CN111213648A - Pesticide composition containing diatomite with specific structure, preparation method and application thereof - Google Patents
Pesticide composition containing diatomite with specific structure, preparation method and application thereof Download PDFInfo
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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
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/08—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing solids as carriers or diluents
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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
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/90—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having two or more relevant hetero rings, condensed among themselves or with a common carbocyclic ring system
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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
- A01N55/00—Biocides, pest repellants or attractants, or plant growth regulators, containing organic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen and sulfur
- A01N55/02—Biocides, pest repellants or attractants, or plant growth regulators, containing organic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen and sulfur containing metal atoms
- A01N55/04—Tin
Abstract
The invention provides a pesticide composition containing diatomite with a specific structure, which comprises a raw pesticide and the diatomite with the specific structure, wherein the raw pesticide is azocyclotin or epoxy worm, and the diatomite with the specific structure is saw-toothed honeycomb diatomite. The dosage form is selected from one of emulsifiable concentrate, suspending agent, wettable powder, soluble powder, granules, aqueous emulsion, oil suspension and water dispersible granules; the coating also comprises an auxiliary agent, wherein the auxiliary agent comprises at least one of water, a dispersing agent, a wetting agent, a synergist, an antifreezing agent, a preservative, a thickening agent, an emulsifier, a solvent, a defoaming agent, an adhesive, a disintegrating agent and a carrier.
Description
Technical Field
The invention relates to the technical field related to pesticides, and particularly provides a pesticide composition containing diatomite with a specific structure, a preparation method and application thereof.
Background
In the crop planting process, the pesticide is sprayed to effectively control plant diseases and insect pests, so that the crop yield can be greatly improved. Then, the application of a large amount of pesticide brings a heavy burden to the environment, and particularly, some toxic and harmful elements and compounds are difficult to degrade and transform in a short time after entering the soil, thereby causing a considerable burden to the ecological environment. In recent years, with the continuous advancement of the environment protection concept in the whole society, the use of chemical pesticides should be reduced as much as possible while the harm of diseases and pests is effectively controlled for the purposes of effectively preventing and treating diseases, promoting the yield increase of grains, increasing the income of farmers and protecting the ecological safety of the environment.
In the using process of pesticide, the diatomite is often used as a binder or a filler, and is used for preparing powder or wettable powder with higher concentration by utilizing higher porosity and stronger adsorption performance, but the pesticide effect is improved due to higher adsorption effect, meanwhile, higher degree of chemical component pollution is brought to crops, the problem of uneven dispersion is caused in the using process due to higher specific surface area, and the natural diatomite with the conventional crystal structure is mainly adsorbed on the body surface of insects to achieve the purpose of killing insects, so that a good synergistic effect cannot be formed between the natural diatomite and other functional components, and the practical application of the diatomite is limited.
Disclosure of Invention
In order to solve the technical problems, the first aspect of the invention provides a pesticide composition containing diatomite with a specific structure, which comprises a raw pesticide and diatomite with a specific structure, wherein the raw pesticide is azocyclotin or epoxy worm, and the diatomite with the specific structure is saw-toothed honeycomb diatomite.
In a preferable technical scheme of the invention, the weight ratio of the diatomite to the original medicine is (1: 60) - (100: 1); preferably, the weight ratio of the diatomite to the original medicine is (1: 40) - (50: 1); or preferably, the weight ratio of the diatomite to the original medicine is (1: 20) - (50: 1); or preferably, the weight ratio of the diatomite to the original medicine is 1: 1.
as a preferred technical scheme, the dosage form of the invention is selected from one of emulsifiable concentrate, suspending agent, wettable powder, soluble powder, granules, emulsion in water, oil suspension and water dispersible granules.
As a preferable technical scheme, the composite material further comprises an auxiliary agent, wherein the auxiliary agent comprises at least one of water, a dispersing agent, a wetting agent, a synergist, an antifreezing agent, a preservative, a thickening agent, an emulsifier, a solvent, an antifoaming agent, an adhesive, a disintegrating agent and a carrier.
As a preferred technical scheme of the invention, the content of the auxiliary agent is 5-20 wt% of the total content of the original medicine and the diatomite with a specific structure; preferably, the content of the auxiliary agent is 8-17 wt% of the total content of the original drug and the diatomite with a specific structure; further preferably, the content of the auxiliary agent is 11-14 wt% of the total content of the original drug and the diatomite with a specific structure.
In a preferred embodiment of the present invention, the dispersant is selected from any one or a combination of a plurality of alkyl phenol polyether, a salt of naphthalene sulfonic acid formaldehyde condensate, polyoxyethylene polyoxypropylene ether block copolymer, and polycarboxylate; preferably, the dispersant is a polyoxyethylene polyoxypropylene ether block copolymer; further preferably, the HLB of the alkylphenol polyether is 15 to 30.
As a preferred technical scheme of the invention, the wetting agent is selected from any one or a combination of a plurality of alkyl sodium sulfate, alkyl sodium sulfonate, alkyl naphthalene sodium sulfonate, sodium alkyl benzene sulfonate and fatty alcohol-polyoxyethylene ether sodium sulfate; preferably sodium alkyl sulfonate; further preferred is sodium dodecyl diphenyl oxide disulfonate.
As a preferred technical scheme of the invention, the auxiliary agent comprises a dispersing agent, a wetting agent and a filler; preferably, the weight ratio of the dispersing agent, the wetting agent and the filler is 1: (1-2): (0.3-0.6).
The second aspect of the invention provides a preparation method of the pesticide composition containing the diatomite with the specific structure, which comprises the steps of adding an auxiliary agent into a container according to a specific weight ratio, adding a raw pesticide, mixing and stirring, adding the diatomite with the specific structure, mixing and stirring to obtain the pesticide composition.
The third aspect of the invention provides application of the pesticide composition containing the diatomite with the specific structure in prevention and killing of grape aphids, green plant bugs, tea geometrid, tea thrips, tea lesser leafhopper, prodenia litura, leaf miners, whiteflies, frankliniella occidentalis, scale insects and citrus red spiders.
Drawings
FIG. 1: optical microscope image of diatomaceous earth of specific structure having a saw-tooth honeycomb structure in example 1 of the present invention.
FIG. 2 is an electron microscope image of diatomaceous earth having a specific structure of a saw-toothed honeycomb structure in example 1 of the present invention.
Detailed Description
The technical features of the technical solutions provided by the present invention will be further clearly and completely described below with reference to the specific embodiments, and it should be apparent that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including 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. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
The words "preferred", "preferably", "more preferred", and the like, in the present invention, refer to embodiments of the invention that may provide certain benefits, under certain circumstances. However, other embodiments may be preferred, under the same or other circumstances. Furthermore, the recitation of one or more preferred embodiments does not imply that other embodiments are not useful, nor is it intended to exclude other embodiments from the scope of the invention.
