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JPH099798A - Material for covering fruit tree - Google Patents

Material for covering fruit tree

Info

Publication number
JPH099798A
JPH099798A JP7163324A JP16332495A JPH099798A JP H099798 A JPH099798 A JP H099798A JP 7163324 A JP7163324 A JP 7163324A JP 16332495 A JP16332495 A JP 16332495A JP H099798 A JPH099798 A JP H099798A
Authority
JP
Japan
Prior art keywords
bag
fruit tree
covering material
woven fabric
covering
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.)
Withdrawn
Application number
JP7163324A
Other languages
Japanese (ja)
Inventor
Yasuhiko Fujiwara
保彦 藤原
Hirobumi Iwasaki
岩崎  博文
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Asahi Chemical Industry Co Ltd
Original Assignee
Asahi Chemical Industry Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Asahi Chemical Industry Co Ltd filed Critical Asahi Chemical Industry Co Ltd
Priority to JP7163324A priority Critical patent/JPH099798A/en
Publication of JPH099798A publication Critical patent/JPH099798A/en
Withdrawn legal-status Critical Current

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  • Protection Of Plants (AREA)
  • Nonwoven Fabrics (AREA)

Abstract

PURPOSE: To obtain a covering material for a fruit tree such as mandarin orange tree, which is made of a specific nonwoven fabric formed in a bag shape partially equipped with zippers, light in weight and good is fittability and shows excellent effects such as wind-breaking, bird repellency, insect repellency and frost protection. CONSTITUTION: A nonwoven fabric such as a partially press-fused synthetic filament nonwoven fabric with optical transparency of >=40%, air permeability of >=50cc/cm<2> /sec, tensile strength of >=2kg/5cm is formed in a bag shape and the bag is partially equipped with zippers and/or strings so that a tree is covered with this bag. This bag has a top face 20 and side faces 21 and they are sewed at the boundary edges (a) and (b). The covering material at the top face 20 has preferably high optical transparency, while the material of the side faces 21 is made of a non-woven fabric of high strength.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は果樹用被覆材に関する。
さらに詳しくは、みかん、なし、りんご等の果樹に被覆
し、防風、防鳥、防虫をする被覆材に関する。
FIELD OF THE INVENTION The present invention relates to a covering material for fruit trees.
More specifically, the present invention relates to a covering material for windproofing, birdproofing and insectproofing by covering fruit trees such as mandarin oranges, pears and apples.

【0002】[0002]

【従来の技術】みかん、なし、りんご等を栽培する果樹
は品質の良い果実を収穫する為に色々工夫されている。
例えば果実1個1個に紙袋を被せて虫、鳥などから保護
する方法がある。しかし、1個1個紙袋を被せる作業が
重労働であり且つ、雨にぬれると破れ易く、透光率が低
いなどの問題がある。
2. Description of the Related Art Fruit trees for cultivating mandarin oranges, pears, apples, etc. are variously devised in order to harvest high quality fruits.
For example, there is a method of covering each fruit with a paper bag to protect it from insects and birds. However, there is a problem that the work of covering the paper bags one by one is hard work, is easily broken when wet, and has a low light transmittance.

【0003】また、防風、防霜、防鳥、防虫等の目的で
寒冷紗などのネット状物が使用されている。しかし、目
的とする防風、防霜、防鳥、防虫等の効果が充分でな
く、また、被覆する作業が重労働であるなどの問題があ
る。
In addition, a net-like material such as a gauze cloth is used for the purpose of preventing wind, frost, birds, insects and the like. However, there are problems that the desired effects of windproofing, frostproofing, birdproofing, insect control, etc. are not sufficient, and that the work of covering is heavy labor.

【0004】[0004]

【発明が解決しようとする課題】本発明の目的は、透光
性、耐久性などの問題点を解決した、防風、防寒、防
霜、防虫、防鳥効果が優れ、しかも、果実を被覆する作
業を軽減することができる、果樹用被覆材を提供するこ
とにある。
DISCLOSURE OF THE INVENTION The object of the present invention is to solve the problems of translucency, durability, etc., and is excellent in windproofing, coldproofing, frostproofing, insectproofing, and birdproofing, and also covers fruits. It is intended to provide a covering material for fruit trees, which can reduce the work.

