A dispersible oil suspension herbicide for wheat field

Abstract

This invention belongs to the field of novel pesticides and provides a dispersible oil suspension for weed control in wheat fields, comprising a herbicidal active ingredient and adjuvants. The herbicidal active ingredient is diflubenzuron and triclopyralid butoxyethyl ester. The adjuvants consist of an emulsifying dispersant, a synergist, a thickener, an antifreeze agent, and a dispersion medium. The synergist is composed of lauryl alcohol and panthenol, with a weight ratio of lauryl alcohol to panthenol of 1:5-5:1, and its dosage is 5-10% of the total weight of the composition. By adding lauryl alcohol and panthenol as synergist, the moisturizing properties of the diflubenzuron and triclopyralid butoxyethyl ester solutions can be significantly improved, preventing the droplet volume from rapidly decreasing and facilitating the absorption of the pesticides, thereby achieving a synergistic effect.

Description

Technical Field

[0001] This invention belongs to the field of novel pesticide technology and provides a dispersible oil suspension for weed control in wheat fields. Background Technology

[0002] Pesticides are now indispensable in crop cultivation. Chemical pesticides are effective in preventing and controlling pests, diseases, and weeds, thus ensuring high crop yields.

[0003] Triclopyralid butoxyethyl ester is a pyridineoxycarboxylic acid systemic herbicide that is rapidly absorbed by leaves and roots and translocated within the plant. It acts on nucleic acid metabolism, causing the plant to produce excessive nucleic acids, transforming some tissues into meristematic tissues, resulting in malformed growth of leaves, stems, and roots, depletion of storage substances, and blockage or rupture of vascular bundles, ultimately leading to the gradual death of the plant.

[0004] Biflusulfonamide is a systemic triazolylpyrimidine sulfonamide herbicide. Its mechanism of action is to inhibit acetolactate synthase in plants. It is a broad-spectrum herbicide for post-emergence foliar application to control broadleaf weeds in wheat fields. Several hours after application, plant growth is inhibited, but obvious symptoms of damage, such as chlorosis and necrosis of meristematic tissues, appear only after several days. It has good residual effect and its efficacy is stable at low temperatures.

[0005] The mixing of pesticides is one of the principles of scientific pesticide use. Rational mixing can broaden the control spectrum, improve control efficacy, reduce the number of pesticide applications, reduce the amount used in the field, lower control costs, and delay or mitigate the development and progression of resistance. Triclopyralid butoxyethyl ester and diflubenzuron are two agents with different mechanisms of action; their combination can both broaden the weed control spectrum and enhance rapid efficacy. Systemic pesticides need to be absorbed by crops to exert their full effect. Good moisture retention allows for greater systemic absorption. If the pesticide has poor moisture retention, it dries quickly and adheres to the leaf surface, hindering systemic absorption. Current technology lacks corresponding technical insights; therefore, improving the moisture retention and water-locking properties of systemic pesticides is a pressing issue in this field. Summary of the Invention

[0006] To address the aforementioned shortcomings of existing technologies, this invention provides a dispersible oil suspension for wheat field weed control, comprising a herbicidal active ingredient and adjuvants. The herbicidal active ingredient is diflubenzuron and triclopyralid butoxyethyl ester. The adjuvants consist of an emulsifying dispersant, a synergistic agent, a thickener, an antifreeze agent, and a dispersion medium. The synergistic agent is composed of lauryl alcohol and panthenol, with a weight ratio of lauryl alcohol to panthenol of 1:5-5:1, and its dosage is 5-10% of the total composition weight. By adding lauryl alcohol and panthenol as synergistic agents, the moisturizing properties of the diflubenzuron and triclopyralid butoxyethyl ester solutions can be significantly improved, preventing the droplet volume from rapidly decreasing and facilitating the absorption of the herbicides, thereby enhancing their efficacy.

[0007] The specific technical solution of the present invention is as follows:

[0008] A wheat field weed control dispersible oil suspension includes a herbicidal active ingredient and adjuvants. The herbicidal active ingredient is diflubenzuron and triclopyralid butoxyethyl ester. The adjuvants are composed of an emulsifying dispersant, a synergistic agent, a thickener, an antifreeze agent, and a dispersion medium. The synergistic agent is composed of lauryl alcohol and panthenol, and the weight ratio of lauryl alcohol to panthenol is 1:5-5:1.

[0009] As a preferred option, the mass ratio of diflubenzuron to triclopyralid butoxyethyl ester is 1-6:20-40.

