CN105152816A - Humic acid chelating slow-release fertilizer special for soybeans and preparation method thereof - Google Patents
Humic acid chelating slow-release fertilizer special for soybeans and preparation method thereof Download PDFInfo
- Publication number
- CN105152816A CN105152816A CN201510687918.2A CN201510687918A CN105152816A CN 105152816 A CN105152816 A CN 105152816A CN 201510687918 A CN201510687918 A CN 201510687918A CN 105152816 A CN105152816 A CN 105152816A
- Authority
- CN
- China
- Prior art keywords
- parts
- humic acid
- release fertilizer
- sustained
- acid chelate
- 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.)
- Pending
Links
Landscapes
- Fertilizers (AREA)
Abstract
The invention provides a humic acid chelating slow-release fertilizer special for soybeans and a preparation method thereof. The slow-release fertilizer comprises the following raw materials in parts by weight: 7-11 parts of humic acid, 8-16 parts of urea, 38-47 parts of monoammonium phosphate, 16-23 parts of potassium chloride, 4-7 parts of liquid ammonia, 0.5-1.5 parts of zinc sulfate, 0.5-1.5 parts of manganese sulfate, 2-3 parts of ammonium molybdate, 4-6 parts of liquid sodium silicate and 4-5 parts of concentrated sulfuric acid. According to the invention, liquid sodium silicate is utilized for coating fertilizer particles to obtain a slow-release function; the fertilizer can be applied in one time so as to ensure the needs of the soybeans in the whole growth period; nutrient proportions as well as secondary and trace elements in the fertilizer are more suitable for the growth needs of the soybeans; and the fertilizer also has the effects of promoting fertilizer synergism, improving and repairing soil, increasing the crop yield and improving the crop quality.
Description
Technical field
The invention belongs to slow release fertilizer technical field, especially relate to special humic acid chelate sustained-release fertilizer material of a kind of soybean and preparation method thereof.
Background technology
" crops YIZHIHUA, complete in fertile main ", for many years generally use of chemical fertilizer in China's agriculture production is agricultural development, increasing peasant income and rural area prosperity have made tremendous contribution.But use chemical fertilizer in a large number for a long time, also cause soil salt content too high, harmful ion concentration is excessive, and structural difference, easily hardens, and in soil, fertility is unbalanced, fertility declines, and crop growth is restricted.Show according to data, China's soil pollution is day by day serious, saline-alkali soil rapid development.Improve soil, preserving the ecological environment causes the great attention of the Chinese government, therefore China proposes and realizes the year two thousand twenty chemical fertilizer zero growth rate, and improvement 1.5 hundred million mu, soil, promotes the target of soil organic matter content.
In addition, along with environmental pollution increases the weight of, the heavy metal contamination of soil also becomes a problem demanding prompt solution.If the heavy metal in soil can not effectively be processed, absorbed by crops, accumulate in vivo, after its product gathered in the crops is eaten, must chronic poisoning be produced, grievous injury human health.
Summary of the invention
In view of this, the present invention is intended to propose special humic acid chelate sustained-release fertilizer material of a kind of soybean and preparation method thereof, to improve the effect of humic acids, suppresses the absorption of crop heavy metal, reaches improvement soil, improve the effect of crop quality.
For achieving the above object, technical scheme of the present invention is achieved in that
The special humic acid chelate sustained-release fertilizer material of a kind of soybean, is characterized in that: the raw material comprising following parts by weight, humic acids 7 ~ 11 parts; 8 ~ 16 parts, urea; Monoammonium phosphate 38 ~ 47 parts; 16 ~ 23 parts, Repone K; 4 ~ 7 parts, liquefied ammonia; 0.5 ~ 1.5 part, zinc sulfate; Manganous sulfate 0.5 ~ 1.5 part; Ammonium molybdate 2 ~ 3 parts; Liquid sodium silicate 4 ~ 6 parts; The vitriol oil 4 ~ 5 parts.
Preferably, comprise the raw material of following parts by weight, humic acids 8 ~ 10 parts; 9 ~ 15 parts, urea; Monoammonium phosphate 40 ~ 45 parts; 17 ~ 22 parts, Repone K; 5 ~ 6 parts, liquefied ammonia; 1 part, zinc sulfate; Manganous sulfate 1 part; Ammonium molybdate 2.5 parts; Liquid sodium silicate 4 ~ 6 parts; The vitriol oil 4 ~ 5 parts.
