CN104163728A - Double-coated long-acting controlled-release fertilizer and preparation method thereof - Google Patents
Double-coated long-acting controlled-release fertilizer and preparation method thereof Download PDFInfo
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- CN104163728A CN104163728A CN201410447354.0A CN201410447354A CN104163728A CN 104163728 A CN104163728 A CN 104163728A CN 201410447354 A CN201410447354 A CN 201410447354A CN 104163728 A CN104163728 A CN 104163728A
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Abstract
The invention discloses a double-coated long-acting controlled-release fertilizer and a preparation method thereof. The preparation method comprises the following steps: sequentially spraying a coating liquid containing polyglutamic acid and a resin coating liquid on the fertilizer core surface made of common fertilizer, and respectively forming a coated film. Compared with the prior art, the double-coated long-acting controlled-release fertilizer can keep stable release rate in the whole nutrient slow-release process, and has higher utilization ratio than the existing coated controlled-release fertilizer.
Description
Technical field
The invention belongs to field of fertilizer production, specifically relate to a kind of double-contracting film long-effect slow-release or control-release fertilizer and preparation method thereof.
Background technology
China is large agricultural country, Yi Shi chemical fertilizer consumption big country, and fertilizer consumption total amount occupies the world.But this season utilization ratio of the chemical fertilizer that China is used is lower.The loss of a large amount of fertilizer, not only causes huge financial loss, but also can cause serious environmental pollution.Therefore, be the requirement of adapt to development modern agriculture, overcome the bottleneck of resource environment constraint, under the prerequisite that ensures grain yield, reduce that chemical fertilizer drops into, improves utilization rate of fertilizer, protection of the environment is the urgent task that agricultural faces.Slow Controlled Release Fertilizer, by the progressively slowly-releasing of fertilizer, has reduced fertilizer loss, has improved fertilizer utilization, has just in time catered to this demand.
Existing sustained-controll-release fertiliser is taking film-coated controlled release fertilizer as main, and coating class sustained-controll-release fertiliser is made up of fertile core+coating layer.Although coating class slow-release or control-release fertilizer is in the market of a great variety, nutrient still discharges too fast in early stage of slowly-releasing process and mid-term, reduced utilization rate of fertilizer, has caused a large amount of wastes.Therefore being badly in need of developing a kind of nutrient release more meets plant nutrient absorption demand, utilizes more efficient coating class slow-release or control-release fertilizer.
Summary of the invention
The technical problem to be solved in the present invention is too fast in early stage and the release in mid-term of nutrient slowly-released process for existing coating class Controlled Release Fertilizer, and the present situation that utilization rate of fertilizer still reduces, develops a kind of double-contracting film long-effect slow-release or control-release fertilizer.
The technical problem that the present invention also will solve is to provide a kind of preparation method of double-contracting film long-effect slow-release or control-release fertilizer.
For solving the problems of the technologies described above, the technical solution used in the present invention is as follows:
A kind of double-contracting film long-effect slow-release or control-release fertilizer, it comprises fertile core, polyglutamic acid coating and coated with resin from the inside to the outside.
Wherein, fertile core fertilizer releasing period is 1-12 month.
Wherein, double-contracting film long-effect slow-release or control-release fertilizer of the present invention can regulate according to membrane wrapping thickness, can accurately not be controlled at 1 month to 12 months not etc.:
When polyglutamic acid film thickness is 0.1～0.5mm, and coated with resin thickness is while being 0.1mm～0.3mm, and fertile core fertilizer releasing period is 1～3 month;
When polyglutamic acid film thickness is 0.1～0.5mm, and coated with resin thickness is while being 0.3mm～0.5mm, and fertile core fertilizer releasing period is 3～6 months;
When polyglutamic acid film thickness is 0.1～0.5mm, and coated with resin thickness is while being 0.5mm～0.7mm, and fertile core fertilizer releasing period is 6～9 months;
When polyglutamic acid film thickness is 0.1～0.5mm, and coated with resin thickness is while being 0.7mm～0.9mm, and fertile core fertilizer releasing period is 9～12 months.
