A ternary compound herbicide and its preparation method and application

Abstract

The present invention provides a ternary compound herbicide and its preparation method and application, relate to the field of agricultural science and technology, the ternary compound herbicide provided by the present invention, is composed of specific high-efficiency flupyralid, 2,4-drop butyrate sodium salt and fluazifop-butyl. Through the inventor's research, it is found that the three are combined, not only the weed killing spectrum is expanded, and its mechanism of action is different, and the synergistic effect of co-application is significant. Through experimental observation, the contact effect of fluazifop-butyl, for high-efficiency flupyralid, 2,4-drop butyrate sodium salt enters weeds and opens up a channel, improves the absorption and utilization rate of medicament, is the main reason for its synergistic effect. And the three have soil sealing effect, compared with the existing application agents such as glyphosate, not only have higher prevention effect to unearthed weeds, also have certain sealing effect to unearthed weeds.

Description

Technical Field

[0001] The present invention relates to the field of agricultural science and technology, and in particular to a ternary compound herbicide and a preparation method and application thereof. Background Art

[0002] Blueberries, known as the king of berries, are a pillar industry in some areas. Weeds are not only a major factor affecting yield but also a major cause of declining quality, increasing the risk of pests and diseases. Currently, there are no registered herbicides for blueberry orchards. In production, weed control is often achieved by covering with weed cloth or using non-arable herbicides such as glyphosate and glufosinate. However, the drawbacks of glyphosate use in tea plantations are becoming increasingly prominent, and it has been banned in some areas.

[0003] In view of this, the present invention is proposed. Summary of the Invention

[0004] One of the purposes of the present invention is to provide a ternary compound herbicide to solve at least one of the technical problems existing in the prior art.

[0005] A second object of the present invention is to provide a method for preparing the above-mentioned ternary compound herbicide.

[0006] The third object of the present invention is to provide the application of the above-mentioned ternary compound herbicide.

[0007] In order to achieve the above-mentioned purpose of the present invention, the following technical solutions are adopted:

[0008] The invention provides a ternary compound herbicide, which consists of high-efficiency fluazifop-ethyl, 2,4-D butyrate sodium salt and fluazifop-butyl.

[0009] Furthermore, the mass ratio of the high-efficiency fluazifop-p-ethyl, 2,4-D butyrate sodium salt and fluazifop-propyl is in the range of 20-30:100-300:8-12.

[0010] Furthermore, the mass ratio of the high-efficiency fluazifop-p-ethyl, 2,4-D butyrate sodium salt and fluazifop-propyl is 20:300:12.

[0011] Furthermore, the formulation of the ternary compound herbicide includes a suspoemulsion.

[0012] Furthermore, the suspoemulsion comprises, based on 100 parts by weight, 2 parts of fluazifop-ethyl, 30 parts of 2,4-D butyrate sodium salt, 1.2 parts of fluazifop-propyl, 8 to 15 parts of emulsifier, 0.5 to 2.5 parts of dispersant, 0.5 to 2.5 parts of suspending agent and the balance of water.

[0013] The present invention also provides a method for preparing the above-mentioned ternary compound herbicide, which comprises taking high-efficiency fluazifop-butyl, 2,4-D butyrate sodium salt, fluazifop-butyl and an adjuvant in a formula ratio, and preparing the ternary compound herbicide.

[0014] The present invention also provides the use of the above-mentioned ternary compound herbicide in weed control in blueberry gardens, soybean fields and non-cultivated land.

[0015] Preferably, the application rate of the ternary compound herbicide in soybean fields is 796.8 to 1095.6 g a.i. / hm2. 2 .

[0016] Preferably, the application rate of the ternary compound herbicide in the blueberry garden is 996.0 to 1394.4 g a.i. / hm 2 .

[0017] Preferably, the application rate of the ternary compound herbicide on non-cultivated land is 1095.6-1494.0 g a.i. / hm 2 .

