JP2010220485A - Plant cultivation apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a plant cultivation apparatus for solving the problems that in raising plants, plants are not raised healthily when not performing appropriate temperature control, and a cultivation price is high when performing temperature control with a large amount of energy. <P>SOLUTION: The cultivation apparatus includes directly cooling a cultivation medium with a simple device and less energy, using a present manufacturing method by ventilating a cultivation medium such as soil in cultivation with a pot or a pallet or ground cultivation, and healthily promoting plant cultivation, and performing production control without being influenced by the weather. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an apparatus for growing plants such as florets and vegetables, and more particularly to an apparatus for cooling to an appropriate temperature for growing plants.

  When cultivating flower buds and vegetables artificially, sunlight, water, air, carbon dioxide, fertilizer, etc. suitable for each plant are applied, and temperature and humidity are appropriately controlled. In particular, the temperature is controlled not only in the cultivation house, but also in the summer by cooling with a cooler in the summer and by circulating hot air in the winter. . In addition to the air conditioner, a heat pump or geothermal heat may be used as a cooling / heating method.

  Japanese Patent Application Laid-Open No. 10-215684 proposes a cultivation unit in which a cultivation container and an outer container that accommodates the cultivation container are combined to provide a space between the two containers and to maintain a sealed state. The configuration is similar to the cooling device of the present invention, but the purpose of passing air is to give the plant oxygen and moisture and to give the plant vitality. Therefore, the pipe of the air supply system is installed at a portion lower than the water supply water level, and the bubble generating device is arranged, so that excess air is discharged from the outer container. This is intended to give moisture to the soil by supplying oxygen and supplying moist air by supplying air, and does not include the idea of cooling the soil. If air is foamed in water, the air contains moisture, and the cooling effect by vaporizing moisture in the soil is reduced. In addition, if the outer container is provided with an exhaust port, a sufficient pressure difference cannot be generated between the bottom of the soil and the top surface of the soil, and sufficient ventilation cannot be performed to cool the soil. Thus, this patent publication does not include the technical idea of directly cooling the soil by ventilation. Patent Publication No. 2002-191243 has a passage switch connector that can be instantly attached / detached without leaking a flower pot and a water / water supply hose, and a double-structured space so that a heat insulation / cooling effect can be exhibited. A flowerpot with a cap-type insect repellent bottom net that can be attached and detached with a single touch has been proposed in addition to being able to adjust the amount of water supplied to the flowerpot through the water hose by a valve connected to the hose. Yes. It is a horticultural system characterized by combining multiple pumps with a temperature control device that feeds circulating water, including temperature, water supply, fertilizer, and simple attachment / detachment of flower pots. Japanese Patent Publication No. 2000-217449 includes a culture cell in which an artificial culture medium is packaged with a packaging sheet made of a material that allows smooth passage of moisture and air and maintains a certain form, and the culture medium cell is built in. An aerial plant pot with a water passage hole formed so that a sufficient amount of air and nutrient solution can be communicated with each other, and a plant cell installed in the aerial plant pot to cool and heat the root part of the plant. There has been proposed an apparatus comprising a cooling / heating air pipe to be supplied and a nutrient solution supply table that automatically circulates and supplies nutrient solution to a plant planted in a medium cell disposed higher than the water source. In any of these methods, a heating medium is circulated around a container such as a bowl to cool or warm. These methods are different from the method of the present invention although the thermal efficiency is improved as compared with the method of cooling and heating the whole house. The method of using the heat of evaporation of water is “Effects of medium temperature suppression after planting and fertilization time on continuous fertility in enhanced cultivation of forcing strawberries” (Konchu Shigaku Kenshin 735-47 (2007) In strawberry cultivation, temperature control is also important, and in order to suppress the temperature rise of the soil in summer, excess water from the non-woven fabric that forms the cultivation tank is used to remove excess water from the existing heater. Proposed a mechanism to forcibly vaporize by wind from a vinyl duct (diameter of about 10cm) with holes at 20cm intervals using the air blowing function to reduce the temperature of the nonwoven fabric surface and indirectly suppress the temperature rise of the medium In this method, the amount of heat that is vaporized on the surface of the medium container (nonwoven fabric) is used as cooling energy, but the air is cultivated by ventilating the cultivation medium to vaporize the moisture contained in the cultivation medium. Cool the medium directly The method of the present invention which is different from the.

