Oxadiazon-glyphosate wettable powder and preparation method thereof

Abstract

The invention provides glyphosate and oxadiazon wettable powder and a preparation method of the glyphosate and oxadiazon wettable powder. The glyphosate and oxadiazon wettable powder is prepared from the following components: 5.3 percent to 10.5 percent of oxadiazon, 46.0 percent to 51.8 percent of ammonium glyphosate, 5 percent to 10 percent of an auxiliary agent and the balance of filler. The preparation method comprises the following steps: metering the raw materials, uniformly mixing, carrying out air jet pulverization, and uniformly mixing to obtain the finished product. The glyphosate-oxadiazon wettable powder prepared by the invention is resistant to thermal storage, the effective components are not easy to decompose, and the quality is stable. In order to solve the problem that resistant weeds such as goosegrass herb and horseweed herb are difficult to remove, oxadiazon and glyphosate are compounded to form a dual-action mechanism, the resistant weeds can be comprehensively prevented and removed, and the weeding effect is more remarkable.

Description

Technical Field

[0001] The invention discloses an oxadiazon-glyphosate wettable powder and a preparation method thereof, belonging to the field of herbicides. Background Art

[0002] Oxadiazon is a contact pre- and post-emergence herbicide used to control a variety of annual monocotyledonous and dicotyledonous weeds. It acts primarily through absorption by weed shoots, stems, and leaves, and exhibits excellent herbicidal activity in the presence of light. It is particularly sensitive to weeds in the budding stage. Once weeds germinate, the growth of the bud sheath is inhibited, causing rapid tissue decay and weed death. It is used to control annual grass and broadleaf weeds such as barnyard grass, clematis chinensis, paspalum, Cyperus diversifolia, sedge tongue grass, sedge knotweed, sedge grass, and guava grass in rice paddies, soybean fields, cotton fields, sugarcane fields, and orchards. It also has excellent control effects on weeds in the Amaranthaceae, Chenopodiaceae, Euphorbiaceae, Oxalis, and Activelaceae families.

[0003] Glyphosate is a non-selective, residue-free herbicide that is highly effective against perennial rooted weeds. It is widely used in rubber, mulberry, tea, orchards, and sugarcane fields. It primarily inhibits the enzyme enolpyruvylshikimate synthase in plants, thereby inhibiting the conversion of shikimate to phenylalanine, tyrosine, and tryptophan, disrupting protein synthesis and leading to plant death. Glyphosate is absorbed through the stems and leaves and then transported to various parts of the plant. It can control over 40 plant families, including monocots and dicots, annuals and perennials, herbs, and shrubs. It is also effective against annual weeds such as barnyardgrass, foxtail millet, goosegrass, crabgrass, cocklebur, quinoa, chickweed, and cleavers.

[0004] The combination of glyphosate and oxadiazon can achieve the dual effects of two herbicides with different mechanisms of action on weeds. First, it can expand the weed control spectrum, and second, it can improve the control effect on certain glyphosate-resistant weeds. Summary of the Invention

[0005] In order to achieve the above object, the present invention provides an oxadiazon-glyphosate wettable agent, which is composed of the following raw materials, calculated by weight percentage: 5.3%-10.5% of oxadiazon, 46.0%-51.8% of glyphosate ammonium salt, 5%-10% of adjuvant, and 100% of filler.

[0006] The auxiliary agent includes a dispersant, and the dispersant is selected from one or more of calcium dodecylbenzenesulfonate, sodium dodecylbenzenesulfonate, sodium ligninsulfonate, calcium ligninsulfonate, polycarboxylates, phosphates, succinates, naphthalenesulfonates, benzenesulfonates, sulfonates, sulfates, polyoxyethylene esters, polyoxyethylene ethers, and NNO.

[0007] The auxiliary agent also includes a wetting agent, which is selected from any one or more of lapping powder, sodium lauryl sulfate, Morwet EFW, Morwet D425, TERWET 1004, alkylphenol polyoxyethylene ethers, sulfates, sodium dioctyl sulfosuccinate, sodium dibutylnaphthalene sulfonate, SOPA, sodium petroleum sulfonate, sodium lauryl sulfate, and soap beans.

