CN115989814B - A kind of herbicidal composition containing pseudoquinine and saflufenacil and its application - Google Patents

Abstract

The invention provides a weeding composition containing sarmentine and saflufenacil and application thereof, wherein the weeding composition comprises the following components in percentage by weight (5-80): (1-10) sardine and saflufenacil. The weeding composition prepared by compounding the sarmentine and the saflufenacil can effectively prevent and remove various annual and perennial broadleaf weeds (including leguminous weeds and asteraceae) and gramineous weeds at one time, has a synergistic effect, has better pesticide effect than the single use of the sarmentine or the saflufenacil, can effectively slow down the generation of drug resistance of weeds, is environment-friendly, and has good control effect.

Description

A kind of herbicidal composition containing pseudoquinine and saflufenacil and its application

Technical field

The present invention relates to the field of pesticides, and in particular to a herbicidal composition containing pseudoquinine and saflufenacil and its application.

Background technique

Weeds compete with crops for nutrients, water and light, affecting crop production and, if not controlled, leading to reduced crop yields. Currently, agricultural weed control usually uses chemical agents. Chemical herbicide control has become the most reliable and cheapest method of controlling weeds in crop production. However, with the widespread use of various herbicides, the long-term unreasonable use of a single chemical herbicide has resulted in weed resistance and tolerance. The increase in the level of medicinal properties reduces the weeding range, shortens the action time, and weakens the herbicidal effect.

Pseudoquinine is a broad-spectrum, contact herbicide that interferes with photosynthesis by competing for the binding site of plastoquinone and inhibiting photosystem II (PSII), and by inhibiting the activity of enoyl ACP reductase (ENR). to interfere with fatty acid synthesis, thereby causing the plant to lose plasma membrane integrity, ultimately leading to plant death. Pseudospinine can control annual or perennial dicotyledonous and gramineous weeds, such as wild mustard, downy leaf, red root amaranth, purslane, dandelion, spurge, chickweed, white clover, bluegrass, and creeping wheatgrass. , sage, wheatgrass, crabgrass, barnyardgrass, wild barley, flowering ryegrass, setaria, golden setaria, wild wheat, wild corn, duckweed, bentgrass, fescue, downgrass, ryegrass, Paspalum bitachyon, Phragmites australis, Poa annua, Rubus sibirica, Sophora sibirica, Bermudagrass, etc., but its control effect on Cyperaceae drug-resistant weeds such as Cyperus rotundus is poor.

Saflufenacil is a biocidal herbicide and an inhibitor of protoporphyrinogen oxidase. It can be absorbed by the roots and seedling tissues of plants. After the plant absorbs the agent, the chloroplast pigments turn white, the tissue becomes necrotic, and ultimately the growth is inhibited until Plants die. Saflufenacil has excellent activity and very low dosage. It can control more than 90 kinds of broadleaf weeds, including some weeds that are resistant to triazines, glyphosate and acetolactate synthase inhibitors, such as crabgrass, Amaranthus, amaranth, Russian thistle, amaranth retroflexus, ragweed, cocklebur, nightshade, polygonum, pigweed, small fly, etc., are called "the most successful new herbicides developed in more than 20 years" by BASF.

At present, there are no reports or records on the synergistic effect of the combination of pseudine and saflufenacil on controlling weeds.

Contents of the invention

In view of this, the object of the present invention is to propose a herbicidal composition containing pseudoquinine and saflufenacil and its application,

The technical solution of the present invention is implemented as follows:

First, the present invention provides a herbicidal composition containing pseudoflufenine and saflufenacil, including a weight ratio of pseudofenfenine and saflufenacil in a weight ratio of (5 to 80): (1 to 10).

Further, it includes pseudomine base and saflufenacil in a weight ratio of (5-80): (1-5).

Furthermore, it includes pseudosulfate base and saflufenacil in a weight ratio (5-80): 1.

More specifically, it includes pseudosulfenine and saflufenacil in a weight ratio of 2:1.

Secondly, the present invention provides a herbicide using the above-mentioned herbicidal composition, and the addition amount of the herbicidal composition accounts for 10-85% of the weight of the herbicide.

