JP3796244B2 - Damage prevention device for seedlings - Google Patents

Description

  The present invention protects seedlings from the damage caused by wild animals by surrounding them with a cylindrical protective cover, promotes the growth of seedlings, and prevents the damage of seedlings that promotes recovery of damaged seedlings. It relates to the device.

Conventionally, planted seedlings are planted from wild animals such as deer, wild boars, rabbits, and mice in plantations for the purpose of national land conservation such as flood control and forest conservation, and commercial plantations for the purpose of timber production. Attempts have been made to prevent early seedling growth by protecting the seedlings by protecting them. Accordingly, various damage prevention devices for protecting planted seedlings from damage caused by wild animals and the like have been proposed. One of them is as follows, for example.
It covers a seedling by covering it with a long cylindrical protective cover made of synthetic resin, so that it cannot be touched by wild animals. It is intended to protect against animal damage. This cylindrical protective cover is supported by a support column standing in the vicinity so as not to fall down (see, for example, Patent Document 1).
Japanese Patent Application No. 2000-270694 (pages 2 and 3)

  However, since the height of the protective cover is determined in advance in such a damage prevention apparatus, if the seedling grows to some extent and the height exceeds the protective cover, the seedling cannot be properly protected. There is a case. Also, if you try to increase the height of the protective cover according to the height of the seedlings, the structure is such that the protective cover is supported by a support column. Since it is necessary to replace the entire device with another one, such as replacing it with a high protective cover, it takes time and work time for each seedling increases, especially when the number of seedlings planted is large. Takes a lot of time.

  Accordingly, an object of the present invention is to provide a convenient seedling feeding damage prevention device that can adjust the height of a protective cover according to the growth of a seedling and that can be easily adjusted.

  In order to solve the above-mentioned problems, the apparatus for preventing damage to seedlings according to the present invention protects the seedlings from being damaged by animals by surrounding the seedlings with a cylindrical protective cover provided with a daylighting portion on the outer peripheral surface. A protective device, wherein the protective cover can be divided into a plurality of cylindrical bodies in the vertical direction, the lighting section is provided on the outer peripheral surface of each cylindrical body, and the lower end of the protective cover is directed downward A support member is protruded and the protective cover is made independent by inserting the support member into the ground.

According to the apparatus for preventing damage to seedlings of the present invention, the protective cover can be divided into a plurality of cylindrical bodies in the vertical direction, and a support member is provided at a lower end portion so that the protective cover can stand on the ground. (A) The height of the protective cover can be easily extended, and appropriate protection of the seedlings can be achieved.

  That is, as long as the height of the seedling is low, it is only necessary to protect the seedling using only the cylindrical body below the protective cover. If the seedling grows and becomes high, the cylindrical body It is only necessary to increase the height of the protective cover. At this time, since the protective cover is in a state of being self-supporting on the ground, it is not necessary to replace the entire apparatus, and the height of the protective cover can be easily extended simply by adding up the cylindrical bodies. .

Moreover, since the said lighting part is provided in the outer peripheral surface of each said cylindrical body, (B) Sunlight can be taken in inside the said protective cover, and it prevents the lack of sunlight, etc. by having installed the said protective cover Can do. In particular, when a net member is used for the daylighting section, air ventilation is improved, so that it is possible to prevent a pest from becoming a hotbed.

And, the flange portion facing outward is provided at the upper end portion and the lower end portion of the cylindrical body at the lowest stage, and the front The support member is inserted into the through holes formed in the flanges, and inserted into the flanges. (C) Even after the protective cover is installed, the support portion can be removed. Since the material can be attached and removed, the position of the protective cover can be easily adjusted after installation. It becomes like this.

In addition, the flange portion facing outward is provided at an upper end portion and a lower end portion of each cylindrical body, and the support portion Material is inserted through the through-holes formed in the upper and lower flanges of each cylindrical body, When the flange is held, (D) when assembling the protective cover, The second and subsequent cylindrical bodies are stacked by inserting the through hole of the flange portion into the support member. If it is made to look up, the support member will serve as a guide, and the cylindrical bodies will be displaced. It is possible to make the work easier because it can be assembled while holding down. The

In addition, if it is set as the structure provided with two or more said support members, (E) the said cylindrical bodies will be connected. The protective cover is assembled and disassembled or the height of the protective cover is adjusted. Can be done easily.

