Multi-element compound herbicide composition for sorghum field and preparation method of multi-element compound herbicide composition

Abstract

According to the multi-element compound herbicide composition for the sorghum field and the preparation method of the multi-element compound herbicide composition, terbuthylazine, mesotrione, isoxaflutole and cyclopropanesulfonamide are compounded to prepare water dispersible granules, and the multi-element compound herbicide composition for the sorghum field is good in prevention and treatment effect, stable in physical and chemical performance, not prone to decomposition and deterioration, good in herbicide effect, good in herbicide effect, good in herbicide effect and long in service life. The suspension rate reaches 96% or above; in the use process, the water dispersible granule only needs to be dispersed once, the use process is simple, and the water dispersible granule is a granular solid, is good in flowability, does not stick to the wall after being poured, and does not remain in a packaging container to form secondary pollution.

Description

Technical Field

[0001] This invention belongs to the field of pesticide and herbicide technology, specifically relating to a multi-component compound herbicide composition for sorghum fields and its preparation method. Background Technology

[0002] Sorghum, a cereal crop with a long history in my country, has seen a decline in its edible role in modern life, but it still plays an indispensable role in some regions. It serves as a condiment, a high-quality feed crop, and an important raw material for starch, brewing, and alcohol production. Thanks to its excellent drought resistance, flood tolerance, and salt and alkali tolerance, sorghum is highly adaptable. China's sorghum industry is divided into four major regions: early-maturing sorghum region, late-maturing sorghum region, spring-summer sorghum region, and southern sorghum region. Sorghum fields are commonly infested with a variety of weeds, including barnyard grass, foxtail grass, crabgrass, tiger tail grass, creeping bentgrass, and wild oats. Because sorghum seedlings are smaller and grow more slowly than corn seedlings, these weeds pose a particularly significant threat during the seedling stage. Currently, commonly used herbicides include triazine and phenoxycarboxylic acid herbicides, which can be applied pre-emergence or post-emergence using positional and temporal differences. Because sorghum is sown at a relatively shallow depth, these herbicides can easily negatively impact seed germination and even cause phytotoxicity. Weather conditions are particularly crucial in the cultivation of sorghum for brewing. If continuous rainy weather leads to a sudden drop in temperature, the seed germination rate will be severely affected. Currently, there are no suitable post-emergence herbicides for sorghum fields in China.

[0003] Mesotrione is effective against annual broadleaf weeds and some grassy weeds such as velvetleaf, amaranth, lambsquarters, knotweed, barnyard grass, and crabgrass. However, it is less effective against ironweed and some grassy weeds. Terbutaline is a selective systemic herbicide, primarily absorbed through the plant roots. It can be applied pre-emergence or post-emergence, and its residual effect in the soil lasts 3-10 weeks. It has a broad spectrum of weed control, effective against most annual broadleaf and grassy weeds. It is mainly used for corn and sorghum, and is an excellent alternative to atrazine. Terbutaline has a significantly shorter residual time in the soil, reducing environmental pollution and the risk of phytotoxicity to subsequent crops.

[0004] Isoxazolidinone is widely used for pre- or early post-emergence control of crops such as corn, sugarcane, sugar beets, fruits and vegetables, cotton, and cereals. It can control more than 50 kinds of grass weeds (such as crabgrass, goosegrass, foxtail, barnyard grass, barnyard grass, large foxtail, and foxtail grass) and broadleaf weeds (such as velvetleaf, cocklebur, spiny amaranth, lambsquarters, willow-leaved spiny knotweed, kochia, mustard, purslane, chickweed, sessile grass, cocklebur, iron amaranth, water thorn, sorrel leaf knotweed, black nightshade, speedwell, etc.), but it is prone to causing phytotoxicity. Summary of the Invention

[0005] The present application aims at providing a sorghum field multi-component compounded herbicide composition based on the prior art, which is prepared by compounding terbuthylazine, mesotrione, isoxaflutole and cyprosulfamide into water dispersible granules, has good control effect, stable physical and chemical properties, is not easy to decompose and deteriorate, has a suspension rate of more than 96%, needs only one dispersion in the process of use, has simple use process, is in the form of granular solid, has good fluidity, is not sticky after pouring, and cannot form secondary pollution in the packaging container.

[0006] The second object of the present application is to provide a preparation method of the above-mentioned sorghum field multi-component compounded herbicide composition.

