CN109907065A - A kind of fumigant and its application method for preventing and treating cacac moth - Google Patents
A kind of fumigant and its application method for preventing and treating cacac moth Download PDFInfo
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- CN109907065A CN109907065A CN201910259957.0A CN201910259957A CN109907065A CN 109907065 A CN109907065 A CN 109907065A CN 201910259957 A CN201910259957 A CN 201910259957A CN 109907065 A CN109907065 A CN 109907065A
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- ethyl formate
- methyl
- fumigant
- isorhodanate
- cacac moth
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Abstract
The present invention provides a kind of fumigant and its application method for preventing and treating cacac moth, percentagewises, which mixed by 5~15% methyl-isorhodanates and 85~95% Ethyl formates.The present invention prevents and treats storage pest cacac moth using the intermixture of Ethyl formate and methyl-isorhodanate, wherein Ethyl formate has preferable killing effect to larva and adult；Methyl-isorhodanate can on leaf vegetables self-assembling formation, nematode, fungi and other diseases on vegetables and fruit are mainly prevented and treated as soil fumigant.And there is apparent synergistic function between methyl-isorhodanate and Ethyl formate, the Ethyl formate application concentration for reducing Ethyl formate mixed with methyl-isorhodanate, the usage amount for effectively reducing Ethyl formate makes the concentration of Ethyl formate be down to combustion threshold hereinafter, improving its security performance.
Description
Technical field
The present invention relates to a kind of fumigant and its application method for preventing and treating cacac moth, belong to agriculture pest control techniques neck
Domain.
Background technique
Cacac moth Ephestia elutella (H ü bner) belongs to Lepidoptera (Lepidoptera) Pyralidae
(Pyralidae) it is global storage pest, in China in addition to Tibet, is found in the tabacco barn in other areas, tobacco powder
Snout moth's larva is to endanger one of primary pest of tobacco, directly or indirectly endangers the tobacco leaf of storage phase, is mainly dived in tobacco leaf by larva
The harm of feeding mesophyll is lied prostrate, causes tobacco leaf to decline at silk rate, the pollution of worm sources foreign matter in addition, under keeping quality of tobacco quality serious
Drop.Currently, fumigation control is still the main path for controlling tobacco powder sp harm.Hydrogen sulfide fumigant is storing field control storehouse
The routine techniques of pest is stored up, but in recent years, the insect with Phosphine Resistance is worldwide by wide coverage, in order to cope with
The challenge of Phosphine Resistance, Developing Green prevention and control are one of the hot spots studied at present, filter out less toxic protective agent, and are had latent
The grain fumigating substituting agent of power is most important.
Ethyl formate (EF) is as a kind of traditional fumigant, now as the substitute of high poison chemical fumigant by again
It assesses, Ethyl formate has many advantages, such as low toxicity, noresidue as grain storage fumigant, it has no adverse effects to grain storage and environment, but
It is easy to reach the combustion threshold (84-91mg/L) of Ethyl formate in practical application.Methyl-isorhodanate (MITC) can be in leaf vegetables
Self-assembling formation on class vegetables mainly prevents and treats nematode, fungi and other diseases on vegetables and fruit as soil fumigant.Cause
This, researching and developing one kind can effectively prevent cacac moth insect pest in tabacco barn to influence, and the insecticide with environmental-protecting performance, have
Significance and application value.
Summary of the invention
That the purpose of the present invention is to provide a kind of safeties is good, environmental pollution is small, the lower prevention and treatment tobacco of control cost
The fumigant and its application method of powder snout moth's larva, the fumigant have preferable killing effect to the larva of cacac moth and adult, and
The Ethyl formate application concentration for reducing Ethyl formate mixed with methyl-isorhodanate, effectively reduces the usage amount of Ethyl formate,
The concentration of Ethyl formate is set to be down to combustion threshold hereinafter, improving its security performance.
Technical solution of the present invention: a kind of fumigant for preventing and treating cacac moth is percentagewised, which is by 5
~15% methyl-isorhodanate and 85~95% Ethyl formates mix.
Preferably, percentagewise, the fumigant be by 5% methyl-isorhodanate and 95% Ethyl formate mixing and
At.
Preferably, percentagewise, the fumigant be by 10% methyl-isorhodanate and 90% Ethyl formate mixing and
At.
Preferably, percentagewise, the fumigant be by 15% methyl-isorhodanate and 85% Ethyl formate mixing and
At.
Meanwhile the present invention also provides a kind of application method of fumigant using above-mentioned prevention and treatment cacac moth, this method will
For fumigant for preventing and treating cacac moth, fumigating as temperature is 20~30 DEG C, 1~10 day a length of when fumigating.
