Multi-element compound water dispersible granule for soybean field and preparation method of multi-element compound water dispersible granule

Abstract

The invention provides a soybean field multi-element compound water dispersible granule and a preparation method thereof, the water dispersible granule is prepared by compounding flufenacet and metribuzin, the control effect is good, the physical and chemical properties are stable, the water dispersible granule is not easy to decompose and deteriorate to generate phytotoxicity, and the suspension rate reaches more than 95%; 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 water-dispersible granule for soybean fields and its preparation method. Background Technology

[0002] Fluthiamethoxam is an older herbicide compound developed by Bayer in 1998, with its patent expiring in 2009. Fluthiamethoxam possesses excellent biological activity and a unique application method, exhibiting higher activity than benzylthiamethoxam and a broad crop application spectrum. Although a niche product, fluthiamethoxam has promising market prospects due to its excellent biological activity and unique application method. As a pre-emergence or post-emergence early-stage herbicide, fluthiamethoxam is mainly used domestically as a pre-emergence herbicide in wheat and corn fields, but its use in soybean fields is virtually unregistered.

[0003] Metfluthrin is a tricyclic thiazole herbicide with a broad spectrum of activity against absorbable herbicides. It can be used as a pre-emergence or post-emergence treatment, applied as a soil treatment before or after sowing, with appropriate soil moisture to facilitate root absorption. If the soil is dry, it should be lightly mixed into the soil after application. As a post-emergence treatment, its weed-control effect is more significant, and the dosage should be reduced accordingly; otherwise, it may cause phytotoxicity to broadleaf crops. Due to the poor herbicide tolerance and safety of soybean seedlings, metfluthrin is only suitable for pre-emergence treatment in soybeans. The combined application of fluthiamethoxam and metfluthrin is rarely used in soybean fields.

[0004] Currently, the common formulations of metribuzin herbicides are 70% wettable powder and 70% water-dispersible granules, while the formulation of fluthiamethoxam herbicides is 30-40% suspension concentrate. However, because fluthiamethoxam has a melting point of 75℃, fluthiamethoxam suspension concentrate is prone to clumping and layering, has poor stability, is inconvenient to use, and reduces weeding efficiency; there are basically no compound water-dispersible granules for either of these. Summary of the Invention

[0005] The purpose of this invention is to provide a multi-component water-dispersible granule for soybean fields, based on existing technology. This water-dispersible granule is made by compounding fluthiamethoxam and metribuzin. It has good control effect, stable physical and chemical properties, and is not easily decomposed or deteriorated to cause phytotoxicity. The suspension rate reaches more than 95%. In the process of use, only one dispersion is required, and the use process is simple. The water-dispersible granule is a granular solid with good flowability. After pouring, it does not stick to the wall and will not leave residue in the packaging container to cause secondary pollution.

[0006] Another object of the present invention is to provide a method for preparing the above-mentioned multi-component water-dispersible granules for soybean fields.

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

[0008] A multi-component water-dispersible granule for soybean fields is formulated from fluthiamethoxam and metribuzin, comprising the following components in parts by weight: 20-55 parts fluthiamethoxam, 5-20 parts metribuzin, 1-12 parts sodium polynaphthalene sulfonate, 1-12 parts methylnaphthalene sulfonate formaldehyde condensate, 1-12 parts sodium polymer salt of catalytic reforming petroleum mid-range distillate and formaldehyde, 1-10 parts fatty alcohol sulfate and / or fatty alcohol sulfonate, and 5-70 parts filler; wherein the filler is silica and / or corn starch.

[0009] In this invention, fatty alcohol sulfate can be fatty alcohol sulfate (Rhodia LFW), and fatty alcohol sulfonate can be fatty alcohol sulfonate (Rhodia wet / p).

[0010] This invention provides a multi-component water-dispersible granule for soybean fields. In its preparation process, fluthiamethoxam and metribuzin, sodium polynaphthalene sulfonate, methylnaphthalene sulfonate formaldehyde condensate, sodium salt of formaldehyde polymer from catalytic reforming petroleum mid-range distillate, fatty alcohol sulfonate and / or fatty alcohol sulfate, and filler are mixed evenly. After mixing, the mixture is air-jet pulverized to produce a powder with a particle size of 10-15 μm. The obtained powder is sprayed with water, kneaded, granulated, and dried to obtain the water-dispersible granule.

