JP2003319717A - Method and tool for promoting growth of plant organ - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for promoting the growth of a specific organ such as the tuber, tuberous root, bulb, corm, rhizome, leaves or seeds of an edible crop. <P>SOLUTION: The method for promoting the growth of a specific organ of the edible crop comprises steps of preparing a transparent or translucent cylindrical form, filling at least part of the inside of the cylindrical form with soil, planting the soil with a plant seedling or sowing the soil with seeds, growing at least part of the underground portion of the plant seedling in the soil, while setting the cylindrical form so as to grow the other portion of the plant seedling terrestrially. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to the field of agriculture,
In particular, methods and devices used to promote the growth of specific organs such as tubers, tubers, bulbs, corms, rhizomes, leaves or seeds of food crops are described.

[0002]

2. Description of the Related Art Conventionally, in order to promote the growth of food crops such as potatoes, root vegetables and legumes, conditions such as fertilization, soil and temperature are optimally set.
Control methods have been used, but no significant growth promotion or yield increase has been observed. These potato tubers, onion bulbs, root vegetable rhizomes, and legume seeds are
From the nutritional point of view of carbohydrate source, vegetable fiber source, plant protein source, vitamin source, mineral source, etc., and from the industrial point of view of alcohol fermentation raw materials, it is strongly desired to improve its productivity. Moreover, no cultivation means has been found that can easily and significantly increase the yield.

On the other hand, the applicant of the present application has found that the growth of these trees can be controlled by covering the above-ground parts of seedlings of woody plants such as conifers and broad-leaved trees with a tubular body, and has already applied for a patent. (Japanese Patent Laid-Open No. 11-124148). The growth-promoting effect of covering the above-ground part of this woody plant with a tubular body is to block specific wavelength components of light, and components emitted by the plant (carbon dioxide, gases such as ethylene).
It is considered to be achieved by shielding the water, suppressing changes in ambient temperature, and maintaining water content.

[0004]

In view of the above-mentioned circumstances, the applicant of the present invention has also studied the influence of the tubular body on the underground system of the plant, and as a result, surprisingly, at least the tubular system of the plant has a tubular body. It was found that the production of tubers, tuberous roots, bulbs, corms, rhizomes, leaves or seeds of the plants is promoted and the yield is remarkably increased by covering them with, and thus the present invention has been completed.

That is, in the first aspect of the present invention, (a) a transparent or semi-transparent cylindrical body is prepared; (b)
At least a part of the inside of the tubular body is filled with soil, and a seedling of the plant is planted or seed is sown in the soil; and (c) at least a part of the underground portion of the plant is filled in the inside of the tubular body. Provided is a method for promoting growth of a tuber, tuber, bulb, corm, rhizome, leaf or seed of a plant, which comprises growing a tubular body so as to grow and an aerial part of the plant grows on the ground.

Further, the present invention, as a second aspect thereof,
It is a transparent or translucent tubular body that fills at least a part of the inside with soil, at least a part of the underground part of the plant grows in the soil, and the above-ground part of the plant grows on the ground. There is provided a device for promoting growth of plant tubers, tubers, bulbs, corms, rhizomes, leaves or seeds. According to these aspects of the present invention, simply and remarkably, the tuber, tuber, bulb, corm, rhizome of the target plant,
It can promote the growth of plant organs such as leaves or seeds and increase their yield.

[0007] In the present specification, unless otherwise specified, the term "cylindrical body" refers to a hollow tube-shaped object having open ends.

In the present specification, transparent or translucent means the optical characteristics of an object having a light transmittance of 100 to 30%, and opaque means the optical characteristics of an object having a light transmittance of less than 30%. It is a characteristic.

[0009] In the present specification, the term "soil" means soil, vermiculite, sand, artificial gravel or other medium for cultivating plants, which is put inside the tubular body in the method and apparatus for promoting growth of the present invention. The terms "underground" and "underground" refer to the space above and below the ground and outside the soil as defined above, respectively.

In the present specification, the above-ground part and the below-ground part of a plant refer to the parts of the plant formed above and below the ground when the plant is cultivated in soil under ordinary conditions.