JP-A-10-215684 Patent Publication 2002-191243 Patent Publication 2000-217449

Chinchu Four Agriculture Research Report 735-47 (2007)

  In the cultivation of florets and vegetables, the present invention is great for solving problems in which plants are damaged (wither) or become dormant when the temperature exceeds the appropriate temperature for cultivation, or is cooled to an appropriate temperature. It solves the problem of having to use energy. In other words, it is impossible to grow plants of appropriate quality due to inadequate temperature control, or to use large amounts of energy and large costs in order to perform appropriate temperature control. It is a solution.

  For example, in the production of cyclamen, phalaenopsis, and sympium, a single farmer produces a large amount of potted flowers. The apparatus of the present invention is compatible with these current production methods and reduces the cost and work of cooling. Cyclamen is cultivated by attaching a water absorption string to a plastic flower pot with a hole in the bottom, placing it on a fence called C-steel, hanging the absorption string on a pot filled with water, and supplying water to the bottom. To do. Fertilizers and pesticides may be added to the water in the jar. After seeding in containers such as trays in November or February and germination, the plants are transferred to pots from March to June, and are replanted into large pots as seedlings grow. At the stage where the pot is small, the pot may be placed on a flat nonwoven fabric and cultivated by supplying water from the nonwoven fabric or irrigating from the upper surface. In June or July, it is replanted into a pot of a size to be shipped, and bottom water supply cultivation is performed on C steel. Installation of pots on C steel adjusts the interval according to the growth of leaf stems. At the beginning of transplanting to a large pot, the leaves and stems are not very thick, so the pots are placed at a narrow interval, but the interval increases with growth. Therefore, it is necessary to make the ventilation member follow the change of the interval between the bowls. The optimum temperature for cyclamen is said to be 15-23 ° C. At 12 ° C. or lower or 25 ° C. or higher, it becomes a state where it cannot grow (dormant state), and when it is 7 ° C. or lower or 33 ° C. or higher, it becomes difficult to survive (wither). Cyclamen is cultivated in a relatively cold region, but in the summer, it becomes dormant under conditions of 25 ° C. or higher, and the growth stops and several months pass. When the temperature falls in autumn, it begins to grow again, but when the temperature falls below the optimum temperature, the house is warmed with warm air. If the apparatus of the present invention can reduce the temperature to 25 ° C. or lower in the summer, it can continue to grow in the summer. That is, a cyclamen that has grown further in the same period as before can be obtained (quality improvement). Cyclamen is a seasonal floret whose value is significantly reduced if it is not shipped in December, but the device of the present invention makes it possible to promote summer growth and eliminates concerns about delays in delivery due to the weather. Proper cooling at a low cost for cyclamen production contributes to increasing the added value of cyclamen, shortening the production period, ensuring shipment management, and reducing production costs.

  Phalaenopsis is cultivated by cutting out the nucleus from the parent seedling, growing the seedling in a beaker, transferring it to a plastic pot when the leaves grow into two pieces, and moving to a larger pot as it grows. This period of leaf growth is grown under conditions of high temperature and high humidity of 30 ° C. From the time when the leaves are fully grown, the flower buds are differentiated. During this period, the plant is grown at 12-18 ° C. for about 6 months, flowered, and shipped. The shipment time of phalaenopsis is year-round, so the temperature of the house needs to be adjusted as the temperature of the outside air changes. That is, during the leaf growth stage, the temperature exceeds 30 ° C., and during the flower bud differentiation and flowering period, it is necessary to cool the house during the daytime, even in the winter, and appropriate in other seasons. In order to control the temperature, a large cost is required especially for cooling.