【0005】[0005]

【課題を解決するための手段】本発明は、透光率が40
%以上、通気性が50cc/cm2 /sec以上、引張
強力が2kg/5cm以上の不織布が製袋され、部分的
にファスナーおよび/またはひもが付けられた果樹を被
覆する形態のものであることを特徴とする果樹用被覆
材、である。
The present invention has a light transmittance of 40.
% Or more, air permeability of 50 cc / cm 2 / sec or more, and tensile strength of 2 kg / 5 cm or more, a non-woven fabric is formed into a bag and partially covers a fruit tree with fasteners and / or strings attached. A covering material for fruit trees, which is characterized by:

【0006】本発明の果樹用被覆材は、特定の透光性、
通気性、強力などをもつ不織布からなるものである。更
に詳しくは果樹の全体或は枝などに被覆し、防風、防
鳥、防虫効果に優れたもので、品質の良い果実を得るこ
とができるものである。本発明の果樹用被覆材は、例え
ば図1に例を示すように、不織布の被覆材1の幕状物に
したもので、果樹3の全体を被覆し、支柱、骨材補強部
などの補強材2を用いて支持し、止め具4で地面に固定
し使用されるものであり、その他、天幕状物を単にすっ
ぽり果樹に被せて紐で果樹の幹や枝に固定するとか地面
に固定するもの、および果樹を部分的に、例えば枝全体
を巾着のようにして被覆し紐で固定するなどの方法で使
用されるものである。
The covering material for fruit trees of the present invention has a specific translucency,
It is made of a non-woven fabric having breathability and strength. More specifically, the whole or a branch of a fruit tree is covered, and it is excellent in wind-proofing, bird-proofing, and insect-controlling effects, and a good-quality fruit can be obtained. The covering material for fruit trees of the present invention is, for example, as shown in FIG. 1, a curtain-like material of a covering material 1 made of a non-woven fabric, which covers the entire fruit tree 3 and reinforces pillars, aggregate reinforcing portions and the like. It is used by supporting it with the material 2 and fixing it to the ground with the stopper 4, or simply covering the fruit tree with the tent-like material and fixing it to the trunk or branch of the fruit tree with a string, or fixing it to the ground. It is used in such a method that a tree and a fruit tree are partially covered, for example, the entire branch is covered like a purse and fixed with a string.

【0007】本発明の果樹用被覆材は、図2に1例を示
すように、縫製加工されているものなので、特に、果樹
全体を被せる場合の作業性が良い。図2のような果樹用
被覆材は、果樹の上面部20と側面部21とが縫製部
イ,ロによって製縫加工されている。本発明の果樹用被
覆材は、果樹の上面部20と、側面部21とで透光性、
通気性、強力などの異なる不織布を用いることが好まし
い。例えば、上面部20の被覆材は透光性の大きい不織
布で、側面部21の被覆材は強力の大きい不織布を用い
ることが好ましい。
Since the covering material for fruit trees of the present invention is sewn as shown in FIG. 2 by way of example, workability is particularly good when covering the entire fruit tree. In the covering material for fruit trees as shown in FIG. 2, the upper surface portion 20 and the side surface portion 21 of the fruit tree are sewn by the sewing portions a and b. The covering material for fruit trees of the present invention has a light-transmitting property in the upper surface portion 20 and the side surface portion 21 of the fruit tree,
It is preferable to use non-woven fabrics having different breathability and strength. For example, it is preferable that the covering material of the upper surface portion 20 is a non-woven fabric having a large light-transmitting property, and the covering material of the side surface portion 21 is a non-woven fabric having a large strength.