In this specification, the terms "upper" and "lower" refer to relative positions in the vertical direction. Further, in the present specification, to stand upright and to lie down sideways means to install an object in a substantially vertical direction and a substantially horizontal direction with respect to the ground, respectively.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a growth promoting device and a growth promoting method according to the present invention will be described below with reference to the accompanying drawings of FIGS. 1 to 3. Since the growth promoting device of the present invention corresponds to the tubular body used in the growth promoting method of the present invention, the growth promoting device will be described here.

As shown in FIG. 1, the growth promoting device according to the first embodiment comprises a tubular body 1 having a circular cross section, and an opening at the lower end side thereof is closed by a lid 2 having a drainage hole 3. . Then, the soil 4 is filled in the tubular body 1, the target cultivated plant 5 is planted, and a part of the lower end of the tubular body 1 is buried underground.

The tubular body 1 may be buried not only in a part thereof but also in the whole ground, or the whole body may be installed on the ground. Further, the cross section of the tubular body 1 is not limited to a circular shape, and may have a polygonal cross section of a triangle or more, preferably an even polygonal cross section of a quadrangle or more, and more preferably a regular hexagon, a regular octagon, or a regular octagon. It has a dodecagonal cross section. Further, the lid 2 is not always necessary and can be appropriately provided at one end or both ends of the tubular body 1 depending on the cultivation environment and the cultivated plant. Further, the water drainage hole 3 of the lid 2 can be appropriately provided depending on the cultivation environment and the cultivated plant.

In the growth promoting device according to the second embodiment, as shown in FIG. 2, a tubular body 1 having a dodecagonal cross section is buried underground in a state of being laid down. The tubular body 1 is closed by a lid 2 having drainage holes 3 at both end openings, and a cutout portion 6 is provided on the side surface thereof. Then, while filling the soil 4 in the tubular body 1, the underground portion of the cultivated plant 5 is planted in the soil 4 exposed from the cutout portion 6.

In the present embodiment, the case where the entire tubular body 1 is buried underground has been described, but it is also possible to install the entire tubular body 1 on the ground, or under the ground so that a part of it is exposed from the ground. It can also be buried. Further, the cross section of the cylindrical body 1 is not limited to a dodecagonal shape, and may have a circular cross section or a polygonal cross section of a triangle or more, preferably a quadrangle or more even polygonal cross section, and more preferably. It has a regular hexagonal or regular octagonal cross section. Further, the lid 2 is not always necessary, and can be appropriately provided at one end or both ends of the tubular body 1 depending on the cultivation environment and the cultivated plant. Further, the water drainage hole 3 of the lid 2 can be appropriately provided depending on the cultivation environment and the cultivated plant.

As shown in FIG. 3, the growth promoting device according to the third embodiment comprises the tubular body 1 shown in the second embodiment and another tubular body 7 surrounding the above-ground part of the cultivated plant. This is the case when combined. Since the tubular body 1 is almost the same as that of the second embodiment, the description thereof will be omitted.

On the other hand, the cylindrical body 7 surrounding the above-ground part of the plant
Is the tubular body 1 in the first and second embodiments.
Having the same or different material, cross-sectional shape, inner diameter or length, usually installed on the ground, the soil is not filled inside, but part of it is buried underground depending on the cultivation environment and cultivated plants. Or may fill the soil. By installing the tubular body 7, it is possible to promote the growth of the above-ground part of the cultivated plant.

When a part of the growth promoting device projects above the ground, as described in Registered Utility Model Publication No. 30095585, a folding piece connected to the end of the tubular body and a piece extending from the folding piece. Even if the plant grows outside the tubular body, the damage to the edge of the tubular body of the plant is suppressed even if the plant grows outside the tubular body, by providing the locking retainer and the cut portion provided on the side surface. be able to.

Further, registered utility model publication No. 300958
As described in No. 5, when it is applied to plants that do not like humidity, it is possible to suppress an increase in temperature and humidity by providing ventilation holes on the side surface of the tubular body.

