CN114642209A - Flonicamid-bifenthrin pesticide preparation as well as preparation method and application thereof - Google Patents

Flonicamid-bifenthrin pesticide preparation as well as preparation method and application thereof Download PDF

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CN114642209A
CN114642209A CN202110331333.2A CN202110331333A CN114642209A CN 114642209 A CN114642209 A CN 114642209A CN 202110331333 A CN202110331333 A CN 202110331333A CN 114642209 A CN114642209 A CN 114642209A
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flonicamid
bifenthrin
pesticide
preparation
carbon black
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孟凡睿
周鹏
梁海涛
张如刚
张铁军
孟泉州
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Shandong Tongfang Biotechnology Co ltd
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Shandong Tongfang Biotechnology Co ltd
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    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01NPRESERVATION 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
    • A01N43/00Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
    • A01N43/34Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom
    • A01N43/40Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom six-membered rings
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01NPRESERVATION 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
    • A01N53/00Biocides, pest repellants or attractants, or plant growth regulators containing cyclopropane carboxylic acids or derivatives thereof

Abstract

The invention belongs to the technical field of pesticides, and particularly relates to a flonicamid-bifenthrin pesticide preparation as well as a preparation method and application thereof. A pesticide preparation containing flonicamid and bifenthrin is prepared from flonicamid, bifenthrin, and white carbon black; the application of the flonicamid-bifenthrin pesticide preparation prepared by the invention improves the insecticidal effect and reduces the damage to soil and other beneficial insects; the flonicamid-bifenthrin pesticide preparation prepared by the invention can reduce the dosage of bifenthrin, improve the durability of pesticide effect and reduce the drug resistance.

Description

Flonicamid-bifenthrin pesticide preparation as well as preparation method and application thereof
Technical Field
The invention belongs to the technical field of pesticides, and particularly relates to a flonicamid-bifenthrin pesticide preparation as well as a preparation method and application thereof.
Background
Flonicamid, an organic compound, belongs to a novel low-toxicity pyridine amide insect growth regulator insecticide, is effective to various sucking mouthparts pests and has a good osmosis effect, and the insecticide is effective by preventing the sucking effect of the pests.
Bifenthrin is one of the rapidly developed novel pyrethroid agricultural insecticide products, is stable to light, is relatively stable in an acid medium, and has higher storage stability at normal temperature, but bifenthrin can cause certain damage to application personnel and the environment due to an organic solvent used in the preparation process in the use process.
Researchers at the present stage are faced with the problem of further reducing the use of raw medicines and ensuring high-efficiency prevention and treatment effects.
Disclosure of Invention
In order to solve the technical problems, the invention provides a flonicamid-bifenthrin pesticide preparation in a first aspect, and the preparation raw materials at least comprise flonicamid, bifenthrin and white carbon black; the weight ratio of flonicamid to bifenthrin is 2: (0.5-2).
As a preferable technical scheme, the particle size of the white carbon black is 10-100 nm.
As a preferable technical scheme, the preparation raw material also comprises magnesium aluminum silicate.
As a preferable technical scheme, the weight ratio of the white carbon black to the magnesium aluminum silicate is (1.2-2): 1.3.
as a preferable technical scheme, the weight ratio of the white carbon black to the magnesium aluminum silicate is 1.5: 1.3.
as a preferable technical scheme, the weight of the magnesium aluminum silicate is 10-15 wt% of that of the flonicamid.
As a preferable technical scheme, the formulation of the pesticide preparation comprises an aqueous emulsion, a suspending agent and missible oil.
As a preferable technical scheme, the preparation raw material also comprises at least one of wetting dispersant, defoaming agent and preservative.
The second aspect of the invention provides a preparation method of flonicamid-bifenthrin pesticide preparation, which comprises the following steps: mixing the raw materials, and preparing to obtain the final product with target concentration.
