CN113040152A - Compound herbicide for rice based on triclopyr and pyriminobac-methyl - Google Patents
Compound herbicide for rice based on triclopyr and pyriminobac-methyl Download PDFInfo
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- CN113040152A CN113040152A CN202110286942.0A CN202110286942A CN113040152A CN 113040152 A CN113040152 A CN 113040152A CN 202110286942 A CN202110286942 A CN 202110286942A CN 113040152 A CN113040152 A CN 113040152A
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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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- 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
- A01N43/48—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with two nitrogen atoms as the only ring hetero atoms
- A01N43/54—1,3-Diazines; Hydrogenated 1,3-diazines
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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
- A01N65/00—Biocides, pest repellants or attractants, or plant growth regulators containing material from algae, lichens, bryophyta, multi-cellular fungi or plants, or extracts 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
- A01N65/00—Biocides, pest repellants or attractants, or plant growth regulators containing material from algae, lichens, bryophyta, multi-cellular fungi or plants, or extracts thereof
- A01N65/40—Liliopsida [monocotyledons]
- A01N65/42—Aloeaceae [Aloe family] or Liliaceae [Lily family], e.g. aloe, veratrum, onion, garlic or chives
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05C—NITROGENOUS FERTILISERS
- C05C5/00—Fertilisers containing other nitrates
- C05C5/02—Fertilisers containing other nitrates containing sodium or potassium nitrate
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- 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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
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Abstract
The invention discloses a compound herbicide for rice based on triclopyr and pyriminobac-methyl, which comprises the following components in percentage by weight: 1-60% of triclopyr, 1-30% of pyriminobac-methyl, 4-15% of garlic extract, 2-10% of potassium nitrate, 1-3% of surfactant, 1-3% of dispersant, 1-3% of defoamer, 1-3% of antifreeze agent, 5-20% of triethanolamine, 3-10% of vegetable oil and the balance of carrier. The invention adopts the combination of triclopyr and pyriminobac-methyl, enlarges the weeding spectrum, is suitable for removing broadleaf weeds and grassy weeds in rice fields, and is added with a plant extraction preparation, thereby reducing the dosage of organic chemical herbicide, reducing the environmental hazard, having a certain insecticidal effect, and in addition, the potassium nitrate provides N, K element, thus being capable of fertilizing the land.
Description
Technical Field
The invention belongs to the technical field of herbicides, and relates to a compound herbicide for rice based on triclopyr and pyriminobac-methyl.
Background
Herbicides are agents which cause complete or selective death of weeds, also known as herbicides, and are used to kill or inhibit the growth of plants. The herbicide has the characteristics of low cost, high efficiency, simple and convenient operation, labor saving, obvious weed control effect and the like, and is widely applied in agriculture.
Rice is one of the main grain crops in the world, and the planting area is very wide. The grass damage is a great factor of crop yield reduction, and the economic loss of the global agriculture due to the grass damage exceeds $ 950 billion per year, and the threat degree of the crop damage exceeds the plant diseases and insect pests. The weeds in rice fields in China have the largest occurrence and harm areas of barnyard grass, and are shaped cyperus rotundus, monochoria vaginalis, flatstem bamboo basket grasses, moleplant seeds, potamogeton indica and the like, the early rice farmers use the medicaments such as oxadiazon, oxyfluorfen and the like to prevent and treat the main broadleaf weeds in the rice fields, neglect to prevent and treat the gramineous weeds such as weedy rice, barnyard grass and the like, and only one single herbicide cannot completely and effectively control the occurrence of the broadleaf weeds and the gramineous weeds, so that the development of a compound herbicide with wide weeding spectrum, safety and environmental protection is one of the problems to be solved in the industry at present.
Disclosure of Invention
The invention aims to provide a compound herbicide for rice based on triclopyr and pyriminobac-methyl, which is compounded by triclopyr and pyriminobac-methyl to expand the weeding spectrum, is suitable for removing broadleaf weeds and gramineous weeds in rice fields, is added with a plant extract preparation to reduce the dosage of organic chemical herbicides and reduce environmental hazards, and has a certain insecticidal effect, and in addition, potassium nitrate provides N, K elements, so that the compound herbicide for rice can fertilize the soil and nourish crops.
