JP6230932B2 - Bag for grape cultivation - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a bag for straw cultivation used for fungus bed cultivation, and more specifically, it can efficiently circulate oxygen and carbon dioxide in the bag, suppress the release of water vapor, and keep the inside of the bag at a suitable humidity. The present invention relates to a bag for straw cultivation.

  In recent years, mushrooms such as shiitake mushrooms, maiko, shimeji, and namoko have become popular from natural harvesting using raw wood to cultivation of fungus beds using bags for cultivation indoors equipped with air conditioning equipment.

  For this fungus bed cultivation, for example, in the case of shiitake mushrooms, a medium adjustment step for adjusting the medium by adding nutrients such as rice bran to a base material such as sawdust, a container for packing the adjusted medium in a cultivation container of a predetermined size The sterilization process in which the medium packed in this container is sterilized or sterilized or sterilized by sterilization or sterilization, the inoculation process in which shiitake bacteria are inoculated after cooling so that no germs enter this medium, and the temperature and humidity are adjusted. Cultivation process for several weeks, then take out the fungus bed from the cultivation container, adjust the temperature and humidity to generate and grow shiitake mushrooms while culturing the fungus bed, and harvest the grown shiitake mushrooms It goes through a process such as a harvesting process.

  In the cultivation process in this fungus bed cultivation, carbon dioxide is generated from the fungus bed in the cultivation bag in the cultivation process, so ventilation that supplies fresh air (oxygen) to the inside while sequentially releasing this carbon dioxide is necessary. Therefore, a special filter with this ventilation function is attached to the cultivation bag. Whether or not the release of carbon dioxide and the supply of oxygen can be carried out in an amount suitable for the cultivation of each cocoon has a great influence on the growth, quality, cultivation period and harvesting of the cocoon. The cultivation bag and cultivation method devised so that supply of can be performed satisfactorily are used.

  For example, the invention of the straw bag disclosed in the following Patent Document 1 is made of plastic, is provided with a bottom filter near the bag bottom and a bag mouth filter near the bag mouth, and allows air to pass as these filters. Using what does not allow germs to pass through, further folding the top of the bottom filter, filling the fold line part as a temporary bottom to the site that does not contact the bag mouth filter, sterilization and sealing the bag mouth, The inoculum is inoculated in the substantially central part of the medium, and then cultured in a state where it can be ventilated from the bottom and the bag mouth filter. By adopting such a configuration, according to the bag cultivation bag disclosed in Patent Document 1 below, the culture medium does not come into contact with the filter member in the long bag having the ventilation filter at both ends of the bag bottom and the bag mouth. By filling the culture medium and inoculating the inoculum in the substantially central part, the spread of hyphae is started in both the upper and lower directions, and the cultivation period can be almost halved.

  Moreover, the invention of the bag body for mushroom cultivation disclosed in the following Patent Document 2 forms a plurality of extremely fine bottomed recesses on the surface of the synthetic resin film, and uses the synthetic resin film as a bag to form the bottomed recess. It is assumed that it has air permeability by the bottom. With such a configuration, according to the mushroom cultivation bag disclosed in Patent Document 2 below, the bag body has air permeability, so the culture medium in the bag body contains the inside of the bag body on the upper surface. Air can be supplied not only from the empty part but also from the front, back, left and right side surfaces, and carbon dioxide accumulated in the medium can be directly discharged to the outside not only from the top surface but also from the front, back, left and right side surfaces. For this reason, sufficient air can be supplied to the inoculum regardless of the upper and lower positions of the culture medium. This allows the mycelial culture to proceed almost uniformly, shortening the time required for the culture, and improving productivity. Can be improved.

Japanese Patent Application Laid-Open No. 06-141677 JP 09-051723 A

  In the culture medium in the cultivation bag, in order for the mycelium to breathe, it is necessary to circulate oxygen and carbon dioxide efficiently, and moderate humidity is necessary to prevent the culture medium in the cultivation bag from drying. Become. When the mycelium respires in the cultivation bag, water vapor is released. If this water vapor is released more than necessary from the cultivation bag, the culture medium dries out and hinders the growth of the mycelium.

  Furthermore, in recent years, an attempt has been made to increase the yield by early growing the straw. Thus, in order to grow the cocoon at an early stage, it is necessary for the whole mycelium of the culture medium in the cultivation bag to breathe, a large amount of oxygen is required, and a large amount of carbon dioxide is discharged. Therefore, it is necessary to circulate a large amount of oxygen and carbon dioxide more smoothly, and to suppress the release of water vapor.