Further, the dosage forms of the herbicide include wettable powder, granules, water-dispersible granules, granules, oil suspensions, water suspensions, dry suspensions, dispersible oil suspensions, and soluble liquids.

Furthermore, the wettable powder includes the following mass percentage components: 20-85% of the herbicidal composition, 1-3% of wetting agent, 3-10% of dispersant, 0.1-1% of defoaming agent and The remaining carrier; the processing method of the wettable powder includes: mixing the herbicidal composition, wetting agent, dispersant, defoaming agent and carrier, pulverizing with ultra-fine airflow, passing through a 300-350 mesh sieve, and obtaining wet powder;

In the wettable powder, the wetting agent includes but is not limited to sodium dodecyl benzene sulfonate, sodium petroleum sulfonate, sodium lauryl sulfate, mixed alcohol polyoxyethylene ether, soapberry powder, One or more of saponin powder, sodium lauryl sulfate, peeling powder, and low-viscosity methylcellulose;

The dispersants include but are not limited to arylphenol polyoxyethylene succinate sulfonate, fatty alcohol polyoxyethylene ether, alkylphenol polyoxyethylene ether formaldehyde condensate sulfate, fatty amine polyoxyethylene ether , Calcium alkyl benzene sulfonate, alkyl naphthalene sulfonate, fatty acid polyoxyethylene ether, lignosulfonate, alkylaryl polyoxyethylene ether, sodium methylnaphthalene sulfonate formaldehyde condensate, octylphenol One or more of polyoxyethylene ether sulfate, sodium methylene bisnaphthalene sulfonate, naphthalene sulfonate formaldehyde condensate, polycarboxylate, alkylphenol polyoxyethylene ether, and ester polyoxyethylene ether;

The defoaming agent includes but is not limited to one of emulsified silicone oil, high carbon alcohols, capric acid, silicone defoaming agent, tributyl phosphate, silicones, polyethers, and polysiloxanes. or several;

The carrier includes but is not limited to one or more of kaolin, white carbon black, bentonite, clay, diatomaceous earth, activated clay, attapulgite or light calcium carbonate.

The oil suspension agent includes the following mass percentage components: 10-85% of the herbicidal composition, 5-20% emulsifier, 1-2% wetting agent, 1-5% dispersant, and 0.5-3 stabilizer %, defoaming agent 0.1-0.5% and the balance solvent; the processing method of the oil suspension agent includes: combining the herbicidal composition, emulsifier, wetting agent, dispersant, stabilizer, defoaming agent and solvent Mix, grind with a sand mill, and filter to obtain an oil suspension;

In the oil suspension agent, the emulsifiers include but are not limited to nonylphenol polyoxyethylene ether phosphate sodium salt, Tween series, Span series, PO-EO block polyether, castor oil phosphate series, agricultural milk No. 600, Nongru No. 700, calcium dodecyl benzene sulfonate, sodium dodecyl benzene sulfonate, nonylphenol polyoxyethylene ether sulfate triethanol ammonium salt, nonylphenol polyoxyethylene ether phosphate, nonylphenol polyoxyethylene ether phosphate One or more of the phenol polyoxyethylene ether, alkyl phenol polyether, alkyl phenol polyoxyethylene ether, and Ningru series;

Described wetting agents include but are not limited to fatty alcohol sulfates, alkyl aryl sulfonates, alkyl phenol polyoxyethylene ethers, alkyl sulfates, olefin sulfonates, succinic acid monoester sulfonates, fatty Alcohol polyoxyethylene ether sulfates, dodecyl sulfonates, butyl oleate sulfate compounds, fatty alcohol polyoxyethylene ethers, PO-EO block polyethers, EO-PO block copolymers, alkylphenols One or more of polyoxyethylene ether sulfate, silicone additives or fluorine-containing additives;