【0008】本発明の果樹用被覆材は、製袋加工された
袋形状のもので、形状は円筒状、球状、四角形状、多角
形状などで特に限定されないが、一部分にファスナーお
よび/またはひも、マジックテープ(登録商標)などを
取付け、開閉できるようにしてあるものなので果樹への
装着が容易にできるもので、装着の作業性が良い。本発
明の果樹用被覆材に用いる不織布は、透光率が40%以
上、通気性が50cc/cm2 /sec以上、引張強力
が2kg/5cm以上である。
The covering material for fruit trees of the present invention is a bag-shaped bag-shaped product, and is not particularly limited in shape such as cylindrical, spherical, quadrangular or polygonal shape, but a part thereof may be a fastener and / or a string, Since it can be opened and closed by attaching Velcro (registered trademark) etc., it can be easily attached to fruit trees, and the workability of attachment is good. The nonwoven fabric used for the fruit tree coating material of the present invention has a light transmittance of 40% or more, an air permeability of 50 cc / cm 2 / sec or more, and a tensile strength of 2 kg / 5 cm or more.

【0009】本発明に用いる不織布は、透光率、通気
性、引張強力の特性を満たすならば特に制限されない
が、例えば、ポリプロピレン繊維、ポリエステル繊維、
共重合ポリエステル繊維、ポリエチレン−ポリエステ
ル、共重合ポリエステル−ポリエステルなどの複合繊維
等単一或は2種以上から成る短繊維、長繊維又は、混合
或は積層繊維を用いることができる。
The non-woven fabric used in the present invention is not particularly limited as long as it satisfies the characteristics of light transmittance, air permeability and tensile strength. For example, polypropylene fiber, polyester fiber,
A short fiber, a long fiber or a mixed or laminated fiber composed of a single type or two or more types such as a copolymerized polyester fiber, a composite fiber such as polyethylene-polyester and a copolymerized polyester-polyester can be used.

【0010】繊維の断面形状も特に制限されないが、丸
型、扁平、異形断面又は捲縮繊維などが用いられる。本
発明に用いる不織布は、公知の製造方法のものが用いら
れ、スパンボンド法、ニードルパンチ法、サーマルボン
ド法、トウ開繊法などが挙げられる。特に部分熱圧着の
合繊長繊維不織布は、低目付で引張強度が高く、かつ、
通気性、透光率が高いので好ましい。
The cross-sectional shape of the fiber is also not particularly limited, but a round shape, a flat shape, a modified cross section, a crimped fiber or the like is used. As the non-woven fabric used in the present invention, a known production method is used, and examples thereof include a spun bond method, a needle punch method, a thermal bond method, and a tow opening method. In particular, the partial thermocompression bonded long-fiber nonwoven fabric has a low basis weight and high tensile strength, and
It is preferable because it has high air permeability and high light transmittance.

【0011】また、本発明に用いる不織布は、撥水加
工、樹脂加工、着色加工などの機能付与をして耐久性、
耐磨耗性、撥水性性、防虫性などの加工処理がされてい
てもよい。本発明の果樹用被覆材に用いられる不織布
は、目付が10〜50g/m2 であることが好ましく、
さらに好ましくは15〜40g/m2 である。不織布の
目付が10g/m2 未満では引張強度が弱くまた、50
g/m2 超えると透光率通気性が満足されない。
Further, the nonwoven fabric used in the present invention is provided with functions such as water repellent finish, resin finish, and coloring finish for durability,
It may be processed such as abrasion resistance, water repellency and insect repellency. The nonwoven fabric used for the fruit tree coating material of the present invention preferably has a basis weight of 10 to 50 g / m 2 ,
More preferably, it is 15 to 40 g / m 2 . If the basis weight of the non-woven fabric is less than 10 g / m 2 , the tensile strength is weak and
If it exceeds g / m 2, the light transmittance and air permeability are not satisfied.

【0012】本発明に用いるられ不織布は、構成繊維の
平均繊度が、透光率、通気性、引張強度などから一般に
0.5デニール以上が好ましく、さらに好ましくは1.
0〜5デニールである。本発明の果樹用被覆材に用いら
れる不織布は、JIS−L−1906(1994)で測
定される引張強力が2kg/5cm以上であることが好
ましく、さらに好ましくは3〜15kg/5cmであ
る。引張強度が2kg/5cm未満では引張強度が得ら
れず破れ易いなどの問題が生じる。
In the nonwoven fabric used in the present invention, the average fineness of the constituent fibers is generally preferably 0.5 denier or more in view of light transmittance, air permeability, tensile strength, etc., and more preferably 1.
It is 0-5 denier. The nonwoven fabric used for the fruit tree covering material of the present invention preferably has a tensile strength of 2 kg / 5 cm or more as measured by JIS-L-1906 (1994), and more preferably 3 to 15 kg / 5 cm. If the tensile strength is less than 2 kg / 5 cm, the tensile strength cannot be obtained and problems such as easy breakage occur.