[0010] As a preferred embodiment, the synergistic agent has a weight fraction of 5-10%.

[0011] As a preferred embodiment, the emulsifying dispersant may be selected from one or more of the following: anionic / nonionic modified cationic polymer mixtures, polyoxypropylene / polyoxyethylene block copolymers, fatty alcohol polyoxyethylene ethers, and calcium dodecylbenzenesulfonate.

[0012] Furthermore, the anionic nonionic modified cationic polymer mixture is selected from HDB-D68T, the polyoxypropylene polyoxyethylene block copolymer is selected from 1601, the fatty alcohol polyoxyethylene ether is selected from AEO-5, and the calcium dodecylbenzenesulfonate is selected from 500#.

[0013] As a preferred embodiment, the dispersion medium is selected from one or more of methylated vegetable oil, soybean oil, rapeseed oil, and corn oil.

[0014] As a preferred embodiment, the thickener is at least one of organic bentonite and silica; the antifreeze is urea.

[0015] As a preferred embodiment, the weight ratio of lauryl alcohol to panthenol is 1:3 to 3:1.

[0016] As a preferred option, the content of the herbicidal active ingredients diflubenzuron and triclopyralid butoxyethyl ester is 20%-80%.

[0017] More preferably, when the emulsifying dispersant is composed of anionic and nonionic modified cationic polymer mixture and calcium dodecylbenzenesulfonate, and the ratio of the two is 1:1 to 4:1, the dispersion medium is soybean oil.

[0018] More preferably, when the emulsifying dispersant is composed of anionic and nonionic modified cationic polymer mixture, calcium dodecylbenzenesulfonate and fatty alcohol polyoxyethylene ether, and the ratio of the three is 5-8:1:1-5, the dispersion medium is corn oil.

[0019] During the research and development process, the applicant accidentally discovered that adding lauryl alcohol and panthenol to the dispersible oil suspension of diflubenzuron and triclopyralid butoxyethyl ester significantly improved the wetting effect of the dispersible oil suspension on wheat. When the dispersible oil suspension containing lauryl alcohol and panthenol synergists is diluted with water, it slows down the rapid shrinkage of droplet volume, which is beneficial for pesticide absorption and increases the amount of pesticide absorbed by the crop. This significantly improves the weeding effect, while also reducing the amount of pesticide used and extending the pesticide's lifespan.

[0020] Compared with the prior art, the main technical effects of this application are as follows:

[0021] (1) This invention is a combination of two herbicides with different mechanisms of action, which can reduce the amount of herbicide used and improve the efficacy of the herbicide; delay the development of resistance of weeds to the two herbicides and help the rational use of the herbicide.

[0022] (2) Both diflubenzuron and triclopyralid butoxyethyl ester herbicides are systemic herbicides. The addition of lauryl alcohol and panthenol moisturizing adjuvants enhances the water-locking properties of the herbicide solution, promotes crop absorption of the herbicide solution, and increases the efficacy.

[0023] (3) The herbicidal combination of diflubenzuron and triclopyralid butoxyethyl ester is a dispersible oil suspension, which uses plant oil as a dispersion medium. The plant oil dispersion medium is derived from plants, making it green, environmentally friendly and pollution-free. Attached Figure Description

[0024] Figure 1 The diagram shows the initial state of dispersion stability of the products in Example 4 and Example 1.

[0025] As shown in the figure, there is obvious floating paste on the upper part of Example 4, indicating that its emulsification effect is not good.

[0026] Figure 2 The diagram shows the dispersion of the products of Comparative Example 1 and Example 1 on paper after being diluted with water;

[0027] As shown in the figure, there is a clear watermark around Comparative Example 1, indicating that its water-locking performance is poor. Detailed Implementation

[0028] The following detailed embodiments further illustrate the above-described content of the present invention, but should not be construed as limiting the scope of the subject matter of the present invention to the following examples. All technologies implemented based on the above-described content of the present invention fall within the scope of the present invention. All percentages below are by weight, and all additives used are conventional additives in the art.

[0029] Unless otherwise specified, the experimental methods used in the following examples and comparative examples are conventional methods, and the percentages below are weight percentages.

[0030] Unless otherwise specified, all materials and reagents used in the following examples and comparative examples are commercially available.

[0031] The HDB-D68T used in the following examples and comparative examples was purchased from Chuzhou Debang Chemical Technology Co., Ltd.; other raw materials such as 1601, AEO-5, and 500# are all products that can be directly purchased on the market.

