CN112679273A - High-tower pesticide-fertilizer containing thifluzamide and azoxystrobin and application thereof - Google Patents
High-tower pesticide-fertilizer containing thifluzamide and azoxystrobin and application thereof Download PDFInfo
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- CN112679273A CN112679273A CN202110015568.0A CN202110015568A CN112679273A CN 112679273 A CN112679273 A CN 112679273A CN 202110015568 A CN202110015568 A CN 202110015568A CN 112679273 A CN112679273 A CN 112679273A
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Abstract
The invention discloses a high tower pesticide fertilizer containing thifluzamide and azoxystrobin and a preparation method thereof. The thifluzamide, the azoxystrobin and the chemical fertilizer are mixed, so that the derivative propagation of bacteria and the supply of plant nutrient components can be effectively inhibited, the high-tower pesticide fertilizer produced by using a high-tower process has a smooth surface and is not easy to pulverize, the pesticide can play a role together with the fertilizer, the pesticide is easy to absorb by plants, the upward conductivity is good, the residue in soil is less, and the pesticide fertilizer is environment-friendly and efficient. The pesticide fertilizer is applied to soil before or during seeding, has little influence on people, livestock and environment, reduces the use of labor force by applying fertilizer and pesticide at one time, can be applied to the control of sheath blight and damping off of crops, and is easy to popularize and use in a large range.
Description
Technical Field
The invention belongs to the technical field of high tower pesticide fertilizer preparation, and particularly relates to a high tower pesticide fertilizer containing thifluzamide and azoxystrobin and application thereof.
Background
The pesticide fertilizer has one or more of functions of killing/inhibiting pests, sterilizing/inhibiting bacteria, weeding/inhibiting grass and regulating growth, and can provide nutrition for crops or simultaneously has a functional fertilizer-pesticide fertilizer for providing nutrition or improving the utilization rate of the fertilizer. The first research on the pesticide fertilizer is the herbicide fertilizer, for example, japanese researchers mix the herbicide pentachlorobenzoyl into the fertilizer to be used as a base fertilizer, so as to achieve the purposes of saving labor force and weeding. However, the reports of the pesticide fertilizer with the effects of killing and killing or inhibiting and inhibiting insects are less.
Thifluzamide belongs to thiazole amide bactericides, and has strong internal absorption, conductivity and special effect. Azoxystrobin is a brand-new product for preventing and treating various plant diseases based on natural antibiotic stobiluron A, not only has strong bactericidal effect, but also can play a role in preventing and repairing, can not inhibit each other with other bactericides, has longer duration than other bactericides, and can synergistically promote the killing of bacteria when being used together. However, at present, people concentrate on the spray control of the two bactericides, the pesticide effect time is short, the two bactericides need to be repeatedly sprayed, and the two bactericides have great harm to the environment. The soil pesticide application prevention and control mode requires that the pesticide has excellent upward conductivity, the main application mode is seed dressing, but the pesticide is used as a seed dressing agent, the pesticide directly acts on the surface of soil, after entering the soil, oxidation-reduction reaction can occur no matter in an aerobic or anaerobic environment, the soil can generate adsorption effect, a large amount of pesticide residues can be generated, the effect can not be effectively exerted, and secondary pollution can be caused to underground water and surrounding water environment.
The high tower is a mixture which melts the compound fertilizer raw materials at high temperature or becomes molten slurry, the mixture becomes spherical due to surface tension when scattering in the process of scattering and descending from the high tower, the spherical. The technology for producing the fertilizer by using high tower equipment is mature day by day, but the technology for fusing the pesticide and the fertilizer is only reported. In addition, urea produces biuret with an increase in melting temperature and an increase in melting time, which adversely affects plant seedlings (seedling burning), and secondly, the efficacy of the pesticide decreases during melting with urea due to poor high temperature stability of the pesticide.
Therefore, the fusion of the pesticide and the fertilizer is promoted, the residue of the pesticide in the soil is reduced, the fertilizer efficiency and the pesticide effect are improved, and the research and development of the high-tower pesticide fertilizer with both nutrition and pesticide effect have important significance.
Disclosure of Invention
Aiming at the problems of high pesticide residue in soil and low pesticide effect in the prior art, the invention provides a high tower pesticide fertilizer containing thifluzamide and azoxystrobin and application thereof.