The dispersants include but are not limited to alkenyl sulfonates, succinate ester sulfonates, fatty amide alkyl sulfonates, polycarboxylates, petroleum sulfonates, alkyl benzene sulfonates Salts, alkyl sulfonates, alkyl naphthalene sulfonates, higher fatty acid ester sulfonates, phosphate ester salts, EO-PO block copolymers, polyoxyethylene ether phosphate esters, fatty acyl One or more of oxyethyl sulfonates, lignosulfonates, sulfate ester salts, polyol glycerides or alkyl glycosides;

The stabilizer includes but is not limited to one of organic acids, organic bentonite, tall oil, attapulgite, alcohols, antioxidants, organic bases, esters, silica, epichlorohydrin or urea or several;

The defoaming agent includes, but is not limited to, one or more of decanoic acid, emulsified silicone oil, organosilicon defoaming agents, and silicones;

The solvent includes but is not limited to one or more of methyl oleate, soybean oil, camellia oil, rapeseed oil, corn oil, vegetable oil esters or mineral oil.

The water-dispersible granules include the following mass percentage components: 10-85% of the herbicidal composition, 1-3% of wetting agents, 3-10% of dispersants, 1-15% of disintegrants, and binders. 0-2%, defoaming agent 0.1-1% and the balance carrier; the processing method of the water-dispersible granules includes: mixing the herbicidal composition, wetting agent, dispersant, disintegrant and carrier evenly , crushed by airflow, then add binder and defoaming agent, mix well, add water and mix well, knead, granulate, dry and sieve to obtain water-dispersible granules;

In the water-dispersible granules, the wetting agents include but are not limited to sodium lauryl sulfate, sodium dodecyl benzene sulfonate, sodium petroleum sulfonate, mixed alcohol polyoxyethylene ether, saponin powder, tea cumin , silkworm excrement, sodium lauryl sulfate, low viscosity methylcellulose, ziplock powder, soapberry powder, one or more;

The dispersants include but are not limited to bis(alkyl)naphthalene sulfonate formaldehyde condensate, alkylphenol polyoxyethylene ether formaldehyde condensate sulfate, sodium methylnaphthalene sulfonate formaldehyde condensate, alkyl benzene sulfonate calcium Salt, lignosulfonate, sodium methylene bisnaphthalene sulfonate, octylphenol polyoxyethylene ether sulfate, naphthalene sulfonate formaldehyde condensate, alkylaryl polyoxyethylene ether, fatty alcohol polyoxyethylene ether, fatty amine polyoxyethylene ether, arylphenol polyoxyethylene succinate sulfonate, alkyl naphthalene sulfonate, polycarboxylate, alkylphenol polyoxyethylene ether, fatty acid polyoxyethylene ether, One or more of the ester polyoxyethylene ethers;

The binder includes but is not limited to one or more of methylcellulose, vinylpyrrolidone, polyvinyl alcohol, sucrose, starch or soluble starch;

The disintegrating agent includes but is not limited to one or more of sodium carbonate, sodium bicarbonate, ammonium sulfate, sodium carboxymethyl cellulose, glucose, urea or aluminum chloride;

The defoaming agent includes but is not limited to one of polyethers, polysiloxanes, silicones, silicone defoaming agents, high carbon alcohols, capric acid, emulsified silicone oil, and tributyl phosphate. or several;

The carrier includes but is not limited to one or more of clay, diatomaceous earth, attapulgite, kaolin, bentonite, white carbon black, activated clay or light calcium carbonate.

The water suspension agent includes the following mass percentage components: 10-85% of the herbicidal composition, 1-2% wetting agent, 1-5% dispersant, 5-10% antifreeze agent, and 0.1 thickener -0.5%, preservative 0.1-0.5%, defoaming agent 0.1-0.5% and the balance water; the processing method of the water suspension agent includes: combining the herbicidal composition, wetting agent, dispersant, antifreeze Agent, thickener, preservative, defoaming agent and water are mixed, sanded and filtered to obtain a water suspension.