[0032] Example 1: 32% diflubenzuron·triclopyralid butoxyethyl ester dispersible oil suspension:

[0033] Diflubenzuron, 1%; Triclopyralid butoxyethyl ester, 31%; HDB-D68T, 12%; 500#, 3%; Urea, 2%; Organobentonite, 1.2%; Silica, 0.5%; Synergistic adjuvant (a mixture of lauryl alcohol and panthenol in a weight ratio of 3:2), 5%; Soybean oil to make up 100%.

[0034] Example 2: 48% diflubenzuron·triclopyralid butoxyethyl ester dispersible oil suspension:

[0035] Diflubenzuron, 1.5%; Triclopyralid butoxyethyl ester, 46.5%; HDB-D68T, 10%; 500#, 2%; AEO-5, 3%; Urea, 1.5%; Organobentonite, 1.0%; Silica, 0.3%; Synergistic adjuvant (a mixture of lauryl alcohol and panthenol in a weight ratio of 2:3), 8%; Corn oil to make up 100%.

[0036] Example 3: 64% diflubenzuron·triclopyralid butoxyethyl ester dispersible oil suspension:

[0037] Diflubenzuron, 2%; Triclopyralid butoxyethyl ester, 62%; 1601, 12%; 500#, 3%; AEO-5, 3%; Urea, 1%; Organobentonite, 0.5%; Silica, 0.3%; Synergistic adjuvant (a mixture of lauryl alcohol and panthenol in a weight ratio of 1:2) 10%; Methylated vegetable oil to make up 100%.

[0038] Example 4: 32% diflubenzuron·triclopyralid butoxyethyl ester dispersible oil suspension:

[0039] Diflubenzuron, 1%; Triclopyralid butoxyethyl ester, 31%; HDB-D68T, 12%; 1601, 3%; Urea, 2%; Organobentonite, 1.2%; Silica, 0.5%; Synergistic adjuvant (a mixture of lauryl alcohol and panthenol in a weight ratio of 3:2), 5%; Soybean oil to make up 100%. Compared with Example 1, Example 4 replaced 500# with 1601.

[0040] Example 5: 48% diflubenzuron·triclopyralid butoxyethyl ester dispersible oil suspension:

[0041] Diflubenzuron, 1.5%; Triclopyralid butoxyethyl ester, 46.5%; HDB-D68T, 10%; 500#, 2%; AEO-5, 3%; Urea, 1.5%; Organobentonite, 1.0%; Silica, 0.3%; Synergistic agent 8% (a mixture of lauryl alcohol and panthenol in a weight ratio of 2:3); Soybean oil to make up 100%. Compared with Example 2, Example 5 replaced the corn oil dispersion medium with soybean oil.

[0042] The preparation method of the diflubenzuron·triclopyralid butoxyethyl ester dispersible oil suspension described in Examples 1-5 above specifically includes the following steps:

[0043] (1) Add vegetable oil dispersion medium, emulsifying dispersant, thickener, antifreeze, synergist, diflubenzuron and triclopyralid butoxyethyl ester to the reaction vessel according to the ratio, stir and shear to mix them evenly to obtain a mixture;

[0044] (2) Add the mixture obtained in step (1) to a sand mill for grinding until the particle size D90=5um. After grinding is completed, the diflubenzuron·triclopyroxyacetic acid butoxyethyl ester dispersible oil suspension is obtained.

[0045] Comparative Example 1: 32% diflubenzuron·triclopyralid butoxyethyl ester dispersible oil suspension:

[0046] Diflubenzuron, 1%; Triclopyralid butoxyethyl ester, 31%; HDB-D68T, 12%; 500#, 3%; Urea, 2%; Organic bentonite, 1.2%; Silica, 0.5%; Soybean oil to make up 100%.

[0047] Compared with Example 1, no synergistic additives were added in Comparative Example 1.

[0048] Comparative Example 2: 48% diflubenzuron·triclopyralid butoxyethyl ester dispersible oil suspension:

[0049] Diflubenzuron, 1.5%; Triclopyralid butoxyethyl ester, 46.5%; HDB-D68T, 10%; 500#, 2%; AEO-5, 3%; Urea, 1.5%; Organic bentonite, 1.0%; Silica, 0.3%; Corn oil to make up 100%.

[0050] Compared with Example 2, Comparative Example 2 did not contain any synergistic additives.

