CN111937898A - Pesticide composition containing imidacloprid and fluopicolide and preparation method thereof - Google Patents
Pesticide composition containing imidacloprid and fluopicolide and preparation method thereof Download PDFInfo
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- CN111937898A CN111937898A CN202010856472.2A CN202010856472A CN111937898A CN 111937898 A CN111937898 A CN 111937898A CN 202010856472 A CN202010856472 A CN 202010856472A CN 111937898 A CN111937898 A CN 111937898A
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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
- A01N51/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds having the sequences of atoms O—N—S, X—O—S, N—N—S, O—N—N or O-halogen, regardless of the number of bonds each atom has and with no atom of these sequences forming part of a heterocyclic ring
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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
- A01N25/32—Ingredients for reducing the noxious effect of the active substances to organisms other than pests, e.g. toxicity reducing compositions, self-destructing compositions
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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
- A01N43/34—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom
- A01N43/40—Biocides, 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
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/60—Biocides or preservatives, e.g. disinfectants, pesticides or herbicides; Pest repellants or attractants
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- Life Sciences & Earth Sciences (AREA)
- Pest Control & Pesticides (AREA)
- General Health & Medical Sciences (AREA)
- Plant Pathology (AREA)
- Health & Medical Sciences (AREA)
- Dentistry (AREA)
- Engineering & Computer Science (AREA)
- Agronomy & Crop Science (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Toxicology (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention discloses a pesticide composition containing imidacloprid and fluopicolide and a preparation method thereof, wherein the pesticide composition comprises the following raw materials in parts by weight: imidacloprid: 6-8 parts of fluopicolide: 6-8 parts of polyacrylate dispersant, 2-4 parts of modified alkyl sulfate wetting agent, 4-6 parts of nano titanium dioxide, 10-13 parts of binder, 4-6 parts of disintegrant and 23-27 parts of corn starch, and the preparation steps are as follows: s1: the raw materials are taken according to the parts by weight and are sequentially put into a mixer to be fully and uniformly mixed for 30-40min, so that mixed powder is obtained; s2: crushing the uniformly mixed powder into proper fineness distribution by a jet mill; s3: uniformly adding water into the crushed materials in a kneading machine for mixing, and putting the kneaded wet materials into a granulator for extrusion granulation; s4: the extruded wet granules are transferred to a fluidized bed and dried under the action of a gas stream at a suitable temperature. The invention can comprehensively prevent and treat common diseases and insect pests of the pakchoi, and has the effects of synergistic prevention and treatment, application reduction and efficiency improvement and pesticide residue reduction.
Description
Technical Field
The invention relates to the technical field of pesticide compositions, in particular to a pesticide composition containing imidacloprid and fluopicolide and a preparation method thereof.
Background
The imidacloprid is a nicotine ultra-high-efficiency pesticide, has broad spectrum, high efficiency, low toxicity and low residue, is not easy to generate resistance by pests, and has multiple effects of contact poisoning, stomach toxicity, systemic absorption and the like. The insecticidal composition is mainly used for preventing and treating piercing-sucking mouthpart pests such as aphids, leafhoppers, thrips, whiteflies and the like, and has a wide application scene.
Fluopyram is a pyridine amide bactericide developed first in Bayer in Germany, is widely applied to crops such as vegetables, fruit trees and the like at present, and is used for preventing and controlling important diseases such as downy mildew, late blight, damping-off and the like caused by oomycete fungi. Is safe to crops and environment, and is particularly suitable for the production of high-quality and green vegetables.
The Chinese cabbage is native in China, is an important vegetable supplied in a slack season, has the supply time as long as about 2 and a half months, is short in growing season and large in market demand, and is one of the common vegetables on the dining table of Chinese people. The pests are of various types, and diseases such as powdery mildew, downy mildew and the like easily occur, so that the serious attack is caused to the yield of the pakchoi.