The invention is realized by the following technical scheme:
a high tower pesticide-fertilizer containing thifluzamide and azoxystrobin comprises the following raw materials in parts by weight: 55-65 parts of urea, 1-4 parts of potassium fulvate, 0.04-0.5 part of thifluzamide, 0.04-0.5 part of azoxystrobin, 10-15 parts of phosphate fertilizer, 15-20 parts of potash fertilizer, 3-5 parts of diatomite and 1-3 parts of cyclodextrin.
Furthermore, the cyclodextrin is more than one of alpha-cyclodextrin, beta-cyclodextrin and gamma-cyclodextrin. Further, the phosphate fertilizer is monoammonium phosphate, and the potash fertilizer is potassium chloride or potassium sulfate.
In the invention, the preparation method of the high-tower pesticide-fertilizer containing thifluzamide and azoxystrobin comprises the following steps:
(1) adding thifluzamide, azoxystrobin and cyclodextrin into water at 60-80 ℃ for dissolving, reacting for 20-30 minutes, and spray-drying after reaction to obtain cyclodextrin-coated micro-nano particles;
(2) adding urea into a melting tank, controlling the temperature of the melting tank at 120-125 ℃, and overflowing the melted urea solution to a primary tank;
(3) adding a potash fertilizer into a primary tank, uniformly mixing the potash fertilizer with a urea solution, controlling the temperature of the primary tank at 110-115 ℃, and overflowing the mixed molten material to a secondary tank;
(4) adding a phosphate fertilizer, potassium fulvate and the cyclodextrin-coated micro-nano particles prepared in the step (1) into a secondary tank, uniformly mixing to obtain mixed molten slurry, and controlling the temperature of the secondary tank at 100-105 ℃;
(5) emulsifying the mixed molten slurry, granulating in a high tower to obtain medicinal fertilizer, sieving, and cooling to 30-40 deg.C;
(6) and wrapping diatomite on the surface of the cooled pesticide fertilizer particles, and performing anti-caking treatment to obtain the high-tower pesticide fertilizer containing thifluzamide and azoxystrobin.
Further, the mixing time in the step (4) is 2-5 min.
Further, the tower bottom temperature is 40-70 ℃ during high tower granulation.
Further, the grain diameter of the screened medical fertilizer in the step (5) is 2-4.5 mm.
Further, the diatomite is wrapped in a roller manner in the step (6).
Further, the micro-nano particles wrapped by the cyclodextrin in the step (1) are porous spherical particles with the particle size of 10-20 microns.
In the invention, the high-tower pesticide-fertilizer containing thifluzamide and azoxystrobin is applied to preventing and treating sheath blight and damping off of crops.
The adsorption mode of the pesticide in the soil is that the pesticide component is loaded by the intermolecular forces of van der Waals force, dispersion force, induction force, hydrogen bond, ionic bond and the like acting on the surface of the soil or the internal mineral substance and the hydrophobic adsorption, coordination exchange and ion coupling action of the soil. The high-tower pesticide fertilizer containing thifluzamide and azoxystrobin, prepared by the invention, can reduce the adsorption effect of soil on pesticides, firstly, the fertilizer and the pesticides are integrated into a whole, so that the direct contact of the pesticides and the soil is avoided or reduced, and secondly, the pesticide fertilizer contains potassium fulvate and cyclodextrin components, so that on one hand, the upward transportation of the active ingredients of the pesticides to plant roots and stems can be enhanced, the absorption of the active ingredients is promoted, on the other hand, the stable structure formed by the cyclodextrin and the pesticides can reduce the intermolecular force between the soil and the pesticides, the residue of the pesticides in the soil is reduced, the environment is protected, and the utilization rate of the active ingredients of the pesticides is improved. The cyclodextrin is provided with a three-dimensional chiral cavity with hydrophilicity outside the ring and hydrophobicity inside the ring and a certain size, can form an inclusion compound with pesticide molecules, improves the fusion property and high temperature resistance stability of the pesticide molecules and the compound fertilizer molten slurry, promotes the thermal stability of the pesticide molecules and the compound fertilizer molten slurry during melting, does not damage the stability of the cyclodextrin and a pesticide wrapping structure during emulsification, shortens the melting time, reduces the melting temperature and reduces the generation of biuret.
