JPH0368651B2 - - Google Patents
Info
- Publication number
- JPH0368651B2 JPH0368651B2 JP59229010A JP22901084A JPH0368651B2 JP H0368651 B2 JPH0368651 B2 JP H0368651B2 JP 59229010 A JP59229010 A JP 59229010A JP 22901084 A JP22901084 A JP 22901084A JP H0368651 B2 JPH0368651 B2 JP H0368651B2
- Authority
- JP
- Japan
- Prior art keywords
- metal lath
- tree
- protection
- corrosion
- period
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Protection Of Plants (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、果樹木の樹幹部等を野生小動物のか
じりから防護するために用いられるメタルラスに
関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a metal lath used to protect the trunks of fruit trees from being gnawed by small wild animals.
リンゴや桃等の果樹木、特にそれらの幼木は、
積雪期において野うさぎや野ねずみ等の小動物に
樹がかじられる被害を受け、その対策が大きな問
題となつている。従来、この対策として合成樹脂
の防護網を樹幹部に巻付ける方法が採られている
が、この防護網は春先には取外す必要があり、そ
の取外し作業に大きな手間がかかる難点があり、
実用的な方法とは言い難い。
Fruit trees such as apples and peaches, especially their young trees,
Trees are damaged by small animals such as wild rabbits and field mice during the snowy season, and countermeasures have become a major problem. Conventionally, the method of dealing with this problem has been to wrap a synthetic resin protective net around the trunk of the tree, but this protective net has to be removed in early spring, and the problem is that it takes a lot of time and effort to remove it.
This is hardly a practical method.
本発明者等はこのよう事情に鑑み、樹幹部等に
巻付けて使用する防護材として極薄鋼板を素材と
するメタルラスを用い、その腐食を利用して取外
しの手間を省くという新たな方式を案出した。極
薄鋼板を素材とするメタルラスは、樹木の幹や枝
等に簡単に巻き付けることができ、しかも、その
物理的な遮蔽作用による防護効果のみならず、メ
タルラス特有の構造、すなわち各線状部の捩じれ
により小動物に対し優れた防護効果を得ることが
できる。しかし、このような方式を実施するに当
つて、使用するメタルラスの構造によつては、取
外し時期に至つても腐食程度が十分ではなく、取
外しに手間がかかつたり、或は逆に防護を必要と
する期間内で既に使用に耐え得ない程度まで腐食
してしまつたりする場合が考えられる。
In view of these circumstances, the present inventors have devised a new method of using metal lath made from ultra-thin steel plates as a protective material that is wrapped around tree trunks, etc., and utilizing the corrosion of the metal lath to save the trouble of removing it. I devised it. Metal lath, which is made from ultra-thin steel sheets, can be easily wrapped around tree trunks and branches, and it not only has a protective effect through its physical shielding effect, but also has a structure unique to metal lath, that is, the twisting of each linear part. This provides excellent protection against small animals. However, when implementing such a method, depending on the structure of the metal lath used, the degree of corrosion may not be sufficient even when it is time to remove it, making removal time-consuming, or conversely, preventing protection. It is conceivable that the material may have already corroded to the extent that it cannot withstand use within the required period.
本発明はこのような点に鑑み、鋼材の腐食速度
と樹木の防護必要期間との関係から、防護必要期
間中は小動物等に対して確実な防護作用が得ら
れ、しかも取外時期においてはこれを容易に取外
すことができる樹木防護用メタルラスを提供する
ものであり、その特徴は、樹木に巻付けて使用す
るメタルラスであつて、樹木に巻付けその防護必
要期間経過後腐朽した状態となるよう、線状部の
太さを30〜85μmとしたことにある。 In view of these points, the present invention has been developed based on the relationship between the rate of corrosion of steel and the period during which tree protection is required, so that a reliable protective effect against small animals, etc. can be obtained during the period during which protection is required, and furthermore, this can be achieved at the time of removal. This product provides a metal lath for tree protection that can be easily removed.The feature is that it is a metal lath that is used by wrapping it around a tree, so that it does not rot after the required period of protection has elapsed. The reason is that the thickness of the linear portion is 30 to 85 μm.