[0051] Comparative Example 3: 64% diflubenzuron·triclopyralid butoxyethyl ester dispersible oil suspension:

[0052] Diflubenzuron, 2%; Triclopyralid butoxyethyl ester, 62%; 1601, 12%; 500#, 3%; AEO-5, 3%; Urea, 1%; Organobentonite, 0.5%; Silica, 0.3%; Methylated vegetable oil to make up 100%.

[0053] Compared with Example 3, Comparative Example 3 did not contain any synergistic additives.

[0054] Comparative Example 4: 32% diflubenzuron·triclopyralid butoxyethyl ester dispersible oil suspension:

[0055] Diflubenzuron, 1%; Triclopyralid butoxyethyl ester, 31%; HDB-D68T, 12%; 500#, 3%; Urea, 2%; Organic bentonite, 1.2%; Silica, 0.5%; Lauryl alcohol, 5%; Soybean oil to make up 100%.

[0056] Compared with Example 1, the synergist in Comparative Example 4 was lauryl alcohol.

[0057] Comparative Example 5: 32% diflubenzuron·triclopyralid butoxyethyl ester dispersible oil suspension:

[0058] Diflubenzuron, 1%; Triclopyralid butoxyethyl ester, 31%; HDB-D68T, 12%; 500#, 3%; Urea, 2%; Organobentonite, 1.2%; Silica, 0.5%; Panthenol, 5%; Soybean oil to make up 100%.

[0059] Compared with Example 1, the synergist in Comparative Example 5 was panthenol.

[0060] Comparative Example 6: 32% diflubenzuron·triclopyralid butoxyethyl ester dispersible oil suspension:

[0061] Diflubenzuron, 1%; Triclopyralid butoxyethyl ester, 31%; HDB-D68T, 12%; 500#, 3%; Urea, 2%; Organobentonite, 1.2%; Silica, 0.5%; Lauryl alcohol, 0.8%; Panthenol, 4.8%; Soybean oil to make up 100%.

[0062] Compared with Example 1, the synergist in Comparative Example 6 was lauryl alcohol: panthenol 1:6.

[0063] Comparative Example 7: 32% diflubenzuron·triclopyralid butoxyethyl ester dispersible oil suspension:

[0064] Diflubenzuron, 1%; Triclopyralid butoxyethyl ester, 31%; HDB-D68T, 12%; 500#, 3%; Urea, 2%; Organic bentonite, 1.2%; Silica, 0.5%; Sodium diisooctyl succinate sulfonate, 5%; Soybean oil to make up 100%.

[0065] Compared with Example 1, the synergistic agent in Comparative Example 7 was sodium diisooctyl succinate sulfonate.

[0066] The herbicidal pesticide compositions of Comparative Examples 1-7 were prepared according to the preparation methods of the examples to obtain the corresponding formulations.

[0067] Performance testing:

[0068] 1) Determination of the moisturizing and water-locking properties of the pharmaceutical agent:

[0069] To determine the moisturizing properties of the agent, the dryness of the sample was measured using a Horus dynamic dryness analyzer (Formulaction) at the usage concentration. At (25±1)℃, 2 μL of the sample was dropped directly under a laser for detection, with pure water used as a control. The drying time was recorded. The results are shown in Table 1 below:

[0070] Table 1

[0071] Sample Name Drying time, min Example 1 30min10s Example 2 30min20s Example 3 29min59s Example 4 30min5s Example 5 30min15s Comparative Example 1 21min52s Comparative Example 2 21min10s Comparative Example 3 22min5s Comparative Example 4 22min50s Comparative Example 5 22min55s Comparative Example 6 25min40s Comparative Example 7 21min30s Water comparison 20min58s .

[0072] Based on the data comparison above, the samples with added synergistic agents lauryl alcohol and panthenol all exhibited better moisturizing and water-locking properties, while the samples without added synergistic agents and those with added lauryl alcohol and panthenol alone had poorer moisturizing and water-locking properties.

[0073] Since the reagent needs to be diluted with water before use, the laboratory prepared a stock solution by mixing the above reagent with water at a weight ratio of 1:1. To more intuitively observe the water-locking performance of the reagent, the stock solution was dropped onto A4 paper, and the wetting of the paper was observed at 5 minutes and 10 minutes. The results are shown in Table 2:

[0074] Table 2

[0075] Sample Name 5-minute paper wetting state 10-minute paper wetting state Example 1 No watermark around the droplet No watermark around the droplet Example 2 No watermark around the droplet No watermark around the droplet Example 3 No watermark around the droplet No watermark around the droplet Example 4 No watermark around the droplet No watermark around the droplet Example 5 No watermark around the droplet No watermark around the droplet Comparative Example 1 Watermark around the droplet Watermark around the droplet Comparative Example 2 Watermark around the droplet Watermark around the droplet Comparative Example 3 Watermark around the droplet Watermark around the droplet Comparative Example 4 Watermark around the droplet Watermark around the droplet Comparative Example 5 Watermark around the droplet Watermark around the droplet Comparative Example 6 No watermark around the droplet Watermark around the droplet Comparative Example 7 Watermark around the droplet Watermark around the droplet .