  However, in the bag cultivation bag disclosed in Patent Document 1, filters are provided near the bottom of the bag and near the bag mouth, but the place where oxygen and carbon dioxide circulate is only the part where the filter is provided. It becomes difficult to circulate the whole, in particular, the portion corresponding to the bottom of the medium and the inside of the medium. In addition, the medium in the portion where the filter is provided is easy to dry.

  Moreover, in the bag body for mushroom cultivation disclosed by the said patent document 2, although the whole bag body has air permeability, in the very fine bottomed recessed part formed in the bag body, it is in the penetrated hole. The air permeability is inferior compared. Further, if even one of the bottomed recesses is penetrated in the bag body, there is a risk that germs or the like may enter from the penetrated portion. In addition, it is unclear whether the bottomed recess can sufficiently release water vapor, and it may be difficult to maintain the inside of the bag at an appropriate humidity.

  The inventor can smoothly circulate oxygen and carbon dioxide in the bag for grape cultivation, and forms a plurality of apertures on the side surface of the bag for grape cultivation, By covering the formed side surface with a cover sheet provided with a filter member, the mycelium pair of the entire culture medium can breathe and the release of water vapor can be suppressed by a plurality of openings. The present invention has been completed.

  That is, an object of the present invention is to enable efficient circulation of oxygen and carbon dioxide, to maintain a moderate humidity by suppressing the release of water vapor, and to promote the growth of straw. It is to provide a bag for cultivation.

In order to achieve the above object, the bag for grape cultivation according to the first aspect of the present invention comprises:
In a bag for straw cultivation having a bottom surface, a side surface erected from the periphery of the bottom surface, and a bag body having an open top,
A plurality of apertures are formed on the side surface of the bag body,
A cover sheet that covers the side surface is attached to the side surface where the opening is formed,
The cover sheet is provided with a ventilation portion in at least one place.

  Further, the bag for straw cultivation according to the second aspect is the bag for straw cultivation according to the first aspect, wherein the ventilation part is a filter in which the through hole is closed with at least one through part formed in the cover sheet. It is comprised by the member.

Moreover, the bag for straw cultivation of the 3rd aspect is the bag for straw cultivation of the 1st or 2nd aspect, The said bag body is formed with the said bottom face in a quadrilateral shape,
The plurality of apertures are formed in at least one of the side surfaces standing from the periphery of the bottom surface.

  Moreover, the bag for straw cultivation of the 4th aspect is a bag for straw cultivation of the 3rd aspect, The said some opening is formed in both of the said said side surfaces which oppose.

  Moreover, the bag for straw cultivation of the 5th aspect is formed with the cover sheet provided in one side surface and the cover sheet provided in the other side surface in the bag for straw cultivation of any one of the first to fourth aspects. The position of the ventilation part to be different is different.

  Moreover, the bag for grape cultivation according to the sixth aspect is the bag for grape cultivation according to any one of the second to fifth aspects, and the through portion formed in the cover sheet is formed by one through hole. Or a plurality of small through holes formed in a predetermined range.

  Moreover, the bag for straw cultivation of the 7th aspect is the bag for straw cultivation of any one of the 1st-6th aspects, The thickness of the said cover sheet is formed thinner than the thickness of the said bag body. It is characterized by that.

  Moreover, the bag for straw cultivation of the eighth aspect is the bag for straw cultivation of any one of the first to seventh aspects, wherein the cover sheet is attached to the outer peripheral side of the side surface of the bag body. Features.

  Moreover, the bag for straw cultivation of the ninth aspect is the bag for straw cultivation of any one of the first to eighth aspects, wherein the plurality of openings formed in the bag body have a diameter of 3 mm or less. Is a feature.

  By providing the above configuration, the present invention has the following excellent effects. That is, according to the bag for grape cultivation according to the first aspect, since a plurality of holes are formed in the bag body, the mycelium inoculated in the culture medium can sufficiently breathe, and thus promote growth. Can do. Moreover, since the opening is formed also in the part by which the culture medium of a bag body is packed, the mycelium which entered the inside of a culture medium can also respire enough, and can promote growth by the whole culture medium. Furthermore, since the cover sheet is provided on the side surface of the bag body on which the plurality of holes are formed, the medium is dried even if the bag body has a plurality of holes. Can be suppressed. In addition, since the ventilation part is provided in the cover sheet at least at one place, supply of oxygen through the cover sheet in the bag body and discharge of carbon dioxide can be performed without any problem.

