CN102775236A - Agricultural and forestry waste carbon-based slow release filter and preparation method thereof - Google Patents
Agricultural and forestry waste carbon-based slow release filter and preparation method thereof Download PDFInfo
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- CN102775236A CN102775236A CN2012102954956A CN201210295495A CN102775236A CN 102775236 A CN102775236 A CN 102775236A CN 2012102954956 A CN2012102954956 A CN 2012102954956A CN 201210295495 A CN201210295495 A CN 201210295495A CN 102775236 A CN102775236 A CN 102775236A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/22—Improving land use; Improving water use or availability; Controlling erosion
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/20—Reduction of greenhouse gas [GHG] emissions in agriculture, e.g. CO2
- Y02P60/21—Dinitrogen oxide [N2O], e.g. using aquaponics, hydroponics or efficiency measures
Abstract
The invention discloses an agricultural and forestry waste carbon-based slow release filter and a preparation method thereof. The preparation method comprises the following steps: crushing agricultural and forestry waste into biomass particles, carrying out pyrolysis to prepare charcoal, dissolving monoammonium phosphate and monopotassium phosphate in water to prepare a saturated water solution of monoammonium phosphate and a saturated water solution of monopotassium phosphate, soaking charcoal prepared in step a in the saturated water solution of monoammonium phosphate and the saturated water solution of monopotassium phosphate so that adsorption capacity of charcoal to phosphate radical ions, ammonium ions and potassium ions is up to 80-90% of balanced adsorption capacity, then taking out charcoal, and drying at the drying temperature of 100-105 DEG C until the moisture content of the slow release filter is less than 5%, thus the agricultural and forestry waste carbon-based slow release filter is obtained. The agricultural and forestry waste carbon-based slow release filter disclosed by the invention is low in cost, long in slow release time and good in slow release effect, can be used for long term and can maintain soil fertility for a long time.
Description
Technical field:
The present invention relates to a kind of fertilizer and preparation method thereof, be specifically related to a kind of agriculture and forestry organic waste material carbon-base slow release fertilizer and preparation method thereof.
Background technology:
Slow-release fertilizer the earliest belongs to slightly soluble type fertilizer, like urea formaldehyde and other urea-formaldehyde condensates and main compound (like the iso-butylene diurea) with chemical degradation.Slightly soluble type fertilizer mainly is the slightly soluble organic nitrogen compound; The nitrogen nutrient mainly is provided; The nitrogen ratio that lower molecular weight urea aldehyde partly provides has surpassed the needed amount of crop in earlier stage in plant growth; Yet HMW partly provides nitrogen too slow again, and Nutrient Release can not satisfy the demand that crop grows up well.Developed a kind of physical barrier control type fertilizer subsequently, like coated granular fertilizer and matrix composite fertilizer, yet the coated fertilizer of present this fertilizer all adopts the non-degradable high molecular polymer, very easily remains in to pollute in the soil and Soil degradation.Charcoal is one type of solid product that is obtained by the agriculture and forestry organic waste material pyrolysis; Charcoal is the carbonaceous organic material of height aromatize; Can be present in steadily in the long term in the soil; Self contain some nutrients, the flourishing pore texture of charcoal can effectively improve the retentiveness and the nutrient hold facility of soil simultaneously.
Therefore, the conversion of agriculture and forestry organic waste material charcoal is combined with the slow-release fertilizer production technology, explore a kind of new bio carbon-base slow release fertilizer and have a good application prospect in directions such as environment protection, agriculture prodns.The Chinese patent Granted publication number is: CN102219604A, Granted publication day be 2011.10.19 disclosure of the Invention a kind of paddy rice base slow-release fertilizer and preparation method.This slow-release fertilizer is fertile core with nitrogen-phosphorus-potassium compound fertilizer; The outer sour particle of rice straw biomass charcoal, wilkinite and humic acid that coats, its adhesive method is: nitrogen-phosphorus-potassium compound fertilizer, rice straw biomass charcoal powder, wilkinite and humic acid acid material are sprayed starch solution and stir formation.The slow-release fertilizer that this method forms, nutrient mainly concentrates on fertile core, relies on the outer physics that coats to hinder and realizes slow release effect.
