JPS6345176B2 - - Google Patents
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- Publication number
- JPS6345176B2 JPS6345176B2 JP19847584A JP19847584A JPS6345176B2 JP S6345176 B2 JPS6345176 B2 JP S6345176B2 JP 19847584 A JP19847584 A JP 19847584A JP 19847584 A JP19847584 A JP 19847584A JP S6345176 B2 JPS6345176 B2 JP S6345176B2
- Authority
- JP
- Japan
- Prior art keywords
- soil
- nematodes
- voltage
- base voltage
- crops
- 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
Links
- 241000244206 Nematoda Species 0.000 claims description 38
- 239000002689 soil Substances 0.000 claims description 33
- 238000000034 method Methods 0.000 claims description 10
- 230000000694 effects Effects 0.000 description 10
- 230000006378 damage Effects 0.000 description 8
- 239000000126 substance Substances 0.000 description 7
- 230000012010 growth Effects 0.000 description 4
- 241000341511 Nematodes Species 0.000 description 3
- 230000002411 adverse Effects 0.000 description 3
- 238000003306 harvesting Methods 0.000 description 3
- 244000005700 microbiome Species 0.000 description 3
- 230000024241 parasitism Effects 0.000 description 3
- 241000227653 Lycopersicon Species 0.000 description 2
- 235000007688 Lycopersicon esculentum Nutrition 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009931 harmful effect Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 241000238631 Hexapoda Species 0.000 description 1
- 206010067482 No adverse event Diseases 0.000 description 1
- 238000012271 agricultural production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000004071 biological effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- LFHISGNCFUNFFM-UHFFFAOYSA-N chloropicrin Chemical compound [O-][N+](=O)C(Cl)(Cl)Cl LFHISGNCFUNFFM-UHFFFAOYSA-N 0.000 description 1
- 241001233061 earthworms Species 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 238000003958 fumigation Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 230000008635 plant growth Effects 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 230000002940 repellent Effects 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Landscapes
- Catching Or Destruction (AREA)
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、主に作物の根に寄生して当該作物の
発育不良等を生じさせる線虫類の駆除方法に関す
る。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for exterminating nematodes that mainly parasitize the roots of crops and cause poor growth of the crops.
［従来の技術］
最近の無機化学肥料の大量散布による収穫量の
増大を図る農法において、大きな問題となつてい
るのが線虫類による被害である。とりわけ、ハウ
ス栽培による農業生産においては、農地の利用効
率を上げるために作物の作付サイクルの固定化を
きたしており、線虫類による被害を受けやすい状
態にある。線虫類は、主に作物の根に寄生するも
ので、作物に線虫類が寄生すると、根に瘤状の奇
形症状が生じ、地上茎部への養分の供給が妨げら
れて発育不良を起し、生産物の品質が著しく低下
したり、収穫が皆無の状態となることもしばしば
生じている。[Prior Art] In recent agricultural methods that aim to increase yields by spraying large quantities of inorganic chemical fertilizers, damage caused by nematodes has become a major problem. In particular, agricultural production through greenhouse cultivation has a fixed cropping cycle in order to increase the efficiency of farmland use, making it susceptible to damage from nematodes. Nematodes mainly parasitize the roots of crops, and when crops are infested with nematodes, malformed knob-like symptoms occur on the roots, which prevents the supply of nutrients to the above-ground stems, resulting in poor growth. However, the quality of the produce often deteriorates significantly, or there are cases where there is no harvest at all.
従来、上記線虫類の寄生から作物を守る方法と
しては、作物を定植する前に、クロールピクリン
による土壌の薬品燻蒸や、高温蒸気の吹き込みに
よる土壌消毒を行うことが知られている。また、
土壌の客土や焼土を行うことも知られている。 Conventionally, as a method of protecting crops from parasitism by the above-mentioned nematodes, it is known to perform chemical fumigation of the soil with chlorpicrin or disinfection of the soil by blowing high-temperature steam before planting the crops. Also,
It is also known that soil is removed or baked.
