CN113243373A - Weeding composition containing diflufenican, pendimethalin and butachlor - Google Patents
Weeding composition containing diflufenican, pendimethalin and butachlor Download PDFInfo
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- CN113243373A CN113243373A CN202110601451.0A CN202110601451A CN113243373A CN 113243373 A CN113243373 A CN 113243373A CN 202110601451 A CN202110601451 A CN 202110601451A CN 113243373 A CN113243373 A CN 113243373A
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- butachlor
- pendimethalin
- diflufenican
- weeding
- humectant
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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
-
- 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
- A01N25/10—Macromolecular compounds
-
- 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
- A01N33/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic nitrogen compounds
- A01N33/16—Biocides, pest repellants or attractants, or plant growth regulators containing organic nitrogen compounds containing nitrogen-to-oxygen bonds
- A01N33/18—Nitro compounds
-
- 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
- A01N37/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids
- A01N37/18—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing the group —CO—N<, e.g. carboxylic acid amides or imides; Thio analogues thereof
- A01N37/26—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing the group —CO—N<, e.g. carboxylic acid amides or imides; Thio analogues thereof containing the group; Thio analogues thereof
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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
- A01N43/02—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms
- A01N43/04—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom
- A01N43/14—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom six-membered rings
- A01N43/16—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom six-membered rings with oxygen as the ring hetero atom
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B7/00—Fertilisers based essentially on alkali or ammonium orthophosphates
-
- 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
- C05G3/40—Mixtures of one or more fertilisers with additives not having a specially fertilising activity for affecting fertiliser dosage or release rate; for affecting solubility
-
- 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
-
- 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
- C05G3/70—Mixtures of one or more fertilisers with additives not having a specially fertilising activity for affecting wettability, e.g. drying agents
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F251/00—Macromolecular compounds obtained by polymerising monomers on to polysaccharides or derivatives thereof
- C08F251/02—Macromolecular compounds obtained by polymerising monomers on to polysaccharides or derivatives thereof on to cellulose or derivatives thereof
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- Life Sciences & Earth Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Plant Pathology (AREA)
- Dentistry (AREA)
- Engineering & Computer Science (AREA)
- Agronomy & Crop Science (AREA)
- Organic Chemistry (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Toxicology (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention discloses a weeding composition containing diflufenican, pendimethalin and butachlor, relating to the field of pesticides, the diflufenican, the pendimethalin and the butachlor are reasonably compounded, so that the weeding composition has excellent weeding performance, and a humectant is added at the same time, the humectant has the capability of absorbing fertilizer, absorbing water and absorbing weeding active ingredients, the water absorption performance of the humectant can enhance the drought resistance and lodging resistance of crops, and the immunity of the crops can be enhanced, meanwhile, the root system of the plant is promoted to be developed, the number of root hairs, fibrous roots and secondary roots is greatly increased, the rhizosphere state is fully activated, nutrient molecules are dissolved by the fertilizer absorption performance, nutrients such as nitrogen, phosphorus, potassium and the like can be fully and effectively absorbed by the crop, the effective ingredients can be long-acting by absorbing the weeding active ingredients, the weeding effect can be achieved for a long time, the further absorption of the crop nutrients is ensured, and the growth of the crop is promoted.
Description
Technical Field
The invention relates to the field of pesticides, and particularly relates to a herbicidal composition containing diflufenican, pendimethalin and butachlor.
Background
In the actual process of agricultural production, the application of chemical herbicide is the most effective means in farmland weed control, butachlor mainly inhibits the growth of cells by inhibiting the synthesis of protein, namely, the synthesis of protein in vivo is inhibited by the absorption of weed buds and young secondary roots, so that the weed young plants are swollen, deformed and dark green, and finally die; diflufenican belongs to carotenoid biosynthesis inhibitors, and causes chlorophyll damage, cell disruption and plant death; pendimethalin is a dinitrotoluidine herbicide, mainly inhibits meristem cell division, does not influence the germination of weed seeds, but acts after a young bud, a stem and a root absorb a medicament in the germination process of the weed seeds, the absorption part of a dicotyledonous plant is a hypocotyl, a monocotyledonous plant is a young bud, and the damage symptom is that the young bud and a secondary root are inhibited to achieve the purpose of weeding;
the above pesticides can effectively weed, but the problems of herbicide residue, environmental pollution, weed drug resistance and resistance development and the like are easily caused by long-term continuous high-dose application of chemical herbicides with single variety or action mode, and the reasonable compounding or mixing of the chemical herbicides has the characteristics of expanding a weed spectrum, improving the preventing and killing effect, prolonging the application suitable period, reducing the dosage, reducing the phytotoxicity, reducing the residue, delaying the occurrence and development of the drug resistance and drug resistance of weeds and the like;
however, the existing weeding compositions have a common weeding effect and cannot effectively promote the growth of crops, and a solution is provided for solving the technical defect.
