JP6970449B2 - Weeding tools for paddy fields and weed control methods for paddy fields - Google Patents

Weeding tools for paddy fields and weed control methods for paddy fields Download PDF

Info

Publication number
JP6970449B2
JP6970449B2 JP2019048492A JP2019048492A JP6970449B2 JP 6970449 B2 JP6970449 B2 JP 6970449B2 JP 2019048492 A JP2019048492 A JP 2019048492A JP 2019048492 A JP2019048492 A JP 2019048492A JP 6970449 B2 JP6970449 B2 JP 6970449B2
Authority
JP
Japan
Prior art keywords
paddy field
paddy
weed
weeding
weeds
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.)
Active
Application number
JP2019048492A
Other languages
Japanese (ja)
Other versions
JP2020146009A (en
Inventor
豊 白鳥
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.)
Niigata Prefecture
Original Assignee
Niigata Prefecture
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 Niigata Prefecture filed Critical Niigata Prefecture
Priority to JP2019048492A priority Critical patent/JP6970449B2/en
Publication of JP2020146009A publication Critical patent/JP2020146009A/en
Application granted granted Critical
Publication of JP6970449B2 publication Critical patent/JP6970449B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Catching Or Destruction (AREA)
  • Soil Working Implements (AREA)

Description

本発明は、水田内の雑草を除去する水田用除草具及びこの水田用除草具を用いて水田内の雑草を防除する水田雑草防除方法に関するものである。 The present invention relates to a paddy field weeding tool for removing weeds in a paddy field and a paddy field weed control method for controlling weeds in a paddy field using the paddy field weeding tool.

近年、食の安全性や環境保全に対する関心が高まり、有機米の消費者ニーズも増加傾向にある。しかしながら、日本全国における有機米の生産量は、米生産量全体の僅か0.2%程度しかなく、その量は決して十分なものとはいえない。 In recent years, there has been increasing interest in food safety and environmental conservation, and consumer needs for organic rice are also on the rise. However, the production of organic rice in Japan is only about 0.2% of the total rice production, and the amount is not sufficient.

そこで、有機米の生産量を増やすために水稲有機栽培の普及推進を行うことが必要であるが、この水稲有機栽培は農薬を用いた除草ができないため、雑草の多発による過重労働や収量低下という問題があり、この問題が、水稲有機栽培が普及しない主な要因となっている。 Therefore, it is necessary to promote the spread of organic rice cultivation in order to increase the production of organic rice, but since this organic rice cultivation cannot be weeded with pesticides, it is said that overwork and yield reduction due to the frequent occurrence of weeds. There is a problem, and this problem is the main reason why organic rice cultivation is not widespread.

このような背景のもと、これまでにこの水稲有機栽培における除草作業の簡易化を目的として、高精度除草機(特許文献1)やチェーンを利用した除草機(特許文献2)を用いる物理的手法、米糠や菜種油粕等を用いる化学的手法、或いはアイガモや鯉等を用いる生物的手法等の様々な除草方法、除草具及び除草機の開発・改良が提案されている。 Against this background, we have used a high-precision weeder (Patent Document 1) and a chain-based weeder (Patent Document 2) for the purpose of simplifying the weeding work in organically cultivated paddy rice. Various weeding methods such as methods, chemical methods using rice bran, rapeseed oil cake, and biological methods using aigamo, carp, etc., and development / improvement of weeding tools and weeding machines have been proposed.

特開2012−187073号公報Japanese Unexamined Patent Publication No. 2012-187073 特開2015−128408号公報Japanese Unexamined Patent Publication No. 2015-128408

しかしながら、上記に挙げたようなこれまでの手法の多くは、稲株(苗)を跨いで歩行若しくは走行し、条間に生える雑草を除草することを主体としているため株間に雑草が残り易いものであったり、雑草を引き抜いたり引きちぎったりする機構が無いため、コストや労力が掛かるだけでなく、除草効果が低かったり、除草力は高いものの水稲の生育に悪影響を与えてしまったり、或いは、除草作業を行っても繰り返し雑草が生えてきて水田内の雑草が減少しないなど、効果においても不安定な面が多くあり、雑草対策としては十分な効果を得られていないのが現状である。 However, most of the methods so far as mentioned above mainly walk or run across rice plants (seedlings) and weed the weeds that grow between the rows, so weeds tend to remain between the plants. Because there is no mechanism to pull out or tear off weeds, not only is it costly and laborious, but also the weeding effect is low, the weeding power is high, but it adversely affects the growth of paddy rice, or weeding. Even if the work is carried out, weeds grow repeatedly and the weeds in the paddy fields do not decrease. There are many unstable aspects in the effect, and the current situation is that sufficient effects have not been obtained as weed control measures.

本発明は、このような現状に鑑みなされたもので、低コストで簡易に実施することができる除草効果の高い水田用除草具及び水田雑草防除方法を提供することを目的とする。 The present invention has been made in view of such a situation, and an object of the present invention is to provide a weeding tool for paddy fields and a method for controlling weeds in paddy fields, which can be easily carried out at low cost and have a high weeding effect.

添付図面を参照して本発明の要旨を説明する。 The gist of the present invention will be described with reference to the accompanying drawings.

水田20内の雑草を除去する水田用除草具であって、水が張られている水田20内を移動可能な基体1の下面に多数の雑草引掻き体2が突設された構成であり、前記雑草引掻き体2は、可撓性を有する線状部材若しくは棒状部材の先端部側に略球状に形成された膨出部3が複数設けられたものであることを特徴とする水田用除草具に係るものである。 It is a weeding tool for paddy fields that removes weeds in the paddy field 20, and has a configuration in which a large number of weed scrapers 2 are projected on the lower surface of a substrate 1 that can move in the paddy field 20 filled with water. The weed scraper 2 is a weeding tool for paddy fields, characterized in that a plurality of bulging portions 3 formed in a substantially spherical shape are provided on the tip end side of a flexible linear member or a rod-shaped member. It is related.

また、請求項1記載の水田用除草具において、前記雑草引掻き体2は、前記基体1を支持するものであり、また、前記膨出部3は、前記基体1が前記水田20内を移動する際、前記水田20の底土壌に没入するように設けられていることを特徴とする水田用除草具に係るものである。 Further, in the paddy field weeding tool according to claim 1, the weed scraper 2 supports the substrate 1, and the bulging portion 3 moves the substrate 1 in the paddy field 20. The present invention relates to a weeding tool for paddy fields, which is characterized in that it is provided so as to be immersed in the bottom soil of the paddy field 20.

また、請求項1,2いずれか1項に記載の水田用除草具において、前記雑草引掻き体2は、合成樹脂製であることを特徴とする水田用除草具に係るものである。 Further, in the paddy field weeding tool according to any one of claims 1 and 2, the weed scraper 2 relates to a paddy field weeding tool characterized by being made of synthetic resin.

また、請求項1〜3いずれか1項に記載の水田用除草具において、前記雑草引掻き体2は、前記基体1の下面にちどり状に配設されていることを特徴とする水田用除草具に係るものである。 Further, in the paddy field weeding tool according to any one of claims 1 to 3, the weed scraper 2 is arranged in a dust shape on the lower surface of the substrate 1. It is related to.

また、請求項1〜4いずれか1項に記載の水田用除草具において、前記基体1は、前記水田20の水面よりも上方に配設されるものであることを特徴とする水田用除草具に係るものである。 Further, in the paddy field weeding tool according to any one of claims 1 to 4, the substrate 1 is arranged above the water surface of the paddy field 20. It is related to.

また、請求項1〜5いずれか1項に記載の水田用除草具において、前記基体1は、発泡樹脂製の平板であることを特徴とする水田用除草具に係るものである。 Further, in the paddy field weeding tool according to any one of claims 1 to 5, the substrate 1 relates to a paddy field weeding tool characterized by being a flat plate made of foamed resin.

また、請求項1〜5いずれか1項に記載の水田用除草具において、前記基体1は、木製のすのこ板であることを特徴とする水田用除草具に係るものである。 Further, in the paddy field weeding tool according to any one of claims 1 to 5, the substrate 1 relates to a paddy field weeding tool characterized by being a wooden drainboard.

また、請求項1〜7いずれか1項に記載の水田用除草具において、前記基体1は、人力若しくは動力により引っ張り移動可能に構成されていることを特徴とする水田用除草具に係るものである。 Further, in the paddy field weeding tool according to any one of claims 1 to 7, the substrate 1 relates to a paddy field weeding tool characterized in that it can be pulled and moved by human power or power. be.