[0011] In a preferred embodiment, the present invention provides a multi-component water-dispersible granule for soybean fields, which is formulated from fluthiamethoxam and metribuzin, comprising the following components in parts by weight: 22-52 parts of fluthiamethoxam, 8-16 parts of metribuzin, 2-10 parts of sodium polynaphthalene sulfonate, 2-8 parts of methylnaphthalene sulfonate formaldehyde condensate, 1-10 parts of a polymer sodium salt of catalytic reforming petroleum mid-range distillate and formaldehyde, 1-8 parts of fatty alcohol sulfate and / or fatty alcohol sulfonate, and 8-60 parts of filler.

[0012] In a more preferred embodiment, the present invention provides a multi-component compound water-dispersible granule for soybean fields, which is compounded from fluthiamethoxam and metribuzin, and contains the following components in parts by weight: 24-26 parts of fluthiamethoxam, 10-14 parts of metribuzin, 3-8 parts of sodium polynaphthalene sulfonate, 3-5 parts of methylnaphthalene sulfonate formaldehyde condensate, 2-8 parts of a polymer sodium salt of catalytic reforming petroleum mid-range distillate and formaldehyde, 2-5 parts of fatty alcohol sulfate and / or fatty alcohol sulfonate, 2-5 parts of silica, and 50-52 parts of corn starch.

[0013] In a particularly preferred embodiment, the present invention provides a multi-component water-dispersible granule for soybean fields, which is formulated by compounding fluthiamethoxam and metribuzin, and comprises the following components in parts by weight: 25 parts fluthiamethoxam, 10 parts metribuzin, 3 parts sodium polynaphthalene sulfonate, 5 parts methylnaphthalene sulfonate formaldehyde condensate, 2 parts sodium polymer salt of catalytic reforming petroleum mid-range distillate and formaldehyde, 2 parts fatty alcohol sulfate, 2 parts silica, and 51 parts corn starch.

[0014] In a more preferred embodiment, the present invention provides a multi-component water-dispersible granule for soybean fields, which is formulated from fluthiamethoxam and metribuzin, and comprises the following components in parts by weight: 41-43 parts of fluthiamethoxam, 10-14 parts of metribuzin, 3-8 parts of sodium polynaphthalene sulfonate, 3-5 parts of methylnaphthalene sulfonate formaldehyde condensate, 2-8 parts of a polymer sodium salt of catalytic reforming petroleum mid-range distillate and formaldehyde, 2-5 parts of fatty alcohol sulfate and / or fatty alcohol sulfonate, 2-5 parts of silica, and 21-23 parts of corn starch.

[0015] In a particularly preferred embodiment, the present invention provides a multi-component water-dispersible granule for soybean fields, which is formulated by compounding fluthiamethoxam and metribuzin, and comprises the following components in parts by weight: 42 parts fluthiamethoxam, 14 parts metribuzin, 7 parts sodium polynaphthalene sulfonate, 3 parts methylnaphthalene sulfonate formaldehyde condensate, 5 parts sodium polymer salt of catalytic reforming petroleum mid-range distillate and formaldehyde, 4 parts fatty alcohol sulfonate, 3 parts silica, and 22 parts corn starch.

[0016] In a more preferred embodiment, the present invention provides a multi-component compound water-dispersible granule for soybean fields, which is compounded from fluthiamethoxam and metribuzin, and contains the following components in parts by weight: 49-51 parts of fluthiamethoxam, 10-14 parts of metribuzin, 3-8 parts of sodium polynaphthalene sulfonate, 3-5 parts of methylnaphthalene sulfonate formaldehyde condensate, 2-8 parts of a polymer sodium salt of catalytic reforming petroleum mid-range distillate and formaldehyde, 2-5 parts of fatty alcohol sulfate and / or fatty alcohol sulfonate, 2-5 parts of silica, and 8-10 parts of corn starch.

[0017] In a particularly preferred embodiment, the present invention provides a multi-component water-dispersible granule for soybean fields, which is formulated from fluthiamethoxam and metribuzin, comprising the following components in parts by weight: 50 parts fluthiamethoxam, 10 parts metribuzin, 8 parts sodium polynaphthalene sulfonate, 5 parts methylnaphthalene sulfonate formaldehyde condensate, 8 parts sodium polymer salt of catalytic reforming petroleum mid-range distillate and formaldehyde, 3 parts fatty alcohol sulfonate, 2 parts fatty alcohol sulfate, 5 parts silica, and 9 parts corn starch.