In the water suspension agent, the wetting agent includes but is not limited to alkyl sulfate, succinic acid monoester sulfonate, alkyl benzene sulfonate, olefin sulfonate, fatty alcohol polyoxyethylene ether sulfate , Dodecyl sulfonates, alkylphenol polyoxyethylene ethers, fatty alcohol polyoxyethylene ethers, PO-EO block polyethers, alkylphenol polyoxyethylene ether sulfates, butyl oleate sulfate compounds, One or more of EO-PO block copolymer, silicone additives or fluorine-containing additives;

The dispersants include but are not limited to alkyl benzene sulfonates, higher fatty acid ester sulfonates, fatty amide alkyl sulfonates, polycarboxylates, alkyl sulfonates, alkenyl sulfonates, etc. Sulfonates, alkylnaphthalene sulfonates, lignosulfonates, fatty acyloxyethyl sulfonates, petroleum sulfonates, sulfate ester salts, phosphate ester salts, succinate sulfonates One or more of acid salts, EO-PO block copolymers, polyoxyethylene ether phosphates, polyol glycerides or alkyl glycosides.

The antifreeze agent includes, but is not limited to, one or more of glycerol, ethylene glycol, propylene glycol, and isopropyl alcohol;

The preservatives include but are not limited to one or more of sodium benzoate, potassium sorbate, formaldehyde, and isothiazolinones;

The defoaming agent includes but is not limited to one of silicone oil, silicones, polyethers, polysiloxanes, high-carbon alcohols, organosilicon defoaming agents, capric acid, tributyl phosphate, or Several kinds;

Described thickeners include but are not limited to xanthan gum, aluminum magnesium silicate, modified bentonite, alginate, carboxymethyl cellulose, hydroxypropyl cellulose, sodium polyacrylate, polyacrylic acid amine or polyvinylpyrrolidone one or more of them.

Thirdly, the present invention provides an application of the above-mentioned herbicidal composition or the above-mentioned herbicide in controlling weeds, and the weeds include legume weeds and/or Asteraceae weeds and/or grass weeds. Grass.

Further, the leguminous weeds include Cassia; the asteraceae weeds include Phytophthora minor.

Further, the gramineous weeds include barnyardgrass and crabgrass.

Compared with the prior art, the beneficial effects of the present invention are:

The present invention selects a herbicidal composition compounded of pseudine and saflufenacil, which can effectively control a variety of annual and perennial broad-leaf (including Leguminosae and Asteraceae) and grass weeds at one time; The herbicidal composition containing pseudoflufenine and saflufenacil has a synergistic effect and is more effective than pseudoflufenine or saflufenacil when used alone, thereby reducing the dosage and reducing the impact on the environment and soil. of pollution. The herbicidal composition expands the herbicidal spectrum and can be used to control leguminous, asteraceous and gramineous weeds, and prolongs the service life of pseudofine and saflufenacil, so that the drug effect lasts long and can effectively Slows down the development of weed resistance, is green and environmentally friendly, and has excellent control effects.

Detailed ways

In order to better understand the technical content of the present invention, specific examples are provided below to further illustrate the present invention.

Unless otherwise specified, the experimental methods used in the examples of the present invention are conventional methods.

Materials, reagents, etc. used in the embodiments of the present invention can be obtained from commercial sources unless otherwise specified.

Example 1 - Water dispersible granule herbicide

A water-dispersible granule containing pseudoquinine and saflufenacil, with the following mass percentage components:

Pseudoquinine 40%, saflufenacil 4%, sodium lauryl sulfate 3%, naphthalene sulfonic acid formaldehyde condensate 7%, sodium bicarbonate 5%, methylcellulose 1%, polyether disinfectant 0.2% foaming agent, add kaolin until the content of water-dispersible granules reaches 100%;

The preparation method is: according to the above formula, pulverize pseudoquinine, saflufenacil, sodium lauryl sulfate, naphthalene sulfonate formaldehyde condensate, sodium bicarbonate and kaolin through airflow, and then add methylcellulose and Polyether defoaming agent, mix well, add a small amount of water, mix well, knead, and then enter the extrusion granulator for granulation. The granulated product is dried in a boiling dryer, screened, and then sampled and analyzed to obtain water dispersion. Granules.