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The ternary compound herbicide provided by the present invention is composed of high-efficiency fluazifop-butyl, 2,4-D sodium butyrate and fluazifop-butyl. The inventors have found that the combination of the three not only expands the weed control spectrum, but also has different mechanisms of action, and the synergistic effect of combined application is significant. Through experimental observation, the contact effect of fluazifop-butyl opens a channel for high-efficiency fluazifop-butyl and 2,4-D sodium butyrate to enter the weeds, improves the absorption and utilization rate of the agent, and is the main reason for its synergy. And the three have a soil sealing effect. Compared with existing application agents such as glyphosate, they not only have a higher prevention effect on unearthed weeds, but also have a certain sealing effect on unearthed weeds. DETAILED DESCRIPTION

[0020] Unless otherwise defined herein, scientific and technical terms used in conjunction with the present invention shall have the meanings commonly understood by those of ordinary skill in the art. The meaning and scope of the terms should be clear; however, in the event of any potential ambiguity, the definitions provided herein take precedence over any dictionary or external definitions. In this application, the use of "or" means "and / or" unless otherwise stated. In addition, the use of the term "including" and other forms is non-limiting.

[0021] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] The harm caused by weeds to crops in my country is far greater than that caused by other aspects of plant protection (pests and diseases). Based on the characteristics of weed damage, we screened the combination of high-efficiency flupyralid, 2,4-D butyrate sodium salt, and fluazifop-butyl to explore the rationality of their combination. Field application trials were conducted in blueberry orchards, non-arable land, and soybean fields, and the following technical solutions were proposed:

[0023] According to one aspect of the present invention, a ternary compound herbicide is provided, wherein the ternary compound herbicide consists of high-efficiency fluazifop-ethyl, 2,4-D butyrate sodium salt and fluazifop-butyl.

[0024] Among them, the highly effective halpyrazole has a strong transmission effect. After being absorbed by the leaves, it is transmitted throughout the plant, inhibiting the growth of the plant's meristem and thus killing weeds. The application period is long, and it has a strong control effect on annual and perennial grass weeds from seedling emergence to the early stages of tillering and heading.

[0025] 2.4 drops of sodium butyrate have good broad-spectrum and systemic properties. They are hormone-type herbicides. After weeds absorb them, they cause cell division, abnormal growth, and blocked nutrient transfer, leading to death.

[0026] Flumioxazin, a phthalimide herbicide, is a protoporphyrinogen oxidase inhibitor and a contact-selective herbicide. It acts rapidly on the leaves of sensitive weeds, causing protoporphyrin accumulation and enhancing lipid peroxidation in cell membranes, leading to irreversible damage to the cell membrane structure and function of sensitive weeds.

[0027] The combination of these three agents not only expands the weed control spectrum, but also offers significant synergy when applied together, thanks to their distinct mechanisms of action. Experimental observations have shown that the contact action of fluazifop-butyl and 2,4-D butyrate sodium salt opens a pathway for the highly effective fluazifop-butyl and 2,4-D butyrate sodium salt to reach weeds, improving their absorption and utilization, which is the primary reason for their enhanced effectiveness. Furthermore, these three agents have a soil-sealing effect. Compared to existing agents like glyphosate, they offer greater control effectiveness not only against emerged weeds but also provide a certain sealing effect on unemerged weeds.

[0028] In an optional embodiment, the mass ratio of the high-efficiency flupyralid, 2,4-D butyrate sodium salt and fluazifop-butyl is (20-30):(100-300):(8-12), for example, it can be, but not limited to, 20:100:8, 20:300:12, 20:300:8, 30:100:8, 30:300:8, 30:300:12, etc. Under the above ratio, the herbicides have no antagonistic effect, and exhibit additive or synergistic effects. The corresponding selection can be made according to the actual application scenarios such as weed species and crop sensitivity.

[0029] After ratio screening, when the mass ratio of high-efficiency flupyralid, 2,4-D butyrate sodium salt and fluazifop-butyl was 20:300:12, the active inhibition rate against barnyard grass, Amaranthus retroflexus and Polygonum was the most significant.

[0030] During specific application, different formulations will have different effects on the effects of the ternary compound herbicide. Based on the above ratios, the present invention screened suspoemulsions and water-dispersible granules using suspension rate and thermal storage stability as indicators. The screening results showed that suspoemulsions were more ideal. Specifically:

[0031] The adjuvant ratio of 33.2% highly effective haloxyfop-ethyl·2,4-D butyrate sodium salt·flumizone SE (2:30:1.2) was screened and optimized, and the following ratio was preliminarily determined:

[0032] The composition comprises 100 parts by weight of: 2 parts of fluazifop-butyl, 30 parts of 2,4-D butyrate sodium salt, 1.2 parts of fluazifop-butyl, 8 to 15 parts of emulsifier (E-1306, 1601#, BY130), 0.5 to 2.5 parts of dispersant (PTE), 0.5 to 2.5 parts of suspending agent (xanthan gum, soluble starch, CMC), and the rest is made up with water.

