CN101229985A - Chitosan coated controlled release fertilizers and preparation method thereof - Google Patents
Chitosan coated controlled release fertilizers and preparation method thereof Download PDFInfo
- Publication number
- CN101229985A CN101229985A CNA2007100132674A CN200710013267A CN101229985A CN 101229985 A CN101229985 A CN 101229985A CN A2007100132674 A CNA2007100132674 A CN A2007100132674A CN 200710013267 A CN200710013267 A CN 200710013267A CN 101229985 A CN101229985 A CN 101229985A
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- China
- Prior art keywords
- fertilizer
- chitosan
- controlled release
- preparation
- release fertilizers
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 239000003337 fertilizer Substances 0.000 title claims abstract description 54
- 229920001661 Chitosan Polymers 0.000 title claims abstract description 21
- 238000013270 controlled release Methods 0.000 title claims abstract description 12
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 238000005469 granulation Methods 0.000 claims abstract description 7
- 230000003179 granulation Effects 0.000 claims abstract description 7
- 239000002245 particle Substances 0.000 claims description 12
- 238000000576 coating method Methods 0.000 claims description 4
- 238000012856 packing Methods 0.000 claims description 3
- 238000004080 punching Methods 0.000 claims description 3
- 238000010079 rubber tapping Methods 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 239000000126 substance Substances 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 2
- 239000002775 capsule Substances 0.000 abstract 2
- 239000011247 coating layer Substances 0.000 abstract 2
- 230000035558 fertility Effects 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 5
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical compound [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 2
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000000618 nitrogen fertilizer Substances 0.000 description 2
- 239000002686 phosphate fertilizer Substances 0.000 description 2
- 229940072033 potash Drugs 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- 235000015320 potassium carbonate Nutrition 0.000 description 2
- 108010054033 Chitin deacetylase Proteins 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 238000012851 eutrophication Methods 0.000 description 1
- 230000004720 fertilization Effects 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 230000003050 macronutrient Effects 0.000 description 1
- 235000021073 macronutrients Nutrition 0.000 description 1
- 239000001272 nitrous oxide Substances 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
- 235000013619 trace mineral Nutrition 0.000 description 1
- 239000011573 trace mineral Substances 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Fertilizers (AREA)
Abstract
The invention relates to controlled release fertilizer with a chitosan capsule and a preparation method for the fertilizer. In the fertilizer common chemical fertilizer is taken as the core and a chitosan coating layer is added outside the fertilizer. The invention also provides a preparation method of the controlled release fertilizer with a chitosan capsule. In the method, the common chemical fertilizer is evenly stirred and is then carried out granulation and parching, and a chitosan coating layer is then evenly sprayed and the fertilizer is perforated and packaged. The fertilizer has the advantages of low cost material and easy obtaining as well as prolonging the fertility of the fertilizer and improving the utilization ratio of the fertilizer, thus reducing the using amount of the fertilizer and reducing the fertilizer loss. Therefore, the invention not only saves the resource, protects the environment, saves time, saves labor and reduces the labor intensity of the peasant, but also can promote the agricultural benefit and peasant income-increasing.
Description
Technical field
The present invention relates to a kind of chitosan coated controlled release fertilizers and preparation method thereof, belong to field of fertilizer production
Technical background
In recent years, along with rate of fertilizer application rapidly increases, but the not corresponding quick growth of grain yield. on the other hand, because using in a large number of chemical fertilizer, particularly science is not used, blindly use, also bring serious negative impact to environment for human survival. the one, the present chemical fertilizer of China is based on readily avaiable fertilizer, utilization ratio is very low, nitrogenous fertilizer only has 30-35%, phosphate fertilizer is about 10-20%, and potash fertilizer is 35-50%, than low ten youngsters of world average level percentage point. because utilization ratio is not high, bring enormous economic loss to society. the 2nd, it is excessive that to use quick-acting chemistry fertile, not only cause the waste of macronutrient, and some areas have caused environmental pollution because of improper fertilization, face of land eutrophication, nitrate nitrogen content exceeds standard in underground water and the vegetables, nitrous oxide emission amount increase etc. has become the fact that can not be ignored and the common problem that needs to be resolved hurrily.