Example 2 - Water dispersible granule herbicide

A water-dispersible granule containing pseudoquinine and saflufenacil, with the following mass percentage components:

Pseudoquinine 25%, saflufenacil 1%, sodium lauryl sulfate 3%, naphthalene sulfonic acid formaldehyde condensate 6%, sodium carbonate 5%, methylcellulose 1%, silicone defoaming agent 0.3 %, add kaolin until the water-dispersible granule component content reaches 100%;

The preparation method is: according to the above formula, pulverize pseudoquinine, saflufenacil, sodium lauryl sulfate, naphthalene sulfonate formaldehyde condensate, sodium carbonate and kaolin through airflow, and then add methylcellulose and organic silicon. Defoaming agent, mix well, add a small amount of water to mix well, knead, and then enter the extrusion granulator for granulation. The granulated product is dried in a boiling dryer, sieved, and sampled and analyzed to obtain water-dispersible granules.

Example 3 - Water dispersible granule herbicide

A water-dispersible granule containing pseudoquinine and saflufenacil, with the following mass percentage components:

Pseudoquinine 50%, saflufenacil 3%, sodium dodecylbenzenesulfonate 2%, naphthalenesulfonic acid formaldehyde condensate 7%, sodium bicarbonate 5%, methylcellulose 1%, high carbon Alcohol defoamer 0.3%, add light calcium carbonate until the content of water-dispersible granules reaches 100%;

The preparation method is as follows: according to the above formula, pseudoquinine base, saflufenacil, sodium dodecyl benzene sulfonate, naphthalene sulfonate formaldehyde condensate, sodium bicarbonate and light calcium carbonate are pulverized by air flow, and then added Methyl cellulose and high-carbon alcohol defoaming agent are mixed, add a small amount of water to mix, knead, and then enter the extrusion granulator for granulation. The granulated product is dried by a boiling dryer, screened, and Water dispersible granules are obtained by sampling and analysis.

Example 4 - Water dispersible granule herbicide

A water-dispersible granule containing pseudoquinine and saflufenacil, with the following mass percentage components:

Pseudomonasine 50%, saflufenacil 4%, mixed alcohol polyoxyethylene ether 2%, lignosulfonate 7%, ammonium sulfate 5%, soluble starch 1%, polyether defoaming agent 0.2% , add bentonite until the water-dispersible granule component content reaches 100%;

The preparation method is: according to the above formula, pulverize pseudoquinine base, saflufenacil, mixed alcohol polyoxyethylene ether, lignin sulfonate, ammonium sulfate and bentonite through airflow, and then add soluble starch and polyether pesticides. Foaming agent, mix well, add a small amount of water to mix well, knead, and then enter the extrusion granulator for granulation. The granulated product is dried in a boiling dryer, sieved, and sampled and analyzed to obtain water-dispersible granules.

Example 5 - Wettable Powder Herbicide

A wettable powder containing pseudoquinine and saflufenacil, with the following mass percentage components:

Pseudopyralid 30%, saflufenacil 1%, low viscosity methyl cellulose 2%, fatty amine polyoxyethylene ether 7%, silicone defoamer 0.2%, add kaolin to wettable powder component content up to 100%

The preparation method is: according to the above formula, mix pseudoquinine base, saflufenacil, low viscosity methylcellulose, fatty amine polyoxyethylene ether, silicone defoaming agent and kaolin, and grind them through an ultra-micro airflow pulverizer. Crush, pass through a 325-mesh sieve, and mix evenly to obtain wettable powder.

Example 6 - Wettable Powder Herbicide

A wettable powder containing pseudoquinine and saflufenacil, with the following mass percentage components:

Pseudomonasine 60%, saflufenacil 3%, sodium dodecyl benzene sulfonate 2%, fatty amine polyoxyethylene ether 7%, silicone defoaming agent 0.2%, add diatomaceous earth until it can Wet powder ingredient content reaches 100%

The preparation method is: according to the above formula, mix pseudoquinine base, saflufenacil, sodium dodecyl benzene sulfonate, fatty amine polyoxyethylene ether, silicone defoaming agent and diatomaceous earth, and then Crush it with a micro-jet mill, pass it through a 325-meter sieve, and mix it evenly to obtain a wettable powder.

