CN1939878B - Method for coating fertilizer by emulsified and/or soluble adhesive - Google Patents

Abstract

Production of coated slow-released fertilizer by emulsion and solution adhesion agent is carried out by coating fertilizer by melt and/or organic solvent coating liquid, forming hydrophobic organic coating layer on fertilizer surface, coating pre-coated fertilizer with hydrophobic organic membrane-layer on surface by emulsion and/or solution adhesion and obtaining the final product. The hydrophobic organic membrane-layer can be low-molecular hydrophobic organic membrane layer and/or hydrophobic polymer membrane layer with melt point or softening point >=76 degree; emulsion and solution adhesion agent can be polymer emulsion adhesion agent, solution polymer adhesion agent and/or solution inorganic adhesion agent. It's cheap and effective.

Description

Method for coating fertilizer with water emulsion type and/or aqueous solution type adhesive

1. Technical field

The invention relates to a coating method, in particular to a method for coating fertilizer with water emulsion type and aqueous solution type adhesive, and belongs to the technical field of slow-release fertilizer preparation.

2. Background technology

Slow-release fertilizers are the development direction of agricultural fertilizers. Among them, coated slow-release fertilizer is the most important type of slow-release fertilizer. It is coated with organic polymer or inorganic coating on the surface of fertilizer particles to slow down the rate of fertilizer dissolution into the field and achieve slow-release fertilizers. the goal of. Coated slow-release fertilizers can have excellent controllable slow-release performance, which is the main direction of slow-release fertilizers in the future.

When coating fertilizers, the coating solution can be in the form of a melt (such as a prepolymer melt of a thermosetting polymer), an organic solution (such as an organic solution of a thermoplastic polymer), or an aqueous solution or water lotion. When coating fertilizers to prepare coated slow-release fertilizers, it is ideal to use the coating liquid in the form of melt for coating, because no solvent is used, which is economical and environmentally friendly. However, some can only use the coating liquid in the form of a solution or an aqueous emulsion, and the coating liquid in the form of an organic solution is used for coating because an organic solvent is used, which is neither economical nor environmentally polluting. Therefore, the use of other water The coating liquid in the form of emulsion is relatively economical and environmentally friendly. Of course, it is relatively economical and environmentally friendly to use aqueous solution for coating, and some can only use aqueous solution, such as amino resin prepolymer solution and acetal resin solution of polyvinyl alcohol and its copolymer.

But, when adopting the coating liquid of aqueous solution form or water emulsion form to directly coat fertilizer, fertilizer often can be dissolved in the coating liquid of aqueous solution form or water emulsion form, therefore make containing fertilizer in the coating film layer of formation, When drying into a film, the fertilizer in it will be precipitated in the shape of needles in the coated film layer, which will become a fast dissolution channel for the fertilizer to pass through the film layer, reduce the barrier property of the film layer to the fertilizer, and make the prepared coated slow-release fertilizer The release period is shortened, and the fertilizer in the film layer will also reduce the film strength, requiring a thicker film thickness. Therefore, when the coating liquid in the form of aqueous solution or water emulsion is used to coat the fertilizer to prepare the coated slow-release fertilizer, how to prevent the fertilizer from entering the film layer formed by the coating is a difficult problem. When some researchers use polyacrylate emulsion to coat urea to prepare polyacrylate coated slow-release urea, they first spray a thin layer of paraffin film or sulfur film on the surface of urea, and then use polyacrylate emulsion. A method of coating urea. Since the melting point of paraffin is usually lower than 75°C, a thin layer of paraffin film is sprayed first, and then polyacrylate emulsion is used to coat urea, and then the water in the polyacrylate emulsion is volatilized to form a polyacrylate film layer. When drying under normal pressure, the temperature must be lower than 75°C, so the water removal speed in the film layer is very low, and the drying film formation speed is very slow; if you want to increase the drying and water removal speed, you need to use vacuum drying, and the vacuum drying process complex. There is also a problem in the method of spraying a thin layer of sulfur film on the surface of urea, and then using polyacrylate emulsion to coat the urea. The equipment and process for spraying the sulfur film are complicated, and the prepared coating Type slow-release fertilizers contain sulfur, and the soil quality of some application occasions does not want sulfur to enter the soil layer, so this method also has certain problems.