[0007] The technical scheme of the present application is as follows:

[0008] The present application provides a sorghum field multi-component compounded herbicide composition, which is water dispersible granules and comprises the following components in parts by weight: 10-50 parts of terbuthylazine, 5-20 parts of mesotrione, 2-15 parts of isoxaflutole, 2-15 parts of cyprosulfamide, 2-10 parts of polymaleic anhydride-acrylic acid polymer, 1-10 parts of naphthalenesulfonate formaldehyde condensate, 1-12 parts of sodium lignosulfonate, 1-10 parts of polyvinylpyrrolidone, 1-10 parts of fatty alcohol sulfonate and / or fatty alcohol sulfate, and 1-40 parts of filler; wherein the filler is sodium tripolyphosphate and / or corn starch.

[0009] The composition prepared by compounding terbuthylazine, mesotrione and isoxaflutole is rarely used in sorghum fields. Since mesotrione is a strong acid, the pH value of the prepared preparation on the market is below 3, and the pH value of terbuthylazine and isoxaflutole needs to be between 6 and 8 to be stable, so the matching synergy of the three raw materials needs to be solved when terbuthylazine, mesotrione and isoxaflutole are compounded, the herbicidal effect is increased, in addition, the addition of cyprosulfamide improves the safety of the product to crops, widens the application period, and reduces the phytotoxicity.

[0010] The present application provides a sorghum field multi-component compounded herbicide composition, which is water dispersible granules, and in the preparation process, terbuthylazine, mesotrione, isoxaflutole, cyprosulfamide, polymaleic anhydride-acrylic acid polymer, naphthalenesulfonate formaldehyde condensate, sodium lignosulfonate, polyvinylpyrrolidone, fatty alcohol sulfonate and / or fatty alcohol sulfate and filler are uniformly mixed, airflow crushing is carried out in the mixing process to prepare micro-powder with a particle size of 10-15 μm; the obtained micro-powder is kneaded with water, granulated, dried, and the water dispersible granules are obtained.

[0011] In the present application, the fatty alcohol sulfonate can be fatty alcohol sulfonate (Rhodia wet / p); the fatty alcohol sulfate can be fatty alcohol sulfate (K12).

[0012] In a preferred embodiment, the present application provides a sorghum field multi-ingredient compound herbicide composition, which is water dispersible granule, comprising the following components in parts by weight: terbuthylazine 30-40 parts, mesotrione 10-15 parts, isoxaflutole 5-10 parts, cyprosulfamide 5-10 parts, polymaleic anhydride-acrylic acid polymer 3-8 parts, naphthalene sulfonate formaldehyde condensate 1-7 parts, sodium lignosulfonate 2-10 parts, polyvinylpyrrolidone 1-7 parts, fatty alcohol sulfonate and / or fatty alcohol sulfate 1-5 parts, filler 3-35 parts.

[0013] In a more preferred embodiment, the present application provides a sorghum field multi-ingredient compound herbicide composition, which is water dispersible granule, comprising the following components in parts by weight: terbuthylazine 40 parts, mesotrione 15 parts, isoxaflutole 10 parts, cyprosulfamide 10 parts, polymaleic anhydride-acrylic acid polymer 4-6 parts, naphthalene sulfonate formaldehyde condensate 2-5 parts, sodium lignosulfonate 3-8 parts, polyvinylpyrrolidone 2-5 parts, fatty alcohol sulfonate 2-3 parts, sodium tripolyphosphate 4-6 parts.

[0014] In a particularly preferred embodiment, the present application provides a sorghum field multi-ingredient compound herbicide composition, which is water dispersible granule, comprising the following components in parts by weight: terbuthylazine 40 parts, mesotrione 15 parts, isoxaflutole 10 parts, cyprosulfamide 10 parts, polymaleic anhydride-acrylic acid polymer 5 parts, naphthalene sulfonate formaldehyde condensate 5 parts, sodium lignosulfonate 3 parts, polyvinylpyrrolidone 5 parts, fatty alcohol sulfonate 2 parts, sodium tripolyphosphate 5 parts.

