JP5408568B2 - Net for trees - Google Patents

Description

  The present invention relates to an improvement of a tree net for preventing damage to trees and their fruits by insects and birds.

  It is known that plums, the raw material for dried plums, are damaged by poppy seeds such as red-breasted poppy. Specifically, red larvae lay eggs on plum fruits (especially fully-ripened plum fruits), and larvae eat into plum fruits, so larvae are attached to plum fruits. As one of methods for preventing such damage caused by poppy seeds, for example, there is a “plum nut insecticide method” described in Patent Document 1 below. This is to immerse the harvested plum fruit in water for 30 minutes to 2 hours, and then raise the plum fruit after waiting for the poppy larvae to come out in the water.

  Other methods include increasing the number of plums harvested to multiple times a day, and spreading control agents such as tefluthrin granules, force granules, and barriered granules on the ground. These methods are used in combination with the method described in Patent Document 1.

JP 2009-60816 A

  However, in the method described in Patent Document 1 described above, it is not always possible to remove 100% larvae due to the time for soaking the plum fruit in water, the amount of plum fruit, the amount of water, and other reasons. . In addition, the work requires a lot of labor, and the burden on the farmer is large. In addition, larvae that have died in the plums cannot be removed. Furthermore, even if a larva appears, the commercial value of the plum fruit once the larva is attached will inevitably decrease.

  In addition, increasing the number of harvests of ume fruits has the disadvantage of excessively increasing the burden on farm work, and the use of chemicals may cause health damage depending on the amount used.

  The present invention pays attention to the above points, and its purpose is to effectively prevent damage caused by pests such as poppy seeds while reducing the burden on farm work and preventing health damage. Another objective is to give trees a greenhouse effect and accelerate fruit ripening.

  The present invention is a tree net for preventing damage to a tree or a fruit thereof, wherein the tree is covered from above and from the side at an interval necessary to prevent damage to the tree or the fruit. A protection part for receiving the fruit dropped from the tree, and a second protection part for preventing damage to the fruit received by the receiving part.

  One of the main forms is characterized in that a sheet is used for a part of the first protective part and a net or a sheet is used for all or a part of the receiving part or the second protective part. . Further, all or a part of the first protective part, the receiving part, or the second protective part is detachable or replaceable. Further, the first protection part is supported by a pillar standing on the ground, and at least one of the receiving part or the second protection part is supported by a hook that hooks on a branch of the tree. Features.

One of the other forms is characterized in that at least one openable / closable opening is provided in the first protective part, the receiving part, or the second protective part. Alternatively, the receiving portion and the second protective part, characterized in that a drainage means through rainwater. The main form is characterized in that the tree is a plum tree, the fruit is a plum fruit, and the damage is damage caused by poppy seeds. The above and other objects, features and advantages of the present invention will become apparent from the following detailed description and the accompanying drawings.

According to the present invention, the tree is covered with the first protection part, and the second protection part is provided in the receiving part for receiving the falling fruit, so that the following effects can be obtained.
(1) A protective effect can be obtained well not only for fruits that are trees, but also for fruits that have fallen.
(2) Not only egg laying by adults but also damage caused by feeding larvae can be prevented.
(3) In particular, it is possible to suppress the use of chemicals against poppy seeds and there is no risk of health damage.
(4) The burden on farm work can be reduced.

It is a figure which shows Example 1 of this invention. (A) is a diagram showing the whole, and (B) and (C) are diagrams showing an enlarged main part. It is the figure seen from the plane of the said Example 1. FIG. (A) shows a case where Umenoki is arranged in series, and (B) shows a case where Umenoki is grouped adjacent to each other. It is a figure which shows Example 2 of this invention. (A) is an example in which the top is formed into a sheet, (B) is an example in which the side is also formed into a sheet, and (C) is an example in which the top is alternately formed into a net and a sheet. It is a figure which shows Example 3 of this invention. (A) is an example in which a double net structure is provided in a substantially horizontal direction around the lower sheet, (B) is an example in which a double net structure is provided in a substantially vertical direction around the lower sheet, (C) is An example in which a hole for draining is provided in the lower sheet, and (D) and (E) are examples of another double net structure. It is a figure which shows Example 4 of this invention. (A) and (B) are examples in which the lower part of the protective net is in the form of a sheet, and (C) is an example in which an opening by a fastener is provided.

  Hereinafter, the best mode for carrying out the present invention will be described in detail based on examples.

