CN110463698A - A kind of sex pheromone of Grapholitha molesta synergist and preparation method thereof - Google Patents
A kind of sex pheromone of Grapholitha molesta synergist and preparation method thereof Download PDFInfo
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- CN110463698A CN110463698A CN201910763965.9A CN201910763965A CN110463698A CN 110463698 A CN110463698 A CN 110463698A CN 201910763965 A CN201910763965 A CN 201910763965A CN 110463698 A CN110463698 A CN 110463698A
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N27/00—Biocides, pest repellants or attractants, or plant growth regulators containing hydrocarbons
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N31/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic oxygen or sulfur compounds
- A01N31/08—Oxygen or sulfur directly attached to an aromatic ring system
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Abstract
The present invention discloses a kind of synergist and preparation method thereof for preventing and treating sex pheromone of Grapholitha molesta, β-ocimenum, (E)-β-farnesene and 2 of the synergist by 1:0.2:0.05,6- di-tert-butyl-4-methy phenol composition.By β-ocimenum, (E)-β-farnesene and 2, three kinds of compounds of 6- di-tert-butyl-4-methy phenol are mixed according to above-mentioned mass ratio, and the solution of prepared three kinds of compounds is added in polyvinyl chloride or polyethylene pipe with peristaltic pump；The polyvinyl chloride of filling completion or polyethylene pipe are sealed and cut every 3-5 centimetres with jaw type sealing machine again；To cut polyvinyl chloride or polyethylene pipe be placed on it is spare in refrigerator.The advantage of the invention is that trapping amount in sex pheromone of Grapholitha molesta field can be greatly improved, it can also extend the slow-release time of sex pheromone of Grapholitha molesta, and compound is nontoxic, does not injure natural enemy and noresidue, is conducive to preserve the ecological environment.
Description
Technical field
The invention belongs to biological pesticide preparation fields, particularly relate to a kind of increasing for preventing and treating sex pheromone of Grapholitha molesta
Imitate agent and preparation method thereof.
Background technique
Oriental fruit months [Grapholitha molesta (Busck)] also known as the small moth fruit moth of pears, east fruit moth moth, are one
Common moth fruit property pest in kind orchard, can cause harm a variety of fruit trees such as peach, pears, cherry.Oriental fruit months removes Tibet not in China
Outside appearing in the newspapers, each pears, peach producing region have generation, are occurred especially with North China, Central China universal.In recent years, the peach pears in China produce
Causing harm for area oriental fruit months is got worse, and has risen to primary pest.Currently, China prevention and treatment oriental fruit months relies primarily on
Fruit bagging and chemical prevention.Since the worm is caused harm, mode is hidden, and chemical control optimum period is more demanding, and chemical agent is caused to use
Frequently, persticide residue is high, generates the problems such as anti-medicine and environmental contamination.And fruit bagging is not only with high costs, but also causes
Fruit quality decline.
Therefore it is imperative to explore oriental fruit months Harmless control method.Insect sex pheromone because have it is efficient, nontoxic,
Noresidue does not injure the features such as natural enemy, becomes current internationally recognized environment protective plant protecting technology.Artificial synthesized oriental fruit months property
Pheromones are applied to the prediction, mass trapping and isotropic prevention and treatment of oriental fruit months.Through long-term field investigation the study found that
When oriental fruit months population density is excessively high or other situations occur, the means of prevention using the small sex pheromone of pears is ineffective.
The trapping capability that sex pheromone of Grapholitha molesta is improved by adding other substances is the important way of oriental fruit months biological control
Diameter.
β-ocimenum and (E)-β-farnesene are the important components in oriental fruit months host's volatile matter, itself is to Lepidoptera
Insect has weaker trapping capability.Existing research, which mixes β-ocimenum and (E)-β-farnesene with terpinyl acetate, lures pears small
Heart-eating worm.But the trapping amount of such mixture is far smaller than sex pheromone of Grapholitha molesta trapping amount.