That is, if the protective cover is configured to be self-supporting by a plurality of the supporting members, Each cylindrical body that is in a state in which the through hole of the flange portion is inserted through each support member, This is because the movement in the lateral direction is constrained and does not shift each other. Also, the protection Even when the cover is configured to be self-supporting using a single support member, the support member If the cylindrical bodies are prevented from rotating at the same time, the cylindrical bodies are connected to each other as described above. There is no need. For example, the support member has a rectangular cross-sectional shape and A through hole having a square cross-sectional shape slightly larger than the surface shape is provided in the flange portion. This is because the lateral movement of the cylindrical body can be restricted.

Further, when the apparatus is installed on a seedling planted on an inclined surface as in the seedling damage prevention apparatus according to claim 2, a protective curtain for preventing a gap with the slope is suspended at the lower end of the protective cover. Thus, in addition to the effects (A) to (E) described above , the gap between the protective cover and the inclined surface can be reliably closed regardless of the inclination of the inclined surface.

  Moreover, if the cylindrical body can be divided into a plurality of divided portions in the circumferential direction, as in the seedling damage prevention apparatus according to claim 3, these divided portions are assembled around the seedling as the cylindrical body, Since the seedling can be surrounded, the installation work can be performed more easily. In particular, when the seedling grows and becomes taller and it is necessary to extend the protective cover, the divided parts can be seen from the side of the seedling without having to lift the cylindrical body up the seedling and pass it through the seedling. Since the cylindrical bodies can be piled up by connecting so as to surround the seedlings, the height of the protective cover can be easily extended.

  And like the saprophyllism prevention device of a seedling of Claim 4, as for the above-mentioned division part as what divided the cylindrical body into two in the peripheral direction, the one side end parts of this pair of division parts are hinged. If connected, the pair of divided portions can be formed into the cylindrical body simply by connecting the other side end portions to each other, so that the installation work can be further simplified.

  Then, as in the seedling damage prevention apparatus according to claim 5, a removable cover is provided on the upper surface of the protective cover, and an opening having the same shape as the upper end opening of the protective cover is provided on the cover. A transparent plate-like member, a transparent film, or a net-like member may be attached so as to close the cover. In this way, not only wild animals can not eat seedlings from the upper opening of the protective cover, but also can guide sunlight into the protective cover, so that the seedlings do not run out of sunlight, It will be possible to protect the seedlings more reliably from the damage caused by wild animals.

Further, as in the seedling damage prevention apparatus according to claim 6 , a cylindrical fixture having a C-shaped cross-sectional shape is attached to the support member so as to be held, and the fixture is engaged with the through hole of the flange portion. By stopping, the supporting member is held by the flange portion, and at least either the surface of the supporting member or the inner surface of the fixture can be provided with unevenness to provide a slip stopper. If it carries out like this, it will become difficult to produce slip | swing between the said supporting member and a fixing tool, and it can prevent more reliably that the said supporting member falls out.

According to the measures for preventing damage to seedlings according to the present invention, since appropriate protection according to the growth of seedlings can be achieved, the damage caused by wild animals and the like can be reduced, and it is possible to achieve more reliable forest growth. It becomes. In addition, since the height and position of the protective cover can be easily adjusted, it is possible to save time and labor for caring for seedlings and to reduce the maintenance burden. Furthermore, if the cylindrical body can be divided in the circumferential direction, the protective cover can be easily dismantled, reducing the burden of maintenance such as removing weeds that grow around the seedlings and vines wrapped around the seedlings. Can do.

EMBODIMENT OF THE INVENTION Embodiment of the saprophyllism prevention apparatus of the seedling concerning this invention is described referring 1-7. .

1 feeding damage prevention device of seedlings is shown in 1 '(hereinafter, simply referred to as feeding damage prevention device), by surrounding the seedlings cylindrical protection cover, as wildlife and the like can not touch the seedlings And a protective cover 2 'that can be divided into a plurality of cylindrical bodies 4' in the vertical direction, and a protective cover that protects the seedlings from damage caused by wild animals that eat sprouts, leaves, bark, etc. 2 'is a bar-like support member 3' provided so as to protrude downward from the lower side, and the protective cover 2 'is self-supporting by inserting the support member 3' into the ground G. It has become.

The protective cover 2 'can be divided into a plurality of cylindrical bodies 4' having the same shape in the axial direction. Therefore, while the seedling is low, only the lower cylindrical body 4 'is used to protect the seedling and Accordingly, the cylindrical bodies 4 ′ can be sequentially stacked to extend the protective cover 2 ′. ing.