[0008] The auxiliary agent also includes a stabilizer, and the stabilizer is selected from one or more of EDTA, sodium tripolyphosphate, BHT, and anhydrous sodium sulfide.

[0009] The auxiliary agent also includes a synergist, and the synergist is selected from one or more of the group consisting of tea saponin, saponin, and phloxanthrin.

[0010] The auxiliary agent is a mixture of a dispersant, a wetting agent, a stabilizer and a synergist, wherein the addition amounts of the dispersant, the wetting agent, the stabilizer and the synergist are 1-2 wt %, 1-2 wt %, 0.5-2 wt % and 0.5-2 wt %.

[0011] The auxiliary agent described in the preferred embodiment is a mixture of a dispersant, a wetting agent, a stabilizer and a synergist, wherein the added amounts of the dispersant, the wetting agent, the stabilizer and the synergist are 1.5 wt %, 1.5 wt %, 1 wt % and 1 wt %.

[0012] Preferably, the filler is selected from any one or more of white carbon black, kaolin, diatomaceous earth, bentonite, light calcium carbonate, perlite powder, silica gel, talc, and calcium silicate.

[0013] Preferably, the mass fraction of glyphosate in the oxadiazon-glyphosate soluble agent is 40-45%, and the mass fraction of oxadiazon is 5-10%. The present invention also provides a method for preparing an oxadiazon-glyphosate soluble solution, comprising the following steps: (1) Glyphosate ammonium salt, oxadiazon technical, adjuvant and filler are measured separately and transported to the mixing port of the mixer; (2) Open the mixer’s feed port cover and add filler, glyphosate ammonium salt, oxadiazon technical, and adjuvant into the mixer in sequence; (3) Turn on the mixer and mix for 30-60 minutes; (4) Turn on the power of the air flow mill and transfer the mixed materials to the air flow mill through the feeding system to obtain fine materials through air flow milling.

[0014] (5) The crushed fine material is fed into the mixer through the feeding system, mixed for 30-60 minutes, and then unloaded and packaged to obtain the finished product.

[0015] The beneficial effects of the present invention are: The oxadiazon-glyphosate wettable powder obtained in this invention has strong adhesion and penetration on plant surfaces, enhancing the synergistic effect of oxadiazon and glyphosate, and improving weed absorption efficiency. For difficult-to-control resistant weeds such as goosegrass and fleabane, the combination of oxadiazon and glyphosate creates a dual action mechanism, providing comprehensive control of resistant weeds and achieving more significant weed control.

[0016] The oxadiazon-glyphosate wettable powder obtained by the invention is heat-resistant and storage-resistant, the effective components are not easily decomposed and the quality is stable. DETAILED DESCRIPTION

[0017] The technical solutions of the present invention are further explained below with reference to specific embodiments. It is worth noting that the following embodiments are only preferred embodiments of the present invention and should not be construed as limiting the present invention. The scope of protection of the present invention shall be determined by the claims. Any modifications or substitutions made to the technical solutions of the present invention by those skilled in the art without creative effort shall fall within the scope of protection of the present invention.

[0018] The present invention will be further described below with reference to specific examples, but the present invention is not limited thereto.

[0019] Example 1 A oxadiazon-glyphosate wettable powder comprises the following components in parts by weight: 46.0% glyphosate ammonium salt, 5.3% oxadiazon, 5% adjuvant (containing 1.5% sodium dodecylbenzenesulfonate, 1.5% sodium lauryl sulfate, 1.0% EDTA, and 1.0% tea saponin), and white carbon black making up 100%.

[0020] Preparation method: (1) Glyphosate ammonium salt, oxadiazon technical, adjuvant and filler are measured separately and transported to the mixing port of the mixer; (2) Open the mixer’s feed port cover and add silica, glyphosate ammonium salt, oxadiazon technical, and adjuvant into the mixer in sequence; (3) Turn on the mixer and stir for 30 minutes; (4) Turn on the power of the air flow mill and transfer the mixed materials to the air flow mill through the feeding system to obtain fine materials through air flow milling.