Meanwhile, with the national emphasis on environmental protection and the demand of the public on healthy and safe vegetables, the national pesticide yield has been continuously reduced in nearly three years, the pesticide application reduction and efficiency improvement and the low residue of the pesticide are more and more concerned by people, and because the current pesticide has poor control effect on pests and diseases, short duration and large residue on crops and seriously harms the health of people, the pesticide composition which can comprehensively control common plant diseases and insect pests of the pakchoi, and has the effects of synergistic control, application reduction and efficiency improvement and pesticide residue reduction is urgently needed.
Disclosure of Invention
The invention aims to provide a pesticide composition containing imidacloprid and fluopicolide and a preparation method thereof, which can comprehensively prevent and treat common plant diseases and insect pests of pakchoi, play roles in synergistic prevention, application reduction and synergism and reduction of pesticide residues and solve the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: a pesticide composition containing imidacloprid and fluopicolide comprises the following raw materials in parts by weight: imidacloprid: 6-8 parts of fluopicolide: 6-8 parts of polyacrylate dispersant, 2-4 parts of modified alkyl sulfate wetting agent, 4-6 parts of nano titanium dioxide, 10-13 parts of binder, 4-6 parts of disintegrant and 23-27 parts of corn starch.
Further, the feed comprises the following raw materials in parts by weight: imidacloprid: 6 parts of fluopicolide: 7 parts, 4 parts of polyacrylate dispersant, 2 parts of modified alkyl sulfate wetting agent, 5 parts of nano titanium dioxide, 11 parts of binder, 5 parts of disintegrant and 24 parts of corn starch.
Further, the binder is polyethylene glycol 2000, and the disintegrant is ammonium sulfate.
The invention provides another technical scheme: a preparation method of a pesticide composition containing imidacloprid and fluopicolide comprises the following steps:
s1: sequentially putting imidacloprid, fluopicolide, polyacrylate dispersant, modified alkyl sulfate, nano titanium dioxide, binder, disintegrant and corn starch in a mixer according to the parts by weight, and fully and uniformly mixing for 30-40min to obtain mixed powder;
s2: pulverizing the mixed powder by jet mill to proper fineness distribution to obtain particles with particle diameter of 10-15 μm;
s3: uniformly adding water into the crushed materials in a kneader to mix, wherein the water adding amount is usually 15-20% of the total amount of the materials, and putting the kneaded wet materials into a granulator to extrude and granulate;
s4: the extruded wet granules are transferred to a fluidized bed and dried under the action of a gas stream at a suitable temperature.
Further, a suitable temperature in step 4 is 55-70 ℃.
Compared with the prior art, the invention has the beneficial effects that:
1. in the invention, the components are selected in the existing insecticidal and bactericidal composition, and imidacloprid and fluopicolide have excellent insecticidal and bactericidal effects, and the insecticidal and bactericidal effects after compounding are further enhanced, so that the composition has good comprehensive control effects on common diseases and pests of the pakchoi such as aphids, leafhoppers, downy mildew, powdery mildew and the like. Meanwhile, the modified alkyl sulfate and the polyacrylate are used in a matching manner, so that the wetting dispersibility of the modified alkyl sulfate is enhanced, and the drug effect of the modified alkyl sulfate is further improved. The ammonium sulfate as disintegrant can not only increase its disintegration and dissolution speed, but also provide fertilizer for pakchoi and increase its ability to resist diseases.
2. The nano titanium dioxide serving as an efficient photocatalyst is non-toxic and harmless, can degrade and decompose organic matters such as imidacloprid, fluopicolide and the like remained on vegetables under the action of light, effectively reduces pesticide residues on soil and crops, and meets the national environmental protection requirement and the requirement of people on pollution-free vegetables with low pesticide residues.
Detailed Description
The following examples will explain the present invention in detail, however, the present invention is not limited thereto. 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.