  Each cylindrical body 4 ′ has a short cylindrical shape, and a flange portion 5a ′ provided with a through hole 5c ′ for a bolt is attached to each of the upper end portion and the lower end portion, thereby forming a cylindrical shape. The body 4 'can be connected with bolts. Each cylindrical body 4 ′ is provided with a daylighting portion 7 ′ by attaching a net-like member to the entire circumference of the side surface so that sunlight can be taken into the protective cover 2 ′.

  The support member 3 'is inserted into a through hole 5c' between the upper and lower flange portions 5a 'of the lowermost cylindrical body 4' and the lower flange portion 5a 'of the second-stage cylindrical body 4'. The lower portion protrudes from the lower side of the cylindrical body 4 ′, and the upper end portion protrudes above the lower flange portion 5a ′ of the second-stage cylindrical body 4 ′. A clip (fixing tool) 14 ′ is attached to the upper side of 5a ′ and the upper side of the lower flange portion 5a ′ of the lowermost tubular body 4 ′, thereby holding the flange portions 5a ′. It has become.

  The clip 14 'is formed in a cylindrical shape, and a cutout portion in the length direction is provided in a part of the outer peripheral wall. The side end portions of the outer peripheral wall located on both sides of this notch are shaped so as to be bent outward and are easy to attach to the support member 3 '. The clip 14 ′ attached to the support member 3 ′ is in a state in which the inner surface of the outer peripheral wall is pressed against the outer peripheral surface of the support member 3 ′, and no slip occurs between the clip 14 ′ and the support member 3 ′ due to these frictional resistances. It is like that.

  This support member 3 'is a thin pipe member whose surface is coated with a synthetic resin such as a vinyl chloride resin. As shown in the enlarged partial view in the figure, a small protrusion is formed on the entire surface. Non-slip is provided. This anti-slip prevents the clip 14 'and the support member 3' from slipping and prevents the support member 3 'from being displaced.

Caps 17a 'and 17b' are attached to the upper end portion and the lower end portion of the support member 3 'so that rainwater and soil do not enter the pipe member. The cap 17b 'at the lower end has a sharpened tip, so that the support member 3' can be easily inserted into the ground G, and the cap 17a 'at the upper end has a shape with a rounded upper portion. Wild animals are not damaged.

The cylindrical body 4 ′ above the second stage is connected by bolt fastening, and the seedling P can be more reliably prevented from being damaged by wild animals or the like on the upper flange 5a ′ of the uppermost cylindrical body 4 ′. In order to protect the disk, a disc-shaped lid 10 ′ in which an opening formed in the central portion is closed with a net member 10 b ′ is attached.

The lid 10 'is a disc-shaped member having the same diameter as that of the upper flange portion 5a' of the cylindrical body 4 '. A hole is formed in the main body 10a 'having a hole of the same size as the opening of the upper surface of the cylindrical body 4' at the center of the material. A net-like member 10b 'is attached so as to be closed. The main body 10a 'has a tube A mounting hole is provided at a position corresponding to the through hole 5c 'of the upper flange portion 5a' of the body 4 '. After the bolt 11 ′ is passed through the mounting hole and the through hole 5 c ′, the nut is attached to the bolt 11 ′. Are screwed together so that the lid 10 ′ is attached to the cylindrical body 4 ′. Net member 1 Instead of 0b ', a transparent synthetic resin plate or a transparent film can also be used. It is preferable to provide a small hole for ventilation.

  Such an anti-corrosion device 1 ′ can attach the support member 3 ′ after the lowermost cylindrical body 4 ′ is placed on the ground G, so that the lowermost cylindrical body 4 ′ can be aligned. It becomes easy.

Further, as shown in FIG. 2 , the support member 3 ′ is replaced with a longer one, and the support member 3 ′ is inserted into the through hole 5 c ′ of the upper and lower flange portions 5 a ′ of each cylindrical body 4 ′. Thus, the cylindrical body 4 ′ can be stacked. By doing so, it is possible to restrain the lateral movement of the respective cylindrical bodies 4 ′, and there is no deviation between the cylindrical bodies 4 ′. Therefore, it is necessary to provide connection means for the cylindrical bodies 4 ′. The assembly / disassembly work can be simplified.