3. Contents of the invention

The object of the present invention is to provide an economical and effective water emulsion type and water solution type adhesive coating fertilizer method.

The technical solution that realizes the object of the present invention is: a kind of method that adopts water emulsion type and aqueous solution type adhesive coating fertilizer, comprises the following steps successively: the first step, adopts melt type and/or organic solution type coating liquid to fertilizer Coating is performed to form a hydrophobic organic film on the surface of the fertilizer; in the second step, the pre-coated fertilizer with a hydrophobic organic film on the surface is coated with an aqueous emulsion type and/or aqueous solution adhesive, and finally a coated fertilizer is obtained. slow release fertilizer. Wherein, the hydrophobic organic film layer can be a hydrophobic low molecular organic film layer, a hydrophobic polymer film layer or a composite film layer of a hydrophobic low molecular organic film layer and a hydrophobic polymer film layer, and the melting point of the hydrophobic low molecular organic film layer is Or softening point ≥ 76 ℃.

In the method of using water emulsion type and water solution type adhesive to coat fertilizer in the present invention, the hydrophobic low-molecular organic matter can be rosin esters with a softening point ≥ 76°C and mixtures thereof, and chlorinated paraffins with a melting point or softening point ≥ 76°C and mixtures thereof one or more of these.

In the method of the present invention adopting water emulsion type and aqueous solution type adhesive coating fertilizer, the hydrophobic polymer can be a hydrophobic thermoplastic polymer, also can be a hydrophobic thermosetting polymer, can also have both a hydrophobic thermoplastic polymer and a hydrophobic permanent thermosetting polymers. The hydrophobic thermosetting polymer can be polyurethane, epoxy resin, unsaturated polyester, phenolic resin, furan resin, unsaturated oleoresin, butadiene rubber, natural rubber, polyisoprene rubber, styrene-butadiene rubber, nitrile rubber One or more of butyl rubber, ethylene propylene rubber and EPDM rubber, etc. The hydrophobic thermoplastic polymer can be one of polyolefin and its copolymer, polystyrene and its copolymer, polyvinyl chloride and its copolymer, thermoplastic polyester, ABS resin, petroleum resin and coumarone-indene resin, etc. one or more species.

In the method of using water emulsion type and water solution type adhesive to coat fertilizer in the present invention, the water emulsion type adhesive used is a polymer emulsion adhesive, and the water solution type adhesive used can be a kind of water solution type polymer adhesive and water solution type inorganic adhesive or more.

In the method that the present invention adopts water emulsion type and aqueous solution type adhesive coating fertilizer, the polymer emulsion adhesive agent of coating can be polyacrylic acid ester and copolymer emulsion thereof, polyvinyl acetate and copolymer emulsion thereof, polystyrene and One or more of its copolymer emulsion, polyvinyl chloride and its copolymer emulsion, polyvinylidene chloride and its copolymer emulsion, polyolefin and its copolymer emulsion, epoxy resin emulsion and polyurethane emulsion, etc. The aqueous solution polymer adhesive used for coating may be one or more of amino resin prepolymer solution, polyvinyl alcohol and its copolymer acetal resin solution, and the like. The aqueous solution type inorganic adhesive used for coating may be one or more of phosphate adhesive, silicate adhesive and the like.

In the method of the present invention adopting the water emulsion type and the water solution type adhesive to coat the fertilizer, the thickness of the hydrophobic organic film layer can be 2-25 μm.

Compared with the prior art, the present invention has significant advantages. The method of water emulsion type and aqueous solution type adhesive coating fertilizer of the present invention can avoid that fertilizer enters in the coating film layer that forms when adopting the coating liquid of aqueous solution form or water emulsion form to carry out coating, and particularly coating process is simple, and water The normal pressure drying and dehydration temperature can be higher when the emulsion type and the aqueous solution type adhesive are coated, and the drying and film forming speed of the film layer is fast, so the process cost is low.