The invention provides a pesticide composition containing diatomite with a specific structure, which comprises a raw pesticide and the diatomite with the specific structure, wherein the raw pesticide is azocyclotin or cycloxaprid, and the diatomite with the specific structure is saw-toothed honeycomb diatomite.
In the present invention, the term "composition" means that the components of the composition are packaged in combination or separately and used together when used. That is, in the present invention, the "technical material and diatomaceous earth having a specific structure" means: the technical material and the diatomite with a specific structure can be mixed and packaged together, and can be used together when in use; further comprising: the original medicine and the diatomite with a specific structure are separately packaged and mixed together according to a proportion when in use.
In some embodiments, the weight ratio of diatomaceous earth to the bulk drug is (1: 60) - (100: 1); preferably, the weight ratio of the diatomite to the original medicine is (1: 40) - (50: 1); or preferably, the weight ratio of the diatomite to the original medicine is (1: 20) - (50: 1); or preferably, the weight ratio of the diatomite to the original medicine is 1: 1.
tin triazoles
Azocyclotin is also known as 1- (tricyclohexylstannyl) -1-hydro-1, 2, 4-triazocene, is colorless powder, belongs to a contact acaricide, is a broad-spectrum acaricide with strong contact action, can kill nymph mites, adult mites and summer eggs, is ineffective to winter eggs, has better stability to light and rainwater and has longer residual period; its toxicological mechanism may be related to inhibition of oxidative phosphorylation process of nerve cells; the azocyclotin compound is suitable for preventing and treating panonychus ulmi, tetranychus crataegi, panonychus citri, rust mites of citrus, tetranychus urticae, tetranychus cinnabarinus, leaf mites of truncations and the like on crops such as apples, oranges, grapes and vegetables, and the like, and needs to be contacted with pests in the action process and act on nerve cells in the pests, but the acaricidal effect of the azocyclotin is reduced under the action of dorsal hair or ventral hair of the surface of the mites in the practical application process.
Cycloxaprid
Cycloxaprid is a cis-nitenpyram oxygen-bridge heterocyclic neonicotinoid insecticide, has very excellent insecticidal activity on most pests of homoptera, particularly rice planthopper, aphid and whitefly, and is also effective on pests of lepidoptera, coleopteran and diptera; it can also be used in agriculture and horticulture such as rice, vegetable, fruit tree, wheat, cotton and corn, and can be used for stem and leaf treatment and seed treatment.
Diatomite
Diatomite is a siliceous sedimentary rock of biological origin, which is a fossil formed by depositing a lot of unicellular organisms containing silicon, namely diatom and a small amount of remains such as adenophora and spongosia on the bottom of sea or a freshwater lake, which live in water about twenty million years ago, and is obtained by digging, crushing and grinding into white or grey-white fine powder with rather high hardness; the composition contains a small amount of Al2O3、Fe2O3、CaO、MgO、K2O、Na2O、P2O5And organic matter; the diatomite is white, grey, light brown and the like, and has the properties of fineness, looseness, light weight, porosity, water absorption and strong permeability.
The diatomite is diatomite with a specific structure, and preferably, the diatomite with the specific structure is diatomite with specific saw-tooth-shaped honeycomb structure silica.
In some embodiments, the diatomaceous earth of the particular structure of the present invention is available from yirui rock, france, Celite 610.
In the experimental process, the applicant unexpectedly discovers that when the Celite610 is used in combination with azocyclotin or cycloxaprid, particularly when the weight ratio of the diatomite to a raw pesticide is (1: 60) - (100: 1), the compound composition has good control and insecticidal effects, and in addition, the applicant also observes and researches the microstructure of the Celite610 by using an optical microscope (shown in figure 1) and an electron microscope (shown in figure 2), and discovers that the Celite610 has a clear honeycomb zigzag structure, and the structure improves the specific surface area of the diatomite, improves the roughness and sharpness of the surface of the diatomite, improves the adsorption of the diatomite to the raw pesticide components and the adsorption force of the compound composition on a treated object, thereby improving the action effect of the pesticide composition; in addition, the method is also beneficial to the rupture of a wax layer or a lipid layer on the body surface of the pests, so that the respiratory, digestive, reproductive, movement and other systems of the pests are disturbed, the body fluid of the pests is reduced sharply, and the death of the pests is promoted; on the other hand, when the azocyclotin or the cycloxaprid is compounded and used with the honeycomb-shaped sawtooth-shaped diatomite, the azocyclotin or the cycloxaprid is more favorable for contacting with a treated object and permeating into the body, and the azocyclotin or the cycloxaprid and the honeycomb-shaped sawtooth-shaped diatomite have synergistic effect, so that the pest control and killing effects of the pesticide composition are improved.
The formulation of the pesticide composition containing diatomite with a specific structure is not particularly limited in the invention, and various formulations known to those skilled in the art can be prepared by methods known to those skilled in the art and used.
In some embodiments, the formulation of the pesticide composition containing diatomite with a specific structure is selected from one of emulsifiable solution, suspending agent, wettable powder, soluble powder, granules, aqueous emulsion, oil suspension and water dispersible granules.
In some embodiments, the pesticide composition containing the diatomite with the specific structure further comprises an auxiliary agent, wherein the auxiliary agent comprises at least one of water, a dispersing agent, a wetting agent, a synergist, an antifreezing agent, a preservative, a thickening agent, an emulsifier, a solvent, an antifoaming agent, a binder, a disintegrating agent and a filler.
In some embodiments, the content of the auxiliary agent is 5-20 wt% of the total content of the original drug and the diatomite with a specific structure; preferably, the content of the auxiliary agent is 8-17 wt% of the total content of the original drug and the diatomite with a specific structure; further preferably, the content of the auxiliary agent is 11-14 wt% of the total content of the original drug and the diatomite with a specific structure; more preferably, the content of the auxiliary agent is 12 wt% of the total content of the original drug and the diatomite with a specific structure.
In some embodiments, the dispersant is selected from any one or combination of an alkylphenol polyether, a salt of a naphthalene sulfonic acid formaldehyde condensate, a polyoxyethylene polyoxypropylene ether block copolymer, a polycarboxylate; preferably, the dispersant is a polyoxyethylene polyoxypropylene ether block copolymer; more preferably, the polyoxyethylene polyoxypropylene ether block copolymer has an HLB of 15 to 30, and the polyoxyethylene polyoxypropylene ether block copolymer may be manufactured by southern Tong Runhu chemical Co., Ltd., F38.
