CN106699455A - Degradable slow release fertilizer containing magnesium sulfate and preparing method thereof - Google Patents
Degradable slow release fertilizer containing magnesium sulfate and preparing method thereof Download PDFInfo
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- CN106699455A CN106699455A CN201611179937.5A CN201611179937A CN106699455A CN 106699455 A CN106699455 A CN 106699455A CN 201611179937 A CN201611179937 A CN 201611179937A CN 106699455 A CN106699455 A CN 106699455A
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- magnesium sulfate
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- containing magnesium
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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
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/80—Soil conditioners
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B7/00—Fertilisers based essentially on alkali or ammonium orthophosphates
-
- 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
-
- 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
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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pest Control & Pesticides (AREA)
- Soil Sciences (AREA)
- Fertilizers (AREA)
Abstract
The invention discloses a degradable slow release fertilizer containing magnesium sulfate. The fertilizer is prepared from, by weight, 10-20 parts of potassium phosphate, 10-20 parts of ammonium nitrate, 10-12 parts of ammonium dihydrogen phosphate, 5-10 parts of potassium nitrate, 10-15 parts of urea, 0.4-0.5 part of ammonium magnesium phosphate, 0.2-0.4 part of zinc sulfate, 0.2-0.4 part of magnesium sulfate, 0.2-0.3 part of ferric chloride, 0.1-0.2 part of manganese sulfate, 10-15 parts of charcoal, 5-10 parts of humic acid and 30-40 parts of coated material. The invention further discloses a preparing method of the degradable slow release fertilizer containing magnesium sulfate. The degradable slow release fertilizer containing magnesium sulfate is balanced in nutrition, can release nutrient slowly, and avoid pollution to the environment caused by nutrient loss; the water retention coated material can be degraded, which avoids secondary pollution to the environment, and meanwhile the material can retain water and fertilizer, improve the soil environment, and promote the crop growth.
Description
Technical field
The present invention relates to technical field of fertilizers, more particularly to a kind of degradable containing magnesium sulfate slow-release fertilizer and its preparation side
Method.
Background technology
For the fertile crops of some happinesses, in order to increase yield, people are long-term, largely use chemical fertilizer, but largely make for a long time
The problems such as causing soil hardening, body eutrophication with chemical fertilizer, the influence in order to avoid chemical fertilizer to environment, people increased
The usage amount of machine fertilizer and slow-release or control-release fertilizer, but, the conventional coated fertilizer of sustained-controll-release fertiliser is not degradable, can cause secondary to environment
Pollution.
The content of the invention
Based on background technology exist technical problem, the present invention propose a kind of degradable containing magnesium sulfate slow-release fertilizer and its
Preparation method, nutrition of the present invention is balanced, can slow Releasing nutrient, it is to avoid nutrient loss is polluted to environment；Water conservation coating material
Material is degradable, it is to avoid secondary pollution is caused to environment, and energy water conservation holds fertilizer, improves soil environment, promotes growth.
A kind of slow-release fertilizer of degradable containing magnesium sulfate proposed by the present invention, its raw material includes by weight：Potassium phosphate 10-20
Part, ammonium nitrate 10-20 parts, ammonium dihydrogen phosphate 10-12 parts, potassium nitrate 5-10 parts, urea 10-15 parts, ammonium magnesium phosphate 0.4-0.5
Part, zinc sulfate 0.2-0.4 parts, magnesium sulfate 0.2-0.4 parts, iron chloride 0.2-0.3 parts, manganese sulfate 0.1-0.2 parts, charcoal 10-
15 parts, humic acid 5-10 parts, coated fertilizer 30-40 parts.
Preferably, its raw material includes by weight：Potassium phosphate 12-18 parts, ammonium nitrate 13-17 parts, ammonium dihydrogen phosphate 10.5-
11.5 parts, potassium nitrate 6-8 parts, urea 12-14 parts, ammonium magnesium phosphate 0.42-0.48 parts, zinc sulfate 0.25-0.35 parts, magnesium sulfate
0.25-0.35 parts, iron chloride 0.23-0.27 parts, manganese sulfate 0.12-0.18 parts, charcoal 11-13 parts, humic acid 6-8 parts, bag
Membrane material 32-38 parts.