  FIG. 1A shows the overall configuration of the first embodiment of the present invention, and FIG. 1B shows an enlarged main part. In these figures, a central support column 20 is erected on the ground in the vicinity of the main trunk 12 of the plum tree 10, and a plurality of outer edge columns 22 are provided at appropriate intervals on the outside of the adjacent plurality of plum trees 10. It has been. The center column 20 is set so that the tip thereof is higher than the height of the plum tree 10. In addition, you may make it provide the center support | pillar 20 between the plum tree 10 and the plum tree 10.

  The upper protective net 30 is laid between the central support column 20 and the outer edge support column 22 so as to cover the plum tree 10. At this time, the number, height, and spacing of the support columns 20 and 22 and the tension of the upper protection net 30 are adjusted so that an appropriate distance is provided between the upper protection net 30 and the branches and leaves of the plum tree 10. A receiving net 34 is suspended from the branch 14 by a large number of ring-shaped or inverted L-shaped hooks 32 below the plum tree 10. The edge of the receiving net 34 is joined to the edge of the upper protective net 30 described above in the vicinity of the outer edge column 22.

  FIG. 2 shows a state viewed from above. FIG. 4A shows a case where three plum trees 10 are arranged in series, and FIG. 4B shows a case where three plum trees 10 are adjacent to each other. Of course, you may change suitably the number of the plum tree 10 accommodated in a net | network, the area of the upper protection net | network 30, and installation shape. Further, the outer edge column 22 may be provided outside the upper protective net 30.

  By the way, in the present invention, another bottom protective net 36 is provided at an appropriate interval below the receiving net 34 below the plum tree 10 described above. The edge of the bottom protective net 36 is joined to the edge of the upper protective net 30 or the receiving net 34 described above in the vicinity of the outer edge column 22. If necessary, auxiliary struts 24 may be provided as appropriate to support the receiving net 34 and the bottom protective net 36. Further, a plurality of arms or beams 26 may be provided in the horizontal direction at the tip of the central support column 20, and the upper protective net 30 may be supported by the beams 26. At this time, a plurality of beams 26 may be provided on the central column 20 so as to be freely opened and closed just like an umbrella bone.

  Here, the receiving net 34 is suspended from the branch 14 of the plum tree 10 by a hook 32. On the other hand, the bottom side protection net 36 hangs downward due to its own weight. Therefore, an appropriate distance D is formed between the receiving net 34 and the bottom protective net 36. Note that the distance D does not need to be uniform throughout the bottom protective net 36, and may be any distance that can prevent spawning by pests on the dropped plum fruit 16 as will be described later.

  The size of the upper protective net 30, the receiving net 34, and the bottom protective net 36 is set in accordance with the size of the pests to be protected. If it is a poppy, it should be sized so that its adults and larvae cannot pass through the mesh.

  If necessary, a trunk protection sheet 40 is wound between the main trunk 12 of the plum tree 10 and the receiving net 34 and the bottom protection net 36. At this time, the end of the receiving net 34 and the bottom side protective net 36 may be fixed to the main trunk 12 of the plum tree 10 using the trunk protective sheet 40. As a result, it is possible to eliminate pests and the like, especially poppy larvae that try to enter the net through the main trunk 12. A similar protective sheet may be provided on the central column 20, the outer edge column 22, and the auxiliary column 24.

  Next, the overall operation of this embodiment will be described. As described above, the upper and side portions of the plum tree 10 are covered with the upper protective net 30 at an appropriate interval. For this reason, even if pests such as poppy seeds try to lay the plum fruit 16 from the top or side of the plum tree 10, there is a distance between the plum fruit 16 and the larva is There is no fear of fruit 16 (especially fully-ripened plum fruit). Invasion of larvae such as poppy mosquitoes into the net is prevented, and damage caused by eating is also prevented. The same applies to the lower part of the plum tree 10.