In some embodiments, the wetting agent is selected from the group consisting of sodium alkyl sulfate, sodium alkyl sulfonate, sodium alkyl naphthalene sulfonate, sodium alkyl benzene sulfonate, sodium fatty alcohol polyoxyethylene ether sulfate, any one or more of in combination; preferably sodium alkyl sulfonate; further preferred is sodium dodecyl diphenyl oxide disulfonate, which may be Dow, FAX 2A 1.
The disintegrant according to the present invention is not particularly limited, and may be one known to those skilled in the art, such as but not limited to: carbonates and solid acids; as the carbonate, there are carbonates or bicarbonates of alkali metals, alkaline earth metals, ammonium and the like, and specific examples thereof are: sodium carbonate, potassium carbonate, calcium carbonate, lithium carbonate, ammonium carbonate, calcium carbonate, magnesium carbonate, sodium hydrogen carbonate, potassium hydrogen carbonate, ammonium hydrogen carbonate, sodium sesquicarbonate, potassium sesquicarbonate, ammonium sesquicarbonate, and the like; examples of the solid acid include citric acid, succinic acid, maleic acid, lactic acid, fumaric acid, tartaric acid, oxalic acid, malonic acid, malic acid, adipic acid, p-toluenesulfonic acid, sulfamic acid, boric acid, sodium dihydrogen phosphate, potassium dihydrogen phosphate, and the like; the carbonate and the solid acid may be used in a mixture of 1 or 2 or more kinds, and the ratio of the carbonate and the solid acid may be appropriately selected.
The binder of the present invention is not particularly limited, and may be a disintegrant known to those skilled in the art, such as, but not limited to: starch, diatomaceous earth, cyclodextrin, polyvinyl alcohol, rosin, carboxymethyl cellulose, carboxyethyl cellulose, carboxymethyl cellulose salt; preferably starch or carboxymethyl cellulose salt.
The filler of the present invention is not particularly limited, and may be a disintegrant known to those skilled in the art, such as, but not limited to: kaolin, talcum powder, light calcium carbonate, bentonite, white carbon black and attapulgite.
In some embodiments, the pesticide composition containing the diatomite with the specific structure is a wettable powder, and the wettable powder of the pesticide composition containing the diatomite with the specific structure is used by adding water, and the water adding amount can be automatically regulated and controlled according to needs.
In some embodiments, the wettable powder (wetteapowder, abbreviated as WP) is a pesticide preparation which is prepared by mixing diatomite with a specific structure, a technical material and an auxiliary agent to reach a certain fineness and is diluted with water for use, wherein the technical material is azocycloxaprid or cycloxaprid. The wettable powder does not contain organic solvent, has good environmental compatibility and is convenient to store and transport; the production cost is low, the production technology and the production equipment are mature in a matching way, but certain dust pollution exists in the processing of the wettable powder, the particle size is relatively large, and the effect is relatively reduced; the formula auxiliary dosage is relatively less, and the performances of wetting, spreading and the like of crops and targets after dilution are relatively poor.
In some embodiments, the pesticide composition containing the diatomite with the specific structure is water dispersible granules, and the water dispersible granules of the pesticide composition containing the diatomite with the specific structure are used by adding water, and the water adding amount can be automatically regulated and controlled according to needs.
In some embodiments, the water dispersible granule (WG) is composed of diatomaceous earth with a specific structure, a technical material and an auxiliary agent, wherein the technical material is azocyclotin. When in use, the water dispersible granule is put into water and can be disintegrated and dispersed quickly to form a solid-liquid dispersion system. The water dispersible granule has no dust pollution when in use; the content of the active ingredients is generally between 50 percent and 90 percent, and more than 70 percent, and the packaging, storage and transportation are convenient and safe; the preparation has high storage stability; the fluidity is good, the metering is convenient, and the packaged material is easy to process; however, in the actual use, it is considered that the effect of adsorption on the surface of the object to be treated when the water system containing the water dispersible granules is sprayed.
In the experimental process, when sodium alkylsulfonate and polyoxyethylene polyoxypropylene ether block copolymer are used as an auxiliary agent to be used together with a raw pesticide and diatomite containing a specific structure, the suspension rate of the prepared wettable powder is high, when the auxiliary agent is not used, the suspension rate of a water system of the pesticide composition is low, which may be that the polarity of the raw pesticide component is greatly different from that of water, the wetting effect in water is poor, and particles are easy to agglomerate, and on the other hand, the diatomite with the honeycomb sawtooth structure is inlaid, and the particles are agglomerated by physical combination with van der waals force or hydrogen bond action, so that the suspension rate of the system is low macroscopically, and after the auxiliary agent is added, the polyoxyethylene polyoxypropylene ether block copolymer with HLB of 15-30 and the sodium alkylsulfonate have a bridging effect together, so that the wettability of the raw pesticide and the diatomite containing the specific structure in water is improved, the dispersion of the diatomite is improved, meanwhile, the polyoxyethylene polyoxypropylene ether block copolymer and the sodium alkyl sulfonate have synergistic effect, a film structure can be formed on the surface of the diatomite containing a specific structure, the agglomeration among the serrated diatomite is reduced, the dispersion effect of the diatomite in water is improved, meanwhile, the polyoxyethylene polyoxypropylene ether block copolymer and an oleophylic chain segment of the sodium alkyl sulfonate coat the original medicine, and the hydrophilic group is contacted with water molecules, so that the dispersion and the water-wetting property of the original medicine are improved.
In addition, the wettable powder is used in a spraying mode after being mixed with water in the actual use process, and when the dispersing capacity and the wetting capacity of the original pesticide and the diatomite containing a specific structure in a water system are improved, the surface tension of the water system of the pesticide composition is reduced under the synergistic action of the auxiliary agent, so that the surface spreadability and the permeability of the pesticide composition on the surface of a treated object are improved fully when the wettable powder is used in the spraying mode, and the pest control and killing effects of the pesticide composition are improved.
In some preferred embodiments, the adjuvants include dispersants, wetting agents, and fillers; further preferably, the weight ratio of the dispersing agent, the wetting agent and the filler is 1: (1-2): (0.3 to 0.6); more preferably, it is further preferred that the weight ratio of the dispersing agent, wetting agent and filler is 1: 1.5: 0.45.
the second aspect of the invention provides a preparation method of the pesticide composition containing the diatomite with the specific structure, which comprises the following steps: adding the auxiliary agent into a container according to a specific weight ratio, adding the raw medicine, mixing and stirring, adding the diatomite with the specific structure, and mixing and stirring to obtain the diatomite.