Preferably, in the preparation process of coated fertilizer, carboxymethyl chitosan, humic acid are added to the water dissolving, then
Sodium peroxydisulfate, N are added, N- methylene-bisacrylamides, charcoal are uniformly mixed so as to obtain solution A；Itaconic acid is added to the water dissolving, is adjusted
Section pH obtains solution B；In nitrogen atmosphere, during solution B dropped into solution A, heat up, insulated and stirred is dried to obtain coating material
Material.
Preferably, in the preparation process of coated fertilizer, carboxymethyl chitosan, humic acid are added to the water dissolving, then
Sodium peroxydisulfate, N are added, N- methylene-bisacrylamides, charcoal are uniformly mixed so as to obtain solution A；Itaconic acid is added to the water dissolving, is adjusted
Section pH=7-7.5 obtains solution B；In nitrogen atmosphere, during solution B dropped into solution A, 70-80 DEG C, insulated and stirred are warming up to
2-3h, dry, pulverize and obtain coated fertilizer.
Preferably, coated fertilizer is 80-100 mesh, and charcoal is 600-800 mesh.
Preferably, in the preparation process of coated fertilizer, pH=7-7.5 is adjusted with sodium hydrate aqueous solution.
Preferably, in the preparation process of coated fertilizer, carboxymethyl chitosan, humic acid, sodium peroxydisulfate, N, N- methylene
Bisacrylamide, charcoal, the weight ratio of itaconic acid are 4-6：2-3：0.2-0.3：0.04-0.06：10-12：46-52.
The invention allows for the preparation method of the slow-release fertilizer of above-mentioned degradable containing magnesium sulfate, comprise the following steps：To urine
Element sprinkling atomized water soaks urea surface, adds potassium phosphate, ammonium nitrate, ammonium dihydrogen phosphate, potassium nitrate, ammonium magnesium phosphate, sulfuric acid
Zinc, magnesium sulfate, iron chloride, manganese sulfate, charcoal, humic acid are uniformly mixed so as to obtain intermediate particle；Make to intermediate particle sprinkling atomized water
Intermediate particle moistened surface, adds coated fertilizer to mix, and drying obtains the slow-release fertilizer of degradable containing magnesium sulfate.
Preferably, drying temperature is 50-60 DEG C.
In the preparation process of above-mentioned coated fertilizer, water does not specify its consumption as reaction dissolvent, is determined according to concrete operations
Its consumption.
In the preparation method of the slow-release fertilizer of above-mentioned degradable containing magnesium sulfate, the effect of atomized water is to soak surface of material,
Do not specify its consumption, soak.
The present invention coats to be adsorbed in and kernel is formed on fertilizer by charcoal, and coats coated fertilizer, reaches the mesh of sustained release
's；Carboxymethyl chitosan, humic acid and itaconic acid are biodegradable, it is to avoid pollution to environment；By carboxymethyl chitosan
Sugar, humic acid and itaconic acid reaction so that carboxymethyl chitosan, polyvinyl alcohol and Itaconic Acid Grafted, crosslinking copolymerization, by copolymerization
Act on forming complex cross-linked interpenetrating networks with grafting, charcoal forms coated fertilizer in being filled in crosslinking interpenetrating networks, increases
Plus the mechanical performance of coated fertilizer, so as to while degradation property of the present invention is increased, it is to avoid coated fertilizer mechanical performance is low
Under problem, facilitate industrial production；Carboxymethyl chitosan and charcoal are cooperated so that the present invention is protected with good water holding
Outlet capacity, promotes absorption of the crops to nutrient；Humic acid and charcoal cooperate, and can improve soil environment, promote agriculture
The growth of crop；Charcoal has good suction-operated, and coated fertilizer is closely connected with the charcoal on kernel, further increases
Plus water holding function of fertilizer retention of the present invention so that the rate of release of nutrient is adapted to the demand of crops, it is to avoid excessive bleed, promotes farming
Thing grows；The present invention is cooperated by each material and provides balanced nutritious, promotes crop growth, and by with degradable
Water conservation coated fertilizer adjusts the rate of release of nutrient, it is to avoid nutrient loss, pollutes environment, and degradable coated fertilizer also will not be to ring
Secondary pollution is caused in border, and energy water conservation holds fertilizer, improves soil environment, promotes crop growth.
Specific embodiment
Below, technical scheme is described in detail by specific embodiment.
