CN107473804A - Modified urine base manure and preparation method thereof and mixed fertilizer - Google Patents
Modified urine base manure and preparation method thereof and mixed fertilizer Download PDFInfo
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- CN107473804A CN107473804A CN201610402024.9A CN201610402024A CN107473804A CN 107473804 A CN107473804 A CN 107473804A CN 201610402024 A CN201610402024 A CN 201610402024A CN 107473804 A CN107473804 A CN 107473804A
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- base manure
- urine base
- modified
- water
- urine
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G5/00—Fertilisers characterised by their form
- C05G5/30—Layered or coated, e.g. dust-preventing coatings
- C05G5/37—Layered or coated, e.g. dust-preventing coatings layered or coated with a polymer
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G1/00—Mixtures of fertilisers belonging individually to different subclasses of C05
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/90—Mixtures of one or more fertilisers with additives not having a specially fertilising activity for affecting the nitrification of ammonium compounds or urea in the soil
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- Life Sciences & Earth Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Soil Sciences (AREA)
- Fertilizers (AREA)
Abstract
The invention discloses modified urine base manure of one kind and preparation method thereof and a kind of mixed fertilizer.The modified urine base manure of the present invention is core shell structure, to urinate base manure as nucleome, using water-soluble modified urea-formaldehyde resin as shell, is coated on the core surface.Its preparation method, including water-soluble modified urea-formaldehyde resin solution is coated on the surfaces that temperature is 50~70 DEG C of urine base manure, and the constant progress isothermal holding step of keeping temperature.Mixed fertilizer of the present invention includes the present invention urine base manure and nitro fertilizer of mixing.The modified urine base manure of the present invention can effectively completely cut off urine base manure and directly be contacted with other materials, avoid that unfavorable reaction and effect occurs；On the other hand itself can be degraded, and can adjust the rate of release of urine base manure, realize long-acting fertilizer efficiency, there is provided urinate the utilization rate of base manure.Mixed fertilizer of the present invention can avoid generation water reaction between the two, ensure the fertilizer efficiency of mixed fertilizer of the present invention, meanwhile, nitro fertilizer is used in mixed way to the hardened phenomenon that can improve soil with urine base manure.
Description
Technical field
The present invention relates to technical field of fertilizers, and in particular to modified urine base manure of one kind and preparation method thereof and mixed fertilizer.
Background technology
Urine base manure generally comprises the liquid materials such as ammonia, phosphoric acid, sulfuric acid, cleaning solution, and after chemical reaction generation viscosity is higher
Phosphorus ammonium, mixed slurry, the material bed for spraying into rolling such as sulphur ammonium formed.
Nitro-compound fertilizer is using ammonium nitrate as nitrogen source, and compound fertilizer raw material, N, P, K high concentration produced such as addition phosphorus, potassium are answered
Expect in Hefei.Not only contain nitrate nitrogen in its product but also contain ammonium nitrogen.Major product has ammonium nitrate phosphorus, ammonium nitrate phosphorus potassium.
And the growth of crops is then to need a great number of elements such as N P and K, therefore, growth and yield for crops are past
Base manure will be urinated toward needs and nitro fertilizer is used in combination, but during actually applying fertilizer, urine base manure and nitro is fertile direct
Can the reaction of generation water after being mixed.Therefore, it is necessary to be mixed again after urine base manure and nitro fertilizer are surface-treated.
Solves the method that nitro fertilizer and urine base manure mix at present, more from the coatings such as polyurethane resin, sulphur or hydrophobicity
Material coat, base manure material will be urinated and first wrapped up, then with nitro fertilizer mix together with, such nitro fertilizer and urine base manure material
Would not directly it contact and the reaction of generation water, but cost is higher, the coating of urine base product per ton after usual coating processing
Cost is more than 100 yuan, and product dissolution time is more than 30 minutes after being coated with hydrophobic material, and storage time is difficult to keep length
Long, generationization water reacts again for nitro fertilizer and urine base manure material after 2 months；And coated fertilizer in degraded in soil for up to 1 year,
Can have a negative impact to Soil Micro-environment.Another kind is to wrap up hydrophobic material such as coating oil, powder in fertiliser granulates surface, but
It is that coating isolation row is undesirable, stability is poor.