  On the other hand, when attention is focused on the lower part of the plum tree 10, the plum 16 of the plum tree 10 falls on the receiving net 34. Without the bottom protective net 36, pests such as poppy moths may spawn on the plums 16 from the mesh of the receiving net 34. However, in the present invention, the bottom protective net 36 is provided at an appropriate interval D with respect to the receiving net 34. For this reason, even if pests such as poppy seeds try to lay eggs on the plums 16 of the receiving net 34, they are not able to lay eggs due to the distance from the plums 16, and the larvae attach to the plums 16. There is no fear. FIG. 1 (C) shows this state, and even if the pest 49 tries to lay eggs on the plum fruit 16, it is well prevented by the distance D between the receiving net 34 and the protective net 36. In addition, the fruit 16 which has fallen from the plum tree 10 can be easily collected by providing the receiving net 34 with an inclination, for example. That is, the receiving net 34 can be used as a harvesting net. In addition, since the receiving net 34 and the bottom protective net 36 are both meshed, there is no inconvenience such as rainwater collecting.

  Furthermore, since the plum tree 10 is covered as a whole by the upper protection net 30, the receiving net 34, and the bottom protection net 36, the temperature inside the net rises somewhat. The smaller the mesh, the greater the rise. When the temperature rises, the grade of plum fruit 16 will also rise, and you can get better quality plum fruit. In addition, when the wind blows, the plum fruit 16 falls from the plum tree 10, but the influence of the wind is reduced, the fall of the plum fruit 16 is delayed, and the degree of ripeness increases. become. From this point of view, an improvement in the grade of plum fruit 16 can be expected. Further, since no medicine for poppy squishy is used or the amount used can be reduced, health damage can also be prevented. In addition, since it is not necessary to increase the number of harvests of plum fruit 16, the burden on farm work is reduced.

  In addition, a spacer is provided between the receiving net 34 and the bottom protective net 36, a weight is attached to the bottom protective net 36, and the bottom protective net 36 itself is made of a heavy material. The distance D between the stop net 34 and the bottom protective net 36 can be reliably ensured.

  Next, Embodiment 2 of the present invention will be described with reference to FIG. The example of FIG. 5A is configured by a resin-made sheet portion 52 having a transparent top portion around the central support column 20 of the upper protective net 50 and a lower net portion 54. The seat portion 52 is exchangeable or detachable with respect to the net portion 54 by, for example, a fastener (including a hook-and-loop fastener) 56, but may of course be integrated. In this way, by forming a part of the protection net 50 into a sheet shape without forming a mesh shape, the degree of temperature rise in the protection net 50 increases. For this reason, the degree of ripeness of the plum fruit 16 becomes higher, or comes to be matured earlier than before, so that the harvesting period can be advanced. If the harvesting period can be made earlier than the period when damage caused by pests and harmful birds occurs, the damage can be suppressed as a whole. Further, since the fastener 56 is used, the entire upper protective net 50 as in the embodiment of FIG. 1 can be formed in a mesh shape by replacing the seat portion 52 with a net.

  The example of FIG. 3B is an example in which the upper protection net 60 is configured by a seat portion 62, a net portion 64, and a seat portion 66, and is detachable or replaceable by fasteners 70 and 72. In particular, by using the side surface of the plum tree 10 as the seat portion 66, the influence of wind can be reduced.

  The above embodiment is an example in which a part is a sheet in the vertical direction, but a part may be a sheet in a plane as in the example of FIG. In the illustrated case, the entire upper protective net 80 has a cylindrical shape, and has a configuration in which fan-shaped net portions 82 and sheet portions 84 are alternately arranged at the top portion. The net part 82 and the sheet part 84 are joined by a fastener 86, and the net part 82, the sheet part 84, and the side net part 88 are joined by a fastener 90. Of course, the side surface portion of the upper protection net 80 may be constituted by a net portion and a seat portion.

  Further, FIGS. 3A to 3B and FIG. 3C may be combined. For example, in an environment where the wind blows against the plum tree 10 from one side, the influence of the wind can be greatly reduced by blocking the wind with the direction as the seat portion. Similarly, a part of the receiving net 34 and the bottom protective net 36 may be a sheet, and may be detachable or replaceable using a fastener.

  Next, Embodiment 3 of the present invention will be described with reference to FIG. In this embodiment, the lower part of the protective net is not a mesh but a sheet. In the example of FIG. 5A, a bottom protective sheet 102 is provided at the lower part of the upper protective net 100, and the main support 12 is provided near the main trunk 12 of the plum tree 10, the main trunk 12 side is high, and the tip side of the branch 14 is low. Is set to Further, the receiving net 104 and the bottom protective net 106 are arranged at appropriate intervals on the outer edge side of the bottom protective sheet 102. For this reason, the dropped plum fruit 16 is stored on the receiving net portion 104, and egg-laying by the pest 49 is prevented by the bottom protective net portion 106. In the present embodiment, the side surface of the upper protective net 100 is the side protective sheet portion 108, but it may be a net.