【0013】また、本発明に用いられる不織布は、JI
S−L−1096(1994)で測定される透光率が4
0%以上であり、好ましくは50〜95%である。透光
率が40%未満では果実の甘味、色目の良いものが得ら
れ難い。また、本発明に用いられる不織布は、JIS−
L−1096(1994)で測定される通気性が50c
c/cm2 /sec以上であり、好ましくは70〜70
0cc/cm2 /secである。 不織布の通気性が5
0cc/cm2 /sec未満では通気抵抗が大きく、強
い風雨では倒壊され易くなる。また、通気性が700c
c/cm2 /secを超えると構成繊維間隙が大きくな
り防虫性などの効果が不足する。
The non-woven fabric used in the present invention is JI
The light transmittance measured by SL-1096 (1994) is 4
It is 0% or more, preferably 50 to 95%. When the light transmittance is less than 40%, it is difficult to obtain the sweetness of fruits and the good color. The nonwoven fabric used in the present invention is JIS-
Breathability measured by L-1096 (1994) is 50c
c / cm 2 / sec or more, preferably 70 to 70
It is 0 cc / cm 2 / sec. The breathability of the non-woven fabric is 5
If it is less than 0 cc / cm 2 / sec, the ventilation resistance is large, and it is easily collapsed in strong wind and rain. In addition, breathability is 700c
If it exceeds c / cm 2 / sec, the gap between the constituent fibers becomes large and the effects such as insect repellency are insufficient.

【0014】本発明の果樹用被覆材は、果樹を被覆する
形態、例えば蚊屋のような天幕状物や巾着状、に製袋加
工されているものであり、上面の不織布と側面の不織布
とを縫着、接着、溶着及びフアスナー、ひもなどの止め
具で止着することによって製袋加工されており、果樹へ
の装着の作業性が良い。本発明の果樹用被覆材は、上面
及び側面をそれぞれ裁断した後、縫い糸を用いるミシン
縫製、ホットメルト接着剤などの接着、加熱板又は超音
波などの溶着によって製袋加工されている。更に、上面
の周囲に吊り部、及び破れ難くするように2重に縫製し
補強部を形成させ、側面にファスナー、マジックテープ
および紐などを少なくとも1ケ所に取りつけて開閉でき
るようにしてある。
The covering material for fruit trees of the present invention is formed into a bag for forming a fruit tree, for example, in the form of an tent like a mosquito shop or in a purse-like shape. The bag is made by sewing, gluing, welding, and fastening with fasteners such as fasteners and strings, and it has good workability when attached to fruit trees. The covering material for fruit trees of the present invention is subjected to bag-making processing by cutting the upper surface and the side surfaces, and then sewing with sewing threads, adhering with a hot melt adhesive or the like, and welding with a heating plate or ultrasonic waves. Further, a suspending portion is lapped around the upper surface and a reinforcing portion is formed by double sewing so as not to be easily torn, and a fastener, a velcro, a string and the like are attached to at least one side portion to be opened and closed.

【0015】本発明の果樹用被覆材は、果樹の周囲に骨
材を組み立て、補強材及び止め具と組み合わせ、不織布
を骨組みの外側または果樹と骨組みの間に被せる、また
は果樹用被覆材を、直接、果樹全体や枝にすっぽり被せ
て用いられる。天幕状物にするときには、プラスチック
製の止め具、ひも、マジックテープ及び杭などを用いて
装着することができる。
The fruit tree dressing of the present invention comprises assembling an aggregate around the fruit tree, combining it with a reinforcing material and a stopper, covering the non-woven fabric with the outside of the frame or between the fruit tree and the frame, or It is used by directly covering the entire fruit tree or branches. When it is made into an awning, it can be attached using a plastic stopper, a string, a velcro, a pile, or the like.