  As described above, the production and cultivation of flower buds requires temperature control and supply of water, fertilizer, agricultural chemicals, etc. in accordance with the growth stage of many pots or pots. For this reason, many kinds of florets perform strict temperature control in the house. House temperature management requires enormous costs for heating and cooling, and is a heavy burden in the production of florets.

  In local cultivation, plants are no longer limited in season, and are not necessarily cultivated under optimum temperature conditions for plants. For example, strawberries shipped in the peak demand season in November and December need to grow seedlings in summer, the cultivation environment may not be optimal, and plants and cultivation media may need to be cooled. .

  In cultivation in pots and pallets or in land-cultivated cultivation, a proper amount of air is passed through a cultivation medium such as soil that contains moisture to evaporate the moisture in the cultivation medium and directly cool the cultivation medium with the heat of evaporation. Is possible. Plant growth is often affected by root temperature, and growth can be promoted by appropriately controlling the temperature of the cultivation medium. In order to perform an appropriate amount of ventilation, in the case of cultivation with pots and trays, it is made by aerating an appropriate amount of moisture from the bottom of the cultivation medium containing moisture. It can cool by inserting a hose, a pipe, etc. in the lower part and ventilating. Since ventilation reduces moisture, it is necessary to replenish moisture in an appropriate state.

When 1 gram of water evaporates, 538 calories are lost. Thereby, the cultivation medium is cooled. The temperature to be cooled varies depending on the filling state of the cultivation medium, the specific heat of the component, and the like. Since suitable cultivation media are used for each plant, aeration conditions and moisture conditions must be selected in accordance with the cooling characteristics of these cultivation media. In addition, for the cultivation of florets, in-house cultivation such as methods for supplying water, fertilizers and pesticides is carried out, and it is important to devise a ventilation method suitable for these. The table below shows the cooling effect of the cultivation medium when the aeration pressure (aeration rate) and ambient temperature are changed for the soil type. Depending on the type of soil, the amount of aeration relative to the aeration pressure varies. This is thought to be due to differences in soil filling and water retention. The cooling effect by aeration is recognized for any soil. Depending on the plant to be cultivated, the type of soil is selected and the appropriate management temperature is different. Temperature conditions suitable for plants can be adjusted by setting the ambient temperature, setting the ventilation rate, and the like.
* Peat Moss / Vermiculite / Perlite (70/15/15)
** 100% moss
*** Akadama Kodama / Nakadama (50/50)

  For example, cyclamen and poinsettia are so-called C steel cultivation in the house. In order to ventilate within the constraints of C-steel cultivation, in FIG. 1, a container 2 that can be fixedly installed on C-steel 1 and has a water-absorbing string at the bottom and a hole that allows ventilation. In addition, a tube 3 made of, for example, polyethylene film that covers the entire C steel and can be inserted into the container is installed, one end is closed, an air supply pipe 4 and a water supply pipe 5 are connected to the other end, and the container is hermetically sealed Ventilation is possible by inserting a pot 6 that can be in close contact, and water can be replenished in the same manner as in the conventional method. The cooling temperature can be adjusted by adjusting the air flow according to the size of the bowl.

  In the case of flower buds that do not use C steel, for example, Phalaenopsis orchids are cultivated by mounting pots on which seedlings are planted on trays and controlling temperature, moisture, etc. on a work table in the house. In this case as well, an appropriate amount of air can be ventilated by inserting the aeration pipe 8 into the container 7 that can be tightly adhered to the bowl and inserting the bowl 9 into the container.

  Aeration can be carried out without using a plastic film tube or a ventilation container. A hole can be made in the lower part or the bottom part of the side of the bowl and a hose can be passed through it, and the hose can be vented. The hole at the bottom of the bowl may or may not be open. If a saucer is installed at the bottom, water is added, and the depth is 10 mm or more, the air does not escape from the hole by adjusting the aeration pressure. The soil in the pot can be cooled by performing an appropriate amount of ventilation while the soil in the pot contains sufficient moisture.