4. Specific implementation

The present invention adopts the method for coating fertilizer of water emulsion type and aqueous solution type adhesive, comprises the following steps successively: the first step, adopts melt type and/or organic solution type coating liquid to coat fertilizer, forms hydrophobicity on the surface of fertilizer Organic film layer; in the second step, the pre-coated fertilizer with a hydrophobic organic film layer on the surface is coated with a water emulsion type and/or aqueous solution type adhesive, and finally a coated slow-release fertilizer is obtained. Wherein, the hydrophobic organic film layer can be a hydrophobic low molecular organic film layer, a hydrophobic polymer film layer or a composite film layer of a hydrophobic low molecular organic film layer and a hydrophobic polymer film layer, and the melting point of the hydrophobic low molecular organic film layer is Or softening point ≥ 76 ℃.

In the method that the present invention adopts water emulsion type and aqueous solution type adhesive coating fertilizer, adopts organic solution type coating liquid to coat fertilizer to form hydrophobic organic matter film layer on the fertilizer surface, the organic in the organic solution type coating liquid The solvent should be selected from organic solvents with low solubility to fertilizers. For example, when using an organic solution-type coating solution to pre-coat urea, do not use organic solvents such as ethanol that are highly soluble to urea.

In the method of the present invention adopting water emulsion type and aqueous solution type adhesive coating fertilizer, the hydrophobic low-molecular organic matter adopted in the first step can be rosin esters with a softening point ≥ 76°C and mixtures thereof, and rosin esters with a melting point or softening point ≥ 76°C One or more of chlorinated paraffins and their mixtures, of course, can also be other hydrophobic low-molecular organic substances with melting point or softening point ≥ 76°C.

In the method of the present invention adopting water emulsion type and aqueous solution type adhesive coating fertilizer, the hydrophobic polymer can be a hydrophobic thermoplastic polymer, also can be a hydrophobic thermosetting polymer, can also have both a hydrophobic thermoplastic polymer and a hydrophobic permanent thermosetting polymers. The hydrophobic thermosetting polymer can be polyurethane, epoxy resin, unsaturated polyester, phenolic resin, furan resin, unsaturated oleoresin, butadiene rubber, natural rubber, polyisoprene rubber, styrene-butadiene rubber, nitrile rubber One or more of butyl rubber, ethylene propylene rubber and EPDM rubber. The hydrophobic thermoplastic polymer can be one of polyolefin and its copolymer, polystyrene and its copolymer, polyvinyl chloride and its copolymer, thermoplastic polyester, ABS resin, petroleum resin and coumarone-indene resin or more. Of course, other hydrophobic thermoplastic polymers and hydrophobic thermoset polymers that can be coated from the melt or from an organic solution can also be or be included. Among them, low-molecular-weight polymers are preferred, such as low-molecular-weight polyolefins such as polyethylene wax and polyisobutylene, and low-molecular-weight resins such as petroleum resins, coumarone-indene resins, styrene-indene resins, and aromatic hydrocarbon resins. Their molecular weight Low, when they are coated, the coating solution can be in the form of a melt or an organic solution with a low amount of organic solvent. At the same time, they are non-polar or very low in polarity. Membranes provide high barrier properties, of course their flow temperature should be ≥ 76°C. For non-polar or low-polar polymer emulsion (such as polyolefin and its copolymer emulsion, polystyrene and its copolymer emulsion) coated fertilizer, polyurethane, epoxy resin, unsaturated polyester, phenolic resin, furan resin And unsaturated oleoresin, etc. can be preferred, although the barrier properties of the film layer formed by them are not high, and cannot contribute to the barrier property of the entire coating, but the coating liquid used in their coating usually uses prepolymer , usually in the form of a melt, without the use of organic solvents. For highly polar polymer emulsions (such as polyacrylate and its copolymer emulsion, polyvinyl acetate and its copolymer emulsion, polyvinyl chloride and its copolymer emulsion, polyvinylidene chloride and its copolymer emulsion, etc.) Membrane fertilizer, polyolefin and its non-polar copolymers, polystyrene and its non-polar copolymers, butadiene rubber, natural rubber, polyisoprene rubber, styrene-butadiene rubber, butyl rubber can also be given priority And non-polar polymers such as ethylene-propylene rubber and EPDM rubber to form a hydrophobic film layer, although they need to use an organic solution for coating, but the barrier properties of the hydrophobic non-polar polymer film layer formed by them Very high, providing high barrier properties to the entire envelope. The organic solution of rubber polymers (such as butadiene rubber, natural rubber, polyisoprene rubber, styrene-butadiene rubber, nitrile rubber, butyl rubber, ethylene-propylene rubber and EPDM rubber, etc.) is used for coating. The formed hydrophobic film layer can be vulcanized (or cross-linked) or not vulcanized (or cross-linked).