Wherein, described fertile core is to be made up of main fertilizer and auxiliary material, described main fertilizer comprises any one or a few the combination in nitrogenous fertilizer, phosphate fertilizer and potash fertilizer, preferably the combination of any one or a few in urea, bicarbonate of ammonia, ammonium nitrate, ammonium sulfate, diammonium phosphate, primary ammonium phosphate, potassium sulfate, Repone K or nitrophosphate fertilizer.Described auxiliary material is any one or a few the combination in xanthohumic acid, wooden sodium sulfonate, rhombspar, Paris white, attapulgite and diatomite.
Wherein, described polyglutamic acid coating, is to be made by the coating liquid evaporate to dryness containing polyglutamic acid, wherein, the molecular-weight average of described polyglutamic acid is 5-3000KDa, and preferred polyglutamic acid molecular-weight average is 5-1000KDa, and most preferred polyglutamic acid molecular-weight average is 5-500KDa.Described polyglutamic acid is any one or a few the combination in polyglutamic acid sterling, polyglutamate sterling, the fermenting culture that comprises polyglutamic acid, polyglutamic acid solution and the wettable powder that contains polyglutamic acid.
Polyglutamate sterling the has comprised chelating polyglutamate of one or more elements such as Na, K, Ca, Mn, Cu, Zn, Fe.
Polyglutamic acid solution comprises the aqueous solution of polyglutamic acid gel solution, polyglutamic acid or polyglutamate sterling.
The pulvis that contains polyglutamic acid comprises the dry thing of the powdery of polyglutamic acid fermented liquid, polyglutamic acid sterling or polyglutamate sterling and the formulated combination pulvis of other adjunct ingredients.
The fermenting culture that comprises polyglutamic acid comprises that including polyglutamic acid produces bacterial strain and the polyglutamic acid fermented liquid of fermention medium, concentrated solution or the dry thing of polyglutamic acid fermented liquid.
The related products of above-mentioned polyglutamic acid all can be bought from market or prepare according to prior art.
The preferred gamma-polyglutamic acid-of polyglutamic acid of the present invention.
Wherein, in described coated with resin, resin used is one or more of polyvinyl resin, epoxy resin and urethane.
Wherein, the thousandth that polyglutamic acid coating layer quality accounts for total mass is to one of percentage, and coated with resin layer quality accounts for one of percentage of total mass to 1/10th.
The preparation method of above-mentioned double-contracting film long-effect slow-release or control-release fertilizer, it comprises the steps:
(1) fertile core is added rotary drum fluid-bed in, pass into the air of 50-80 DEG C, rotate rotary drum fluid-bed in, will spray on fertiliser granulates containing the coating liquid of polyglutamic acid, coating liquid is evaporate to dryness in warm air, and forming the first tunic at fertile wicking surface is polyglutamic acid coating;
(2) in step (1) fertilizer of gained cooling after, coated with resin liquid is sprayed on to particle surface, cooling rear formation the second tunic is coated with resin.
Wherein, the described coating liquid formula containing polyglutamic acid is for to be dissolved in 1g polyglutamic acid in 50ml to 1000ml water.
Wherein, described coated with resin liquid formula is that 20g resin is dissolved in the organic solvent of 100～2000g under 125 DEG C～135 DEG C conditions, the molecular weight of resin is 10,000 to 100,000 dalton, and organic solution is one or more in industrial acetone, dihydroxyphenyl propane, industrial paraffin oil and dimethylbenzene.