  Temperature management is also necessary for soil cultivation, and cooling of the soil is effective for promoting plant growth. In geocultural cultivation, it is effective to use a material with adjusted ventilation resistance for proper ventilation. In FIG. 3, one end of the ceramic porous pipe 10 was closed with a rubber plug 11, and the other end was ventilated through a rubber plug and a vinyl pipe 12. The soil temperature of soil cultivation was originally small in temperature change with respect to temperature change, but it was still possible to confirm the cooling effect by ventilation.

  According to the present invention, it is possible to directly cool the cultivation medium with a small amount of energy with a simple device by utilizing the current production method and ventilating the cultivation medium such as soil, and the cultivation of plants. It is also possible to promote production management that is not affected by the weather, leading to cost reduction and rationalization of plant production, and greatly contributing to agriculture.

Cooling device in C steel cultivation Cooling device in pot cultivation Cooling device in soil cultivation Polyethylene film tube

  The conditions for growing plants vary depending on the plant type, growth stage, season, and the like. Although there are optimum conditions for each, the cooling effect of the cultivation medium is described.

In the case of C steel cultivation, a pot is attached to C steel and cultivated by bottom surface water supply. In order to ventilate in such a state, in FIG. 1, the container 2 into which the bowl 1 can be inserted in an airtight manner is covered with a film tube 3 such as polyethylene, and the film tube is ventilated. Although it is possible to cover the pot with a film tube, the work of handling the pot becomes complicated due to the care of the plant. So, in a container that tightly adheres to the bowl, the container with a hole through which the ventilation and the water absorption string are opened at the bottom is covered with a film tube together with C steel 4, and one end 5 of the tube is closed. A pipe 7 for aeration and a pipe 8 for water supply are attached. Pipes that supply water are closed when not supplying water. The container is fixed by the usual method of fixing a bowl to the C steel end. Insert the bowl into the container. The container and the pot are fixed so as to be kept airtight, but can be removed and fixed so as not to interfere with the care of the plant. In order to facilitate the handling of the container and the opening of the film and to keep the air tightness firmly, the end of the opening of the film is bent, and a plastic link, an O-ring or a rubber band that is in close contact with the container for ventilation is inserted therein. The folded end can be welded to the film. The soil for growing cyclamen is usually made by blending peat moss with vermiculite, perlite, and the like. The film tube is only ventilated with a warm air heater. Steel C was provided with 60 No. 5 plastic bowls (direct line 15 cm) at 15 cm intervals in a length of 20 meters. The pot was supplied with water until it was saturated by bottom water supply. In the house, it is not uncommon for the temperature to exceed 40 ° C in the summer, and usually the outside air is taken in to suppress the temperature rise. When the house temperature was 35 ° C., the soil temperature in the pot decreased to 21 ° C. when aerated from the film tube at a pressure of 30 mmH ₂ O. Similarly, when ventilated with 15 mmH ₂ O, the temperature was 24 ° C. Thus, a sufficient temperature lowering effect can be obtained with a slight wind pressure. Cyclamen is known to become dormant and stop growing if it exceeds 25 ° C in summer. Further, when the temperature exceeds 33 ° C., there is a possibility of failure (withering). Even in the summer, the cultivation medium is kept at 23 ° C. or less, and the growth progresses. In November and December, which are shipping times, the shipment of products whose growth is promoted more than the cultivation method is not carried out. Is possible. Also, due to the weather conditions, sufficient flowering cannot be obtained at the shipping time, and the problem of delay in shipping is eliminated. In cyclamen production, summer temperature adjustment affects product quality, and production management can be easily performed without failure in adjustment of shipping time.