The third aspect of the invention provides application of a flonicamid-bifenthrin pesticide preparation for controlling tea lesser leafhoppers.
Has the advantages that: the flonicamid-bifenthrin pesticide preparation prepared by the invention has the following advantages:
1. the application of the flonicamid-bifenthrin pesticide preparation prepared by the invention improves the insecticidal effect and reduces the damage to soil and other beneficial insects;
2. the flonicamid-bifenthrin pesticide preparation prepared by the invention improves the action activity of the effective components, avoids sedimentation and layering and can reduce the dosage of the pesticide;
3. the flonicamid-bifenthrin pesticide preparation prepared by the invention can reduce the using amount of bifenthrin, improve the durability of pesticide effect and reduce the drug resistance;
4. the flonicamid-bifenthrin pesticide preparation prepared by the invention improves the stability of a system and ensures that the pesticide preparation can be used under the condition that the relative humidity is 82-89%.
Drawings
FIG. 1 is a table showing the results of performance tests of example 1 and a control group;
FIG. 2 is a chart of meteorological data during application.
Detailed Description
The disclosure may be understood more readily by reference to the following detailed description of preferred embodiments of the invention and the examples included therein. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In case of conflict, the present specification, including definitions, will control.
The term "prepared from …" as used herein is synonymous with "comprising". The terms "comprises," "comprising," "includes," "including," "has," "having," "contains," "containing," or any other variation thereof, as used herein, are intended to cover a non-exclusive inclusion. For example, a composition, process, method, article, or apparatus that comprises a list of elements is not necessarily limited to only those elements but may include other elements not expressly listed or inherent to such composition, process, method, article, or apparatus.
The conjunction "consisting of …" excludes any unspecified elements, steps or components. If used in a claim, the phrase is intended to claim as closed, meaning that it does not contain materials other than those described, except for the conventional impurities associated therewith. When the phrase "consisting of …" appears in a clause of the subject matter of the claims rather than immediately after the subject matter, it defines only the elements described in the clause; no other elements are excluded from the claims as a whole.
When an amount, concentration, or other value or parameter is expressed as a range, preferred range, or as a range of upper preferable values and lower preferable values, this is to be understood as specifically disclosing all ranges formed from any pair of any upper range limit or preferred value and any lower range limit or preferred value, regardless of whether ranges are separately disclosed. For example, when the range "1 to 5" is disclosed, the described range should be interpreted to include the ranges "1 to 4", "1 to 3", "1 to 2 and 4 to 5", "1 to 3 and 5", and the like. When a range of values is described herein, unless otherwise stated, the range is intended to include the endpoints thereof and all integers and fractions within the range.
The singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise. "optional" or "any" means that the subsequently described event or events may or may not occur, and that the description includes instances where the event occurs and instances where it does not.
Approximating language, as used herein throughout the specification and claims, is intended to modify a quantity, such that the invention is not limited to the specific quantity, but includes portions that are literally received for modification without substantial change in the basic function to which the invention is related. Accordingly, the use of "about" to modify a numerical value means that the invention is not limited to the precise value. In some instances, the approximating language may correspond to the precision of an instrument for measuring the value. In the present description and claims, range limitations may be combined and/or interchanged, including all sub-ranges contained therein if not otherwise stated.
In addition, the indefinite articles "a" and "an" preceding an element or component of the invention are not intended to limit the number requirement (i.e., the number of occurrences) of the element or component. Thus, "a" or "an" should be read to include one or at least one, and the singular form of an element or component also includes the plural unless the stated number clearly indicates that the singular form is intended.
In order to solve the problems, the invention provides a flonicamid-bifenthrin pesticide preparation in a first aspect, and the preparation raw materials at least comprise flonicamid, bifenthrin and white carbon black; the weight ratio of flonicamid to bifenthrin is 2: (0.5-2).
Flonicamid
Flonicamid with the structural formula:
Figure BDA0002994230690000031
it can permeate from root to stem and leaf, and the medicine is effective by preventing sucking action of pests.