Disclosure of Invention
In order to overcome the technical problems, the invention aims to provide a weeding composition containing diflufenican, pendimethalin and butachlor, which comprises the following components in percentage by weight: the diflufenican, the pendimethalin and the butachlor are reasonably compounded, so that the weeding composition has excellent weeding performance, meanwhile, the humectant is added, the humectant has the capability of absorbing fertilizer, absorbing water and attracting weeding active ingredients, the water absorption performance enhances the drought resistance and lodging resistance of crops, enhances the immunity, promotes the development of plant root systems, greatly increases the number of root hairs, fibrous roots and secondary roots, fully activates the rhizosphere state, dissolves nutrient molecules due to the fertilizer absorption performance, enables the nutrients such as nitrogen, phosphorus, potassium and the like to be fully and effectively absorbed by the crops, attracts the weeding active ingredients to enable the effective ingredients to be long-acting, achieves the weeding effect for a long time, ensures that the nutrients of the crops can be further absorbed, promotes the growth of the crops, and solves the problems that the weeding effect of the existing weeding composition is general and the growth of the crops cannot be effectively promoted.
The purpose of the invention can be realized by the following technical scheme:
a weeding composition containing diflufenican, pendimethalin and butachlor comprises the following components in parts by weight:
0.5-20 parts of diflufenican suspending agent, 5-50 parts of pendimethalin, 15-60 parts of butachlor and 2-22 parts of humectant;
the preparation method of the humectant comprises the following steps:
s1: crushing waste paper into 2-5cm small pieces, washing the small pieces of distilled water for 2-3 times, soaking the small pieces of distilled water in a sodium hydroxide solution, stirring the small pieces of distilled water for 5-6 hours at the temperature of 25-35 ℃ and the stirring speed of 300-500r/min, then carrying out vacuum filtration, washing a filter cake to be neutral by using distilled water, then placing the washed filter cake in a vacuum drying box, drying the filter cake to be constant weight at the temperature of 90-100 ℃, crushing a dried product and sieving the dried product by using a 100-mesh sieve to obtain waste paper cellulose;
s2: adding waste paper cellulose, a cross-linking agent, an initiator and a neutralizer into a three-neck flask provided with a magnetic stirrer, a thermometer, a reflux condenser tube and an air guide tube, then adding deionized water, stirring at the stirring speed of 300-500r/min until the solid is completely dissolved to obtain an intermediate product A, then adding acrylic acid and itaconic acid to generate a precipitate, continuously stirring for 5-10min, then heating to 30 ℃, controlling the heating rate to be 0.5 ℃/min, continuously stirring until the precipitate disappears, introducing nitrogen for 20-30min, removing oxygen in water, continuously heating to 75 ℃, controlling the heating rate to be 2 ℃/min, continuously stirring and reacting for 3-5h, drying and crushing the reaction product to 40-90 meshes after the reaction is finished, and obtaining the humectant.
The reaction principle is as follows:
as a further scheme of the invention: the reaction principle is as follows:
waste paper cellulose is formed by treating waste paper, ammonium persulfate forms sulfate radical anion free radical through thermal decomposition, the free radicals deprive hydroxyl on the waste paper cellulose to form corresponding alkoxy free radicals to obtain an intermediate product A, then the intermediate product A initiates monomer acrylic acid and itaconic acid to be grafted to cellulose molecules of the intermediate product A to form a high molecular polymer, then a cross-linked three-dimensional network structure is formed under the action of a cross-linking agent to obtain the humectant, a large amount of hydroxyl and carboxyl exist on the plant water absorption and moisture retention agent, and the plant water absorption and moisture retention agent has excellent water absorption and moisture retention property and can provide sufficient water for crops, the humectant can slowly release the weeding active ingredients, improve the weeding timeliness, and the ammonium persulfate is used as an initiator, and the dipotassium hydrogen phosphate is used as a neutralizer, so that nitrogen, phosphorus and potassium elements can be provided, the elements are essential elements for the growth of crops, the growth of the crops is promoted, and the effect of a fertilizer is achieved.
As a further scheme of the invention: the diflufenican suspending agent is 48% in mass fraction.