In the cultivation of Phalaenopsis orchid, it is necessary to cool at 12 to 18 ° C. for 5 to 6 months to generate flower buds and to bloom. In summer, the inside of the house may exceed 40 ° C, but in winter it may exceed 30 ° C. Cooling the house to such a temperature results in a huge cooling cost. In FIG. 2, a cultivation pot 9 having an upper diameter of 10 cm, a lower diameter of 8 cm, and a height of 11 cm is inserted into a plastic container 11 having an upper diameter of 10 cm, a lower diameter of 8 cm, and a height of 10 cm, into which a ventilation hose 10 having a diameter of 1 cm is inserted. . Water moss was put in the cultivation pot and enough water was included. When the ambient temperature was 30 ° C. and the aeration pressure was 10 mmH ₂ O, the aeration rate was 8 liters / minute and the moss temperature was 17 ° C. When aeration was performed under the same conditions when the ambient temperature was 25 ° C., the moss temperature was 16 ° C. The germination differentiation temperature of phalaenopsis is 12 ° C. to 18 ° C. When the house temperature is higher than that, the temperature can be adjusted by adjusting the aeration pressure. Furthermore, when it cannot be adjusted to an appropriate temperature only by ventilation, such as in the summer daytime, it can be cooled to about 30 ° C. with an existing air conditioner and further adjusted to 18 ° C. or less by ventilation. As described above, after adjusting the temperature of the house under the condition that the cooling device is not used or the cooling temperature is increased, the temperature can be adjusted to a predetermined temperature by ventilation with a small cooling energy.

  When a plant is cultivated by ground cultivation, air can be supplied by burying a breathable pipe such as a porous ceramic in the soil. In FIG. 3, one end of a porous ceramic pipe 12 having a diameter of 30 mm, a thickness of 2 mm, and a length of 20 cm is closed with a rubber plug 13, and a ventilating plastic hose 14 having a diameter of 10 mm is inserted into the other end with a rubber plug. A hose 12 was connected and buried at a soil depth of 10 cm. The amount of aeration was adjusted to 10 liters / minute through a rubber hose. The ventilation is preferably evenly supplied from many supply ports, and it is preferable to use a porous ceramic pipe having a small opening diameter. The supplied air diffuses in various directions, and as the distance from the pipe increases, the air flow per unit cross section decreases. Therefore, the cooling of the soil is also reduced. When the soil in the vicinity of the pipe was measured, a temperature drop of about 10 ° C. was confirmed, and when the soil was in a high temperature state, it gave a good effect for growing plants. In order to grow a plurality of seedlings, a wide range of soil can be cooled by connecting porous pipes with a rubber hose or the like.

The seedlings grown in the No. 3 plastic pot were replanted in No. 5 plastic pot in June. It is a bowl of a size that No. 5 bowl can be shipped. The No. 5 plastic bowl has a water absorption string attached to the bottom, and supplies water by putting water into C steel (claw) and hanging the string on the water (C steel bottom water supply method cultivation). Already in June, the temperature in the house may exceed 30 ° C, exceeding the appropriate temperature range for growing cyclamen. Therefore, the apparatus of the present invention was attached. That is, in FIG. 4, a polyethylene film tube 15 (thickness: 50 microns) 15 having a two-ply 20 cm single side was welded and cut into a semicircle 16 having a radius of 11.5 cm at intervals of 15 cm. The part 17 between the semicircles was cut and opened. This portion is a container insertion portion. The tube processed in this way was inserted into C steel, one end was closed, an air insertion hose and a water supply hose were installed at the other end, and the tube was closed so that airtightness was maintained. The container had a shape substantially the same as that of a plastic No. 5 bowl, and a hole was formed in the bottom portion so that a water supply string could lead to C steel, and air was supplied from there. The container was inserted into the opening of the polyethylene film tube, and the film was pressed with a rubber band to keep it airtight. The container was fixedly installed on C steel in the same manner as the plastic bowl. A plurality of containers can be installed according to the length of the C steel. A plastic No. 5 bowl is inserted into the container. If there is a gap between the container and the bowl, insert an O-ring or the like to keep it airtight. In this manner, the pot can be attached with a polyethylene film tube while keeping the airtight. With such a method, the pot can be removed when taking care of the plant and can be easily attached. In this state, the duct of the warm air warmer was connected to the air supply hose, and the unheated wind was sent. The test piece of the present invention was prepared by adjusting the air volume and adjusting the internal pressure of the polyethylene film tube to 20 mmH ₂ O. For comparison, it was attached to C steel by a normal cultivation method without ventilation, and used as a comparative specimen. The test specimen of the present invention continued to grow in the summer, and the leaves were thick at the time of September, and a clear difference was recognized from the appearance of the comparative test specimen. A drought occurred in September, and it grew to a state where shipment was possible in October. On the other hand, the comparative test specimens became wrinkled in October and became ready for shipment in November. As of October, the number of leaves, the weight of leaves, and the number of wrinkles and flowers were 78, 290 g, and 48 for the test specimens of the present invention, respectively, whereas the comparative test specimens were also 53 It was 12 sheets, 232g, and 12. Thus, obviously, the growth of the test body of the present invention was faster than the comparative test body, and the quality of the completed flowers, leaves and stems was excellent.

