, the case where the grooves 1 are dug along the arrangement direction of the fruit trees 9 on both sides of the fruit trees 9 planted in a regular arrangement has been described. Groove 1 may be dug along only one side of fruit tree 9 planted in a regular arrangement along the arrangement direction of fruit tree 9,
A trench may be dug around the fruit tree 9.

Further, as shown in FIG.
It may be dug almost directly under such plants.

FIG. 15 is a sectional view showing a structure for producing high-quality crops according to another embodiment of the present invention. Portions common to the above-described embodiments are denoted by the same reference numerals, and description thereof is omitted.

In this embodiment, the ventilation pipe 6 is located almost directly below the fruit tree 9. The outside air flowing into the ventilation pipe 6 is supplied from the ventilation pipe 6 to the ventilation sheet 3 and the topsoil layer 5, and fresh air is sent to the fine roots of the plant. The roots of the fruit tree 9 propagate around the ventilation tube 6.

According to this embodiment, the same effects as those of the above-described embodiment can be obtained.

In each of the above embodiments, the case where the present invention is applied to the fruit tree 9 has been described. However, the present invention can be applied to plants such as vegetables and ornamental plants.

In each of the above embodiments, a case is described in which a ventilator that operates using wind power as a driving source is used. However, as a modified example, a ventilator that operates using a motor or the like as a driving source may be used. . This modification is effective when the present invention is implemented in a house.

[0077]

As described above, according to the structure for producing a high-quality crop of the first or ninth aspect of the present invention, the quality of a plant fruit such as sugar content and coloring or the quality of the plant itself is improved, And the yield of high quality crops increases.

Further, instead of forming a ventilation layer by arranging crushed stones around the ventilation pipe, the ventilation sheet is placed on the ventilation pipe, so that the construction work of the structure for producing high quality crops is simplified, Construction costs can be reduced.

According to the structure for producing a high quality crop of the second aspect of the present invention, since the open end of one end of the ventilation pipe projects into the atmosphere, the amount of outside air sucked into the ventilation pipe increases, and the fine roots A lot of air can be supplied.

According to the structure for producing high-quality crops according to the third aspect of the present invention, the amount of outside air sucked into the ventilation pipe is increased, and more air can be supplied to the fine roots.

According to the structure for producing a high quality crop of the fourth aspect of the present invention, the amount of air discharged from the ventilation pipe is increased, and ventilation in the soil is further promoted.

According to the structure for producing a high-quality crop of the fifth aspect of the present invention, the amount of air discharged from the ventilation pipe is greatly increased, ventilation in the soil is further promoted, and the sugar content and coloring of plant fruits and the like are improved. Etc. quality is further improved.

According to the structure for producing a high quality crop of the sixth aspect of the present invention, since the ventilation pipe is inclined with respect to the horizontal plane,
Water that has entered the ventilation pipe from the topsoil layer through the ventilation layer can be discharged from one end of the ventilation pipe, and the ventilation pipe exhibits a drainage function.

According to the structure for producing high-quality crops of the invention of claim 7, it is possible to prevent the amount of carbon dioxide discharged from the soil and the amount of oxygen supplied from being reduced, and the amount of aeration becomes excessive. Since the lack of moisture in the inside can be prevented, appropriate ventilation can be realized, and the quality of the fruit of the plant can be surely improved.

According to the soil aeration method of the invention of claim 8,
The fine roots are activated by the aeration in the soil, the growth of the fine roots is promoted and the amount of the fine roots is increased, and the plant is given a slight water stress, so that the sugar content of the fruit of the plant,
The quality such as coloring and the quality of the plant itself are improved, and the resistance to pests is increased, and the yield of high quality crops is increased.

In addition, instead of forming a ventilation layer by arranging crushed stones around the ventilation pipe, the ventilation sheet is placed on the ventilation pipe, so that the construction work of the structure for producing high-quality crops is simplified, Construction costs can be reduced.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a structure for producing a high-quality crop according to an embodiment of the present invention, which is cut in parallel to a direction in which fruit trees are arranged.

FIG. 2 is a cross-sectional view of the structure for producing high-quality crops of FIG. 1 cut at a right angle to the arrangement direction of fruit trees.