The content of the invention
It is an object of the invention to overcome the above-mentioned deficiency of prior art, there is provided the modified urine base manure of one kind and its preparation side
Method, with solve it is existing urine base manure coating stability it is poor, film layer difficult degradation, the high technical problem of cost.
Another object of the present invention is to provide a kind of mixed fertilizer, to solve existing urine base manure with nitro fertilizer mixed fertilizer to change
The technical problem of water reaction.
In order to realize foregoing invention purpose, an aspect of of the present present invention, there is provided the modified urine base manure of one kind.The modified urine base
Fertilizer is core shell structure, to urinate base manure as nucleome, using water-soluble modified urea-formaldehyde resin as shell, is coated on the core surface.
A kind of another aspect of the present invention, there is provided preparation method of modified urine base manure.The preparation method includes following
Step：
On the surfaces that water-soluble modified urea-formaldehyde resin solution is urinated to base manure coated in temperature for 50~70 DEG C, and keeping temperature is not
Become and carry out isothermal holding.
A kind of another aspect of the present invention, there is provided mixed fertilizer.The mixed fertilizer includes the urine base manure and nitro fertilizer of mixing,
Wherein, the urine base manure is the modified modified urine base manure urinated base manure or prepared by preparation method of the present invention of the present invention.
Compared with prior art, the water-soluble modified urea-formaldehyde tree for being coated on urine base manure surface contained by the modified urine base manure of the present invention
On the one hand lipid layer can effectively completely cut off urine base manure and directly be contacted with other materials, avoid that unfavorable reaction and effect occurs；It is another
Aspect itself can be degraded, and after being applied fertilizer, the degraded of itself can occur, and avoid to causing secondary pollution, prior
It is that with the degraded of water-soluble modified urea-formaldehyde resin layer, the rate of release of urine base manure can be adjusted, realize long-acting fertilizer efficiency, there is provided urine
The utilization rate of base manure.
Water-soluble modified urea-formaldehyde resin can be uniformly coated on urine base manure table by the preparation method of the modified urine base manure of the present invention
Face, the cladding to urinating base manure is realized, the reaction of unfavorable fertilizer efficiency occurs so as to realize isolation contact of the urine base manure with other materials,
The secondary pollution to environment is avoided, and realizes extension urine base manure fertilizer efficiency.In addition, preparation method of the present invention without special technique and
Equipment, therefore, this method technique are simple, are adapted to industrialized production, have saved energy consumption, reduced cost.
Mixed fertilizer of the present invention is because containing the modified urine base manure of the present invention, therefore, contained nitro is fertile and the present invention is modified urinates
It can effectively be completely cut off between base manure by water-soluble modified urea-formaldehyde resin layer, avoid generation water reaction between the two, ensure the present invention
The fertilizer efficiency of mixed fertilizer, meanwhile, nitro fertilizer is used in mixed way to the hardened phenomenon that can improve soil with urine base manure, there is provided the life of crops
Long quality.
Embodiment
In order that technical problems, technical solutions and advantageous effects to be solved by the present invention are more clearly understood, below in conjunction with
Embodiment, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only explaining
The present invention, it is not intended to limit the present invention.
The weight of Related Component noted in the disclosure of the embodiment of the present invention not only may refer to weight between each component
Proportionate relationship, the concrete content of each component can also be represented.Therefore, as long as according to specification relevant group of the embodiment of the present invention
The content divided is scaled up or reduced within specification of embodiment of the present invention scope of disclosure.Specifically, the present invention is real
It can be mass unit known to the chemical fields such as μ g, mg, g, kg to apply the weight described in a specification.
On the one hand, the embodiment of the present invention provides a kind of modified urine base manure containing isolation layer.The modified urine base manure is core
Shell structure, i.e., described shell are coated on the core surface, wherein, it is to urinate base manure as nucleome, with water-soluble modified urea-formaldehyde tree
Fat is shell.So, the embodiment of the present invention be modified urine base manure contained by water-soluble modified urea-formaldehyde resin layer on the one hand can effectively every
Urine base manure absolutely directly contacts with other materials, avoids urinating base manure generation unfavorable reaction and effect；On the other hand itself can quilt
Degraded, after being applied fertilizer, can occur the degraded of itself, avoid to causing secondary pollution, it is often more important that, with water-soluble modification
The degraded of Lauxite layer, the rate of release of urine base manure can be adjusted, realizes long-acting fertilizer efficiency, there is provided urinate the utilization rate of base manure.Its
In, for core shell structure when understanding because being the modified urine base manure unit structure of the pin present invention, the pattern of the unit structure is because as core
The pattern of body is different and different.When such as to urinate base manure nucleome be granule-morphology, the embodiment of the present invention is modified the unit structure of urine base manure
Pattern is also granule-morphology；When urine base manure nucleome is other patterns, the embodiment of the present invention is modified the unit structure pattern of urine base manure
Also it is other patterns.