以下、本発明の詳細を第１図及び第２図に基づ
いて説明する。 Hereinafter, details of the present invention will be explained based on FIGS. 1 and 2.
メタルラスは、第１図に示すように薄鋼板に多
数の切目を平行に付し、菱形網状に展伸したもの
である。本発明者等が創案した樹木防護方式は、
このようなメタルラスを樹木に巻付け、主として
積雪期間野生小動物からこれを防護し、且つ鋼材
の腐食を利用し、取付期間中腐朽したメタルラス
を防護必要期間経過後除去するようにしたもので
ある。このため本発明では、メタルラスを樹木に
巻付け防護必要期間（野出小動物から防護しなけ
ればならない期間、主として積雪期間）を経過し
た後腐朽した状態、すなわち取付箇所から自然に
崩落し、或は作業者により容易に剥脱され得る程
度に腐朽した状態となるよう、メタルラスを構成
する鋼材の腐食速度（使用条件下における腐食速
度）とメタルラス線状部の太さ（断面縦横の寸
法）との比を選定する。例えば、防護材の樹木へ
の取付期間は一般に５〜６か月間程度であり、こ
の時期における鋼材の腐食速度から、取外し作業
時点において上述したような腐朽した状態となる
ようなメタルラス線状部の太さを選定するもので
ある。 As shown in FIG. 1, metal lath is a thin steel plate with many parallel cuts and stretched into a rhombic net shape. The tree protection system devised by the present inventors is
This kind of metal lath is wrapped around a tree to protect it from small wild animals mainly during the snowy period, and the metal lath that has rotted during the installation period is removed after the necessary protection period has elapsed by taking advantage of the corrosion of the steel material. For this reason, in the present invention, after the metal lath is wrapped around a tree and the required protection period has passed (the period during which it must be protected from small animals in the wild, mainly during the snowfall period), the metal lath is placed in a rotten state, that is, it collapses naturally from the attachment point, or The ratio of the corrosion rate of the steel material constituting the metal lath (corrosion rate under usage conditions) to the thickness (length and width dimensions of the cross section) of the metal lath linear part so that it is in a state of decay to the extent that it can be easily peeled off by workers. Select. For example, protective materials are generally attached to trees for about 5 to 6 months, and due to the rate of corrosion of steel during this period, metal lath linear parts may be in a rotten state as described above at the time of removal. The thickness is selected.
鋼（普通鋼）の腐食速度はその置かれた環境に
より違いがあるが、本発明材の使用環境について
特に検討したところ、積雪期を含む冬期の平均的
な気象条件において、５〜６か月間の腐食量（腐
食深さ）がほぼ85〜23μmの範囲であることが確
認できた。そして、このような腐食速度を前提と
した場合、防護が必要な期間（特に積雪期）にお
ける防護機能が害されず、しかも防護材を取付け
てから積雪期を含む５〜６か月を経過した後の時
点において自然に崩落し或いは作業者によつて容
易に剥脱され得る程度まで腐朽した状態とするに
は、線状部１（第２図中D1およびD2）の太さは
30〜85μmの範囲で選定する必要がある。線状部
の太さが30μm未満であると、その腐食の進行に
より積雪期の途中でメタルラスが腐朽し樹幹部等
から自然に崩落してしまうおそれがある。一方、
上述したように本発明材の使用環境における５〜
６か月間の腐食量の上限がほぼ85μmであること
から、線状部の太さが85μmを超えると、線状部
に対しての腐食の程度が十分ではなく、雪どけ後
（例えば、４，５月頃）の取外し作業においてそ
の剥脱を容易に行うことができなくなるおそれが
ある。 The corrosion rate of steel (ordinary steel) differs depending on the environment in which it is placed, but when we specifically examined the environment in which the material of this invention is used, it was found that the corrosion rate of steel (common steel) differs depending on the environment in which it is placed. It was confirmed that the amount of corrosion (corrosion depth) was approximately in the range of 85 to 23 μm. Assuming such a corrosion rate, the protective function during the period when protection is required (especially during the snowy season) will not be impaired, and moreover, 5 to 6 months have passed since the protective material was installed, including the snowy season. In order to maintain the state of decay to the extent that it can naturally collapse or be easily peeled off by workers at a later point in time, the thickness of the linear portion 1 (D 1 and D 2 in FIG. 2) should be set as follows.