Principle of the present invention is as follows:
Polyglutamic acid has larger molecular weight with respect to the fertilizer in fertile core, and the polyglutamic acid layer that is therefore wrapped in fertile wicking surface can partly be blocked the release aperture of outermost resin dressing, reduces the rate of release of fertilizer.Along with the degraded of polyglutamic acid, the release rate of fertilizer is accelerated gradually.In the polyglutamic acid discharging together with fertilizer, due to the existence of a large amount of carboxylate radicals, can the free nitrogen element of chelating, play the effect in nitrogen storehouse, further reduce the release of fertilizer, thereby realized super long effective controlled release.The adding of auxiliary material component in fertile core, enhancing fertilizer efficiency and part slow release effect are played.In addition, polyglutamic acid itself can play plant-growth regulator, plays the degeneration-resistant effect of growth-promoting.
Beneficial effect: compared with prior art, the present invention has following advantage:
(1) the double-contracting film long-effect slow-release or control-release fertilizer in the present invention, in nutrient slowly-released whole process, all can keep mild release rate, and utilization rate of fertilizer is higher than existing coating class slow-release or control-release fertilizer.
(2) the nutrient controlled release phase of the double-contracting film long-effect slow-release or control-release fertilizer in the present invention can regulate according to membrane wrapping thickness and mould material formula, can accurately not be controlled at 1 month to 12 months not etc.
(3) the polyglutamic acid component of adding in the present invention itself can play plant-growth regulator, plays the degeneration-resistant effect of growth-promoting.
Brief description of the drawings
Fig. 1 is T in embodiment 8
6the nutrients accumulation release profiles of fertilizer (being fertilizer of the present invention) in 25 DEG C of water.
Embodiment
According to following embodiment, the present invention may be better understood.But, those skilled in the art will readily understand, the described content of embodiment is only for the present invention is described, and should also can not limit the present invention described in detail in claims.
Embodiment 1
Raw material:
Nitrogenous is the granular urea 850g of 46.3wt%, auxiliary material xanthohumic acid 75g, the 75g of auxiliary material wooden sodium sulfonate, polyvinyl resin 15g, industrial acetone 1000ml, polyglutamic acid 1g, water 150ml.
Preparation method:
(1) polyvinyl resin and industrial acetone are put into stirrer, material is fully dissolved, make polyvinyl resin coating liquid 1000ml; 1g polyglutamic acid is dissolved in 150ml water, forms polyglutamic acid solution; By even in stirrer for mixing to 850g granular urea and 150g auxiliary material, obtain the fertile core of 1000g.
(2) pack fertile 1000g core into fluidized-bed, make it in fluidized state, pass into the warm air of 50-80 DEG C, rotate rotary drum fluid-bed in, uniformly spray on fertiliser granulates at the polyglutamic acid solution configuring.Solution is quick evaporate to dryness in warm air, forms uniform polyglutamic acid coating at fertile wicking surface.
(3) after polyglutamic sorrel is cooling, by polyvinyl resin coating liquid by atomizer atomization after, uniformly spray the particle surface in fluidized state, cooling rear formation double-contracting film long-effect slow-release or control-release fertilizer.
Can install additional and reclaim organic solution device to reclaim industrial acetone at the air exhausting device end of fluidized-bed.
Embodiment 2
Raw material:
Containing N-P
2o
5-K
2the macrobead composite fertilizer 850g of O: weight ratio 15-15-15, auxiliary material rhombspar 75g, auxiliary material Paris white 75g, epoxy resin 15g, industrial paraffin oil 500ml, dihydroxyphenyl propane 500ml, polyglutamic acid 0.7g, water 150ml.
Preparation method:
(1) epoxy resin and industrial paraffin oil are put into stirrer with dihydroxyphenyl propane, material is fully dissolved, make polyvinyl resin coating liquid 1000ml; 0.7g polyglutamic acid is dissolved in 150ml water, forms polyglutamic acid solution; By even in stirrer for mixing to 850g granular urea and 150g auxiliary material, obtain the fertile core of 1000g.
