CN102093143A - Sustained-release sulfur-containing nitrogen fertilizer - Google Patents
Sustained-release sulfur-containing nitrogen fertilizer Download PDFInfo
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- CN102093143A CN102093143A CN2009102207570A CN200910220757A CN102093143A CN 102093143 A CN102093143 A CN 102093143A CN 2009102207570 A CN2009102207570 A CN 2009102207570A CN 200910220757 A CN200910220757 A CN 200910220757A CN 102093143 A CN102093143 A CN 102093143A
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- fertilizer
- controlled release
- sulfur
- polyvinyl alcohol
- sulphur
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Abstract
The invention relates to the field of mixed fertilizers in agricultural production, in particular to a sustained-release long-acting fertilizer. The fertilizer is formed by uniformly mixing and granulating nitrogen fertilizer, sustained-release agent, sulfur and polyvinyl alcohol. The obtained mixture contains the following effective ingredients in percentage by weight: 10 to 40 percent of nitrogen (N), 7 to 20 percent of sulfur (S), 0.5 to 10 percent of sustained-release agent, and 1 to 5 percent of polyvinyl alcohol. The sustained-release long-acting fertilizer has long fertilizer supply time, and provides nutrition of each stage for crops; and the utilization rate of the fertilizer is improved.
Description
Technical field:
The present invention relates to mixed fertilizer field in the agriculture production, especially relate to slow release long-acting fertilizer.
Background technology:
We mainly contain urea, bicarbonate of ammonia, ammonium sulfate, ammonium chloride, ammonium nitrate etc. in the kind of our national nitrogenous fertilizer at present, these nitrogenous fertilizer provide competent nitrogen nutrition for plant, but because the utilization rate of nitrogen fertilizer of China has only 35%-45% at present, most nitrogenous fertilizer has been wasted, also caused environmental pollution simultaneously, the utilization ratio that how to improve China's nitrogenous fertilizer has become present urgent problem, and also the someone had invented long-acting carbamide, long-acting ammonium bicarbonate, fertilizer such as long-acting ammonium sulfate in the past.But these inventions just utilize urease inhibitors and nitrification inhibitor to control urease in the soil, and inhibition nitrification, improved the utilization ratio of nitrogenous fertilizer, this method is more single, result of use can be subjected to Temperature Influence, the slow controlled release of our invention contains sulfur-nitrogen fertilizer and has not only added urease inhibitors and nitrification inhibitor, also utilize sulphur dressing and the comprehensive action of polyvinyl alcohol dressing, so just can improve the utilization ratio of nitrogenous fertilizer greatly, can improve utilization rate of nitrogen fertilizer than simple use nitrification inhibitor and urease inhibitors and reach 30%.Simultaneously this fertilizer has also added the required element sulphur of crop, because chalcogen is in moderate-element, because these more than ten years peasant seldom uses element sulphur fertilizer recently, this fertilizer uses sulphur as a kind of Drug coating and moderate-element.
Summary of the invention:
The purpose of this invention is to provide a kind of slow controlled release and contain sulfur-nitrogen fertilizer, the characteristics that this fertilizer not only has long-acting fertilizer also have the effect that element sulphur in the earth is provided, and have also adopted the polyvinyl alcohol packaging technique simultaneously, can improve fertilizer utilization ratio greatly.
The feature that slow controlled release contains sulfur-nitrogen fertilizer is to be formed by nitrogenous fertilizer, sustained release dosage, sulphur, the granulation of polyvinyl alcohol mixing, the effective constituent that contains following ratio in the mixture that is obtained: nitrogen (N) 10-40%, sulfur-bearing (S) 7-20%, controlled release agent 0.5-10%, containing polyvinyl alcohol 1-5%, promptly is finished product behind the mixing granulation.
The concrete prescription of this fertilizer is
Urea 30-80%
Sulphur 7-20%
Polyvinyl alcohol 1-5%
Controlled release agent 0.5-10%
Specific embodiment 1
Urea 70%
Sulphur 18%
Polyvinyl alcohol 4%
Controlled release agent 8%
Proportionally at first that controlled release agent and urea is even in stirrer for mixing, this urea that mixes is sent in the fluidized-bed under 80 degrees centigrade of situations of temperature, sulphur and polyvinyl alcohol are sprayed on the urea then, be slow controlled release after the drying and contain sulfur-nitrogen fertilizer.
Specific embodiment 2
Particulate state ammonium sulfate 20%
Urea 60%
Sulphur 12%
Polyvinyl alcohol 3%
Controlled release agent 5%
Proportionally at first controlled release agent and urea and ammonium sulfate are mixed, this nitrogenous fertilizer that mixes is sent in the fluidized-bed under 80 degrees centigrade of situations of temperature, sulphur and polyvinyl alcohol are sprayed on the urea then, be slow controlled release after the drying and contain sulfur-nitrogen fertilizer.
Specific embodiment 3
Particulate state ammonium sulfate 20%
Particle bicarbonate of ammonia 60%
Sulphur 12%
Polyvinyl alcohol 3%
Controlled release agent 5%
Proportionally at first controlled release agent and carbon ammonium and ammonium sulfate are mixed, this nitrogenous fertilizer that mixes is sent in the fluidized-bed under 80 degrees centigrade of situations of temperature, sulphur and polyvinyl alcohol are sprayed on the urea then, be slow controlled release after the drying and contain sulfur-nitrogen fertilizer.