Preferably, comprise the raw material of following parts by weight, humic acids 9 parts; 13 parts, urea; Monoammonium phosphate 43.5 parts; 17 parts, Repone K; 5 parts, liquefied ammonia; 1 part, zinc sulfate; Manganous sulfate 1 part; Ammonium molybdate 2.5 parts; Liquid sodium silicate 4 parts; The vitriol oil 4 parts.
Preferably, comprise the raw material of following parts by weight, humic acids 10 parts; 9 parts, urea; Monoammonium phosphate 43.5 parts; 20 parts, Repone K; 5 parts, liquefied ammonia; 1 part, zinc sulfate; Manganous sulfate 1 part; Ammonium molybdate 2.5 parts; Liquid sodium silicate 4 parts; The vitriol oil 4 parts.。
Preferably, N P and K total nutrient Han Liang≤48% in the final slow release fertilizer formed, You machine matter Han Liang≤5%, and containing sulphur, zinc, manganese, silicon, the molybdenum medium trace element needed for soybeans they grow.
Preferably, the mass percent of the organic matter contained in described humic acid is 60-70%; Preferably, 65%.
The present invention provides a kind of method preparing the special humic acid chelate sustained-release fertilizer material of soybean as above simultaneously, comprises the following steps,
1) in sour method compound fertilizer producing equipment, humic acids through measuring, zinc sulfate, manganous sulfate, ammonium molybdate, sulfuric acid and water are joined in the retort of sealing in proportion, heated and stirred 10-15 minute, make the mixing solutions of temperature 60 ~ 80 DEG C, mass concentration 70% ~ 80%, for subsequent use;
2) liquefied ammonia is joined tubular reactor, mix at tubular reactor with the mixing solutions prepared from step (1), make mixed slurry, a large amount of reaction heat utilizing propylhomoserin to react complete the acidifying of humic acids and the chelating of humic acids and medium trace element;
3) urea through measuring, monoammonium phosphate and Repone K are added rotary drum granulator, with from step 2) mixed slurry prepared completes granulation process in rotary drum granulator, utilize mixed slurry as amount of liquid phase needed for granulating in granulation process, its heat is utilized to carry out heated material, in rotary drum granulator, temperature of charge controls at 70 ~ 80 DEG C, granulation time 5 ~ 8min;
4) apart from rotary drum granulator outlet 0.5m ~ 0.7m place, through nozzle specially used, be sprayed onto the fertiliser granulates after granulation on the surface after being atomized by liquid sodium silicate, carry out coating, by wrapping up layer by layer, in a fertiliser granulates, forming multi-layered film body;
5) after granulation through drying, sieving, cool, be packaged to be the special humic acid chelate sustained-release fertilizer material of soybean.
Preferably, described step 5) in, after granulation, at dryer inner drying 30-40min, preferably, dry 35min; Dryer Outlet Gas Temperature is 50-60 DEG C, preferably, and 55 DEG C.
Preferably, described step 5) in, after oven dry, respectively through the screening of sieve diameter 2.5mm dusting cover and sieve diameter 4.5mm scalping screening; Preferably, respectively through the screening of sieve diameter 2.0mm dusting cover and sieve diameter 4.5mm scalping screening.
Relative to prior art, special humic acid chelate sustained-release fertilizer material of a kind of soybean of the present invention and preparation method thereof, has following advantage:
1) the present invention is by carrying out high temperature acidified process to humic acids, improves the quantity of active function group, improves the effect of humic acids.
2) utilize the heavy metal in humic acid chelating soil to generate precipitation, suppress the absorption of crop heavy metal.To reach improvement soil, improve the effect of crop quality.
3) product comprehensive nutrition, nutrient content is high, not only containing N P and K macroelement, also containing a large amount of sulphur, zinc, manganese, silicon, molybdenum medium trace element and organic matter, meets the needs of single fertilization, reduces cost of labor.Product has active high, promotes fertilizer synergistic, promotes soil fertility, and improvement soil physico-chemical property, improves crop quality and output, strengthens the effect of crop disease-resistant ability.
4) medium trace element chelating operation combines with sour method compound manure production technique, eliminates the preparation of chelate products, concentrated, drying and other steps, has simplified preparation flow.Chelate products, as the direct granulation of granulating amount of liquid phase, in turn saves a large amount of steam, decreases energy consumption.
5) liquid sodium silicate is utilized to carry out fertilizer coating, liquid sodium silicate agriculturally can manufacture silicon element fertilizer material, film body is compared with other film body adopting macromolecular material to make, can in degraded in soil, can not pollute edatope, the product made has had good sustained release effect, the advantage that cost is low.