Additives such as fillers may be contained in the hydrophobic organic film layer formed on the surface of the fertilizer when pre-coating the fertilizer. In the present invention, the mixture film layer of hydrophobic polymer and hydrophobic low-molecular organic matter is also regarded as hydrophobic polymer film layer. At this time, the melting point or softening point of the hydrophobic low-molecular organic matter in the mixture can be lower than 76 ° C, but the hydrophobic The flow temperature of the mixture of non-toxic polymer and hydrophobic low-molecular organic matter should be ≥ 76 ° C, where the flow temperature refers to the temperature that can flow obviously by its own weight.

In the method of using water emulsion type and water solution type adhesive to coat fertilizer in the present invention, both water emulsion type adhesive and water solution type adhesive can be used, water emulsion type adhesive and water solution type adhesive can also be used at the same time, it can be water emulsion type Mixed adhesive of adhesive and aqueous solution adhesive. The water emulsion adhesive used is a polymer emulsion adhesive. The aqueous solution adhesive used can be an aqueous solution polymer adhesive or an aqueous solution inorganic adhesive. Adhesives and water-based inorganic adhesives.

In the method that the present invention adopts water emulsion type and aqueous solution type adhesive to coat fertilizer, the polymer emulsion type adhesive that coating adopts can be polyacrylate and its copolymer emulsion, polyvinyl acetate and its copolymer emulsion, polystyrene One or more of polyvinyl chloride and its copolymer emulsion, polyvinyl chloride and its copolymer emulsion, polyvinylidene chloride and its copolymer emulsion, polyolefin and its copolymer emulsion, epoxy resin emulsion and polyurethane emulsion, etc. The aqueous solution polymer adhesive used for coating may be one or more of amino resin prepolymer solution, polyvinyl alcohol and its copolymer acetal resin solution, and the like. The aqueous solution type inorganic adhesive used for coating may be one or more of phosphate adhesive, silicate adhesive and the like. For example, the aqueous solution-type inorganic adhesive can be one or more of the following silicate adhesives: ① a mixed aqueous solution of sodium silicate and phosphoric acid with a modulus of 1 to 3; ② potassium silicate and phosphoric acid with a modulus of 1 to 3 Mixed aqueous solution; ③ SiO ₂ sol. The aqueous solution adhesive used can be a mixed adhesive of aqueous solution polymer adhesive and aqueous solution inorganic adhesive, for example, a mixed aqueous solution composed of polyvinyl alcohol (acetal) resin and potassium silicate, urea formaldehyde resin prepolymer and sodium silicate Mixed adhesives such as mixed aqueous solutions.

Of course, in the method of the present invention using water-emulsion-type and aqueous-solution-type adhesives to coat fertilizers, the water-emulsion-type adhesives and aqueous-solution-type adhesives used may contain additives such as fillers.

In the method of using water emulsion type and aqueous solution type adhesive to coat fertilizer in the present invention, the hydrophobic organic matter film layer pre-coated on the surface of the fertilizer only needs to be complete or basically complete, so its thickness does not require too high, usually 2～ 25 μm is enough. Of course, a larger thickness is also possible.