【0016】本発明の果樹用被覆材は、1人作業で、フ
ァスナーを開いた状態で支柱で持ち上げて果樹の上から
装着することが可能である。本発明の果樹用被覆材は、
不織布の透光率、通気性が高いので果樹を自然環境に近
い状態で育成することができ甘味及び色目の良い果実を
収穫することができる。
[0016] The covering material for fruit trees of the present invention can be mounted on the fruit trees by one person's work while lifting the fasteners and lifting them by the columns. The covering material for fruit trees of the present invention,
Since the non-woven fabric has high light transmittance and air permeability, fruit trees can be grown in a state close to the natural environment, and fruits with sweetness and good color can be harvested.

【0017】以下、本発明を具体的に説明する。The present invention will be specifically described below.

【0018】[0018]

【実施例1】図2のような天幕状の上面として、透光率
が56%、通気性が450cc/cm2 /sec、引張
強度がタテ方向8.3kg/5cm、ヨコ方向47kg
/5cm、目付が25g/m2 、(平均繊径1.8デニ
ール、部分熱圧着率12%)のポリエステル長繊維不織
布を用いた。
Example 1 As an awning-like upper surface as shown in FIG. 2, light transmittance is 56%, air permeability is 450 cc / cm 2 / sec, tensile strength is 8.3 kg / 5 cm in vertical direction, 47 kg in horizontal direction.
A polyester continuous fiber non-woven fabric of / 5 cm, a basis weight of 25 g / m 2 , and an average fiber diameter of 1.8 denier and a partial thermocompression bonding rate of 12% was used.

【0019】側面として、透光率が47%、通気性が1
10cc/cm2 /sec、引張強度がタテ方向12.
6kg/5cm、ヨコ方向8.0kg/5cm、目付が
40g/m2 (平均繊径、3.0デニール、部分熱圧着
率24%)のポリエステル長繊維不織布を用いた。上記
不織布を上面3m×3m角に裁断し側面を3m×3m角
に4枚裁断し、各々準備し図2のように上面周囲と側面
同士の3ケ所をミシン縫製によって縫着し側面1ケ所を
ファスナーを取付けてミシン縫製して開閉できるように
した。
As a side surface, the light transmittance is 47% and the air permeability is 1
10 cc / cm 2 / sec, tensile strength in vertical direction 12.
A polyester continuous fiber nonwoven fabric having a weight of 6 kg / 5 cm, a lateral direction of 8.0 kg / 5 cm, and a basis weight of 40 g / m 2 (average fiber diameter, 3.0 denier, partial thermocompression bonding rate of 24%) was used. The above non-woven fabric is cut into 3 m x 3 m square upper surface and 4 pieces of side faces are cut into 3 m x 3 m square, respectively prepared, and as shown in FIG. I attached a fastener and sewn a sewing machine so that I could open and close it.

【0020】ついで、支柱、骨材などの補強材と止め具
とによって、図1のように果樹用被覆材として使用して
みかんの果樹を成育した。樹木被覆下部からの風の吹き
上げがなく、鳥の侵入も防止でき、防虫、防風などの効
果があり、更に甘味の高い実の大きな良好な収穫が得ら
れた。
Then, a mandarin orange fruit tree was grown by using a reinforcing material such as a pillar and an aggregate and a stopper as a covering material for a fruit tree as shown in FIG. No wind was blown up from the lower part of the tree cover, the invasion of birds could be prevented, and the effects of insect control and wind protection were also obtained.

【0021】[0021]

【比較例1】実施例1でのみかん果樹と同様のものに果
樹用被覆材を使用しないで比較した。成育中風雨に直接
あたり実が落下するもの、枝との接触による傷つくもの
が多発し、鳥害、虫害などが生じ、実施例1と比較し収
穫は悪い結果となった。
Comparative Example 1 Comparison was made only in Example 1 with the same fruit tree without using the fruit tree coating material. During the growing season, many fruits directly hit the rain and rain, and some were damaged by contact with branches, resulting in bird damage, insect damage, etc., and the yield was worse than that in Example 1.