[0015] In another more preferred embodiment, the present application provides a sorghum field multi-ingredient compound herbicide composition, which is water dispersible granule, comprising the following components in parts by weight: terbuthylazine 30 parts, mesotrione 10 parts, isoxaflutole 5 parts, cyprosulfamide 5 parts, polymaleic anhydride-acrylic acid polymer 4-6 parts, naphthalene sulfonate formaldehyde condensate 2-5 parts, sodium lignosulfonate 3-8 parts, polyvinylpyrrolidone 2-5 parts, fatty alcohol sulfate 2-3 parts, corn starch 24-26 parts, sodium tripolyphosphate 4-6 parts.

[0016] In another particularly preferred embodiment, the present application provides a sorghum field multi-ingredient compound herbicide composition, which is water dispersible granule, comprising the following components in parts by weight: terbuthylazine 30 parts, mesotrione 10 parts, isoxaflutole 5 parts, cyprosulfamide 5 parts, polymaleic anhydride-acrylic acid polymer 5 parts, naphthalene sulfonate formaldehyde condensate 2 parts, sodium lignosulfonate 8 parts, polyvinylpyrrolidone 2 parts, fatty alcohol sulfate 3 parts, corn starch 25 parts, sodium tripolyphosphate 5 parts.

[0017] The present application also provides a preparation method of the above-mentioned sorghum field multi-ingredient compound herbicide composition, comprising the following steps:

[0018] (1) the terbuthylazine, mesotrione, isoxaflutole, cyprosulfamide, polymaleic anhydride acrylic acid polymer, naphthalene sulfonate formaldehyde condensate, sodium lignosulfonate, polyvinyl pyrrolidone, fatty alcohol sulfonate and / or fatty alcohol sulfate and filler are mixed uniformly, and air flow crushing is carried out during the mixing to make the micro powder with a particle size of 10-15 μm;

[0019] (2) water is added to the micro powder obtained in step (1) and kneaded, then granulation is carried out, and the obtained wet granules are dried, thereby obtaining the water dispersible granules.

[0020] In a preferred embodiment, in step (1), the temperature during the crushing is 10-25℃, and the pressure is 0.8-1.0 MPa.

[0021] In a preferred embodiment, in step (2), the temperature during the granulation is 20-45℃.

[0022] In a preferred embodiment, in step (2), the particle size of the wet granules is 0.4-2.0 mm.

[0023] In a preferred embodiment, in step (2), the temperature during the drying is 50-85℃.

[0024] The application also provides a preparation method of the sorghum field multi-component compound herbicide composition, which comprises the following more detailed steps:

[0025] (1) the terbuthylazine, mesotrione, isoxaflutole, cyprosulfamide, polymaleic anhydride acrylic acid polymer, naphthalene sulfonate formaldehyde condensate, sodium lignosulfonate, polyvinyl pyrrolidone, fatty alcohol sulfonate and / or fatty alcohol sulfate and filler are mixed uniformly in a double helix mixer (I), air flow crushing is carried out during the mixing, the temperature during the crushing is 10-25℃, the pressure is 0.8-1.0 MPa, then the micro powder is collected by a cyclone separator and a cloth bag dust collector, and the micro powder is mixed again in a screw mixer (II) to obtain the uniform micro powder with a particle size of 10-15 μm;

[0026] (2) the micro powder obtained in step (1) is added to a kneader, 15-20% of water is added to the micro powder based on 100% of the total mass of the micro powder, the wet granules are obtained by using a granulator after kneading, the temperature during the granulation is 20-45℃, the particle size of the wet granules is 0.4-2.0 mm, the wet granules are dried at 50-85℃, the columnar uniform granules are obtained, the moisture content is controlled to be 1.0%, and the water dispersible granules are obtained.

[0027] The technical scheme of the application has the following advantages:

[0028] The present application provides a kind of sorghum field multi-component compounded herbicide composition, which is prepared by compounding terbuthylazine, mesotrione, isoxaflutole and cyprosulfamide into water dispersible granules, has good control effect, stable physical and chemical properties, is not easy to decompose and deteriorate, and the suspension rate reaches more than 96%; during use, only one dispersion is needed, and the use process is simple; the water dispersible granules are granular solids, have good fluidity, do not stick to the wall after pouring, and will not form secondary pollution by remaining in the packaging container. DETAILED DESCRIPTION

[0029] The present application can be better understood according to the following examples. However, those skilled in the art will readily understand that the content described in the examples is only for illustration of the present application and should not and will not limit the present application described in detail in the claims.