The growth-promoting device of the present invention may be made of any material, but it is transparent, semi-transparent or opaque and has some stretchability. It is made of a material that has no gas exchange ability and does not corrode when left outdoors or buried in the soil for a certain period. The growth promoting device of the present invention is preferably made of plastic such as polypropylene or polyethylene as a base material. The growth promoting device can be produced by integrally molding the melt of the plastic melt by a conventional method.

Alternatively, the growth promoting device of the present invention can be made into a tubular body having a circular cross section by once preparing a sheet from the melt and rolling the sheet and joining the side portions. Alternatively, as described in Registered Utility Model Publication No. 30095585, a tubular body having a polygonal cross section can be created by bending along a notch formed in the sheet surface. Also,
Alternatively, for example, the side portions of a plurality of sheets may be joined together by joining the side portions of two sheets for a tubular body having a hexagonal cross section into a sheet for a tubular body having a dodecagonal cross section. It can also be joined to create a tubular body with a larger inner diameter and a circular or polygonal cross section, or by joining the openings of multiple tubular bodies, a tubular body with a longer overall length You can also create a body. Thereby, the inner diameter, the cross-sectional shape, and the total length of the tubular body can be appropriately adjusted by using a single size sheet, and the manufacturing cost can be reduced.

The wall thickness of the growth promoting device of the present invention is usually 0.1 to 2.0 mm, preferably 0.3 to 1.5 mm, more preferably 0.5 to 0.9 mm, and most preferably 0.5. 6
Is 0.8 mm, and the wall thickness of the notch when making the notch on the sheet surface is usually 0.07 to 1.4 mm, preferably 0.21 to 1.05 mm, more preferably 0.35. ~ 0.
63 mm, most preferably 0.42 to 0.56 mm. The maximum inner diameter of the growth promoting device varies depending on the size and shape of the target organ of the cultivated plant, but is 10 to 40.
cm, preferably 10-35 cm, more preferably 10
-30 cm, most preferably 10-25 cm. In addition, the total length of the growth promoting device varies depending on the size and shape of the plant organ to be cultivated, the installation mode of the growth promoting device, etc., but is usually 40 to 200 cm, preferably 50 to
180 cm, more preferably 60-160 cm, most preferably 70-150 cm.

In another aspect, the transparent or translucent growth promoting device of the present invention is preferably made of a material having the following specific optical characteristics.

First, the material of the growth promoting device is the wavelength 4
50 to 100% of ultraviolet light of 00 nm or less, preferably 7
0 to 100%, more preferably 80 to 100%, and most preferably 95 to 100%.

In addition to the above characteristics, the material of the growth promoting device has a maximum wavelength of red light of 500 to 700 nm of 20 to 20 nm.
70%, preferably cut light of wavelength of 560 to 680 nm at the maximum of 30 to 60%, more preferably 560 to 640.
The light having a wavelength of nm is cut at a maximum of 30 to 50%, and most preferably, the light having a wavelength of 580 to 620 nm is cut at a maximum of 30 to 50%. In another aspect, the material of the growth promoting device comprises up to 40-90% of infrared light having a wavelength of 700 nm or more,
Preferably, the maximum wavelength of light of 750 nm is 50 to 90%.
Cut, more preferably light with a wavelength of 800 nm or more at a maximum of 60 to 90%, most preferably 1000 nm
The light of the above wavelength is cut by 70% or more at the maximum. In another aspect, the material of the growth promoting device comprises a wavelength of 400-60.
20 nm to 90% of blue light of 0 nm at maximum, preferably 420
The light having a wavelength of 550 nm is cut by 30 to 80%, and more preferably, the light having a wavelength of 420 to 500 nm is maximum 30 to 70.
%, And most preferably, the light having a wavelength of 420 to 470 nm is cut at a maximum of 40 to 60%.

The ultraviolet light can be cut by incorporating an ultraviolet absorber into the base material. Examples of this ultraviolet absorber include, for example, benzotriazole-based, benzophenone-based, salicylate-based, cyanoacrylate-based, or the like, or
It may also serve as a deterioration inhibitor.