[0021] (5) The crushed fine material is fed into the mixer through the feeding system, mixed for 30 minutes, and then unloaded and packaged to obtain the finished product.

[0022] Example 2 A oxadiazon-glyphosate wettable powder comprises the following components in parts by weight: 46.0% glyphosate ammonium salt, 5.3% oxadiazon, 5% adjuvant (containing 1.5% sodium dodecylbenzenesulfonate, 1.5% sodium lauryl sulfate, 1.0% EDTA, and 1.0% saponin), and white carbon black making up 100%.

[0023] Preparation method: same as Example 1.

[0024] Example 3 A oxadiazon-glyphosate wettable powder comprises the following components in parts by weight: 46.0% glyphosate ammonium salt, 5.3% oxadiazon, 5% adjuvant (containing 1.5% sodium dodecylbenzenesulfonate, 1.5% sodium lauryl sulfate, 1.0% EDTA, and 1.0% chrysoglossin), and white carbon black making up 100%.

[0025] Preparation method: same as Example 1.

[0026] Example 4 A oxadiazon-glyphosate wettable powder comprises the following components in parts by weight: 46.0% glyphosate ammonium salt, 5.3% oxadiazon, 5% adjuvant (containing 1.5% sodium dodecylbenzenesulfonate, 1.5% sodium lauryl sulfate, 1.0% sodium tripolyphosphate, and 1.0% tea saponin), and white carbon black making up 100%.

[0027] Preparation method: same as Example 1.

[0028] Example 5 A oxadiazon-glyphosate wettable powder comprises the following components in parts by weight: 46.0% glyphosate ammonium salt, 5.3% oxadiazon, 5% adjuvant (containing 1.5% sodium dodecylbenzenesulfonate, 1.5% sodium lauryl sulfate, 1.0% sodium tripolyphosphate, and 1.0% saponin), and white carbon black making up 100%.

[0029] Preparation method: same as Example 1.

[0030] Example 6 A oxadiazon-glyphosate wettable powder comprises the following components in parts by weight: 46.0% glyphosate ammonium salt, 5.3% oxadiazon, 5% adjuvant (containing 1.5% sodium dodecylbenzenesulfonate, 1.5% sodium lauryl sulfate, 1.0% sodium tripolyphosphate, and 1.0% chrysoglossin), and white carbon black making up 100%.

[0031] Preparation method: same as Example 1.

[0032] Example 7 A oxadiazon-glyphosate wettable powder comprises the following components in parts by weight: 46.0% glyphosate ammonium salt, 5.3% oxadiazon, 5% adjuvant (containing 1.5% sodium dodecylbenzenesulfonate, 1.5% sodium lauryl sulfate, 1.0% BHT, and 1.0% tea saponin), and white carbon black making up 100%.

[0033] Preparation method: same as Example 1.

[0034] Example 8 An oxadiazon glyphosate wettable powder, the weight parts of each component are as follows: glyphosate ammonium salt 46.0%, oxadiazon 5.3%, auxiliary agent 5% (containing sodium dodecyl benzene sulfonate 1.5, sodium lauryl sulfate 1.5%, BHT 1.0%, soap husk 1.0%), white carbon black to make up 100%.

[0035] Preparation method: same as example 1.

[0036] Example 9 An oxadiazon glyphosate wettable powder, the weight parts of each component are as follows: glyphosate ammonium salt 46.0%, oxadiazon 5.3%, auxiliary agent 5% (containing sodium dodecyl benzene sulfonate 1.5, sodium lauryl sulfate 1.5%, BHT 1.0%, Huangpi wood glycoside 1.0%), white carbon black to make up 100%.

[0037] Preparation method: same as example 1.

[0038] Example 10 An oxadiazon glyphosate wettable powder, the weight parts of each component are as follows: glyphosate ammonium salt 46.0%, oxadiazon 5.3%, auxiliary agent 5% (containing sodium dodecyl benzene sulfonate 1.5, sodium lauryl sulfate 1.5%, anhydrous sodium sulfide 1.0%, tea saponin 1.0%), white carbon black to make up 100%.