Summary of the invention:
A kind of with low cost, slow-release time is long, the had good sustained release effect life-time service but the purpose of this invention is to provide, and agriculture and forestry organic waste material carbon-base slow release that can long-term preservation of fertility is fertile and preparation method thereof.
Agriculture and forestry organic waste material carbon-base slow release fertilizer of the present invention prepares through following method, and this method may further comprise the steps:
A, agriculture and forestry organic waste material is ground into biological particles, pyrolysis is prepared into charcoal;
B, monoammonium phosphate and potassium primary phosphate are dissolved in the water; Be mixed with the saturated aqueous solution of monoammonium phosphate and potassium primary phosphate; Then the charcoal of step a is soaked in the saturated aqueous solution of monoammonium phosphate and potassium primary phosphate, makes the adsorptive capacity to phosphate anion, ammonium ion, potassium ion of charcoal reach the 80-90% of equilibrium adsorption capacity, taking out charcoal then is under 100 ~ 105 ℃ at drying temperature; Make its water ratio be lower than 5%, it is fertile to obtain the agriculture and forestry organic waste material carbon-base slow release thus.
Preferred its particle diameter of the biological particles of described step a is no more than 0.3cm; The pyrolysis of described step a is prepared into the charcoal preferred steps: is 10 ~ 15 ℃/min with biological particles in heating rate; Pyrolysis temperature is 600 ~ 800 ℃; The residence time is 2 ~ 3h, and pyrolysis protection gas is to be prepared into charcoal under the condition of nitrogen.
Be prepared into the pyrolysis gas, the pyrolysis oil burning that produce in the process of charcoal in pyrolysis and can be used as the energy that the charcoal pyrolysis prepares process, help save energy like this.
Described charcoal with step a is soaked in the saturated aqueous solution of monoammonium phosphate and potassium primary phosphate; Preferably under the condition that the saturated aqueous solution of monoammonium phosphate and potassium primary phosphate is stirred, soak; Soak time is preferably 6 ~ 8 hours; Through 6 ~ 8 hours immersion, charcoal is reached between the 80-90% of equilibrium adsorption capacity to the adsorptive capacity of phosphate anion, ammonium ion, potassium ion.
Solution among the described step b behind the taking-up charcoal can further add monoammonium phosphate and potassium primary phosphate more inside, makes it saturated, continues to use again.
Compared with prior art, the present invention has following beneficial effect:
1, the dressing charcoal that this agriculture and forestry organic waste material carbon-base slow release is fertile is from agriculture and forestry organic waste material, and cost is very cheap, and distributes extensively;
2, the charcoal in the agriculture and forestry organic waste material carbon-base slow release fertilizer can be present in the soil for a long time, improves soil charcoal stock, self comprises certain content nutrient element;
3, the nutrient that this agriculture and forestry organic waste material carbon-base slow release is fertile is from monoammonium phosphate, potassium primary phosphate, and is for common chemical fertilizer raw material, from the horse's mouth;
4, the fertilizer efficiency density that this agriculture and forestry organic waste material carbon-base slow release is fertile is high, and slow-release time is long, but life-time service, and can long-term preservation of fertility.
Embodiment:
Following examples are to further specify of the present invention, rather than limitation of the present invention.
Embodiment 1:
Utilize the straw kibbler that rice straw is pulverized, crossing diameter is the screen cloth of 0.3cm, gets permeate, pyrolysis in the external-heat pyrolysis oven then, and protection gas is nitrogen, is heated to 600 ℃ and keep 2h to obtain charcoal from normal temperature with the heating rate of 10 ℃/min.The pyrolysis gas that pyrolysis obtains, pyrolysis oil burning provide heat for pyrolysis oven.With the saturated aqueous solution of tap water preparation monoammonium phosphate and potassium primary phosphate, monoammonium phosphate, potassium primary phosphate can be from market purchasings.Charcoal is immersed in the saturated aqueous solution of monoammonium phosphate and potassium primary phosphate; Saturated aqueous solution is stirred by impeller; It is flowed, and soak time is 6h, and charcoal reaches between the 80-90% of equilibrium adsorption capacity the adsorptive capacity of phosphate anion, ammonium ion, potassium ion.From monoammonium phosphate, potassium dihydrogen phosphate, filter out charcoal then; Surplus solution continues to add monoammonium phosphate and potassium primary phosphate makes it saturated; Stay and do usefulness next time; With 105 ℃ of dry 1h, its water ratio is 2.5% to the charcoal that leaches in hotblast stove, and it is fertile promptly to obtain the agriculture and forestry organic waste material carbon-base slow release.