Further, in order to cut red light, infrared light or blue light, a suitable light absorbing dye such as a phthalocyanine compound or a naphthalocyanine compound can be mixed and dispersed in the base material.

For example, a phthalocyanine compound blocks ultraviolet light, and a naphthalocyanine compound blocks both ultraviolet light and infrared light. Further, phthalocyanine blue or the like is used to cut red light, and quinacridone red, monoazo yellow or the like is used to cut blue light.

The chemical structural formulas of these dyes are shown below.

[0031]

[Chemical 1]

[0032]

[Chemical 2]

[0033]

[Chemical 3]

[0034]

[Chemical 4]

[0035]

[Chemical 5]

The amount of the light absorbing dye to be blended depends on the type of the base material and the wall thickness of the growth promoting device, but for example, the base material 1
Phthalocyanine compound 0.05 to 100 parts by weight
0.5 parts by weight, phthalocyanine blue 0.05 to 0.5 parts by weight, quinacridone red 0.0001 to 0.01 parts by weight, monoazo yellow 0.001 to 0.1 parts by weight can be appropriately selected from the range. .

The growth-promoting device of the present invention can impart specific optical characteristics to the device itself as described above, and can be provided outside the growth-promoting device and / or outside the growth-promoting device made of a material that cuts 100% of ultraviolet light. The object of the present invention can also be achieved by sticking, for example, a plastic film that absorbs red light, infrared light, or blue light inside, and such an embodiment is also within the scope of the present invention.

Furthermore, the growth-promoting device of the present invention can be provided with the above-mentioned composite optical properties by arranging two or more devices having different optical properties so as to overlap each other in the inner diameter direction.

Alternatively, when the entire growth promoting device of the present invention is buried underground, the growth promoting device is made of an opaque material, or outside the growth promoting device and / or
Alternatively, an opaque film can be attached inside.

The plant and its organs to be cultivated by the growth promoting apparatus of the present invention include potato (Solanum tube)
tubers of rosum; sweet potato (Ipomoea batatas), yam (Dioscorea japonica Thunb.) and turnip (Bra)
Tuber roots of ssica Rapa L. var. glabra Kitamura; rhizomes of burdock (Arctium lappa) and carrot (Daucus carota); quai (Sagittaria trifolia L. var. sinensis)
Makino), ginger (Zingiber officinale Rose.) And taro (Colocasia antiquorumSchott var. Escu
Lenta Engler) corms; soybean (Glycine max), adzuki bean (Azukia angularis Ohwi) and peanuts (Arachia h)
ypogea) seeds; leeks (Allium fistulosum L.) leaves;
Onion (Allium cepa), garlic (Allium sativu)
m), Yuri (Lilium lancifolium Thun
b.), Yamayuri (Lilium auratum Lindl.) and Kouniyuri (Lilium leichtlinii var. tigrinum) bulbs and the like. preferable.

[0041]

EXAMPLES Next, specific examples of the present invention will be described in more detail by the following test examples. These test examples are intended to explain the present invention, and in any case, It is not intended to limit the invention.

Test Example 1 Okamoto polypropylene sheet (400n
A cut part is attached to 100% light less than m), the sheet is folded along the cut part and the side parts are joined to form a regular dodecagon with a total length of 70 cm, an inner diameter of 24 cm and a wall thickness of 0.7 mm. A tubular body having a cross section was created. After that, the opening at one end was closed with a regular dodecagonal lid made of the same material having a drainage hole, and the tubular body was erected so that the closed end faced downward. Then, the soil collected in the following test field was filled up to a position 10 cm from the opening above the tubular body, and one soil sweet potato (Ipomoea batatas) was placed in the soil.
I put the cuttings.

On April 20, 2001, a hole having a diameter of about 25 cm and a depth of 10 cm was dug in a test field (Kumiyama-cho, Kuse-gun, Kyoto) of Height Culture Co., Ltd., and the above cylindrical body was erected at the bottom of the hole. I set it up.