The purpose of the invention can be realized by the following technical scheme:
a compound herbicide for rice based on triclopyr and pyriminobac-methyl comprises the following components in percentage by weight:
1-60% of triclopyr, 1-30% of pyriminobac-methyl, 4-15% of garlic extract, 2-10% of potassium nitrate, 1-3% of surfactant, 1-3% of dispersant, 1-3% of defoamer, 1-3% of antifreeze agent, 5-20% of triethanolamine, 3-10% of vegetable oil and the balance of carrier;
a compound herbicide for rice based on triclopyr and pyriminobac-methyl is prepared by the following steps:
step A1, mixing triclopyr, pyriminobac-methyl, garlic extract, potassium nitrate and a carrier, and ultrasonically dispersing for 50-70 minutes at an ultrasonic frequency of 80-90kHz to prepare a mixture a;
step A2, adding a surfactant, a dispersant, a defoamer and an antifreeze into the mixture a prepared in the step A1, controlling the heating temperature to be 60-75 ℃, and mixing and reacting for 3-4 hours at the stirring speed of 250-280rpm to prepare a mixture b;
step A3, mixing and stirring triethanolamine, vegetable oil and the mixture b prepared in the step A2 at the speed of 260-280rpm for 0.5-1 hour, heating to 60-70 ℃, keeping the temperature for reaction for 5-7 hours, and cooling to room temperature to obtain the compound herbicide for rice.
Further, the formulation of the compound herbicide for rice is one of dispersible oil suspending agent, wettable powder and water dispersible granule.
Further, the carrier in the step a1 is one of deionized water, a solvent or a filler, the solvent is one or more of N, N-dimethylformamide, cyclohexanone, toluene, ethanol, ethanolamine, propanol, butanol, ethylene glycol, butyl ether, ethyl acetate or acetonitrile, and the filler is one or more of diatomaceous earth, bentonite, white carbon black and light calcium carbonate.
Further, the surfactant in the step a2 is one or more of sodium dodecyl benzene sulfonate, ethyl silicone oil and methyl hydrogen silicone oil, the dispersant is one or more of polyoxyethylene triphenylethylene phenyl phosphate, alkyl naphthalene sulfonate and alkylphenol polyoxyethylene ether, the defoamer is an organic silicon defoamer, and the antifreeze is one or more of propylene glycol, glycerol and ethylene glycol, which are mixed in any proportion.
Further, the vegetable oil in step A3 is one or more of salad oil, soybean oil, castor oil, corn oil, and olive oil, and is mixed in any proportion.
Further, the garlic extract liquid in the step A1 is prepared by the following steps:
step S1, smashing garlic, adding the mashed garlic into a flask, adding distilled water, soaking for 30-40 minutes, heating and refluxing for 4-5 hours, centrifugally separating the extracting solution at 3000-3200rpm for 10-15 minutes, and removing precipitates to obtain a mixed solution a;
and step S2, performing flash evaporation concentration on the mixed solution a prepared in the step S1 at the temperature of 60-70 ℃ to 5-10% of the original volume, and cooling to room temperature to obtain the garlic extract.
Further, the usage amount of the garlic in the step S1 is 15-20g, the usage amount of the distilled water is 4-5 times of the mass of the garlic, and the heating temperature is 45-55 ℃.