The synergistic effect that raising sex pheromone of Grapholitha molesta is used alone or as a mixture in both compounds has not been reported.Mirror
In this, we have studied increasing of two kinds of substances to sex pheromone of Grapholitha molesta in field using two kinds of compounds as synergistic matter
It is aobvious to show that β-ocimenum and (E)-β-farnesene in certain proportion have sex pheromone of Grapholitha molesta trapping capability for effect effect
Write synergistic effect.For both compounds in the oxidizable feature in field, develop with β-ocimenum, (E)-β-farnesene and 2,
Sex pheromone of Grapholitha molesta synergistic formula based on 6- di-tert-butyl-4-methy phenol mixture；It is directed to β-sweet basil simultaneously
Alkene and the volatile characteristic of (E)-β-farnesene, develop the release method of synergistic formula.
Summary of the invention
The shortcomings that in order to overcome the prior art, the present invention is with β-ocimenum, (E)-β-farnesene and 2,6- di-t-butyl -4-
Sex pheromone of Grapholitha molesta synergistic formula based on methylphenol mixture, can reach significant synergistic effect；Simultaneously
For β-ocimenum and the volatile characteristic of (E)-β-farnesene, the release method of synergistic formula is developed.
It is an object of that present invention to provide a kind of synergist of sex pheromone of Grapholitha molesta.
Another object of the present invention is to provide a kind of preparation methods of sex pheromone of Grapholitha molesta synergist.
The present invention is achieved through the following technical solutions:
The present invention provides a kind of synergist of sex pheromone of Grapholitha molesta, and the synergist is by 1:0.1-1:0.05's
β-ocimenum, (E)-β-farnesene and 2,6 di tert butyl 4 methyl phenol composition.
The sex pheromone of Grapholitha molesta synergist by β-ocimenum of 1:0.1-0.5:0.05, (E)-β-farnesene and
2,6 di tert butyl 4 methyl phenol composition.
The sex pheromone of Grapholitha molesta synergist by 1:0.2:0.05 β-ocimenum, (E)-β-farnesene and 2,6-
Di-tert-butyl-4-methy phenol composition.
Sex pheromone of Grapholitha molesta synergist of the present invention the preparation method comprises the following steps: by β-ocimenum, (E)-β-method
Alkene and 2, three kinds of compounds of 6- di-tert-butyl-4-methy phenol are mixed according to above-mentioned mass ratio, will be prepared with peristaltic pump
The solution of three kinds of good compounds is added in polyvinyl chloride or polyethylene pipe；Use jaw type sealing machine by the polychlorostyrene second of filling completion again
Alkene or polyethylene pipe are sealed and are cut every 3-5 centimetres；To cut polyvinyl chloride or polyethylene pipe be placed on it is standby in refrigerator
With.
The specification of polyvinyl chloride described in the preparation method of synergist of the present invention or polyethylene pipe is 0.6-1 millimeters of internal diameter,
0.8-1.5 millimeters of outer diameter.
The specification of the polyvinyl chloride or polyethylene pipe is preferably 0.8 millimeter of internal diameter, 1 millimeter of outer diameter.
β-the ocimenum, three kinds of compounds of (E)-β-farnesene and 2,6 di tert butyl 4 methyl phenol ratio be
Mass ratio.
The chemistry of heretofore described β-ocimenum, (E)-β-farnesene and 2,6 di tert butyl 4 methyl phenol is pure
Degree answers >=90%, commercially available, as Shanghai Aladdin biochemical technology limited liability company produces.
The compound of β-ocimenum of the present invention, (E)-β-farnesene and 2,6 di tert butyl 4 methyl phenol
Structural formula are as follows:
β-ocimenum structural formula is as follows:
(E) structural formula of-β-farnesene is as follows:
The structural formula of 2,6 di tert butyl 4 methyl phenol is as follows:
The advantages of sex pheromone of Grapholitha molesta synergist of the present invention, is:
1, sex pheromone of Grapholitha molesta field trapping amount can be greatly improved, compared with sex pheromone is used alone, is added
Add synergist that 60% or more trapping amount can be improved；
2, compound used in synergist of the present invention is nontoxic, does not injure natural enemy and noresidue, is conducive to protecting ecology ring
Border ensures food safety, ecological safety, is conducive to the sustainable development of agricultural；
3, the synergist obtained with preparation method of the present invention can extend the slow-release time of sex pheromone of Grapholitha molesta.