しかしながら、上記従来の駆除方法は、いずれ
も線虫類の寄生を予防するために作物の作付前に
行う方法でしかない。作物の作付後にこれらを行
うと、作物自体をも傷めてしまうことになるの
で、作物の作付後に線虫類の寄生が発生してしま
つた場合には全く無力であると言える。また、い
ずれの方法も作業性並びに経済性に劣り、農家の
大きな負担となつているばかりか、薬品を使用す
る場合には、処理後の残留薬品による育成障害の
危険性もある。更には、有益な土壌微生物も消滅
させ、土壌の活性を劣化させて土壌の生態系を破
壊してしまい、長期間を経なければ土壌が植物の
生育適正環境に回復しなくなつて、結局作物の良
好な生育が得られないことも生ずる。 However, all of the conventional extermination methods described above are only methods that are carried out before planting crops to prevent nematode parasitism. If you do these things after planting crops, you will also damage the crops themselves, so if nematode parasitism occurs after planting crops, it can be said that you are completely helpless. In addition, both methods are inferior in workability and economic efficiency, and are a heavy burden on farmers. In addition, when chemicals are used, there is a risk that the chemicals remaining after treatment may cause growth problems. Furthermore, beneficial soil microorganisms also disappear, soil activity deteriorates, and the soil ecosystem is destroyed, and the soil cannot be restored to an appropriate environment for plant growth until a long period of time passes, resulting in the loss of crops. There may also be cases where good growth cannot be obtained.
［発明が解決しようとする問題点］
本発明は作物の作付後であつても、残留薬品や
土壌生態系の破壊による弊害を生じさせることな
く確実に線虫類の駆除ができるようにすることを
その解決すべき問題点とするものである。[Problems to be solved by the invention] An object of the present invention is to ensure that nematodes can be exterminated even after crops have been planted, without causing harmful effects due to residual chemicals or destruction of the soil ecosystem. is the problem to be solved.
［問題点を解決するための手段］
本発明において上記問題点を解決するために講
じられた手段は、直流のベース電圧を間欠的に土
壌に印加すると同時に、このベース電圧印加時に
ベース電圧と正負方向を揃えた高電圧パルスを土
壌に印加する線虫類の駆除方法とすることにあ
る。[Means for Solving the Problems] The means taken to solve the above problems in the present invention is to apply a DC base voltage intermittently to the soil, and at the same time, when applying the base voltage, The object of the present invention is to provide a method for exterminating nematodes by applying high voltage pulses in the same direction to the soil.
［作用］
本発明において、直流のベース電圧は、線虫類
の体内に直流電源を生じさせてその水分を電気分
解し、細胞破壊に導いて線虫類を弱らせる作用を
成すと考えられる。また、高電圧パルスは、これ
によつて発生するシヨツク電流の衝撃によつて線
虫類を駆除する作用を成すもので、前記ベース電
圧とこの高電圧パルスが相俟つて、ベース電圧の
印加によつて線虫類を弱らせ、そしてこの弱つた
線虫類を高電圧パルスの印加による衝撃で確実に
死滅させるものと考えられる。[Function] In the present invention, the DC base voltage is thought to have the effect of generating a DC power source in the body of the nematode, electrolyzing its water, leading to cell destruction, and weakening the nematode. . In addition, the high voltage pulse has the effect of exterminating nematodes by the impact of the shock current generated by the high voltage pulse, and the base voltage and this high voltage pulse combine to cause the base voltage to be applied. It is thought that this weakens the nematodes and ensures that the weakened nematodes are killed by the impact caused by the application of the high voltage pulse.