  A phalaenopsis orchid with up to 6 leaves was used as a test specimen, with moss as a cultivation medium in a plastic pot having a diameter of 10 cm. The test body of the present invention was configured such that a rubber hose having a diameter of 1 cm was inserted into the bottom of a container that could be hermetically inserted into the pot and vented from the hole at the bottom of the pot. On the other hand, the comparative test body 1 was inserted into the same container but was not vented. The comparative test body 2 was installed in a room having the same configuration as the comparative test 1 and capable of adjusting the room temperature to 12 ° C. to 18 ° C. by air conditioning. The test started in April, and the room temperature (ambient temperature) may exceed 20 ° C. During that period, the test specimen of the present invention is ventilated so that the temperature of the moss is 12 ° C or higher and 18 ° C or lower. Moreover, the comparative test body 2 was controlled so that the room temperature was 12 ° C. or higher and 18 ° C. or lower. In the test sample 1 for comparison, although the temperature of the moss was lower than the room temperature, the temperature of the moss increased with the increase in the room temperature, and fluctuated between 15 ° C and 32 ° C. The test body of the present invention and the comparative test body 2 started to grow shoots in July and added buds and flowers in August. On the other hand, the buds did not occur in the comparative test specimen even in September. It was reconfirmed that it is necessary to cultivate phalaenopsis at a temperature of 18 ° C. or lower. The air pump for cooling the specimen of the present invention was 100 volts and 15 watts, whereas the air conditioner for controlling the temperature of the comparative specimen 2 was 100 volts and 1.5 kilowatts. Thus, in the method of cooling by ventilation, the portion to be cooled is the portion of moss, the volume is small, and the cooling energy is small because the moss is directly cooled.

  A porous ceramic pipe having a diameter of 30 mm, a length of 20 cm, and a wall thickness of 2 mm was buried horizontally at a depth of 10 cm in a portion of the soil in the house approximately 10 cm underground. One end of this pipe was closed with a rubber plug, and the other end was provided with a rubber plug with a hole, and a rubber hose having a diameter of 1 cm was inserted to obtain a test body of the present invention. On the other hand, those subjected to normal ground planting without performing these treatments were used as comparative specimens. These specimens were planted in August and the cultivation conditions were compared. The specimen of the present invention was aerated at 12 liters / minute from August to October, from 9:00 to 17:00, to cool the soil. The temperature in the house sometimes exceeded 35 ° C in the daytime, and the soil not subjected to cooling treatment often became 25 ° C to 28 ° C. Strawberries are said to have a rhizosphere temperature of 18 to 23 ° C. That is, the comparative specimen was often exposed to high temperatures exceeding this. On the other hand, the test body of the present invention was found to have a cooling effect in the region of 1 cm to 3 cm from the ground surface and could be suppressed to 23 ° C. or lower. As a result of these, the test specimens of the present invention grew steadily, had a pod in November, flowered at the beginning of December, and could be harvested from mid-December to the end. On the other hand, in the comparative test body, the seedlings grew in the same manner as the method of the present invention, but the generation time of wrinkles was delayed by about one week, and variations in wrinkle generation times (long-term output) occurred. There was a break in harvesting, and the yield was low. Strawberries are in great demand at Christmas and New Year, and it is desired that high-quality strawberries can be harvested by concentrating on this period, and the cooling effect according to the present invention can contribute to increasing the productivity of strawberries.