Some specific implementations of the method for coating fertilizers with water emulsion and water solution adhesives will be described below with individual examples of preparing coated slow-release urea by using water emulsion and water solution adhesives to coat industrial granular urea.

Example 1

Add granular industrial urea into the fluidized bed coating equipment, and keep the granular urea in a boiling state, and keep the temperature of the granular urea in the fluidized bed at 90°C. The mixture of 4,4-diphenylmethane diisocyanate MDI, triethanolamine and diethylene glycol (the molar ratio of triethanolamine in the mixture: diethylene glycol is 0.2: 1, and the molar ratio of -NCO: -OH is 1.1 : 1, containing a small amount of catalyst) sprayed on the surface of granular urea, and sprayed until the thickness of the polyurethane film layer formed reaches 15 μm. Then, spray the polystyrene emulsion on the surface of the polyurethane film until the thickness of the formed polystyrene film reaches 90 μm. Gradually raise the temperature to 100° C., fully dry to remove water in the film layer, and then prepare the slow-release urea coated with polystyrene emulsion.

Example 2

Add granular industrial urea to the drum coating equipment with a temperature control of 80°C, and rotate the drum (rotating speed 40r/min) to make the granular urea flow in the drum. Spray the melt of rosin ester (softening point: 100° C.) on the surface of granular urea until the thickness of the formed rosin ester film reaches 20 μm. Then raise the temperature of the granular urea in the drum to 95°C, and then spray the styrene-butadiene emulsion on the surface of the rosin ester film until the thickness of the styrene-butadiene copolymer film formed by the styrene-butadiene emulsion reaches 90 μm. The water in the film layer is fully dried to remove the slow-release urea coated with the styrene-butadiene emulsion.

Example 3

Add granular industrial urea to the drum coating equipment with a temperature control of 80°C, and rotate the drum (rotating speed 40r/min) to make the granular urea flow in the drum. Spray the polyethylene turpentine solution on the surface of the granular urea until it forms The thickness of the polyethylene film layer reaches 10μm. Then the temperature of the granular urea in the drum is raised to 95°C, and then sprayed with a polyvinyl formal resin aqueous solution and an aqueous solution of potassium silicate and phosphoric acid with a modulus of 1 to 3. Mix the aqueous solution on the surface of the polyethylene film layer, spray until the thickness of the polyvinyl formal resin and silicate composite film layer reaches 130 μm. Gradually raise the temperature to 100 ° C, fully dry to remove the water in the film layer, and make the polyvinyl alcohol The formal resin is fully cured and the silicate is fully gelled, that is, the slow-release film is prepared by using a mixed aqueous solution composed of a polyvinyl formal resin aqueous solution and an aqueous solution of potassium silicate and phosphoric acid with a modulus of 1-3. urea.

Example 4

Add granular industrial urea to the drum coating equipment with a temperature control of 65°C, and rotate the drum (rotating speed 40r/min) to make the granular urea flow in the drum. Spray the styrene-butadiene-styrene block copolymer cyclohexane solution on the surface of granular urea, spray until the thickness of the formed styrene-butadiene-styrene block copolymer film reaches 6 μm, fully dry and remove Cyclohexane in the film layer. Then the temperature of granular urea in the drum was raised to 95°C, and then sprayed with polyacrylate emulsion (copolymer emulsion of methyl acrylate and butyl acrylate, the molar ratio of methyl acrylate and butyl acrylate was 1:0.2) on benzene The surface of the ethylene-butadiene-styrene block copolymer film layer is sprayed until the thickness of the formed polyacrylate film layer reaches 110 μm. Gradually raise the temperature to 100°C, fully dry to remove the water in the film layer, and then prepare the slow-release urea coated with polyacrylate emulsion.