  In the example of FIG. 4B, similarly, a bottom protective sheet 112 is provided at the lower part of the upper protective net 110, and a receiving net part 114 and a side protective net are disposed vertically to the end of the bottom protective sheet 112. The parts 116 are arranged with appropriate intervals. FIG. 4A is an example in which a double net portion is provided in the horizontal direction at the end of the bottom protective sheet 102, and FIG. 4B is a diagram showing a double net portion of the bottom protective sheet 112. It can be considered that this is an example in which the end portion is provided in the vertical direction, but it can also be considered that a double net portion is provided on the side protection sheet portion 118.

  The example of FIG. 4 (C) is a modification of FIG. 4 (B) and corresponds to the case where the bottom side protection sheet 112 cannot be stretched so that the main trunk 12 side is high and the tip end side of the branch 14 is low. is there. In this example, the bottom protective sheet 112 is provided with a number of drain holes 113 at appropriate intervals. Also, a bottom side protection net portion 115 is provided below the bottom side protection sheet 112. The structure of the end portion of the bottom protective sheet 112 is the same as the example of FIG. According to this example, even if the bottom side protection sheet 112 is slackened, and the plum fruit 16 is accumulated in that portion, the rainwater is discharged from the drain hole 113. Moreover, since there is the bottom side protection net part 115, the egg-laying by the pest 49 is prevented well. In addition, the bottom side protection net part 115 may be in contact with the ground. Further, the bottom protection net part 115 and the side protection net part 116 may be integrated.

  In the example of FIG. 4D, a receiving net portion 124 is formed on the extension of the bottom protective sheet 122 provided at the lower portion of the upper protective net 120, and the upper side so as to cover the receiving net portion 124. Side protection sheet portions 126 and 128 of the protection net 120 are bent and provided. A protective net portion 130 is formed in an opening formed between the bottom protective sheet 122 and the side protective sheet portion 128. The plum fruit 16 gathers in the receiving net part 124, and rainwater falls from the receiving net part 124 and the protective net part 130 as shown by the arrows. Also in this example, since there is a distance between the receiving net part 124 and the protective net part 130, pests such as poppy moths cannot lay eggs, and there is no fear that the larvae will get on the plum fruit 16.

  FIG. 4E is a modification of FIG. 4D, in which the receiving net portion 144 bends upward on the extension of the bottom protective sheet 142 provided in the lower part of the upper protective net 140. Is formed. On the other hand, the side protection sheet portion 146 extends downward, and a protection net portion 148 is formed at the tip of the side protection sheet portion 146 so as to cover the receiving net portion 144. Plum seed 16 gathers in the receiving net part 144, and rainwater falls from the receiving net part 144 and the protective net part 148 as shown by the arrows.

  In addition, the site | part which accumulates the berry 16 may be provided in the perimeter of the edge part of a bottom side protection net | network or a bottom side protection sheet, and is good also as one place or multiple places. Moreover, you may make it provide near the center instead of an edge part. Depending on how the net and seat are adjusted, the plum fruit 16 gathers at the lowest position, so that the location should be a receiving net and a protective net should be provided at a distance that can prevent spawning by pests. . According to this example, since the lower part of the net for trees can be formed into a sheet shape, the strength can be improved. In addition, the effects of weeds that grow from the ground can be reduced.

  Next, Embodiment 4 of the present invention will be described with reference to FIG. The example of FIG. 5A is an example in which a number of drain holes 154 are provided in the bottom side protection sheet 152 at the bottom of the protection net 150 and are brought close to or in contact with the ground surface 156. Such a configuration may be used when the dropped plum fruit 16 is discarded without being used.

  In the example of FIG. 5B, the bottom protection sheet 162 at the bottom of the protection net 160 is grounded or brought into contact with the ground 156, and a drainage net portion 164 is provided around the bottom protection sheet 162. A side protection net portion 166 is provided outside the drainage net portion 164. This example is suitable for the case where the ground 156 at the main trunk 12 of the plum tree 10 is raised more than the surroundings, and rainwater is drained from the draining net portion 164 around the bottom protective sheet 162. Further, the side protection net portion 166 prevents pest damage in the vicinity of the drainage net portion 164.