According to slow release fertilizer standard (GB/T23348-2009), measured the fertile initial stage nutrient release rate of agriculture and forestry organic waste material carbon-base slow release of present embodiment, 28 days accumulation nutrient release rates; Fertilizer releasing period; The accumulation nutrient release rate of fertilizer releasing period, average release rate data, as shown in table 1.The mensuration result of table 1 shows that the agriculture and forestry organic waste material carbon-base slow release fertilizer that embodiment 1 obtains meets the national standard of China about slow release fertilizer, has the good slow release effect.
Table 1: embodiment 1 slow release fertilizer related assays data and national standard index
| Project | Determination data | The national standard index |
| Initial stage nutrient release rate (%) | 13.4 | ≤15 |
| 28 days accumulation nutrient release rates (%) | 73.6 | ≤80 |
| Fertilizer releasing period (moon) | 6 | —— |
| The accumulation nutrient release rate (%) of fertilizer releasing period | 85 | ≥80 |
| Average release rate (%/d) | 0.47 | —— |
Embodiment 2:
Utilize the straw kibbler that rice straw is pulverized, crossing diameter is the screen cloth of 0.3cm, gets permeate, pyrolysis in the external-heat pyrolysis oven then, and protection gas is nitrogen, is heated to 800 ℃ and keep 3h to obtain charcoal from normal temperature with the heating rate of 15 ℃/min.The pyrolysis gas that pyrolysis obtains, pyrolysis oil burning provide heat for pyrolysis oven.With the saturated aqueous solution of tap water preparation monoammonium phosphate and potassium primary phosphate, monoammonium phosphate, potassium primary phosphate can be from market purchasings.Charcoal is immersed in the saturated aqueous solution of monoammonium phosphate and potassium primary phosphate; Saturated aqueous solution is stirred by impeller; It is flowed, and soak time is 8h, and charcoal reaches between the 80-90% of equilibrium adsorption capacity the adsorptive capacity of phosphate anion, ammonium ion, potassium ion.From monoammonium phosphate, potassium dihydrogen phosphate, filter out charcoal then; Surplus solution continue to add monoammonium phosphate and potassium primary phosphate makes it saturated, stay and do next usefulness, the charcoal that leaches in hotblast stove with 100 ℃ of dry 1h; Water ratio is 2.5%, and it is fertile promptly to obtain the agriculture and forestry organic waste material carbon-base slow release.
According to slow release fertilizer standard (GB/T23348-2009), measured the fertile initial stage nutrient release rate of agriculture and forestry organic waste material carbon-base slow release of present embodiment, 28 days accumulation nutrient release rates; Fertilizer releasing period; The accumulation nutrient release rate of fertilizer releasing period, average release rate data, as shown in table 2.The mensuration result of table 2 shows that the agriculture and forestry organic waste material carbon-base slow release fertilizer that embodiment 2 obtains meets the national standard of China about slow release fertilizer, has the good slow release effect.
Fertile related assays data of the agriculture and forestry organic waste material carbon-base slow release of table 2: embodiment 2 and national standard index
| Project | Determination data | The national standard index |
| Initial stage nutrient release rate (%) | 11.5 | ≤15 |
| 28 days accumulation nutrient release rates (%) | 70.5 | ≤80 |
| Fertilizer releasing period (moon) | 6 | —— |
| The accumulation nutrient release rate (%) of fertilizer releasing period | 85 | ≥80 |
| Average release rate (%/d) | 0.47 | —— |
At last, it is also to be noted that what more than enumerate only is specific embodiment of the present invention, its objective is the unusual effect in order to explain that the embodiment of the present invention method is obtained.Obviously, the invention is not restricted to above examples of implementation, many distortion can also be arranged.All distortion that those of ordinary skill in the art can directly derive or associate from content disclosed by the invention all should be thought protection scope of the present invention.