また、水田20内の雑草を防除する水田雑草防除方法であって、水が張られている水田20内を移動可能な基体1の下面に可撓性を有する多数の雑草引掻き体2が突設され、この雑草引掻き体2に複数の膨出部3を設けて構成された水田用除草具10を前記水田20内に配設し、前記雑草引掻き体2の膨出部3を前記水田20の底土壌に没入させ、この状態で前記水田用除草具10を前記水田20の外からの操作により適宜移動させて前記雑草を前記膨出部3に絡め除去することを特徴とする水田雑草防除方法に係るものである。 Further, it is a paddy field weed control method for controlling weeds in the paddy field 20, and a large number of flexible weed scrapers 2 are projected on the lower surface of the substrate 1 that can move in the paddy field 20 filled with water. A weed control tool 10 for paddy fields, which is configured by providing a plurality of bulging portions 3 on the weed scraping body 2, is arranged in the paddy field 20, and the bulging portions 3 of the weed scraping body 2 are arranged in the paddy field 20. A method for controlling weeds in a paddy field, which comprises immersing the weed in the bottom soil and, in this state, appropriately moving the weeding tool 10 for the paddy field by an operation from the outside of the paddy field 20 to entangle the weed with the bulging portion 3 and remove the weed. It is related to.

また、請求項9記載の水田雑草防除方法において、前記水田用除草具10を、前記水田20に入ることなく該水田20の外から人力若しくは動力により引動して移動させることを特徴とする水田雑草防除方法に係るものである。 Further, in the paddy field weed control method according to claim 9, the paddy field weeds 10 are moved by being pulled from outside the paddy field 20 by human power or power without entering the paddy field 20. It is related to the control method.

また、請求項9,10いずれか1項に記載の水田雑草防除方法において、前記水田用除草具10により前記水田20内の雑草を除去する前に、予め前記水田20に菜種油粕若しくは米ぬかを施用することを特徴とする水田雑草防除方法に係るものである。 Further, in the paddy field weed control method according to any one of claims 9 and 10, rapeseed oil cake or rice bran is applied to the paddy field 20 in advance before the weeds in the paddy field 20 are removed by the paddy field weed control tool 10. It relates to a method for controlling paddy weeds, which is characterized by the fact that it is used.

本発明は上述のように構成したから、低コストで簡易に実施することができ、優れた除草効果を発揮する従来に無い画期的な水田用除草具及び水田雑草防除方法となる。 Since the present invention is configured as described above, it is an epoch-making weeding tool for paddy fields and a method for controlling weeds in paddy fields, which can be easily carried out at low cost and exhibits an excellent weeding effect.

実施例1の水田用除草具を示す説明斜視図である。It is explanatory perspective view which shows the weeding tool for paddy field of Example 1. FIG. 実施例1の水田用除草具における雑草引掻き体の配設状態を示す説明平面図である。It is explanatory top view which shows the arrangement state of the weed scraper in the weeding tool for paddy field of Example 1. FIG. 実施例1の水田用除草具の雑草引掻き体を示す説明側面図である。It is explanatory side view which shows the weed scraper body of the weeding tool for paddy field of Example 1. FIG. 実施例1の水田用除草具の使用状態を示す説明図である。It is explanatory drawing which shows the use state of the weeding tool for paddy field of Example 1. FIG. 実施例1の水田用除草具の使用状態を示す説明図である。It is explanatory drawing which shows the use state of the weeding tool for paddy field of Example 1. FIG. 実施例1の水田用除草具の雑草引掻き体による除草作業状態を示す説明図である。It is explanatory drawing which shows the weeding work state by the weed scraper of the weeding tool for paddy field of Example 1. FIG. 実施例1の水田用除草具の使用状態を示す説明図である。It is explanatory drawing which shows the use state of the weeding tool for paddy field of Example 1. FIG. 実施例1の使用状態を示す水田用除草具の別例(木製すのこタイプ)を示す説明斜視図である。It is explanatory perspective figure which shows another example (wooden drainboard type) of the weeding tool for paddy field which shows the use state of Example 1. FIG. 実施例1の水田雑草防除方法の効果確認試験における雑草本数測定結果を示すグラフである。It is a graph which shows the weed number measurement result in the effect confirmation test of the paddy field weed control method of Example 1. 実施例1の水田雑草防除方法の効果確認試験における雑草乾物量測定結果を示すグラフである。It is a graph which shows the weed dry matter amount measurement result in the effect confirmation test of the paddy field weed control method of Example 1. 実施例1の水田雑草防除方法の効果確認試験における収量測定結果を示すグラフである。It is a graph which shows the yield measurement result in the effect confirmation test of the paddy field weed control method of Example 1. 実施例2の水田雑草防除方法の比較試験における雑草本数測定結果を示すグラフである。It is a graph which shows the weed number measurement result in the comparative test of the paddy field weed control method of Example 2. 実施例2の水田雑草防除方法の比較試験における雑草乾物量測定結果を示すグラフである。It is a graph which shows the weed dry matter amount measurement result in the comparative test of the paddy field weed control method of Example 2. 実施例2の水田雑草防除方法の比較試験における収量測定結果を示すグラフである。It is a graph which shows the yield measurement result in the comparative test of the paddy field weed control method of Example 2. 実施例3の水田雑草防除方法の効果確認試験における雑草本数測定結果を示すグラフである。It is a graph which shows the weed number measurement result in the effect confirmation test of the paddy field weed control method of Example 3. 実施例3の水田雑草防除方法の効果確認試験における雑草乾物量測定結果を示すグラフである。It is a graph which shows the weed dry matter amount measurement result in the effect confirmation test of the paddy field weed control method of Example 3.

好適と考える本発明の実施形態を、図面に基づいて本発明の作用を示して簡単に説明する。 Embodiments of the present invention which are considered to be suitable will be briefly described by showing the operation of the present invention based on the drawings.

本発明の水田用除草具10を水田20内に配設し、水田20の外から操作して移動させると、基体1の下面に突設した雑草引掻き体2の先端部が田面表層(田んぼ土壌の苗の根には届かない0〜2cm程度の深さ領域)に没入した状態で移動し、この雑草引掻き体2が田面表層を引掻き移動することで、この雑草引掻き体2が田面表層で発芽した雑草を引掻き、この雑草の根を引き抜いたり切断したりして、この田面表層に生息する雑草を除草する。 When the weeding tool 10 for paddy field of the present invention is arranged in the paddy field 20 and moved by operating from the outside of the paddy field 20, the tip of the weed scraper 2 protruding from the lower surface of the substrate 1 becomes the surface layer of the paddy field (rice field soil). The weed scraper 2 germinates on the surface of the paddy field by moving while immersing in a depth area of about 0 to 2 cm that does not reach the roots of the seedlings. Weeds that inhabit the surface layer of the paddy field are weeded by scratching the weeds that have been grown and pulling out or cutting the roots of the weeds.

この際、本発明は、雑草引掻き体2に複数の膨出部3が設けられているから、この膨出部3が雑草引掻き体2に引っ掛かった雑草の滑り抜けを可及的に防止するので、雑草の引っ掛かりが強固になり、より多くの雑草を引き抜いたり引きちぎったりする優れた除草効果を発揮するものとなる。 At this time, in the present invention, since the weed scraper 2 is provided with a plurality of bulging portions 3, the bulging portions 3 prevent the weeds caught on the weed scraper 2 from slipping through as much as possible. , The catch of weeds becomes stronger, and it exerts an excellent weeding effect of pulling out and tearing off more weeds.

さらに、本発明の雑草引掻き体2は、可撓性を有するから、これによっても雑草がより絡まり、除草効果が良好となり、更に、この可撓性を有することで雑草引掻き体2が前後左右方向(360°方向)のいずれの方向に柔軟に撓み変形するから、基体1の走行方向も規制されず前後方向、左右方向、或いは斜め方向などいずれの方向に移動させても同じ効率で除草を行うことがで、しかも、基体1の水田20内での旋回操作も阻害せず、基体1を容易に操作することができる操作性に優れた水田用除草具となる。 Further, since the weed scraper 2 of the present invention has flexibility, the weeds are more entangled by this, and the weeding effect is improved. Further, the weed scraper 2 has the flexibility in the front-back and left-right directions. Since it flexibly bends and deforms in any direction (360 ° direction), the traveling direction of the substrate 1 is not restricted, and weeding is performed with the same efficiency regardless of the direction such as the front-back direction, the left-right direction, or the diagonal direction. Moreover, it is a weeding tool for paddy fields with excellent operability that allows the substrate 1 to be easily operated without hindering the turning operation of the substrate 1 in the paddy field 20.