【0022】[0022]

【発明の効果】本発明の果樹用被覆材は、軽いので簡便
に取扱いが出来装着作業が容易であり防風、防鳥、防
虫、防霜などの効果に優れる被覆材である。従ってみか
ん、なし、りんご、イチチグなどの果樹用被覆材として
良好に使用される。
INDUSTRIAL APPLICABILITY The covering material for fruit trees of the present invention is a covering material which is light in weight, easy to handle and easy to put on, and which is excellent in windproof, birdproof, insectproof and frostproof effects. Therefore, it is favorably used as a covering material for fruit trees such as mandarin oranges, pears, apples, and figs.

【図面の簡単な説明】[Brief description of drawings]

【図1】果樹の周囲に骨材を組み立て、果樹用被覆材を
果樹に被覆した状態の1例を模式的に示す断面図。
FIG. 1 is a cross-sectional view schematically showing an example of a state in which an aggregate is assembled around a fruit tree and the fruit tree coating material is coated on the fruit tree.

【図2】被覆する形態が天幕状である果樹用被覆材の1
例を示す斜視図。
[FIG. 2] 1 of a covering material for fruit trees whose covering form is an awning
The perspective view which shows an example.

【符号の説明】[Explanation of symbols]

1 被覆材 2 補強材 3 果樹 4 止め具 21 被覆材の上面部 22 被覆材の側面部 イ 縫着部 ロ ファスナー取付部 ハ 補強部 1 Covering material 2 Reinforcement material 3 Fruit tree 4 Stopper 21 Top surface portion of coating material 22 Side surface portion of coating material a Sewn portion b Fastener mounting portion c Reinforcing portion

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 透光率が40%以上、通気性が50cc
/cm2 /sec以上、引張強力が2kg/5cm以上
の不織布が製袋され、部分的にファスナーおよび/また
はひもが付けられた果樹を被覆する形態のものであるこ
とを特徴とする果樹用被覆材。
1. A light transmittance of 40% or more and a breathability of 50 cc.
/ Cm 2 / sec or more and a tensile strength of 2 kg / 5 cm or more, a non-woven fabric is formed into a bag, and is a form for covering a fruit tree partially attached with a fastener and / or a string. Material.
【請求項2】 不織布が、部分熱圧着の合繊長繊維不織
布からなる請求項1記載の果樹用被覆材。
2. The covering material for fruit trees according to claim 1, wherein the non-woven fabric is a partially thermocompression bonded long-fiber non-woven fabric.
【請求項3】 不織布が目付50g/m2 以下である請
求項1記載の果樹用被覆材。
3. The fruit tree coating material according to claim 1, wherein the non-woven fabric has a basis weight of 50 g / m 2 or less.
JP7163324A 1995-06-29 1995-06-29 Material for covering fruit tree Withdrawn JPH099798A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7163324A JPH099798A (en) 1995-06-29 1995-06-29 Material for covering fruit tree

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7163324A JPH099798A (en) 1995-06-29 1995-06-29 Material for covering fruit tree

Publications (1)

Publication Number Publication Date
JPH099798A true JPH099798A (en) 1997-01-14

Family

ID=15771688

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7163324A Withdrawn JPH099798A (en) 1995-06-29 1995-06-29 Material for covering fruit tree

Country Status (1)

Country Link
JP (1) JPH099798A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010058517A (en) * 2009-10-28 2010-03-18 Asahi Kasei Fibers Corp Laminate-processed paper
CN103004497A (en) * 2012-12-17 2013-04-03 南京农业大学 Method for fasting determining early-stage fallen leaf quantity and/or fallen leaf rate of fruit tree
CN110972785A (en) * 2019-12-04 2020-04-10 丹棱县生态源农业发展有限公司 Application method of non-woven fabric on citrus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010058517A (en) * 2009-10-28 2010-03-18 Asahi Kasei Fibers Corp Laminate-processed paper
CN103004497A (en) * 2012-12-17 2013-04-03 南京农业大学 Method for fasting determining early-stage fallen leaf quantity and/or fallen leaf rate of fruit tree
CN110972785A (en) * 2019-12-04 2020-04-10 丹棱县生态源农业发展有限公司 Application method of non-woven fabric on citrus

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Effective date: 20020903