Claims (6)
1. the preparation method that the agriculture and forestry organic waste material carbon-base slow release is fertile is characterized in that, may further comprise the steps:
A, agriculture and forestry organic waste material is ground into biological particles, pyrolysis is prepared into charcoal;
B, monoammonium phosphate and potassium primary phosphate are dissolved in the water; Be mixed with the saturated aqueous solution of monoammonium phosphate and potassium primary phosphate; Then the charcoal of step a is soaked in the saturated aqueous solution of monoammonium phosphate and potassium primary phosphate, makes the adsorptive capacity to phosphate anion, ammonium ion, potassium ion of charcoal reach the 80-90% of equilibrium adsorption capacity, taking out charcoal then is under 100 ~ 105 ℃ at drying temperature; Make its water ratio be lower than 5%, it is fertile to obtain the agriculture and forestry organic waste material carbon-base slow release thus.
2. preparation method according to claim 1; It is characterized in that its particle diameter of the biological particles of described step a is no more than 0.3cm, the pyrolysis of described step a is prepared into charcoal; The steps include: that be 10 ~ 15 ℃/min with biological particles in heating rate; Pyrolysis temperature is 600 ~ 800 ℃, and the residence time is 2 ~ 3h, and pyrolysis protection gas is to be prepared into charcoal under the condition of nitrogen.
3. preparation method according to claim 1 is characterized in that, pyrolysis prepares the energy of process as charcoal to be prepared into the pyrolysis gas that produces in the process of charcoal, pyrolysis oil ignition energy in pyrolysis.
4. preparation method according to claim 1; It is characterized in that; Described charcoal with step a is soaked in the saturated aqueous solution of monoammonium phosphate and potassium primary phosphate, is to soak under the condition that is stirred of the saturated aqueous solution at monoammonium phosphate and potassium primary phosphate, and soak time is 6 ~ 8 hours.
5. preparation method according to claim 1 is characterized in that, the solution among the described step b behind the taking-up charcoal can add monoammonium phosphate and potassium primary phosphate more inside, makes it saturated, continues to use again.
6. the agriculture and forestry organic waste material carbon-base slow release for preparing of the fertile preparation method of agriculture and forestry organic waste material carbon-base slow release according to claim 1 and 2 is fertile.
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103396268A (en) * | 2013-08-19 | 2013-11-20 | 琼州学院 | Carbon base long-acting nitrogen fertilizer biochemistry inhibitor and preparation method thereof |
| CN103435411A (en) * | 2013-08-19 | 2013-12-11 | 琼州学院 | Charcoal based plant cultivation substrate and preparation method thereof |
| CN103613465A (en) * | 2013-11-27 | 2014-03-05 | 安徽省司尔特肥业股份有限公司 | Special biomass charcoal-based compound fertilizer for rapes and preparation method thereof |
| CN103641603A (en) * | 2013-11-27 | 2014-03-19 | 安徽省司尔特肥业股份有限公司 | Special biomass charcoal-based composite fertilizer for corn and preparation method thereof |
| CN103922860A (en) * | 2014-05-04 | 2014-07-16 | 扬州大学 | Production method of long-acting ammonium phosphate salt slow release fertilizer granules |
| CN105503483A (en) * | 2016-02-06 | 2016-04-20 | 云南省烟草公司昆明市公司 | Method for preparing carbon-based mineralized active fertilizer |
| CN106118664A (en) * | 2016-06-17 | 2016-11-16 | 广东省农业科学院农业资源与环境研究所 | A kind of preparation method and applications of charcoal based composition and use thereof in packaging |