また、本発明者は、従来、何度除草しても繰り返し雑草が生えてくるのは、除草作業時に作業者や(除草機を備えた)走行車が水田20内を移動することで田面を撹拌し、この撹拌作用により田面深層(田面表層よりもさらに深い領域、例えば作業者の足や走行車の走行輪が沈み込む深さ領域)で休眠状態の雑草種子が発芽可能な環境の田面表層に移動させてしまうからであると結論付けた。 In addition, the present inventor has conventionally said that weeds grow repeatedly no matter how many times weeding, because workers and traveling vehicles (equipped with a weeding machine) move in the paddy field 20 during weeding work. Stirring is performed, and the surface layer of the field surface in an environment where dormant weed seeds can germinate in the deep layer of the field surface (a region deeper than the surface layer of the field surface, for example, a region deeper where the feet of the worker and the traveling wheel of the traveling vehicle sink). I concluded that it was because I would move it to.

そこで、本発明の水田雑草防除方法では、本発明の水田用除草具10を用い、この水田用除草具10を水田20に入ることなく水田20の外から操作することによって水田20内を移動させることとした。 Therefore, in the paddy field weed control method of the present invention, the paddy field weeding tool 10 of the present invention is used, and the paddy field weeding tool 10 is operated from the outside of the paddy field 20 without entering the paddy field 20 to move the inside of the paddy field 20. I decided.

したがって、本発明は、除草作業時に作業者や走行車が水田20内に入って移動することがないから、田面が撹拌されず、田面深層にある雑草種子が田面表層に移動することがないので、繰り返し雑草が生えてくることが抑制され、本発明により田面表層の雑草を除草した後は、新たな雑草の発生が殆ど無い優れた雑草防除効果が発揮されるものとなる。 Therefore, in the present invention, since the worker and the traveling vehicle do not enter and move in the paddy field 20 during the weeding work, the field surface is not agitated and the weed seeds in the deep layer of the field surface do not move to the surface layer of the paddy field. Repeated growth of weeds is suppressed, and after weeding the weeds on the surface of the paddy field according to the present invention, an excellent weed control effect with almost no new weeds is exhibited.

このように、本発明は、低コストで簡易に実施することができ、しかも、安定した除草効果を発揮する画期的な水田用除草具及び水田雑草防除方法となる。 As described above, the present invention is an epoch-making weeding tool for paddy fields and a method for controlling weeds in paddy fields, which can be easily implemented at low cost and also exhibits a stable weeding effect.

本発明について、以下の実施例1〜3で具体的に説明する。 The present invention will be specifically described with reference to Examples 1 to 3 below.

〈実施例1〉
本発明の実施例1について図1〜10に基づいて説明する。
<Example 1>
Example 1 of the present invention will be described with reference to FIGS. 1 to 10.

本実施例は、本発明の水田用除草具10を用いた水田雑草防除方法に係るものである。 The present embodiment relates to a paddy field weed control method using the paddy field weeding tool 10 of the present invention.

先ず、水田用除草具10について説明する。本実施例の水田用除草具10は、水が張られた水田20内を移動可能な基体1と、この基体1の下面に設けられる多数の雑草引掻き体2と、基体1を引っ張り操作するための紐体4とで構成されるものである。 First, the weeding tool 10 for paddy fields will be described. The weeding tool 10 for paddy fields of this embodiment is for pulling and operating a base 1 that can move in a paddy field 20 filled with water, a large number of weed scrapers 2 provided on the lower surface of the base 1, and a base 1. It is composed of the string body 4 of the above.

具体的には、基体1は、図1に示すような横長方形状に形成される発泡樹脂製板状部材(例えば発泡ポリスチレン板)からなるものであり、本実施例の基体1は、この発泡樹脂製板状部材として市販されている1920mm×920mm×30mmのサイズのスタイロフォーム(登録商標)が用いられている。なお、基体1のサイズについては、前述のサイズに限らず適宜変更可能である。 Specifically, the substrate 1 is made of a foamed resin plate-shaped member (for example, a expanded polystyrene plate) formed in a horizontal rectangular shape as shown in FIG. 1, and the substrate 1 of this embodiment is the expanded foam. Styrofoam (registered trademark) having a size of 1920 mm × 920 mm × 30 mm, which is commercially available as a resin plate-shaped member, is used. The size of the substrate 1 is not limited to the above-mentioned size and can be changed as appropriate.

また、本実施例の基体1は、移動用の動力(移動用駆動装置)が備えられておらず、人力による引っ張り操作によって移動する構成とされている。 Further, the substrate 1 of the present embodiment is not provided with a power for movement (movement drive device), and is configured to move by a pulling operation by human power.

具体的には、図4,5に示すように、基体1に連結される長尺の紐体4を作業者が水田20の外から引っ張ることで基体1が水田20内を引っ張り方向に移動する構成とされている。すなわち、本実施例の基体1は、エンジンやモーター等の駆動装置を備える構成ではないので、その分、簡易な構成となり、容易に且つ安価に作成することができるものとなっている。 Specifically, as shown in FIGS. 4 and 5, the base 1 moves in the pulling direction in the paddy field 20 when the operator pulls the long string 4 connected to the base 1 from the outside of the paddy field 20. It is said to be composed. That is, since the substrate 1 of the present embodiment is not configured to include a drive device such as an engine or a motor, the configuration is simplified accordingly and can be easily and inexpensively manufactured.

より具体的には、本実施例の基体1は、左右の両側前角部に紐体4を係止する紐係止部5が設けられていて、図1に示すように、この両紐係止部5に二股状の形成される紐体4の先端部が連結されて、1本の紐体4で基体1を左右均等に引っ張り操作して、この基体1を安定的に直進移動させることができるように構成されている。なお、この基体1に連設される紐体4は、軽量で耐水性を有する材質のもので、長さは水田20の長手方向の長さ以上あるものが良い。また、本実施例では、上述のように基体1に連設した紐体4を作業者が引っ張り操作することで基体1が移動する構成としているが、作業者の代わりに巻き取り装置などの動力を用いて引っ張り操作するように構成しても良い。 More specifically, the substrate 1 of the present embodiment is provided with a string locking portion 5 for locking the string body 4 at the left and right front corner portions, and as shown in FIG. 1, both string engaging portions are provided. The tip portion of the string body 4 formed in a bifurcated shape is connected to the stop portion 5, and the substrate 1 is pulled evenly to the left and right by one string body 4 to stably move the substrate 1 in a straight line. It is configured to be able to. The string 4 connected to the substrate 1 is made of a lightweight and water-resistant material, and the length is preferably longer than the length of the paddy field 20 in the longitudinal direction. Further, in the present embodiment, as described above, the base 1 is moved by the operator pulling the string 4 connected to the base 1, but the power of the take-up device or the like is used instead of the worker. It may be configured to be pulled by using.

また、この基体1の下面に設けられた多数の雑草引掻き体2は、可撓性を有する線状部材若しくは棒状部材からなり、先端部側、具体的には、基体1が水田20内を移動する際に雑草引掻き体2の水田20の土壌内に没入する部分に、略球状に形成される膨出部3が複数設けられる構成とされ、図3に示すように、基体1に対して垂直状態となるようにしてこの基体1の下面に突設されている。 Further, a large number of weed scrapers 2 provided on the lower surface of the substrate 1 are made of a flexible linear member or a rod-shaped member, and the tip side, specifically, the substrate 1 moves in the paddy field 20. A plurality of bulging portions 3 formed in a substantially spherical shape are provided in a portion of the weed scraper 2 that is immersed in the soil of the paddy field 20, and is perpendicular to the substrate 1 as shown in FIG. It is projected on the lower surface of the substrate 1 so as to be in a state.

具体的には、膨出部3は、雑草引掻き体2の長手方向に沿ってほぼ全域に亘って等間隔で設けられている。 Specifically, the bulging portions 3 are provided at equal intervals over substantially the entire area along the longitudinal direction of the weed scraper 2.

本実施例の雑草引掻き体2は、この膨出部3が設けられていることで、雑草引掻き体2に引っ掛かった雑草の根がこの膨出部3に引っ掛かって雑草引掻き体2からの滑り抜けが抑制され、これにより、雑草の根の雑草引掻き体2への絡みつきを良好にして、優れた除草効果を発揮する構成とされている。 Since the weed scraper 2 of the present embodiment is provided with the bulging portion 3, the root of the weed caught on the weed scraping body 2 is caught on the bulging portion 3 and slips out from the weed scraping body 2. It is suppressed, thereby improving the entanglement of the roots of weeds with the weed scraper 2 and exhibiting an excellent weeding effect.