[0030] Example 1

[0031] A kind of sorghum field multi-component compounded herbicide composition, which is water dispersible granules, contains the following components by weight:

[0032]

[0033]

[0034] The preparation method of the above-mentioned sorghum field multi-component compounded herbicide composition includes the following steps:

[0035] (1) uniformly mix terbuthylazine, mesotrione, isoxaflutole, cyprosulfamide, polymaleic anhydride acrylic acid polymer, naphthalenesulfonate formaldehyde condensate, sodium lignosulfonate, fatty alcohol sulfonate, polyvinylpyrrolidone and filler (sodium tripolyphosphate) in a double-screw mixer (I), and perform air flow crushing in the mixing process, the temperature during crushing is 10-25℃, the pressure is 0.8-1.0 MPa, then collect by a cyclone separator and a bag-type dust collector, and mix again in a screw mixer (II) to obtain uniform micro powder, the particle size of the micro powder is 10-15 μm;

[0036] (2) add the micro powder obtained in step (1) to a kneader, add 15-20% water based on 100% of the total mass of the micro powder during kneading, and then perform granulation by a granulator after kneading, the temperature during granulation is 20-45℃, the particle size of the obtained wet granules is 0.4-2.0 mm, and the wet granules are dried at 50-85℃ to obtain columnar uniform granules, and the moisture content is controlled at 1.0%, thereby obtaining water dispersible granules.

[0037] Example 2

[0038] A kind of sorghum field multi-component compounded herbicide composition, which is water dispersible granules, contains the following components by weight:

[0039]

[0040] The preparation method of the sorghum field multi-component complex herbicide composition comprises the following steps:

[0041] (1) uniformly mix the terbuthylazine, mesotrione, isoxaflutole, cyprosulfamide, polymaleic anhydride-acrylic acid polymer, naphthalene sulfonate formaldehyde condensate, sodium lignosulfonate, polyvinyl pyrrolidone, fatty alcohol sulfate and fillers (corn starch and sodium tripolyphosphate) in a double helix mixer (I), perform air flow crushing in the process of mixing by using an air flow crusher, the temperature is 10-25°C and the pressure is 0.8-1.0 MPa during crushing, then collect by a cyclone separator and a cloth bag dust collector, and mix again in a spiral mixer (II) to obtain uniform micro powder, the particle size of the micro powder is 10-15 μm;

[0042] (2) add the micro powder obtained in step (1) to a kneader, add 15-20% water based on 100% of the total mass of the micro powder, perform granulation by using a granulator after kneading, the temperature is 20-45°C during granulation, the particle size of the obtained wet granules is 0.4-2.0 mm, dry the wet granules at 50-85°C to obtain columnar uniform granules, and control the moisture content to be 1.0%, thereby obtaining water dispersible granules.

[0043] Comparative Example 1

[0044] A sorghum field multi-component complex herbicide composition, which is water dispersible granules, comprises the following components by weight:

[0045]

[0046] The preparation method of the sorghum field multi-component complex herbicide composition comprises the following steps:

[0047] (1) uniformly mix the terbuthylazine, mesotrione, isoxaflutole, cyprosulfamide, polymaleic anhydride-acrylic acid polymer, naphthalene sulfonate formaldehyde condensate, sodium lignosulfonate, polyvinyl pyrrolidone, fatty alcohol sulfate and fillers (corn starch and sodium tripolyphosphate) in a double helix mixer (I), perform air flow crushing in the process of mixing by using an air flow crusher, the temperature is 10-25°C and the pressure is 0.8-1.0 MPa during crushing, then collect by a cyclone separator and a cloth bag dust collector, and mix again in a spiral mixer (II) to obtain uniform micro powder, the particle size of the micro powder is 10-15 μm;

[0048] (2) The micro-powder obtained in step (1) is added into a kneader, 15-20% water is added during kneading, and the kneaded product is granulated by using a granulator, the temperature during granulation is 20-45°C, the particle size of the obtained wet granules is 0.4-2.0 mm, the wet granules are dried at 50-85°C to obtain columnar uniform granules, and the moisture content is controlled at 1.0%, thus obtaining the water dispersible granules.