Detailed description of the invention
Fig. 1 are as follows: three kinds of compounds lure worm amount to compare according to do not prepare synergist on year-on-year basis.
Fig. 2 are as follows: polyvinyl chloride pipe caliber lures worm amount to influence for synergist.
The proportion screening of experimental example one, compound
The pears of three kinds of β-ocimenum, (E)-β-farnesene and 2,6 di tert butyl 4 methyl phenol compound different ratios
Small sex pheromone synergist function influence test.It the results are shown in Table 1.
Being pumped into internal diameter respectively according to mixed solution obtained after the proportion of table 1 respectively using peristaltic pump is that 1 mm outer diameter is
In 1.2 millimeters of polyethylene pipes；The polyethylene pipe of filling completion is sealed and cut every 3-5 centimetres with jaw type sealing machine again；It will
Cut polyethylene pipe is placed in refrigerator for use.
Table 1: three kinds of compound different ratios in formula
Using field trapping experiments, three kinds of compound different ratios are examined or check to sex pheromone of Grapholitha molesta synergistic effect.
When being tested, is combined using oriental fruit months property lure (Beijing Chinese Academy of Sciences animal is produced) and synergistic formula, be placed in three
In angular trapper, apart from insect-sticking plate 2cm below trapper.Trapper hangs over peach shady place, often apart from ground 1.5m at random
Spacing 20m between two trappers.3 repetitions of each processing, 4 trappers of each reuse.Simultaneously using small equipped with pears
The trapper (CK) of lure compares.Test period is 5.1-2016 5.30 in 2016, in Jinzhong City Taigu County north Wang native place
The peach garden Shen Cun carries out, and replaces insect-sticking plate weekly, and count and lure worm amount (see Fig. 1).
Available by Fig. 1, four kinds of formulas have significant synergistic effect (F=for sex pheromone of Grapholitha molesta
159.5, df=4, P < 0.01), wherein the formula synergistic effect that number is 2 is the most obvious, 80% or more is improved compared with CK.This
Experiments have shown that β-ocimenum, (E)-β-farnesene and 2,6- di-tert-butyl-4-methy phenol is with the quality of 1:0.1-1:0.05
There is synergistic effect to sex pheromone of Grapholitha molesta than mixed formula, and mass ratio is 1:0.2:0.05 synergistic effect
Most preferably.
Experimental example two: polyvinyl chloride pipe caliber influences the synergy of formula
By β-ocimenum, (E)-β-farnesene and 2,6 di tert butyl 4 methyl phenol with the mass ratio of 1:0.2:0.05
It is mixed.Mixed solution is pumped into the polyvinyl chloride pipe of different tube diameters using peristaltic pump, then will be filling with jaw type sealing machine
The polyvinyl chloride of completion every 3-5 centimetres seal and cut, will cut polyvinyl chloride pipe is placed in refrigerator for use.Examination
Caliber used is respectively internal diameter 0.8mm outer diameter 1mm (number A), internal diameter 0.8mm outer diameter 1.2mm (number B) and internal diameter in testing
Three kinds of specification polyvinyl chloride pipes of 0.8mm outer diameter 1.5mm (number C) are equipped with the trapper of the small lure of pears with using simultaneously
(CK)。
Using field trapping experiments, the caliber in synergistic formula preparation method is examined or check to sex pheromone of Grapholitha molesta synergy
Effect.When being tested, is combined, be placed in using oriental fruit months property lure and the filling synergistic blend solution in different tube diameters
In triangle trapper, apart from insect-sticking plate 2cm below trapper.Trapper hangs over peach shady place apart from ground 1.5m at random,
Spacing 20m between every two trapper.3 repetitions of each processing, 4 trappers of each reuse.Simultaneously using equipped with pears
The trapper of small lure compares.Test period is 5.15-2017 7.15 in 2017, in Jinzhong City Taigu County Shanxi Province fruit tree
It is carried out in research institute's peach resource garden, replaces insect-sticking plate weekly, and count and lure worm amount (result is shown in Fig. 2).