より具体的には、本実施例の水田用除草具10は、この雑草引掻き体2として市販されているビーズタイ(結束バンド)が用いられている。 More specifically, as the weeding tool 10 for paddy fields of this embodiment, a bead tie (cable tie) commercially available as the weed scraper 2 is used.

この雑草引掻き体2としてのビーズタイは、合成樹脂製(具体的には、ポリアミド樹脂製)で、長さ180mm、太さ(本体径)約2mm、膨出部3の径が約3mmのものが用いられている。なお、雑草引掻き体2の材質、太さ及び膨出部3の径及び形状については、前記記載に限定されるものではなく、本実施例の作用効果を奏するものであれば適宜変更可能なものとする。また、雑草引掻き体2の長さについては、本実施例の水田用除草具10は、この多数の雑草引掻き体2が、基体1を支持する構成とされているので、水田20内に張られた水の深さよりも長い突設長となり得るものであれば良い。 The bead tie as the weed scraper 2 is made of synthetic resin (specifically, polyamide resin), and has a length of 180 mm, a thickness (main body diameter) of about 2 mm, and a bulging portion 3 having a diameter of about 3 mm. It is used. The material, thickness, and diameter and shape of the bulging portion 3 of the weed scraper 2 are not limited to the above description, and can be appropriately changed as long as they exhibit the effects of the present embodiment. And. Regarding the length of the weed scraper 2, the weeding tool 10 for paddy field of this embodiment is stretched in the paddy field 20 because the large number of weed scrapers 2 support the substrate 1. Anything that can have a projecting length longer than the depth of the water is sufficient.

すなわち、言い換えると、本実施例の基体1は、この多数の雑草引掻き体2によって支持され、雑草引掻き体2は、基体1を支持することで適宜な荷重がかかり、この荷重により膨出部3が設けられている先端部側が田面表層内に適宜な深さで没入するように構成されている。 That is, in other words, the substrate 1 of the present embodiment is supported by the large number of weed scrapers 2, and the weed scraper 2 is subjected to an appropriate load by supporting the substrate 1, and the bulging portion 3 is subjected to this load. The tip side of the field is configured to immerse in the surface layer of the rice field at an appropriate depth.

また、本実施例の雑草引掻き体2は、前述した基体1の下面のほぼ全面に亘って整列状態に設けられている。 Further, the weed scraper 2 of this embodiment is provided in an aligned state over almost the entire lower surface of the above-mentioned substrate 1.

具体的には、本実施例においては、約900本の雑草引掻き体2が、所定の間隔(例えば、長手方向が5cm間隔、短手方向が3cm間隔)をおいて、図2に示すように、ちどり状に配設されていて、実質的な配設間隔が1/2に狭められて、より多くの雑草の根を引掛け得ることができるように構成されている。 Specifically, in this embodiment, as shown in FIG. 2, about 900 weed scrapers 2 are spaced at predetermined intervals (for example, 5 cm intervals in the longitudinal direction and 3 cm intervals in the lateral direction). , It is arranged in a dusty shape, and the substantial arrangement interval is narrowed to 1/2 so that more weed roots can be caught.

また、本実施例の水田用除草具10は、前述した基体1と雑草引掻き体2とを合わせた重量が数kg(具体的には、3〜5kg程度)となるように構成されている。 Further, the weeding tool 10 for paddy fields of this embodiment is configured so that the combined weight of the above-mentioned substrate 1 and the weed scraper 2 is several kg (specifically, about 3 to 5 kg).

すなわち、本実施例の水田用除草具10は、基体1(雑草引掻き体2を含む)を3〜5kg程度の軽量な重量となるように構成することで、図6に示すように、雑草引掻き体2の先端が田面に深く没入し過ぎずに田面表層、具体的には、苗の根には届かない0〜2cm程度の深さに没入し、この田面表層に根を張るホタルイ、コナギ、オモダカ、キカシグサ、アゼナなどの雑草を主に除草すると共に、作業者が容易に引っ張り操作することができ作業者に掛かる負荷を軽減することができるように構成されている。 That is, as shown in FIG. 6, the weeding tool 10 for paddy fields of the present embodiment is configured such that the substrate 1 (including the weed scraper 2) has a light weight of about 3 to 5 kg, so that weed scraping can be performed. The tip of the body 2 does not immerse too deeply in the surface of the rice field, but immerses in the surface of the rice field, specifically, at a depth of about 0 to 2 cm, which does not reach the roots of the seedlings. Weeds such as Sagittaria trifolia, Pontederia vaginalis, and Lindernia procumbens are mainly weeded, and the operator can easily pull the weeds to reduce the load on the operator.

以上のように、本実施例の水田用除草具10は、膨出部3を有する雑草引掻き体2で田面表層を引っかくことで雑草の根の滑り抜けを可及的に低減してより多くの雑草の根を引き抜いたり引きちぎったりすることができ、優れた除草効果を発揮する。 As described above, the weeding tool 10 for paddy fields of the present embodiment reduces the slip-through of the roots of weeds as much as possible by scratching the surface layer of the paddy field with the weed scraper 2 having the bulging portion 3, and more weeds. It can pull out and tear off the roots of grass, and has an excellent herbicidal effect.

また、本実施例の水田用除草具10は、可撓性を有する雑草引掻き体2で基体1が支持されているので、基体1を旋回させる際、雑草引掻き体2が柔軟に撓り変形してスムーズに旋回することができ、これにより、容易に旋回操作することができる。 Further, in the weeding tool 10 for paddy fields of the present embodiment, since the substrate 1 is supported by the flexible weed scraper 2, the weed scraper 2 flexibly bends and deforms when the substrate 1 is swiveled. It can turn smoothly, which makes it easy to turn.

更に、本実施例の水田用除草具10は、この可撓性を有する雑草引掻き体2が基体1の下面に垂直に設けられているから、基体1を前後左右(360°方向)のいずれの方向に引動しても雑草引掻き体2が同じように撓み変形し、基体1の移動方向によらず常に同じ効率で除草を行うことが可能となる。 Further, in the weeding tool 10 for paddy fields of the present embodiment, since the weed scraper 2 having this flexibility is provided vertically on the lower surface of the substrate 1, the substrate 1 can be placed either front, back, left or right (360 ° direction). Even if the weed scraper 2 is pulled in the direction, the weed scraper 2 bends and deforms in the same manner, and weeding can always be performed with the same efficiency regardless of the moving direction of the substrate 1.

これにより、例えば、図7に示すように、基体1の前端部と後端部の夫々に紐体4を連結し、水田20の両端に夫々作業者を配置し、交互に引っ張り操作することで効率的に除草作業を行うことができるものとなる。 As a result, for example, as shown in FIG. 7, the string body 4 is connected to each of the front end portion and the rear end portion of the substrate 1, workers are arranged at both ends of the paddy field 20, and the pulling operation is performed alternately. Weeding work can be performed efficiently.

更に、本実施例の水田用除草具10は、市販のスタイロフォーム(登録商標)を用いた基体1に、市販のビーズタイを用いた雑草引掻き体2を差し込み係止して下面側に突設させ、紐体4を連設しただけの極めて簡易な構成であるので、容易に作成可能であり、しかも、基体1となるスタイロフォーム(登録商標)と雑草引掻き体2となるビーズタイは、合わせても数千円程度で入手できるため、極めて安価に作成することができる。 Further, in the weeding tool 10 for paddy fields of the present embodiment, a weed scraper 2 using a commercially available bead tie is inserted into a substrate 1 using a commercially available styrofoam (registered trademark) and locked so as to project to the lower surface side. Since it has an extremely simple structure in which the string bodies 4 are connected in series, it can be easily created, and the styrofoam (registered trademark) used as the base 1 and the bead ties used as the weed scraper 2 are thousands in total. Since it can be obtained for about a yen, it can be made at an extremely low cost.

また、本実施例の水田用除草具10は、前述のとおり、雑草引掻き体2の先端が田面に深く没入し過ぎずに田面表層、具体的には、苗の根には届かない0〜2cm程度の深さに没入するように構成したから、除草作業において苗の根を引き抜くことがないので、除草作業において条間と株間を区別することなく効率よく作業を行うことができる。 Further, in the weeding tool 10 for paddy field of this embodiment, as described above, the tip of the weed scraper 2 does not penetrate too deeply into the paddy surface and does not reach the surface layer of the paddy field, specifically, the root of the seedling 0 to 2 cm. Since it is configured to be immersed in a certain depth, the roots of the seedlings are not pulled out in the weeding work, so that the work can be efficiently performed in the weeding work without distinguishing between the rows and the stocks.