As a further scheme of the invention: the dosage ratio of the waste paper powder to the sodium hydroxide solution in the step S1 is 1 g: 5-10mL, and the mass fraction of the sodium hydroxide solution is 1.5%.
As a further scheme of the invention: the dosage ratio of the waste paper cellulose, the cross-linking agent, the initiator, the neutralizer, the deionized water, the acrylic acid and the itaconic acid in the step S2 is 1 g: 0.12 g: 0.18 g: 3.5 g: 50mL of: 9 g: 2g, the cross-linking agent is N, N' -methylene bisacrylamide, the initiator is ammonium persulfate, and the neutralizing agent is dipotassium hydrogen phosphate.
As a further scheme of the invention: the pesticide formulation prepared from the weeding composition is one of suspoemulsion, water suspension, dispersible oil suspension, missible oil, wettable powder, water dispersible granules and emulsion in water.
As a further scheme of the invention:
the invention has the beneficial effects that:
according to the weeding composition containing diflufenican, pendimethalin and butachlor, disclosed by the invention, diflufenican, pendimethalin and butachlor are reasonably compounded, so that the weeding composition has excellent weeding performance, meanwhile, a humectant is added, the humectant has the capability of absorbing fertilizer, absorbing water and attracting weeding active ingredients, the water absorption performance enhances the drought resistance and lodging resistance of crops, enhances the immunity, promotes the development of plant root systems, greatly increases the number of root hairs, fibrous roots and secondary roots, fully activates the rhizosphere state, dissolves nutrient molecules due to the fertilizer absorption performance, enables the nutrients such as nitrogen, phosphorus, potassium and the like to be fully and effectively absorbed by the crops, attracts the weeding active ingredients to enable the effective ingredients to be long-acting, realizes the weeding effect for a long time, ensures that the nutrients of the crops can be further absorbed, and promotes the growth of the crops;
the preparation process of the weeding composition also prepares a humectant, waste paper cellulose is formed by processing waste paper, waste paper is used as a raw material, resources are changed into things of value and saved, ammonium persulfate is thermally decomposed to form sulfate radical anion free radicals, the free radicals take hydroxyl groups on the waste paper cellulose to form corresponding alkoxy free radicals, an intermediate product A is obtained, the intermediate product A initiates monomer acrylic acid and itaconic acid to be grafted on cellulose molecules of the intermediate product A to form a high polymer, a cross-linked three-dimensional network structure is formed under the action of a cross-linking agent, the humectant is obtained, a large number of hydroxyl groups and carboxyl groups are arranged on the humectant, the humectant has excellent water absorption and moisture retention properties, can provide sufficient moisture for crops, can achieve a slow release effect on weeding active ingredients, improves weeding timeliness, uses ammonium persulfate as an initiator and dipotassium hydrogen phosphate as a neutralizing agent, can provide nitrogen, phosphorus and potassium elements which are essential elements for crop growth, promote crop growth and play a role of fertilizer.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious 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.
Example 1:
the embodiment is a humectant, and the preparation method of the humectant is as follows:
s1: crushing waste paper to form 5cm small pieces, washing the small pieces with distilled water for 2 times, soaking the small pieces in a sodium hydroxide solution, stirring for 5 hours at the temperature of 25 ℃ and the stirring speed of 300r/min, then carrying out vacuum filtration, washing a filter cake to be neutral by using distilled water, then placing the washed filter cake in a vacuum drying box, drying the filter cake to constant weight at the temperature of 90 ℃, crushing the dried product and sieving the dried product with a 100-mesh sieve to obtain waste paper cellulose; controlling the dosage ratio of the waste paper powder to the sodium hydroxide solution to be 1 g: 10mL, and the mass fraction of the sodium hydroxide solution is 1.5%;
s2: adding waste paper cellulose, a cross-linking agent, an initiator and a neutralizer into a three-neck flask provided with a magnetic stirrer, a thermometer, a reflux condenser tube and a gas guide tube, then adding deionized water, stirring at a stirring speed of 300r/min until the solid is completely dissolved to obtain an intermediate product A, then adding acrylic acid and itaconic acid to generate a precipitate, continuously stirring for 5min, then heating to 30 ℃, controlling the heating rate to be 0.5 ℃/min, continuously stirring until the precipitate disappears, introducing nitrogen for 20min, removing oxygen in water, continuously heating to 75 ℃, controlling the heating rate to be 2 ℃/min, continuously stirring for reaction for 3h, drying and crushing the reaction product to 40 meshes after the reaction is finished, and obtaining a humectant; controlling the dosage ratio of the waste paper cellulose, the cross-linking agent, the initiator, the neutralizer, the deionized water, the acrylic acid and the itaconic acid to be 1 g: 0.12 g: 0.18 g: 3.5 g: 50mL of: 9 g: 2g, the cross-linking agent is N, N' -methylene bisacrylamide, the initiator is ammonium persulfate, and the neutralizing agent is dipotassium hydrogen phosphate.