  Further, the lid 10 'is also placed on the tubular body 4' in a state where the mounting hole is inserted into the upper end portion of the support member 3 'protruding above the uppermost tubular body 4'. Thus, if the clip 14 'is attached to the upper side of the lid 10' of the support member 3 'and the lower side of the upper flange portion 5a' of the lowermost cylindrical body 4 ', the damage prevention device 1' Since the assembly / disassembly can be performed without using a tool, the assembly / disassembly work of the anti-corrosion device 1 ′ can be further simplified.

The cylindrical body has two identical shapes in the circumferential direction as shown in FIG. It can be possible to divide into two division parts 5. These division parts 5 are arcuate in a semicircle in plan view. The upper and lower flange portions 5a formed on the upper and lower end portions are vertically long at both end portions. Are substantially rectangular lateral flange portions 5b, and upper end portions of the respective lateral flange portions 5b. And the lower end are connected to the ends of the upper and lower flange portions 5a. Upper and lower flange 5 Two through holes 5c for connection are formed in each a and each lateral flange portion 5b.

And the board which has fixed height along the edge part of an inner peripheral side in the upper surface part of the lower flange part 5a The lower mounting piece 5d is erected, and the upper mounting piece 5d having the same shape as the lower mounting piece 5d It is provided in the lower surface part of the upper flange part 5a so that it may become symmetrical. Also, each horizontal flange 5b, on the side surface facing the region sandwiched between the upper and lower flange portions 5a, A plate-like horizontal mounting piece 5d formed in a vertically long rectangular shape divides the width direction along the side edge. It is provided along the circumferential direction of the part 5.

Then, each of the upper and lower mounting pieces 5d and the lateral mounting pieces 5d on both sides has a laterally long surface. A lighting part 7 is provided on the side surface of the dividing part 5 by fixing each edge part of the square net member. ing. The net size of this net member is large enough to prevent small animals such as mice from entering. Larger meshes are used as much as possible. In this way, the mesh is as large as possible By using a net member, the protective cover 2 can be installed while preventing animal damage. It prevents the lack of sunshine and the loss of air permeability, and prevents it from becoming a hotbed for lack of growth and pests. It is.

In addition, the upper and lower flange portions 5a and the horizontal flange portions 5b of the divided portion 5 and the upper and lower mounting pieces 5d The horizontal mounting pieces 5d on both sides can be made of hard synthetic resin, and can be made of steel or stainless steel. However, the net member can be a resin net or a wire net.

The dividing part 5 is formed by attaching the horizontal flange parts 5b on both sides to each other and each horizontal flange part 5b. By passing the bolts through the through holes 5c and then screwing the nuts, 5b is fastened to make the cylindrical body 4.

As shown in FIG. 4, the cylindrical bodies 4 are connected to each other when the cylindrical body 4 is in the lower stage. The other two divided parts 5 are bolted to the lateral flange parts 5b on both sides to form a cylindrical body 4. The through hole 5c of the lower flange portion 5a of the divided portion 5 constituting the cylindrical body 4 is formed in the lower cylindrical shape. Bolts after matching the through holes 5c of the upper flange portion 5a of the divided portion 5 constituting the body 4 The lower flange portion 5a of the upper and lower divided portion 5 is obtained by screwing a nut into the bolt. And the upper flange 5a is bolted to connect the upper cylindrical body 4 and the lower cylindrical body 4 together. Conclude.

In this way, the cylindrical body 4 is moved in order until the protective cover 2 'is at an appropriate height with respect to the seedling. Next, stack up. In addition, when the height of the seedling is low, the dividing part 5 is made into the cylindrical body 4 in advance. It may be assembled after it is placed.

And when using it for a comparatively high seedling, each division | segmentation part 5 is seedlings from the side of a seedling. So that the side flanges 5b are aligned with each other, and the side flanges 5b If the split part 5 is the cylindrical body 4 by fastening the bolt, the cylindrical body 4 is held up to the seedling. Since there is no need to raise it, it is possible to easily install an anti-corrosion device.

Also, when the seedlings grow and become taller, the cylindrical body 4 is added by the above procedure. Since the height of the protective cover 2 'can be easily increased, there is no need to replace the entire device. Appropriate seedlings can be protected with light work.

In addition, it is not restricted to the said procedure, For example, the upper and lower division parts 5 were connected beforehand. In addition, each of the horizontal flanges 5b can be bolted to form a tubular body 4. The

Also, instead of the net member attached to the divided part, a transparent synthetic resin sheet-like part A material, a plate-like member, or the like can also be used. When using sheet-like members or plate-like members In order to improve air permeability, it is preferable to provide a plurality of small-diameter vent holes in the sheet-like member. Good.