On November 15, 2001, the side of the tubular body was cracked along the fold due to the growth of sweet potato roots. The grown cuttings had 11 tubers, and the total weight of the tubers was 5.350 kg.

Test Example 2 A cylindrical body prepared in the same manner as in Test Example 1 except that a 40 cm × 15 cm cutout was provided on the side surface, and the openings at both ends were closed with a regular dodecagonal lid made of the same material. Fold it over and fill the inside of the tubular body with soil collected from the following test field from the cutout, cut one cutting of sweet potato (Ipomoea batatas) from the cutout, cut out a few cm from the cut into soil, cut out above ground. It was inserted so that it would come out of the tubular body from the part.

On April 20, 2001, at a test field of Height Culture Co., Ltd. (Kumiyama-cho, Kuse-gun, Kyoto Prefecture), a hole having a length of 80 cm, a width of 30 cm and a depth of 30 cm was dug, and the tubular body was laid over to cut out the cut portion. The tube was installed at the bottom of the hole so that it was on the upper side, and then the tube was buried underground so that the above-ground part of the sweet potato cuttings and a part of the tube appeared above the ground.

When the tubular body was taken out on November 16, 2001, the side portion of the tubular body was cracked along the fold line due to the growth of sweet potato roots. The grown cuttings had 9 tubers, and the total weight of the tubers was 5.920 kg.

Comparative Example 5 sweet potatoes cultivated under the same conditions except that the tubular body was not used, 5 tuberous roots were obtained, and the total weight thereof was 1.7.
It was 50 kg. Therefore, also from this, it was revealed that the growth promoting method and the device for promoting growth of the present invention can remarkably promote the growth of sweet potato roots and remarkably increase the yield.

Test Example 3 Okamoto Co., Ltd. polypropylene sheet (400 n
A cylindrical body having a circular cross section with a total length of 45 cm, a diameter of 24 cm, and a wall thickness of 0.7 mm was prepared by joining side portions of light having a length of m or less (100% cut). On May 16, 2000, the opening at one end was 20 cm in the soil at the test field of Height Culture Co., Ltd. (Kumiyama Town, Kuse County, Kyoto Prefecture).
It was filled up to a certain degree and set upright. Soil collected from the test field was filled up to a position 20 cm from the opening above the tubular body, and one or two soybeans (Glycine ma
x) seedlings were planted. In addition, soybean cultivated under the same conditions except that the tubular body was not used was used as a control.

Seeds were harvested from soybeans grown on July 24, 2000 and weighed. The results are shown below.

[0051] Soybean seed Cylindrical cultivation area 1 ward, 1 ward, 1 true Planting yield yield Number   1 133.67g 133.67g   1 269.30 269.30   1 186.50 186.50   1 159.03 159.03   1 185.27 185.27   1 107.00 107.00   1 161.63 161.63   2 198.33 99.165   2 146.06 73.03   2 186.06 93.03   2 259.66 129.83 Average 181.14g 145.22g 1 Honku 1 true average 171.77g 2 Honku 1 true average 98.76g

[0052] Control area 1 ward, 1 ward, 1 true Planting yield yield Number   1 120.82g 120.82g   3 207.53 69.18 Average 164.18g 95.00g

As is clear from these results, it was found that the growth promoting method and the device for promoting growth of the present invention can significantly promote the growth of soybean seeds and significantly increase the yield.

Test Example 4 Okamoto Polypropylene Sheet (400n
A cylindrical body having a circular cross section with a total length of 45 cm, a diameter of 24 cm, and a wall thickness of 0.7 mm was prepared by joining side portions of light having a length of m or less (100% cut). 2000 12
On the 13th of the month, an opening at one end of the opening was 20c in the soil at a test field of Height Culture Co., Ltd. (Kumiyama-cho, Kuse-gun, Kyoto Prefecture).
It was buried about m and set upright. Soil filled from the test field was filled up to 5 cm from the opening above the tubular body, and 1 or 2 onions (Allium cep
Planted seedlings from a). In addition, onions cultivated under the same conditions except that the tubular body was not used were used as a control.