[0076] The table above shows that samples with the added synergistic agents lauryl alcohol and panthenol exhibited good water-locking properties, while samples without synergistic agents and those with lauryl alcohol or panthenol alone showed poor water-locking properties, with watermarks appearing around the droplets after 5 minutes. (e.g.) Figure 2 As shown, Comparative Example 1 has a noticeable watermark around it.

[0077] After the dispersible oil suspension of Comparative Example 6 was diluted and dropped onto a piece of paper, no watermark was found around the droplet after 5 minutes, but watermark appeared around the droplet after 10 minutes. This indicates that lauryl alcohol and panthenol have a good wetting and improving effect on the dispersible oil suspension of the present invention within a certain ratio range. Beyond a certain range, the synergistic effect weakens.

[0078] (ii) Field trials:

[0079] Experiments on the control of cleavers and shepherd's purse in wheat fields

[0080] Test reagents: Examples 1-5, Comparative Examples 1-7, and water.

[0081] Experimental Methods: The experiment was conducted in Pangjia Town, Boxing County, Binzhou City, Shandong Province. The soil type was alluvial soil, and the wheat variety was Luyuan 502. The pesticide spraying treatment was carried out on March 30, 2024. The effective ingredient dosage was designed to be 15.5 g / mu (approximately 10.5 kg / acre); a water control was also included, for a total of 13 treatments. Each treatment was replicated 4 times, resulting in 52 plots, each with an area of ​​30 m². 2 , randomized block arrangement.

[0082] Weed control effectiveness survey: The absolute value survey method was used, with 4 sampling points in each plot, and each sampling point was 0.25 m. 2 The number of weeds should be investigated 20 days after application, and the control efficacy per plant should be calculated.

[0083] F = (CK - M) / CK × 100%

[0084] In the formula: F represents the control efficacy per plant (fresh weight control efficacy), CK represents the number of weed plants in the control area (fresh weight), and M represents the number of weed plants in the treatment area (fresh weight). Specific results are shown in Table 3 below:

[0085] Table 3

[0086] Sample number Active ingredient dosage (g / acre) Efficacy of cleavers in preventing galbium Effects of shepherd's purse on Example 1 15.5 93.2 92.1 Example 2 15.5 92.3 91.6 Example 3 15.5 91.8 91.2 Example 4 15.5 50.5 48.7 Example 5 15.5 52.3 51.8 Comparative Example 1 15.5 82.3 81.2 Comparative Example 2 15.5 83.1 82.6 Comparative Example 3 15.5 82.5 81.8 Comparative Example 4 15.5 84.6 84.8 Comparative Example 5 15.5 84.1 83.1 Comparative Example 6 15.5 86.3 86.5 Comparative Example 7 15.5 84.2 83.6 Water comparison 15.5 / / .

[0087] The table above shows that:

[0088] 1. A comparison of Examples 1-3 and Comparative Examples 1-3 revealed that the control efficacy of Examples 1-3 against Galium cleavers and Capsella bursa-pastoris was higher than that of the system without the addition of the synergistic adjuvant.

[0089] 2. According to the above "Determination of the Moisturizing and Water-Locking Performance of the Agent", the wetting performance of the agents in Examples 4 and 5 is also very good, but the preventive effect is very poor. It is suspected that this may be caused by poor dispersion stability. Next, a dispersion stability experiment will be carried out to verify it.

[0090] 3. When lauryl alcohol and panthenol in the synergistic additives are within a certain proportion range, they have a good effect on improving the wetting properties of the dispersible oil suspension of the present invention. However, if the proportion range is exceeded, the effect will be worse.

[0091] 4. By comparing Examples 1-3 with Comparative Examples 1-7, it was found that the addition of different synergistic adjuvants could improve the weeding effect. The synergistic effect was most obvious when lauryl alcohol and panthenol were added in a certain proportion.