Biphenthrin
Bifenthrin with the chemical formula of C23H22ClF3O2White solid, CAS: 82657-04-3, the structural formula is:
Figure BDA0002994230690000041
the product has the characteristics of strong knock-down effect, broad spectrum, high efficiency, quickness, long residual effect and the like, mainly has the effects of contact killing and stomach toxicity, and has no systemic effect.
In some preferred embodiments, the weight ratio of flonicamid to bifenthrin is 2: 1.
at present, the pesticide containing flonicamid and bifenthrin is used in the market, but the pesticide used for improving the pesticide effect has different limits on the dosage of flonicamid and bifenthrin, so that certain damage is caused to the pesticide effect, soil and other beneficial insects.
The applicant has made extensive and inventive experimental investigations, in the present application, to obtain the insecticidal composition of flonicamid and bifenthrin in a weight ratio of 2: (0.5-2), the prevention and treatment effect on tea lesser leafhoppers in tea trees is as high as more than 90%, and the damage capability to soil is greatly reduced, and the applicant speculates that the reason of the phenomenon is that: when the flonicamid acts with the tea lesser leafhopper, the flonicamid can be quickly absorbed by the tea lesser leafhopper to have a food refusal effect, and when the flonicamid paralyzes the tea lesser leafhopper, the bifenthrin can enter the insect body through the epidermis, feet and other parts of the tea lesser leafhopper again and enter the digestive system of the insect body to cause the medicament amount to be accumulated and inactivated. Meanwhile, the weight ratio of flonicamid to bifenthrin is 2: (0.5-2), the applicant finds that the preparation can overcome the defect of poor high-temperature use effect of bifenthrin and can ensure that the pesticide effect is exerted at the temperature of 20-29 ℃.
In some preferred embodiments, the pesticide preparation is in the form of emulsion in water, suspension, or emulsifiable concentrate.
In some preferred embodiments, the formulation of the pesticide formulation is selected from suspending agents.
In some preferred embodiments, the particle size of the white carbon black is 10-100 nm.
In some preferred embodiments, the particle size of the white carbon black is 10-50 nm.
In some preferred embodiments, the particle size of the white carbon black is 10-20 nm.
In the experimental process, the applicant finds that the stability of the system is greatly influenced when the white carbon black is added into the suspending agent system, but the applicant is researched by a large number of creative experiments, the particle size of the white carbon black also has an important influence on the action activity of the effective components, and the applicant speculates possible reasons: the specific surface energy of the white carbon black with the particle size of 10-20nm is higher, when the white carbon black exists in a system, a large number of water molecules and active groups in the system can be adsorbed, the effective components are rapidly assisted to be swelled and cracked, the dispersion of the effective components in the system is further promoted, the effective components can uniformly reach the surface of a plant along with a spray head when a medicine is sprayed, and the action activity of the effective components is further promoted.
However, the applicant finds that when the selected particle size is larger than 20nm, wetting dispersants, preservatives, water molecules and the like adsorbed on the surface of the white carbon black can be rapidly settled, so that the stability of a system is influenced, and when the particle size of the white carbon black is smaller than 10nm, the agglomeration force between the white carbon black and the aluminum metasilicate and the sodium polycarboxylate in the system is increased, the viscosity of the system is increased, so that the covering capacity of effective ingredients is enhanced, the content of the effective ingredients which play a role is reduced, the application dosage is increased, and the harm to the environment is enhanced.
In some preferred embodiments, the preparation feedstock further comprises magnesium aluminum silicate.