  The example of FIG. 5C is an example in which an opening for disinfection or the like is provided in the first embodiment. A reinforcing part 200 is formed in the protective net 30 so that the net is not broken, and an opening 202 that can be opened and closed by a zipper, a hook-and-loop fastener or the like is formed near the center of the reinforcing part 200. A plurality of such openings 202 may be provided as necessary. Further, it may be provided on the lower receiving net 34 or the bottom protective net 36. In particular, the openings 202 provided in the receiving net 34 and the bottom protective net 36 can be used for harvesting the plum 16. The same applies to the other embodiments, and it may be provided in the seat portion. Moreover, you may make it provide the opening which can be opened and closed so that an operator can enter in a net | network.

In addition, this invention is not limited to the Example mentioned above, A various change can be added in the range which does not deviate from the summary of this invention, such as a combination of the said Example. For example, the following are also included.
(1) The net installation methods shown in the above embodiments are merely examples, and various known methods may be used. Various known shapes and structures such as a net, a sheet, and a support may be applied.
(2) Pests or the like may be positively excluded by applying or containing an insect repellent or bird repellent to the net, sheet, or support.
(3) In the above embodiments, the double net structure is used, but the size of the mesh may be different between the two. For example, the catch net part that receives the fruit of the inner plum may be as long as the fruit of the plum does not fall, and the outer protective net part only needs to be able to prevent the invasion of pests. Nets include those with holes in the sheet for rainwater to pass through.
(4) A preferred example of the present invention is prevention of damage by poppy seeds on plum fruits, but it does not preclude application to damage prevention by other pests and harmful birds.

  According to the present invention, the entire tree is protected by a net or sheet, and the receiving part of the fallen fruit has a double net structure, so that not only the fruit that is the tree but also the fallen fruit However, the protective effect can be obtained satisfactorily, and it is suitable for the prevention of damage by poppy seeds on fruit trees in general, especially plum fruits.

10: Umenoki 12: Main trunk 14: Branch 16: Plum seed 20: Central post 22: Outer post 24: Auxiliary post 26: Beam 30: Upper protective net 32: Hook 34: Receiving net 36: Bottom protective net 40: Protective sheet for trunk 49: Pest 50: Upper protective net 52: Seat part 54: Net part 56: Fastener 60: Upper protective net 62: Seat part 64: Net part 66: Seat part 70, 72: Fastener 80: Upper protective net 82: Net part 84: Seat part 86: Fastener 88: Net part 90: Fastener 100: Upper protective net 102: Bottom protective sheet 104: Receiving net part 106: Bottom protective net part 108: Side protective sheet part 110: Upper protective net 112: Bottom protective sheet 113: Hole 114: Receiving net part 115: Bottom protective net part 116: Side protective net Part 118: side protection sheet part 120: upper protection net 122: bottom protection sheet 124: receiving net part 130: protection net part 126, 128: side protection sheet part 140: upper protection net 142: bottom protection sheet 144: receiving Stop net part 146: Side sheet part 148: Protection net part 150: Protection net 152: Bottom side protection sheet 154: Hole 156: Ground 160: Protection net 162: Bottom side protection sheet 164: Drain net part 166: Side protection net part 200: reinforcement part 202: opening D: interval

Claims (7)

A net for trees to prevent damage to trees and their fruits,
A first protective part that covers the tree from above and from the side at an interval necessary to prevent damage to the tree or its fruit;
A receiving part for receiving the fruit dropped from the tree;
A second protective part for preventing damage to the fruit received by the receiving part;
A net for trees characterized by comprising   The tree net according to claim 1, wherein a sheet is used for a part of the first protection part, and a net or a sheet is used for all or a part of the receiving part or the second protection part. .   The tree net according to claim 2, wherein all or a part of the first protection part, the receiving part, or the second protection part is detachable or replaceable.   The first protection part is supported by a pillar standing on the ground, and at least one of the receiving part or the second protection part is supported by a hook that hooks onto a branch of the tree. The net for trees according to any one of claims 1 to 3.   The tree net according to any one of claims 1 to 4, wherein at least one openable / closable opening is provided in the first protective part, the receiving part, or the second protective part. .   The net for trees according to any one of claims 1 to 5, wherein a drainage means for allowing rainwater to pass through is provided in the receiving part or the second protection part. The net for trees according to any one of claims 1 to 6 , wherein the tree is a plum tree, the fruit is a plum fruit, and the damage is a damage caused by poppy seeds.

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