The cylindrical body 4 shown in FIG. 3 is bolted to the two divided portions 5 and the lateral flange portions 5b on both sides. As shown in Fig. 1, the flanges 5b on one side end are connected to each other. It is good also as a structure which can connect with the hinge 9 beforehand and can open and close the cylindrical body 4 in a horizontal direction. in this case The flange portion 5b connected by the hinge 9 is not provided with a through hole, and the flange portion 5b on the opposite side is not provided. By providing the through hole 5c only in the flange portion 5b on the opposite side of the hinge of each divided portion 5 Since the tubular body 4 can be obtained by fastening the wings with bolts, the assembly of the protective cover 2 is simplified. Can be

In FIG. 3 and FIG. 5, the side flange portions 5b provided with a pair of divided portions 5 at each side end portion are bolted. Although it is assembled into the cylindrical body 4 by fastening, it is naturally not limited to this. If the split portion 5 is structured as shown in FIG. 6, the cylindrical body 4 can be assembled and disassembled without using a tool. You will be able to The division part 5 shown in FIG. 6 is a short cylinder instead of the horizontal flange part 5b. The joint portion 12 having a pin receiving portion 12a is attached to both end portions at predetermined intervals. The joint portions 12 at the side end portions of the opposed divided portions 5 are staggered in position. It is installed as such. Each joint portion 12 is provided on a side surface portion of a short cylindrical pin receiving portion 12a. One end of a plate-like support 12b arranged vertically is attached to the support 1 By joining the other side end portion of 2b to the side end portion of the horizontal mounting piece 5d of the split portion 5, the split portion 5 is attached.

Such a pair of divided portions 5 are arranged so that the side end portions face each other, and each joint portion 12 in which the positions of the holes of the pin receiving portions 12a are aligned and slightly longer than the vertical length of the dividing portion 5. The tip of the pin 13 that is made shorter is inserted into the hole of the pin receiving portion 12a of the uppermost joint portion 12. After insertion, the pins 13 are lowered and sequentially penetrated into the holes of the pin receiving portions 12a of the joint portions 12. To connect.

The anti-corrosion device according to the present invention includes a lower cylindrical body and an upper cylindrical body. The size of the net of the net member in the daylighting unit may be changed. In other words, Since the cylindrical net member is not necessary to enter the mouth of a large animal such as a deer, A large net is used, and the cylindrical net member on the bottom is a small animal such as a mouse or rabbit. Keep your eyes small to prevent your eyes from entering your protective cover or your mouth It is.

Although not shown, the above-described damage prevention apparatus 1 'is used for seedlings planted on an inclined land. In this case, if the trough-side support member 3 ′ is made longer than the crest-side support member 3 ′, the protective cover 2 ′ is obtained. Can become independent in a more stable state. And at the lower end of the protective cover 2 ' If a protective screen is installed to close the gap between the mouse and the mouse, it can prevent the invasion of small animals such as mice. You can also.

This protective curtain has a central part of a circular cloth material with a relatively large mesh, which is as large as the inner diameter of the cylindrical body. It is cut out into a circular shape having a diameter of the diameter, and the inner peripheral edge portion has a through hole of the lower flange portion 5a. A through hole is provided at a position corresponding to 5c and corresponds to the horizontal flange portion 5b. A cut is provided at each position (in the case of the cylindrical body 4 in FIG. 3). And this The inner flange is overlapped on the lower flange portion 5a of the cylindrical body 4, and the lower flange portion Place the holding member with the same shape as 5a on the top and place the inner peripheral edge of the protective curtain on the lower flange The part 5 a and the pressing member are sandwiched and fixed, and are hung from the lower end of the cylindrical body 4. Na If you make a cut across the entire width along the radial direction in a part of the protective screen, the height of the seedling Even if it is high, it can be easily installed.

Then, the lower end of the protective curtain is filled with underground or the like, so that it can be tilted with the protective cover 2 '. A gap with the inclined ground G can be closed. Since cloth is used for the protective curtain, Even when the anti-corrosion device 1 'is installed on the slope with such a slope, the clearance between the protective cover 2' and the slope is secured. It can be really blocked.

Further , instead of the clip 14 ′, a fixture 15 ′ as shown in 7 (a) and (b) can be used. The fixing tool 15 ′ extends the upper end portion of the cylindrical main body portion 15a ′ in the radial direction to form a locking portion 15b ′. The outer diameter of the outer peripheral surface of the main body portion 15a ′ is at the lower end. A taper is provided so as to gradually become smaller. A notch 15c ′ is provided by completely removing one side portion of the fixture 15 ′ with a predetermined width in the length direction, and can be attached from the side of the support member 3 ′.