Due to the adoption of the above technical scheme, the present invention has the advantages that the present invention uses Ethyl formate and isothiocyanic acid first
The intermixture of ester prevents and treats storage pest cacac moth, wherein Ethyl formate has preferable killing effect to larva and adult；Different sulphur
Methyl-cyanate can on leaf vegetables self-assembling formation, mainly prevented and treated as soil fumigant nematode on vegetables and fruit,
Fungi and other diseases.And have apparent synergistic function between methyl-isorhodanate and Ethyl formate, Ethyl formate with
The mixed application concentration that can reduce Ethyl formate of methyl-isorhodanate, effectively reduces the usage amount of Ethyl formate, makes Ethyl formate
Concentration be down to combustion threshold hereinafter, improving its security performance.
Specific embodiment
In order to keep the object of the invention, technical solution and advantage clearer, the present invention is made into one below with reference to embodiment
The detailed description of step.
Embodiment 1
The present embodiment uses the closed fumigating system of wide-mouth bottle.Said preparation uses 95%EF+5%MITC, 90%EF+10%
MITC, 85%EF+15%MITC, V/W.Temperature is (25 ± 1) DEG C, humidity is (75 ± 5) %, the photoperiod is 14L:10D's
In constant incubator, under the conditions of the time is 5d, 5 concentration gradients is set separately and carry out suffocating treatment.Method particularly includes: first by 20
First 3 instar larvae is put into the plastics finger-type pipe of 50mL (diameter 2.7cm), and is put into 10g crumbled tobacco, and nozzle is sealed with nylon gauze
To prevent test worm escape, finger-type pipe is then packed into the wide-mouth bottle of 1L and is packed into 0.5 jin of untreated tobacco leaf, then by quantitative for examination
Medicament drips on the filter paper of stifling box (d=2cm, h=1cm) bottom, is then rapidly wrapped box with nylon gauze, is placed in wide
Mouth top of bottle, the sealing of blend compounds band.Wide-mouth bottle is placed in the incubator for be previously set temperature and is fumigated, each processing supplies
Examination larva 30,3 repetitions, and set blank control, air-dispersing for 24 hours after inspection record dead larvae number.
Wherein, the mixed fumigation agent of different proportion composition is shown in Table 1 the virulence of 3 instar larvae of cacac moth, this patent
In embodiment, using the Probit simulation fitting toxicity regression equation of SPSS17.0 software, various medicaments are calculated to cacac moth
LC50Value and 95% confidence interval.
Table 1EF is individually fumigated and with MITC different proportion mixed fumigation to 3 instar larvae virulence of cacac moth
As shown in table 1, virulence is up to 85%EF+15%MITC, and LC50 is 18.32 μ L/L, the minimum EF of virulence,
LC50 is 56.32 μ L/L, and under the conditions of same temperature, time are stifling, the novel formulation of EF and MITC composition is to 3 age of cacac moth children
The virulence of worm increases with the increase of MITC ratio.
Embodiment 2
According to 5 concentration and blank control group of 85%EF and 15%MITC in embodiment 1, setting time 1d, 2d, 3d,
4d, 5d, 6d, 7d, 3 instar larvae of suffocating treatment cacac moth, for examination adult 30,3 repetitions, air-dispersing is examined afterwards for 24 hours for each processing
Dead larvae number is looked into, median lethal time LT is calculated50。
Wherein, the median lethal time of 3 instar larvae of cacac moth is shown in the mixed fumigation agent that 85%EF and 15%MITC is formed
Shown in table 2, in this patent embodiment, using the Probit simulation fitting toxicity regression equation of SPSS17.0 software, calculate various
LT of the medicament to cacac moth50And 95% confidence interval.
2 85%EF+15%MITC of table is under various concentration to 3 instar larvae median lethal time (LT of cacac moth50)
As shown in table 2,85%EF+15%MITC under various concentration to 3 instar larvae median lethal time of cacac moth with
The increase of concentration and reduce, concentration be 25 μ L/L when, median lethal time (LT50) 4.99 days.
Embodiment 3
The other cacac moth adult of 500 Combination is acquired in the device for collecting ovum, collects ovum after it is laid eggs 2 days,
And shift ovum in the 50mL plastics finger-type pipe for having 10g tobacco leaf, 50 ovum of every finger-type pipe, nozzle with nylon gauze seal to prevent
Test worm escape, is placed in that temperature is (25 ± 1) DEG C, humidity is (75 ± 5) %, raises in the constant incubator that the photoperiod is 14L:10D
It supports, inspects periodically larvae development, pupates and pupa emergence situation, select age consistent low instar larvae, high instar larvae, pupa and adult
Fumigation activity is carried out to probe into.The wide-mouth bottle of 3 loading 1L is taken at random and is packed into the untreated tobacco leaf of 0.25kg, it is close rapidly after dosing
Envelope, is placed in climate box and is fumigated, and set blank control, and concentration for the treatment of sets 5 (15 μ L/L, 25 μ L/L, 35 μ L/L, 45 μ
L/L, 55 μ L/L) concentration gradient.Air-dispersing for 24 hours after inspection record each worm state death toll.