(2) pack fertile 1000g core into fluidized-bed, make it in fluidized state, pass into the warm air of 50-80 DEG C, rotate rotary drum fluid-bed in, uniformly spray on fertiliser granulates at the polyglutamic acid solution configuring.Solution is quick evaporate to dryness in warm air, forms uniform polyglutamic acid coating at fertile wicking surface.
(3) after polyglutamic sorrel is cooling, by polyvinyl resin coating liquid by atomizer atomization after, uniformly spray the particle surface in fluidized state, cooling rear formation double-contracting film long-effect slow-release or control-release fertilizer.
Can install additional and reclaim organic solution device to reclaim dihydroxyphenyl propane at the air exhausting device end of fluidized-bed.
Embodiment 3
Raw material:
Containing N-P
2o
5-K
2the macrobead composite fertilizer 850g of O: weight ratio 30-10-10, auxiliary material attapulgite 150g, urethane 15g, industrial paraffin oil 800ml, dimethylbenzene 200ml, polyglutamic acid 1g, water 150ml.
Preparation method:
(1) urethane, industrial paraffin oil and dimethylbenzene are put into stirrer, material is fully dissolved, make polyvinyl resin coating liquid 1000ml; 1g polyglutamic acid is dissolved in 150ml water, forms polyglutamic acid solution; By even in stirrer for mixing to 850g granular urea and 150g auxiliary material, obtain the fertile core of 1000g.
(2) pack fertile 1000g core into fluidized-bed, make it in fluidized state, pass into the warm air of 50-80 DEG C, rotate rotary drum fluid-bed in, uniformly spray on fertiliser granulates at the polyglutamic acid solution configuring.Solution is quick evaporate to dryness in warm air, forms uniform polyglutamic acid coating at fertile wicking surface.
(3) after polyglutamic sorrel is cooling, by polyvinyl resin coating liquid by atomizer atomization after, uniformly spray the particle surface in fluidized state, cooling rear formation double-contracting film long-effect slow-release or control-release fertilizer.
Can install additional and reclaim organic solution device to reclaim industrial paraffin oil and dimethylbenzene at the air exhausting device end of fluidized-bed.
Embodiment 4
Raw material:
Containing N-P
2o
5-K
2the macrobead composite fertilizer 850g of O: weight ratio 20-20-20, auxiliary material xanthohumic acid 75g, auxiliary material attapulgite 75g, polyvinyl resin 15g, industrial acetone 1000ml, polyglutamic acid 1g, water 150ml.
Preparation method:
(1) polyvinyl resin and industrial acetone are put into stirrer, material is fully dissolved, make polyvinyl resin coating liquid 1000ml; 1g polyglutamic acid is dissolved in 150ml water, forms polyglutamic acid solution; By even in stirrer for mixing to 850g granular urea and 150g auxiliary material, obtain the fertile core of 1000g.
(2) pack fertile 1000g core into fluidized-bed, make it in fluidized state, pass into the warm air of 50-80 DEG C, rotate rotary drum fluid-bed in, uniformly spray on fertiliser granulates at the polyglutamic acid solution configuring.Solution is quick evaporate to dryness in warm air, forms uniform polyglutamic acid coating at fertile wicking surface.
(3) after polyglutamic sorrel is cooling, by polyvinyl resin coating liquid by atomizer atomization after, uniformly spray the particle surface in fluidized state, cooling rear formation double-contracting film long-effect slow-release or control-release fertilizer.
Can install additional and reclaim organic solution device to reclaim industrial acetone at the air exhausting device end of fluidized-bed.
Embodiment 5
Raw material:
Containing N-P
2o
5-K
2the macrobead composite fertilizer 850g of O: weight ratio 19-7-14, auxiliary material xanthohumic acid 75g, auxiliary material diatomite 75g, polyvinyl resin 15g, industrial acetone 1000ml, polyglutamic acid 1g, water 150ml.