The invention has the beneficial effects that: the triclopyr and the pyriminobac-methyl are compounded, the effects are complementary, the weeding spectrum is wider, the weeding activity is high, the weeding effect is more excellent, wherein the triclopyr belongs to the systemic conduction type selective herbicide, is absorbed by the leaf surface and the root system of the plant, and is conducted to the whole plant in the plant body to cause the malformation of roots, stems and leaves, the depletion of stored substances, the embolism or the rupture of vascular bundles, the gradual death of the plant, is suitable for preventing and killing broad leaf weeds, the pyriminobac-methyl is suitable for preventing and killing gramineous weeds such as barnyard grass in a paddy field by inhibiting the synthesis of acetolactate synthase and hindering the biosynthesis of amino acid, so that the cells of weed plants stop dividing until the cells die; meanwhile, the potassium nitrate provides N, K elements, so that the compound herbicide for rice can fertilize the soil and nourish crops, has small environmental pollution and good effect, is beneficial to the healthy growth of crops, and has wide application prospect.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood 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
A compound herbicide for rice based on triclopyr and pyriminobac-methyl comprises the following components in percentage by weight: 1% of triclopyr, 25% of pyriminobac-methyl, 5% of garlic extract, 2% of potassium nitrate, 1% of surfactant, 1% of dispersant, 1% of defoamer, 1% of antifreeze agent, 10% of triethanolamine, 5% of vegetable oil and the balance of carrier;
a compound herbicide for rice based on triclopyr and pyriminobac-methyl is prepared by the following steps:
step A1, mixing triclopyr, pyriminobac-methyl, garlic extract, potassium nitrate and a carrier, and ultrasonically dispersing for 50 minutes at an ultrasonic frequency of 80kHz to prepare a mixture a;
step A2, adding a surfactant, a dispersing agent, a defoaming agent and an anti-freezing agent into the mixture a prepared in the step A1, controlling the heating temperature to be 60 ℃, and mixing and reacting for 3 hours under the condition that the stirring speed is 250rpm to prepare a mixture b;
and step A3, mixing and stirring triethanolamine, vegetable oil and the mixture b prepared in the step A2 at the speed of 260rpm for 0.5 hour, heating to 60 ℃, keeping the temperature for reaction for 5 hours, and cooling to room temperature to obtain the compound herbicide for rice.
Wherein, the carrier in the step A1 is deionized water.
Wherein the surfactant in the step A2 is sodium dodecyl benzene sulfonate, the dispersant is polyoxyethylene triphenylethylene phenyl phosphate, the defoaming agent is an organic silicon defoaming agent, and the antifreeze agent is ethylene glycol.
Wherein the vegetable oil in the step A3 is prepared by mixing salad oil and soybean oil in a mass ratio of 1: 4.
The garlic extract liquid obtained in the step A1 is prepared by the following steps:
step S1, smashing garlic, adding the mashed garlic into a flask, adding distilled water, soaking for 30 minutes, heating and refluxing for 4 hours, centrifugally separating the extracting solution at 3000rpm for 10 minutes, and removing precipitates to obtain a mixed solution a;
and step S2, performing flash evaporation concentration on the mixed solution a prepared in the step S1 at the temperature of 60 ℃ to 5% of the original volume, and cooling to room temperature to obtain the garlic extract.
Wherein the using amount of the garlic in the step S1 is 15g, the using amount of the distilled water is 4 times of the mass of the garlic, and the heating temperature is 45 ℃.
Example 2
A compound herbicide for rice based on triclopyr and pyriminobac-methyl comprises the following components in percentage by weight: 15% of triclopyr, 30% of pyriminobac-methyl, 8% of garlic extract, 5% of potassium nitrate, 2% of surfactant, 2% of dispersant, 2% of defoamer, 2% of antifreeze agent, 10% of triethanolamine, 4% of vegetable oil and the balance of carrier;
a compound herbicide for rice based on triclopyr and pyriminobac-methyl is prepared by the following steps:
step A1, mixing triclopyr, pyriminobac-methyl, garlic extract, potassium nitrate and a carrier, and performing ultrasonic dispersion for 60 minutes at the ultrasonic frequency of 85kHz to obtain a mixture a;
step A2, adding a surfactant, a dispersing agent, a defoaming agent and an anti-freezing agent into the mixture a prepared in the step A1, controlling the heating temperature to be 65 ℃, and mixing and reacting for 3.5 hours under the condition that the stirring speed is 260rpm to prepare a mixture b;
and step A3, mixing and stirring triethanolamine, vegetable oil and the mixture b prepared in the step A2 at the speed of 270rpm for 1 hour, heating to 65 ℃, keeping the temperature, reacting for 6 hours, and cooling to room temperature to obtain the compound herbicide for rice.
Wherein, the carrier in the step A1 is a solvent, and the solvent is N, N-dimethylformamide.
Wherein the surfactant in the step A2 is ethyl silicone oil, the dispersant is alkylphenol ethoxylate, the defoaming agent is an organic silicon defoaming agent, and the antifreeze agent is propylene glycol.
Wherein the vegetable oil in step A3 is olive oil.
The garlic extract liquid obtained in the step A1 is prepared by the following steps:
step S1, smashing garlic, adding the mashed garlic into a flask, adding distilled water, soaking for 35 minutes, heating and refluxing for 4.5 hours, centrifugally separating the extracting solution at 3100rpm for 12 minutes, and removing precipitates to obtain a mixed solution a;
and step S2, carrying out flash evaporation concentration on the mixed solution a prepared in the step S1 at 65 ℃ to 8% of the original volume, and cooling to room temperature to obtain the garlic extract.