[0033] The composition was further optimized to 2 parts of fluazifop-butyl, 30 parts of 2,4-D butyrate sodium salt, 1.2 parts of fluazifop-butyl, 8 parts of E-1306, 3 parts of 1601#, 1.5 parts of dispersant (PTE), 0.5 parts of suspending agent (soluble starch), and the rest was made up with water.

[0034] According to a second aspect of the present invention, a method for preparing the above-mentioned ternary compound herbicide is provided, comprising taking a formula ratio of highly effective flupyralid, 2,4-D butyrate sodium salt and fluazifop-butyl according to the characteristics of the dosage form, supplemented with corresponding adjuvants and processing procedures, to obtain the ternary compound herbicide.

[0035] The method has simple process, convenient operation and is suitable for industrial production.

[0036] Based on the beneficial effects of the ternary combination herbicide provided by the present invention, another aspect of the present invention also provides the use of the above-mentioned ternary combination herbicide in weed control in soybean fields, blueberry gardens, and non-arable land.

[0037] The highly effective combination of flupyralid, 2,4-D butyrate sodium salt, and fluazifop-butyl, screened by the present invention, demonstrates high weed control effectiveness in blueberry orchards, soybean fields, and non-arable land. Compared to glyphosate, it provides rapid results when applied to stems and leaves, and its soil-sealing effect results in a long-lasting effect. Furthermore, these three agents have a short residual life and are applied using inter-row directional spraying, making them safe for blueberries and soybeans. The scope of application of this invention is expanding with further experimental research, and its application potential remains significant.

[0038] When the ternary compound herbicide is used for weed control in a blueberry garden, the weeds include at least one of barnyard grass, foxtail grass, crabgrass, kiwi fruit, Amaranthus retroflexus, Polygonum, Echinops chinensis, dandelion, Humulus, velvetleaf, Chenopogon quinoa and Kochia scoparia.

[0039] Alternatively, the application rate for blueberry fields is 996.0-1394.4 g ai / hm 2 , for example, but not limited to 996.0g ai / hm 2 、1000g ai / hm 2 、1100g ai / hm 2 、1200g ai / hm 2 、1300g ai / hm 2 or 1394.4g ai / hm 2 At the above application dosage, it has a high control effect on annual weeds in blueberry gardens.

[0040] When the three-way compound herbicide is used for weed control in soybean fields, the main weed species are grass weeds such as barnyard grass, crabgrass, and millet; and broadleaf weeds such as quinoa, velvetleaf, Amaranthus retroflexus, Polygonum, Commelina, Echinops chinensis, Kochia scoparia, and Solanum nigrum. Most weeds are in the 2-6 leaf stage when the herbicide is applied.

[0041] Optionally, the application rate is 796.8-1095.6 g ai / hm 2 , for example, but not limited to 796.8ga.i. / hm 2 、800g ai / hm 2 、900g ai / hm 2 、1000g ai / hm 2 or 1095.6ga.i. / hm 2 At the above application dosage, it has a high prevention effect on annual weeds in soybean fields, especially in plots with high weed density and severe damage.

[0042] Preferably, the pesticide application method includes inter-row directional spraying, which is safer for blueberries and soybeans.

[0043] When the ternary compound herbicide is used for weed control in non-arable land, the weeds include: grass weeds mainly including barnyard grass and foxtail; broadleaf weeds mainly including quinoa, mugwort, dandelion, cirsium, kochia, humulus, polygonum, Rumex barbatum, ragweed, etc. Most weeds are in the 6-8 leaf stage. Except for dandelion, the other weeds are 8-20 cm tall. Optionally, when the ternary compound herbicide is used for weed control in non-arable land, its application rate is 1095.6-1494.0 g ai / hm 2, for example, but not limited to 1095.6g ai / hm 2 、1100g ai / hm 2 、1200g ai / hm 2 、1300g ai / hm 2 、1400ga.i. / hm 2 or 1494.0g ai / hm 2 At the above application dosage, it has a high control effect on non-arable land weeds.

[0044] Because the screening test is relatively complex, the eliminated test results are not described here in detail. Only the screening process of the specific drug combination and ratio determined is described in detail. The present invention is further illustrated by the following examples. Unless otherwise specified, the materials in the examples were prepared according to existing methods or directly purchased from the market.