Onions grown on June 1, 2001 were dug and the bulbs were weighed. The results are shown below.

[0056]

[0057]

As is clear from these results, it was found that the growth promoting method and the device for promoting growth of the present invention can significantly promote the growth of onion bulbs and significantly increase the yield.

[0059]

INDUSTRIAL APPLICABILITY According to the present invention, a method for promoting growth which promotes the growth of specific organs such as tubers, tubers, bulbs, corms, rhizomes, leaves or seeds of plants, and simply and remarkably increases the yield thereof, and Instruments are provided.

[Brief description of drawings]

FIG. 1 is a cross-sectional perspective view showing a first embodiment of a growth promoting device of the present invention.

FIG. 2 is a sectional perspective view showing a second embodiment of the growth promoting device of the present invention.

FIG. 3 is a cross-sectional perspective view showing a third embodiment of the growth promoting device of the present invention.

[Explanation of symbols]

(1) ... Cylindrical body; (2) ... Lid; (3) ... Drainage hole; (4)
... Soil; (5) ... Cultivated plants; (6) ... Cutouts; (7) ...
Tubular

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) A01G 1/00 302 A01G 1/00 302Z 7/00 601 7/00 601C

Claims (30)

[Claims] 1. (a) Preparing a transparent or translucent tubular body; (b) Filling at least a part of the inside of the tubular body with soil, and planting seedlings of plants or sowing seeds in the soil; Then, (c) at least a part of the underground part of the plant grows in soil filled in the inside of the tubular body, and the above-ground part of the plant is provided with the tubular body so as to grow on the ground. Method for promoting growth of tuber, tuber, bulb, corm, rhizome, leaf or seed. 2. The method according to claim 1, wherein the tubular body is installed upright. 3. The method according to claim 1, wherein a cutout portion is provided on the side surface of the tubular body, and the tubular body is placed sideways with the cutout portion facing upward so that the aboveground portion of the plant grows from the cutout portion. 4. The entire cylindrical body is installed on the ground.
~ The method according to any one of 3 to 3. 5. The method according to claim 1, wherein a part or the whole of the tubular body is buried underground. 6. The method according to claim 1, wherein an opening at one end or both ends of the tubular body is closed with a lid. 7. The method according to claim 6, wherein the lid is provided with a drainage hole. 8. The cylindrical body is made of a material that cuts light having a wavelength of 500 to 700 nm by 20 to 70% at the maximum and cuts light having a wavelength of 400 nm or less by 50 to 100%. The method described in the section. 9. A tubular body cuts light having a wavelength of 700 nm or more at a maximum of 40 to 90%, and cuts light having a wavelength of 400 nm or less to 50%.
~ Made of a material that cuts 100%.
7. The method according to any one of 7 above. 10. The tubular body is made of a material that cuts light having a wavelength of 400 to 600 nm at a maximum of 20 to 90% and cuts light having a wavelength of 400 nm or less by 50 to 100%. The method described in the section. 11. The method according to claim 1, wherein the tubular body is made of a plastic-based material such as polypropylene or polyethylene. 12. The method according to claim 1, wherein the tubular body has a cross section of a circular shape or an even polygonal shape such as a square shape or more. 13. The tubular body has a wall thickness of 0.1 to 2.0 mm, 1
The method according to any one of claims 1 to 12, having an inner diameter of 0 to 40 cm and a total length of 40 to 200 cm. 14. The tuber, tuber, bulb, corm, rhizome, leaf or seed of a plant is a potato (Solanum tuberosu).
m) tubers; sweet potato (Ipomoea batatas), yam (Dioscorea japonica Thunb.) and turnip (Brassic)
a Rapa L. var. glabra Kitamura) tuber root; burdock (Ar
ctium lappa) and carrot (Daucus carota) rhizome; Quai (Sagittaria trifolia L. var. sinensis M
akino), ginger (Zingiber officinale Rose.) and taro (Colocasia antiquorumSchott var. escule)