The diatomite contained in the pesticide composition provided by the invention has a honeycomb sawtooth structure, and the structure has a large influence on the action effect of the pesticide composition in the using process, so that a mechanical crushing mode is not used for avoiding damaging the microstructure of the diatomite with a specific structure in the preparation process.
Preferably, the preparation method of the pesticide composition containing the diatomite with the specific structure comprises the following steps: adding the auxiliary agent into a container according to a specific weight ratio, adding the raw medicine, mixing and stirring uniformly, and performing high universal grinding and reducing the fineness; and adding the diatomite with the specific structure, shaking by using a self-sealing bag without mechanical crushing in order to avoid damaging the structure of the diatomite with the specific structure, transferring into a flask after 10min, stirring and mixing for 30min by using a stirrer, and fully and uniformly mixing to obtain the diatomite.
The third aspect of the invention provides application of the pesticide composition containing the diatomite with the specific structure in prevention and killing of grape aphids, green plant bugs, tea geometrid, tea thrips, tea lesser leafhopper, prodenia litura, leaf miners, whiteflies, frankliniella occidentalis, scale insects and citrus red spiders.
The present invention will be specifically described below by way of examples. It should be noted that the following examples are only for illustrating the present invention and should not be construed as limiting the scope of the present invention, and that the insubstantial modifications and adaptations of the present invention by those skilled in the art based on the above disclosure are still within the scope of the present invention.
Example 1: combined toxicity determination of kieselguhr and azocyclotin containing specific structures on citrus red spiders
Medicament: 95% azacyclotin bulk drug (from Zhejiang gaku technologies Ltd.) with Celite610 diatomaceous earth;
referring to the method in NY/T1154.13-2008 standard, a leaf spray method was used. Cleaning and wiping the smooth citrus leaves with the same size, sticking the citrus leaves onto wet sponge with the leaf surfaces facing upwards, enclosing the leaves with wet small cotton slivers to prevent test mites from escaping, putting the wet sponge into a culture dish with the diameter of 9cm, adding water into the culture dish, and slightly lowering the water level to be lower than the height of the sponge. Inoculating indoor cultured nymphs to leaves, each leaf having no less than 30 heads. Placing the culture dish on a bottom plate of a Potter spraying tower for spraying, wherein the spraying amount is 1mL, taking out the culture dish after the liquid medicine is settled for 1min, and transferring the culture dish to a breeding condition for breeding. Each treatment was repeated 4 times and a blank control was run.
After 72h, the death of the test insects was examined under a dissecting mirror and recorded. The judgment standard of the death of the test insects is as follows: death was counted as no response when the test insects were gently touched by tweezers.
The co-toxicity coefficient (CTC) of each mixed combination is determined by a Sun & Johnson (1960) co-toxicity coefficient method (CTC) according to a raw test standard method NY/T1154.7-2006. Generally, a co-toxicity coefficient greater than 120 indicates a synergistic effect, less than 80 indicates an antagonistic effect, and between 80 and 120 indicates an additive effect. The co-toxicity coefficient is calculated as follows
The Theoretical Toxicity Index (TTI) of the mixture is the toxicity index of the agent A x the percent (%) of the agent A + the toxicity index of the agent B x the percent (%) of the agent B
TABLE 1 toxicity test results of Paeonia lactiflora and azocyclotin containing specific structures on citrus red spider
Example 2: combined toxicity determination of citrus red spider by using diatomite containing specific structure and cycloxaprid
Medicament: 97% cycloxaprid technical (available from Shanghai agricultural and Biochemical products Co., Ltd.) and Celite610 diatomaceous earth;
referring to the method in NY/T1154.13-2008 standard, a leaf spray method was used. Cleaning and wiping the smooth citrus leaves with the same size, sticking the citrus leaves onto wet sponge with the leaf surfaces facing upwards, enclosing the leaves with wet small cotton slivers to prevent test mites from escaping, putting the wet sponge into a culture dish with the diameter of 9cm, adding water into the culture dish, and slightly lowering the water level to be lower than the height of the sponge. Inoculating indoor cultured nymphs to leaves, each leaf having no less than 30 heads. Placing the culture dish on a bottom plate of a Potter spraying tower for spraying, wherein the spraying amount is 1mL, taking out the culture dish after the liquid medicine is settled for 1min, and transferring the culture dish to a breeding condition for breeding. Each treatment was repeated 4 times and a blank control was run.
After 72h, the death of the test insects was examined under a dissecting mirror and recorded. The judgment standard of the death of the test insects is as follows: death was counted as no response when the test insects were gently touched by tweezers.
The co-toxicity coefficient (CTC) of each mixed combination is determined by a Sun & Johnson (1960) co-toxicity coefficient method (CTC) according to a raw test standard method NY/T1154.7-2006. Generally, a co-toxicity coefficient greater than 120 indicates a synergistic effect, less than 80 indicates an antagonistic effect, and between 80 and 120 indicates an additive effect. The co-toxicity coefficient is calculated as follows
The Theoretical Toxicity Index (TTI) of the mixture is the toxicity index of the agent A x the percent (%) of the agent A + the toxicity index of the agent B x the percent (%) of the agent B
TABLE 2 toxicity test results of blend of diatomaceous earth with specific structure and cycloxaprid against citrus red spider
Example 3: combined toxicity determination method for citrus scale insects by using diatomite containing specific structure and cycloxaprid
Medicament: 97% cycloxaprid technical (available from Shanghai agricultural and Biochemical products Co., Ltd.) and Celite610 diatomaceous earth;
the method in NY/T1154.6-2006 is referred to, and the insect-soaking method is adopted. Dipping the trimmed citrus leaves with citrus arrowhead scales in a test solution for 10 seconds, taking out the citrus leaves, absorbing redundant liquid medicine around the leaves and the insects by using filter paper, putting the citrus leaves and the insects into a culture dish (with the diameter of 90mm) filled with moisturizing filter paper, wrapping petioles by using wet cotton balls for moisturizing, repeating the steps for 4 times per concentration, covering the dish cover after the treatment is finished, and placing the dish cover in an observation room for culturing.
After 72h, examining the death condition of the test insects by using a dissecting mirror, and recording, wherein the death judgment standard of the test insects is fresh and alive, and the test insects are regarded as live insects in yellow or light yellow; the dead insects are considered to be dead insects if the body of the insects is shriveled and the color is dark.