Example 7 - Wettable powder herbicide

A wettable powder containing pseudoquinine and saflufenacil, with the following mass percentage components:

Pseudomonasine 75%, saflufenacil 5%, alkyl sulfate 2%, naphthalene sulfonate formaldehyde condensate 7%, polysiloxane defoaming agent 0.2%, add light calcium carbonate to wettability Powder component content reaches 100%

The preparation method is: according to the above formula, mix pseudoquinine base, saflufenacil, alkyl sulfate, naphthalene sulfonate formaldehyde condensate, polysiloxane defoaming agent and light calcium carbonate, and then use ultra-micron Crush it with an airflow pulverizer, pass it through a 325-meter sieve, and mix it evenly to obtain wettable powder.

Example 8 - Aqueous Suspension Herbicide

An aqueous suspension containing pseudoquinine and saflufenacil, with the following mass percentage components:

Pseudomonasine 35%, saflufenacil 1%, sodium lauryl sulfate 2%, polycarboxylates 7%, high-carbon alcohol defoaming agent 0.2%, potassium sorbate 0.5%, propylene glycol 5%, Xanthan gum 0.4%, add water until the water suspension component reaches 100%

The preparation method is: according to the above formula, mix pseudoquinine, saflufenacil, sodium lauryl sulfate, polycarboxylates, high-carbon alcohol defoamer, potassium sorbate, propylene glycol, xanthan gum and water. Evenly, grind with a sand mill and filter to obtain a water suspension.

Example 9 - Aqueous Suspension Herbicide

An aqueous suspension containing pseudoquinine and saflufenacil, with the following mass percentage components:

Pseudoquinine base 70%, saflufenacil 3%, PO-EO block polyether 2%, alkyl benzene sulfonate 6%, polysiloxane defoaming agent 0.5%, sodium benzoate 0.5% , ethylene glycol 5%, magnesium aluminum silicate 0.5%, add water until the water suspension component content reaches 100%

The preparation method is: according to the above formula, combine pseudoquinine base, saflufenacil, PO-EO block polyether, alkyl benzene sulfonate, polysiloxane defoaming agent, sodium benzoate, and ethylene glycol. , aluminum magnesium silicate and water are mixed evenly, sanded with a sand mill and filtered to obtain a water suspension.

Example 10 - Oil Suspension Herbicide

An oil suspension containing pseudoquinine and saflufenacil, with the following mass percentage components:

Pseudoquinine base 35%, saflufenacil 2%, PO-EO block copolymer 2%, nonylphenol polyoxyethylene ether phosphate sodium salt 8%, alkyl benzene sulfonate 3%, organic Bentonite 2%, capric acid 0.2%, add methyl oleate until the oil suspension component content reaches 100%

The preparation method is: according to the above formula, combine pseudoquinine base, saflufenacil, PO-EO block copolymer, nonylphenol polyoxyethylene ether phosphate sodium salt, alkyl benzene sulfonates, organic bentonite, Mix capric acid and methyl oleate evenly, grind with a sand mill, and filter to obtain an oil suspension.

Verification test example 1-Pseudomonasine and saflufenacil combined indoor toxicity test

(1) Target weeds: Echinochloa crusgalli (L.) Beauv, Cassiatora Linn.