[0039] Preparation method: same as example 1.

[0040] Example 11 An oxadiazon glyphosate wettable powder, the weight parts of each component are as follows: glyphosate ammonium salt 46.0%, oxadiazon 5.3%, auxiliary agent 5% (containing sodium dodecyl benzene sulfonate 1.5, sodium lauryl sulfate 1.5%, anhydrous sodium sulfide 1.0%, soap husk 1.0%), white carbon black to make up 100%.

[0041] Preparation method: same as example 1.

[0042] Example 12 An oxadiazon glyphosate wettable powder, the weight parts of each component are as follows: glyphosate ammonium salt 46.0%, oxadiazon 5.3%, auxiliary agent 5% (containing sodium dodecyl benzene sulfonate 1.5, sodium lauryl sulfate 1.5%, anhydrous sodium sulfide 1.0%, Huangpi wood glycoside 1.0%), white carbon black to make up 100%.

[0043] Preparation method: same as example 1.

[0044] Example 13 A oxadiazon-glyphosate wettable powder comprises the following components in parts by weight: 46.0% glyphosate ammonium salt, 5.3% oxadiazon, 5% adjuvant (containing 1.0% sodium lignin sulfonate, 1.5% Morwet EFW, 1.5% EDTA, and 1.0% tea saponin), and white carbon black to make up 100%.

[0045] Preparation method: same as Example 1.

[0046] Example 14 A oxadiazon-glyphosate wettable powder comprises the following components in parts by weight: 46.0% glyphosate ammonium salt, 5.3% oxadiazon, 5% adjuvant (containing 1.0% sodium lignin sulfonate, 1.5% Morwet EFW, 1.5% EDTA, and 1.0% saponin), and white carbon black to make up 100%.

[0047] Preparation method: same as Example 1.

[0048] Example 15 A oxadiazon-glyphosate wettable powder comprises the following components in parts by weight: 46.0% glyphosate ammonium salt, 5.3% oxadiazon, 5% adjuvant (containing 1.0% sodium lignin sulfonate, 1.5% Morwet EFW, 1.5% EDTA, and 1.0% chrysoglossin), and white carbon black to make up 100%.

[0049] Preparation method: same as Example 1.

[0050] Example 16 A oxadiazon-glyphosate wettable powder comprises the following components in parts by weight: 46.0% glyphosate ammonium salt, 5.3% oxadiazon, 5% adjuvant (containing 1.0% sodium lignin sulfonate, 1.5% Morwet EFW, 1.5% sodium tripolyphosphate, and 1.0% tea saponin), and white carbon black to make up 100%.

[0051] Preparation method: same as Example 1.

[0052] Example 17 A oxadiazon-glyphosate wettable powder comprises the following components in parts by weight: 46.0% glyphosate ammonium salt, 5.3% oxadiazon, 5% adjuvant (containing 1.0% sodium lignin sulfonate, 1.5% Morwet EFW, 1.5% sodium tripolyphosphate, and 1.0% saponin), and white carbon black making up 100%.

[0053] Preparation method: same as Example 1.

[0054] Example 18 A oxadiazon-glyphosate wettable powder comprises the following components in parts by weight: 46.0% glyphosate ammonium salt, 5.3% oxadiazon, 5% adjuvant (containing 1.0% sodium lignin sulfonate, 1.5% Morwet EFW, 1.5% sodium tripolyphosphate, and 1.0% chrysoglossin), and white carbon black to make up 100%.

[0055] Preparation method: Same as Example 1.

[0056] Example 19 A oxadiazon-glyphosate wettable powder comprises the following components in parts by weight: 46.0% glyphosate ammonium salt, 5.3% oxadiazon, 5% adjuvant (containing 1.0% sodium lignin sulfonate, 1.5% Morwet EFW, 1.5% BHT, and 1.0% tea saponin), and white carbon black to make up 100%.