6) product of the present invention can utilize existing sour method compound fertilizer producing equipment to make, and only needs to increase simple utility appliance, reduces the investment of special coated equipment.
Accompanying drawing explanation
The accompanying drawing forming a part of the present invention is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the schema of the preparation method of the special humic acid chelate sustained-release fertilizer material of the soybean described in the embodiment of the present invention;
Embodiment
Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
Embodiment one 15-23-10 product
The special humic acid chelate sustained-release fertilizer material of a kind of soybean, comprises the raw material of following weight, humic acids 90 kilograms; 130 kilograms, urea; Monoammonium phosphate 435 kilograms; 170 kilograms, Repone K; 50 kilograms, liquefied ammonia; 10 kilograms, zinc sulfate; Manganous sulfate 10 kilograms; Ammonium molybdate 25 kilograms; Liquid sodium silicate 40 kilograms; The vitriol oil 40 kilograms.
The schema of the preparation method of the special humic acid chelate sustained-release fertilizer material of soybean described in the present embodiment, as shown in Figure 1.
A preparation method for the special humic acid chelate sustained-release fertilizer material of soybean as above, comprises the steps:
1) in sour method compound fertilizer producing equipment, by humic acids (mass percent, lower same, containing organic 65%) 90 kilograms, 10 kilograms, zinc sulfate (sulfur-bearing, zinc element), manganous sulfate 10 kilograms (sulfur-bearing, manganese element), mass concentration is the vitriol oil (containing element sulphur) 40 kilograms of 98%, ammonium molybdate (containing molybdenum element) 25 kilograms and water, join in the retort of sealing, heated and stirred 15 minutes, in retort, make mass percentage concentration with water is 75%, the mixing solutions that temperature is 80 DEG C, for subsequent use;
2) by 50 kilograms, liquefied ammonia, join tubular reactor after metering, with step 1) mixing solutions prepared is driven into tubular reactor with pump after metering and makes mixed slurry, utilizes propylhomoserin reaction heat to complete the acidifying of humic acids and the chelating of humic acids and medium trace element;
3, add 130 kilograms, urea (containing N46.2%) through computer metering, powdery monoammonium phosphate is (containing N12%, P
2o
553%) 435 kilograms, Repone K is (containing K
2o60%) 170 kilograms, above-mentioned material with from step 2) mixed slurry mix in rotary drum granulator, after 7min granulation, 0.5m ~ 0.7m place is being exported apart from rotary drum granulator, through nozzle specially used, be sprayed onto the fertiliser granulates after granulation on the surface after being atomized by liquid sodium silicate (containing element silicon) 40 kilograms, carry out coating;
4) material enters dryer, dry 35min, drying machine Outlet Gas Temperature is 55 DEG C, and respectively through the screening of sieve diameter 2.0mm dusting cover and sieve diameter 4.5mm scalping screening after drying, the pulverulent material after dusting cover returns rotary drum granulator with the macrobead after scalping together with fragmentation;
5) salable product enter cooler, pack after cooling, obtained qualified product.
Product is containing N-P
2o
5-K
2o mass percent is 15.3%-23.1%-10.2%, and containing organic mass percent 5.85% and medium trace element, granularity 2 ~ 4.5mm is 97%, moisture content mass percent 1.8%.
Embodiment 2 13-23-12 product
The special humic acid chelate sustained-release fertilizer material of a kind of soybean, comprises the raw material of following weight, humic acids 100 kilograms; 90 kilograms, urea; Monoammonium phosphate 435 kilograms; 200 kilograms, Repone K; 50 kilograms, liquefied ammonia; 10 kilograms, zinc sulfate; Manganous sulfate 10 kilograms; Ammonium molybdate 25 kilograms; Liquid sodium silicate 40 kilograms; The vitriol oil 40 kilograms.
The schema of the preparation method of the special humic acid chelate sustained-release fertilizer material of soybean described in the present embodiment, as shown in Figure 1.