Claims (6)
1. slow controlled release contains sulfur-nitrogen fertilizer and it is characterized by: this slowly-releasing sulfur-bearing nitrogen fertilizer is made up of nitrogenous fertilizer, sulphur, polyvinyl alcohol, controlled release agent, ratio according to this fertilizer of weight percent is, nitrogenous (N) 10-40%, sulfur-bearing (S) 7-20%, contain polyvinyl alcohol 1-5%, controlled release agent 0.5-10%.
2. nitrogenous fertilizer according to claim 1 comprises one or more in urea, ammonium sulfate, ammonium nitrate, the ammonium chloride.
3. sulphur according to claim 1 comprises industrial production sulphur.
4. controlled release agent according to claim 1 comprises humic acid, DCD, thiocarbamide.
5. slow controlled release according to claim 1 contains the sulfur-nitrogen fertilizer prescription
Urea 30-80%
Sulphur 7-20%
Polyvinyl alcohol 1-5%
Controlled release agent 0.5-10%
6. slow controlled release according to claim 5 contains its prescription of sulfur-nitrogen fertilizer and consists of
Urea 70%
Sulphur 18%
Polyvinyl alcohol 4%
Controlled release agent 8%
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102207570A CN102093143A (en) | 2009-12-15 | 2009-12-15 | Sustained-release sulfur-containing nitrogen fertilizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102207570A CN102093143A (en) | 2009-12-15 | 2009-12-15 | Sustained-release sulfur-containing nitrogen fertilizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102093143A true CN102093143A (en) | 2011-06-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102207570A Pending CN102093143A (en) | 2009-12-15 | 2009-12-15 | Sustained-release sulfur-containing nitrogen fertilizer |
Country Status (1)
| Country | Link |
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| CN (1) | CN102093143A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102417426A (en) * | 2011-08-15 | 2012-04-18 | 山东金山化肥有限公司 | Method for preparing sulfur resin spraying type slow controlled release fertilizer |
| CN103351251A (en) * | 2013-07-05 | 2013-10-16 | 内蒙古辽中京化工有限责任公司 | Long-acting sustained-release organic nitrogenous fertilizer and manufacturing technology thereof |
| CN104926517A (en) * | 2015-06-19 | 2015-09-23 | 上海化工研究院 | Production device of double-function slow-release nitrogen fertilizer and application of production device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1566034A (en) * | 2003-06-25 | 2005-01-19 | 中国石油化工股份有限公司 | Slow release/controlled release fertilizer for regulating and controlling crop nutrition all the time and preparation method thereof |
| CN101041607A (en) * | 2007-03-16 | 2007-09-26 | 汉枫缓释肥料（上海）有限公司 | Production method and equipment for highly effective slow releasing compound fertilizer and product |
| CN101486615A (en) * | 2009-02-23 | 2009-07-22 | 烟台五洲施得富肥料有限公司 | Preparation of fertilizer coating sustained-release agent |
| CN101503330A (en) * | 2009-03-06 | 2009-08-12 | 上海师范大学 | Efficient coated control release urea and preparation thereof |
-
2009
- 2009-12-15 CN CN2009102207570A patent/CN102093143A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1566034A (en) * | 2003-06-25 | 2005-01-19 | 中国石油化工股份有限公司 | Slow release/controlled release fertilizer for regulating and controlling crop nutrition all the time and preparation method thereof |
| CN101041607A (en) * | 2007-03-16 | 2007-09-26 | 汉枫缓释肥料（上海）有限公司 | Production method and equipment for highly effective slow releasing compound fertilizer and product |
| CN101486615A (en) * | 2009-02-23 | 2009-07-22 | 烟台五洲施得富肥料有限公司 | Preparation of fertilizer coating sustained-release agent |
| CN101503330A (en) * | 2009-03-06 | 2009-08-12 | 上海师范大学 | Efficient coated control release urea and preparation thereof |
Non-Patent Citations (1)
| Title |
|---|
| 郝万晨: "缓释肥料的开发", 《应用化工》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102417426A (en) * | 2011-08-15 | 2012-04-18 | 山东金山化肥有限公司 | Method for preparing sulfur resin spraying type slow controlled release fertilizer |
| CN103351251A (en) * | 2013-07-05 | 2013-10-16 | 内蒙古辽中京化工有限责任公司 | Long-acting sustained-release organic nitrogenous fertilizer and manufacturing technology thereof |
| CN103351251B (en) * | 2013-07-05 | 2015-10-07 | 内蒙古辽中京农业科技有限责任公司 | Long-acting slow-releasing and controlled-releasing organic nitrogenous fertilizer and production technique thereof |
| CN104926517A (en) * | 2015-06-19 | 2015-09-23 | 上海化工研究院 | Production device of double-function slow-release nitrogen fertilizer and application of production device |
| CN104926517B (en) * | 2015-06-19 | 2018-02-02 | 上海化工研究院有限公司 | A kind of preparation facilities of difunctional slow-release nitrogen fertilizer and its application |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110615 |