[0092] (iii) Dispersion stability test:

[0093] The present invention relates to a diflubenzuron·triclopyralid butoxyethyl ester dispersible oil suspension, which can be directly diluted with water and sprayed. Since plant oil dispersion media are insoluble in water, the active ingredients can only exert a stable efficacy after being fully emulsified and dispersed in water.

[0094] To ensure the efficacy of the product, the dispersion stability of the dispersible oil suspension was determined. The dispersion stability was tested according to the FAO standard (MT180) method and met the following requirements: At 30±2℃, the dispersible oil suspension was diluted with CIPAC standard water D at a mass ratio of 1:200 and stirred evenly. The solution was then placed in a graduated container for testing. Initial (0.5h) sediment volume and upper surface paste or oil were measured. Redispersibility after 2 hours was also measured: sediment volume and upper surface paste or oil. The results are shown in Table 4.

[0095] Table 4

[0096] .

[0097] As shown in the table above, the poor efficacy of the agents in Examples 4 and 5 was indeed due to poor dispersion stability. Although their wettability was good, the poor dispersion stability had a significant impact on the efficacy, thus reducing the overall efficacy. This demonstrates that the combination of dispersant and dispersion medium has a significant impact on the dispersion stability of the agent. (Based on Examples 1 and 4...) Figure 1 It can be seen that when soybean oil is used as the dispersion medium, the emulsifying dispersant is composed of HDB-D68T and 500# (the ratio of the two is 4:1), which can disperse the oil suspension with good dispersion stability.

[0098] As can be seen from Examples 2 and 5, when corn oil is used as the dispersion medium, the dispersion stability of the dispersible oil suspension is better when the emulsifying dispersant is composed of HDB-D68T, 500# and AEO5 (in a ratio of 10:2:3).

[0099] In summary, the wheat field herbicide composition provided by this invention, through the addition of synergistic adjuvants, significantly enhances the wetting properties of the dispersible oil suspension, increases crop absorption of the herbicide, and significantly improves the control efficacy of the herbicide composition. This wheat field herbicide composition can effectively reduce the amount of herbicide applied in the field, reducing the risk of weed resistance due to long-term use of the herbicide, and is of great significance for integrated pest management in the field.

[0100] The above embodiments illustrate and describe the basic principles, product features, and advantages of the method of the present invention. The present invention is not limited to the above embodiments; various changes and modifications can be made without departing from the scope of the invention, and all such changes are claimed to be included within the scope of protection.

Claims

1. A dispersible oil suspension for weed control in wheat fields, comprising a herbicidal active ingredient and adjuvants, characterized in that, The herbicidal active ingredients are diflubenzuron and triclopyralid butoxyethyl ester; the adjuvant is composed of an emulsifying dispersant, a synergist, a thickener, an antifreeze agent, and a dispersion medium; wherein the synergist is composed of lauryl alcohol and panthenol, and the weight ratio of lauryl alcohol to panthenol is 1:5-5:1; the weight fraction of the synergist is 5-10%; the mass ratio of diflubenzuron to triclopyralid butoxyethyl ester is 1-6:20-40.

2. The wheat field weed control dispersible oil suspension as described in claim 1, characterized in that: The emulsifying dispersant is selected from one or more of the following: anionic / nonionic modified cationic polymer mixtures, polyoxypropylene / polyoxyethylene block copolymers, fatty alcohol polyoxyethylene ethers, and calcium dodecylbenzenesulfonate.

3. The wheat field weed control dispersible oil suspension as described in claim 2, characterized in that: The anionic nonionic modified cationic polymer mixture is selected from HDB-D68T; the polyoxypropylene polyoxyethylene block copolymer is selected from 1601; the fatty alcohol polyoxyethylene ether is selected from AEO-5; and the calcium dodecylbenzenesulfonate is selected from 500#.

4. The wheat field weed control dispersible oil suspension as described in claim 1, characterized in that: The dispersion medium is selected from one or more of methylated vegetable oil, soybean oil, rapeseed oil, and corn oil.

5. The wheat field weed control dispersible oil suspension as described in claim 1, characterized in that: The thickener is at least one of organic bentonite and precipitated silica; the antifreeze is urea.

6. The wheat field weed control dispersible oil suspension as described in claim 1, characterized in that: The weight ratio of lauryl alcohol to panthenol is 1:3-3:

1.

7. The wheat field weed control dispersible oil suspension as described in claim 1, characterized in that: The content of the herbicidal active ingredients, diflubenzuron and triclopyralid butoxyethyl ester, is 20%-80%.

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