Example 1
A pesticide composition containing imidacloprid and fluopicolide comprises the following raw materials in parts by weight: imidacloprid: 7 parts of fluopicolide: 6 parts of polyacrylate dispersant, 3 parts of modified alkyl sulfate wetting agent, 4 parts of nano titanium dioxide, 10 parts of binder, 4 parts of disintegrant and 24 parts of corn starch. The preparation method of the pesticide composition containing imidacloprid and fluopicolide comprises the following steps:
(1) sequentially putting imidacloprid, fluopicolide, polyacrylate dispersant, modified alkyl sulfate, nano titanium dioxide, binder, disintegrant and corn starch in a mixer in parts by weight, and fully mixing for 30min to obtain mixed powder.
(2) And crushing the uniformly mixed powder into proper fineness distribution by using a jet mill to ensure that the particle size is 10-15 mu m.
(3) The crushed materials are uniformly mixed with water in a kneader. The water addition amount is usually 15-20% of the total amount of the materials, and the kneaded wet materials are put into a granulator to be extruded and granulated.
(4) The extruded wet granules were transferred to a fluidised bed and dried under a gas stream at a temperature of 55 ℃. The content of residual water in the product is preferably controlled to be 0.5-1.0%.
Example 2:
a pesticide composition containing imidacloprid and fluopicolide comprises the following raw materials in parts by weight: imidacloprid: 6 parts of fluopicolide: 7 parts, 4 parts of polyacrylate dispersant, 4 parts of modified alkyl sulfate wetting agent, 5 parts of nano titanium dioxide, 11 parts of binder, 5 parts of disintegrant and 23 parts of corn starch.
The preparation method of the pesticide composition containing imidacloprid and fluopicolide comprises the following steps:
(1) sequentially putting imidacloprid, fluopicolide, polyacrylate dispersant, modified alkyl sulfate, nano titanium dioxide, binder, disintegrant and corn starch in a mixer in parts by weight, and fully mixing for 40min to obtain mixed powder.
(2) And crushing the uniformly mixed powder into proper fineness distribution by using a jet mill to ensure that the particle size is 10-15 mu m.
(3) The crushed materials are uniformly mixed with water in a kneader. The water addition amount is usually 15-20% of the total amount of the materials, and the kneaded wet materials are put into a granulator to be extruded and granulated.
(4) The extruded wet granules were transferred to a fluidised bed and dried under a gas stream at a temperature of 70 ℃. The content of residual water in the product is preferably controlled to be 0.5-1.0%.
Example 3:
a pesticide composition containing imidacloprid and fluopicolide comprises the following raw materials in parts by weight: imidacloprid: 8 parts of fluopicolide: 6 parts of polyacrylate dispersant, 2 parts of modified alkyl sulfate wetting agent, 6 parts of nano titanium dioxide, 13 parts of binder, 6 parts of disintegrant and 25 parts of corn starch.
The preparation method of the pesticide composition containing imidacloprid and fluopicolide comprises the following steps:
(1) sequentially putting imidacloprid, fluopicolide, polyacrylate dispersant, modified alkyl sulfate, nano titanium dioxide, binder, disintegrant and corn starch in a mixer in parts by weight, and fully mixing for 35min to obtain mixed powder.
(2) And crushing the uniformly mixed powder into proper fineness distribution by using a jet mill to ensure that the particle size is 10-15 mu m.
(3) The crushed materials are uniformly mixed with water in a kneader. The water addition amount is usually 15-20% of the total amount of the materials, and the kneaded wet materials are put into a granulator to be extruded and granulated.
(4) The extruded wet granules were transferred to a fluidised bed and dried under a stream of air at a temperature of 65 ℃. The content of residual water in the product is preferably controlled to be 0.5-1.0%.
Example 4:
a pesticide composition containing imidacloprid and fluopicolide comprises the following raw materials in parts by weight: imidacloprid: 6 parts of fluopicolide: 8 parts, 5 parts of polyacrylate dispersant, 3 parts of modified alkyl sulfate wetting agent, 5 parts of nano titanium dioxide, 11 parts of binder, 5 parts of disintegrant and 27 parts of corn starch.