In some preferred embodiments, the weight ratio of the white carbon black to the magnesium aluminum silicate is (1.2-2): 1.3.
in some preferred embodiments, the weight ratio of the white carbon black to the magnesium aluminum silicate is 1.5: 1.3.
in the experimental process, the applicant finds that the added white carbon black can enhance the hydrophilic capability because of active hydroxyl contained on the surface of the white carbon black, and can absorb moisture in the environment under the condition of high relative humidity, so that the concentration of the suspending agent sprayed on the surface of tea leaves is diluted, and the drug effect is influenced. The applicant discovers through a large amount of creative experiments that the problem can be solved by compounding white carbon black and magnesium aluminum silicate, the drug effect of the compound is ensured under the condition that the relative humidity is 82-89%, and the excessive use of the drug is avoided.
In some preferred embodiments, the weight of the magnesium aluminum silicate is 10 to 15 wt% of the weight of flonicamid.
In the experimental process, the applicant finds that when the dosage of the magnesium aluminum silicate is controlled to be 10-15 wt% of the weight of the flonicamid, the spreadability of the active ingredients and the auxiliary agent in the system can be improved, and the applicant speculates that the phenomenon is caused: the aluminum magnesium silicate is added into the system, under the synergistic effect of the modified rosin polyether modifier and the sodium polycarboxylate, the aluminum magnesium silicate forms further dispersion in water, simultaneously absorbs water molecules, water and swelling in the system, forms a compact complex structure under the shearing force of the water molecules, reduces precipitation of powder and precipitation of water in the system, and when the weight of flonicamid is 10-15 wt%, flonicamid can be slowly released in the compact structure formed in the system, so that the durability of the pesticide effect is enhanced.
The applicant unexpectedly finds that the pesticide composition can show persistence in the control of the tea lesser leafhoppers, avoids the propagation and growth of multi-generation insects, and further reduces the drug resistance of the tea lesser leafhoppers to the suspending agent.
In some preferred embodiments, the pesticide preparation is in a dosage form of emulsion in water, suspension, and emulsifiable concentrate.
In some preferred embodiments, the preparation feedstock further comprises at least one of a wetting dispersant, a defoamer, a preservative.
In some preferred embodiments, the preparation raw materials further comprise wetting dispersants, antifoaming agents, preservatives, antifoaming agents, thickeners, antifreeze agents.
In some preferred embodiments, the wetting dispersant includes, but is not limited to, modified rosin polyether modifications and sodium polycarboxylates.
In some preferred embodiments, the wetting dispersant is selected from the group consisting of aromatic ring polyacrylate, alkyl aryl polyoxyethylene ether sulfate, and modified sodium alkyl benzene sulfonate.
In some preferred embodiments, the defoamer is selected from silicone defoamers.
In some preferred embodiments, the thickener is selected from xanthan gum.
In some preferred embodiments, the preservative is selected from sodium benzoate.
In some preferred embodiments, the antifreeze agent is selected from ethylene glycol.
In some preferred embodiments, the flonicamid-bifenthrin pesticide preparation comprises the following raw materials in percentage by weight: 5-15% of flonicamid, 1-10% of bifenthrin, 1-10% of wetting dispersant, 0.5-2% of white carbon black, 1-1.5% of aluminum magnesium silicate, 0.1-0.8% of defoaming agent, 0.1-0.5% of thickening agent, 0.1-0.5% of preservative, 1-5% of antifreezing agent and the balance of deionized water to 100%.
The second aspect of the invention provides a preparation method of flonicamid-bifenthrin pesticide preparation, which comprises the following steps: mixing flonicamid, bifenthrin, wetting dispersant, white carbon black, magnesium aluminum silicate, ethylene glycol, sodium benzoate, xanthan gum and polysiloxane defoamer to prepare the mixture with a target concentration.
The third aspect of the invention provides application of a flonicamid-bifenthrin pesticide preparation for controlling tea lesser leafhoppers.
The present invention will be specifically described below by way of examples. It is to be noted that the following examples are given solely for the purpose of illustration and are not to be construed as limitations on the scope of the invention, as many insubstantial modifications and variations of the invention described above will now occur to those skilled in the art.
In addition, the starting materials used are all commercially available, unless otherwise specified.