Embodiment 1
A kind of slow-release fertilizer of degradable containing magnesium sulfate, its raw material includes by weight：15 parts of potassium phosphate, 15 parts of ammonium nitrate,
11 parts of ammonium dihydrogen phosphate, 7 parts of potassium nitrate, 13 parts of urea, 0.45 part of ammonium magnesium phosphate, 0.3 part of zinc sulfate, 0.3 part of magnesium sulfate, chlorination
0.25 part of iron, 0.15 part of manganese sulfate, 12 parts of charcoal, 7 parts of humic acid, 35 parts of coated fertilizer.
The preparation method of the slow-release fertilizer of above-mentioned degradable containing magnesium sulfate, comprises the following steps：Make to urea sprinkling atomized water
Urea surface is soaked, and adds potassium phosphate, ammonium nitrate, ammonium dihydrogen phosphate, potassium nitrate, ammonium magnesium phosphate, zinc sulfate, magnesium sulfate, chlorination
Iron, manganese sulfate, charcoal, humic acid are uniformly mixed so as to obtain intermediate particle；Moisten intermediate particle surface to intermediate particle sprinkling atomized water
It is wet, add coated fertilizer to mix, drying obtains the slow-release fertilizer of degradable containing magnesium sulfate.
Embodiment 2
A kind of slow-release fertilizer of degradable containing magnesium sulfate, its raw material includes by weight：10 parts of potassium phosphate, 20 parts of ammonium nitrate,
10 parts of ammonium dihydrogen phosphate, 10 parts of potassium nitrate, 10 parts of urea, 0.5 part of ammonium magnesium phosphate, 0.2 part of zinc sulfate, 0.4 part of magnesium sulfate, chlorination
0.2 part of iron, 0.2 part of manganese sulfate, 800 10 parts of mesh charcoals, 10 parts of humic acid, 30 parts of coated fertilizer；
Wherein, in the preparation process of coated fertilizer, carboxymethyl chitosan, humic acid are added to the water dissolving, Ran Houjia
Enter sodium peroxydisulfate, N, N- methylene-bisacrylamides, 800 mesh charcoals are uniformly mixed so as to obtain solution A；Itaconic acid is added to the water molten
Solution, adjusts pH=7 and obtains solution B with sodium hydrate aqueous solution；In nitrogen atmosphere, during solution B dropped into solution A, heat up
To 80 DEG C, insulated and stirred 2h dry, pulverize to 100 mesh and obtain coated fertilizer, wherein, carboxymethyl chitosan, humic acid, over cure
Sour sodium, N, N- methylene-bisacrylamides, charcoal, the weight ratio of itaconic acid are 4：3：0.2：0.06：10：52.
The preparation method of the slow-release fertilizer of above-mentioned degradable containing magnesium sulfate, comprises the following steps：Make to urea sprinkling atomized water
Urea surface is soaked, and adds potassium phosphate, ammonium nitrate, ammonium dihydrogen phosphate, potassium nitrate, ammonium magnesium phosphate, zinc sulfate, magnesium sulfate, chlorination
Iron, manganese sulfate, charcoal, humic acid are uniformly mixed so as to obtain intermediate particle；Moisten intermediate particle surface to intermediate particle sprinkling atomized water
It is wet, add coated fertilizer to mix, 50 DEG C are warming up to, drying obtains the slow-release fertilizer of degradable containing magnesium sulfate.
Embodiment 3
A kind of slow-release fertilizer of degradable containing magnesium sulfate, its raw material includes by weight：20 parts of potassium phosphate, 10 parts of ammonium nitrate,
12 parts of ammonium dihydrogen phosphate, 5 parts of potassium nitrate, 15 parts of urea, 0.4 part of ammonium magnesium phosphate, 0.4 part of zinc sulfate, 0.2 part of magnesium sulfate, chlorination
0.3 part of iron, 0.1 part of manganese sulfate, 600 15 parts of mesh charcoals, 5 parts of humic acid, 40 parts of coated fertilizer；
Wherein, in the preparation process of coated fertilizer, carboxymethyl chitosan, humic acid are added to the water dissolving, Ran Houjia
Enter sodium peroxydisulfate, N, N- methylene-bisacrylamides, 600 mesh charcoals are uniformly mixed so as to obtain solution A；Itaconic acid is added to the water molten
Solution, adjusts pH=7.5 and obtains solution B with sodium hydrate aqueous solution；In nitrogen atmosphere, during solution B dropped into solution A, rise
To 70 DEG C, insulated and stirred 3h dry, pulverize to 80 mesh and obtains coated fertilizer temperature, wherein, carboxymethyl chitosan, humic acid, over cure
Sour sodium, N, N- methylene-bisacrylamides, charcoal, the weight ratio of itaconic acid are 6：2：0.3：0.04：12：46.