  Moreover, according to the bag for grape cultivation of the 2nd aspect, since the cover sheet is provided with the penetration part and the filter member which covers this penetration part in at least one place, the oxygen through the cover sheet in the bag body Supply and discharge of carbon dioxide can be performed without problems. Since the filter member is a filter member that prevents entry of bacteria and has a predetermined air permeability and moisture permeability, even if a plurality of openings are formed in the bag body, bacteria such as germs from the outside of the bag body may be used. Intrusion can be suppressed.

  Moreover, according to the straw cultivation bag of the 3rd aspect, the selection range of the shape of a bag body spreads, and what was adapted to the environment and installation which grows can be obtained.

  Moreover, according to the bag for straw cultivation of the 4th aspect, since the some opening is formed in both surfaces of the bag body, cultivation of straw can be performed efficiently. In addition, it is preferable that this both side surface is a surface where the crease | fold of the bag body is not attached.

  Moreover, according to the bag for grape cultivation of the 5th aspect, what was adapted to the environment and equipment to be cultivated can be obtained by attaching the cover sheet | seat from which the position of a ventilation part differs to a bag body. Further, by changing only the cover sheet, various bag cultivation bags can be obtained, and the bag body itself can have the same configuration, so that the manufacturing cost can be suppressed.

  Moreover, according to the bag for grape cultivation of a 6th aspect, the water vapor | steam etc. which pass by the magnitude | size of a through-hole and the number of the small through-holes to form can be controlled according to the environment and installation to grow.

  Moreover, according to the bag for straw cultivation of the 7th aspect, the cost which manufactures a cover sheet can be held down. Further, since the cover sheet covers the bag body and does not require high strength, it can be used without problems even if it is formed thin.

  Moreover, according to the bag for straw cultivation of the 8th aspect, a cover sheet can be attached avoiding the some opening formed in a bag body.

  Further, according to the bag for cultivation of straw of the ninth aspect, the plurality of openings formed in the bag body are sized to efficiently circulate oxygen and carbon dioxide in the bag body, and the medium is spilled. It can be a size that does not. That is, if the size of the opening is too small, the medium will not spill, but the circulation efficiency of oxygen and carbon dioxide will deteriorate, and if it is too large, the circulation of oxygen and carbon dioxide will improve. Will start to spill.

FIG. 1A is a perspective view of a bag for straw cultivation of Embodiment 1, and FIG. 1B is a perspective view of a state in which a culture medium is packed in the bag for straw cultivation. It is an exploded view of the bag for straw cultivation shown in Drawing 1A. 3A is a perspective view of the cover sheet, FIG. 3B is an exploded view of the cover sheet, and FIG. 3C is a perspective view of another example of the cover sheet. It is a flowchart which shows the cultivation process of shiitake. 5A to 5D are perspective views showing still other examples of the cover sheet.

  Hereinafter, the best embodiment of the present invention will be described with reference to the drawings. However, the embodiment shown below exemplifies the bag for straw cultivation for embodying the technical idea of the present invention, and is not intended to specify the present invention. Other embodiments within the scope are equally applicable. Hereinafter, using shiitake mushrooms as a type of koji, a bag for koji cultivation will be described.

[Embodiment 1]
With reference to FIGS. 1-3, the bag for straw cultivation concerning Embodiment 1 is demonstrated. As shown in FIG. 1A, the bag 10 for straw cultivation is covered with a bag body 11 formed of a film material having a predetermined thickness, and both side surfaces 13 and 14 of the bag body 11, and a ventilation portion 22 is partly provided. The bag body 11 and the cover sheet 21 are attached by being thermally welded by an attachment portion 29. And when using the bag 10 for straw cultivation, as shown to FIG. 1B, the culture medium 18 is packed in the bag body 11, and after inoculating inoculum, the upper part is sealed.

  As shown in FIGS. 1 and 2, the bag body 11 is provided with a rectangular bottom surface 12 having a predetermined length L and a width length W, and a predetermined height H from the long side of the bottom surface 12. Side surfaces 13 and 14 having a large area and side surfaces 15 and 16 having a small area standing at a predetermined height H from the short side of the bottom surface 12 are provided. Moreover, the upper part which opposes the bottom face 12 is opened, and while this opened part becomes the bag mouth 17, it becomes the sealing part 17a sealed (refer FIG. 1B).