このように、本実施例の水田用除草具10は、低コストで且つ簡易構成で容易に作成可能でありながら、操作性に優れ、しかも、優れた除草効果を発揮する画期的な水田用除草具となる。 As described above, the weeding tool 10 for paddy fields of this embodiment is an epoch-making weeding tool for paddy fields that is excellent in operability and exhibits excellent weeding effect while being easy to produce at low cost and with a simple configuration. It becomes a weeding tool.

なお、水田用除草具10に関し、本実施例では基体1は発泡樹脂製としたが、例えば木製(例えば桐集成材)でも良い。 Regarding the weeding tool 10 for paddy fields, although the substrate 1 is made of foamed resin in this embodiment, for example, wooden (for example, paulownia laminated lumber) may be used.

更に、図8に示すように、基体1をすのこ状に形成しても良く、この基体1をすのこ状に形成することで、木製とした場合でも基体1の重量増加を抑えることができ、発泡樹脂製の場合と同様の操作が可能となり、更に、例えば除草作業中に基体1の牽引側が水中に潜り基体1の上面に水が溜まっても、隙間から水が容易に抜け落ち、容易に正常な体勢に戻すことができる効果を奏するものとなる。 Further, as shown in FIG. 8, the substrate 1 may be formed in a slatted shape, and by forming the substrate 1 in a slatted shape, the weight increase of the substrate 1 can be suppressed even when the substrate 1 is made of wood, and foaming can be performed. The same operation as in the case of resin can be performed. Furthermore, even if the tow side of the substrate 1 is submerged in water and water collects on the upper surface of the substrate 1 during weeding work, the water easily falls out of the gap and is easily normal. It will have the effect of returning to the posture.

次に、上述した水田用除草具10を用いた水田雑草防除方法について説明する。 Next, a paddy field weed control method using the above-mentioned paddy field weeding tool 10 will be described.

本実施例の水田雑草防除方法は、水田20内を移動可能な基体1の下面に可撓性を有する多数の雑草引掻き体2が突設され、この雑草引掻き体2には複数の膨出部3が設けられた水田用除草具10を水田20内に配設し、この水田20の外からの操作により水田用除草具10を適宜移動させることにより雑草引掻き体2の膨出部3を水田20の土壌内に没入させて雑草を絡め除去するものである。なお、水田20の外からの操作とは、作業者が水田20の外から水田用除草具10に連設される紐体4を引っ張り、この作業者の引っ張り操作により水田用除草具10を移動させるものであり、すなわち、本実施例の水田雑草防除方法は、水田用除草具10以外は水田20内に入らずに除草作業を行うものである。 In the paddy field weed control method of this embodiment, a large number of flexible weed scrapers 2 are projected on the lower surface of the substrate 1 that can move in the paddy field 20, and the weed scrapers 2 have a plurality of bulging portions. The weeding tool 10 for paddy fields provided with 3 is arranged in the paddy field 20, and the weeding tool 10 for paddy fields is appropriately moved by an operation from the outside of the paddy field 20, so that the bulging portion 3 of the weed scraper 2 is moved to the paddy field. Weeds are entangled and removed by immersing them in 20 soils. The operation from the outside of the paddy field 20 means that the worker pulls the string body 4 connected to the weeding tool 10 for the paddy field from the outside of the paddy field 20, and the weeding tool 10 for the paddy field is moved by the pulling operation of this worker. That is, the paddy field weed control method of this embodiment is to perform the weeding work without entering the paddy field 20 except for the paddy field weeding tool 10.

また、本実施例の水田雑草防除方法は、この水田用除草具10を用いて水田20内の雑草を除去する前に、予め水田20に菜種油粕を施用するものである。すなわち、本実施例の水田雑草防除方法は、水田用除草具10を用いる物理的手法と、菜種油粕を用いる化学的手法とを複合的に用いるものである。なお、本実施例の水田雑草防除方法で除草対象となる雑草は、田面表層(0〜2cm程度の深さ)に根を張る雑草が主であり、具体的には、ホタルイ、コナギ、オモダカ、キカシグサ、アゼナ等である。 Further, in the paddy field weed control method of this embodiment, rapeseed oil cake is applied to the paddy field 20 in advance before the weeds in the paddy field 20 are removed by using the paddy field weeding tool 10. That is, the paddy field weed control method of this embodiment is a combination of a physical method using a paddy field weeding tool 10 and a chemical method using rapeseed oil cake. The weeds to be weeded by the paddy field weed control method of this embodiment are mainly weeds that take root in the surface layer of the rice field (depth of about 0 to 2 cm). Rotala indica, Azena, etc.

以下、本実施例の水田雑草防除方法について詳述する。 Hereinafter, the paddy field weed control method of this embodiment will be described in detail.

本実施例の水田雑草防除方法においては、先ず、稲の苗を水田20に移植する前(田植え前)に代掻きを複数回(例えば1ヶ月程度の期間をあけて2回)行う。 In the paddy field weed control method of this embodiment, first, before transplanting the rice seedlings to the paddy field 20 (before rice planting), the puddling is performed a plurality of times (for example, twice with a period of about one month).

次に、稲の苗を水田20に移植した後(田植え後)に有機物、具体的には、菜種油粕(具体的には、ペレット状の菜種油粕)を水田20内に施用する。なお、この菜種油粕の施用は移植後直ぐに行うことが好ましい。 Next, after the rice seedlings are transplanted to the paddy field 20 (after rice planting), organic matter, specifically, rapeseed oil cake (specifically, pellet-shaped rapeseed oil cake) is applied to the paddy field 20. It is preferable to apply this rapeseed oil cake immediately after transplanting.

そして、この菜種油粕施用後、数日経過して雑草が生長し始めたら1回目の除草作業を行う。 Then, when the weeds start to grow several days after the application of the canola oil lees, the first weeding work is performed.

除草作業では、前述した本実施例の水田用除草具10を用いる。具体的には、例えば、図4,5に示すように水田用除草具10を水田20の一角部に配設し、この水田用除草具10に連設される紐体4を持って作業者がこの一角部と反対側の角部の畦に移動し、この位置から紐体4を引っ張り操作して移動させる。すなわち、本実施例の水田雑草防除方法においては、除草作業時に作業者は水田20内に入らず、水田20の外から紐体4を引っ張り操作して水田用除草具10を移動させることとなる。 In the weeding work, the weeding tool 10 for paddy fields of the present embodiment described above is used. Specifically, for example, as shown in FIGS. Moves to the ridge of the corner opposite to this one corner, and pulls the string body 4 from this position to move it. That is, in the paddy field weed control method of this embodiment, the worker does not enter the paddy field 20 during the weeding work, and the string body 4 is pulled from the outside of the paddy field 20 to move the paddy field weeding tool 10. ..

この水田用除草具10を作業者の引っ張り操作により移動させると(作業者側に引き寄せると)、水田用除草具10の基体1に設けられた雑草引掻き体2が田面表層を引掻きながら移動して、田面表層に根を張る雑草を除草する。 When the weeding tool 10 for paddy fields is moved by the pulling operation of the worker (when pulled toward the worker side), the weed scraper 2 provided on the base 1 of the weeding tool 10 for paddy fields moves while scratching the surface layer of the paddy field. , Weeds that take root on the surface of the rice field.

この際、雑草引掻き体2に設けられた膨出部3により雑草の根の滑り抜けが可及的に抑制されて雑草の根が雑草引掻き体2に良好に絡みつき、優れた除草効果が発揮される。 At this time, the bulging portion 3 provided in the weed scraper 2 suppresses the slipping of the weed roots as much as possible, and the weed roots are entwined well with the weed scraper 2, and an excellent weeding effect is exhibited.

本実施例の水田雑草防除方法は、この除草作業を数日の間隔をあけて(例えば3日乃至4日おき)で数回行う。 In the paddy field weed control method of this embodiment, this weeding work is performed several times at intervals of several days (for example, every 3 to 4 days).

本実施例の水田雑草防除方法においては、前述のとおり、除草作業時に作業者や水田雑草具を備える走行車が水田20内に入らないので、作業者や走行車の水田20内の移動による田面深層部の撹拌がなく、よって、田面深層部に存する雑草種子の表層への移動が生じないため、新たな雑草の発芽が可及的に抑制されることとなる。 In the paddy field weed control method of this embodiment, as described above, since the worker and the traveling vehicle equipped with the paddy field weed tool do not enter the paddy field 20 during the weeding work, the rice field surface due to the movement of the worker and the traveling vehicle in the paddy field 20. Since there is no agitation in the deep layer and therefore the weed seeds existing in the deep layer of the paddy field do not move to the surface layer, the germination of new weeds is suppressed as much as possible.