The preparation method of the slow-release fertilizer of above-mentioned degradable containing magnesium sulfate, comprises the following steps：Make to urea sprinkling atomized water
Urea surface is soaked, and adds potassium phosphate, ammonium nitrate, ammonium dihydrogen phosphate, potassium nitrate, ammonium magnesium phosphate, zinc sulfate, magnesium sulfate, chlorination
Iron, manganese sulfate, charcoal, humic acid are uniformly mixed so as to obtain intermediate particle；Moisten intermediate particle surface to intermediate particle sprinkling atomized water
It is wet, add coated fertilizer to mix, 60 DEG C are warming up to, drying obtains the slow-release fertilizer of degradable containing magnesium sulfate.
Embodiment 4
A kind of slow-release fertilizer of degradable containing magnesium sulfate, its raw material includes by weight：12 parts of potassium phosphate, 17 parts of ammonium nitrate,
10.5 parts of ammonium dihydrogen phosphate, 8 parts of potassium nitrate, 12 parts of urea, 0.48 part of ammonium magnesium phosphate, 0.25 part of zinc sulfate, 0.35 part of magnesium sulfate,
0.23 part of iron chloride, 0.18 part of manganese sulfate, 600 13 parts of mesh charcoals, 6 parts of humic acid, 38 parts of coated fertilizer；
Wherein, in the preparation process of coated fertilizer, carboxymethyl chitosan, humic acid are added to the water dissolving, Ran Houjia
Enter sodium peroxydisulfate, N, N- methylene-bisacrylamides, 600 mesh charcoals are uniformly mixed so as to obtain solution A；Itaconic acid is added to the water molten
Solution, adjusts pH=7.3 and obtains solution B with sodium hydrate aqueous solution；In nitrogen atmosphere, during solution B dropped into solution A, rise
To 72 DEG C, insulated and stirred 2.8h dry, pulverize to 80 mesh and obtains coated fertilizer temperature, wherein, carboxymethyl chitosan, humic acid, mistake
Sodium sulphate, N, N- methylene-bisacrylamides, charcoal, the weight ratio of itaconic acid are 5.5：2.3：0.28：0.045：11.5：
48。
The preparation method of the slow-release fertilizer of above-mentioned degradable containing magnesium sulfate, comprises the following steps：Make to urea sprinkling atomized water
Urea surface is soaked, and adds potassium phosphate, ammonium nitrate, ammonium dihydrogen phosphate, potassium nitrate, ammonium magnesium phosphate, zinc sulfate, magnesium sulfate, chlorination
Iron, manganese sulfate, charcoal, humic acid are uniformly mixed so as to obtain intermediate particle；Moisten intermediate particle surface to intermediate particle sprinkling atomized water
It is wet, add coated fertilizer to mix, 58 DEG C are warming up to, drying obtains the slow-release fertilizer of degradable containing magnesium sulfate.