[0018] This invention provides a multi-component water-dispersible granule for soybean fields, which is prepared by compounding fluthiamethoxam and metribuzin. The preparation method includes the following steps:

[0019] (1) Fluthiamethoxam and cypermethrin, sodium polynaphthalene sulfonate, methylnaphthalene sulfonate formaldehyde condensate, catalytic reforming petroleum mid-range distillate, formaldehyde polymer sodium salt, fatty alcohol sulfonate and / or fatty alcohol sulfate and filler (silica and corn starch) are mixed evenly and then air-jet milled to produce a powder with a particle size of 10-15 μm.

[0020] (2) Spray the powder obtained in step (1) into water and knead and granulate it;

[0021] (3) The particles obtained in step (2) are subjected to boiling drying, and the dried particles are collected to obtain the final product.

[0022] This invention provides a multi-component water-dispersible granule for soybean fields, which is prepared by compounding fluthiamethoxam and metribuzin. The preparation method includes the following more detailed steps:

[0023] (1) The active components fluthiamethoxam and cypermethrin, sodium polynaphthalene sulfonate, formaldehyde condensate methyl naphthalene sulfonate, catalytic reforming petroleum mid-range distillate, formaldehyde polymer sodium salt, fatty alcohol sulfonate and / or fatty alcohol sulfate, and filler (silica and corn starch) are mixed evenly. After mixing, the mixture is pulverized by air jet milling to produce a powder with a particle size of 10-15 μm. The pulverizing air inlet temperature is 5-10℃ and the pressure is 0.8-1.0 MPa.

[0024] (2) Spray the powder obtained in step (1) into water and knead it, then add it to an extrusion granulator for granulation to make particles with a diameter of 0.4mm-2.0mm. The granulation temperature is 20-40℃.

[0025] (3) The particles obtained in step (2) are then subjected to boiling drying. The air inlet temperature is 35-45℃ and the absolute moisture content of the air inlet is 3-10g / kg. The moisture content of the output product is kept at 0.8-1.5%. The dried particles are collected and sieved to obtain columnar uniform particles, which are then water-dispersible granules.

[0026] The advantages of using the technical solution of this invention are as follows:

[0027] This invention provides a multi-component water-dispersible granule for soybean fields, which is a water-dispersible granule made by compounding fluthiamethoxam and metribuzin. It has good control effect, stable physical and chemical properties, and is not easy to decompose and deteriorate to cause phytotoxicity. The suspension rate reaches more than 95%. In the process of use, only one dispersion is required, and the application process is simple. The water-dispersible granule is a granular solid with good flowability. After pouring, it does not stick to the wall and will not leave residue in the packaging container to cause secondary pollution. Detailed Implementation

[0028] The present invention can be better understood from the following embodiments. However, those skilled in the art will readily understand that the descriptions in the embodiments are for illustrative purposes only and should not, and will not, limit the invention as detailed in the claims.

[0029] Example 1

[0030] A multi-component water-dispersible granule formulation for soybean fields, comprising the following components in parts by weight:

[0031]

[0032] The preparation method of the above-mentioned multi-component water-dispersible granules for soybean fields includes the following steps:

[0033] (1) Fluthiamethoxam, cypermethrin, sodium polynaphthalene sulfonate, methylnaphthalene sulfonate formaldehyde condensate, catalytic reforming petroleum mid-range distillate, formaldehyde polymer sodium salt, fatty alcohol sulfate, silica and corn starch are mixed evenly and then air-jet milled to produce a powder with a particle size of 10-15 μm. The inlet air temperature for milling is 5-10℃ and the pressure is 0.8-1.0 MPa.

[0034] (2) Spray the powder obtained in step (1) into water and knead it, then add it to an extrusion granulator for granulation to make particles with a diameter of 0.4mm-2.0mm. The granulation temperature is 20-40℃.

[0035] (3) The particles obtained in step (2) are then subjected to boiling drying. The air inlet temperature is 35-45℃ and the absolute moisture content of the air inlet is 3-10g / kg. The moisture content of the output product is kept at 0.8-1.5%. The dried particles are collected and sieved to obtain columnar uniform particles, which are then water-dispersible granules.