The co-toxicity coefficient (CTC) of each mixed combination is determined by a Sun & Johnson (1960) co-toxicity coefficient method (CTC) according to a raw test standard method NY/T1154.7-2006. Generally, a co-toxicity coefficient greater than 120 indicates a synergistic effect, less than 80 indicates an antagonistic effect, and between 80 and 120 indicates an additive effect. The co-toxicity coefficient is calculated as follows
The Theoretical Toxicity Index (TTI) of the mixture is the toxicity index of the agent A x the percent (%) of the agent A + the toxicity index of the agent B x the percent (%) of the agent B
TABLE 3 toxicity test results of the mixture of diatomaceous earth with specific structure and cycloxaprid against Setaria citrella (Cekurus)
Example 4: combined toxicity determination method for Frankliniella occidentalis by using diatomite containing specific structure and cycloxaprid
Medicament: 97% cycloxaprid technical (available from Shanghai agricultural and Biochemical products Co., Ltd.) and Celite610 diatomaceous earth;
according to the standard method NY/T1154.14-2008 of biological measurement, a leaf-soaking dish method is adopted. Beating the blades into leaf disks by a puncher with the diameter of 18mm, soaking the leaf disks in a test reagent solution for 10 seconds, putting the leaf disks into a culture dish (with the diameter of 90mm) padded with moisturizing filter paper, putting 5 leaf disks into each dish, naturally drying, then selecting the western flower thrips into the culture dish, sealing the mouth of the dish by a preservative film, pricking some small holes on the film by a needle for ventilation, repeating the treatment for 4 times, finishing the treatment, and placing the dish in an observation room for culture.
And (4) after 72h, checking and recording the death condition of the test insects, wherein the death judgment standard of the test insects is that the test insects are dead as the result of no response when the pointed writing brush is lightly contacted with the test insects.
The co-toxicity coefficient (CTC) of each mixed combination is determined by a Sun & Johnson (1960) co-toxicity coefficient method (CTC) according to a raw test standard method NY/T1154.7-2006. Generally, a co-toxicity coefficient greater than 120 indicates a synergistic effect, less than 80 indicates an antagonistic effect, and between 80 and 120 indicates an additive effect. The co-toxicity coefficient is calculated as follows
The Theoretical Toxicity Index (TTI) of the mixture is the toxicity index of the agent A x the percent (%) of the agent A + the toxicity index of the agent B x the percent (%) of the agent B
TABLE 4 toxicity test results of the mixture of diatomaceous earth containing specific structure and cycloxaprid on Frankliniella occidentalis
Example 5: combined toxicity determination method for trialeurodes vaporariorum by using diatomite containing specific structure and cycloxaprid
Medicament: 97% cycloxaprid technical (available from Shanghai agricultural and Biochemical products Co., Ltd.) and Celite610 diatomaceous earth;
referring to the method in NY/T1154.14-2008 standard, the leaf soaking method is adopted. After dissolving agar (1%) by heating, 20mL to 200mL of the solution was taken out of a beaker and condensed at room temperature for use. Soaking the leaves in a test solution for 10 seconds, taking out, naturally drying, sticking the leaves on the surface of the solidified agar solution, wrapping petioles with wet cotton balls, putting 3-4 leaves in each beaker, inoculating adult trialeurodes vaporariorum, covering 15 heads of each beaker with a preservative film, pricking small holes on the film with needles for ventilation, repeating the treatment for 4 times, and placing the beaker in an observation room for cultivation after the treatment.
And (4) after 72h, detecting the death condition of the test insects, and recording, wherein the death judgment standard of the test insects is that no response is calculated when the tweezers lightly contact the test insects.
The co-toxicity coefficient (CTC) of each mixed combination is determined by a Sun & Johnson (1960) co-toxicity coefficient method (CTC) according to a raw test standard method NY/T1154.7-2006. Generally, a co-toxicity coefficient greater than 120 indicates a synergistic effect, less than 80 indicates an antagonistic effect, and between 80 and 120 indicates an additive effect. The co-toxicity coefficient is calculated as follows
The Theoretical Toxicity Index (TTI) of the mixture is the toxicity index of the agent A x the percent (%) of the agent A + the toxicity index of the agent B x the percent (%) of the agent B
TABLE 5 toxicity test results of blending diatomaceous earth and cycloxaprid containing specific structures to trialeurodes vaporariorum
Example 6: combined toxicity determination method of kieselguhr and cycloxaprid containing specific structures on liriomyza sativae
Medicament: 97% cycloxaprid technical (available from Shanghai agricultural and Biochemical products Co., Ltd.) and Celite610 diatomaceous earth;
referring to the method in NY/T1154.13-2008 standard, spraying method is adopted. Transplanting potted cowpea pest-free seedlings into pest-raising cages, inoculating a certain amount of mated adult liriomyza huidonii, taking out bean seedlings with liriomyza huidonii eggs after 6h, placing the bean seedlings in another pest-raising cage, continuously raising the bean seedlings to 2-year larvae (ensuring that each disc contains no less than 80 larvae of 2-year larvae), then carrying out spraying treatment, naturally air drying, and transferring the bean seedlings to an artificial climate box for continuous raising. Each treatment was repeated 4 times and a blank control was run.
And (3) cutting bean seedlings from roots at the later stage of 3-year-old larvae, moisturizing the tail ends by using soaked cotton balls, putting the bean seedlings into plastic basins in an artificial climate box, pupating the bean seedlings, and counting the quantity of pupae in each dish.
The co-toxicity coefficient (CTC) of each mixed combination is determined by a Sun & Johnson (1960) co-toxicity coefficient method (CTC) according to a raw test standard method NY/T1154.7-2006. Generally, a co-toxicity coefficient greater than 120 indicates a synergistic effect, less than 80 indicates an antagonistic effect, and between 80 and 120 indicates an additive effect. The co-toxicity coefficient is calculated as follows
The Theoretical Toxicity Index (TTI) of the mixture is the toxicity index of the agent A x the percent (%) of the agent A + the toxicity index of the agent B x the percent (%) of the agent B
TABLE 6 toxicity test results of Paeocharis maculata containing specific structure diatomite and cycloxaprid
Example 7: joint toxicity determination method for prodenia litura by using diatomite containing specific structure and cycloxaprid
Medicament: 97% cycloxaprid technical (available from Shanghai agricultural and Biochemical products Co., Ltd.) and Celite610 diatomaceous earth;
referring to the method in NY/T1154.14-2008 standard, the leaf-dipping dish method is adopted. Beat the cabbage leaf into the leaf dish with the hole puncher of diameter 18mm, dip the leaf dish in the liquid of testing medicine for 10 seconds after, put into the culture dish (diameter 90mm) that has filled with the filter paper that moisturizes, 6 leaf dishes are put into to every dish, wait to dry the back naturally, select again and starve 4h twill noctuid 3 age larva to the culture dish in, every dish is not less than 10, 4 times are repeated, the processing finishes, covers the ware lid, arranges the indoor culture of observation in.
And (4) after 72h, detecting the death condition of the test insects, and recording, wherein the death judgment standard of the test insects is that no response is calculated when the tweezers lightly contact the test insects.