nta Engler) corm; soybean (Glycine max), adzuki bean (Azukia angularis Ohwi) and peanut (Arachia hyp)
ogea) seeds; leek (Allium fistulosum L.) leaves; onion (Allium cepa), garlic (Allium sativu)
m), Yuri (Lilium lancifolium Thun
b.), a lily (Lilium auratum Lindl.) and a yellow lily (Lilium leichtlinii var. tigrinum)) bulb, selected from the group consisting of any one of Claims 1-13. 15. (a) Preparing an opaque tubular body; (b) Filling at least a part of the inside of the tubular body with soil, and planting seedlings or seeds of the plant in the soil; ) A plant consisting of burying the whole tubular body underground so that at least a part of the underground portion of the plant grows in soil filled inside the tubular body, and the aboveground portion of the plant grows above the ground. Method for promoting the growth of tubers, tubers, bulbs, corms, rhizomes, leaves or seeds. 16. A transparent or semitransparent tubular body,
At least a part of the interior is filled with soil, at least a part of the underground part of the plant grows in the soil, and the above-ground part of the plant is installed so as to grow on the ground, the tuber of the plant, Growth promoting device for tubers, bulbs, corms, rhizomes, leaves or seeds. 17. The device according to claim 16, which is installed upright. 18. The device according to claim 16, wherein a cutout is provided on a side surface, and the cutout is turned upside down so that the aboveground part of the plant grows from the cutout. 19. The method according to claim 16, wherein the whole is installed on the ground.
8. The device according to any one of 8 above. 20. The device according to claim 16, wherein a part or the whole is buried underground. 21. The device according to claim 16, wherein the opening at one end or both ends is closed by a lid. 22. The drainage hole is provided in the lid.
The device according to 1. 23. The tubular body is made of a material that cuts light having a wavelength of 500 to 700 nm at a maximum of 20 to 70% and cuts light having a wavelength of 400 nm or less by 50 to 100%. The device according to paragraph. 24. The tubular body cuts light having a wavelength of 700 nm or more at a maximum of 40 to 90%, and cuts light having a wavelength of 400 nm or less to 5%.
It is made of a material that cuts 0 to 100%.
The device according to any one of 6 to 22. 25. The tubular body is made of a material that cuts light having a wavelength of 400 to 600 nm at a maximum of 20 to 90% and cuts light having a wavelength of 400 nm or less by 50 to 100%. The device according to paragraph. 26. The device according to any one of claims 16 to 25, which is made of a plastic-based material such as polypropylene or polyethylene. 27. The device according to any one of claims 16 to 26, which has a cross section of a circular shape or an even polygonal shape such as a square shape or more. 28. Wall thickness of 0.1-2.0 mm, 10-40
28. A device according to any one of claims 16 to 27 having an inner diameter of cm and a total length of 40 to 200 cm. 29. The tuber, tuber, bulb, corm, rhizome, leaf or seed of a plant is a potato (Solanum tuberosu).
m) tubers; sweet potato (Ipomoea batatas), yam (Dioscorea japonica Thunb.) and turnip (Brassic)
a Rapa L. var.glabra Kitamura) tuber root; burdock (Arc
rhizome of tium lappa) and carrot (Daucus carota);
Qui (Sagittaria trifolia L. var. Sinensis Makin
o), ginger (Zingiber officinale Rose.) and taro (Colocasia antiquorum Schott var. esculenta)
Engler) Corm; Soybean (Glycine max), Azuki (Az)
ukia angularis Ohwi) and peanuts (Arachia hypoge)
a) seeds; leek (Allium fistulosum L.) leaves; onion (Allium cepa), garlic (Allium sativum),
Lilium (Lilium lancifolium Thunb.), Lily of the valley (Lilium auratum Lindl.) And lily of the valley (L
ilium leichtlinii var. tigrinum)) bulb selected from the group consisting of the bulbs of claims 16 to 28. 30. An opaque tubular body, at least a part of which is filled with soil, at least a part of an underground part of a plant grows in the soil, and an aerial part of the plant grows on the ground. An apparatus for promoting growth of plant tubers, tubers, bulbs, corms, rhizomes, leaves or seeds, characterized in that the whole is buried underground.