It is available by Fig. 2, it is combined using the formulation of synergist that different tube diameters make with sex pheromone of Grapholitha molesta
Lure worm dynamic and sex pheromone phase be used alone and lure worm dynamic similarity, lure the peak date of worm identical.Add synergistic formula
Sex pheromone totally lure worm amount to be apparently higher than to be used alone and lure worm amount equipped with pears small lure sex pheromones.It is managed in synergistic formula
Wall is thicker, and synergistic effect is not significant.Tube wall should not be too thick in synergistic formula preparation process.Therefore polyvinyl chloride pipe caliber
Most preferably internal diameter 0.8mm, outer diameter 1mm (number A) lure worm amount most.
Experimental example three: the comparative test of synergist of the present invention and patent application publication CN104381254A
By β-ocimenum, (E)-β-farnesene and 2,6 di tert butyl 4 methyl phenol with the mass ratio of 1:0.2:0.05
It is mixed.Mixed solution is pumped into internal diameter 0.8mm using peristaltic pump, in the polyvinyl chloride pipe of outer diameter 1mm, then is sealed with jaw type
The polyvinyl chloride of filling completion is sealed and is cut every 3-5 centimetres by machine, will cut to obtain polyvinyl chloride pipe (processing 1) placement
It is stand-by in refrigerator.
It carries out preparing synergist (processing 2), the poly- second for being 4mL by volume according to patent application publication CN104381254A
Alkene is centrifuged effective 95% ethyl alcohol and cleans 3 times, and ethyl alcohol volatilization is clean at room temperature, and has on the lid of polyethylene centrifuge tube with needle bundle
Diameter is the aperture of 1mm；It will be soaked with the degreasing sliver of 4cm × 1cm of 500 μ L mixture of 2000 μ L of terpinyl acetate and acetic acid again
It is placed in polyethylene centrifuge tube；With the aperture on ParafilmTM centrifuge tube lid, it is spare to be placed in -20 DEG C of refrigerators.
Using field trapping experiments, when being tested, using oriental fruit months property lure, (Beijing Chinese Academy of Sciences animal is given birth to
Produce) and synergistic formula combine, be placed in triangle trapper, apart from trapper lower section insect-sticking plate 2cm.Simultaneously using equipped with pears
The trapper (CK) of small lure compares.Trapper hangs over peach shady place apart from ground 1.5m at random, every two trapper it
Between spacing 20m.3 repetitions of each processing, 4 trappers of each reuse.Test period is 7.15-2017 in 2017
8.15, test site carries out in Jinzhong City Taigu County north Wang native place peach garden Shen Cun, replaces insect-sticking plate weekly, and finally statistics lures worm
Amount.
Table 2:
| Processing | Increasing Efficiency (%) | Lure worm total amount (average value ± standard error) |
| 1 | 94.3 | 680±57.7 |
| 2 | 43.7 | 503±36.5 |
| CK | 350±23.8 |
It can be obtained according to 2 result of table, compared with the control, synergist synergy 94.3% of the present invention, synergy in CN104381254A
Agent synergy 43.7%.The synergistic effect of synergist of the present invention is substantially better than the synergistic effect of the synergist in CN104381254A.
Specific embodiment:
The present invention is specifically described with reference to embodiments, but should not be construed as limiting the invention.
Embodiment 1:
A kind of synergist of sex pheromone of Grapholitha molesta, β-ocimenum, (the E)-β-of the synergist by 1:0.2:0.05
Farnesene and 2,6 di tert butyl 4 methyl phenol composition；By β-ocimenum, (E)-β-farnesene and 2,6- di-t-butyl -4-
Three kinds of compounds of methylphenol are mixed according to above-mentioned mass ratio, with peristaltic pump by the solution pump of prepared three kinds of compounds
Addition internal diameter is 0.8mm, and outer diameter is in the polyvinyl chloride pipe of 1mm；Use jaw type sealing machine by the polyvinyl chloride pipe of filling completion again
It seals and cuts every 3-5 centimetres；To cut polyvinyl chloride pipe is placed in refrigerator for use.