  After fixing the fixing portion 15 ′ so as to embrace the support member 3 ′, the locking portion 15b ′ is pressed from above, and the main body portion 15a ′ is inserted into the gap between the support member 3 ′ and the through hole 5c ′. . Then, since the outer peripheral surface of the main body portion 15a 'is tapered, it stops at a position corresponding to the size of the gap, and the support member 3' can be fixed to the upper and lower flange portions 5a '. The vertical displacement of the support member 3 ′ can be prevented by the frictional resistance between the inner peripheral surface of the main body 15 a ′ and the outer peripheral surface of the support member 3 ′. Furthermore, the play of the cylindrical body 4 ′ due to the gap between the through hole 5 c ′ and the support member 3 ′ can be suppressed.

Further, as shown in FIG. 7C , a screw portion 3a ′ is formed on the upper outer peripheral surface of the support member 3 ′, and two nuts 16 ′ screwed to the screw portion 3a ′ are used to form the uppermost stage. The support member 3 ′ may be held between the upper flange portion 5a ′ and the lid 10 ′ by sandwiching the upper flange portion 5a ′ and the lid 10 ′ of the cylindrical body 4 ′.

It is a perspective view which shows embodiment of the seedling feeding prevention apparatus concerning this invention. It is a perspective view which shows another embodiment of the feeding damage prevention apparatus of the seedling concerning this invention. It is a perspective view which shows a cylindrical body, and has shown the state which divided | segmented the cylindrical body into the division part. It is explanatory drawing which shows an example of the assembly procedure of the cylindrical body of a corrosion prevention apparatus. It is a perspective view which shows another embodiment of a cylindrical body. It is a perspective view which shows another embodiment of a cylindrical body. (A) and (b) are different fixtures for the device for preventing damage to seedlings shown in FIGS. It is the perspective view which shows embodiment, and sectional drawing which shows an attachment state. (C) is another method of removing the support member It is a perspective view which shows the state currently hold | maintained at the holding | maintenance part using.

Explanation of symbols

1 'Corrosion prevention device
2 'protective cover
3 'Support member
4 '・ 4 Tubular body 5 Dividing part
7 'Daylighting Section 9 Hinge P Naegi

Claims (6)

It is a seedling damage prevention device that protects a seedling from animal damage by surrounding the seedling with a cylindrical protective cover provided with a daylighting portion on the outer peripheral surface,
The protective cover can be divided into a plurality of cylindrical bodies in the vertical direction, the daylighting portion is provided on the outer peripheral surface of each cylindrical body, and a supporting member is provided downward at the lower end portion of the protective cover. In the apparatus for preventing damage to seedlings, which protrudes and makes the protective cover self-supporting by inserting the support member into the ground ,
A penetrating hole is provided at the upper and lower ends of the lowermost cylindrical body or the upper and lower ends of each cylindrical body, and the support member is formed in each flange. An apparatus for preventing damage to seedlings, wherein the apparatus is inserted into a hole and is detachably held by the flange portion. An apparatus for preventing damage to seedlings planted on slopes,
A protective curtain is installed at the lower end of the protective cover to close the gap between the slope and the slope. The apparatus for preventing damage to seedlings according to claim 1.   3. The seedling feeding damage according to claim 1, wherein the cylindrical body can be divided into a plurality of divided portions in the circumferential direction, and the daylighting portion is provided on a side surface of the divided portions. Prevention device.   The seedling according to claim 3, wherein the divided portion is obtained by dividing the cylindrical body into two in the circumferential direction, and one end portions of the pair of divided portions are connected by a hinge. Anti-corrosion device.   A removable cover is provided on the upper surface of the protective cover, and the cover is provided with an opening having the same shape as the upper end opening of the protective cover. The apparatus for preventing damage to seedlings according to any one of claims 1 to 4, wherein a transparent film or a net-like member is attached. A cylindrical fixture having a C-shaped cross-sectional shape is attached to the support member so as to be held, and the fixture is held in the flange portion by locking the fixture in the through hole of the flange portion. and then, either inside surface of at least the surface of the support member, or fixture, No placing serial to claim 1, characterized in that is provided a slip to form irregularities Sapling damage prevention device.

Images