In one embodiment, the water-soluble modified urea-formaldehyde resin as shell is that ureaformaldehyde is reacted into mol ratio less than 0.5, and
The ureaformaldehyde reaction later stage adds the Lauxite after fineness is modified less than the bentonite of 300 mesh.Wherein, by ureaformaldehyde reaction mole
Than referring to the mol ratio between urea and formaldehyde.In a particular embodiment, the bentonite is controlled in the water-soluble modified urea-formaldehyde
Weight percentage in resin is 0.5%-15%.From the modified water-soluble modified urea-formaldehyde resin can effectively improve every
Urine base manure absolutely is directly contacted with other materials to avoid urinating the effect that unfavorable reaction and effect occur for base manure；Also have simultaneously suitable
When automatic degradation rate, regulation urine base manure fertilizer efficiency.
In another embodiment, in Unit Weight, the weight ratio of the water-soluble modified urea-formaldehyde resin and the urine base manure
For (0.5~1.5)：100.By being controlled to the weight ratio of water-soluble modified urea-formaldehyde resin and the urine base manure, realize to water
Molten modified urea-formaldehyde resin thickness degree is controlled and adjusted, so as to realize the effect directly contacted with other materials to isolation urine base manure
Fruit and automatic degradation rate are controlled and adjusted, and both above-mentioned weight ratios, can significantly increase urine base manure and other materials
Isolation effect, and optimize automatic degradation rate.
On the other hand, correspondingly, the embodiment of the present invention additionally provides a kind of preparation method of above-mentioned modified urine base manure.The system
Preparation Method comprises the following steps：
On the surfaces that water-soluble modified urea-formaldehyde resin solution is urinated to base manure coated in temperature for 50~70 DEG C, and keeping temperature is not
Become and carry out isothermal holding.
In one embodiment, the water-soluble modified urea-formaldehyde resin in water-soluble modified urea-formaldehyde resin solution is implemented for the present invention above
Water-soluble modified urea-formaldehyde resin contained by the modified urine base manure of example.Particularly water-soluble modified urea-formaldehyde resin is that ureaformaldehyde is reacted into mol ratio
The Lauxite after fineness is modified less than the bentonite of 300 mesh is added less than 0.5, and in the ureaformaldehyde reaction later stage.Specific
In embodiment, it is 0.5%-15% to control weight percentage of the bentonite in the water-soluble modified urea-formaldehyde resin.Choosing
Isolation urine base manure can be effectively improved with the modified water-soluble modified urea-formaldehyde resin directly to contact to avoid urinating with other materials
The effect of unfavorable reaction and effect occurs for base manure；Also there is appropriate automatic degradation rate, the fertilizer efficiency of regulation urine base manure simultaneously.
In a further embodiment, the water-soluble modified urea-formaldehyde resin mass concentration in the water-soluble modified urea-formaldehyde resin solution is
50%-65%.Therefore, according to the water-soluble modified urea-formaldehyde resin solution of the concentration range, water-soluble modified urea-formaldehyde resin solution is pressed
According to water-soluble modified urea-formaldehyde resin solution be urinate base manure 0.5%~1%, preferably 0.5% ratio feeds intake coating to urine base manure
Cladding.The water-soluble modified urea-formaldehyde resin solution of the concentration can improve clad ratio of the water-soluble modified urea-formaldehyde resin to urine base manure, so as to
Assign the isolation effect of urine base manure and other materials after being wrapped by.In a particular embodiment, water-soluble modified urea-formaldehyde resin solution
The mode of coating cladding urine base manure is spray coating.It is of course also possible to use other application patterns are carried out at cladding to urine base manure
Reason, as long as being that by water-soluble modified urea-formaldehyde resin solution can carry out uniformly coating to urine base manure.