The co-toxicity coefficient (CTC) of each mixed combination is determined by a Sun & Johnson (1960) co-toxicity coefficient method (CTC) according to a raw test standard method NY/T1154.7-2006. Generally, a co-toxicity coefficient greater than 120 indicates a synergistic effect, less than 80 indicates an antagonistic effect, and between 80 and 120 indicates an additive effect. The co-toxicity coefficient is calculated as follows
The Theoretical Toxicity Index (TTI) of the mixture is the toxicity index of the agent A x the percent (%) of the agent A + the toxicity index of the agent B x the percent (%) of the agent B
TABLE 7 toxicity test results of Twill prepared by mixing diatomite containing specific structure with cycloxaprid
Example 8: combined toxicity of diatomite containing specific structure and cycloxaprid on tea leafhoppers
Medicament: 97% cycloxaprid technical (available from Shanghai agricultural and Biochemical products Co., Ltd.) and Celite610 diatomaceous earth;
referring to the method in NY/T1154.11-2008 standard, the dipping method is adopted. Selecting 3 fresh tea tree sprouts, soaking in a test liquid for 30 seconds, taking out, naturally drying, wrapping the base parts of the sprouts with wet absorbent cotton, moisturizing, sealing absorbent cotton balls with a preservative film, and placing in a glass test tube (F200' 30mm) with the concentration repeated for 4 times. Then, 3-year-old nymphs of tea lesser leafhoppers subjected to ether mild anesthesia treatment are inoculated into a brush pen, 15 +/-2 heads of each tube are used, and the mouth of each tube is sealed by white gauze. After the treatment, the sample is placed in an observation chamber.
And (4) after 72h, detecting the death condition of the test insects, and recording, wherein the death judgment standard of the test insects is that no response is calculated when the tweezers lightly contact the test insects.
The co-toxicity coefficient (CTC) of each mixed combination is determined by a Sun & Johnson (1960) co-toxicity coefficient method (CTC) according to a raw test standard method NY/T1154.7-2006. Generally, a co-toxicity coefficient greater than 120 indicates a synergistic effect, less than 80 indicates an antagonistic effect, and between 80 and 120 indicates an additive effect. The co-toxicity coefficient is calculated as follows
The Theoretical Toxicity Index (TTI) of the mixture is the toxicity index of the agent A x the percent (%) of the agent A + the toxicity index of the agent B x the percent (%) of the agent B
TABLE 8 toxicity test results of tea leafhopper by blending diatomite containing specific structure and cycloxaprid
Example 9: combined toxicity determination method of tea leaf tea thrips by using diatomite containing specific structure and cycloxaprid
Medicament: 97% cycloxaprid technical (available from Shanghai agricultural and Biochemical products Co., Ltd.) and Celite610 diatomaceous earth;
according to the standard method NY/T1154.14-2008 of biological measurement, a leaf dipping method is adopted. Selecting fresh 3 tea tree sprout shoots with a certain amount of tea thrips (not less than 20), soaking in the test liquid for 10 seconds, taking out, naturally drying, wrapping the base of the sprout shoots with wet absorbent cotton to preserve moisture, sealing the absorbent cotton balls with a preservative film, and placing in a glass test tube (F200' 30mm) with 4 times of repetition per concentration. The mouth of the test tube is sealed by a preservative film, and the small holes are punched for ventilation. After the treatment, the sample is placed in an observation chamber.
And after 72h, examining the death condition of the test insects under a dissecting mirror, and recording, wherein the death judgment standard of the test insects is that the test insects die because the test insects are not reacted when the pointed writing brush is lightly contacted with the test insects.
The co-toxicity coefficient (CTC) of each mixed combination is determined by a Sun & Johnson (1960) co-toxicity coefficient method (CTC) according to a raw test standard method NY/T1154.7-2006. Generally, a co-toxicity coefficient greater than 120 indicates a synergistic effect, less than 80 indicates an antagonistic effect, and between 80 and 120 indicates an additive effect. The co-toxicity coefficient is calculated as follows
The Theoretical Toxicity Index (TTI) of the mixture is the toxicity index of the agent A x the percent (%) of the agent A + the toxicity index of the agent B x the percent (%) of the agent B
TABLE 9 toxicity test results of tea leaf tea yellow thrips containing specific structure diatomite and cycloxaprid
Example 10: combined toxicity determination method of kieselguhr and cycloxaprid containing specific structures on tea geometrid
Medicament: 97% cycloxaprid technical (available from Shanghai agricultural and Biochemical products Co., Ltd.) and Celite610 diatomaceous earth;
referring to the method in NY/T1154.14-2008 standard, the leaf soaking method is adopted. Selecting 3 fresh tea tree sprouts, soaking in the test liquid medicine for 30 seconds, taking out, naturally drying, wrapping the bases of the sprouts with wet absorbent cotton to preserve moisture, sealing absorbent cotton balls with a preservative film, and placing in a can bottle, wherein the concentration is repeated for 4 times. Then inoculating 2-year-old nymphs of tea geometrid with consistent size and liveness and health into a brush pen, wherein 15 +/-2 heads of each pot are sealed by white gauze. After the treatment, the sample is placed in an observation chamber.
And (4) after 72h, detecting the death condition of the test insects, and recording, wherein the death judgment standard of the test insects is that no response is calculated when the tweezers lightly contact the test insects.
The co-toxicity coefficient (CTC) of each mixed combination is determined by a Sun & Johnson (1960) co-toxicity coefficient method (CTC) according to a raw test standard method NY/T1154.7-2006. Generally, a co-toxicity coefficient greater than 120 indicates a synergistic effect, less than 80 indicates an antagonistic effect, and between 80 and 120 indicates an additive effect. The co-toxicity coefficient is calculated as follows
The Theoretical Toxicity Index (TTI) of the mixture is the toxicity index of the agent A x the percent (%) of the agent A + the toxicity index of the agent B x the percent (%) of the agent B
TABLE 10 toxicity test results of tea geometrid by mixing diatomite and cycloxaprid with specific structures
Example 11: joint toxicity determination method for apolygus lucorum by using diatomite containing specific structure and cycloxaprid
Medicament: 25% cycloxaprid (available from Shanghai agricultural biochemicals GmbH) with Celite610 diatomaceous earth;
referring to the method in NY/T1154.11-2008 standard, a leaf spray method was used. The method comprises the steps of disinfecting, cleaning and airing fresh kidney beans by adopting an immersion method, cutting the kidney beans into 2-3 cm segments, immersing the kidney beans in liquid medicines with different concentrations for 30 seconds, airing the kidney beans under natural conditions, and then putting the kidney beans into transparent plastic boxes (6 cm in diameter and 7cm in height) with smooth air, wherein each box has two sections. Healthy and consistent 3-year-old nymphs of lygus lucorum were inoculated, 15 or so per box, repeated 4 times, and a blank control was set. And putting the plastic box into a light incubator for culturing.