The preparation method of the pesticide composition containing imidacloprid and fluopicolide comprises the following steps:
(1) sequentially putting imidacloprid, fluopicolide, polyacrylate dispersant, modified alkyl sulfate, nano titanium dioxide, binder, disintegrant and corn starch in a mixer in parts by weight, and fully mixing for 33min to obtain mixed powder.
(2) And crushing the uniformly mixed powder into proper fineness distribution by using a jet mill to ensure that the particle size is 10-15 mu m.
(3) The crushed materials are uniformly mixed with water in a kneader. The water addition amount is usually 15-20% of the total amount of the materials, and the kneaded wet materials are put into a granulator to be extruded and granulated.
(4) The extruded wet granules were transferred to a fluidised bed and dried under a gas stream at a temperature of 62 ℃. The content of residual water in the product is preferably controlled to be 0.5-1.0%.
Example 5:
a pesticide composition containing imidacloprid and fluopicolide comprises the following raw materials in parts by weight: imidacloprid: 6 parts of fluopicolide: 7 parts, 4 parts of polyacrylate dispersant, 2 parts of modified alkyl sulfate wetting agent, 5 parts of nano titanium dioxide, 11 parts of binder, 5 parts of disintegrant and 24 parts of corn starch.
The preparation method of the pesticide composition containing imidacloprid and fluopicolide comprises the following steps:
(1) sequentially putting imidacloprid, fluopicolide, polyacrylate dispersant, modified alkyl sulfate, nano titanium dioxide, binder, disintegrant and corn starch in a mixer in parts by weight, and fully mixing for 32min to obtain mixed powder.
(2) And crushing the uniformly mixed powder into proper fineness distribution by using a jet mill to ensure that the particle size is 10-15 mu m.
(3) The crushed materials are uniformly mixed with water in a kneader. The water addition amount is usually 15-20% of the total amount of the materials, and the kneaded wet materials are put into a granulator to be extruded and granulated.
(4) The extruded wet granules were transferred to a fluidized bed and dried under a gas stream at a temperature of 60 ℃. The content of residual water in the product is preferably controlled to be 0.5-1.0%.
In order to further illustrate the effect of the pesticide composition on pest control, the pesticide composition containing imidacloprid and fluopicolide prepared in the embodiments 1-5 is selected, and then the pesticide agents for controlling cabbage pests in the prior art are respectively selected and labeled as the agent 1 and the agent 2 for pest control tests. The specific implementation is as follows: the test was conducted with 5 of the above examples, 2 control agents, and one clear water as a blank control,total 7 treatments, 4 repetitions of each treatment, cell area 15m2And the cultivation management conditions are consistent among all cells. Each cell is checked at fixed points for 5 points, sampling is carried out by adopting a Z-shaped 5-point sampling method, 10 plants are checked at each point, and 2 leaves are checked for each plant. And (4) carrying out insect population base number investigation before pesticide application, and carrying out residual survival insect number investigation and calculating prevention effect by the same method at 1, 3, 7, 14 and 30d after pesticide application. Prevention effect (i.e. correction of prevention effect) calculation method:
the control effect is shown in the following table 1:
TABLE 1 statistical tables of controlling effects of examples 1 to 5 and controls 1 to 2
As can be seen from the above table, the control effect of the pesticide composition containing imidacloprid and fluopicolide prepared in examples 1 to 5 on various pests reaches a peak at day 7 or day 14, and can reach more than 80%, and especially the control effect of the pesticide composition containing imidacloprid and fluopicolide prepared in example 5 on various pests can reach more than 90% at day 7 or day 14, which indicates that the formulation of example 5 is the optimal formulation, and it can also be seen from the above table that the control effect of the pesticide composition containing imidacloprid and fluopicolide prepared in examples 1 to 5 on various pests is obviously better than that of the control group of the medicament 1 and the medicament 2.