Wherein, 85%EF is shown in Table compared with the mixed fumigation agent that 15%MITC is formed is to each worm state fumigation activity of cacac moth
Shown in 3, in this patent embodiment, the death rate (%)=(borer population living after the preceding borer population-processing living of processing)/borer population of living before processing ×
100；Corrected mortality (%)=(the processing death rate-control death rate)/(1- compares the death rate) × 100.
Comparison of the 85%EF+15%MITC to each worm state fumigation activity of cacac moth under 3 various concentration of table
As shown in table 3, the concentration of 85%EF+15%MITC mix preparation be 35 μ L/L when, 3 instar larvae of cacac moth, pupa,
3 worm state death rates of adult all reach 80% or more, and it is preferable to illustrate that said preparation has 33 instar larvaes, pupa, adult worm states
Fumigation activity.
Those skilled in the art can use for reference the links such as the appropriate feed change of the contents of the present invention, process conditions to realize phase
The other purposes answered, correlation change all without departing from the contents of the present invention, and all similar substitutions and modifications are for this field
It is it will be apparent that being considered as being included within the scope of the present invention for technical staff.
Claims (5)
1. a kind of fumigant for preventing and treating cacac moth, it is characterised in that: percentagewise, which is different by 5~15%
Methyl-rhodanide and 85~95% Ethyl formates mix.
2. the fumigant of prevention and treatment cacac moth according to claim 1, it is characterised in that: percentagewise, this is stifling
Agent is mixed by 5% methyl-isorhodanate and 95% Ethyl formate.
3. the fumigant of prevention and treatment cacac moth according to claim 1, it is characterised in that: percentagewise, this is stifling
Agent is mixed by 10% methyl-isorhodanate and 90% Ethyl formate.
4. the fumigant of prevention and treatment cacac moth according to claim 1, it is characterised in that: percentagewise, this is stifling
Agent is mixed by 15% methyl-isorhodanate and 85% Ethyl formate.
5. a kind of application method using the fumigant for preventing and treating cacac moth described in Claims 1 to 4 any one, feature
It is: fumigant is used to prevent and treat cacac moth, fumigating as temperature is 20~30 DEG C, 1~10 day a length of when fumigating.
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| CN201910259957.0A CN109907065A (en) | 2019-04-02 | 2019-04-02 | A kind of fumigant and its application method for preventing and treating cacac moth |
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| CN201910259957.0A CN109907065A (en) | 2019-04-02 | 2019-04-02 | A kind of fumigant and its application method for preventing and treating cacac moth |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114561411A (en) * | 2022-03-14 | 2022-05-31 | 贵州大学 | Dicer1 gene and application of dsRNA thereof in pest control |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19651705A1 (en) * | 1996-12-12 | 1998-06-18 | Angermeier S Schaedlingsbekaem | Method for eradicating insect pests in churches, factories, food stores, etc. |
| WO2003061384A1 (en) * | 2002-01-25 | 2003-07-31 | Boc Gases Australia Limited | Fumigant formulation |
| CN101102670A (en) * | 2004-12-24 | 2008-01-09 | 联邦科学技术研究组织 | Pesticide compositions and methods |
| CN101507431A (en) * | 2009-01-24 | 2009-08-19 | 中国检验检疫科学研究院检测技术与装备研究所 | Novel fumigant and preparation method and use thereof |
-
2019
- 2019-04-02 CN CN201910259957.0A patent/CN109907065A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19651705A1 (en) * | 1996-12-12 | 1998-06-18 | Angermeier S Schaedlingsbekaem | Method for eradicating insect pests in churches, factories, food stores, etc. |
| WO2003061384A1 (en) * | 2002-01-25 | 2003-07-31 | Boc Gases Australia Limited | Fumigant formulation |
| CN101102670A (en) * | 2004-12-24 | 2008-01-09 | 联邦科学技术研究组织 | Pesticide compositions and methods |
| CN101507431A (en) * | 2009-01-24 | 2009-08-19 | 中国检验检疫科学研究院检测技术与装备研究所 | Novel fumigant and preparation method and use thereof |
Non-Patent Citations (3)
| Title |
|---|
| YONGLIN REN ET,AL.: "Ethyl formate plus methyl isothiocyanate-a potential liquid fumigant for stored grains", 《PEST MANAG SCI》 * |
| YONGLIN REN ET,AL.: "Fumigation of Wheat Using Liquid Ethyl Formate Plus Methyl Isothiocyanate in 50-Tonne Farm Bins", 《J. ECON. ENTOMOL.》 * |
| 乔康 等: "甲酸乙酯与异硫氰酸甲酯混用—一种有潜力的防治储粮害虫液体熏蒸剂", 《世界农药》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114561411A (en) * | 2022-03-14 | 2022-05-31 | 贵州大学 | Dicer1 gene and application of dsRNA thereof in pest control |
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Application publication date: 20190621 |