[0045] Example 1 Ratio screening test

[0046] 1. Screening and evaluation methods

[0047] The Colby method was used to calculate the theoretical fresh weight control efficacy (E0) of each treatment combination using the highly effective herbicide halpyrazo-ethyl, 2,4-D butyrate sodium salt, and fluazifop-propyl. This was then compared with the measured control efficacy (E) to evaluate the combined effect of the two herbicides on weeds. The theoretical fresh weight control efficacy of the mixed herbicide was calculated using the following formula:

[0048]

[0049] Where:

[0050] X—fresh weight control effect of herbicide 1 at the dosage of P;

[0051] Y—fresh weight control effect of herbicide 2 at a dosage of Q;

[0052] Z—fresh weight control effect of herbicide 3 at the dosage R;

[0053] E0—the theoretical control effect of herbicide 1 at a dosage of P + the theoretical control effect of herbicide 2 at a dosage of Q + the theoretical control effect of herbicide 3 at a dosage of R;

[0054] E—The actual control effect of herbicides 1, 2 and 3 when mixed in different ratios.

[0055] E-E0>10% is a synergistic effect; E-E0<-10% is an antagonistic effect; and E-E0 values ​​between the theoretical value ±10% are additive effects.

[0056] 2. Ratio screening test design and test results

[0057] The results of the ratio screening test showed that:

[0058] The E-E0 values ​​of flupyralid, 2,4-D butyrate sodium salt, and fluazifop-butyl against the broadleaf weeds Amaranthus retroflexus and Polygonum truncatum at a ratio of 8-20:100-300:8-12 were all >10%, demonstrating significant synergy. Their combined effect on Echinochloa crusgalli was synergistic or additive, with no antagonism observed. Therefore, a combination of these three agents at a ratio of 20-30:100-300:8-12 is feasible. A ratio of 20:300:8-12 showed significant synergy against Echinochloa crusgalli, Amaranthus retroflexus, and Polygonum truncatum, with E-E0 values ​​exceeding 14% at 20:300:12, indicating the optimal ratio. This was used as the basis for formulation screening and field trials. Specific screening test results are shown in Tables 1, 2, and 3.

[0059] Table 1 Activity determination of combined action against barnyard grass

[0060]

[0061] Table 2 Determination of the activity of combined action on Amaranthus retroflexus

[0062]

[0063] Table 3 Determination of the activity of the combined action on Polygonum multiflorum

[0064]

[0065] Example 2 Dosage Form Screening Test

[0066] In this embodiment, based on the above proportioning test, suspension emulsion and water dispersible granules were screened with suspension rate and pharmaceutical hot storage stability as indicators. The screening results showed that suspension emulsion was more ideal. In the formulation screening, the suspension rate and stability test results are shown in Table 4, and the hot storage stability determination was carried out according to the national standard.

[0067] Table 4 Activity and thermal storage stability test table

[0068] Dosage form Suspension rate% Hot storage stability 33.2% highly effective haloxyfop-methyl·2,4-D butyrate sodium salt·fluazifop-propyl SE (2:30:1.2) 95.0％ qualified 33.2% highly effective haloxyfop-methyl·2,4-D butyrate sodium salt·fluazifop-propyl OD (2:30:1.2) 88.5 Unqualified

[0069] in

[0070] 1) The adjuvant ratio of 33.2% highly effective haloxyfop-ethyl·2,4-D butyrate sodium salt·flumizone SE (2:30:1.2) was screened and optimized and preliminarily determined to be the following:

[0071] The suspoemulsion comprises, based on 100 parts by weight, 2 parts of fluazifop-butyl, 30 parts of 2,4-D butyrate sodium salt, 1.2 parts of fluazifop-butyl, 8 to 15 parts of emulsifier (E-1306, 1601#, BY130), 0.5 to 2.5 parts of dispersant (PTE), 0.5 to 2.5 parts of suspending agent (xanthan gum, soluble starch, CMC), and the rest is made up with water.

[0072] The composition was further optimized to 2 parts of fluazifop-butyl, 30 parts of 2,4-D butyrate sodium salt, 1.2 parts of fluazifop-butyl, 8 parts of E-1306, 3 parts of 1601#, 1.5 parts of dispersant (PTE), 0.5 parts of suspending agent (soluble starch), and the rest was made up with water.