[0049] Comparative Example 2

[0050] A sorghum field multi-component compounded herbicide composition, which is a water dispersible granule, comprises the following components by weight:

[0051]

[0052] A preparation method of the above-mentioned sorghum field multi-component compounded herbicide composition, comprising the following steps:

[0053] (1) The terbuthylazine, mesotrione, isoxaflutole, polymaleic anhydride-acrylic acid polymer, naphthalene sulfonate formaldehyde condensate, sodium lignosulfonate, polyvinylpyrrolidone, fatty alcohol sulfonate and / or fatty alcohol sulfate, and filler are uniformly mixed in a double helix mixer (I), airflow pulverization is performed during the mixing by using an airflow pulverizer, the temperature during pulverization is 10-25°C, the pressure is 0.8-1.0 MPa, the product is collected by using a cyclone separator and a cloth bag dust collector, and the collected product is mixed again in a screw mixer (II) to obtain uniform micro-powder, the particle size of the micro-powder is 10-15 μm;

[0054] (2) The micro-powder obtained in step (1) is added into a kneader, 15-20% water is added during kneading, and the kneaded product is granulated by using a granulator, the temperature during granulation is 20-45°C, the particle size of the obtained wet granules is 0.4-2.0 mm, the wet granules are dried at 50-85°C to obtain columnar uniform granules, and the moisture content is controlled at 1.0%, thus obtaining the water dispersible granules.

[0055] Pharmacodynamic test:

[0056] The water dispersible granules prepared by compounding terbuthylazine, mesotrione, isoxaflutole and cyprosulfamide in the examples (Example 1 and Example 2 and Comparative Example 1 and Comparative Example 2) are tested for herbicidal effect on sorghum together with 500 g / l terbuthylazine water suspension concentrate (Comparative Example 1), 75% isoxaflutole water dispersible granules (Comparative Example 2) and 100 g / l mesotrione oil suspension concentrate (Comparative Example 3), and the specific test results are shown in Table 1.

[0057] Table 1 Herbicidal effect data

[0058]

[0059]

[0060] From Table 1, it can be seen that the water dispersible granules prepared in the examples of the present application have obvious synergistic function compared with the single agent products on the market, the herbicidal effect on gramineae is 40-50% higher, the herbicidal effect on broadleaf weeds is 40-50% higher, and it is safe to sorghum without phytotoxicity. The control examples 1 and 2 lack the component cyprosulfamide, and the herbicidal effect on gramineae and broadleaf weeds is obviously poorer, and it has phytotoxicity to wheat.

[0061] The water dispersible granules prepared by compounding terbuthylazine, mesotrione, isoxaflutole and cyprosulfamide in the examples (example 1, example 2) were subjected to physical and chemical stability test, and the specific test results are shown in Table 2.

[0062] Table 2: Physical and chemical stability test data

[0063]

[0064]

[0065] From Table 2, it can be seen that the water dispersible granules prepared in the examples of the present application have high suspension rate, and even under the condition of storage at 54℃, the suspension effect is not affected.

[0066] The above examples are only used to illustrate the technical solutions of the present application, but not limit it; although the present application has been described in detail with reference to the foregoing examples, it should be understood by those skilled in the art that the technical solutions recorded in the foregoing examples can still be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the examples of the present application.

Claims

1. A multi-component compound herbicide composition for sorghum fields, characterized in that, The composition is a water-dispersible granule, comprising the following components in parts by weight: 10-50 parts of terbutaline, 5-20 parts of nicosulfuron, 2-15 parts of isoxaflutole, 2-15 parts of cyclopropanesulfonamide, 2-10 parts of polymaleic anhydride acrylic polymer, 1-10 parts of naphthalene sulfonate formaldehyde condensate, 1-12 parts of sodium lignosulfonate, 1-10 parts of polyvinylpyrrolidone, 1-10 parts of fatty alcohol sulfonate and / or fatty alcohol sulfate, and 1-40 parts of filler; wherein the filler is sodium tripolyphosphate and / or corn starch.

2. The sorghum field polymeric complex herbicide composition according to claim 1, characterized by, In its preparation process, terbutaline, mesotrione, isoxazolidinone, cyclopropanesulfonamide, polymaleic anhydride acrylic polymer, naphthalene sulfonate formaldehyde condensate, sodium lignosulfonate, polyvinylpyrrolidone, fatty alcohol sulfonate and / or fatty alcohol sulfate and filler are mixed evenly. During the mixing process, air jet milling is carried out to produce micro powder with a particle size of 10-15μm. The obtained micro powder is kneaded with water, granulated, and dried to obtain water-dispersible granules.