Using field trapping experiments, when being tested, using oriental fruit months property lure, (Beijing Chinese Academy of Sciences animal is given birth to
Produce) and synergistic formula combine, be placed in triangle trapper, apart from trapper lower section insect-sticking plate 2cm.Simultaneously using equipped with pears
The trapper (CK) of small lure compares.Trapper hangs over peach shady place apart from ground 1.5m at random, every two trapper it
Between spacing 20m.3 repetitions of each processing, 4 trappers of each reuse.Test period is 5.1-2017 in 2017
5.30, test site carries out in Jinzhong City Taigu County north Wang native place peach garden Shen Cun, replaces insect-sticking plate weekly, finally counts synergy and matches
It is 124 ± 10.5 that side was combined with gyplure, which lures worm amount, and the worm amount that lures of check plot is 63.5 ± 16.8.
Embodiment 2:
A kind of synergist of sex pheromone of Grapholitha molesta, β-ocimenum, (the E)-β-of the synergist by 1:0.1:0.05
Farnesene and 2,6 di tert butyl 4 methyl phenol composition；By β-ocimenum, (E)-β-farnesene and 2,6- di-t-butyl -4-
Three kinds of compounds of methylphenol are mixed according to above-mentioned mass ratio, with peristaltic pump by the solution pump of prepared three kinds of compounds
Addition internal diameter is 0.6mm, and outer diameter is in the polyvinyl chloride pipe of 0.8mm；Use jaw type sealing machine by the polyvinyl chloride of filling completion again
Pipe is sealed and is cut every 3-5 centimetres；To cut polyvinyl chloride pipe is placed in refrigerator for use.
Using field trapping experiments, when being tested, using oriental fruit months property lure, (Beijing Chinese Academy of Sciences animal is given birth to
Produce) and synergistic formula combine, be placed in triangle trapper, apart from trapper lower section insect-sticking plate 2cm.Trapper is apart from ground
1.5m hangs over peach shady place at random, spacing 20m between every two trapper.3 repetitions of each processing, it is each to reuse 4
A trapper.Test period is 7.1-2017 7.30 in 2017, and test site is in Jinzhong City Taigu County north Wang native place mind village peach
Garden carries out, and replaces insect-sticking plate weekly, and finally counting the worm amount that lures that synergistic formula is combined with gyplure is 95.8 ± 21.5, check plot
Lure worm amount be 53.6 ± 13.4.
Embodiment 3:
A kind of synergist of sex pheromone of Grapholitha molesta, β-ocimenum, (the E)-β-of the synergist by 1:0.5:0.05
Farnesene and 2,6 di tert butyl 4 methyl phenol composition；By β-ocimenum, (E)-β-farnesene and 2,6- di-t-butyl -4-
Three kinds of compounds of methylphenol are mixed according to above-mentioned mass ratio, with peristaltic pump by the solution pump of prepared three kinds of compounds
Addition internal diameter is 1mm, and outer diameter is in the polyethylene pipe of 1.2mm；Again with jaw type sealing machine by the polyethylene pipe of filling completion every
3-5 centimetres are sealed and are cut；To cut polyethylene pipe is placed in refrigerator for use.
Using field trapping experiments, when being tested, using oriental fruit months property lure, (Beijing Chinese Academy of Sciences animal is given birth to
Produce) and synergistic formula combine, be placed in triangle trapper, apart from trapper lower section insect-sticking plate 2cm.Trapper is apart from ground
1.5m hangs over peach shady place at random, spacing 20m between every two trapper.3 repetitions of each processing, it is each to reuse 4
A trapper.Test period 5.1-2017 5.30 in 2017, test site is in the Jinzhong City township Taigu County Bei Wang Western Hills bottom peach garden
It carries out, replaces insect-sticking plate weekly, finally counting the worm amount that lures that synergistic formula is combined with gyplure is 89.5 ± 17.8, check plot
Luring worm amount is 60.6 ± 8.2.
Embodiment 4:
A kind of synergist of sex pheromone of Grapholitha molesta, β-ocimenum of the synergist by 1:1:0.05, (E)-β-method
Alkene and 2,6 di tert butyl 4 methyl phenol composition；By β-ocimenum, (E)-β-farnesene and 2,6- di-t-butyl -4- first
Three kinds of compounds of base phenol are mixed according to above-mentioned mass ratio, are added the solution pump of prepared three kinds of compounds with peristaltic pump
Entering internal diameter is 0.8mm, and outer diameter is in the polyethylene pipe of 1.5mm；Again with jaw type sealing machine by the polyethylene pipe of filling completion every
3-5 centimetres are sealed and are cut；To cut polyethylene pipe is placed in refrigerator for use.