It is necessary to select within the range of 30 to 85 μm. If the thickness of the linear portion is less than 30 μm, there is a risk that the metal lath will rot during the snowy season due to progression of corrosion and will naturally collapse from the trunk of the tree. on the other hand,
As mentioned above, 5 to 5 in the usage environment of the present invention material
Since the upper limit of the amount of corrosion for 6 months is approximately 85 μm, if the thickness of the linear part exceeds 85 μm, the degree of corrosion to the linear part is not sufficient, and after the snow melts (for example, There is a risk that it will not be possible to easily remove it during removal work (around May).
なお、前記D2は素材鋼板の板厚に相当するも
のであり、したがつて、この値に応じてメタルラ
スの素材鋼板の板厚が決められる。 Note that D 2 corresponds to the thickness of the material steel plate, and therefore, the thickness of the material steel plate of the metal lath is determined according to this value.
第３図は、以上のような樹木防護用メタルラス
の使用状態を示すもので、メタルラスＡを地上か
ら所定の高さ（積雪量等を考慮した高さ）まで巻
付け、針金２等により止めている。一般に樹幹部
の保護は野うさぎ用、根元部の保護は野ねずみ用
であり、図面の場合は土中深さ100mm程度の根元
部までを覆うよう巻付けられている。 Figure 3 shows how the metal lath for tree protection is used as described above.Metal lath A is wrapped around the metal lath A to a predetermined height from the ground (a height that takes into account the amount of snow, etc.), and is secured with wire 2, etc. There is. Generally, the trunk of the tree is protected against wild rabbits, and the base of the tree is protected against field mice, and in the case of the drawing, the tree is wrapped to cover the base of the tree at a depth of about 100 mm.
上記のような取付け作業において、メタルラス
は、その線状部が非常に小径のものであるため、
樹木に対する巻付けが極めて容易である。 In the above-mentioned installation work, metal lath has a very small diameter linear part, so
It is extremely easy to wrap around trees.
また、上述したようにメタルラスは、その特徴
として線状部が捩じれたような構造を有してお
り、この捩じれにより線状部の鋭利な切断縁が部
分的に外側を向いている。したがつて、メタルラ
スの小動物に対する防護機能は、その物理的な遮
蔽作用のみならず、上記した鋭利な線状部が、樹
木を噛ろうとする小動物を傷つけ、小動物が樹木
に近づかないようにする効果も大きい。 Further, as described above, the metal lath has a structure in which the linear portions are twisted, and due to this twisting, the sharp cutting edges of the linear portions partially face outward. Therefore, the protective function of metal lath against small animals is not only its physical shielding effect, but also the effect that the sharp linear parts described above can injure small animals that try to chew on trees and prevent small animals from approaching trees. It's also big.
また、メタルラスは線状部が上記したように捩
じれているため、メタルラス面を合わせると線状
部どうしが引つかかる性質がある。このため樹木
に巻付ける際に、メタルラス自体に仮り止め作用
があり、この仮止め作用により巻付け時の作業を
円滑且つ効率的に行うことができるという効果も
大きい。 Furthermore, since the linear portions of the metal lath are twisted as described above, the linear portions tend to be drawn together when the metal lath surfaces are brought together. Therefore, when wrapping the tree around the tree, the metal lath itself has a temporary fixing effect, and this temporary fixing effect has a great effect in that the work at the time of wrapping can be carried out smoothly and efficiently.
なお、この種の防護材としては鋼線を編んだワ
イヤラスを用いることができる。 Note that a wire lath made of braided steel wire can be used as this type of protective material.