Preparation method:
(1) polyvinyl resin and industrial acetone are put into stirrer, material is fully dissolved, make polyvinyl resin coating liquid 1000ml; 0.7g polyglutamic acid is dissolved in 150ml water, forms polyglutamic acid solution; By even in stirrer for mixing to 850g granular urea and 150g auxiliary material, obtain the fertile core of 1000g.
(2) pack fertile 1000g core into fluidized-bed, make it in fluidized state, pass into the warm air of 50-80 DEG C, rotate rotary drum fluid-bed in, uniformly spray on fertiliser granulates at the polyglutamic acid solution configuring.Solution is quick evaporate to dryness in warm air, forms uniform polyglutamic acid coating at fertile wicking surface.
(3) after polyglutamic sorrel is cooling, by polyvinyl resin coating liquid by atomizer atomization after, uniformly spray the particle surface in fluidized state, cooling rear formation double-contracting film long-effect slow-release or control-release fertilizer.
Can install additional and reclaim organic solution device to reclaim industrial acetone at the air exhausting device end of fluidized-bed.
Embodiment 6
Raw material:
Containing N-P
2o
5-K
2the macrobead composite fertilizer 850g of O: weight ratio 26-10-15, the 75g of auxiliary material wooden sodium sulfonate, auxiliary material diatomite 75g, polyvinyl resin 15g, industrial acetone 1000ml, polyglutamic acid 1g, water 150ml.
Preparation method:
(1) polyvinyl resin and industrial acetone are put into stirrer, material is fully dissolved, make polyvinyl resin coating liquid 1000ml; 0.7g polyglutamic acid is dissolved in 150ml water, forms polyglutamic acid solution; By even in stirrer for mixing to 850g granular urea and 150g auxiliary material, obtain the fertile core of 1000g.
(2) pack fertile 1000g core into fluidized-bed, make it in fluidized state, pass into the warm air of 50-80 DEG C, rotate rotary drum fluid-bed in, uniformly spray on fertiliser granulates at the polyglutamic acid solution configuring.Solution is quick evaporate to dryness in warm air, forms uniform polyglutamic acid coating at fertile wicking surface.
(3) after polyglutamic sorrel is cooling, by polyvinyl resin coating liquid by atomizer atomization after, uniformly spray the particle surface in fluidized state, cooling rear formation double-contracting film long-effect slow-release or control-release fertilizer.
Can install additional and reclaim organic solution device to reclaim industrial acetone at the air exhausting device end of fluidized-bed.
Embodiment 7
According to standard GB/T/T 23348-2009, the fertilizer releasing period of fertilizer is measured.Test fertilizer is containing N-P
2o
5-K
2o: weight ratio 20-20-20, auxiliary material attapulgite 75g, auxiliary material Paris white 75g.Prepare the double-contracting film long-effect slow-release or control-release fertilizer in the present invention according to technique described in the present invention.The thickness of controlling polyglutamic acid coating be 0.1mm～0.5mm polyvinyl resin membrane wrapping thickness according to the addition of polyglutamic acid, control as 0.1mm～0.9mm.Measure as slowly-releasing nutrient using nitrogenous fertilizer, by fertilizer lixiviate in 25 DEG C of hydrostatic of preparation, calculate the fertilizer releasing period of nitrogenous fertilizer according to the formula in standard GB/T/T 23348-2009, test-results is summarized as follows:
When polyglutamic acid film thickness is 0.1～0.5mm, and coated with resin thickness is while being 0.1mm～0.3mm, and fertile core fertilizer releasing period is 1～3 month;
When polyglutamic acid film thickness is 0.1～0.5mm, and coated with resin thickness is while being 0.3mm～0.5mm, and fertile core fertilizer releasing period is 3～6 months;
When polyglutamic acid film thickness is 0.1～0.5mm, and coated with resin thickness is while being 0.5mm～0.7mm, and fertile core fertilizer releasing period is 6～9 months;
When polyglutamic acid film thickness is 0.1～0.5mm, and coated with resin thickness is while being 0.7mm～0.9mm, and fertile core fertilizer releasing period is 9～12 months.