Examples
Example 1
The flonicamid-bifenthrin pesticide preparation comprises the following preparation raw materials in percentage by weight: 10% of flonicamid, 5% of bifenthrin, 5% of wetting dispersant, 1.5% of white carbon black, 1.3% of magnesium aluminum silicate, 0.4% of polysiloxane defoamer, 0.2% of xanthan gum, 0.3% of sodium benzoate, 4% of ethylene glycol and the balance of deionized water to 100%.
The wetting dispersant is selected from aromatic ring polyacrylate, alkyl aryl polyoxyethylene ether sulfate and modified sodium alkyl benzene sulfonate, and the aromatic ring polyacrylate is purchased from Shandongshen fine chemical industry Co., Ltd; alkyl aryl polyoxyethylene ether sulfate, available from Shandongshen Fine chemical Co., Ltd; modified sodium alkyl benzene sulfonate, available from Shandongshen Fine chemical Co., Ltd.
The white carbon black has the average particle size of 10-20nm and is purchased from homologous organic silicon materials GmbH in Foshan City.
A preparation method of flonicamid-bifenthrin pesticide preparation comprises the following steps:
mixing flonicamid, bifenthrin, white carbon black, magnesium aluminum silicate, ethylene glycol, sodium benzoate, xanthan gum and polysiloxane antifoaming agent to prepare the flonicamid-bifenthrin suspending agent with the mass concentration of 15 percent.
Example 2
The flonicamid-bifenthrin pesticide preparation comprises the following raw materials in percentage by weight: 12% of flonicamid, 3% of bifenthrin, 5% of wetting dispersant, 1.5% of white carbon black, 1.3% of magnesium aluminum silicate, 0.4% of polysiloxane defoamer, 0.2% of xanthan gum, 0.3% of sodium benzoate, 4% of ethylene glycol and the balance of deionized water to 100%.
The wetting dispersant is selected from aromatic ring polyacrylate, alkyl aryl polyoxyethylene ether sulfate and modified sodium alkyl benzene sulfonate, and the aromatic ring polyacrylate is purchased from Shandongshen fine chemical industry Co., Ltd; alkyl aryl polyoxyethylene ether sulfate, available from Shandongshen Fine chemical Co., Ltd; modified sodium alkyl benzene sulfonate, available from Shandongshen Fine chemical Co., Ltd.
The white carbon black has the average particle size of 10-20nm and is purchased from homologous organic silicon materials GmbH in Foshan City.
A method for preparing a flonicamid-bifenthrin pesticide formulation according to example 1.
Example 3
The flonicamid-bifenthrin pesticide preparation comprises the following preparation raw materials in percentage by weight: 7.5% of flonicamid, 7.5% of bifenthrin, 5% of wetting dispersant, 1.5% of white carbon black, 1.3% of magnesium aluminum silicate, 0.4% of polysiloxane defoamer, 0.2% of xanthan gum, 0.3% of sodium benzoate, 4% of ethylene glycol and the balance of deionized water to 100%.
The wetting dispersant is selected from aromatic ring polyacrylate, alkyl aryl polyoxyethylene ether sulfate and modified sodium alkyl benzene sulfonate, and the aromatic ring polyacrylate is purchased from Shandongshen fine chemical industry Co., Ltd; alkyl aryl polyoxyethylene ether sulfate, available from Shandongshen Fine chemical Co., Ltd; modified sodium alkyl benzene sulfonate, available from Shandongshen Fine chemical Co., Ltd.
The white carbon black has the average particle size of 10-20nm and is purchased from homologous organic silicon materials GmbH in Foshan City.
A method for preparing a flonicamid-bifenthrin pesticide formulation according to example 1.
Example 4
The specific implementation mode of the flonicamid-bifenthrin pesticide preparation is the same as that of example 1, and the difference of the preparation from example 1 is that the white carbon black accounts for 2% by weight.