Using field trapping experiments, when being tested, using oriental fruit months property lure, (Beijing Chinese Academy of Sciences animal is given birth to
Produce) and synergistic formula combine, be placed in triangle trapper, apart from trapper lower section insect-sticking plate 2cm.Trapper is apart from ground
1.5m hangs over peach shady place at random, spacing 20m between every two trapper.3 repetitions of each processing, it is each to reuse 4
A trapper.Test period is 5.1-2017 5.30 in 2017, and test site is in Western Hills bottom village, the Jinzhong City township Taigu County Bei Wang
Peach garden carries out, and replaces insect-sticking plate weekly, and it is 86.5 ± 14.6 that finally statistics meter synergistic formula was combined with gyplure, which lures worm amount, right
The worm amount that lures according to area is 58.6 ± 8.8.
Claims (8)
1. a kind of sex pheromone of Grapholitha molesta synergist, which is characterized in that the synergist by 1:0.1-1:0.05 β-sweet basil
Alkene, (E)-β-farnesene and 2,6 di tert butyl 4 methyl phenol composition.
2. synergist as described in claim 1, which is characterized in that synergist by 1:0.1-0.5:0.05 β-ocimenum,
(E)-β-farnesene and 2,6 di tert butyl 4 methyl phenol composition.
3. synergist as claimed in claim 1 or 2, which is characterized in that the synergist by 1:0.2:0.05 β-ocimenum,
(E)-β-farnesene and 2,6 di tert butyl 4 methyl phenol composition.
4. synergist a method according to any one of claims 1-3, which is characterized in that the synergist the preparation method comprises the following steps: by β-sweet basil
Alkene, (E)-β-farnesene and 2, three kinds of compounds of 6- di-tert-butyl-4-methy phenol are mixed according to above-mentioned mass ratio, and use is compacted
The solution of prepared three kinds of compounds is added in polyvinyl chloride or polyethylene pipe dynamic pump；It again will be filled with jaw type sealing machine
At polyvinyl chloride or polyethylene pipe every 3-5 centimetres seal and cut；Polyvinyl chloride or polyethylene pipe placement will be cut to obtain
It is spare in refrigerator.
5. synergist as claimed in claim 4, which is characterized in that the specification of the polyvinyl chloride or polyethylene pipe is internal diameter
0.6-1 millimeters, 0.8-1.5 millimeters of outer diameter.
6. synergist as claimed in claim 5, which is characterized in that the specification of the polyvinyl chloride or polyethylene pipe is internal diameter
0.8 millimeter, 1 millimeter of outer diameter.
7. the synergist as described in one of claim 1-6, which is characterized in that the β-ocimenum, (E)-β-farnesene and 2,
The chemical purity of 6- di-tert-butyl-4-methy phenol answers >=90%.
8. the synergist as described in one of claim 1-7, which is characterized in that the β-ocimenum, (E)-β-farnesene and
The structural formula of the compound of 2,6 di tert butyl 4 methyl phenol are as follows:
β-ocimenum structural formula is as follows:
(E) structural formula of-β-farnesene is as follows:
The structural formula of 2,6 di tert butyl 4 methyl phenol is as follows:
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113332920A (en) * | 2021-04-25 | 2021-09-03 | 山西农业大学 | Automatic pesticide proportioning device and control method thereof |
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| CN102125033A (en) * | 2010-12-10 | 2011-07-20 | 中国农业科学院茶叶研究所 | Myllocerinus aurolineatus voss attractant and preparation method of lure of same |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113332920A (en) * | 2021-04-25 | 2021-09-03 | 山西农业大学 | Automatic pesticide proportioning device and control method thereof |
| CN113332920B (en) * | 2021-04-25 | 2023-04-07 | 山西农业大学 | Automatic pesticide proportioning device and control method thereof |
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