一方、本発明は、駆除手段が電流であるので、
薬品のように残留の心配は皆無であるばかりか、
電流に対して比較的抵抗力のある微生物の生物活
動は維持されるので、土壌の生態系を大きく損う
心配もない。また、作物に対する悪影響もほとん
どないことが確認されている。これは、土壌に電
圧を加えるといつてもそれほど長時間ではなく、
またそれによつて生じる電流も微弱なためである
と共に、微生物と植物では生物的特質が相違する
ためと考えられる。 On the other hand, in the present invention, since the exterminating means is an electric current,
Not only is there no need to worry about residue like with chemicals, but
Since the biological activities of microorganisms that are relatively resistant to electric current are maintained, there is no need to worry about major damage to the soil ecosystem. It has also been confirmed that there are almost no negative effects on crops. This means that whenever a voltage is applied to the soil, it is not for a very long time;
It is also thought that this is because the current generated by this is weak, and also because microorganisms and plants have different biological characteristics.
［実施例］
第１図に示されるように、土壌１内に一対の電
気端子２ａ，２ｂを埋設しておき、両電気端子２
ａ，２ｂに電圧発生器３から所定の電圧を加える
ことにより、電気端子２ａ，２ｂ間の土壌１にベ
ース電圧と高電圧パルスを印加することができ
る。この場合、図示されるように、両電気端子２
ａ，２ｂを棒状とし、先端を石突き状としておく
と、地表面から押し込むだけで容易に電気端子２
ａ，２ｂを土壌１内に埋設できる利点がある。[Example] As shown in FIG. 1, a pair of electrical terminals 2a and 2b are buried in soil 1, and both electrical terminals 2
By applying a predetermined voltage from the voltage generator 3 to the terminals a and 2b, a base voltage and a high voltage pulse can be applied to the soil 1 between the electric terminals 2a and 2b. In this case, as shown, both electrical terminals 2
If a and 2b are rod-shaped and the tip is shaped like a stone, you can easily connect the electric terminal 2 by simply pushing it in from the ground surface.
There is an advantage that a and 2b can be buried in the soil 1.
作物４の作付後に線虫類の駆除を行う場合、図
示されるようにその根５を挟んで両電気端子２
ａ，２ｂを埋設することが好ましい。線虫類は広
く土壌１内に分布しているが、特に根５の周辺部
に多く集まるので、これを確実に駆除できるよう
にするためである。また、作物の作付前に予防的
に線虫類を駆除する場合には作付予定位置付近を
選択して電気端子２ａ，２ｂを埋設すればよい。 When exterminating nematodes after planting the crop 4, connect both electrical terminals 2 with the roots 5 in between, as shown in the figure.
It is preferable to bury a and 2b. Although nematodes are widely distributed in the soil 1, they especially gather in large numbers around the roots 5, so this is to ensure that they can be exterminated. Furthermore, in the case of preventive extermination of nematodes before planting crops, the vicinity of the planned planting position may be selected and the electrical terminals 2a, 2b may be buried.
電気端子２ａ，２ｂを介して土壌１に印加され
るベース電圧は直流電圧である。これは、線虫類
の体内での電気分解作用を促進させるためであ
る。ベース電圧の強さは、100〜800Vが好まし
く、特に400〜500Vが適している。ベース電圧が
低すぎると十分な線虫類の駆除効果が得にくくな
り、逆に高過ぎると作物への悪影響の危険が生ず
る。この直流のベース電圧としては、定常電圧で
もよいが、比較的高圧のものを得やすい半波又は
全波整流電圧が好ましい。また、ベース電圧の印
加は間欠的に行われるもので、１〜20秒程度、特
に５〜10秒程度印加した後休止すること繰返すよ
うにすることが好ましい。ベース電圧の印加時間
が短か過ぎると線虫類の駆除効果が得にくくな
り、逆に長過ぎると作物への悪影響が出やすくな
る。また、休止時間は印加時間にもよるが、一般
的には数秒程度である。 The base voltage applied to the soil 1 via the electrical terminals 2a, 2b is a DC voltage. This is to promote electrolysis within the body of the nematode. The strength of the base voltage is preferably 100 to 800V, particularly 400 to 500V. If the base voltage is too low, it will be difficult to obtain a sufficient nematode extermination effect, and if it is too high, there will be a risk of adverse effects on crops. Although a steady voltage may be used as the DC base voltage, a half-wave or full-wave rectified voltage is preferable because it is easy to obtain a relatively high voltage. Further, the base voltage is applied intermittently, and it is preferable to repeatedly apply the base voltage for about 1 to 20 seconds, particularly about 5 to 10 seconds, and then pause. If the application time of the base voltage is too short, it will be difficult to obtain a nematode extermination effect, and if it is too long, the crops will be more likely to be adversely affected. Further, although the pause time depends on the application time, it is generally about several seconds.