During water-soluble modified urea-formaldehyde resin solution is to urine base manure coating cladding, 50~70 DEG C of temperature for urinating base manure can
Additionally to be heated urine base manure to realize using heating system.Can also utilize fertilizer after the completion of base granulation of fertilizer to be urinated
Waste heat and by its stable 50~70 DEG C of keeping temperature, be modified urine base manure to reduce the embodiment of the present invention and prepare consumed energy
Consumption, reduce production cost.Take notice of in embodiment, the temperature for urinating base manure is 60 DEG C.
After cladding processing is carried out to urine base manure, keep 50~70 DEG C of stability constant, the 5~10 of the isothermal holding
Minute.Pass through isothermal holding so that water-soluble modified urea-formaldehyde resin solution solvent volatilization so that water-soluble modified urea-formaldehyde resin forms figure
Layer is coated on the surface of urine base manure.
Water-soluble modified urea-formaldehyde resin can be uniformly coated on urine by the preparation method that the embodiment of the present invention is modified urine base manure
Base manure surface, the reaction of unfavorable fertilizer efficiency occurs so as to realize isolation contact of the urine base manure with other materials, avoids to environment
Secondary pollution, and realize extension urine base manure fertilizer efficiency.In addition, therefore preparation method of the present invention, is somebody's turn to do without special technique and equipment
Method technique is simple, is adapted to industrialized production, has saved energy consumption, reduced cost.
Another aspect, on the basis of the embodiments of the present invention are modified urine base manure and preparation method thereof, the present invention is implemented
Example additionally provides a kind of mixed fertilizer.The mixed fertilizer includes the urine base manure and nitro fertilizer of mixing, wherein, the urine base manure is upper
State the modified urine base that the embodiment of the present invention is modified urine base manure or the preparation method preparation of urine base manure is modified by the embodiments of the present invention
Fertilizer.Therefore, effectively can be changed between the nitro fertilizer contained by mixed fertilizer of the embodiment of the present invention and the modified urine base manure of the present invention by water-soluble
Property the isolation of Lauxite layer, avoid between the two generation water react, ensure the fertilizer efficiency of mixed fertilizer of the present invention, meanwhile, by nitro
Fertilizer is used in mixed way the hardened phenomenon that can improve soil with urine base manure, there is provided the growth quality of crops.
In one embodiment, the weight ratio of the urine base manure in mixed fertilizer of the embodiment of the present invention and nitro fertilizer is (0.05
~20)：1.The ratio of control urine base manure and nitro fertilizer, the ratio of a great number of elements is adjusted, to improve the growth quality of crops, together
The hardened problem of Shi Gaishan soil.
In addition, the urine base manure in each embodiment and nitro fertilizer are that the conventional urine base manure in this area and nitro are fertile above,
Do not specially required in the present invention.Base manure is urinated as in a particular embodiment, in the various embodiments described above can be with but not just for urine base
17-6-8, urine base 15-15-15 etc., nitro fertilizer can be with but not just for nitro 15-15-15 etc..
Now by taking specific modified urine base manure and preparation method thereof and mixed fertilizer as an example, the present invention is carried out further specifically
It is bright.Wherein, in following each embodiments, water-soluble modified urea-formaldehyde resin is that ureaformaldehyde reaction mol ratio is less than into 0.5, and is reacted in ureaformaldehyde
Later stage adds the Lauxite after fineness is modified less than the bentonite of 300 mesh.
Embodiment 1
The present embodiment provides a kind of modified urine base manure and preparation method thereof.The modification urinates base manure to urinate base manure as nucleome,
Using water-soluble modified urea-formaldehyde resin as shell, the core surface is coated on.In Unit Weight, the water-soluble modified urea-formaldehyde resin
Weight ratio with the urine base manure is 0.0075：1.
The preparation method of modified urine base manure is as follows：
Choose 1 kilogram of urea-base composite fertilizer material, 60 degree are heated in drum device, from mass concentration be 50% it is water-soluble
Modified urea-formaldehyde solution, fed intake spraying by the 1.5% of inventory, after material heating, continuous heating 5~10 is coated in coating device
Minute.Product surface is smooth glossy after coating.
Embodiment 2
The present embodiment provides a kind of modified urine base manure and preparation method thereof.The modification urinates base manure to urinate base manure as nucleome,
Using water-soluble modified urea-formaldehyde resin as shell, the core surface is coated on.In Unit Weight, the water-soluble modified urea-formaldehyde resin
Weight ratio with the urine base manure is 0.0025：1.