Example 5
The specific implementation mode of the flonicamid-bifenthrin pesticide preparation is the same as that of example 1, and the difference of the preparation from example 1 is that the white carbon black accounts for 5% by weight.
Example 6
The specific implementation mode of the pesticide preparation of flonicamid-bifenthrin is the same as that of example 1, and the difference of the pesticide preparation from example 1 is that the average grain diameter of white carbon black is 5nm and the white carbon black is purchased from Japan Deshan company.
Example 7
The specific implementation mode of the pesticide preparation of flonicamid-bifenthrin is the same as that of example 1, and the difference of the pesticide preparation from example 1 is that the average grain diameter of white carbon black is 50nm and the white carbon black is purchased from Japan Deshan company.
And (3) performance testing:
the flonicamid-bifenthrin suspension prepared in example 1 of the present application at a mass concentration of 15% was used in field tests, and the results of the tests were counted in the following table.
And (3) test crops: tea trees;
the control object is: tea lesser leafhopper;
soil conditions: the soil quality of the test field is yellow soil, the pH value is 5.7, and the fertility is moderate and upward;
cell area: 20cm2
Application pattern and number of repetitions: spraying the test medicament with water, repeating for 4 times, and specifically referring to fig. 1;
temperature and humidity during application: the temperature is 17-29 ℃; relative humidity 82.4-88.5%, refer specifically to fig. 2;
reference is made to GB/T17980.56-2004 for the investigation method, time and times;
and (3) experimental design:
Figure BDA0002994230690000091
the average of four experiments is reported in the table below.
The drug effect calculation method comprises the following steps:
percent population reduction [% ] (pre-dose basis-number of living insects after drug)/pre-dose basis [% 100 [% ]
The control effect is (the reduction rate of the population of the insects in the treatment area-the reduction rate of the population of the insects in the control area)/(100-the reduction rate of the population of the insects in the control area) × 100
Figure BDA0002994230690000092
Figure BDA0002994230690000101
The 15% flonicamid-bifenthrin suspending agent provided by the application example 1 has the effective component dosage of 33.75g, 67.5g and 101.25g per hectare for controlling tea plant leafhoppers, and the control effects of the suspending agent 1 day after application are 71.31%, 80.4% and 82.35% respectively; the control effect 3 days after the drug is 76.71 percent, 86.38 percent and 88.98 percent respectively; the control effects 7 days after the pesticide is applied are respectively 78.61%, 88.73% and 91.81%; the control effect is 81.46%, 90.01% and 93.79% respectively 14 days after the drug is applied. The control medicament, namely 20 percent flonicamid-bifenthrin suspending agent provided by Jiangxi Hao Kuaisi biotechnology limited, has the effective component dosage of 69g per hectare for preventing tea tree tea leafhopper, and the preventing and treating effects of the suspending agent in 1 day, 3 days, 7 days and 14 days after the suspending agent is 81.41 percent, 88.12 percent, 90.77 percent and 92.33 percent respectively; 25g/L bifenthrin emulsifiable concentrate provided by Shandongzhiling pesticide Limited company is used for preventing and controlling tea tree tea leafhoppers with the use amount of 37.5g per hectare, and the prevention and control effects in 1 day, 3 days, 7 days and 14 days after the pesticide application are 76.73%, 87.68%, 87.96% and 87.06% respectively; the 20% flonicamid suspension provided by Jiangsuchun group GmbH has an effective component dosage of 90g per hectare for preventing tea tree tea leafhopper, and the preventing effects of the suspension in 1 day, 3 days, 7 days and 14 days are respectively 79.60%, 85.38%, 88.61% and 90.11%.