以上述べた本発明の樹木防護用メタルラスによ
れば、極めて薄い構造であるため樹木の幹や枝に
簡単に巻付けることができ、しかも、その線状部
の構成から、積雪期等の防護必要期間においては
野生小動物等の噛りから樹木を適切に防護するこ
とができるとともに、雪どけ後の取外し時期にお
いては自然に崩落し或いは作業者により容易に剥
脱される程度まで腐朽し、従来の防護材に較べ取
外しの手間を大幅に減ずることができる。
According to the above-described metal lath for tree protection of the present invention, since it has an extremely thin structure, it can be easily wrapped around tree trunks and branches, and because of the structure of its linear parts, it is necessary for protection during snowy seasons, etc. During this period, trees can be properly protected from chewing by small wild animals, etc., and when removed after the snow has melted, they will naturally collapse or rot to the extent that they can be easily removed by workers. The effort required for removal can be significantly reduced.
また、本発明のメタルラスは、上述したように
極薄で樹木に巻付ける際の取扱が極めて容易であ
るにもかかわらず、メタルラス特有の線状部が捩
じれた構造により、鋭利な線状部が樹木を噛ろう
とする小動物を傷つけ、小動物が樹木に近づかな
いようにする効果があり、その物理的な遮蔽作用
と相俟つて、小動物に対する大きな防護効果が得
られる。 In addition, although the metal lath of the present invention is extremely thin and extremely easy to handle when wrapped around a tree as described above, it has a structure in which the linear portions are twisted, which is unique to metal lath, so it does not have sharp linear portions. It has the effect of injuring small animals that try to chew on trees and preventing them from getting close to the trees. Combined with its physical shielding effect, it provides a great protective effect against small animals.
また、メタルラスはメタルラス面を合わせると
線状部どうしが引つかかる性質があるため、樹木
に巻付ける際に、メタルラス自体に仮り止め作用
があり、この仮止め作用により巻付け時の作業を
円滑且つ効率的に行うことができるという作業上
の大きな利点もある。 In addition, metal lath has the property that when the metal lath surfaces are brought together, the linear parts will stick to each other, so when wrapping it around a tree, the metal lath itself has a temporary fixing effect, and this temporary fixing effect makes the wrapping process smoother. It also has the great advantage of being efficient.
なお、腐朽したメタルラスの一部は土壌に含ま
れることになるが、このような少量の鉄分が環境
汚染等の問題を生じないことは言うまでもない。 Although some of the decayed metal lath will be contained in the soil, it goes without saying that such a small amount of iron will not cause problems such as environmental pollution.
第１図は本発明の樹木防護用メタルラスの平面
図、第２図は同じく部分拡大図である。第３図は
本発明のメタルラスの使用状態図である。
図において、１は線状部を示す。
FIG. 1 is a plan view of the metal lath for tree protection of the present invention, and FIG. 2 is a partially enlarged view of the same. FIG. 3 is a diagram showing the state in which the metal lath of the present invention is used. In the figure, 1 indicates a linear portion.
Claims (1)
て、樹木に巻付けその防護必要期間経過後腐朽し
た状態となるよう、線状部の太さを30〜85μmと
した樹木防護用メタルラス。1. A metal lath for protecting trees, which is used by being wrapped around a tree, and has a linear portion having a thickness of 30 to 85 μm so that it will rot after the required period of protection has elapsed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59229010A JPS61108311A (en) | 1984-11-01 | 1984-11-01 | Metal lath for protecting tree |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59229010A JPS61108311A (en) | 1984-11-01 | 1984-11-01 | Metal lath for protecting tree |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61108311A JPS61108311A (en) | 1986-05-27 |
| JPH0368651B2 true JPH0368651B2 (en) | 1991-10-29 |
Family
ID=16885341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59229010A Granted JPS61108311A (en) | 1984-11-01 | 1984-11-01 | Metal lath for protecting tree |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61108311A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NO20231212A1 (en) * | 2023-11-09 | 2025-05-12 | Frukt As | Method and device for protecting root and trunk of a plant |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS487985U (en) * | 1971-06-09 | 1973-01-29 |
-
1984
- 1984-11-01 JP JP59229010A patent/JPS61108311A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61108311A (en) | 1986-05-27 |
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