Embodiment 8
Taking paddy rice as experimental subjects, rice varieties is No. 9, Su Xiu.4 processing, T are established in test
1for common fertilizer processing, be N-P
2o
5-K
2the treatment group of the macrobead composite fertilizer of O:20-20-20; T
2for the treatment group not using containing coated with resin slow-release or control-release fertilizer and the direct blending of polyglutamic acid of polyglutamic acid that the inventive method makes, consumption is identical with common fertilizer, and wherein, the composite ratio of polyglutamic acid is same as the amount of polyglutamic acid in double-contracting film long-effect slow-release or control-release fertilizer; T
3for the treatment group without coated with resin processing that the inventive method makes, only there is polyglutamic acid coating layer, consumption is identical with common fertilizer; T
4for polyglutamic acid, composite fertilizer, auxiliary material are evenly mixed and made into fertile core, then through method spraying coated with resin layer of the present invention, the consumption of each component is all same as the consumption of each component in double-contracting film long-effect slow-release or control-release fertilizer; T
5the elder generation making for the inventive method is through coated with resin processing, then through the treatment group of polyglutamic acid coating, consumption is identical with common fertilizer, and wherein polyglutamic acid, the composite ratio of resin are same as the amount in double-contracting film long-effect slow-release or control-release fertilizer; T
6for the double-contracting film long-effect slow-release or control-release fertilizer treatment group of preparing according to the embodiment of the present invention 4, consumption is identical with common fertilizer, and in fertile core, fertilizer is N-P
2o
5-K
2the macrobead composite fertilizer of O:20-20-20; T
7for at T
6on the basis of total usage quantity, reduce by 20% treatment group.Common fertilizer is used custom point base manure and topdresses by peasant, and other fertilizer are turned over to drop back at rice terrace and executed, through raking the soil level fertilizer and mixing with soil.Each processing repeats for 3 times, zone leader 8m, wide 3m, community area 24m
2, community surrounding arranges protection row.The data of gained are as shown in the table.
Table 1. is respectively processed output on paddy rice and the impact of constituent element thereof
T
6with T
1compare and increased production 51.1%, the effect of visible double-contracting film long-effect slow-release or control-release fertilizer is remarkable.T
3with T
1compare, output only has small size lifting, because there is not the slow releasing function of coated with resin layer, nutrient discharges rapidly.T
2, T
4, T
5with T
1compare, output also improves, but is far worse than T
6effect, illustrate in the time that polyglutamic acid is applied with capsule form just can and coated with resin layer produce synergistic effect, and the order of both coatings should be polyglutamic acid layer-coated with resin layer from the inside to the outside.
As can be seen here, the synergy of the outer coating of polyglutamic acid internal layer coating and resin just, extend fertilizer efficiency, improve the utilization ratio of fertilizer, make the release of fertilizer nutrient more meet the needs of plant growth, make to test paddy rice and be all enhanced aspect number of productive ear, thousand seed weight and output.
Claims (10)
1. a double-contracting film long-effect slow-release or control-release fertilizer, is characterized in that, it comprises fertile core, polyglutamic acid coating and coated with resin from the inside to the outside.
2. a kind of double-contracting film long-effect slow-release or control-release fertilizer according to claim 1, is characterized in that, fertile core fertilizer releasing period is 1～12 month.