A preparation method for the special humic acid chelate sustained-release fertilizer material of soybean as above, comprises the steps:
1) in sour method compound fertilizer producing equipment, by humic acids (mass percent, lower same, containing organic 65%) 100 kilograms, 10 kilograms, zinc sulfate (sulfur-bearing, zinc element), manganous sulfate 10 kilograms (sulfur-bearing, manganese element), mass concentration is the vitriol oil (containing element sulphur) 40 kilograms of 98%, ammonium molybdate (containing molybdenum element) 25 kilograms and water, join in the retort of sealing, heated and stirred 15 minutes, in retort, make mass percentage concentration with water is 75%, the mixing solutions that temperature is 80 DEG C, for subsequent use;
2) by 50 kilograms, liquefied ammonia, join tubular reactor after metering, with step 1) mixing solutions prepared is driven into tubular reactor with pump after metering and makes mixed slurry, utilizes propylhomoserin reaction heat to complete the acidifying of humic acids and the chelating of humic acids and medium trace element;
3) add 90 kilograms, urea (containing N46.2%) through computer metering, powdery monoammonium phosphate is (containing N12%, P
2o
553%) 435 kilograms, Repone K is (containing K
2o60%) 200 kilograms, above-mentioned material with from step 2) mixed slurry mix in rotary drum granulator, after 7min granulation, 0.5m ~ 0.7m place is being exported apart from rotary drum granulator, through nozzle specially used, be sprayed onto the fertiliser granulates after granulation on the surface after being atomized by liquid sodium silicate (containing element silicon) 40 kilograms, carry out coating;
4) material enters dryer, dry 35min, drying machine Outlet Gas Temperature is 55 DEG C, and respectively through the screening of sieve diameter 2.0mm dusting cover and sieve diameter 4.5mm scalping screening after drying, the pulverulent material after dusting cover returns rotary drum granulator with the macrobead after scalping together with fragmentation;
5) salable product enter cooler, pack after cooling, obtained qualified product.
Product is containing N-P
2o
5-K
2o mass percent is 13.5%-23.1%-12.0%, and containing organic mass percent 6.50% and medium trace element, granularity 2 ~ 4.5mm is 98%, moisture content mass percent 1.9%.
The foregoing is only the preferred embodiment of the invention; not in order to limit the invention; within all spirit in the invention and principle, any amendment done, equivalent replacement, improvement etc., within the protection domain that all should be included in the invention.
Claims (9)
1. the special humic acid chelate sustained-release fertilizer material of soybean, is characterized in that: the raw material comprising following parts by weight, humic acids 7 ~ 11 parts; 8 ~ 16 parts, urea; Monoammonium phosphate 38 ~ 47 parts; 16 ~ 23 parts, Repone K; 4 ~ 7 parts, liquefied ammonia; 0.5 ~ 1.5 part, zinc sulfate; Manganous sulfate 0.5 ~ 1.5 part; Ammonium molybdate 2 ~ 3 parts; Liquid sodium silicate 4 ~ 6 parts; The vitriol oil 4 ~ 5 parts.
2. the special humic acid chelate sustained-release fertilizer material of soybean according to claim 1, is characterized in that: the raw material comprising following parts by weight, humic acids 8 ~ 10 parts; 9 ~ 15 parts, urea; Monoammonium phosphate 40 ~ 45 parts; 17 ~ 22 parts, Repone K; 5 ~ 6 parts, liquefied ammonia; 1 part, zinc sulfate; Manganous sulfate 1 part; Ammonium molybdate 2.5 parts; Liquid sodium silicate 4 ~ 6 parts; The vitriol oil 4 ~ 5 parts.
3. the special humic acid chelate sustained-release fertilizer material of soybean according to claim 1, is characterized in that: the raw material comprising following parts by weight, humic acids 9 parts; 13 parts, urea; Monoammonium phosphate 43.5 parts; 17 parts, Repone K; 5 parts, liquefied ammonia; 1 part, zinc sulfate; Manganous sulfate 1 part; Ammonium molybdate 2.5 parts; Liquid sodium silicate 4 parts; The vitriol oil 4 parts.
4. the special humic acid chelate sustained-release fertilizer material of soybean according to claim 1, is characterized in that: humic acids 10 parts; 9 parts, urea; Monoammonium phosphate 43.5 parts; 20 parts, Repone K; 5 parts, liquefied ammonia; 1 part, zinc sulfate; Manganous sulfate 1 part; Ammonium molybdate 2.5 parts; Liquid sodium silicate 4 parts; The vitriol oil 4 parts.
5. the special humic acid chelate sustained-release fertilizer material of the soybean according to any one of Claims 1 to 4, it is characterized in that: N P and K total nutrient Han Liang≤48% in the final slow release fertilizer formed, You machine matter Han Liang≤5%, and containing sulphur, zinc, manganese, silicon, the molybdenum medium trace element needed for soybeans they grow.
6. the special humic acid chelate sustained-release fertilizer material of the soybean according to any one of Claims 1 to 4, is characterized in that: the mass percent of the organic matter contained in described humic acid is 60-70%; Preferably, 65%.