Controlled release fertilizer is the direction of world's fertilizer development, and it has high utilization rate, oligosaprobic characteristics.For improving fertilizer utilization ratio, from 20 middle of century, the manufacturing technology of chemical fertilizer is just set about studying and improving by developed country such as the U.S. and Japan, make every effort to improve fertilizer utilization ratio from the characteristic that changes chemical fertilizer itself, develop in succession and release the release and release control fertilizer series product, the utilization ratio of chemical fertilizer is greatly improved.But because price is too high, except that Japan, seldom have country with its large-scale application in agriculture production, be difficult to big area and promote.
Summary of the invention
The purpose of this invention is to provide a kind of chitosan coated controlled release fertilizers and preparation method thereof, its production cost is low, and production technique is simple, can effectively reduce rate of fertilizer application, improves utilization rate of fertilizer; And the reduction environmental pollution, alleviate peasant's labour intensity.
The object of the present invention is achieved like this: this chitosan coated controlled release fertilizers is a core by general chemistry fertilizer, adding the chitosan coatings forms, according to weight percent, the general chemistry fertilizer core partly accounts for 75%-95%, and the chitosan coatings accounts for 5%-25%.
This chitosan coated controlled release fertilizers, described general chemistry fertilizer are meant nitrogenous fertilizer, phosphate fertilizer, potash fertilizer and compound (compound) fertilizer and middle trace element fertilizer.
Chitosan is the important derivatives that is obtained by the chitin deacetylase base, is a kind of macromolecule cation saccharan.
Preparation method of the present invention adds the general chemistry fertilizer of selecting for use to stir 5-10 minute in the stirrer to uniform particles; be transferred to again and carry out granulation in the tablets press; the granulation built-in temperature is controlled at the 40-60 degree; pressure is 4-7PA; under 30-50 degree temperature, particle was dried 30-40 minute then, will under 80-100 degree temperature, be sprayed onto particle surface equably by the dissolved chitosan again, oven dry; on tapping and plugging machine, give each particle punching at last, packing.
With the fertilizer of the inventive method preparation, materials are cheap and easy to get, can prolong fertilizer efficiency and improve utilization rate of fertilizer, thereby reduce fertilizer amount; reduce fertilizer loss, not only economize on resources, the protection environment is time saving and energy saving; alleviate peasant's labour intensity, and can promote growth of agricultural efficiency, increasing peasant income.
Embodiment
The common big grain urea of selecting for use adds in the stirrer; stir 5 minutes to uniform particles; be transferred to by transport tape and carry out granulation in the tablets press, the granulation built-in temperature is controlled at 40 degree, and pressure is 4PA; under 30 degree temperature, particle was dried 30 minutes then; to be sprayed onto particle surface equably by the dissolved chitosan under 80 degree temperature again, each particle punching is given in oven dry at last on tapping and plugging machine; packing can obtain chitosan coated controlled release fertilizers of the present invention.
Claims (2)
1. chitosan coated controlled release fertilizers and preparation method thereof, it is characterized in that: this fertilizer is core by general chemistry fertilizer, adds the chitosan coatings and forms, according to weight percent, the general chemistry fertilizer core partly accounts for 75%-95%, and the chitosan coatings accounts for 5%-25%.