[0036] Example 2

[0037] A multi-component water-dispersible granule formulation for soybean fields, comprising the following components in parts by weight:

[0038]

[0039] The preparation method of the above-mentioned multi-component water-dispersible granules for soybean fields includes the following steps:

[0040] (1) Fluthiamethoxam, cypermethrin, sodium polynaphthalene sulfonate, methylnaphthalene sulfonate formaldehyde condensate, catalytic reforming petroleum mid-range distillate, formaldehyde polymer sodium salt, fatty alcohol sulfonate, silica and corn starch are mixed evenly and then air-jet milled to produce a powder with a particle size of 10-15 μm. The inlet air temperature for milling is 5-10℃ and the pressure is 0.8-1.0 MPa.

[0041] (2) Spray the powder obtained in step (1) into water and knead it, then add it to an extrusion granulator for granulation to make particles with a diameter of 0.4mm-2.0mm. The granulation temperature is 20-40℃.

[0042] (3) The particles obtained in step (2) are then subjected to boiling drying. The air inlet temperature is 35-45℃ and the absolute moisture content of the air inlet is 3-10g / kg. The moisture content of the output product is kept at 0.8-1.5%. The dried particles are collected and sieved to obtain columnar uniform particles, which are then water-dispersible granules.

[0043] Example 3

[0044] A multi-component water-dispersible granule formulation for soybean fields, comprising the following components in parts by weight:

[0045]

[0046] The preparation method of the above-mentioned multi-component water-dispersible granules for soybean fields includes the following steps:

[0047] (1) Fluthiamethoxam, cypermethrin, sodium polynaphthalene sulfonate, methylnaphthalene sulfonate formaldehyde condensate, catalytic reforming petroleum mid-range distillate, formaldehyde polymer sodium salt, fatty alcohol sulfonate, fatty alcohol sulfate, silica and corn starch are mixed evenly and then air-jet milled to produce a powder with a particle size of 10-15 μm. The inlet air temperature for milling is 5-10℃ and the pressure is 0.8-1.0 MPa.

[0048] (2) Spray the powder obtained in step (1) into water and knead it, then add it to an extrusion granulator for granulation to make particles with a diameter of 0.4mm-2.0mm. The granulation temperature is 20-40℃.

[0049] (3) The particles obtained in step (2) are then subjected to boiling drying. The air inlet temperature is 35-45℃ and the absolute moisture content of the air inlet is 3-10g / kg. The moisture content of the output product is kept at 0.8-1.5%. The dried particles are collected and sieved to obtain columnar uniform particles, which are then water-dispersible granules.

[0050] Comparative Example 1

[0051] A water-dispersible granule formulation of metribuzin comprises the following components in parts by weight:

[0052]

[0053] Its preparation method includes the following steps:

[0054] The active component, metribuzin, and adjuvants (methylnaphthalene sulfonate formaldehyde condensate, fatty alcohol sulfonate, and corn starch) were mixed for 20 minutes. The resulting mixture was then placed in a twin-screw mixer (I) and simultaneously pulverized by an air jet mill to achieve a particle size of 800 mesh or larger. The pulverized powder was collected by a cyclone separator and a bag filter, and then mixed again in a twin-screw mixer (II) to obtain a uniform powder with a particle size of 10-20 μm. A precise amount of the powder was accurately weighed into a kneader, water was sprayed in, and then the powder was poured into a granulator for granulation to obtain wet granules with a particle size of 0.4-1 mm. The granules were dried, sieved, and then measured and packaged.

[0055] Comparative Example 2

[0056] A wettable powder of metribuzin comprises the following components in parts by weight:

[0057]

[0058] Its preparation method includes the following steps:

[0059] The active component, cypermethrin, and the adjuvants (sodium naphthalene sulfonate, fatty alcohol sulfate, silica, and kaolin) were mixed for 20 minutes. The resulting mixture was then placed in a twin-screw mixer (Ⅰ) and pulverized by an air jet mill to a particle size of 500 mesh or larger. The pulverized powder was collected by a cyclone separator and a bag filter and then mixed again in a twin-screw mixer (Ⅱ) to obtain a uniform powder with a particle size of 30-40 μm.

[0060] Comparative Example 3

[0061] A fluthiamethoxam aqueous suspension comprises the following components in parts by weight:

[0062]

[0063] Its preparation method includes the following steps:

[0064] Fluthiamethoxam, adjuvants (sodium naphthalene sulfonate, methyl naphthalene sulfonate formaldehyde condensate, fatty alcohol sulfate, bentonite, ethylene glycol and xanthan gum) and water are mixed and dispersed in a shearing vessel for 20 minutes according to the formula ratio. The resulting mixture is then fed into a sand mill for grinding to obtain a suspension. The particle size of the solid particles in the suspension is 3-5 μm. The suspension is then tested, measured and packaged.