| CN106146153A (en) * | 2016-07-01 | 2016-11-23 | 北京国环清华环境工程设计研究院有限公司 | Potassium the method manufacturing carbon-base slow release type compound fertilizer is extracted from urine waste water |
| CN106995350A (en) * | 2017-03-27 | 2017-08-01 | 深圳先进技术研究院 | The preparation method and sludge base charcoal slow-release phosphate fertilizer of sludge base charcoal slow-release phosphate fertilizer |
| CN108314591A (en) * | 2018-05-08 | 2018-07-24 | 湖南农业大学 | A kind of biology charcoal slow-release fertilizer and preparation method thereof |
| CN108586046A (en) * | 2018-05-28 | 2018-09-28 | 贵州环科环境工程有限公司 | A kind of compound slow release fertilizer and preparation method thereof |
| CN109438126A (en) * | 2018-12-13 | 2019-03-08 | 上海市园林科学规划研究院 | A kind of preparation method of no coating organic wet garbage charcoal base manure |
| WO2019100537A1 (en) * | 2017-11-24 | 2019-05-31 | 陈燕蓉 | Specialized biological carbon-based slow-release fertilizer for potatoes and preparation method therefor |
| CN110157447A (en) * | 2019-05-22 | 2019-08-23 | 辽宁工程技术大学 | A kind of dust storm soil conditioner and preparation method thereof and application method |
| CN110423160A (en) * | 2019-09-02 | 2019-11-08 | 南开大学 | It is a kind of using cornstalk biological charcoal as the slow-release phosphate fertilizer preparation method of carrier |
| CN111333461A (en) * | 2020-03-03 | 2020-06-26 | 东南大学 | Method for utilizing biomass-based fertilizer slow-release and controlled-release material based on agricultural park and special equipment thereof |
| US11124461B2 (en) | 2019-07-04 | 2021-09-21 | Incitec Pivot Limited | Fertilizer |
| CN114605201A (en) * | 2022-03-24 | 2022-06-10 | 金华生物质产业科技研究院 | Kitchen waste biomass charcoal-based slow release fertilizer and preparation method and application thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102432397A (en) * | 2011-10-25 | 2012-05-02 | 魏荣华 | Agricultural soil water and fertility retaining agent with sustained release effect and preparation method thereof |
| CN102503721A (en) * | 2011-10-17 | 2012-06-20 | 上海交通大学 | Preparation method of diammonium hydrogen phosphate slow-release fertilizer |
-
2012
- 2012-08-17 CN CN2012102954956A patent/CN102775236A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102503721A (en) * | 2011-10-17 | 2012-06-20 | 上海交通大学 | Preparation method of diammonium hydrogen phosphate slow-release fertilizer |
| CN102432397A (en) * | 2011-10-25 | 2012-05-02 | 魏荣华 | Agricultural soil water and fertility retaining agent with sustained release effect and preparation method thereof |
Non-Patent Citations (9)
| Title |
|---|
| MODABBER AHMED KHAN等: "Nutrient-impregnated charcoal: an environmentally friendly slow-release fertilizer", 《ENVIRONMENTALIST》, vol. 28, no. 3, 30 September 2008 (2008-09-30), pages 231 - 235, XP019603682 * |
| 何绪生等: "生物炭对土壤肥料的作用及未来研究", 《中国农学通报》, vol. 27, no. 15, 25 June 2011 (2011-06-25), pages 16 - 25 * |
| 刘一星等: "《木质废弃物再生循环利用技术》", 30 June 2005, article "木质废弃物再生循环利用技术", pages: 31 * |
| 周立祥主编: "《固体废物处理处置与资源化》", 31 July 2007, article "固体废物处理处置与资源化", pages: 204-206 * |
| 崔月峰等: "颗粒炭及新型缓释肥对玉米的应用效应研究", 《辽宁农业科学》, no. 3, 18 June 2008 (2008-06-18), pages 5 - 8 * |
| 常建民主编: "《林木生物质资源与能源化利用技术》", 31 July 2007, article "林木生物质资源与能源化利用技术", pages: 204-206 * |
| 毕于运等: "《中国秸秆资源综合利用技术》", 30 September 2008, article "中国秸秆资源综合利用技术", pages: 171 * |
| 王震宇等: "湿地植物芦竹生物炭的制备及特性表征研究", 《2010中国环境科学学会学术年会论文集(第四卷)》, 31 December 2010 (2010-12-31), pages 4341 - 4346 * |
| 第27卷: "生物炭生产与农用的意义及国内外动态", 《农业工程学报》, vol. 27, no. 2, 28 February 2011 (2011-02-28) * |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103396268A (en) * | 2013-08-19 | 2013-11-20 | 琼州学院 | Carbon base long-acting nitrogen fertilizer biochemistry inhibitor and preparation method thereof |