2. chitosan coated controlled release fertilizers as claimed in claim 1 and preparation method thereof; it is characterized in that: the general chemistry fertilizer of selecting for use is added stir 5-10 minute in the stirrer to uniform particles; be transferred to again and carry out granulation in the tablets press; the granulation built-in temperature is controlled at the 40-60 degree; pressure is 4-7PA; under 30-50 degree temperature, particle was dried 30-40 minute then; to under 80-100 degree temperature, be sprayed onto particle surface equably by the dissolved chitosan again; oven dry; on tapping and plugging machine, give each particle punching at last, packing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100132674A CN101229985A (en) | 2007-01-22 | 2007-01-22 | Chitosan coated controlled release fertilizers and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100132674A CN101229985A (en) | 2007-01-22 | 2007-01-22 | Chitosan coated controlled release fertilizers and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101229985A true CN101229985A (en) | 2008-07-30 |
Family
ID=39896860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100132674A Pending CN101229985A (en) | 2007-01-22 | 2007-01-22 | Chitosan coated controlled release fertilizers and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101229985A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102180739A (en) * | 2011-03-23 | 2011-09-14 | 扬州大学 | Coating pulp for controlled release fertilizer and production method and application thereof |
| CN102557839A (en) * | 2011-11-25 | 2012-07-11 | 史丹利化肥股份有限公司 | Special controlled release fertilizer for chitosan coated mangoes and preparation method thereof |
| CN102675002A (en) * | 2012-06-04 | 2012-09-19 | 史丹利化肥股份有限公司 | Efficient multifunctional selenium-rich fertilizer and production process thereof |
| CN102936175A (en) * | 2012-12-07 | 2013-02-20 | 杜延全 | Sustained-control-release water-retention multifunctional nitrogen fertilizer and preparation method thereof |
| CN103626598A (en) * | 2013-12-23 | 2014-03-12 | 史丹利化肥股份有限公司 | Functional chitosan biological slow-release fertilizer and preparation method thereof |
| CN105110997A (en) * | 2015-10-07 | 2015-12-02 | 吴朱冠宇 | Controlled release fertilizer and preparation method thereof |
| CN105399522A (en) * | 2015-12-12 | 2016-03-16 | 常州大学 | Preparation method for chitosan starch coated controlled-release fertilizer |
| CN105967893A (en) * | 2016-06-17 | 2016-09-28 | 河北羲农农业科技有限公司 | Fertilizer slow release coating agent |
| CN108129215A (en) * | 2018-02-28 | 2018-06-08 | 河南博联农业研究院有限公司 | It is a kind of can be with the Traditional Chinese medicine fertilizer of weeding |
-
2007
- 2007-01-22 CN CNA2007100132674A patent/CN101229985A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102180739A (en) * | 2011-03-23 | 2011-09-14 | 扬州大学 | Coating pulp for controlled release fertilizer and production method and application thereof |
| CN102180739B (en) * | 2011-03-23 | 2013-11-06 | 扬州大学 | Coating pulp for controlled release fertilizer and production method thereof |
| CN102557839A (en) * | 2011-11-25 | 2012-07-11 | 史丹利化肥股份有限公司 | Special controlled release fertilizer for chitosan coated mangoes and preparation method thereof |
| CN102675002A (en) * | 2012-06-04 | 2012-09-19 | 史丹利化肥股份有限公司 | Efficient multifunctional selenium-rich fertilizer and production process thereof |
| CN102936175A (en) * | 2012-12-07 | 2013-02-20 | 杜延全 | Sustained-control-release water-retention multifunctional nitrogen fertilizer and preparation method thereof |
| CN103626598A (en) * | 2013-12-23 | 2014-03-12 | 史丹利化肥股份有限公司 | Functional chitosan biological slow-release fertilizer and preparation method thereof |
| CN103626598B (en) * | 2013-12-23 | 2015-07-29 | 史丹利化肥股份有限公司 | functional chitosan biological slow-release fertilizer and preparation method thereof |
| CN105110997A (en) * | 2015-10-07 | 2015-12-02 | 吴朱冠宇 | Controlled release fertilizer and preparation method thereof |
| CN105110997B (en) * | 2015-10-07 | 2017-10-27 | 吴朱冠宇 | A kind of slow release fertilizer and preparation method thereof |
| CN105399522A (en) * | 2015-12-12 | 2016-03-16 | 常州大学 | Preparation method for chitosan starch coated controlled-release fertilizer |
| CN105967893A (en) * | 2016-06-17 | 2016-09-28 | 河北羲农农业科技有限公司 | Fertilizer slow release coating agent |
| CN108129215A (en) * | 2018-02-28 | 2018-06-08 | 河南博联农业研究院有限公司 | It is a kind of can be with the Traditional Chinese medicine fertilizer of weeding |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20080730 |