In order to further illustrate the effect of the invention on preventing and treating diseases, the pesticide composition containing imidacloprid and fluopicolide prepared in the embodiments 1 to 5 is selected, and then the medicaments for the downy mildew and powdery mildew of pakchoi in the prior art are respectively selected and labeled as medicament 1 and medicament 2 for carrying out sterilization experiments, and the specific implementation is as follows: respectively taking fresh cultures of downy mildew and powdery mildew, respectively adding phosphate buffer solution, diluting to obtain bacterial suspensions, respectively taking 1ml of the bacterial suspensions at 20 ℃, pouring 1ml of the bacterial suspensions into sterile test tubes, simultaneously respectively adding the pesticide composition containing imidacloprid and fluopicolide, the medicament 1 and the medicament 2 prepared in the embodiments 1-5 of the invention into different sterile test tubes, fully mixing to obtain mixed solution, taking the mixed solution for viable bacteria counting culture, calculating the sterilization rate after 5d, measuring the residual amount of pesticide components in the sterilized solution after 30d, repeating ten times of experiments, averaging and recording the experiment results in the following table 2.
TABLE 2 record of the results
As can be seen from table 2 above, the pesticide compositions containing imidacloprid and fluopicolide prepared in examples 1-5 of the present invention all have control effects on various diseases of more than 96%, and the residual amount on crops is less than 25%, compared with control sample 1 which has control effects on downy mildew only and powdery mildew only, control sample 2 which has control effects on powdery mildew only and downy mildew not, and control sample 1 and control sample 2 which have residual amounts on crops of more than 60%.
In conclusion, the invention can comprehensively prevent and treat common plant diseases and insect pests of the pakchoi, and has the effects of synergistic prevention and treatment, application reduction and efficiency improvement and pesticide residue reduction.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. A pesticide composition containing imidacloprid and fluopicolide is characterized by comprising the following raw materials in parts by weight: imidacloprid: 6-8 parts of fluopicolide: 6-8 parts of polyacrylate dispersant, 2-4 parts of modified alkyl sulfate wetting agent, 4-6 parts of nano titanium dioxide, 10-13 parts of binder, 4-6 parts of disintegrant and 23-27 parts of corn starch.
2. The pesticide composition containing imidacloprid and fluopicolide as claimed in claim 1, which is characterized by comprising the following raw materials in parts by weight: imidacloprid: 6 parts of fluopicolide: 7 parts, 4 parts of polyacrylate dispersant, 2 parts of modified alkyl sulfate wetting agent, 5 parts of nano titanium dioxide, 11 parts of binder, 5 parts of disintegrant and 24 parts of corn starch.
3. The pesticide composition containing imidacloprid and fluopicolide as claimed in claim 1 or 2, characterized in that the binder is polyethylene glycol 2000 and the disintegrant is ammonium sulfate.
4. A method for preparing a pesticide composition containing imidacloprid and fluopicolide according to claim 1, which is characterized by comprising the following steps:
s1: sequentially putting imidacloprid, fluopicolide, polyacrylate dispersant, modified alkyl sulfate, nano titanium dioxide, binder, disintegrant and corn starch in a mixer according to the parts by weight, and fully and uniformly mixing for 30-40min to obtain mixed powder;
s2: pulverizing the mixed powder by jet mill to proper fineness distribution to obtain particles with particle diameter of 10-15 μm;
s3: uniformly adding water into the crushed materials in a kneader to mix, wherein the water adding amount is usually 15-20% of the total amount of the materials, and putting the kneaded wet materials into a granulator to extrude and granulate;
s4: the extruded wet granules are transferred to a fluidized bed and dried under the action of a gas stream at a suitable temperature.
5. The method for preparing a pesticide composition containing imidacloprid and fluopicolide as claimed in claim 4, characterized in that the suitable temperature in step 4 is 55-70 ℃.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113826634A (en) * | 2021-10-27 | 2021-12-24 | 安徽华星化工有限公司 | Pesticide composition containing fipronil and boscalid and preparation method thereof |
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Application publication date: 20201117 |
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