[0065] Comparative Example 4

[0066] A fluthiamethoxam aqueous suspension comprises the following components in parts by weight:

[0067]

[0068] The preparation method is as follows:

[0069] Fluthiamethoxam, adjuvants (sodium polynaphthalene sulfonate, methylnaphthalene sulfonate formaldehyde condensate, fatty alcohol sulfate, fatty alcohol sulfonate, bentonite, ethylene glycol and xanthan gum) and water are mixed and dispersed in a shearing vessel for 20 minutes according to the formula ratio. The resulting mixture is then fed into a sand mill for grinding to obtain a suspension. The particle size of the solid particles in the suspension is 3-5 μm. The suspension is then tested, measured and packaged.

[0070] Results data:

[0071] The herbicidal effects of the water-dispersible granules (35%, 56%, and 60%) containing fluthiamethoxam and metribuzin prepared in the examples, the metribuzin water-dispersible granules and wettable powder (70%) prepared in Comparative Examples 1 and 2, and the fluthiamethoxam water suspension (30% and 40%) prepared in Comparative Examples 3 and 4, on soybeans were tested. The specific test results are shown in Table 1.

[0072] Table 1 Weed Control Effectiveness Data

[0073]

[0074] As shown in Table 1, the water-dispersible granules prepared in the embodiments of the present invention have a significant synergistic effect compared with the water suspension, wettable powder and water-dispersible granules prepared in the comparative examples. The weeding effect on grasses is about 40-50% higher and the weeding effect on broadleaf weeds is about 300% higher.

[0075] The water-dispersible granules (35%, 56%, and 60%) containing fluthiamethoxam and metribuzin prepared in the examples were subjected to suspension stability tests with the fluthiamethoxam water suspensions (30% and 40%) prepared in Comparative Examples 3 and 4. The specific test results are shown in Table 2.

[0076] Table 2 Suspension stability test data

[0077]

[0078] As can be seen from Table 2, the water-dispersible granules prepared in the embodiments of the present invention have a higher suspension rate compared with the suspension prepared in the comparative example. Even when stored at 54℃ and -5℃, and even after one or two years of storage, the suspension effect is not affected. This fully demonstrates that the water-dispersible granules of the present invention have better efficacy than the suspension in the field.

[0079] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications may still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions may be made to some of the technical features. Such modifications or substitutions 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 multi-component water-dispersible granule formulation for soybean fields, characterized in that, The water-dispersible granules comprise the following components in parts by weight: 20-55 parts of fluthiamethoxam, 5-20 parts of cyhalofop-butyl, 1-12 parts of sodium polynaphthalene sulfonate, 1-12 parts of methylnaphthalene sulfonate formaldehyde condensate, 1-12 parts of a polymer sodium salt of catalytic reforming petroleum mid-range distillate and formaldehyde, 1-10 parts of fatty alcohol sulfate and / or fatty alcohol sulfonate, and 5-70 parts of filler; wherein the filler is silica and / or corn starch.

2. The soybean multi-component water-dispersible granule according to claim 1, characterized in that, In its preparation process, fluthiamethoxam and cypermethrin, sodium polynaphthalene sulfonate, methylnaphthalene sulfonate formaldehyde condensate, catalytic reforming petroleum mid-range distillate and formaldehyde polymer sodium salt, fatty alcohol sulfonate and / or fatty alcohol sulfate and filler are mixed evenly. After mixing, the mixture is air-jet milled to produce a powder with a particle size of 10-15μm. The obtained powder is sprayed with water, kneaded, granulated and dried to obtain water-dispersible granules.

3. The soybean multi-component water-dispersible granule according to claim 1, characterized in that, The water-dispersible granules comprise the following components in parts by weight: 22-52 parts of fluthiamethoxam, 8-16 parts of cyhalofop-butyl, 2-10 parts of sodium polynaphthalene sulfonate, 2-8 parts of methylnaphthalene sulfonate formaldehyde condensate, 1-10 parts of a polymer sodium salt of catalytic reforming petroleum mid-range distillate and formaldehyde, 1-8 parts of fatty alcohol sulfate and / or fatty alcohol sulfonate, and 8-60 parts of filler.