Advantageous effects
(1) The thifluzamide and the azoxystrobin containing high tower pesticide fertilizer prepared by the invention are mixed with the thifluzamide and the azoxystrobin which have sterilization effects and chemical fertilizers, so that the derivative propagation of bacteria and the supply of plant nutrient components can be effectively inhibited, and the high tower pesticide fertilizer prepared by the method has smooth surface and is not easy to pulverize, pesticide can play a role together with the fertilizer, is easy to be absorbed by plants, has good upward conductivity, has little residue in soil, is environment-friendly and efficient;
(2) the invention applies the pesticide fertilizer to the soil before or during sowing, has little influence on human and livestock and environment, reduces the use of labor force by applying fertilizer and pesticide at one time, and is easy to popularize and use in a large range.
Detailed Description
For a further understanding of the invention, reference will now be made to the preferred embodiments of the invention in conjunction with the following examples, but it will be understood that the description is intended to illustrate the features and advantages of the invention further, and not to limit the invention.
The parts described in the examples of the present invention are parts by weight.
Example 1
The composition of the raw materials of the high tower pesticide-fertilizer containing thifluzamide and azoxystrobin in the embodiment is as follows: 55 parts of urea, 4 parts of potassium fulvate, 0.08 part of thifluzamide, 0.12 part of azoxystrobin, 1.2 parts of beta-cyclodextrin, 13 parts of monoammonium phosphate, 20 parts of potassium chloride and 5 parts of diatomite;
the preparation method of the high-tower pesticide-fertilizer containing thifluzamide and azoxystrobin comprises the following steps:
(1) adding thifluzamide, azoxystrobin and cyclodextrin into water at 60 ℃ for dissolving, reacting for 30 minutes, and spray-drying after reaction to obtain cyclodextrin-coated micro-nano particles which are porous spherical particles with the particle size of 10-20 mu m;
(2) adding urea into a melting tank, controlling the temperature of the melting tank at 120-125 ℃, and overflowing the melted urea solution to a primary tank;
(3) adding a potash fertilizer into a primary tank, uniformly mixing the potash fertilizer with a urea solution, controlling the temperature of the primary tank at 110-115 ℃, and overflowing the mixed molten material to a secondary tank;
(4) adding a phosphate fertilizer, potassium fulvate and the cyclodextrin-coated micro-nano particles prepared in the step (1) into a secondary tank, stirring for 4 minutes, uniformly mixing to obtain mixed molten slurry, and controlling the temperature of the secondary tank at 100-105 ℃;
(5) emulsifying the mixed molten material, granulating in a high tower after emulsification, sieving medicinal fertilizer particles with the particle size of 2-4.5mm (the medicinal fertilizer particles with the particle size of less than 2mm or more than 4.5mm enter a primary tank for melting) at the tower bottom temperature of 60 ℃, and cooling to 30-40 ℃;
(6) and (3) wrapping diatomite on the surface of the cooled pesticide fertilizer particles by using a wrapping roller, and performing anti-caking treatment to obtain the high-tower pesticide fertilizer containing thifluzamide and azoxystrobin.
Example 2
The composition of the raw materials of the high tower pesticide-fertilizer containing thifluzamide and azoxystrobin in the embodiment is as follows: 60 parts of urea, 3 parts of potassium fulvate, 0.1 part of thifluzamide, 0.1 part of azoxystrobin, 1.2 parts of beta-cyclodextrin, 15 parts of monoammonium phosphate, 15 parts of potassium chloride and 4 parts of diatomite;
the preparation method of the high-tower pesticide-fertilizer containing thifluzamide and azoxystrobin comprises the following steps:
(1) adding thifluzamide, azoxystrobin and cyclodextrin into water at 80 ℃ for dissolving, reacting for 20 minutes, and spray-drying after reaction to obtain cyclodextrin-coated micro-nano particles which are porous spherical particles with the particle size of 10-20 mu m;
(2) adding urea into a melting tank, controlling the temperature of the melting tank at 120-125 ℃, and overflowing the melted urea solution to a primary tank;
(3) adding a potash fertilizer into a primary tank, uniformly mixing the potash fertilizer with a urea solution, controlling the temperature of the primary tank at 110-115 ℃, and overflowing the mixed molten material to a secondary tank;
(4) adding a phosphate fertilizer, potassium fulvate and the cyclodextrin-coated micro-nano particles prepared in the step (1) into a secondary tank, stirring for 4 minutes, uniformly mixing to obtain mixed molten slurry, and controlling the temperature of the secondary tank at 100-105 ℃;
(5) emulsifying the mixed molten material, granulating in a high tower after emulsification, sieving medicinal fertilizer particles with the particle size of 2-4.5mm (the medicinal fertilizer particles with the particle size of less than 2mm or more than 4.5mm enter a primary tank for melting) at the tower bottom temperature of 60 ℃, and cooling to 30-40 ℃;
(6) and (3) wrapping diatomite on the surface of the cooled pesticide fertilizer particles by using a wrapping roller, and performing anti-caking treatment to obtain the high-tower pesticide fertilizer containing thifluzamide and azoxystrobin.