[0073] The specific processing flow is as follows: first, add the measured amount of propargyl fluazifop-butyl water into the sand mill for sand grinding. After the particles of the original drug powder are less than 40um, open the feed valve and enter the shear mixer, add some additives for stirring, on the other hand, put 2,4-D butyrate sodium salt and high-efficiency flupyrazole and the corresponding additives into their own separate shear mixers for sufficient shearing and stirring. After the properties are stable, put the three into the same shear mixer, and at the same time add other additives (emulsifiers, dispersants, spreaders, suspending agents, developing agents, weed leaf affinity agents and other additives) and perform high-speed shearing. After the physical and chemical properties are stable, enter the modulation kettle, stir evenly, open the bottom valve of the modulation kettle, add the suspoemulsion to the filter for filtration, move the filtered suspoemulsion to the suspension tank, let it stand, and after natural defoaming, take samples for testing. After passing the test, send it to the suspension packaging machine for packaging.

[0074] Example 3 Field safety test and field efficacy test on weeds

[0075] 1. The results of the field test in the blueberry garden showed that the effective ingredient dosage of 33.2% high-efficiency fluazifop-p-ethyl·2,4-D butyrate sodium salt·fluazifop-propyl SE was 996.0-1394.4 g ai / hm 2 , using inter-row directional spraying, has a high control effect on annual weeds in blueberry gardens. Application rate 996.0g ai / hm 2 Compared with the control agent 30% g / L 2,4 drops of sodium butyrate + 108g / L high-efficiency haloxyfop-butyl (1125.0+90)g ai / hm 2 In comparison, the difference in prevention effect is not significant, and the amount of pesticide applied is reduced by 18%.

[0076] Table 5 Results of a weed control test using 33.2% highly effective fluazifop-ethyl·2,4-D butyrate sodium salt·fluazifop-propyl SE in a blueberry orchard (30 days after application)

[0077]

[0078] Note: Annual grass weeds: Echinochloa crus-galli, Setaria viridis, Digitaria sanguinalis, and Leptochloa chinensis. Annual broadleaf weeds: Amaranthus retroflexus, Polygonum multiflorum, Echinops serrata, Taraxacum officinale, Humulus chinensis, Ramulus velutipes, Chenopogon quinoa, and Kochia scoparia.

[0079] 2. The weed control effect of 33.2% highly effective fluazifop-ethyl·2,4-D butyrate sodium salt·fluazifop-propyl SE on non-cultivated land

[0080] Field conditions at the time of application: Grass weeds mainly included barnyard grass and foxtail grass; broadleaf weeds mainly included quinoa, mugwort, dandelion, cirsium, kochia, humulus, polygonum, Rumex barbatum, and ragweed. Most weeds were in the 6-8 leaf stage. Except for dandelion, the other weeds were 8-20 cm tall. Watering rate: 375 L / hm2 2 .

[0081] The test results showed that visual observation showed that compared with the control agent glyphosate, 33.2% highly effective flupyralid·2,4-D butyrate sodium salt·flumizone SE had a similar duration of weed control on non-arable land, but the weed suppression and death rate were higher than glyphosate. 2-3 days after application, the weeds showed obvious symptoms of phytotoxicity and began to die 5-7 days later. 15 days after application, the application rate was 1095.6-2589.6g ai / hm 2 The weed control efficiency was higher than 30% glyphosate (1350.0g ai / hm 2 ); and the duration of effect is long. Compared with glufosinate ammonium, the control effect is equivalent 15 days after application, but the control effect is higher than glufosinate ammonium 30 days after application. The application rate is 1095.6~1494.0g ai / hm 2 , it has a higher control effect on weeds in non-arable land. Therefore, the appropriate dosage for non-arable land is 1095.6~1494.0g ai / hm 2 .

[0082] Table 6 Test results of 33.2% highly effective haloxyfop-ethyl·2,4-D butyrate sodium salt SE on weed control in non-cultivated land

[0083]

[0084] 3. Efficacy of 33.2% highly effective fluazifop-ethyl·2,4-D butyrate sodium salt·fluazifop-propyl SE in controlling weeds in soybean fields

[0085] Field Overview: The main weed species are grass weeds such as barnyard grass, crabgrass, and wild millet; broadleaf weeds such as quinoa, velvetleaf, amaranthus retroflexus, polygonum, dayflower, water spinach, kochia scoparia, and nightshade. Most weeds were at the 2-6 leaf stage when the pesticide was applied.