Example 5

Add granular industrial urea to the drum coating equipment with a temperature control of 70°C, and rotate the drum (rotating speed 40r/min) to make the granular urea flow in the drum. Slowly spray the melted petroleum resin (with a softening point of 100° C.) on the surface of the granular urea, and spray until the thickness of the formed petroleum resin film reaches 20 μm. Then raise the temperature of the granular urea in the drum to 95°C, and then spray polyvinyl acetate emulsion on the surface of the petroleum resin film until the thickness of the formed polyvinyl acetate film reaches 85 μm. Gradually raise the temperature to 98°C, fully dry to remove the water in the film layer, and then prepare the slow-release urea coated with polyvinyl acetate emulsion.

Example 6

Add granular industrial urea to the drum coating equipment with a temperature control of 70°C, and rotate the drum (rotating speed 40r/min) to make the granular urea flow in the drum. Slowly spray the turpentine solution of polyethylene wax (melting point is 105° C.) on the surface of granular urea until the thickness of the formed polyethylene wax film reaches 25 μm. Then raise the temperature of the granular urea in the drum to 95°C, and then spray the mixed aqueous solution of sodium silicate and phosphoric acid with a modulus of 1 to 3 on the surface of the polyethylene wax film until the thickness of the formed silicate film reaches 130 μm. Gradually raise the temperature to 100°C, fully dry to remove the water in the film layer, and fully gel the silicate, that is, prepare the slow-release urea coated with the mixed aqueous solution of sodium silicate and phosphoric acid with a modulus of 1-3.

Example 7

Add granular industrial urea to the drum coating equipment with a temperature control of 80°C, and rotate the drum (rotating speed 40r/min) to make the granular urea flow in the drum. Tung oil is sprayed on the granular urea surface until the thickness of the formed tung oil resin film layer reaches 15 μm, so that the tung oil resin film layer is properly cured. Then, the temperature of granular urea in the drum was raised to 95° C., and then the styrene-butadiene emulsion was sprayed on the surface of the tung oil resin film until the thickness of the styrene-butadiene copolymer film formed by the styrene-butadiene emulsion reached 90 μm. Fully dry to remove water in the film layer, and fully solidify the tung oil resin film layer, that is, prepare the slow-release urea coated with the styrene-butadiene emulsion.

Example 8

Add granular industrial urea to the drum coating equipment with a temperature control of 65°C, and rotate the drum (rotating speed 40r/min) to make the granular urea flow in the drum. Spray the solvent gasoline solution of styrene-butadiene rubber raw rubber on the surface of the granular urea , spray until the thickness of the formed styrene-butadiene rubber film layer reaches 15 μm. Then raise the temperature of the granular urea in the drum to 95°C, and then spray the styrene-butadiene emulsion on the surface of the styrene-butadiene rubber film layer until the styrene-butadiene emulsion The thickness of the formed styrene-butadiene copolymer film reached 90 μm. The water contained in the film was fully dried to prepare the slow-release urea coated with styrene-butadiene emulsion.

Example 9

Add granular industrial urea to the drum coating equipment with a temperature control of 70°C, and rotate the drum (rotating speed 40r/min) to make the granular urea flow in the drum. Slowly spray the melt of petroleum resin (with a softening point of 105° C.) on the surface of granular urea until the thickness of the formed petroleum resin film reaches 20 μm. Then raise the temperature of the granular urea in the drum to 95°C, and then spray the aqueous solution of urea-formaldehyde resin prepolymer on the surface of the petroleum resin film until the thickness of the formed urea-formaldehyde resin film reaches 100 μm. Gradually raise the temperature to 100° C., fully dry to remove water in the film layer, and then prepare slow-release urea coated with an aqueous solution of urea-formaldehyde resin prepolymer.

Example 10

Add granular industrial urea to the fluidized bed coating equipment, and keep the granular urea in a boiling state, and keep the temperature of the granular urea in the fluidized bed at 70°C. Slowly spray the melt of coumarone-indene resin (with a softening point of 80° C.) on the surface of granular urea until the thickness of the formed coumarone-indene resin film reaches 20 μm. Then, the temperature of the granular urea in the fluidized bed was raised to 78° C., and the polyvinyl chloride emulsion was sprayed on the surface of the coumarone-indene resin film until the thickness of the formed polyvinyl chloride film reached 80 μm. Blast drying fully removes water in the film layer, and then the slow-release urea coated with polyvinyl chloride emulsion is prepared.