Example 3
The composition of the raw materials of the high tower pesticide-fertilizer containing thifluzamide and azoxystrobin in the embodiment is as follows: 65 parts of urea, 2 parts of potassium fulvate, 0.2 part of thifluzamide, 0.2 part of azoxystrobin, 1.8 parts of beta-cyclodextrin, 12 parts of monoammonium phosphate, 15 parts of potassium chloride and 5 parts of diatomite;
the preparation method of the high-tower pesticide-fertilizer containing thifluzamide and azoxystrobin comprises the following steps:
(1) adding thifluzamide, azoxystrobin and cyclodextrin into 70 ℃ water for dissolving, reacting for 25 minutes, and spray-drying after reaction to obtain cyclodextrin-coated micro-nano particles which are porous spherical particles with the particle size of 10-20 mu m;
(2) adding urea into a melting tank, controlling the temperature of the melting tank at 120-125 ℃, and overflowing the melted urea solution to a primary tank;
(3) adding a potash fertilizer into a primary tank, uniformly mixing the potash fertilizer with a urea solution, controlling the temperature of the primary tank at 110-115 ℃, and overflowing the mixed molten material to a secondary tank;
(4) adding a phosphate fertilizer, potassium fulvate and the cyclodextrin-coated micro-nano particles prepared in the step (1) into a secondary tank, stirring for 4 minutes, uniformly mixing to obtain mixed molten slurry, and controlling the temperature of the secondary tank at 100-105 ℃;
(5) emulsifying the mixed molten material by using emulsification, granulating in a high tower after emulsification, sieving medicinal fertilizer particles with the particle size of 2-4.5mm (the medicinal fertilizer particles with the particle size of less than 2mm or more than 4.5mm enter a primary tank for melting) at the tower bottom temperature of 60 ℃, and cooling to 30-40 ℃;
(6) and (3) wrapping diatomite on the surface of the cooled pesticide fertilizer particles by using a wrapping roller, and performing anti-caking treatment to obtain the high-tower pesticide fertilizer containing thifluzamide and azoxystrobin.
Comparative example 1
The raw materials of the high tower fertilizer in the comparative example are as follows: 60 parts of urea, 3 parts of potassium fulvate, 15 parts of monoammonium phosphate, 15 parts of potassium chloride and 4 parts of diatomite;
the preparation method of the high tower fertilizer comprises the following steps:
(1) adding urea into a melting tank, controlling the temperature of the melting tank at 120-125 ℃, and overflowing the melted urea solution to a primary tank;
(2) adding a potash fertilizer into a primary tank, uniformly mixing the potash fertilizer with a urea solution, controlling the temperature of the primary tank at 110-115 ℃, and overflowing the mixed molten material to a secondary tank;
(3) adding phosphate fertilizer and potassium fulvate into the secondary tank, stirring for 4 minutes, and uniformly mixing to obtain mixed molten slurry, wherein the temperature of the secondary tank is controlled at 100-105 ℃;
(4) emulsifying the mixed molten slurry, granulating in a high tower after emulsification, sieving the pesticide-fertilizer particles with the particle size of 2-4.5mm (the pesticide-fertilizer particles with the particle size of less than 2mm or more than 4.5mm enter a primary tank for continuous melting) at the tower bottom temperature of 60 ℃, and cooling to 30-40 ℃;
(5) and (3) wrapping diatomite on the surface of the cooled pesticide fertilizer particles by using a wrapping roller, and performing anti-caking treatment to obtain the high tower fertilizer.