(2) Test method: The test uses the indoor potting method. Barnyard grass and cassia seeds are sown on-demand in flower pots filled with 3/5 moist nutrient soil. 6×6 seeds are sown in each pot. After sowing, the soil is covered to the top of the flower pot. 3/4 point. Spray treatment on stems and leaves at the 3-4 leaf stage of Cassia and the 2-3 leaf stage of Barnyard grass; 3 treatments were set up for Pseudomonas alkali, and the dosage of active ingredients were 400, 800 and 1600 g/ha respectively, and each treatment was repeated 4 times; benzene There are 3 treatments for saflufenacil, and the active ingredient dosages are 20, 40, and 80 grams/hectare respectively, and each treatment is repeated 4 times; there are 9 treatments for the mixed composition of saflufenacil + saflufenacil, and the active ingredients are The dosages are 400+20, 400+40, 400+80, 800+20, 800+40, 800+80, 1600+20, 1600+40, 1600+80 g/ha, and each treatment is repeated 4 times; and set The treatment without chemicals served as a control. After treatment, the plants were placed in a greenhouse for cultivation, and the growth was observed regularly. After 15 days, the fresh weight of the above-ground parts was measured, and the toxic effect of the pesticide on the target weeds was evaluated by the fresh weight inhibition rate (%).

(3) The joint effect evaluation method is as follows:

The joint effect of herbicides is evaluated according to the Gowing method, and the formula is as follows:

E ₀ =X+Y-XY/100;

In the formula,

Y is the fresh weight inhibition rate of herbicide B (saflufenacil) on target weeds at a certain dose;

E ₀ is the theoretical value of the fresh weight inhibition rate of target weeds after a single dose of pseudoflufenine and saflufenacil. E is the theoretical value of the fresh weight inhibition rate of target weeds after a single dose of pseudoflufenine and saflufenacil Measured values of re-inhibition rates.

(4) The evaluation criteria are as follows:

When EE ₀ >10%, it is expressed as a synergistic effect;

When -10%≤EE ₀ ≤10%, it is expressed as additive effect;

Antagonism is indicated when EE ₀ <-10%.

The above experimental results are as follows in Table 1 and Table 2 respectively:

Table 1 The results of the joint toxicity determination of pseudoquinine, saflufenacil and their mixtures to barnyardgrass

Table 2 The results of joint toxicity determination of pseudoquinine, saflufenacil and their mixed combinations

The results in Table 1 and Table 2 show that pseudoquinine and saflufenacil are 400+20, 400+40, 400+80, 800+20, 800+40, 800+80, 1600+20, 1600+ 40. The actual control effect of 1600+80 mixture on sunflower and barnyard grass is higher than the expected theoretical control effect of its mixed use. That is to say, the weight ratio of pseudoquinine base and saflufenacil is 10:1 to 80: 1 hour has obvious synergistic effect.

Verification test example 2-field efficacy test

(1) Test reagents: Example 1, Example 2, Example 3, Example 4, Example 5, Example 6, Example 7, Example 8, Example 9, Example 10, a total of 10 types Compound composition.

(2) Comparative drugs: Pseudomonasine wettable powder, saflufenacil wettable powder.

(3) Control targets: common weeds that occur in the field, Cassia toraLinn, Conyzacanadensis (L.) Cronq., Echinochloa crusgalli (L.) Beauv, Digitaria sanguinalis (L. .)Scop.).

(4) Application method: The efficacy test was conducted in a field with a relatively high density of weeds. At the 3 to 4 leaf stage of the weeds, spray the stems and leaves with water evenly.

(5) Experimental adjustment: before spraying, count the number of four weeds: Cassia cassia, small flying canopy, barnyardgrass, and crabgrass. Count the number of the above four weeds 14 days after spraying. The prevention effect is calculated according to the following formula:

(6) Control effect (%) = 1 - (number of weeds after application ÷ number of weeds before application) × 100%.

The above experimental results are as follows in Table 3:

Table 3. Field control effects of pseudocosine, saflufenacil and their compound combinations on weeds in non-arable land

Field test results: Different ratios of the compound preparations of pyralidin and saflufenacil have significant control effects on non-cultivated broadleaf weeds and grass weeds, which are significantly better than the two single agents. The minimum control effects of the 10 compound formulations on Cassia, Erigeron, Echinochloa, and Digitaria reached 92.55%, 92.19%, 88.51%, and 86.16%, and the highest control effects reached 100%, 100%, 99.11%, and 98.92%, with obvious synergistic effects. After mixing the two agents, the problems of malignant weeds in the field, such as Cassia, Erigeron, Echinochloa, and Digitaria, were solved. After observation, all treatments were safe and efficient.