7. prepare a method for the special humic acid chelate sustained-release fertilizer material of soybean as described in claim 1 ~ 6, it is characterized in that: comprise the following steps,
1) in sour method compound fertilizer producing equipment, humic acids through measuring, zinc sulfate, manganous sulfate, ammonium molybdate, sulfuric acid and water are joined in the retort of sealing in proportion, heated and stirred 10-15 minute, make the mixing solutions of temperature 60 ~ 80 DEG C, mass concentration 70% ~ 80%, for subsequent use;
2) liquefied ammonia is joined tubular reactor, mix at tubular reactor with the mixing solutions prepared from step (1), make mixed slurry, a large amount of reaction heat utilizing propylhomoserin to react complete the acidifying of humic acids and the chelating of humic acids and medium trace element;
3) urea through measuring, monoammonium phosphate and Repone K are added rotary drum granulator, with from step 2) mixed slurry prepared completes granulation process in rotary drum granulator, utilize mixed slurry as amount of liquid phase needed for granulating in granulation process, its heat is utilized to carry out heated material, in rotary drum granulator, temperature of charge controls at 70 ~ 80 DEG C, granulation time 5 ~ 8min;
4) apart from rotary drum granulator outlet 0.5m ~ 0.7m place, through nozzle specially used, be sprayed onto the fertiliser granulates after granulation on the surface after being atomized by liquid sodium silicate, carry out coating, by wrapping up layer by layer, in a fertiliser granulates, forming multi-layered film body;
5) the special humic acid chelate sustained-release fertilizer material of soybean is obtained through oven dry, screening, cooling packing after granulation.
8. the preparation method of the special humic acid chelate sustained-release fertilizer material of soybean according to claim 7, is characterized in that: described step 5) in, after granulation, at dryer inner drying 30-40min, preferably, dry 35min; Dryer Outlet Gas Temperature is 50-60 DEG C, preferably, and 55 DEG C.
9. the preparation method of the special humic acid chelate sustained-release fertilizer material of soybean according to claim 7, is characterized in that: described step 5) in, after oven dry, respectively through the screening of sieve diameter 2.5mm dusting cover and sieve diameter 4.5mm scalping screening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510687918.2A CN105152816A (en) | 2015-10-21 | 2015-10-21 | Humic acid chelating slow-release fertilizer special for soybeans and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510687918.2A CN105152816A (en) | 2015-10-21 | 2015-10-21 | Humic acid chelating slow-release fertilizer special for soybeans and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105152816A true CN105152816A (en) | 2015-12-16 |
Family
ID=54793929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510687918.2A Pending CN105152816A (en) | 2015-10-21 | 2015-10-21 | Humic acid chelating slow-release fertilizer special for soybeans and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105152816A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105801296A (en) * | 2016-03-10 | 2016-07-27 | 河南力浮科技有限公司 | Production method of nano humic acid cheated manganese fertilizer |
| CN108794260A (en) * | 2018-06-29 | 2018-11-13 | 陕西省蒲城绿桥农化有限责任公司 | A method of fulvic acid chelated iron fertilizer is prepared using solid-phase grinding technology |
| CN110590439A (en) * | 2019-08-26 | 2019-12-20 | 唐山滦胜农业科技有限公司 | High-tower slow-release compound fertilizer and preparation method thereof |
| CN111253196A (en) * | 2020-02-04 | 2020-06-09 | 中化农业（临沂）研发中心有限公司 | Humic acid chelated medium-trace element fertilizer and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103044157A (en) * | 2013-01-24 | 2013-04-17 | 山东红日阿康化工股份有限公司 | Amino acid guniting compound fertilizer and preparation method thereof |
| CN103073356A (en) * | 2013-02-06 | 2013-05-01 | 辽宁施壮肥业有限公司 | Production method of slow-release chelated compound fertilizer containing multiple elements |
| CN103193548A (en) * | 2013-05-03 | 2013-07-10 | 辽宁施壮肥业有限公司 | Organic-inorganic multi-element pollution-free compound fertilizer and preparation method thereof |
| 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 |
| CN103382140A (en) * | 2013-07-22 | 2013-11-06 | 辽宁施壮肥业有限公司 | Environment-friendly nitrogen potassium dressing fertilizer containing various nitrogen elements and preparation method thereof |
| WO2014205589A1 (en) * | 2013-06-27 | 2014-12-31 | Universidad de Concepción | Fertiliser for improving degraded soils and method for the production thereof |