Wherein the using amount of the garlic in the step S1 is 17g, the using amount of the distilled water is 4.5 times of the mass of the garlic, and the heating temperature is 50 ℃.
Example 3
A compound herbicide for rice based on triclopyr and pyriminobac-methyl comprises the following components in percentage by weight: 30% of triclopyr, 15% of pyriminobac-methyl, 6% of garlic extract, 7% of potassium nitrate, 3% of surfactant, 3% of dispersant, 3% of defoamer, 3% of antifreeze agent, 5% of triethanolamine, 5% of vegetable oil and the balance of carrier;
a compound herbicide for rice based on triclopyr and pyriminobac-methyl is prepared by the following steps:
step A1, mixing triclopyr, pyriminobac-methyl, garlic extract, potassium nitrate and a carrier, and performing ultrasonic dispersion for 70 minutes at the ultrasonic frequency of 90kHz to obtain a mixture a;
step A2, adding a surfactant, a dispersing agent, a defoaming agent and an anti-freezing agent into the mixture a prepared in the step A1, controlling the heating temperature to be 75 ℃, and mixing and reacting for 3 hours under the condition that the stirring speed is 280rpm to prepare a mixture b;
and step A3, mixing and stirring triethanolamine, vegetable oil and the mixture b prepared in the step A2 at the speed of 270rpm for 0.5 hour, heating to 65 ℃, keeping the temperature, reacting for 6.5 hours, and cooling to room temperature to obtain the compound herbicide for rice.
Wherein, the carrier in the step A1 is deionized water.
Wherein the surfactant in the step A2 is ethyl silicone oil, the dispersant is alkylphenol ethoxylate, the defoaming agent is an organic silicon defoaming agent, and the antifreeze agent is propylene glycol.
Wherein, the vegetable oil in the step A3 is castor oil.
The garlic extract liquid obtained in the step A1 is prepared by the following steps:
step S1, smashing garlic, adding the mashed garlic into a flask, adding distilled water, soaking for 35 minutes, heating and refluxing for 4.5 hours, centrifugally separating the extracting solution at 3000rpm for 10 minutes, and removing precipitates to obtain a mixed solution a;
and step S2, carrying out flash evaporation concentration on the mixed solution a prepared in the step S1 at 65 ℃ to 8% of the original volume, and cooling to room temperature to obtain the garlic extract.
Wherein the using amount of the garlic in the step S1 is 19g, the using amount of the distilled water is 4.5 times of the mass of the garlic, and the heating temperature is 50 ℃.
Example 4
A compound herbicide for rice based on triclopyr and pyriminobac-methyl comprises the following components in percentage by weight: 10% of triclopyr, 20% of pyriminobac-methyl, 10% of garlic extract, 5% of potassium nitrate, 1% of surfactant, 1% of dispersant, 1% of defoamer, 1% of antifreeze agent, 15% of triethanolamine, 6% of vegetable oil and the balance of carrier;
a compound herbicide for rice based on triclopyr and pyriminobac-methyl is prepared by the following steps:
step A1, mixing triclopyr, pyriminobac-methyl, garlic extract, potassium nitrate and a carrier, and performing ultrasonic dispersion for 70 minutes at the ultrasonic frequency of 90kHz to obtain a mixture a;
step A2, adding a surfactant, a dispersing agent, a defoaming agent and an anti-freezing agent into the mixture a prepared in the step A1, controlling the heating temperature to be 75 ℃, and mixing and reacting for 4 hours under the condition that the stirring speed is 280rpm to prepare a mixture b;
and step A3, mixing and stirring triethanolamine, vegetable oil and the mixture b prepared in the step A2 at the speed of 280rpm for 1 hour, heating to 70 ℃, keeping the temperature, reacting for 7 hours, and cooling to room temperature to obtain the compound herbicide for rice.
Wherein, the carrier in the step A1 is filler, and the filler is diatomite.
Wherein the surfactant in the step A2 is sodium dodecyl benzene sulfonate, the dispersant is alkyl naphthalene sulfonate, the defoaming agent is an organic silicon defoaming agent, and the antifreeze agent is glycerol.