To sum up, the combination of the present invention is reasonable and the control effect is better than that of each component used alone. It has the characteristics of extending the service life of each herbicide component, expanding the herbicidal spectrum, and having a long duration of efficacy. It is also safe for crops and complies with the policy guidelines for efficient, safe, and highly selective pesticide application.

The above descriptions are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the present invention. within the scope of protection.

Claims (10)

1. A herbicidal composition containing pseudoquinine base and saflufenacil, which is characterized in that it includes pseudoquinine base and saflufenacil in a weight ratio of (5 to 80): (1 to 10). 2. A kind of herbicidal composition containing pseudoflufenine and saflufenacil according to claim 1, characterized in that it includes pseudoflufenine and benzene in a weight ratio of (5 to 80): (1 to 5). saflufenac. 3. A kind of herbicidal composition containing pseudofine base and saflufenacil according to claim 2, characterized in that it includes pseudofine base and saflufenacil in a weight ratio (5-80): 1 . 4. A herbicidal composition containing styraclonitrile and saflufenacil according to claim 3, characterized in that it comprises styraclonitrile and saflufenacil in a weight ratio of 2:1. 5. A herbicide using the herbicidal composition according to any one of claims 1 to 4, characterized in that the addition amount of the herbicidal composition accounts for 10-85% of the weight of the herbicide. 6. The herbicide according to claim 5, characterized in that the dosage form of the herbicide includes wettable powder, granule, water-dispersible granule, oil suspension, water suspension, dry suspension, dispersible oil Suspension agent, soluble liquid agent. 7. The herbicide according to claim 6, characterized in that the wettable powder includes the following mass percentage components: 20-85% of the herbicidal composition, 1-3% of wetting agent, 3% of dispersing agent -10%, defoaming agent 0.1-1% and the remaining carrier; the processing method of the wettable powder includes: mixing the herbicidal composition, wetting agent, dispersing agent, defoaming agent and carrier, ultrafine Pulverize by airflow and pass through a 300-350 mesh sieve to obtain wettable powder; The oil suspension agent includes the following mass percentage components: 10-85% of the herbicidal composition, 5-20% emulsifier, 1-2% wetting agent, 1-5% dispersant, and 0.5-3 stabilizer %, defoaming agent 0.1-0.5% and the remaining solvent; the processing method of the oil suspension agent includes: combining the herbicidal composition, emulsifier, wetting agent, dispersant, stabilizer, defoaming agent and solvent Mix, grind with a sand mill, and filter to obtain an oil suspension; The water-dispersible granules include the following mass percentage components: 10-85% of the herbicidal composition, 1-3% wetting agent, 3-10% dispersing agent, 1-15% disintegrating agent, and binder 0-2%, defoaming agent 0.1-1% and the balance carrier; the processing method of the water-dispersible granules includes: mixing the herbicidal composition, wetting agent, dispersant, disintegrant and carrier evenly , crushed by airflow, then add binder and defoaming agent, mix well, add water and mix well, knead, granulate, dry and sieve to obtain water-dispersible granules; The water suspension agent includes the following mass percentage components: 10-85% of the herbicidal composition, 1-2% wetting agent, 1-5% dispersant, 5-10% antifreeze agent, and 0.1 thickener -0.5%, preservative 0.1-0.5%, defoaming agent 0.1-0.5% and the balance water; the processing method of the water suspension agent includes: combining the herbicidal composition, wetting agent, dispersant, antifreeze Agent, thickener, preservative, defoaming agent and water are mixed, sanded and filtered to obtain a water suspension. 8. An application of the herbicidal composition as claimed in any one of claims 1 to 4 or the application of the herbicide as described in any one of claims 5 to 7 in controlling weeds, characterized in that the weed Grasses include leguminous weeds and/or asteraceae weeds and/or grassy weeds. 9 . The use according to claim 8 , wherein the Leguminosae weeds include Cassia tora and the Asteraceae weeds include Erigeron candidum. 10. The application according to claim 8, characterized in that the gramineous weeds include barnyardgrass and crabgrass.