And after 48h, the death condition of the test insects in each box is checked, the bodies of the lygus lucorum are lightly touched by the brush tips, and the death judgment standard of the test insects is that no response is calculated when the tweezers lightly touch the test insects.
The co-toxicity coefficient (CTC) of each mixed combination is determined by a Sun & Johnson (1960) co-toxicity coefficient method (CTC) according to a raw test standard method NY/T1154.7-2006. Generally, a co-toxicity coefficient greater than 120 indicates a synergistic effect, less than 80 indicates an antagonistic effect, and between 80 and 120 indicates an additive effect. The co-toxicity coefficient is calculated as follows
The Theoretical Toxicity Index (TTI) of the mixture is the toxicity index of the agent A x the percent (%) of the agent A + the toxicity index of the agent B x the percent (%) of the agent B
TABLE 11 toxicity test results of compounding diatomaceous earth with specific structure and cycloxaprid against lygus lucorum
Example 12: joint toxicity determination method of kieselguhr and cycloxaprid containing specific structures on grape aphids
Medicament: 25% cycloxaprid (available from Shanghai agricultural biochemicals GmbH) with Celite610 diatomaceous earth;
the method in NY/T1154.6-2006 is referred to, and the insect-soaking method is adopted. Cutting leaves with a certain amount of grape aphids, soaking in the liquid medicine to be tested for 10 seconds, taking out, absorbing the liquid medicine around the insect body with absorbent filter paper, placing in a culture dish padded with moisturizing filter paper, moisturizing with a wet cotton ball, and covering the culture dish with wet gauze. Each 30 aphids were treated, 4 replicates and a blank treatment without drug (including solvent and emulsifier used) was used. After the treatment, the cells were transferred to an observation room for cultivation.
And (3) detecting the death condition of the test insects after 48h, and recording, wherein the judgment standard of the death of the test insects is as follows: the aphids were lightly touched with a writing brush, and the body was judged dead.
The co-toxicity coefficient (CTC) of each mixed combination is determined by a Sun & Johnson (1960) co-toxicity coefficient method (CTC) according to a raw test standard method NY/T1154.7-2006. Generally, a co-toxicity coefficient greater than 120 indicates a synergistic effect, less than 80 indicates an antagonistic effect, and between 80 and 120 indicates an additive effect. The co-toxicity coefficient is calculated as follows
The Theoretical Toxicity Index (TTI) of the mixture is the toxicity index of the agent A x the percent (%) of the agent A + the toxicity index of the agent B x the percent (%) of the agent B
TABLE 12 toxicity test results of mixtures of diatomaceous earth containing specific structures and cycloxaprid against grape aphids
Example 13
Embodiment 13 of the present invention provides a pesticidal composition containing diatomaceous earth of a specific structure, which is a wettable powder, comprising diatomaceous earth of a honeycomb-shaped saw-tooth structure, a technical compound and an auxiliary agent;
the weight ratio of the diatomite to the original medicine is 100: 1; diatomaceous earth was purchased from yirui stone, france, Celite 610;
the content of the auxiliary agent is 12 wt% of the total content of the original medicine and the diatomite with a specific structure;
the auxiliary agent comprises a dispersing agent, a wetting agent and a filler, wherein the weight ratio of the dispersing agent to the wetting agent to the filler is 1: 1.5: 0.45 of;
the dispersing agent is polyoxyethylene polyoxypropylene ether block copolymer, which is Nantong Chen Run chemical industry Co., Ltd, F38;
the wetting agent is sodium dodecyl diphenyl ether disulfonate, Dow, FAX 2A 1;
the filler is white carbon black;
the preparation method of the pesticide composition containing the diatomite with the specific structure comprises the following steps: adding the auxiliary agent into a container according to a specific weight ratio, adding the raw medicine, mixing and stirring uniformly, and performing high universal grinding and reducing the fineness; and adding the diatomite with the specific structure, shaking by using a self-sealing bag without mechanical crushing in order to avoid damaging the structure of the diatomite with the specific structure, transferring into a flask after 10min, stirring and mixing for 30min by using a stirrer, and fully and uniformly mixing to obtain the diatomite. After the mixing treatment, the shape of the diatomite is observed by an optical microscope, and the structure is still a honeycomb zigzag structure and is not damaged.
Example 14
Embodiment 14 of the present invention provides a pesticide composition containing diatomaceous earth with a specific structure, which is a wettable powder, comprising diatomaceous earth with a honeycomb-shaped sawtooth-shaped structure, a technical compound and an auxiliary agent;
the weight ratio of the diatomite to the original medicine is 100: 1; diatomaceous earth was purchased from yirui stone, france, Celite 610;
the content of the auxiliary agent is 12 wt% of the total content of the original medicine and the diatomite with a specific structure;
the auxiliary agent comprises a dispersing agent and a filler, wherein the weight ratio of the dispersing agent to the filler is 1: 0.45 of;
the dispersing agent is polyoxyethylene polyoxypropylene ether block copolymer, which is Nantong Chen Run chemical industry Co., Ltd, F38;
the filler is white carbon black;
the preparation method of the pesticide composition containing the diatomite with the specific structure comprises the following steps: adding the auxiliary agent into a container according to a specific weight ratio, adding the raw medicine, mixing and stirring uniformly, and performing high universal grinding and reducing the fineness; and adding the diatomite with the specific structure, shaking by using a self-sealing bag without mechanical crushing in order to avoid damaging the structure of the diatomite with the specific structure, transferring into a flask after 10min, stirring and mixing for 30min by using a stirrer, and fully and uniformly mixing to obtain the diatomite.
Example 15
Embodiment 15 of the present invention provides a pesticidal composition containing diatomaceous earth of a specific structure, which is a wettable powder, comprising diatomaceous earth of a honeycomb-shaped saw-tooth structure, a technical compound and an auxiliary agent;
the weight ratio of the diatomite to the original medicine is 100: 1; diatomaceous earth was purchased from yirui stone, france, Celite 610;
the content of the auxiliary agent is 12 wt% of the total content of the original medicine and the diatomite with a specific structure;
the auxiliary agent comprises a wetting agent and a filler, wherein the weight ratio of the wetting agent to the filler is 1: 0.3;
the wetting agent is sodium dodecyl diphenyl ether disulfonate, Dow, FAX 2A 1;
the filler is white carbon black;
the preparation method of the pesticide composition containing the diatomite with the specific structure comprises the following steps: adding the auxiliary agent into a container according to a specific weight ratio, adding the raw medicine, mixing and stirring uniformly, and performing high universal grinding and reducing the fineness; and adding the diatomite with the specific structure, shaking by using a self-sealing bag without mechanical crushing in order to avoid damaging the structure of the diatomite with the specific structure, transferring into a flask after 10min, stirring and mixing for 30min by using a stirrer, and fully and uniformly mixing to obtain the diatomite.