3. a kind of double-contracting film long-effect slow-release or control-release fertilizer according to claim 2, is characterized in that,
When polyglutamic acid film thickness is 0.1～0.5mm, and coated with resin thickness is while being 0.1mm～0.3mm, and fertile core fertilizer releasing period is 1～3 month;
When polyglutamic acid film thickness is 0.1～0.5mm, and coated with resin thickness is while being 0.3mm～0.5mm, and fertile core fertilizer releasing period is 3～6 months;
When polyglutamic acid film thickness is 0.1～0.5mm, and coated with resin thickness is while being 0.5mm～0.7mm, and fertile core fertilizer releasing period is 6～9 months;
When polyglutamic acid film thickness is 0.1～0.5mm, and coated with resin thickness is while being 0.7mm～0.9mm, and fertile core fertilizer releasing period is 9～12 months.
4. a kind of double-contracting film long-effect slow-release or control-release fertilizer according to claim 1, is characterized in that, described fertile core is to be made up of main fertilizer and auxiliary material, and described main fertilizer comprises any one or a few the combination in nitrogenous fertilizer, phosphate fertilizer and potash fertilizer; Described auxiliary material is any one or a few the combination in xanthohumic acid, wooden sodium sulfonate, rhombspar, Paris white, attapulgite and diatomite.
5. a kind of double-contracting film long-effect slow-release or control-release fertilizer according to claim 1, it is characterized in that, described polyglutamic acid coating, to be made by the coating liquid evaporate to dryness containing polyglutamic acid, wherein, the molecular-weight average of described polyglutamic acid is 5-3000KDa, and described polyglutamic acid is any one or a few the combination in polyglutamic acid sterling, polyglutamate sterling, the fermenting culture that comprises polyglutamic acid, polyglutamic acid solution and the wettable powder that contains polyglutamic acid.
6. a kind of double-contracting film long-effect slow-release or control-release fertilizer according to claim 1, is characterized in that, in described coated with resin, resin used is one or more of polyvinyl resin, epoxy resin and urethane.
7. a kind of double-contracting film long-effect slow-release or control-release fertilizer according to claim 1, is characterized in that, the thousandth that polyglutamic acid coating layer quality accounts for total mass is to one of percentage, and coated with resin layer quality accounts for one of percentage of total mass to 1/10th.
8. the preparation method of a kind of double-contracting film long-effect slow-release or control-release fertilizer claimed in claim 1, is characterized in that, it comprises the steps:
(1) fertile core is added rotary drum fluid-bed in, pass into the air of 50-80 DEG C, rotate rotary drum fluid-bed in, will spray on fertiliser granulates containing the coating liquid of polyglutamic acid, coating liquid is evaporate to dryness in warm air, and forming the first tunic at fertile wicking surface is polyglutamic acid coating;
(2) in step (1) fertilizer of gained cooling after, coated with resin liquid is sprayed on to particle surface, cooling rear formation the second tunic is coated with resin.
9. preparation method according to claim 8, is characterized in that, the described coating liquid formula containing polyglutamic acid is for to be dissolved in 1g polyglutamic acid in 50ml to 1000ml water.
10. preparation method according to claim 8, it is characterized in that, described coated with resin liquid formula is that 20g resin is dissolved in the organic solvent of 100～2000g under 125 DEG C～135 DEG C conditions, the molecular weight of resin is 10,000 to 100,000 dalton, and organic solution is one or more in industrial acetone, dihydroxyphenyl propane, industrial paraffin oil and dimethylbenzene.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100999427A (en) * | 2006-12-31 | 2007-07-18 | 沈阳农业大学 | Film coated control release composite fertilizer special for regetables and its making method |
| CN101003454A (en) * | 2006-01-19 | 2007-07-25 | 南京理工大学 | Composite sulfur enveloped slow release fertilizer |
| CN101357872A (en) * | 2008-09-24 | 2009-02-04 | 杨晓玲 | Membrane wrapping sustained-release urea and producing method thereof |
| CN102875235A (en) * | 2012-10-17 | 2013-01-16 | 中国农业科学院农业资源与农业区划研究所 | Coated synergistic nitrogen fertilizer composition and preparation method thereof |
-
2014
- 2014-09-03 CN CN201410447354.0A patent/CN104163728B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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