[0057] Preparation method: Same as Example 1.

[0058] Example 20 A oxadiazon-glyphosate wettable powder comprises the following components in parts by weight: 46.0% glyphosate ammonium salt, 5.3% oxadiazon, 5% adjuvant (containing 1.0% sodium lignin sulfonate, 1.5% Morwet EFW, 1.5% BHT, and 1.0% saponin), and white carbon black making up 100%.

[0059] Preparation method: Same as Example 1.

[0060] Example 21 A oxadiazon-glyphosate wettable powder comprises the following components in parts by weight: 46.0% glyphosate ammonium salt, 5.3% oxadiazon, 5% adjuvant (containing 1.0% sodium lignin sulfonate, 1.5% Morwet EFW, 1.5% BHT, and 1.0% chrysoglossin), and white carbon black to make up 100%.

[0061] Preparation method: Same as Example 1.

[0062] Example 22 A oxadiazon-glyphosate wettable powder comprises the following components in parts by weight: 46.0% glyphosate ammonium salt, 5.3% oxadiazon, 5% adjuvant (containing 1.0% sodium lignin sulfonate, 1.5% Morwet EFW, 1.5% anhydrous sodium sulfide, and 1.0% tea saponin), and white carbon black making up 100%.

[0063] Preparation method: Same as Example 1.

[0064] Example 23 A oxadiazon-glyphosate wettable powder comprises the following components in parts by weight: 46.0% glyphosate ammonium salt, 5.3% oxadiazon, 5% adjuvant (containing 1.0% sodium lignin sulfonate, 1.5% Morwet EFW, 1.5% anhydrous sodium sulfide, and 1.0% saponin), and white carbon black to make up 100%.

[0065] Preparation method: Same as Example 1.

[0066] Example 24 A oxadiazon-glyphosate wettable powder comprises the following components in parts by weight: 46.0% glyphosate ammonium salt, 5.3% oxadiazon, 5% adjuvant (containing 1.0% sodium lignin sulfonate, 1.5% Morwet EFW, 1.5% anhydrous sodium sulfide, and 1.0% chrysoglossin), and white carbon black to make up 100%.

[0067] Preparation method: Same as Example 1.

[0068] Comparative Example 1 A oxadiazon-glyphosate wettable powder comprises the following components in parts by weight: 46.0% glyphosate ammonium salt, 5.3% oxadiazon, 5% adjuvant (containing 2.0% sodium dodecylbenzenesulfonate, 2.0% sodium lauryl sulfate, and 1.0% EDTA), and white carbon black making up 100%.

[0069] Preparation method: Same as Example 1.

[0070] Comparative Example 2 A oxadiazon-glyphosate wettable powder comprises the following components in parts by weight: 46.0% glyphosate ammonium salt, 5.3% oxadiazon, 5% adjuvant (containing 2.0% sodium dodecylbenzenesulfonate, 2.0% sodium lauryl sulfate, and 1.0% sodium tripolyphosphate), and white carbon black making up 100%.

[0071] Preparation method: Same as Example 1.

[0072] Comparative Example 3 A oxadiazon-glyphosate wettable powder comprises the following components in parts by weight: 46.0% glyphosate ammonium salt, 5.3% oxadiazon, 5% adjuvant (containing 2.0% sodium dodecylbenzenesulfonate, 2.0% sodium lauryl sulfate, and 1.0% BHT), and white carbon black making up 100%.

[0073] Preparation method: Same as Example 1.

[0074] Comparative Example 4 A oxadiazon-glyphosate wettable powder comprises the following components in parts by weight: 46.0% glyphosate ammonium salt, 5.3% oxadiazon, 5% adjuvant (containing 1.5% sodium dodecylbenzenesulfonate, 1.5% sodium lauryl sulfate, and 1.0% anhydrous sodium sulfide), and white carbon black making up 100%.

[0075] Preparation method: same as Example 1.