Wherein the vegetable oil in step A3 is corn oil.
The garlic extract liquid obtained in the step A1 is prepared by the following steps:
step S1, smashing garlic, adding the mashed garlic into a flask, adding distilled water, soaking for 35 minutes, heating and refluxing for 5 hours, centrifugally separating the extracting solution at 3200rpm for 15 minutes, and removing precipitates to obtain a mixed solution a;
and step S2, performing flash evaporation concentration on the mixed solution a prepared in the step S1 at 70 ℃ to 10% of the original volume, and cooling to room temperature to obtain garlic extract.
Wherein the using amount of the garlic in the step S1 is 20g, the using amount of the distilled water is 5 times of the mass of the garlic, and the heating temperature is 55 ℃.
Comparative example 1
Commercially available triclopyr herbicides.
Comparative example 2
The compound herbicide for rice of comparative example 2 is prepared by the following method:
step A1, weighing the following raw materials in percentage by weight: 20% of triclopyr, 20% of pyriminobac-methyl, 5% of potassium nitrate, 1% of surfactant, 1% of dispersant, 1% of defoamer, 1% of antifreeze agent, 15% of triethanolamine, 6% of vegetable oil and the balance of carrier;
step A2, mixing triclopyr, pyriminobac-methyl, potassium nitrate and a carrier weighed in the step A1, and performing ultrasonic dispersion for 65 minutes at the ultrasonic frequency of 85kHz to obtain a mixture a;
step A3, adding the surfactant, the dispersing agent, the defoaming agent and the antifreeze agent weighed in the step A1 into the mixture a prepared in the step A2, controlling the heating temperature to be 70 ℃, and mixing and reacting for 5 hours under the condition that the stirring speed is 300rpm to prepare a mixture b;
and step A4, mixing and stirring the triethanolamine and the vegetable oil weighed in the step A1 and the mixture b prepared in the step A3 at the speed of 280rpm for 1 hour, heating to 70 ℃, keeping the temperature, reacting for 8 hours, and cooling to room temperature to obtain the compound herbicide for rice.
Wherein, the carrier solvent in the step A1 is N, N-dimethylformamide.
Wherein the surfactant in the step A3 is sodium dodecyl benzene sulfonate, the dispersant is alkyl naphthalene sulfonate, the defoaming agent is an organic silicon defoaming agent, and the antifreeze agent is glycerol.
Wherein the vegetable oil in step A4 is corn oil.
The following performance tests are carried out on the examples 1-3 and the comparative examples 1 and 2, (1) the pesticide effect test is carried out, samples are accurately weighed according to the area of a test cell, a knapsack sprayer is utilized to carry out uniform spraying, a special fan-shaped spray head for herbicide is selected as the spray head, during spraying, the pesticide liquid is required to be uniformly sprayed into the test cell, the phenomena of missed spraying and multiple spraying are avoided, the weed death conditions are observed 20 days and 40 days after the pesticide is sprayed respectively after the test, and the weeding activities of various pesticides are compared; (2) the activity of the eggs of the paraplegia truncata is determined by placing 5 female adult mites of the initially hatched paraplegia truncata on rice leaf disks with the diameter of 1cm, removing the adult mites after laying eggs for 24h, leaving only 20 eggs, soaking the leaf disks in the herbicide of the examples and the comparative examples for 5s respectively, using distilled water as a control treatment, repeating each treatment for 5 times, observing and recording the survival and death conditions of the eggs after 10 days, and the test data are shown in table 1 and table 2:
TABLE 1
TABLE 2
| Example 1 | Example 2 | Example 3 | Comparative example 1 | Comparative example 2 | |
| Mortality of egg% | 78.2 | 76.5 | 77.8 | 26.3 | 36.5 |
As can be seen from table 1, compared with the comparative examples, the compound herbicide for rice prepared in examples 1 to 3 has a significant control effect, a significant synergistic effect and a long lasting period, and as can be seen from table 2, the ovicidal rate of the compound herbicide for rice prepared in examples 1 to 3 to the eggs of the house mites is kept at about 78%, which indicates that the compound herbicide for rice prepared in examples 1 to 3 has a certain insecticidal effect, is beneficial to the healthy growth of crops and has a wide application prospect.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (6)