1 kilogram of urine base 17-6-8 complex fertilizer is chosen, 60 degree are heated in drum device, is 50% from mass concentration
Water-soluble modified urea-formaldehyde solution, fed intake spraying by the 0.5% of inventory, after material heating, coated in coating device persistently plus
Heat 5~10 minutes.
Embodiment 3
The present embodiment provides a kind of modified urine base manure and preparation method thereof.The modification urinates base manure to urinate base manure as nucleome,
Using water-soluble modified urea-formaldehyde resin as shell, the core surface is coated on.In Unit Weight, the water-soluble modified urea-formaldehyde resin
Weight ratio with the urine base manure is 0.0055：1.
1 kilogram of urine base 17-6-8 complex fertilizer is chosen, 60 degree are heated in drum device, from the water that concentration is 55%
Molten modified urea-formaldehyde solution, fed intake spraying by the 1% of inventory, after material heating, continuous heating 5~10 is coated in coating device
Minute.
Embodiment 4
The present embodiment provides a kind of modified urine base manure and preparation method thereof.The modification urinates base manure to urinate base manure as nucleome,
Using water-soluble modified urea-formaldehyde resin as shell, the core surface is coated on.In Unit Weight, the water-soluble modified urea-formaldehyde resin
Weight ratio with the urine base manure is 0.0098：1.
1 kilogram of urine base 17-6-8 complex fertilizer is chosen, 60 degree are heated in drum device, from the water that concentration is 65%
Molten modified urea-formaldehyde solution, fed intake spraying by the 1.5% of inventory, after material heating, coated in coating device continuous heating 5~
10 minutes.
Mixed fertilizer embodiment
The modified urine base manure that above-described embodiment 1-4 is provided is respectively with nitro fertilizer according to (0.05-20)：1 ratio is carried out
Mixing.
Mixed fertilizer stability is tested
The modified urine base manure that above-described embodiment 1-4 is provided is respectively with nitro fertilizer according to (0.05~20)：1 ratio is carried out
After mixing, following performance test is carried out respectively：
1. stability experiment：Test method is by setting humiture in climatic chamber, then by the good fertilizer of mixture
Load in sealed bag, insert observation in climatic chamber and be re-weighed for a period of time, result of the test is as shown in table 1 below:
Table 1
It follows that can be effectively by water-soluble modified urea between nitro fertilizer provided in an embodiment of the present invention and modified urine base manure
Urea formaldehyde layer completely cuts off, and avoids generation water reaction between the two, stability is good, ensures the fertilizer efficiency of mixed fertilizer of the present invention.
2. extend fertilizer efficiency experiment：Following table is the change (SPAD) of tomato chlorophyll under different disposal, result of the test such as following table
2：
Table 2
The lower chlorophyll of the present embodiment processing is apparently higher than control and other processing as can be seen from Table 2.With over 60 days
See that the chlorophyll of the present embodiment processing is higher by comparative example No. 2 25.7%, be higher by comparative example 318.2%, illustrate that the present embodiment provides
Mixed fertilizer fertilizer efficiency length, later stage not de- fertilizer.
3. degradation experiment：Natural exposing method, water after 3 months is respectively adopted in the mixed fertilizer that above-mentioned mixed fertilizer embodiment provides
Molten modified urea-formaldehyde coat and fertilizer just disappeared, it was demonstrated that water-soluble modified urea-formaldehyde resin clad is degraded.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should be included in the scope of the protection.
Claims (10)
1. the modified urine base manure of one kind, it is characterised in that：It is core shell structure, to urinate base manure as nucleome, with water-soluble modified urea-formaldehyde
Resin is shell, is coated on the core surface.
2. modified urine base manure according to claim 1, it is characterised in that：The water-soluble modified urea-formaldehyde resin is that ureaformaldehyde is anti-
Answer mol ratio to be less than 0.5, and the ureaformaldehyde tree after fineness is modified less than the bentonite of 300 mesh is added in the ureaformaldehyde reaction later stage
Fat.
3. modified urine base manure according to claim 2, it is characterised in that：The bentonite is in the water-soluble modified urea-formaldehyde tree
Weight percentage in fat is 0.5%-15%.
4. the modified urine base manure according to claim 1-3, it is characterised in that：In Unit Weight, the water-soluble modified urea
The weight ratio of urea formaldehyde and the urine base manure is (0.5-1.5)：100.