Test of field drug effect (Rice sheath blight disease)
The test site is a test base in Hubei province, the rice seeding mode is a direct seeding mode, the field test area (soil fertility is moderate) is divided into 5 large areas, each large area is internally provided with 3 repetitions, 15 cells in total are arranged, and each cell is 50m2300g of rice seeds are sown in each plot, 5 plots are respectively numbered as 1, 2, 3, 4 and 5, wherein the plots 1, 2 and 3 are respectively applied with the high-tower fertilizer containing thifluzamide and azoxystrobin in examples 1-3 before sowing, 3.8kg of the fertilizer is applied to each plot, 3.8kg of the high-tower fertilizer in comparative example 1 is applied to each plot 4 before sowing, seed dressing treatment is carried out by using thifluzamide and azoxystrobin, 3.8kg of the high-tower fertilizer in comparative example 1 is applied to each plot in the plot 5 before sowing, and no treatment is carried out on the seeds. Then, statistics are carried out on the emergence rate of the rice seeds, the seedling stage key and diseased plant rate, and the results are shown in the following table 1.
TABLE 1 Rice sheath blight disease field test Effect
Claims (10)
1. A high tower pesticide-fertilizer containing thifluzamide and azoxystrobin is characterized by comprising the following raw materials in parts by weight: 55-65 parts of urea, 1-4 parts of potassium fulvate, 0.04-0.5 part of thifluzamide, 0.04-0.5 part of azoxystrobin, 10-15 parts of phosphate fertilizer, 15-20 parts of potash fertilizer, 3-5 parts of diatomite and 1-3 parts of cyclodextrin.
2. The high tower insecticide-fertilizer containing thifluzamide and azoxystrobin according to claim 1, wherein the cyclodextrin is more than one of alpha-cyclodextrin, beta-cyclodextrin and gamma-cyclodextrin.
3. The tower pesticide-fertilizer containing thifluzamide and azoxystrobin according to claim 1, characterized in that the phosphate fertilizer is monoammonium phosphate, and the potash fertilizer is potassium chloride or potassium sulfate.
4. A method for preparing a high tower pesticide-containing fertilizer containing thifluzamide and azoxystrobin according to any one of claims 1 to 3, which is characterized by comprising the following steps:
(1) adding thifluzamide, azoxystrobin and cyclodextrin into water at 60-80 ℃ for dissolving, reacting for 20-30 minutes, and spray-drying after reaction to obtain cyclodextrin-coated micro-nano particles;
(2) adding urea into a melting tank, controlling the temperature of the melting tank at 120-125 ℃, and overflowing the melted urea solution to a primary tank;
(3) adding a potash fertilizer into a primary tank, uniformly mixing the potash fertilizer with a urea solution, controlling the temperature of the primary tank at 110-115 ℃, and overflowing the mixed molten material to a secondary tank;
(4) adding a phosphate fertilizer, potassium fulvate and the cyclodextrin-coated micro-nano particles prepared in the step (1) into a secondary tank, uniformly mixing to obtain mixed molten slurry, and controlling the temperature of the secondary tank at 100-105 ℃;
(5) emulsifying the mixed molten slurry, granulating in a high tower to obtain medicinal fertilizer, sieving, and cooling to 30-40 deg.C;
(6) and wrapping diatomite on the surface of the cooled pesticide fertilizer particles, and performing anti-caking treatment to obtain the high-tower pesticide fertilizer containing thifluzamide and azoxystrobin.
5. The method according to claim 4, wherein the mixing time in the step (4) is 2 to 5 min.
6. The method according to claim 4, wherein the tower bottom temperature during the high tower granulation is 40 to 70 ℃.
7. The preparation method according to claim 4, wherein the grain size of the sieved medical fertilizer in the step (5) is 2-4.5 mm.
8. The method according to claim 4, wherein the diatomite is wrapped in the step (6) by a roller.
9. The preparation method according to claim 4, wherein the cyclodextrin-coated micro-nano particles in step (1) are porous spherical particles with a particle size of 10-20 μm.
10. The application of the tall tower insecticide-fertilizer containing thifluzamide and azoxystrobin according to any one of claims 1 to 3 in preventing and treating sheath blight and damping off of crops.
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Application publication date: 20210420 |