| CN103435411A (en) * | 2013-08-19 | 2013-12-11 | 琼州学院 | Charcoal based plant cultivation substrate and preparation method thereof |
| CN103613465A (en) * | 2013-11-27 | 2014-03-05 | 安徽省司尔特肥业股份有限公司 | Special biomass charcoal-based compound fertilizer for rapes and preparation method thereof |
| CN103641603A (en) * | 2013-11-27 | 2014-03-19 | 安徽省司尔特肥业股份有限公司 | Special biomass charcoal-based composite fertilizer for corn and preparation method thereof |
| CN103641603B (en) * | 2013-11-27 | 2015-04-15 | 安徽省司尔特肥业股份有限公司 | Special biomass charcoal-based composite fertilizer for corn and preparation method thereof |
| CN103613465B (en) * | 2013-11-27 | 2015-05-20 | 安徽省司尔特肥业股份有限公司 | Special biomass charcoal-based compound fertilizer for rapes and preparation method thereof |
| CN103922860A (en) * | 2014-05-04 | 2014-07-16 | 扬州大学 | Production method of long-acting ammonium phosphate salt slow release fertilizer granules |
| CN105503483A (en) * | 2016-02-06 | 2016-04-20 | 云南省烟草公司昆明市公司 | Method for preparing carbon-based mineralized active fertilizer |
| CN106118664B (en) * | 2016-06-17 | 2020-05-12 | 广东省农业科学院农业资源与环境研究所 | Preparation method and application of biochar-based composition |
| CN106118664A (en) * | 2016-06-17 | 2016-11-16 | 广东省农业科学院农业资源与环境研究所 | A kind of preparation method and applications of charcoal based composition and use thereof in packaging |
| CN106146153B (en) * | 2016-07-01 | 2017-06-20 | 北京国环清华环境工程设计研究院有限公司 | Potassium and the method for manufacturing carbon-base slow release type composite fertilizer are extracted from urine waste water |
| CN106146153A (en) * | 2016-07-01 | 2016-11-23 | 北京国环清华环境工程设计研究院有限公司 | Potassium the method manufacturing carbon-base slow release type compound fertilizer is extracted from urine waste water |
| CN106995350A (en) * | 2017-03-27 | 2017-08-01 | 深圳先进技术研究院 | The preparation method and sludge base charcoal slow-release phosphate fertilizer of sludge base charcoal slow-release phosphate fertilizer |
| WO2019100537A1 (en) * | 2017-11-24 | 2019-05-31 | 陈燕蓉 | Specialized biological carbon-based slow-release fertilizer for potatoes and preparation method therefor |
| CN108314591A (en) * | 2018-05-08 | 2018-07-24 | 湖南农业大学 | A kind of biology charcoal slow-release fertilizer and preparation method thereof |
| CN108314591B (en) * | 2018-05-08 | 2021-04-27 | 湖南农业大学 | Biochar-based slow release fertilizer and preparation method thereof |
| CN108586046A (en) * | 2018-05-28 | 2018-09-28 | 贵州环科环境工程有限公司 | A kind of compound slow release fertilizer and preparation method thereof |
| CN108586046B (en) * | 2018-05-28 | 2021-04-20 | 贵州环科环境工程有限公司 | Compound slow-release fertilizer and preparation method thereof |
| CN109438126A (en) * | 2018-12-13 | 2019-03-08 | 上海市园林科学规划研究院 | A kind of preparation method of no coating organic wet garbage charcoal base manure |
| CN110157447A (en) * | 2019-05-22 | 2019-08-23 | 辽宁工程技术大学 | A kind of dust storm soil conditioner and preparation method thereof and application method |
| US11124461B2 (en) | 2019-07-04 | 2021-09-21 | Incitec Pivot Limited | Fertilizer |
| US11691929B2 (en) | 2019-07-04 | 2023-07-04 | Incitec Fertilizers Pty Limited | Fertiliser |
| CN110423160A (en) * | 2019-09-02 | 2019-11-08 | 南开大学 | It is a kind of using cornstalk biological charcoal as the slow-release phosphate fertilizer preparation method of carrier |
| CN111333461A (en) * | 2020-03-03 | 2020-06-26 | 东南大学 | Method for utilizing biomass-based fertilizer slow-release and controlled-release material based on agricultural park and special equipment thereof |
| CN114605201A (en) * | 2022-03-24 | 2022-06-10 | 金华生物质产业科技研究院 | Kitchen waste biomass charcoal-based slow release fertilizer and preparation method and application thereof |
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Application publication date: 20121114 |