上記ベース電圧の印加時に、ベース電圧と正負
方向を揃えた高電圧パルスを電圧発生器３から電
気端子２ａ，２ｂを介して土壌１に印加する。ベ
ース電圧と正負方向を揃えるのは、ベース電圧に
よる電気分解作用を妨げることなく線虫類にシヨ
ツク電流を作用させるためである。この高電圧パ
ルスの強さは、2000〜7000V、特に4000〜5000V
が好ましい。電圧が低過ぎるとベース電圧との十
分な相乗効果が得にくくなり、逆に高くしても電
力の消費量が増大するだけで駆除効果はさほど向
上しない。高電圧パルスも、高電圧のものを得や
すいことから交流電圧を昇圧して整流したものが
好ましく、１秒間に数回から数十回の速度で印加
することが好ましい。 When applying the base voltage, a high voltage pulse whose positive and negative directions are aligned with the base voltage is applied from the voltage generator 3 to the soil 1 via the electric terminals 2a and 2b. The reason for aligning the positive and negative directions with the base voltage is to allow a shock current to act on the nematodes without interfering with the electrolytic action caused by the base voltage. The strength of this high voltage pulse is 2000~7000V, especially 4000~5000V
is preferred. If the voltage is too low, it will be difficult to obtain a sufficient synergistic effect with the base voltage, and conversely, even if it is increased, the power consumption will only increase and the extermination effect will not improve much. The high-voltage pulse is preferably one obtained by boosting and rectifying an alternating current voltage because it is easy to obtain a high-voltage pulse, and it is preferable to apply the pulse at a rate of several to several tens of times per second.
上述の高電圧パルスの印加は、ベース電圧に重
畳して行うようにすることが好ましい。即ち、ベ
ース電圧が定常電圧であるときには、ベース電圧
の印加時に高電圧パルスを印加すれば自然に重畳
して印加されるが、ベース電圧が半波又は全波整
流電圧の場合、第２図ａ，ｂに示されるように、
ベース電圧のピーク時Vbに高電圧パルスVpを発
生させて両者を重畳して印加することが好まし
い。両電圧を印加することによる相乗効果を得や
すくするためである。そして、このようなベース
電圧印加時に高電圧パルスを印加する操作を、数
分から数十分の間印加と休止を交互に繰返しなが
ら行うことが好ましい。 It is preferable that the above-mentioned high voltage pulse is applied while being superimposed on the base voltage. That is, when the base voltage is a steady voltage, if a high voltage pulse is applied at the same time as the base voltage is applied, they will be applied naturally in a superimposed manner, but if the base voltage is a half-wave or full-wave rectified voltage, the voltage pulse shown in Figure 2a ,b, as shown in
It is preferable to generate a high voltage pulse V p at the peak time V b of the base voltage and apply the two in a superimposed manner. This is to make it easier to obtain a synergistic effect by applying both voltages. It is preferable that the operation of applying a high voltage pulse at the time of applying the base voltage is performed while alternately applying and stopping the application for a period of several minutes to several tens of minutes.
電圧発生器３の電源としては、自動車のバツテ
リー等であつてもよいが、一般には通常の商用交
流電源等の低周波交流電源で、使用場所等に応じ
て適宜選択すればよい。また、両電気端子２ａ，
２ｂ間の間隔は、実用上必要な範囲に定められる
が、両電気端子２ａ，２ｂにベース電圧と高電圧
パルスを印加したときに数ミリアンペア程度の電
流を生じさせ得る範囲とすることが好ましい。 The power source for the voltage generator 3 may be a car battery or the like, but generally a low frequency AC power source such as a normal commercial AC power source may be selected as appropriate depending on the place of use. Moreover, both electric terminals 2a,
The distance between the two electrical terminals 2b is determined within a practically necessary range, but is preferably within a range that allows a current of about several milliamperes to be generated when a base voltage and a high voltage pulse are applied to both electrical terminals 2a and 2b.