  Flowering cultivation of phalaenopsis is not only institutional cultivation but also at home as a hobby. So far, flower bud differentiation has been attempted and flowering has been attempted during the winter and spring seasons when the temperature drops below 18 ° C. By the method of the present invention, a vinyl hose for ventilation was installed at a position 2 cm from the bottom of the side of the bowl having a diameter of 10 cm and a height of 10 cm, and the bowl was cooled by ventilation. As the cultivation medium, moss was used, and the bowl was a solid porous bowl (unglazed pot). The bottom of the bowl may have a hole like a normal bowl, but a thing without a hole was used. A Phalaenopsis orchid with 6 leaves grown in April was used as a test specimen of the present invention, and similarly, a Phalaenopsis orchid that was not ventilated was used as a comparative test specimen. The test body of the present invention was aerated during a period in which the room temperature exceeded 18 ° C. and kept at 18 ° C. or lower. The comparative test body was observed to have a cooling effect of 3 ° C to 5 ° C from room temperature due to water evaporation from the side of the pot, etc., but fluctuated at 14 ° C to 28 ° C during the cultivation period. The test body of the present invention was observed to grow flower buds from July, wrinkled from August, and flowered in September. The comparative specimen showed no flower bud growth even in September. Thus, according to the method of the present invention, flowering of phalaenopsis can be made without limiting the season, and phalaenopsis cultivation can be enjoyed.

DESCRIPTION OF SYMBOLS 1 Bowl 2 The container which can be inserted airtight 3 Film tubes, such as polyethylene 4 C steel 5 One end of the closed tube 6 The other end of the tube 7 Pipe 7 which ventilates
8 Pipe for water supply 9 Cultivation pot 10 Ventilation hose 11 Plastic container 12 Porous ceramic pipe 13 Rubber plug 14 Ventilation plastic hose 15 Polyethylene film tube 16 Welded cutting part 17 Opening part between semi-circles

Claims (5)

  In the plant cultivation apparatus, the cultivation medium is directly cooled by ventilating the cultivation medium such as soil for growing the plant.   In the cultivation method using a bottom water basin using C steel (water supply tub), the entire C steel is covered with a plastic film tube, an opening through which the container can be inserted is provided in the tube, and the container having a through hole through which a water absorbent string passes is provided. The plant cultivation apparatus according to claim 1, wherein the cultivation medium is directly cooled by connecting to C steel, inserting a pot in close contact with the container, and venting from the plastic film tube.   The plant cultivation apparatus according to claim 1, wherein a rubber hose or the like is inserted into a container that maintains airtightness and adheres closely to the bottom of the pot, and the cultivation medium is directly cooled by ventilating the pot from the bottom of the pot through the rubber hose or the like.   The plant cultivation apparatus according to claim 1, wherein a through-hole for venting is provided on a side surface or a bottom portion of the pot, a hose is connected, and the cultivation medium is directly cooled by ventilating the pot through the hose.   2. The plant cultivation apparatus according to claim 1, wherein in the ground planting cultivation, a breathable pipe or hose is installed in the underground stem or root portion, and the cultivation medium is directly cooled by aeration through the pipe or hose.