  In the side surface of the bag body 11, in the first embodiment, a plurality of small holes 27 are formed on the side surfaces 13 and 14 having a large area over the entire side surfaces 13 and 14. Further, the side surfaces 15 and 16 having a small area are surfaces on which folds are formed, and the bag body 11 is a so-called gusset bag.

  In addition, the bag body 11 of the bag 10 for straw cultivation is divided into a filling part 19 filled with the culture medium 18 and a space part 20 which is above the filling part 19 and becomes a space as shown in FIG. 1A. Yes. At this time, the plurality of apertures 27 formed on both side surfaces 13 and 14 of the bag body 11 are formed across the filling portion 19 and the space portion 20. The medium filled in the filling unit 19 is filled with a mixed material in which a medium mainly composed of sawdust, rice bran, and bran, a nutrient, and water are mixed at a predetermined ratio.

  As a material of the bag 11, a synthetic resin film such as polyethylene, polypropylene, or polyester, a biodegradable film, or a photocatalytic film is used, and the thickness thereof is, for example, 10 to 100 μm. By forming the bag 11 with a film material, it is light and easy to handle and can be easily produced at low cost.

  Further, as shown in FIG. 2, one opening 28 of the plurality of openings 27 formed on the side surfaces 13 and 14 has a size that allows sufficient circulation of oxygen and carbon dioxide, and the bag 11 The medium 18 filled therein is formed in such a size that does not leak out, and is formed in a size of 3 mm or less, for example. The formation of the plurality of apertures 27 can be performed by a known method as long as it can penetrate the film material. As a method of forming the plurality of apertures 27, for example, it can be formed by irradiating a laser beam with a laser irradiation device, or using a roller having a sharp projection such as a needle. Further, as shown in FIG. 2, the plurality of apertures 27 are formed at equal intervals. This space | interval can be changed with the straw, environment, etc. to grow.

Moreover, the length L, the width length W, and the height H of this bag 11 are, for example, L is 200 mm, W is 120 mm, and H is 382.5 mm. The filling portion 19 is located at a predetermined height H ₁ from the bottom surface 12, and the space portion 20 is located at a height H ₂ from the top of the filling portion 19. The height H ₁ is 150 mm, for example, and the height H ₂ is 232, for example. .5 mm. Furthermore, the size of the bag is not limited to the above dimensions.

  As shown in FIGS. 2 and 3, the cover sheet 21 is formed of a film material having substantially the same size as the side surfaces 13 and 14 of the bag body 11 to which the cover sheet 21 is attached. As the material of the cover sheet 21, as in the case of the bag body 11, a synthetic resin film such as polyethylene, polypropylene, or polyester, a biodegradable film, or a photocatalytic film is used. By forming the cover sheet with a film material, it is light and easy to handle, can be easily produced at low cost, and the cover sheet can be easily attached to the bag body. Further, the cover sheet is formed to have the same thickness as the bag body or thinner than the thickness of the bag body. By forming the cover sheet thinner than the bag, it can be manufactured at a lower cost.

  As shown in FIGS. 3A and 3B, the cover sheet 21 has a ventilation portion 22 formed on the surface thereof. The ventilation portion 22 is a portion that prevents entry of bacteria and has a predetermined air permeability and moisture permeability. The ventilation part 22 according to the first embodiment includes a penetration part 23 that penetrates the cover sheet 21 and a filter member 26 that covers the penetration part 23. The through portion 23 of the first embodiment is a single through hole 24 formed with a predetermined diameter, and the through hole 24 is closed by a filter member 26. The material of the filter member 26 is a porous sheet that prevents invasion of various bacteria and is air permeable, for example, a plurality of pores having a pore diameter of 0.02 × 0.2 μm to 0.04 × 0.4 μm. used. In addition, a filter member is not limited to this, You may use what was formed with various paper materials, a nonwoven fabric, and a film material. Moreover, the attachment to the cover sheet 21 of the filter member 26 can use a well-known method, for example, can also attach using an adhesive or can also attach by heat welding.

  Further, the through-hole formed in the cover sheet 21 is not limited to a circle, but may have another shape such as an ellipse, a square, or a rectangle. Furthermore, although the circular member is used in Embodiment 1, the filter member is not limited to this, but may be a polygonal shape including a quadrangle or an elliptical shape. Moreover, it can also select arbitrarily about the height (refer FIG. 3C) which forms the ventilation | gas_flowing part 22 according to the cultivation cultivated, the environment, and the magnitude | size of a through-hole. In this case, for example, the ventilation portion of the cover sheet on one side surface and the ventilation portion of the cover sheet on the other side surface can be provided at different heights.