Example 16
Embodiment 16 of the present invention provides a pesticide composition containing diatomaceous earth with a specific structure, which is wettable powder, comprising diatomaceous earth with a honeycomb-shaped sawtooth-shaped structure, a technical material and an auxiliary agent;
the weight ratio of the diatomite to the original medicine is 100: 1; diatomaceous earth was purchased from yirui stone, france, Celite 610;
the content of the auxiliary agent is 12 wt% of the total content of the original medicine and the diatomite with a specific structure;
the auxiliary agent comprises a dispersing agent, a wetting agent and a filler, wherein the weight ratio of the dispersing agent to the wetting agent to the filler is 1: 1.5: 0.45 of;
the dispersant is lignosulfonate, available from tamariskoid, canada, N20;
the wetting agent is sodium dodecyl diphenyl ether disulfonate, Dow, FAX 2A 1;
the filler is white carbon black;
the preparation method of the pesticide composition containing the diatomite with the specific structure comprises the following steps: adding the auxiliary agent into a container according to a specific weight ratio, adding the raw medicine, mixing and stirring uniformly, and performing high universal grinding and reducing the fineness; and adding the diatomite with the specific structure, shaking by using a self-sealing bag without mechanical crushing in order to avoid damaging the structure of the diatomite with the specific structure, transferring into a flask after 10min, stirring and mixing for 30min by using a stirrer, and fully and uniformly mixing to obtain the diatomite.
Performance evaluation
1. Measurement of suspension percentage: measured according to the method of GB/T14825-2006
The method comprises the following steps: the sample to be tested is prepared into a suspension of appropriate concentration with standard hard water. Standing in a measuring cylinder for a certain time under the specified conditions, measuring the mass fraction of the effective components in the suspension liquid at one tenth of the bottom, and calculating the suspension rate, wherein the test results are shown in a table 13;
2. determination of surface tension
The method comprises the following steps: the prepared wettable powder was prepared into 500-fold diluted solution, and its surface tension was measured with a surface tension meter, and the test results are shown in table 13.
TABLE 13 results of Performance testing
| Suspension Rate (%) | Surface tension (mN/m) | |
| Example 13 | 85.6 | 25.80±0.03 |
| Example 14 | 69.1 | 35.73±0.03 |
| Example 15 | 70.6 | 36.26±0.03 |
| Example 16 | 75.8 | 31.23±0.02 |
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in other forms, and any person skilled in the art may modify or change the technical content disclosed above into an equivalent embodiment with equivalent changes, but all those simple modifications, equivalent changes and modifications made on the above embodiment according to the technical spirit of the present invention still belong to the protection scope of the present invention.
Claims (10)
1. The pesticide composition containing the diatomite with the specific structure is characterized by comprising a raw pesticide and the diatomite with the specific structure, wherein the raw pesticide is azocyclotin or epoxy worm, and the diatomite with the specific structure is saw-toothed honeycomb diatomite.
2. The pesticide composition containing diatomite with a specific structure as claimed in claim 1, wherein the weight ratio of the diatomite to the original pesticide is (1: 60) - (100: 1); preferably, the weight ratio of the diatomite to the original medicine is (1: 40) - (50: 1); or preferably, the weight ratio of the diatomite to the original medicine is (1: 20) - (50: 1); or preferably, the weight ratio of the diatomite to the original medicine is 1: 1.
3. the diatomaceous earth-containing agricultural chemical composition according to claim 1 or 2, wherein the formulation is selected from the group consisting of emulsifiable concentrates, suspending agents, wettable powders, soluble powders, granules, aqueous emulsions, oil suspensions, and water dispersible granules.
4. The pesticide composition containing diatomite with a specific structure as claimed in claim 3, characterized by further comprising an auxiliary agent, wherein the auxiliary agent comprises at least one of water, a dispersing agent, a wetting agent, a synergist, an antifreeze, a preservative, a thickener, an emulsifier, a solvent, an antifoaming agent, a binder, a disintegrant and a carrier.
5. The pesticide composition containing the diatomite with the specific structure as claimed in claim 4, wherein the content of the auxiliary agent is 5-20 wt% of the total content of the original drug and the diatomite with the specific structure; preferably, the content of the auxiliary agent is 8-17 wt% of the total content of the original drug and the diatomite with a specific structure; further preferably, the content of the auxiliary agent is 11-14 wt% of the total content of the original drug and the diatomite with a specific structure.
6. The diatomite-containing pesticide composition as set forth in claim 4, wherein the dispersing agent is selected from the group consisting of alkylphenol polyethers, salts of naphthalene sulfonic acid formaldehyde condensates, polyoxyethylene polyoxypropylene ether block copolymers, and polycarboxylates; preferably, the dispersant is an alkylphenol polyether; further preferably, the HLB of the alkylphenol polyether is 10 to 11.
7. The pesticide composition containing diatomite with a specific structure as claimed in claim 4, wherein the wetting agent is selected from any one or more of alkyl sodium sulfate, alkyl sodium sulfonate, alkyl naphthalene sodium sulfonate, sodium alkyl benzene sulfonate and fatty alcohol-polyoxyethylene ether sodium sulfate; preferably sodium alkyl sulfonate; further preferred is sodium dodecyl diphenyl oxide disulfonate.
8. The pesticide composition containing the diatomite with the specific structure as set forth in claim 4, characterized in that the auxiliary agent comprises a dispersing agent, a wetting agent and a filler; preferably, the weight ratio of the dispersing agent, the wetting agent and the filler is 1:
(1～2)：(0.3～0.6)。
9. a preparation method of the pesticide composition containing the diatomite with the specific structure according to any one of claims 4 to 8 is characterized in that the pesticide composition is obtained by adding the auxiliary agent into a container according to a specific weight ratio, adding the technical product, mixing and stirring the technical product, adding the diatomite with the specific structure, mixing and stirring the technical product and the diatomite with the specific structure.
10. The use of the diatomaceous earth of any one of claims 1 to 8 for controlling and killing aphids of grape, lygus lucorum, tea geometrid, tea thrips, tea lesser leafhopper, prodenia litura, liriomyza, whitefly, thrips cichorii, scale insects, and citrus red spiders.
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