3. The sorghum field polymeric complex herbicide composition according to claim 1, characterized in that, The water-dispersible granules comprise the following components in parts by weight: 30-40 parts of terbutaline, 10-15 parts of nicosulfuron, 5-10 parts of isoxaflutole, 5-10 parts of cyclopropanesulfonamide, 3-8 parts of polymaleic anhydride acrylic polymer, 1-7 parts of naphthalene sulfonate formaldehyde condensate, 2-10 parts of sodium lignosulfonate, 1-7 parts of polyvinylpyrrolidone, 1-5 parts of fatty alcohol sulfonate and / or fatty alcohol sulfate, and 3-35 parts of filler.

4. The sorghum field polymeric complex herbicide composition according to claim 3, characterized by, The water-dispersible granules comprise the following components in parts by weight: 40 parts terbutaline, 15 parts mesotrione, 10 parts isoxazoline, 10 parts cyclopropanesulfonamide, 4-6 parts polymaleic anhydride acrylic polymer, 2-5 parts naphthalene sulfonate formaldehyde condensate, 3-8 parts sodium lignosulfonate, 2-5 parts polyvinylpyrrolidone, 2-3 parts fatty alcohol sulfonate, and 4-6 parts sodium tripolyphosphate; preferably, 40 parts terbutaline, 15 parts mesotrione, 10 parts isoxazoline, 10 parts cyclopropanesulfonamide, 5 parts polymaleic anhydride acrylic polymer, 5 parts naphthalene sulfonate formaldehyde condensate, 3 parts sodium lignosulfonate, 5 parts polyvinylpyrrolidone, 2 parts fatty alcohol sulfonate, and 5 parts sodium tripolyphosphate.

5. The sorghum field polymeric complex herbicide composition according to claim 3, characterized by, The water-dispersible granules comprise the following components in parts by weight: 30 parts terbutaline, 10 parts mesotrione, 5 parts isoxazoline, 5 parts cyclopropanesulfonamide, 4-6 parts polymaleic anhydride acrylic polymer, 2-5 parts naphthalene sulfonate formaldehyde condensate, 3-8 parts sodium lignosulfonate, 2-5 parts polyvinylpyrrolidone, 2-3 parts fatty alcohol sulfate, 24-26 parts corn starch, and 4-6 parts sodium tripolyphosphate; preferably, 30 parts terbutaline, 10 parts mesotrione, 5 parts isoxazoline, 5 parts cyclopropanesulfonamide, 5 parts polymaleic anhydride acrylic polymer, 2 parts naphthalene sulfonate formaldehyde condensate, 8 parts sodium lignosulfonate, 2 parts polyvinylpyrrolidone, 3 parts fatty alcohol sulfate, 25 parts corn starch, and 5 parts sodium tripolyphosphate.

6. The method of preparing the sorghum field multi-ingredient herbicidal composition according to claim 1, characterized by, Includes the following steps: (1) The technical tin, the nitro-sulfonamide, the isoxazole grass ketone, the ring propyl sulfonamide, the polymer maleic anhydride acrylic acid polymer, the naphthalene sulfonate formaldehyde condensate, the sodium lignosulfonate, the polyvinyl pyrrolidone, the fatty alcohol sulfonate and / or the fatty alcohol sulfate and the filler are mixed uniformly, and the airflow is crushed in the process of mixing to make the particle size of the micro powder 10-15 μm; (2) After adding water to the micro powder obtained in step (1) and kneading, granulation is carried out, and the obtained wet granules are dried, thereby obtaining the water dispersion granules.

7. The method of claim 6, wherein the sorghum field multi-ingredient herbicide composition is prepared by mixing the herbicide and the surfactant. In step (1), the temperature is 10-25℃ and the pressure is 0.8-1.0 MPa during crushing.

8. The method of claim 6, wherein the sorghum field multi-ingredient herbicide composition is prepared by mixing the herbicide and the surfactant. In step (2), the temperature is 20-45℃ during granulation.

9. The method of claim 6, wherein the sorghum field multi-ingredient herbicide composition is prepared by mixing the herbicide and the surfactant. In step (2), the particle size of the wet granules is 0.4-2.0 mm.

10. The method of claim 6, wherein the sorghum field multi-ingredient herbicidal composition is prepared by mixing the herbicides and the surfactant. In step (2), the temperature is 50-85℃ during drying.

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