Example 2:
the embodiment is a humectant, and the preparation method of the humectant is as follows:
s1: crushing waste paper to form 2cm small pieces, washing the small pieces with distilled water for 3 times, soaking the small pieces in a sodium hydroxide solution, stirring for 6 hours at the temperature of 35 ℃ and the stirring speed of 500r/min, then carrying out vacuum filtration, washing a filter cake to be neutral by using distilled water, then placing the washed filter cake in a vacuum drying box, drying the filter cake to constant weight at the temperature of 100 ℃, crushing the dried product and sieving the dried product with a 100-mesh sieve to obtain waste paper cellulose; controlling the dosage ratio of the waste paper powder to the sodium hydroxide solution to be 1 g: 5mL, wherein the mass fraction of the sodium hydroxide solution is 1.5%;
s2: adding waste paper cellulose, a cross-linking agent, an initiator and a neutralizer into a three-neck flask provided with a magnetic stirrer, a thermometer, a reflux condenser tube and a gas guide tube, then adding deionized water, stirring at a stirring speed of 500r/min until the solid is completely dissolved to obtain an intermediate product A, then adding acrylic acid and itaconic acid to generate a precipitate, continuing stirring for 10min, then heating to 30 ℃, controlling the heating rate to be 0.5 ℃/min, continuing stirring until the precipitate disappears, introducing nitrogen for 30min, removing oxygen in water, continuing heating to 75 ℃, controlling the heating rate to be 2 ℃/min, continuing stirring for reaction for 5h, drying and crushing the reaction product to 90 meshes after the reaction is finished, and obtaining a humectant; controlling the dosage ratio of the waste paper cellulose, the cross-linking agent, the initiator, the neutralizer, the deionized water, the acrylic acid and the itaconic acid to be 1 g: 0.12 g: 0.18 g: 3.5 g: 50mL of: 9 g: 2g, the cross-linking agent is N, N' -methylene bisacrylamide, the initiator is ammonium persulfate, and the neutralizing agent is dipotassium hydrogen phosphate.
Example 3:
the embodiment is a weeding composition containing diflufenican, pendimethalin and butachlor, which comprises the following components in parts by weight:
diflufenican suspension concentrate 0.5, pendimethalin 5, butachlor 15, humectant from example 1 2;
the components are prepared into a suspending agent with the mass percentage of 50% according to a conventional preparation method, and then the suspending agent is diluted by 1000 times by adding water to prepare the pesticide spraying liquid.
Example 4:
the embodiment is a weeding composition containing diflufenican, pendimethalin and butachlor, which comprises the following components in parts by weight:
diflufenican suspension 20 parts, pendimethalin 50 parts, butachlor 60 parts, humectant 22 parts from example 2;
the components are prepared into a suspending agent with the mass percentage of 50% according to a conventional preparation method, and then the suspending agent is diluted by 1000 times by adding water to prepare the pesticide spraying liquid.
Comparative example 1:
comparative example 1 differs from example 4 in that no humectant was added.
Comparative example 2:
comparative example 2 is a herbicidal composition comprising diflufenican and butachlor in application No. CN 201610533499.1.
Comparative example 3:
comparative example 3 differs from comparative example 2 in that a humectant was added.
The pesticides of examples 3-4 and comparative examples 1-3 were uniformly sprayed using a knapsack sprayer, the sprayer was a sector spray nozzle dedicated for herbicides, the uniform spray solution was sprayed in a wheat test field, and the weed death and crop growth were observed after 20 days after application, respectively, and the 20d growth rate was (average height after application-average height before application)/average height before application x 100%, and the test results were as follows:
the data in the table show that the herbicide has a good weeding effect under the reasonable compatibility of diflufenican, pendimethalin and butachlor, can promote the growth of crops, and is further beneficial to the growth of crops after the humectant is added.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is illustrative and explanatory only and is not intended to be exhaustive or to limit the invention to the precise embodiments described, and various modifications, additions, and substitutions may be made by those skilled in the art without departing from the scope of the invention or exceeding the scope of the claims.