-
2015
- 2015-10-21 CN CN201510687918.2A patent/CN105152816A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103044157A (en) * | 2013-01-24 | 2013-04-17 | 山东红日阿康化工股份有限公司 | Amino acid guniting compound fertilizer and preparation method thereof |
| CN103073356A (en) * | 2013-02-06 | 2013-05-01 | 辽宁施壮肥业有限公司 | Production method of slow-release chelated compound fertilizer containing multiple elements |
| CN103193548A (en) * | 2013-05-03 | 2013-07-10 | 辽宁施壮肥业有限公司 | Organic-inorganic multi-element pollution-free compound fertilizer and preparation method thereof |
| WO2014205589A1 (en) * | 2013-06-27 | 2014-12-31 | Universidad de Concepción | Fertiliser for improving degraded soils and method for the production thereof |
| 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 |
| CN103382140A (en) * | 2013-07-22 | 2013-11-06 | 辽宁施壮肥业有限公司 | Environment-friendly nitrogen potassium dressing fertilizer containing various nitrogen elements and preparation method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105801296A (en) * | 2016-03-10 | 2016-07-27 | 河南力浮科技有限公司 | Production method of nano humic acid cheated manganese fertilizer |
| CN108794260A (en) * | 2018-06-29 | 2018-11-13 | 陕西省蒲城绿桥农化有限责任公司 | A method of fulvic acid chelated iron fertilizer is prepared using solid-phase grinding technology |
| CN110590439A (en) * | 2019-08-26 | 2019-12-20 | 唐山滦胜农业科技有限公司 | High-tower slow-release compound fertilizer and preparation method thereof |
| CN111253196A (en) * | 2020-02-04 | 2020-06-09 | 中化农业（临沂）研发中心有限公司 | Humic acid chelated medium-trace element fertilizer and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101429072B (en) | Humic acid composite slow release fertilizer and producing method thereof | |
| CN105152791A (en) | Special humic acid chelated slow-release fertilizer for cotton and preparation method thereof | |
| CN105237295A (en) | Special humic acid chelated slow-release fertilizer for wheat and preparation method thereof | |
| CN103193548B (en) | Organic-inorganic multi-element pollution-free compound fertilizer and preparation method thereof | |
| CN102503687B (en) | Melt granulated polypeptide stable fertilizer and preparation method thereof | |
| CN103159550B (en) | Environment-friendly slow-release sulfur-based nitrogen potassium compound fertilizer | |
| CN103483110B (en) | Whole process is for nutrient compound manure and preparation method thereof | |
| CN104163729A (en) | High-tower granulation compound fertilizer containing Gamma-polyglutamic acid as well as preparation method and application of high-tower granulation compound fertilizer containing Gamma-polyglutamic acid | |
| CN104529674A (en) | Special humic acid fertilizer for sweet potatoes and preparation method of special humic acid fertilizer | |
| CN103664369B (en) | A kind of synergy loss controlling fertilizer and preparation method thereof | |
| CN105152816A (en) | Humic acid chelating slow-release fertilizer special for soybeans and preparation method thereof | |
| CN105481555A (en) | Biological organic-inorganic loss-controlled fertilizer with core-shell structure | |
| CN107082700A (en) | Tealeaves special fertilizer and fertilizing method | |
| CN105175163A (en) | Special ecological compound fertilizer for wheat and preparation method thereof | |
| CN102515911A (en) | High-nitrogen composite fertilizer and preparation method thereof | |
| CN104230571B (en) | A kind of dispersible biological compound fertilizer manufactured with gutter oil and its method for preparation | |
| CN105110999A (en) | Biological compound fertilizer for soybeans and preparation method of biological compound fertilizer | |
| CN103304323A (en) | Multi-element urea-based composite fertilizer and production method thereof | |
| CN105272590A (en) | Special humic acid chelated slow-release fertilizer for corn and preparation method of slow-release fertilizer | |
| CN105949010A (en) | Compound fertilizer special for high-activity multi-element wheat and preparation method thereof | |
| CN103936521B (en) | A kind of composite fertilizer and preparation method thereof | |
| CN105152792A (en) | Special ecological compound fertilizer for rice and preparation method thereof | |
| CN105272518A (en) | Humic acid chelating slow release fertilizer special for rice and preparation method thereof | |
| CN107176880A (en) | High tower is complexed production method of humic acid | |
| CN105948891A (en) | High-efficiency water-retaining blended fertilizer and production method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151216 |
|
| RJ01 | Rejection of invention patent application after publication |