したがって、従来の方法では除草作業を繰り返し行っても後から新しい雑草が生えてきて水田20内の雑草は殆ど減少しないまま稲が生育してゆくこととなるが、本実施例の水田雑草防除方法は、上述したように新たな雑草の発芽が抑制されるので、除草作業を何度か繰り返すことで、水田20内の雑草が殆どなくなり、雑草がない環境で稲を生育させることができる。 Therefore, in the conventional method, even if the weeding work is repeated, new weeds will grow later and the rice will grow with almost no decrease in the weeds in the paddy field 20, but the paddy field weed control method of this example. As described above, the germination of new weeds is suppressed, so by repeating the weeding work several times, the weeds in the paddy field 20 are almost eliminated, and the rice can be grown in an environment without weeds.

次に、本実施例の水田雑草防除方法の効果を確認するための試験を行ったので、その試験方法及び結果について説明する。 Next, since a test was conducted to confirm the effect of the paddy field weed control method of this example, the test method and the result will be described.

本試験は、新潟県農業総合研究所B−3B圃場にて行った。 This test was conducted in the B-3B field of Niigata Prefectural Agricultural Research Institute.

本試験では、A試験区:無除草区(全く除草しない試験区)と、B試験区:化学的手法区(菜種油粕を施用した化学的手法の除草対策のみを行う試験区)と、C試験区:物理的手法区(本実施例の水田用除草具10を用いた物理的手法の除草対策のみを行う試験区)と、D試験区:化学的手法+物理的手法区(本実施例の水田雑草防除方法であり、菜種油粕を施用した化学的手法と水田用除草具10を用いた物理的手法を併用する除草対策を行う試験区)の4種類の試験区を用い、各試験区においてコシヒカリを栽培し、収穫時における雑草の発生量及び稲の収量について比較を行った。 In this test, Test Group A: No weeding group (test group that does not weed at all), Test Group B: Chemical method group (test group that only takes weeding measures by chemical method using rapeseed oil cake), and Test C. Ward: Physical method plot (test plot where only weeding measures of the physical method using the weeding tool 10 for paddy field of this example are performed) and D test plot: Chemical method + physical method plot (of this example) It is a method for controlling weeds in paddy fields, and in each test plot using four types of test plots (test plots that take weeding measures using both a chemical method using rapeseed oil cake and a physical method using a weeding tool 10 for paddy fields). Koshihikari was cultivated, and the amount of weeds generated at the time of harvest and the yield of rice were compared.

具体的な条件(耕種概要)として、2回の代掻き(4月下旬及び5月下旬)を行い、その後、基肥を側条施用しながら苗を移植した。また、菜種油粕の施用は、この苗の移植後、直ぐに行い、施用量は、100kg/10aとした。また、本実施例の水田用除草具10を用いた除草作業は、移植から約1週間経過後から開始し、3日おきに計9回行った(実施期間は、6月初〜6月末の約1ヶ月間)。その後、7月初旬に中干し、7月中旬に溝切り、7月下旬に入水・追肥を行い、8月中旬に出穂し、9月下旬に収穫を行った。 As a specific condition (outline of cultivation), two puddles (late April and late May) were performed, and then the seedlings were transplanted while applying the basal fertilizer to the side strips. The application of rapeseed oil cake was performed immediately after transplanting the seedlings, and the application rate was 100 kg / 10a. In addition, the weeding work using the paddy field weeding tool 10 of this example started about 1 week after transplanting and was performed 9 times every 3 days (the implementation period is about the beginning of June to the end of June). 1 month). After that, it was dried in the middle in early July, grooved in mid-July, flooded and top-dressed in late July, headed in mid-August, and harvested in late September.

本試験の結果、D試験区では、3回目の除草作業後、水田20内の雑草が殆どなくなり、また、新たな雑草の生長も殆ど確認されなかった。 As a result of this test, in the D test group, after the third weeding work, the weeds in the paddy field 20 were almost eliminated, and the growth of new weeds was hardly confirmed.

また、C試験区及びD試験区においては、水稲の欠株は確認されず、本実施例の水田用除草具10を用いた除草作業による水稲への悪影響がないことも確認できた。 Further, in the C test group and the D test group, no stock shortage of paddy rice was confirmed, and it was confirmed that there was no adverse effect on the paddy rice by the weeding work using the weeding tool 10 for paddy field of this example.

また、図9(単位面積当たりの雑草本数を示すグラフ)及び図10(単位面積当たりの雑草乾物量を示すグラフ)に示すように、本実施例の水田用除草具10を用いた物理的手法の除草対策のみを行ったC試験区と、本実施例の水田雑草防除方法であり、菜種油粕を施用した化学的手法と水田用除草具10を用いた物理的手法を併用する除草対策を行ったD試験区で良好な防除効果が得られた。特に本実施例の水田雑草防除方法を用いたD試験区においては、ほぼ雑草がない状態まで雑草を防除することができることが確認できた。なお、図中の右端のグラフは、本試験とは別に実施した従来の機械除草機(チェーン除草機、作業者が水田内に入り引っ張って移動するタイプ)を用いて除草作業を行った場合の雑草量(除草効果)を示す参考値であり、この結果と比較しても本実施例の水田用除草具10を用いた除草作業のほうが優れた除草効果を発揮することが認識できた。 Further, as shown in FIG. 9 (graph showing the number of weeds per unit area) and FIG. 10 (graph showing the amount of dry weeds per unit area), a physical method using the weeding tool 10 for paddy fields of this embodiment. In the C test group where only the weeding measures were taken, and the paddy field weed control method of this example, weeding measures were taken by using both the chemical method using rapeseed oil cake and the physical method using the weeding tool 10 for paddy fields. A good control effect was obtained in the D test group. In particular, in the D test group using the paddy field weed control method of this example, it was confirmed that weeds could be controlled to a state where there were almost no weeds. The graph on the far right in the figure shows the case where weeding work is performed using a conventional mechanical weeder (chain weeder, a type in which the worker enters the paddy field and pulls and moves) that was carried out separately from this test. It is a reference value showing the amount of weeds (weeding effect), and it was recognized that the weeding work using the weeding tool 10 for paddy fields of this example exerts a superior weeding effect even when compared with this result.

また、収量においても、図11に示すように、無除草のA試験区の収量に対して、B試験区は1.37倍、C試験区は1.52倍、D試験区に至っては1.86倍の収量が得られ、雑草防除による増収効果も確認することができた。 As for the yield, as shown in FIG. 11, the yield of the B test group was 1.37 times, that of the C test group was 1.52 times, and that of the D test group was 1 with respect to the yield of the A test group without weeding. A yield of .86 times was obtained, and the effect of increasing yield by weed control was confirmed.

このように、本実施例の水田雑草防除方法は、2回の代掻きと、移植直後の有機物施用と、その後の表層撹拌除草機である本実施例の水田用除草具10を用いての複数回の除草作業とを行うことで、水稲に悪影響を及ぼすことなく、簡易な作業で、水田20中の雑草発生量を著しく減少させることができ、収量を増収させることができる画期的な水田雑草防除方法となる。 As described above, the paddy field weed control method of this example is performed twice, by scratching twice, applying an organic substance immediately after transplantation, and then using the paddy field weeding tool 10 of this example, which is a surface stirring weeder, a plurality of times. By performing the weeding work of, it is possible to significantly reduce the amount of weeds generated in the paddy field 20 and increase the yield by simple work without adversely affecting the paddy rice. It is a control method.

〈実施例2〉
本発明の実施例2について図12〜14に基づいて説明する。
<Example 2>
Example 2 of the present invention will be described with reference to FIGS. 12-14.

本実施例は、実施例1の菜種油粕を施用した化学的手法と水田用除草具10を用いた物理的手法を併用する水田雑草防除方法の効果確認として、従来の表層撹拌除草機、具体的には、竹ぼうき型除草具を用いた除草方法との効果の差を確認するための試験を行った場合である。以下にその試験方法及び結果について説明する。 In this example, as a confirmation of the effect of the paddy field weed control method in which the chemical method using the rapeseed oil cake of Example 1 and the physical method using the weeding tool 10 for paddy fields are used in combination, a conventional surface layer stirring weeder is specifically used. In this case, a test was conducted to confirm the difference in effect from the weeding method using a bamboo-brush type weeding tool. The test method and results will be described below.