Statistical analysis shows that:
1 day after the pesticide is applied, the control effects of 67.5g of 15% flonicamid-bifenthrin suspending agent per hectare of active ingredient, 69g of contrast agent 20% flonicamid-bifenthrin suspending agent per hectare of active ingredient, 37.5g of 25g/L bifenthrin emulsifiable concentrate per hectare of active ingredient and 90g of 20% flonicamid-flonicamid suspending agent per hectare of active ingredient on tea plant leafhoppers have no significant difference: the control effect of the 15% flonicamid-bifenthrin suspending agent on the tea tree leafhoppers has no obvious difference between 101.25g of active ingredient dosage per hectare, the contrast agent is 20% flonicamid-bifenthrin suspending agent, 69g of active ingredient dosage per hectare and the 20% flonicamid-bifenthrin suspending agent is 90g of active ingredient dosage per hectare; the control effect of the 15% flonicamid-bifenthrin suspending agent with the use amount of 101.25g of active ingredients per hectare on the tea tree tea leafhoppers is obviously better than the control effect of the 15% flonicamid-bifenthrin suspending agent with the use amount of 33.75g of active ingredients per hectare and the control agent with the use amount of 25g/L bifenthrin missible oil with the use amount of 37.5g of active ingredients per hectare on the tea tree tea leafhoppers; the control effect of the 15 percent flonicamid-bifenthrin suspending agent on tea leafhoppers per hectare with the use amount of 33.75g of effective components is obviously lower than that of the other treatments.
After 3 days, the control effect of the 15 percent flonicamid-bifenthrin suspending agent on the tea plant leafhoppers has no obvious difference between 101.25g of effective component dosage per hectare and 69g of effective component dosage per hectare of the contrast agent 20 percent flonicamid-bifenthrin suspending agent and 37.5g of effective component dosage per hectare of 25g/L bifenthrin emulsifiable concentrate; the control effect of 15% flonicamid-bifenthrin suspension on tea tree tea leafhoppers is not obviously different from the control effect of three control medicaments on tea tree tea leafhoppers by 67.5g of active ingredient per hectare, and the control effect of the control medicament on the tea tree tea leafhoppers by 5% flonicamid-bifenthrin suspension is obviously better than the control effect of 33.75g and 67.5g on the tea tree tea leafhoppers by 90g of active ingredient per hectare of 20% flonicamid-bifenthrin suspension: the control effect of the 15 percent flonicamid-bifenthrin suspending agent on tea leafhoppers per hectare with the use amount of 33.75g of effective components is obviously lower than that of the other treatments.
After 7 days, the control effect of the 15 percent flonicamid-bifenthrin suspending agent with the effective component dosage of 101.25g per hectare and the control agent with the effective component dosage of 20 percent flonicamid-bifenthrin suspending agent with the effective component dosage of 69g per hectare on the tea tree tea leafhoppers is not obviously different, but the control effect of the 15 percent flonicamid-bifenthrin suspending agent with the effective component dosage of 33 per hectare and the control agent with the effective component dosage of 75g and the control agent with the effective component dosage of 25g/L bifenthrin missible oil per hectare 37.5g on the tea tree tea leafhoppers is obviously better; 67.5g of active ingredient dosage of the 15 percent flonicamid-bifenthrin suspending agent per hectare and no obvious difference between the control effects of the three control agents on tea tree leafhoppers; the control effect of the 15% flonicamid-bifenthrin suspending agent with the dosage of 101.25g of active ingredients per hectare on the tea tree tea leafhoppers is obviously better than the control effect of the control agent with the dosages of 33.75g and 67.5g of active ingredients per hectare, the control agent with the dosages of 25g/L bifenthrin emulsifiable concentrate with the dosages of 37.5g per hectare, and the control effect of the 20% flonicamid-bifenthrin suspending agent with the dosages of 90g per hectare on the tea tree tea leafhoppers; the control effect of the 15 percent flonicamid-bifenthrin suspending agent on tea leafhoppers per hectare with the use amount of 33.75g of effective components is obviously lower than that of the other treatments.