1. A compound herbicide for rice based on triclopyr and pyriminobac-methyl is characterized by comprising the following components in percentage by weight: 1-60% of triclopyr, 1-30% of pyriminobac-methyl, 4-15% of garlic extract, 2-10% of potassium nitrate, 1-3% of surfactant, 1-3% of dispersant, 1-3% of defoamer, 1-3% of antifreeze agent, 5-20% of triethanolamine, 3-10% of vegetable oil and the balance of carrier;
a compound herbicide for rice based on triclopyr and pyriminobac-methyl is prepared by the following steps:
step A1, mixing triclopyr, pyriminobac-methyl, garlic extract, potassium nitrate and a carrier, and ultrasonically dispersing for 50-70 minutes at an ultrasonic frequency of 80-90kHz to prepare a mixture a;
step A2, adding a surfactant, a dispersant, a defoamer and an antifreeze into the mixture a prepared in the step A1, controlling the heating temperature to be 60-75 ℃, and mixing and reacting for 3-4 hours at the stirring speed of 250-280rpm to prepare a mixture b;
step A3, mixing and stirring triethanolamine, vegetable oil and the mixture b prepared in the step A2 at the speed of 260-280rpm for 0.5-1 hour, heating to 60-70 ℃, keeping the temperature for reaction for 5-7 hours, and cooling to room temperature to obtain the compound herbicide for rice.
2. The compound herbicide based on triclopyr and pyriminobac-methyl for rice as claimed in claim 1, wherein the herbicide comprises the following components in percentage by weight: the carrier in the step A1 is one of deionized water, a solvent or a filler, the solvent is one or more of N, N-dimethylformamide, cyclohexanone, toluene, ethanol, ethanolamine, propanol, butanol, ethylene glycol, butyl ether, ethyl acetate or acetonitrile, and the filler is one or more of diatomite, bentonite, white carbon black and light calcium carbonate, and is mixed according to any proportion.
3. The compound herbicide based on triclopyr and pyriminobac-methyl for rice as claimed in claim 1, wherein the herbicide comprises the following components in percentage by weight: the surfactant in the step A2 is one or more of sodium dodecyl benzene sulfonate, ethyl silicone oil and methyl hydrogen-containing silicone oil which are mixed according to any proportion, the dispersing agent is one or more of polyoxyethylene triphenylethylene phenyl phosphate, alkyl naphthalene sulfonate and alkylphenol polyoxyethylene ether which are mixed according to any proportion, the defoaming agent is an organic silicon defoaming agent, and the antifreeze agent is one or more of propylene glycol, glycerol and ethylene glycol which are mixed according to any proportion.
4. The compound herbicide based on triclopyr and pyriminobac-methyl for rice as claimed in claim 1, wherein the herbicide comprises the following components in percentage by weight: the vegetable oil in the step A3 is one or more of salad oil, soybean oil, castor oil, corn oil and olive oil, and is mixed according to any proportion.
5. The compound herbicide based on triclopyr and pyriminobac-methyl for rice as claimed in claim 1, wherein the herbicide comprises the following components in percentage by weight: the garlic extract liquid in the step A1 is prepared by the following steps:
step S1, smashing garlic, adding the mashed garlic into a flask, adding distilled water, soaking for 30-40 minutes, heating and refluxing for 4-5 hours, centrifugally separating the extracting solution at 3000-3200rpm for 10-15 minutes, and removing precipitates to obtain a mixed solution a;
and step S2, performing flash evaporation concentration on the mixed solution a prepared in the step S1 at the temperature of 60-70 ℃ to 5-10% of the original volume, and cooling to room temperature to obtain the garlic extract.
6. The compound herbicide based on triclopyr and pyriminobac-methyl for rice as claimed in claim 5, wherein the herbicide comprises the following components in percentage by weight: the usage amount of the garlic in the step S1 is 15-20g, the usage amount of the distilled water is 4-5 times of the mass of the garlic, and the heating temperature is 45-55 ℃.
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| CN113519516A (en) * | 2021-08-26 | 2021-10-22 | 安徽省圣丹生物化工有限公司 | Propanil emulsifiable concentrate herbicide and preparation method thereof |
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| CN113519516A (en) * | 2021-08-26 | 2021-10-22 | 安徽省圣丹生物化工有限公司 | Propanil emulsifiable concentrate herbicide and preparation method thereof |
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