4. The soybean multi-component water-dispersible granule according to claim 1, characterized in that, The water-dispersible granules comprise the following components in parts by weight: 24-26 parts of fluthiamethoxam, 10-14 parts of cypermethrin, 3-8 parts of sodium polynaphthalene sulfonate, 3-5 parts of methylnaphthalene sulfonate formaldehyde condensate, 2-8 parts of a polymer sodium salt of catalytic reforming petroleum mid-range distillate and formaldehyde, 2-5 parts of fatty alcohol sulfate and / or fatty alcohol sulfonate, 2-5 parts of silica, and 50-52 parts of corn starch; preferably, 25 parts of fluthiamethoxam, 10 parts of cypermethrin, 3 parts of sodium polynaphthalene sulfonate, 5 parts of methylnaphthalene sulfonate formaldehyde condensate, 2 parts of a polymer sodium salt of catalytic reforming petroleum mid-range distillate and formaldehyde, 2 parts of fatty alcohol sulfate, 2 parts of silica, and 51 parts of corn starch.

5. The soybean multi-component water-dispersible granule according to claim 1, characterized in that, The water-dispersible granules comprise the following components in parts by weight: 41-43 parts of fluthiamethoxam, 10-14 parts of cypermethrin, 3-8 parts of sodium polynaphthalene sulfonate, 3-5 parts of methylnaphthalene sulfonate formaldehyde condensate, 2-8 parts of a polymer sodium salt of catalytic reforming petroleum mid-range distillate and formaldehyde, 2-5 parts of fatty alcohol sulfate and / or fatty alcohol sulfonate, 2-5 parts of silica, and 21-23 parts of corn starch; preferably, 42 parts of fluthiamethoxam, 14 parts of cypermethrin, 7 parts of sodium polynaphthalene sulfonate, 3 parts of methylnaphthalene sulfonate formaldehyde condensate, 5 parts of a polymer sodium salt of catalytic reforming petroleum mid-range distillate and formaldehyde, 4 parts of fatty alcohol sulfonate, 3 parts of silica, and 22 parts of corn starch.

6. The soybean multi-component water-dispersible granule according to claim 1, characterized in that, The water-dispersible granules comprise the following components in parts by weight: 49-51 parts of fluthiamethoxam, 10-14 parts of cypermethrin, 3-8 parts of sodium polynaphthalene sulfonate, 3-5 parts of methylnaphthalene sulfonate formaldehyde condensate, 2-8 parts of a polymer sodium salt of catalytic reforming petroleum mid-range distillate and formaldehyde, 2-5 parts of fatty alcohol sulfate and / or fatty alcohol sulfonate, 2-5 parts of silica, and 8-10 parts of corn starch; preferably, 50 parts of fluthiamethoxam, 10 parts of cypermethrin, 8 parts of sodium polynaphthalene sulfonate, 5 parts of methylnaphthalene sulfonate formaldehyde condensate, 8 parts of a polymer sodium salt of catalytic reforming petroleum mid-range distillate and formaldehyde, 3 parts of fatty alcohol sulfonate, 2 parts of fatty alcohol sulfate, 5 parts of silica, and 9 parts of corn starch.

7. The method for preparing the soybean multi-component water-dispersible granules according to claim 1, characterized in that, Includes the following steps: (1) Fluthiamethoxam and cypermethrin, sodium polynaphthalene sulfonate, methylnaphthalene sulfonate formaldehyde condensate, catalytic reforming petroleum mid-range distillate, formaldehyde polymer sodium salt, fatty alcohol sulfonate and / or fatty alcohol sulfate and filler are mixed evenly, and then air jet milled to make a powder with a solid particle size of 10-15μm. (2) Spray the powder obtained in step (1) into water and knead and granulate it; (3) The particles obtained in step (2) are subjected to boiling drying, and the dried particles are collected to obtain the final product.

8. The method for preparing the multi-component water-dispersible granules for soybean fields according to claim 7, characterized in that, In step (1), the parameters of the airflow pulverizer are as follows: the pulverizer inlet air temperature is 5-10℃, and the pressure is 0.8-1.0MPa; the filler is silica and / or corn starch.

9. The method for preparing the soybean multi-component water-dispersible granules according to claim 7, characterized in that, In step (2), the granulation parameters are as follows: granulation temperature is 20-40℃; the diameter of the resulting particles is 0.4mm-2.0mm.

10. The method for preparing the soybean multi-component water-dispersible granules according to claim 7, characterized in that, In step (3), the parameters for boiling drying are as follows: the inlet air temperature is 35-45℃, the absolute moisture content of the inlet air is 3-10g / kg, and the moisture content of the discharged product is maintained at 0.8-1.5%.

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