The film-coated slow-release urea prepared in the above examples has basically no urea in the film layer formed by the water-emulsion-type and aqueous-solution-type adhesives, and the water resistance of the film is lower than that of the water-emulsion-type and aqueous-solution-type adhesives. The film layer formed by directly coating the urea has strong water resistance.

Claims (7)

1. a kind of method that adopts water emulsion type and/or aqueous solution type adhesive coating fertilizer, is characterized in that: comprise the following steps successively: In the first step, the fertilizer is coated with a melt-type and/or organic solution-type coating solution to form a hydrophobic organic film layer on the surface of the fertilizer; In the second step, the pre-coated fertilizer with a hydrophobic organic film layer on the surface is coated with an aqueous emulsion type and/or aqueous solution type adhesive, and finally a coated slow-release fertilizer is obtained; Wherein, the hydrophobic organic film layer is a hydrophobic low molecular organic film layer, a hydrophobic polymer film layer or a composite film layer of a hydrophobic low molecular organic film layer and a hydrophobic polymer film layer; the hydrophobic low molecular organic film layer is the softening point One or more of rosin esters ≥76°C and their mixtures and chlorinated paraffins with a melting point or softening point ≥76°C and their mixtures; hydrophobic polymers are hydrophobic thermoplastic polymers and/or hydrophobic thermosetting polymers , the hydrophobic thermoplastic polymer is polyolefin, polystyrene, polyvinyl chloride, ABS resin, polyethylene wax with flow temperature ≥76°C, polyisobutylene with flow temperature ≥76°C, petroleum resin with flow temperature ≥76°C, flow One or more of coumarone-indene resin with temperature ≥76°C, styrene-indene resin with flow temperature ≥76°C and aromatic hydrocarbon resin with flow temperature ≥76°C. 2. the method for adopting water emulsion type and/or aqueous solution type adhesive coating fertilizer according to claim 1, is characterized in that: hydrophobic thermosetting polymer is polyurethane, epoxy resin, unsaturated polyester, phenolic resin, furan One or more of resin, unsaturated oleoresin, butadiene rubber, natural rubber, polyisoprene rubber, styrene-butadiene rubber, nitrile rubber, butyl rubber, ethylene-propylene rubber and EPDM rubber. 3. The method according to claim 1, wherein the water-emulsion type adhesive and/or aqueous solution type adhesive is used to coat the fertilizer, characterized in that: the water-emulsion type adhesive used is a polymer emulsion adhesive. 4. the method for adopting water emulsion type and/or aqueous solution type adhesive coating fertilizer according to claim 3, is characterized in that: polymer emulsion adhesive is polyacrylate emulsion, polyvinyl acetate emulsion, polystyrene and its One or more of copolymer emulsion, polyvinyl chloride emulsion, polyvinylidene chloride emulsion, polyolefin emulsion, epoxy resin emulsion and polyurethane emulsion. 5. The method according to claim 1, wherein the water emulsion type and/or aqueous solution type adhesive coating fertilizer is characterized in that: the aqueous solution type adhesive used is an aqueous solution type polymer adhesive and/or an aqueous solution type inorganic adhesive. 6. the method for adopting water emulsion type and/or aqueous solution type adhesive coating fertilizer according to claim 5, is characterized in that: aqueous solution type polymer adhesive is amino resin prepolymer solution and polyvinyl alcohol and copolymer thereof One or more of the acetal resin solution; the aqueous solution type inorganic adhesive is one or more of the phosphate adhesive and the silicate adhesive. 7. The method for coating fertilizer with water emulsion type and/or water solution type adhesive according to any one of claims 1-6, characterized in that: the thickness of the hydrophobic organic film layer is 2-25 μm.