5. a kind of preparation method of modified urine base manure, comprises the following steps：
By water-soluble modified urea-formaldehyde resin solution coated in temperature be 50~70 DEG C urine base manure surfaces on, and keeping temperature it is constant enter
Row isothermal holding.
6. preparation method according to claim 5, it is characterised in that：The water-soluble modified urea-formaldehyde resin solution is coated in institute
The amount guarantee on the surface of urine base manure is stated after the isothermal holding, the water-soluble modified urea-formaldehyde resin described in Unit Weight and institute
The weight ratio for stating urine base manure is (0.5%~1.5)：100；And/or
Water-soluble modified urea-formaldehyde resin in the water-soluble modified urea-formaldehyde resin solution is that ureaformaldehyde is reacted into mol ratio less than 0.5, and
The Lauxite after fineness is modified less than the bentonite of 300 mesh is added in the ureaformaldehyde reaction later stage.
7. preparation method according to claim 6, it is characterised in that：The bentonite is in the water-soluble modified urea-formaldehyde resin
In weight percentage be 0.5%-15%.
8. according to any described preparation methods of claim 5-7, it is characterised in that：5~10 minutes of the isothermal holding.
A kind of 9. mixed fertilizer, it is characterised in that：Urine base manure and nitro fertilizer including mixing, wherein, the urine base manure will for right
Ask any described modified urine base manure of 1-4 or the modified urine base manure prepared by any described preparation methods of claim 5-8.
10. mixed fertilizer according to claim 9, it is characterised in that：The weight of the urine base manure and modified urine base manure nitro fertilizer
It is (0.05~20) to measure ratio：1.
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| CN201610402024.9A CN107473804A (en) | 2016-06-08 | 2016-06-08 | Modified urine base manure and preparation method thereof and mixed fertilizer |
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| JPS61247678A (en) * | 1985-04-23 | 1986-11-04 | 関西ペイント株式会社 | Fertilizing material |
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| CN1884228A (en) * | 2006-07-07 | 2006-12-27 | 朱丙臣 | Coated degradable release-controlled fertilizer |
| CN101613244A (en) * | 2009-08-07 | 2009-12-30 | 中国-***化肥有限公司 | A kind of method that improves granulation performance of urine-based fertilizer |
| CN103030462A (en) * | 2012-12-12 | 2013-04-10 | 四川好时吉化工有限公司 | Water-soluble urea-formaldehyde glue and preparation method thereof as well as method for improving strength of water-soluble compound fertilizer granule by water-soluble urea-formaldehyde glue |
| CN104926444A (en) * | 2015-06-05 | 2015-09-23 | 宁夏共享生物化工有限公司 | Method for preparing slow/controlled release fertilizer by use of modified urea resin coating material |
| CN105330494A (en) * | 2015-11-13 | 2016-02-17 | 深圳市芭田生态工程股份有限公司 | Sulphur coated urea capable of preventing coating layer from breaking and preparation method thereof |
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2016
- 2016-06-08 CN CN201610402024.9A patent/CN107473804A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61247678A (en) * | 1985-04-23 | 1986-11-04 | 関西ペイント株式会社 | Fertilizing material |
| CN1074206A (en) * | 1993-01-14 | 1993-07-14 | 北京化工学院 | Coated slow release fertilizer and method for making thereof |
| CN1884228A (en) * | 2006-07-07 | 2006-12-27 | 朱丙臣 | Coated degradable release-controlled fertilizer |
| CN101613244A (en) * | 2009-08-07 | 2009-12-30 | 中国-***化肥有限公司 | A kind of method that improves granulation performance of urine-based fertilizer |
| CN103030462A (en) * | 2012-12-12 | 2013-04-10 | 四川好时吉化工有限公司 | Water-soluble urea-formaldehyde glue and preparation method thereof as well as method for improving strength of water-soluble compound fertilizer granule by water-soluble urea-formaldehyde glue |
| CN104926444A (en) * | 2015-06-05 | 2015-09-23 | 宁夏共享生物化工有限公司 | Method for preparing slow/controlled release fertilizer by use of modified urea resin coating material |
| CN105330494A (en) * | 2015-11-13 | 2016-02-17 | 深圳市芭田生态工程股份有限公司 | Sulphur coated urea capable of preventing coating layer from breaking and preparation method thereof |
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Application publication date: 20171215 |