電気端子２ａ，２ｂは、駆除の必要を生じた都
度設置してもよいが、収穫が終るまで設置したま
まにしておいて一定期間毎に駆除を行うようにし
てもよく、スイツチを入れるだけで駆除ができる
ので操作が簡単である。また、殺すことはできな
いとしても、モグラやミミズ等を追い払うことが
できるという利点もある。 The electric terminals 2a and 2b may be installed each time there is a need for extermination, but they may also be left in place until the end of harvest and extermination is performed at regular intervals, simply by turning on the switch. It is easy to operate as it can be exterminated. Also, even if it cannot be killed, it has the advantage of being able to drive away moles, earthworms, etc.
第３図ないし第６図は、各々土壌１にベース電
圧と高電圧パルスを印加する場合の他の例を示す
ものである。 3 to 6 show other examples of applying a base voltage and a high voltage pulse to the soil 1, respectively.
第３図においては、電気端子２ａ，２ｂが板状
となつている。このような板状の電気端子２ａ，
２ｂとすれば、一度に広い範囲に亘つて電流を流
すことができ、比較的広い範囲に亘る線虫類の駆
除を行なえる利点がある。 In FIG. 3, the electrical terminals 2a, 2b are plate-shaped. Such a plate-shaped electric terminal 2a,
2b has the advantage that current can be applied over a wide range at once, and nematodes can be exterminated over a relatively wide range.
第４図においては、棒状の電気端子２ａが作物
４に近ずけて埋設されており、網や多孔板等によ
り構成される筒状の電気端子２ｂが根５を囲むよ
うにして配置されている。このようにすれば、放
射状に電流を流すことができ、線虫類に最も影響
を与えやすいその延展方向に電位を加えやすくな
る。 In FIG. 4, a rod-shaped electric terminal 2a is buried close to the crop 4, and a cylindrical electric terminal 2b made of a net, a perforated plate, or the like is arranged to surround the roots 5. In this way, it is possible to flow a current radially, making it easier to apply a potential in the direction of extension that is most likely to affect nematodes.
第５図において、電気端子２ａ，２ｂは台車６
に取付けられた円板状をなすものとなつている。
台車６を、例えばトラクター等で引くと、電気端
子２ａ，２ｂは土壌中へめり込みながら回転する
ことになる。このようにすれば、台車６をトラク
ターで引きまわすだけで線虫類の駆除を行えるの
で、広い農地であつても駆除処理が容易である。
この場合、電圧発生器（第１図における符号３）
やその他の必要な器具装置はトラクター等のけん
引車に乗せても良いが、この台車６上に乗せるこ
ともできる。 In FIG. 5, the electric terminals 2a and 2b are connected to the trolley 6
It has a disc shape attached to the.
When the trolley 6 is pulled by, for example, a tractor, the electrical terminals 2a and 2b rotate while sinking into the soil. In this way, nematodes can be exterminated simply by pulling the trolley 6 around with a tractor, so extermination can be easily carried out even in large farmlands.
In this case, the voltage generator (number 3 in Figure 1)
and other necessary equipment may be placed on a towing vehicle such as a tractor, but they may also be placed on this trolley 6.
第６図においては、棒状の電気端子２ａが土壌
１内に埋設されておる一方、他方の電気端子２ｂ
は作物４に接触されている。このようにすれば、
根５に電流を確実に加えることができるので、根
５内に侵入して寄生している線虫類の駆除が更に
確実になる。 In FIG. 6, a rod-shaped electric terminal 2a is buried in the soil 1, while the other electric terminal 2b is buried in the soil 1.
is in contact with crop 4. If you do this,
Since the current can be reliably applied to the roots 5, the nematodes that have invaded the roots 5 and become parasitic can be more reliably exterminated.