  The bag body 11 and the cover sheet 21 are attached by thermal welding, with the outer peripheral portion 11a of the side surfaces 13 and 14 formed with a plurality of openings 27 of the bag body 11 and the outer peripheral portion 21a of the cover sheet 21 being combined. It is done. This thermally welded portion becomes the attachment portion 29. At this time, since the bag mouth 17 side of the bag body 11 and the cover sheet 21 is welded together when the bag mouth 17 is sealed, thermal welding can be omitted. Moreover, a double-sided tape or an adhesive material can also be used for attaching the cover sheet 21 to the bag body 11. In that case, it is necessary to select a material that does not dissolve the film material constituting the bag or the cover sheet, a material that does not harm the growth and quality of the bag, or a material that does not harm the human body. Thus, the bag for bag cultivation of Embodiment 1 is formed by attaching a bag body and a cover sheet and uniting them. In addition, when attaching a cover sheet to a bag body, it is performed in the state which closed the bag body.

  Next, with reference to FIG. 4, the method of cultivating shiitake mushroom using the bag 10 for cultivating the first embodiment will be described. In the cultivation process of shiitake mushrooms, in step I shown in FIG. 4, rice bran is mixed as a nutrient to a predetermined amount of sawdust, and a predetermined amount of water is added to adjust the medium. The medium 18 adjusted in the step II is filled up to the filling part 19 of the bag 11 of the bag 10 for straw cultivation. The bag mouth 17 opened at the upper end of the bag 10 for cultivating straw is temporarily fixed, and the bag 10 for cultivating the grape is put in a high-pressure pot and sterilized or sterilized (step III). Next, it is sterilized and then cooled (step IV). Then, it conveys to a clean room, and the bag mouth 17 of the bag 10 for grape cultivation is open | released in this clean room, and the inoculum of shiitake mushroom is inoculated (process V). By this inoculation, inoculum of shiitake mushroom is inoculated into the culture medium 18 from the bag mouth 17 of the bag for cultivating persimmon.

  Subsequently, the bag 10 for straw cultivation is conveyed to a predetermined culture room, and initial culture is performed in this culture room (step VI). In this initial culture, the medium is cultured in an environment suitable for mycelial culture, for example, at room temperature of 18 to 20 ° C. and humidity of 60% in a substantially dark state without irradiation with light. This period is about 30 days. In the subsequent aging culture, the medium 18 is aged in an environment suitable for aging culture, for example, a room temperature of 20 to 23 ° C. and a humidity of 60%. The period is about 30 days. Thereafter, aging culture is performed (step VII). In this ripening culture, nutrients are accumulated in the medium for about 60 days to 70 days by irradiation with an environment suitable for ripening culture, particularly predetermined light.

  After this ripening culture is completed, the cocoon cultivation bag 10 is removed to generate cocoons (step VIII). In this generation process, the first wrinkles are generated and nurtured immediately from the portion where the formation of the primordium is promoted. That is, the first generation occurs from the surface of the medium. In this process, immediately after the bag for straw cultivation is removed, the surface of the medium that has been in close contact with the bag for straw cultivation is in a whitish state. To do.

  As mentioned above, since the some opening 27 is formed in the bag body 11 by using the bag 10 for straw cultivation of Embodiment 1, since circulation of many oxygen and carbon dioxide can be performed efficiently, inoculation The mycelium that has been made can fully breathe and promote growth more. In addition, since a plurality of apertures 27 are formed in the portion of the bag 11 that is filled with the medium, the mycelium in the deep part of the medium can also sufficiently breathe, and promote the growth of the whole medium. Can do. Furthermore, since the cover sheet 21 is provided so as to cover the side surfaces 13, 14 on the side surfaces 13, 14 in which the plurality of openings 27 of the bag body 11 are formed, a plurality of openings are formed in the bag body 11. Even if 27 is formed, drying of the medium can be suppressed.

  In addition, in the bag 10 for straw cultivation of Embodiment 1, although the some opening was provided in a pair of side surface which opposes, it is made to form only in one side surface, and a cover sheet is provided in this side surface It may be as follows.