14 days after the pesticide is applied, the control effect of the 15% flonicamid-bifenthrin suspending agent on the tea plant green leafhoppers is not obviously different from the control effect of the control agent 20% flonicamid-bifenthrin suspending agent on the tea plant green leafhoppers by using 101.25g of active ingredients per hectare and 69g of active ingredients per hectare, but the control effect is obviously better than the control effect of the 15% flonicamid-bifenthrin suspending agent on the tea plant green leafhoppers by using 33.75g and 67.5g of active ingredients per hectare, the control agent 25g/L bifenthrin emulsifiable concentrate on the tea plant green leafhoppers by using 37.5g of active ingredients per hectare and 90g of active ingredients per hectare; 67.5g of active ingredient dosage of 15% flonicamid-bifenthrin suspension per hectare and 90g of active ingredient dosage of contrast agent 20% flonicamid-bifenthrin suspension per hectare have no obvious difference on the control effect of tea plant tea lesser leafhoppers, but the control effect of the active ingredient dosage of 15% flonicamid-bifenthrin suspension per hectare and 37.5g of active ingredient dosage of contrast agent 25g/L bifenthrin missible oil per hectare on the tea plant tea lesser leafhopper is obviously better than the control effect of the active ingredient dosage of 15% flonicamid-bifenthrin suspension per hectare; the control effect of the 15 percent flonicamid-bifenthrin suspending agent on tea plant lesser leafhoppers by 33.75g of active ingredients per hectare is obviously lower than that of other treatments.
2. Flonicamid-bifenthrin prepared in examples 1 to 7 was used in the stability test at a mass concentration of 15% under the test conditions of 28 ℃ and a relative humidity of 65%, and after 24 months, the stability change was observed, and the results were counted in the following table.
Experiment of Stability of
Example 1 Without any change
Example 2 Without any change
Example 3 Without any change
Example 4 Without any change
Example 5 Precipitation occurs
Example 6 Obvious demixing and precipitation appear
Example 7 Obvious demixing and precipitation appear
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. A flonicamid-bifenthrin pesticide preparation is characterized in that the preparation raw materials at least comprise flonicamid, bifenthrin and white carbon black; the weight ratio of flonicamid to bifenthrin is 2: (0.5-2).
2. The flonicamid-bifenthrin pesticide preparation as claimed in claim 1, wherein the particle size of the white carbon black is 10-100 nm.
3. The flonicamid-bifenthrin pesticide formulation as set forth in claim 1, wherein the raw materials further comprise magnesium aluminum silicate.
4. The flonicamid-bifenthrin pesticide preparation as claimed in claim 3, wherein the weight ratio of the white carbon black to the magnesium aluminum silicate is (1.2-2): 1.3.
5. the flonicamid-bifenthrin pesticide preparation as claimed in claim 4, wherein the weight ratio of the white carbon black to the magnesium aluminum silicate is 1.5: 1.3.
6. the flonicamid-bifenthrin pesticide preparation as claimed in claim 3, wherein the weight of the magnesium aluminum silicate is 10-15 wt% of the flonicamid.
7. The flonicamid-bifenthrin pesticide preparation as claimed in claim 1, wherein the pesticide preparation is in the form of emulsion in water, suspension, or emulsifiable concentrate.
8. The flonicamid-bifenthrin pesticide formulation as claimed in claim 1, wherein the preparation raw materials further comprise at least one of a wetting dispersant, an antifoaming agent, and a preservative.
9. A method for preparing a flonicamid-bifenthrin pesticide formulation as claimed in any one of claims 1 to 8, comprising the steps of: mixing the raw materials, and preparing to obtain the final product with target concentration.
10. Use of a flonicamid-bifenthrin pesticide formulation as defined in any one of claims 1 to 8 for the control of tea leafhoppers.
CN202110331333.2A 2021-03-26 2021-03-26 Flonicamid-bifenthrin pesticide preparation as well as preparation method and application thereof Pending CN114642209A (en)

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