本試験は、新潟県農業総合研究所B−3A2圃場にて行った。 This test was conducted in the B-3A2 field of Niigata Prefectural Agricultural Research Institute.

本試験では、E試験区:無除草区(全く除草しない試験区)と、F試験区:竹ぼうき除草区と、G試験区:実施例1における化学的手法+物理的手法区(菜種油粕を施用した化学的手法と水田用除草具10を用いた物理的手法を併用する除草対策を行う試験区)の3種類の試験区を用い、各試験区においてコシヒカリを栽培し、収穫時における雑草の発生量及び稲の収量について比較を行った。 In this test, E test group: no weeding group (test group without weeding at all), F test group: bamboo weeding group, and G test group: chemical method + physical method group (rapeseed oil cake) in Example 1. Weeds at the time of harvest were cultivated in each of the three test plots (test plots that take weeding measures using both the chemical method applied to and the physical method using the weeding tool 10 for paddy fields). The amount of rice produced and the yield of rice were compared.

具体的な条件(耕種概要)として、各試験区においては、2回の代掻き(4月下旬及び5月下旬)を行い、その後、基肥を側条施用しながら苗を移植した。 As a specific condition (outline of cultivation), in each test plot, two puddles (late April and late May) were performed, and then the seedlings were transplanted while applying the basal fertilizer to the side strips.

また、F試験区においては、移植5日後から3日おきに計4回、竹ぼうき型除草具を用いた除草作業を行った。 In addition, in the F test group, weeding work was performed using a bamboo weeding tool four times in total every three days from 5 days after transplanting.

また、G試験区においては、菜種油粕の施用は、苗の移植後、直ぐに行い、施用量は、100kg/10aとした。また、除草具を用いた除草作業は、F試験区同様、移植5日後から3日おきに計4回行った。 Further, in the G test group, the application of rapeseed oil cake was performed immediately after transplanting the seedlings, and the application rate was 100 kg / 10a. In addition, weeding work using weeding tools was performed a total of 4 times every 3 days from 5 days after transplanting, as in the F test group.

その後、各試験区において、6月末に中干し、7月初に溝切り、7月中旬に入水・追肥を行い、8月中旬に出穂し、9月下旬に収穫を行った。 After that, in each test plot, mid-drying was performed at the end of June, grooving was performed at the beginning of July, water was added and fertilizer was added in the middle of July, heading was performed in the middle of August, and harvesting was performed in the end of September.

本試験の結果、G試験区では、実施例1と同様、4回の除草作業後、水田20内の雑草が殆どなくなり、また、新たな雑草の生長も殆ど確認されなかった。 また、水稲の欠株も確認されなかった。 As a result of this test, in the G test group, after four weeding operations, almost no weeds were found in the paddy field 20, and no new weeds were confirmed to grow. In addition, no stock shortage of paddy rice was confirmed.

また、図12(単位面積当たりの雑草本数を示すグラフ)及び図13(単位面積当たりの雑草乾物量を示すグラフ)に示すように、従来法の竹ぼうき型除草具を用いたF試験区に対して、本実施例の水田雑草防除方法であり、菜種油粕を施用した化学的手法と水田用除草具10を用いた物理的手法を併用する除草対策を行ったG試験区は、雑草本数換算では約1/8、雑草乾物量換算では約1/30の雑草量となる良好な防除効果が得られることが確認できた。 Further, as shown in FIG. 12 (graph showing the number of weeds per unit area) and FIG. 13 (graph showing the amount of dry weeds per unit area), the F test plot using the conventional bamboo weed type weeding tool. On the other hand, the number of weeds in the G test plot, which is the method for controlling weeds in paddy fields in this example, is that weeding measures are taken by using both a chemical method using rapeseed oil cake and a physical method using a weeding tool 10 for paddy fields. It was confirmed that a good control effect was obtained, with the amount of weeds being about 1/8 in terms of conversion and about 1/30 in terms of dry weeds.

また、収量においても、図14に示すように、G試験区においては、無除草のE試験区の収量の約4倍、竹ぼうき型除草具を用いて除草作業を行ったF試験区の収量の約2.4倍の収量が得られ、雑草防除による増収効果も確認することができた。 As for the yield, as shown in FIG. 14, in the G test group, the yield of the F test group was about four times the yield of the E test group without weeding, and the weeding work was performed using the bamboo weed type weeding tool. A yield of about 2.4 times the yield was obtained, and the effect of increasing yield by weed control was confirmed.

〈実施例3〉
本発明の実施例3について図15,16に基づいて説明する。
<Example 3>
Example 3 of the present invention will be described with reference to FIGS. 15 and 16.

本実施例は、実施例1における水田雑草防除方法において、有機物施用に米ぬか(具体的には、米ぬかペレット)を使用した場合である。 This example is a case where rice bran (specifically, rice bran pellets) is used for organic matter application in the paddy field weed control method in Example 1.

この米ぬかを使用した場合の効果確認の試験例を示す。 A test example of confirming the effect when this rice bran is used is shown.

本試験は、新潟県十日町市中条 JAS有機認証圃場にて行った。 This test was conducted at Nakajo JAS Organic Certified Field in Tokamachi City, Niigata Prefecture.

本試験では、E試験区:無除草区(全く除草しない試験区)と、F試験区:化学的手法+物理的手法区(本実施例の水田雑草防除方法であり、米ぬかを施用した化学的手法と水田用除草具10を用いた物理的手法を併用する除草対策を行う試験区)の2種類の試験区を用い、各試験区においてコシヒカリを栽培し、収穫時における雑草の発生量及び稲の収量について比較を行った。 In this test, E test group: no weeding group (test group without weeding at all) and F test group: chemical method + physical method group (the paddy weed control method of this example, which is a chemical using rice bran). Using two types of test plots (test plots that take weeding measures using both the method and the physical method using the weeding tool 10 for paddy fields), weeds were cultivated in each test plot, and the amount of weeds generated at the time of harvest and rice. The yields of rice were compared.

具体的な条件(耕種概要)として、基肥施肥及び耕耘(4月下旬)、2回の代掻き(5月上旬及び6月初)を行い、その後、苗を移植した。また、米ぬかの施用は、この苗の移植後、直ぐに行い、施用量は、50kg/10aとした。また、本実施例の水田用除草具10を用いた除草作業は、移植後3日目から開始し、週2回(2日乃至3日の間隔をあけて)のペースで計5回行った(実施期間は、6月上旬〜6月下旬の約2週間)。その後、8月中旬に出穂し、9月下旬に収穫を行った。 As specific conditions (outline of cultivation), basal fertilizer application and tillage (late April) and two puddling (early May and early June) were performed, and then seedlings were transplanted. The rice bran was applied immediately after transplanting the seedlings, and the application rate was 50 kg / 10a. In addition, the weeding work using the paddy field weeding tool 10 of this example was started from the 3rd day after transplanting, and was performed twice a week (at intervals of 2 to 3 days) a total of 5 times. (The implementation period is about 2 weeks from the beginning of June to the end of June). After that, the heads were headed in mid-August and harvested in late September.

本試験の結果、F試験区では、除草作業後、水田20内の雑草が殆どなくなり、また、新たな雑草の生長も殆ど確認されず、更に、水稲の欠株も確認されず、本実施例の水田用除草具10を用いた除草作業による水稲への悪影響がないことも確認できた。 As a result of this test, in the F test plot, after weeding work, weeds in the paddy field 20 were almost eliminated, no new weed growth was confirmed, and no strain of paddy rice was confirmed. It was also confirmed that there was no adverse effect on paddy rice due to the weeding work using the weeding tool 10 for paddy fields.

また、図15(単位面積当たりの雑草本数を示すグラフ)及び図16(単位面積当たりの雑草乾物量を示すグラフ)に示すように、F試験区で良好な防除効果が得られた。 Further, as shown in FIG. 15 (graph showing the number of weeds per unit area) and FIG. 16 (graph showing the amount of dried weeds per unit area), a good control effect was obtained in the F test group.

また、収量については、図示しないが、F試験区における収量は、近隣の慣行栽培圃場(化学肥料、農薬及び除草剤を施用した圃場)と差が無いことも確認された。 Although the yield is not shown, it was confirmed that the yield in the F test plot was not different from that of the neighboring conventional cultivation fields (fields to which chemical fertilizers, pesticides and herbicides were applied).