[0086] The test results show that when 33.2% highly effective flupyralid·2,4-D butyrate sodium salt·flumizone SE was used for directional spraying in soybean fields at the 1-3 compound leaf stage, compared with the control agent 35% highly effective flupyralid·isothiazone·fomesafen OD, 33.2% highly effective flupyralid·2,4-D butyrate sodium salt·flumizone SE had the characteristics of fast effect and high prevention efficiency in controlling weeds in soybean fields. This has increased the types and selectivity of herbicides in soybean fields, especially for plots with high weed density and severe damage, and has a higher prevention efficiency. Therefore, this agent can be used in soybean fields by directional spraying, and the appropriate dosage is 160-220 mL / mu, that is, 796.8-1095.6 g ai / hm. 2 Specific data are shown in Table 7.

[0087] Table 7 Test results of 33.2% highly effective haloxyfop-ethyl·2,4-D butyrate sodium salt SE on weed control in soybean fields (directional spray)

[0088]

[0089]

[0090] 4. Safety of subsequent crops after application of 33.2% highly effective Halpyralid·2,4-D butyrate sodium salt SE in soybean fields

[0091] The test results show that compared with the control agent 35% high-efficiency fluazifop-ethyl·isothiazolin·fomesafen OD, 33.2% high-efficiency fluazifop-ethyl·2,4-D butyrate sodium salt SE is safer for subsequent crops such as potatoes and corn than the control agent.

[0092] Table 8 Safety of 33.2% highly effective Halpyralid·2,4-D butyrate sodium salt SE applied to soybean fields and its safety to subsequent crops (directional spraying)

[0093]

[0094] The above examples demonstrate that the highly effective flupyralid, 2,4-D butyrate sodium salt, and fluazifop-butyl have different mechanisms of action and herbicidal spectrums. Bioassay screening results show that their combination has additive or synergistic effects on weeds, with no antagonistic effects observed. This combination, in particular, exhibits a wide range of synergistic effects against broadleaf weeds. Field trial results further demonstrate the rationality and feasibility of combining these three agents. They demonstrate high control effectiveness against annual weeds, and for other weeds in non-arable land, the appropriate ratio range is (20-30):(100-300):(8-12).

[0095] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A ternary compound herbicide, characterized in that: The active ingredients of the ternary compound herbicide consist of high-efficiency fluazifop-p-ethyl, 2,4-D butyrate sodium salt and fluazifop-propyl; the mass ratio of the high-efficiency fluazifop-p-ethyl, 2,4-D butyrate sodium salt and fluazifop-propyl is in the range of 20-30:100-300:8-12.

2. The ternary compound herbicide according to claim 1, characterized in that: The mass ratio of the high-efficiency fluazifop-p-ethyl, 2,4-D butyrate sodium salt and fluazifop-propyl is 20:300:

12.

3. The ternary compound herbicide according to claim 1 or 2, characterized in that: The formulation of the ternary compound herbicide is a suspoemulsion.

4. The ternary compound herbicide according to claim 3, characterized in that: The composition comprises, based on 100 parts by weight, 2 parts of fluazifop-ethyl, 30 parts of 2,4-D butyrate sodium salt, 1.2 parts of fluazifop-propyl, 8 to 15 parts of emulsifier, 0.5 to 2.5 parts of dispersant, 0.5 to 2.5 parts of suspending agent and the balance of water.

5. Use of the ternary compound herbicide according to any one of claims 1 to 4 in weed control in blueberry gardens and non-cultivated land; in, The weeds in the blueberry garden are annual grass weeds and annual broadleaf weeds; the annual grass weeds are barnyard grass, foxtail grass, crabgrass, and Leptochloa chinensis; the annual broadleaf weeds are Amaranthus retroflexus, Polygonum, Echinops edulis, Taraxacum officinale, Humulus chinensis, Abutilon, Chenopogon quinoa, and Kochia scoparia; The weeds in the non-cultivated land are grass weeds and broadleaf weeds; the grass weeds are barnyard grass and foxtail grass; the broadleaf weeds are quinoa, mugwort, dandelion, thistle, kochia scoparia, humulus, polygonum, Rumex bartholina, and ragweed; The application rate of the three-way compound herbicide in the blueberry garden is 996.0-1394.4 g ai / hectare; The application rate of the ternary combination herbicide on non-arable land is 1095.6~1494.0 g ai / hectare.

Images