実施例 １
100V、50サイクルの交流電源を全波整流した
後、300Vに昇圧したものをベース電圧とし、あ
らかじめ線虫類の内ネコブ線虫を加えた土壌に対
し、10秒間印加５秒間休止のサイクルで５分間間
欠印加した。このベース電圧の印加時に、ベース
電圧に重畳させて2500Vの高電圧パルスを、１秒
間に50回の割合で印加し、12時間後に土壌を顕微
鏡観察したところ、約10匹中１匹の割合で生存し
ているネコブ線虫が確認された。Example 1 A 100V, 50-cycle AC power supply was full-wave rectified and then boosted to 300V as the base voltage.The base voltage was applied for 10 seconds, then paused for 5 seconds, to soil to which Nematode nematodes, a type of nematode, had been added in advance. It was applied intermittently for 5 minutes in cycles. When applying this base voltage, a high voltage pulse of 2500V was applied at a rate of 50 times per second, superimposed on the base voltage, and after 12 hours, the soil was observed under a microscope. Surviving Nekobu nematodes were confirmed.
上記土壌に対し、更に同様のベース電圧と高電
圧パルスの印加を５分間同じサイクルで行い、12
時間経過後に土壌を顕微鏡観察したところ、生存
している線虫類は確認されなかつた。 The same base voltage and high voltage pulses were further applied to the above soil in the same cycle for 5 minutes, and 12
When the soil was observed under a microscope after some time had elapsed, no living nematodes were found.
尚、電気端子は第１図で説明したような配置の
棒状のものとし、間隔100cm、深さ20cmに埋設し
た。 The electrical terminals were rod-shaped and arranged as explained in Figure 1, and were buried at a distance of 100 cm and a depth of 20 cm.
実施例 ２
ベース電圧を450V、高電圧パルスを4000Vと
した他は実施例１と同様にして10分間間欠印加を
行つた。12時間経過後に土壌を顕微鏡観察した結
果、生存している線虫類は確認されなかつた。Example 2 Intermittent application was performed for 10 minutes in the same manner as in Example 1 except that the base voltage was 450V and the high voltage pulse was 4000V. Microscopic observation of the soil after 12 hours revealed that no living nematodes were found.
実施例 ３
土壌にトマトを作付後に実施例１及び２と同じ
電圧の間欠印加を行つた。その結果、トマトには
何の悪影響も発見されず、良好な収穫が得られ
た。Example 3 After planting tomatoes in the soil, the same voltage as in Examples 1 and 2 was applied intermittently. As a result, no adverse effects were found on the tomatoes, and a good harvest was obtained.
比較例 １
100V、50サイクルの交流電源をそのまま500V
に昇圧しただけのものを、実施例１と同様の土壌
に対し実施例１と同様の電気端子配置で５分間連
続して印加した。この交流出力と共に、4000Vの
高電圧パルスを１秒間に50回の割合で印加し、印
加作業終了直後に土壌を顕微鏡観察したところ、
加えてあつたネコブ線虫はいずれも静止状態にあ
つた。更に12時間経過後に再び顕微鏡観察したと
ころ、ほとんどのネコブ線虫が再び活動を開始し
ていることが確認された。Comparative example 1 100V, 50 cycle AC power supply is 500V as it is
The pressure was increased to 100% and was continuously applied to the same soil as in Example 1 for 5 minutes using the same electrical terminal arrangement as in Example 1. Along with this AC output, a high voltage pulse of 4000V was applied at a rate of 50 times per second, and the soil was observed under a microscope immediately after the application was completed.
In addition, all of the warm Nematodes were in a quiescent state. After another 12 hours, microscopic observation was performed again, and it was confirmed that most of the nematodes had started to become active again.