FIG. 3 is an enlarged sectional view of a part of the high-quality crop production structure of FIG. 2;

FIG. 4 is a diagram showing the relationship between the arrangement of fruit trees and grooves.

FIG. 5 is a diagram for explaining a method of constructing the high-quality crop production structure of FIG. 1;

FIG. 6 is a view for explaining a method of constructing the high-quality crop production structure of FIG. 1;

FIG. 7 is a diagram for explaining a method of constructing the high-quality crop production structure of FIG. 1;

FIG. 8 is a diagram for explaining a method of constructing the high-quality crop production structure of FIG. 1;

FIG. 9 is a cross-sectional view showing a structure for producing high-quality crops according to another embodiment of the present invention, which is cut in parallel to the arrangement direction of fruit trees.

FIG. 10 is a cross-sectional view showing a structure for producing a high-quality crop according to another embodiment of the present invention, which is cut in parallel to a direction in which fruit trees are arranged.

FIG. 11 is a graph showing oxygen consumption of fine roots.

FIG. 12 is a graph showing the sugar content of fruits.

FIG. 13 is a graph showing the citric acid content of fruits.

FIG. 14 is a graph showing the coloring of fruits.

FIG. 15 is a sectional view showing a structure for producing a high-quality crop according to another embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 1 groove 3 ventilation sheet 4 soil 5 topsoil layer 6 perforated pipe 7 open end of perforated pipe 8 discharge pipe 8a, 18 open end of discharge pipe 9 fruit tree 10 ventilator 28 suction pipe

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Hiroshi Aikawa 2566 Toyofuku, Matsubashi-cho, Shimomashiro-gun, Kumamoto F-term (reference) 2B034 AA01 BA10 BB03 CA10 CB20

Claims (9)

[Claims] At least one side of a plant to be planted in a regular arrangement, a groove dug along a direction in which the plants are arranged, a gas-permeable ventilation pipe accommodated in the groove, and at least the ventilation pipe. A ventilating sheet covering the upper surface of the airbag, and a topsoil layer formed by housing the ventilating pipe in the groove, covering the ventilating sheet with the ventilating sheet, and then backfilling the groove with soil. A structure for producing high-quality crops, comprising: a suction unit that sucks air into the ventilation pipe; and a discharge unit that discharges air from the ventilation pipe to the atmosphere. 2. The structure for producing a high-quality crop according to claim 1, wherein the suction portion is one open end of the ventilation pipe, and the open end protrudes into the atmosphere. 3. The structure for producing high-quality crops according to claim 1, wherein said suction section is a suction pipe communicating with said ventilation pipe, and an open end of said suction pipe protrudes into the atmosphere. body. 4. The discharge pipe communicates with the vent pipe, the discharge pipe protruding from the topsoil layer to the atmosphere, and the open end of the discharge pipe is located at a position higher than the top of the plant. The structure for producing a high-quality crop according to any one of claims 1 to 3, characterized in that: 5. The structure for producing high-quality crops according to claim 4, wherein a ventilator for discharging air in the ventilation pipe to the atmosphere is mounted at an open end of the discharge pipe. 6. The structure for producing a high-quality crop according to claim 1, wherein the ventilation pipe is inclined with respect to a horizontal plane. 7. The vent pipe has an inner diameter of about 50 to 150 mm.
The structure for producing a high-quality crop according to any one of claims 1 to 6, wherein 8. A method of digging a ditch on at least one side of a plant to be planted in a regular arrangement along a direction in which the plant is arranged.
A step of accommodating a ventilation tube having air permeability in the groove; a third step of covering the ventilation sheet with the ventilation sheet; and filling the groove with soil after the second and third steps. A fourth step of returning to form a topsoil layer, a fifth step of projecting a suction portion for sucking outside air into the ventilation pipe into the atmosphere, and a sixth step of projecting a discharge section discharging the air in the ventilation pipe into the atmosphere. And a soil ventilation method. 9. A groove dug in the ground where a plant is to be planted, a gas-permeable gas pipe accommodated in the groove, a gas-permeable gas sheet covering at least an upper surface of the gas pipe, A topsoil layer formed by receiving the ventilation pipe, covering the ventilation pipe with the ventilation sheet, and then burying the soil in the groove; a suction unit for sucking air into the ventilation pipe; And a discharge section for discharging the air to the atmosphere.