  Moreover, in the bag 10 for straw cultivation of Embodiment 1, although the case where the through-hole 24 formed in the cover sheet 21 was provided one each in a pair of side surface was demonstrated, not only this but the some ventilation | gas_flowing part 22 is provided. You may make it form. For example, as shown in FIG. 5A, a plurality of ventilation portions 22A can be provided at different heights. Moreover, as shown to FIG. 5B, the some ventilation | gas_flowing part 22B can also be arranged in the same height. When a plurality of through holes are provided adjacent to each other, the plurality of through holes can be blocked using a single large filter member according to the position of the through hole. Furthermore, as shown in FIGS. 5C and 5D, the through portion 23C of the ventilation portion 22C is not limited to one large through hole, and a plurality of small through holes 25 may be formed within a certain range. . In this case, a filter member is provided so as to cover a range where the plurality of small through holes 25 are formed (not shown).

  In this way, by attaching the cover sheet having a different position of the ventilation portion to the bag body, it is possible to obtain one that is adapted to the environment and equipment to be cultivated. Furthermore, by changing only the cover sheet, it is possible to obtain various bags for straw cultivation, and the bags themselves can be of the same configuration, so that the manufacturing cost can be suppressed.

  Moreover, in the bag 10 for straw cultivation of Embodiment 1, although the shape of the bottom face 12 of the bag body 11 is made into the rectangular thing, it is not restricted to this, As shapes, such as a square shape, a polygonal shape, a circular shape, and an ellipse shape Also good. At this time, when the bottom surface has a square shape and there is no difference in the size of the area, a plurality of holes are formed on the opposing side surfaces that are not creased. Also,

  Moreover, in the process V which inoculates the inoculum of shiitake of the cultivation method mentioned above, the inoculum to inoculate can also be made into the liquid inoculum of shiitake. Since the liquid inoculum is easier to enter the medium than the conventional inoculum, the mycelium grows early in the entire medium. As the mycelium grows faster, the respiration rate of the mycelium increases, and the amount of oxygen required and the amount of carbon dioxide exhausted increase. Therefore, since a plurality of holes are formed in the side surface of the bag body by using the bag for straw cultivation of Embodiment 1, it is possible to smoothly and efficiently circulate oxygen and carbon dioxide throughout the medium. Thus, it becomes possible to cope with liquid inoculum. Moreover, since the cover sheet is attached to the side surface in which the plurality of apertures are formed, it is possible to suppress the release of water vapor and maintain an appropriate humidity.

10: Bag for bag cultivation 11: Bag body 11a: Outer peripheral part 12: Bottom surface 13-16: Side surface 17: Bag mouth 17a: Sealing part 18: Medium 19: Filling part 20: Space part 21: Cover sheet 21a: Outer peripheral part 22: Ventilation part 23: Through part 24: Through hole 25: Multiple small through holes 26: Filter member 27: Multiple openings 28: Opening holes 29: Attachment part

Claims (9)

In a bag for straw cultivation having a bottom surface, a side surface erected from the periphery of the bottom surface, and a bag body having an open top,
A plurality of apertures are formed on the side surface of the bag body,
A cover sheet that covers the side surface is attached to the side surface where the opening is formed,
The cover sheet is provided with a ventilation portion at least at one place, and is a bag for straw cultivation.   The bag for cultivating strawberries according to claim 1, wherein the ventilation part is constituted by at least one penetration part formed in the cover sheet and a filter member that closes the penetration hole. The bag body is formed with a square bottom surface,
The bag for straw cultivation according to claim 1 or 2, wherein the plurality of apertures are formed in at least one of the side surfaces provided upright from the periphery of the bottom surface.   The bag for straw cultivation according to claim 3, wherein the plurality of openings are formed on both of the opposing side surfaces.   The bag for straw cultivation according to any one of claims 1 to 4, wherein a position of the ventilation part formed by a cover sheet provided on one side and a cover sheet provided on the other side is different.   The said penetration part formed in the said cover sheet is formed with one through-hole, or is formed with several small through-holes formed in the predetermined range, A bag for straw cultivation according to any one of the above.   The bag for straw cultivation according to any one of claims 1 to 6, wherein the cover sheet is formed thinner than the bag body.   The bag for straw cultivation according to any one of claims 1 to 7, wherein an outer peripheral side of the side surface of the bag body is attached to the cover sheet.   The bag for straw cultivation according to any one of claims 1 to 8, wherein the plurality of openings formed in the bag body have a diameter of 3 mm or less.

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