比較例 ２
100V、50サイクルの交流電源をそのまま500V
に昇圧しただけのものをベース電圧とし、高電圧
パルスは4000Vとして、実施例１と同様にして５
分間間欠印加した。この印加中、ネコブ線虫は忌
避している様子が見え動かなくなつたが、印加終
了後12時間後に顕微鏡観察したところ、約10匹中
６匹の割合で生存しているネコブ線虫が確認され
た。Comparative example 2 100V, 50 cycle AC power supply is 500V as it is
As in Example 1, the base voltage was set to 4000V, and the high voltage pulse was set to 4000V.
It was applied intermittently for minutes. During this application, the Nematode nematodes appeared to be repellent and became motionless; however, when observed under a microscope 12 hours after the application ended, approximately 6 out of 10 Nematode Nematodes were found to be alive. It was done.
［発明の効果］
本発明によれば、作物に悪影響を及ぼす心配が
ないので、作物の作付前後を問わず線虫類を駆除
することができ、残留薬品や土壌生態系破壊によ
る弊害の危険もない。また、電気端子を介して電
圧を印加するだけで駆除を行うことができるの
で、駆除作業も容易で経済的負担も小さい。従つ
て、近年大きくなりつつある線虫類による被害の
防止に極めて有益なものである。[Effects of the Invention] According to the present invention, there is no risk of adverse effects on crops, so nematodes can be exterminated before or after crop planting, and there is no risk of harmful effects due to residual chemicals or destruction of the soil ecosystem. do not have. In addition, since insects can be exterminated simply by applying a voltage through an electric terminal, extermination work is easy and the economic burden is small. Therefore, it is extremely useful for preventing damage caused by nematodes, which have been increasing in size in recent years.
第１図は本発明の方法によつて線虫類の駆除を
行う場合の一例を示す説明図、第２図ａ，ｂは
各々ベース電圧に高電圧パルスを重畳させる場合
の電圧波形図、第３図ないし第６図は各々本発明
の方法によつて線虫類の駆除を行う場合の他の例
を示す説明図である。
１：土壌、２ａ，２ｂ：電気端子、３：電圧発
生器、４：作物、５：根、６：台車。
FIG. 1 is an explanatory diagram showing an example of exterminating nematodes by the method of the present invention, FIGS. 2 a and b are voltage waveform diagrams when a high voltage pulse is superimposed on the base voltage, and FIG. 3 to 6 are explanatory views showing other examples of exterminating nematodes by the method of the present invention. 1: soil, 2a, 2b: electrical terminal, 3: voltage generator, 4: crop, 5: root, 6: trolley.
Claims (1)
と同時に、このベース電圧印加時にベース電圧と
正負方向を揃えた高電圧パルスを土壌に印加する
ことを特徴とする線虫類の駆除方法。1. A method for exterminating nematodes, which comprises intermittently applying a DC base voltage to the soil, and at the same time applying a high voltage pulse whose positive and negative directions are aligned with the base voltage when applying the base voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19847584A JPS6178340A (en) | 1984-09-25 | 1984-09-25 | Control of nematodes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19847584A JPS6178340A (en) | 1984-09-25 | 1984-09-25 | Control of nematodes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6178340A JPS6178340A (en) | 1986-04-21 |
| JPS6345176B2 true JPS6345176B2 (en) | 1988-09-08 |
Family
ID=16391723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19847584A Granted JPS6178340A (en) | 1984-09-25 | 1984-09-25 | Control of nematodes |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6178340A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07227172A (en) * | 1994-02-18 | 1995-08-29 | Murakami Shokai:Kk | Marine product-breeding apparatus |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62259533A (en) * | 1986-05-02 | 1987-11-11 | 三共有機株式会社 | Soil sterilizing method |
| US4782623A (en) * | 1988-01-27 | 1988-11-08 | Daniel J. Bondy | Method and apparatus for termite control |
| JP4560640B2 (en) * | 2005-04-28 | 2010-10-13 | 独立行政法人国立高等専門学校機構 | Plant cultivation method with pest control |
-
1984
- 1984-09-25 JP JP19847584A patent/JPS6178340A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07227172A (en) * | 1994-02-18 | 1995-08-29 | Murakami Shokai:Kk | Marine product-breeding apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6178340A (en) | 1986-04-21 |
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