このように、本実施例は、菜種油粕の代わりに米ぬかを施用しても、優れた除草効果を発揮する。 As described above, this example exhibits an excellent herbicidal effect even when rice bran is applied instead of rapeseed oil cake.

なお、本発明は、実施例1〜3に限られるものではなく、各構成要件の具体的構成は適宜設計し得るものである。 The present invention is not limited to Examples 1 to 3, and the specific configuration of each constituent requirement can be appropriately designed.

1 基体
2 雑草引掻き体
3 膨出部
10 水田用除草具
20 水田
1 Hypokeimenon 2 Weed scraper 3 Swelling part
10 Weeding tools for paddy fields
20 Paddy fields

Claims (11)

水田内の雑草を除去する水田用除草具であって、水が張られている水田内を移動可能な基体の下面に多数の雑草引掻き体が突設された構成であり、前記雑草引掻き体は、可撓性を有する線状部材若しくは棒状部材の先端部側に略球状に形成された膨出部が複数設けられたものであることを特徴とする水田用除草具。 It is a weeding tool for paddy fields that removes weeds in paddy fields, and has a structure in which a large number of weed scrapers are projected on the lower surface of a substrate that can move in paddy fields filled with water. , A weeding tool for paddy fields, characterized in that a plurality of bulging portions formed in a substantially spherical shape are provided on the tip end side of a flexible linear member or rod-shaped member. 請求項1記載の水田用除草具において、前記雑草引掻き体は、前記基体を支持するものであり、また、前記膨出部は、前記基体が前記水田内を移動する際、前記水田の底土壌に没入するように設けられていることを特徴とする水田用除草具。 In the paddy field weeding tool according to claim 1, the weed scraper supports the substrate, and the bulging portion is the bottom soil of the paddy field when the substrate moves in the paddy field. A weeding tool for paddy fields, which is characterized by being provided so as to be immersed in. 請求項1,2いずれか1項に記載の水田用除草具において、前記雑草引掻き体は、合成樹脂製であることを特徴とする水田用除草具。 The weeding tool for paddy fields according to any one of claims 1 and 2, wherein the weed scraper is made of synthetic resin. 請求項1〜3いずれか1項に記載の水田用除草具において、前記雑草引掻き体は、前記基体の下面にちどり状に配設されていることを特徴とする水田用除草具。 The paddy field weeding tool according to any one of claims 1 to 3, wherein the weed scraper is arranged in a dust shape on the lower surface of the substrate. 請求項1〜4いずれか1項に記載の水田用除草具において、前記基体は、前記水田の水面よりも上方に配設されるものであることを特徴とする水田用除草具。 The paddy field weeding tool according to any one of claims 1 to 4, wherein the substrate is arranged above the water surface of the paddy field. 請求項1〜5いずれか1項に記載の水田用除草具において、前記基体は、発泡樹脂製の平板であることを特徴とする水田用除草具。 The paddy field weeding tool according to any one of claims 1 to 5, wherein the substrate is a flat plate made of foamed resin. 請求項1〜5いずれか1項に記載の水田用除草具において、前記基体は、木製のすのこ板であることを特徴とする水田用除草具。 The paddy field weeding tool according to any one of claims 1 to 5, wherein the substrate is a wooden drainboard. 請求項1〜7いずれか1項に記載の水田用除草具において、前記基体は、人力若しくは動力により引っ張り移動可能に構成されていることを特徴とする水田用除草具。 The paddy field weeding tool according to any one of claims 1 to 7, wherein the substrate is configured to be pullable and movable by human power or power. 水田内の雑草を防除する水田雑草防除方法であって、水が張られている水田内を移動可能な基体の下面に可撓性を有する多数の雑草引掻き体が突設され、この雑草引掻き体に複数の膨出部を設けて構成された水田用除草具を前記水田内に配設し、前記雑草引掻き体の膨出部を前記水田の底土壌に没入させ、この状態で前記水田用除草具を前記水田の外からの操作により適宜移動させて前記雑草を前記膨出部に絡め除去することを特徴とする水田雑草防除方法。 It is a weed control method for paddy fields that controls weeds in paddy fields. A weed control tool for paddy fields configured by providing a plurality of bulging portions is arranged in the paddy field, and the bulging portions of the weed scraper are immersed in the bottom soil of the paddy field, and in this state, weeding for the paddy field is performed. A method for controlling weeds in a paddy field, which comprises moving the tool appropriately by an operation from the outside of the paddy field to entangle the weed with the bulging portion and remove the weed. 請求項9記載の水田雑草防除方法において、前記水田用除草具を、前記水田に入ることなく該水田の外から人力若しくは動力により引動して移動させることを特徴とする水田雑草防除方法。 The paddy field weed control method according to claim 9, wherein the paddy field weed control tool is moved by being pulled from outside the paddy field by human power or power without entering the paddy field. 請求項9,10いずれか1項に記載の水田雑草防除方法において、前記水田用除草具により前記水田内の雑草を除去する前に、予め前記水田に菜種油粕若しくは米ぬかを施用することを特徴とする水田雑草防除方法。 The paddy field weed control method according to any one of claims 9 and 10, characterized in that rapeseed oil cake or rice bran is applied to the paddy field in advance before the weeds in the paddy field are removed by the paddy field weed control tool. How to control paddy weeds.
JP2019048492A 2019-03-15 2019-03-15 Weeding tools for paddy fields and weed control methods for paddy fields Active JP6970449B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2019048492A JP6970449B2 (en) 2019-03-15 2019-03-15 Weeding tools for paddy fields and weed control methods for paddy fields

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2019048492A JP6970449B2 (en) 2019-03-15 2019-03-15 Weeding tools for paddy fields and weed control methods for paddy fields

Publications (2)

Publication Number Publication Date
JP2020146009A JP2020146009A (en) 2020-09-17
JP6970449B2 true JP6970449B2 (en) 2021-11-24

Family

ID=72429045

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2019048492A Active JP6970449B2 (en) 2019-03-15 2019-03-15 Weeding tools for paddy fields and weed control methods for paddy fields

Country Status (1)

Country Link
JP (1) JP6970449B2 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0412937Y2 (en) * 1986-02-15 1992-03-26
JP5449519B1 (en) * 2012-12-28 2014-03-19 株式会社 ごはん Weed control equipment
JP5657826B1 (en) * 2013-12-05 2015-01-21 株式会社オスカエンジニアリング Unmanned driving boat for paddy field weeding, unmanned driving boat for collecting floating substances, and paddy field weeding method

Also Published As

Publication number Publication date
JP2020146009A (en) 2020-09-17

Similar Documents

Publication Publication Date Title
US7597055B2 (en) Agricultural machine for crop interseeding
Jiaguo et al. The system of rice intensification (SRI) for super-high yields in rice in Sichuan Basin
JP6970449B2 (en) Weeding tools for paddy fields and weed control methods for paddy fields
KR20120002016U (en) A pad for plant seedling cover have a weeds grow suppression function
KR20090067892A (en) Terrace cultivation device for farm produce
JP3279538B2 (en) Cultivation container and cultivation method using the same
Haider Pros and Cons of Mechanized Transplanting in Basmati Rice-A Case Study
AU2011100087A4 (en) A Method of Treating Soil Including Applying a Soil Wetting Agent
KR200242455Y1 (en) The breeding box of rice-seed for young rice plant to be dispersed
JP2010239895A (en) Method for weeding paddy field
Farooq et al. Diffusion possibilities of mechanical rice transplanters
KR100841897B1 (en) Box for seedling culture
Karthik et al. Design and fabrication of hybrid rice seedling transplanter
JP2007097410A (en) Weeding apparatus
JP2002034305A (en) Weeder for paddy
KR200432494Y1 (en) A Seedbed mat for transplant rice
JP2019004716A (en) Cultivation container
KR100794577B1 (en) A seedbed mat and removal method for transplant rice
Abdunazarov et al. Small-scale mechanization in vegetable growing
KR100538951B1 (en) A receptacle for sprout vegetables
JP4570411B2 (en) Seedling cultivation equipment
CN2543330Y (en) Multi-purpose plough type seeder
GAIKWAD et al. Performance of Four Row Self Propelled Walking Type Paddy Transplanter
Mathanker et al. Ridge seeding of pre-germinated rice in puddle fields
JP2001016932A (en) Growing of long seedling and reversing transplanter of long seedling

Legal Events

Date Code Title Description
RD04 Notification of resignation of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7424

Effective date: 20190607

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20201215

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20210907

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20210927

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20211022

R150 Certificate of patent or registration of utility model

Ref document number: 6970449

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150