[0076] Comparative Example 5 A oxadiazon-glyphosate wettable powder comprises the following components in parts by weight: 46.0% glyphosate ammonium salt, 5.3% oxadiazon, 5% adjuvant (containing 1.5% sodium lignin sulfonate, 2.0% Morwet EFW, and 1.0% EDTA), and white carbon black making up 100%.

[0077] Preparation method: add glyphosate ammonium salt, oxadiazon technical, adjuvant and filler into a mixer, start the mixer and stir, mix for 30-60 minutes, then put into a drying and grinding mill, dry and grind to obtain the finished product.

[0078] Comparative Example 6 A oxadiazon-glyphosate wettable powder comprises the following components in parts by weight: 46.0% glyphosate ammonium salt, 5.3% oxadiazon, 5% adjuvant (containing 1.5% sodium lignin sulfonate, 2.0% Morwet EFW, and 1.0% sodium tripolyphosphate), and white carbon black making up 100%.

[0079] Preparation method: same as Example 1.

[0080] Comparative Example 7 A oxadiazon-glyphosate wettable powder comprises the following components in parts by weight: 46.0% glyphosate ammonium salt, 5.3% oxadiazon, 5% adjuvant (containing 1.5% sodium lignin sulfonate, 2.0% Morwet EFW, and 1.0% BHT), and 100% white carbon black.

[0081] Preparation method: same as Example 1.

[0082] Comparative Example 8 A oxadiazon-glyphosate wettable powder comprises the following components in parts by weight: 46.0% glyphosate ammonium salt, 5.3% oxadiazon, 5% adjuvant (containing 1.5% sodium lignin sulfonate, 2.0% Morwet EFW, and 1.5% anhydrous sodium sulfide), and white carbon black to make up 100%.

[0083] Preparation method: same as Example 1.

[0084] Example 25 The oxadiazon·glyphosate wettable powder prepared from the above examples and comparative examples was subjected to index detection according to the relevant national standard methods such as GB / T 5451-2001, GB / T 14825-2023, GB / T 22173-2021, GB / T 12686-2017, GB / T 19136-2021, and the like, and the relevant performance data are shown in Table 1.

[0085] Table 1 Quality detection results of oxadiazon·glyphosate wettable powder

[0086] As shown in Table 1, the decomposition rates of glyphosate and oxadiazon of the oxadiazon·glyphosate wettable powder prepared in Examples 1-9 and Examples 13-21 were both less than 5% after heat storage, and the flowability was good, no caking occurred, and the quality was stable. In Comparative Examples 1-8, no synergist was used, and the oxadiazon·glyphosate wettable powder prepared in Comparative Examples 4 and 8 showed caking after heat storage, and the decomposition rates of glyphosate and oxadiazon were both higher than 5%. The oxadiazon·glyphosate wettable powder prepared in Comparative Examples 1-3 and Comparative Examples 5-7 had good flowability and no caking after heat storage, and the decomposition rates of glyphosate and oxadiazon were both less than 5%, but the stability was not as good as that of Examples 1-9 and Examples 13-21.

[0087] Example 26 The oxadiazon·glyphosate wettable powder prepared in Examples 1-9, Examples 13-21, and Comparative Examples 1-3 and Comparative Examples 5-7 was applied to non-cultivated land for weed control, and the control agent was 50% glyphosate soluble powder (produced by Hubei Taisheng Chemical Co., Ltd.), and the main weeds in the field were common weeds such as barnyard grass, crabgrass, Chinese alpine milkweed, and little mallow, and the stem and leaf spraying method was used for pesticide treatment, and the control effect was investigated 14 days after treatment, as shown in Table 2.

[0088] Table 2 Control effect of oxadiazon·glyphosate wettable powder on non-cultivated land weeds

[0089] The results are shown in Table 2. The oxadiazon-glyphosate wettable powders prepared in Examples 1-9, Examples 13-21, and Comparative Examples 1-3 and Comparative Examples 5-7 used half the active ingredient dosage of the 50% glyphosate soluble powder, yet all exhibited superior overall weed control efficacy compared to the 50% glyphosate soluble powder. Comparative Examples 1-3 and Comparative Examples 5-7, which did not use a synergist, showed a slow onset of herbicidal effect 14 days after application, resulting in incomplete weed control. These results demonstrate that the oxadiazon-glyphosate wettable powders prepared in Examples 1-9 and Examples 13-21 achieved faster and more thorough weed control than glyphosate alone, demonstrating that the combination of oxadiazon and glyphosate can achieve synergistic weed control.