Claims (5)
1. A weeding composition containing diflufenican, pendimethalin and butachlor is characterized by comprising the following components in parts by weight:
0.5-20 parts of diflufenican suspending agent, 5-50 parts of pendimethalin, 15-60 parts of butachlor and 2-22 parts of humectant;
the preparation method of the humectant comprises the following steps:
s1: crushing waste paper into 2-5cm small pieces, washing the small pieces of distilled water for 2-3 times, soaking the small pieces of distilled water in a sodium hydroxide solution, stirring the small pieces of distilled water for 5-6 hours at the temperature of 25-35 ℃ and the stirring speed of 300-500r/min, then carrying out vacuum filtration, washing a filter cake to be neutral by using distilled water, then placing the washed filter cake in a vacuum drying box, drying the filter cake to be constant weight at the temperature of 90-100 ℃, crushing a dried product and sieving the dried product by using a 100-mesh sieve to obtain waste paper cellulose;
s2: adding waste paper cellulose, a cross-linking agent, an initiator and a neutralizer into a three-neck flask provided with a magnetic stirrer, a thermometer, a reflux condenser tube and a gas guide tube, then adding deionized water, stirring at the stirring speed of 300-500r/min until the solid is completely dissolved to obtain an intermediate product A, then adding acrylic acid and itaconic acid to generate a precipitate, continuing stirring for 5-10min, then heating to 30 ℃, controlling the heating rate to be 0.5 ℃/min, continuing stirring until the precipitate disappears, introducing nitrogen for 20-30min, continuing heating to 75 ℃, controlling the heating rate to be 2 ℃/min, continuing stirring for reaction for 3-5h, drying and crushing the reaction product to 40-90 meshes after the reaction is finished, and obtaining the humectant.
2. The diflufenican-containing, pendimethalin and butachlor herbicidal composition as claimed in claim 1, wherein the mass fraction of the diflufenican suspending agent is 48%.
3. The herbicidal composition containing diflufenican, pendimethalin and butachlor as claimed in claim 1, wherein said waste paper powder and sodium hydroxide solution in step S1 are used in a ratio of 1 g: 5-10mL, and the mass fraction of the sodium hydroxide solution is 1.5%.
4. The herbicidal composition containing diflufenican, pendimethalin and butachlor as claimed in claim 1, wherein said waste paper cellulose, cross-linking agent, initiator, neutralizing agent, deionized water, acrylic acid and itaconic acid are used in a ratio of 1g in step S2: 0.12 g: 0.18 g: 3.5 g: 50mL of: 9 g: 2g, the cross-linking agent is N, N' -methylene bisacrylamide, the initiator is ammonium persulfate, and the neutralizing agent is dipotassium hydrogen phosphate.
5. The weeding composition containing diflufenican, pendimethalin and butachlor according to claim 1, wherein the pesticide formulation prepared by the weeding composition is one of suspoemulsion, water suspension, dispersible oil suspension, emulsifiable concentrate, wettable powder, water dispersible granule and water emulsion.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110601451.0A CN113243373A (en) | 2021-05-31 | 2021-05-31 | Weeding composition containing diflufenican, pendimethalin and butachlor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110601451.0A CN113243373A (en) | 2021-05-31 | 2021-05-31 | Weeding composition containing diflufenican, pendimethalin and butachlor |
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| CN113243373A true CN113243373A (en) | 2021-08-13 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101578046A (en) * | 2006-12-11 | 2009-11-11 | 伊萨格罗股份公司 | Herbicidal compositions |
| CN102432761A (en) * | 2011-11-24 | 2012-05-02 | 江苏瑞丰科技实业有限公司 | Nutritional type water-retaining agent for plants growing on drought soil and preparation method thereof |
| CN106035338A (en) * | 2016-07-07 | 2016-10-26 | 江苏辉丰农化股份有限公司 | Herbicidal composition comprising diflufenican and butachlor |
| CN111757672A (en) * | 2018-02-28 | 2020-10-09 | 拜耳公司 | Method for reducing crop damage |
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2021
- 2021-05-31 CN CN202110601451.0A patent/CN113243373A/en active Pending
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|---|---|---|---|---|
| CN101578046A (en) * | 2006-12-11 | 2009-11-11 | 伊萨格罗股份公司 | Herbicidal compositions |
| CN102432761A (en) * | 2011-11-24 | 2012-05-02 | 江苏瑞丰科技实业有限公司 | Nutritional type water-retaining agent for plants growing on drought soil and preparation method thereof |
| CN106035338A (en) * | 2016-07-07 | 2016-10-26 | 江苏辉丰农化股份有限公司 | Herbicidal composition comprising diflufenican and butachlor |
| CN111757672A (en) * | 2018-02-28 | 2020-10-09 | 拜耳公司 | Method for reducing crop damage |
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