Claims

1. An oxadiazon-glyphosate wettable powder, characterized in that: The invention comprises the following components: oxadiazon 5.3%-10.5%, glyphosate ammonium salt 46.0%-51.8%, adjuvant 5%-10%, and filler 100%.

2. The oxadiazon-glyphosate wettable powder according to claim 1, wherein: The composition comprises the following components: 46.0% of glyphosate ammonium salt, 5.3% of oxadiazon, 5% of adjuvant, and 100% of filler.

3. The oxadiazon-glyphosate wettable powder according to claim 1, wherein: The filler is selected from any one or more of white carbon black, kaolin, diatomaceous earth, bentonite, light calcium carbonate, perlite powder, silica gel, talc, and calcium silicate.

4. The oxadiazon-glyphosate wettable powder according to claim 2, wherein: The auxiliary agent includes a dispersant, and the dispersant is selected from one or more of calcium dodecylbenzenesulfonate, sodium dodecylbenzenesulfonate, sodium ligninsulfonate, calcium ligninsulfonate, polycarboxylates, phosphates, succinates, naphthalenesulfonates, benzenesulfonates, sulfonates, sulfates, polyoxyethylene esters, polyoxyethylene ethers, and NNO.

5. The oxadiazon-glyphosate wettable powder according to claim 2, wherein: The auxiliary agent includes a wetting agent, and the wetting agent is selected from any one or more of lapping powder, sodium lauryl sulfate, Morwet EFW, Morwet D425, TERWET1004, alkylphenol polyoxyethylene ethers, sulfates, sodium dioctyl sulfosuccinate, sodium dibutylnaphthalene sulfonate, SOPA, sodium petroleum sulfonate, sodium lauryl sulfate, and soap beans.

6. The oxadiazon-glyphosate wettable powder according to claim 2, characterized in that: The auxiliary agent includes a stabilizer, and the stabilizer is selected from one or more of EDTA, sodium tripolyphosphate, BHT, and anhydrous sodium sulfide.

7. The oxadiazon-glyphosate wettable powder according to claim 2, wherein: The auxiliary agent includes a synergist, and the synergist is selected from one or more of the group consisting of tea saponin, saponin, and chrysanthemin.

8. The oxadiazon-glyphosate wettable powder according to any one of claims 4 to 7, characterized in that: The auxiliary agent is a mixture of a dispersant, a wetting agent, a stabilizer and a synergist, wherein the addition amounts of the dispersant, the wetting agent, the stabilizer and the synergist are 1-2 wt %, 1-2 wt %, 0.5-2 wt % and 0.5-2 wt %.

9. The oxadiazon-glyphosate wettable powder according to claim 8, characterized in that: The auxiliary agent is a mixture of a dispersant, a wetting agent, a stabilizer and a synergist, wherein the addition amounts of the dispersant, the wetting agent, the stabilizer and the synergist are 1.5 wt %, 1.5 wt %, 1 wt % and 1 wt %.

10. A method for preparing an oxadiazon-glyphosate wettable powder according to claims 1-9, characterized in that: The steps include: (1) Glyphosate ammonium salt, oxadiazon technical, adjuvant and filler are measured separately and transported to the mixing port of the mixer; (2) Open the mixer’s feed port cover and add filler, glyphosate ammonium salt, oxadiazon technical, and adjuvant into the mixer in sequence; (3) Turn on the mixer and mix for 30-60 minutes; (4) Turn on the power of the air flow mill and transfer the mixed materials to the air flow mill through the feeding system to obtain fine materials through air flow milling. (5) The crushed fine material is fed into the mixer through the feeding system, mixed for 30-60 minutes, and then unloaded and packaged to obtain the finished product.

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