Embodiment 5
A kind of slow-release fertilizer of degradable containing magnesium sulfate, its raw material includes by weight：18 parts of potassium phosphate, 13 parts of ammonium nitrate,
11.5 parts of ammonium dihydrogen phosphate, 6 parts of potassium nitrate, 14 parts of urea, 0.42 part of ammonium magnesium phosphate, 0.35 part of zinc sulfate, 0.25 part of magnesium sulfate,
0.27 part of iron chloride, 0.12 part of manganese sulfate, 800 11 parts of mesh charcoals, 8 parts of humic acid, 32 parts of coated fertilizer；
Wherein, in the preparation process of coated fertilizer, carboxymethyl chitosan, humic acid are added to the water dissolving, Ran Houjia
Enter sodium peroxydisulfate, N, N- methylene-bisacrylamides, 800 mesh charcoals are uniformly mixed so as to obtain solution A；Itaconic acid is added to the water molten
Solution, adjusts pH=7.1 and obtains solution B with sodium hydrate aqueous solution；In nitrogen atmosphere, during solution B dropped into solution A, rise
Temperature to 78 DEG C, insulated and stirred 2.2h dry, pulverize to 100 mesh and obtain coated fertilizer, wherein, carboxymethyl chitosan, humic acid,
Sodium peroxydisulfate, N, N- methylene-bisacrylamides, charcoal, the weight ratio of itaconic acid are 4.5：2.7：0.22：0.055：10.5：
50。
The preparation method of the slow-release fertilizer of above-mentioned degradable containing magnesium sulfate, comprises the following steps：Make to urea sprinkling atomized water
Urea surface is soaked, and adds potassium phosphate, ammonium nitrate, ammonium dihydrogen phosphate, potassium nitrate, ammonium magnesium phosphate, zinc sulfate, magnesium sulfate, chlorination
Iron, manganese sulfate, charcoal, humic acid are uniformly mixed so as to obtain intermediate particle；Moisten intermediate particle surface to intermediate particle sprinkling atomized water
It is wet, add coated fertilizer to mix, 52 DEG C are warming up to, drying obtains the slow-release fertilizer of degradable containing magnesium sulfate.
Test example 1
Embodiment 1-5 is detected, it is as a result as follows：
As can be seen from the above table, slow-release function of the present invention is good, and coated fertilizer can be degradable.
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technology according to the present invention scheme and its
Inventive concept is subject to equivalent or change, should all be included within the scope of the present invention.
Claims (8)
1. a kind of slow-release fertilizer of degradable containing magnesium sulfate, it is characterised in that its raw material includes by weight：Potassium phosphate 10-20 parts,
Ammonium nitrate 10-20 parts, ammonium dihydrogen phosphate 10-12 parts, potassium nitrate 5-10 parts, urea 10-15 parts, ammonium magnesium phosphate 0.4-0.5 parts, sulphur
Sour zinc 0.2-0.4 parts, magnesium sulfate 0.2-0.4 parts, iron chloride 0.2-0.3 parts, manganese sulfate 0.1-0.2 parts, charcoal 10-15 parts,
Humic acid 5-10 parts, coated fertilizer 30-40 parts.
2. the slow-release fertilizer of degradable containing magnesium sulfate according to claim 1, it is characterised in that in the preparation process of coated fertilizer
In, carboxymethyl chitosan, humic acid are added to the water dissolving, it is subsequently adding sodium peroxydisulfate, N, N- methylene-bisacrylamides, life
Thing charcoal is uniformly mixed so as to obtain solution A；Itaconic acid is added to the water dissolving, regulation pH obtains solution B；In nitrogen atmosphere, solution B is dripped
Add in solution A, heat up, insulated and stirred is dried to obtain coated fertilizer.
3. the slow-release fertilizer of degradable containing magnesium sulfate according to claim 1 or claim 2, it is characterised in that in the preparation of coated fertilizer
During, carboxymethyl chitosan, humic acid are added to the water dissolving, it is subsequently adding sodium peroxydisulfate, N, N- methylene bisacrylamide acyls
Amine, charcoal are uniformly mixed so as to obtain solution A；Itaconic acid is added to the water dissolving, regulation pH=7-7.5 obtains solution B；In nitrogen atmosphere
In, during solution B dropped into solution A, 70-80 DEG C being warming up to, insulated and stirred 2-3h dry, pulverize and obtain coated fertilizer.
4. according to claim any one of 1-3 degradable containing magnesium sulfate slow-release fertilizer, it is characterised in that coated fertilizer is
80-100 mesh, charcoal is 600-800 mesh.
5. according to claim any one of 2-4 degradable containing magnesium sulfate slow-release fertilizer, it is characterised in that in coated fertilizer
In preparation process, pH=7-7.5 is adjusted with sodium hydrate aqueous solution.
6. according to claim any one of 2-5 degradable containing magnesium sulfate slow-release fertilizer, it is characterised in that in coated fertilizer
In preparation process, carboxymethyl chitosan, humic acid, sodium peroxydisulfate, N, N- methylene-bisacrylamides, charcoal, itaconic acid
Weight ratio is 4-6：2-3：0.2-0.3：0.04-0.06：10-12：46-52.
7. a kind of preparation method of the slow-release fertilizer of the degradable containing magnesium sulfate as described in claim any one of 1-6, it is characterised in that
Comprise the following steps：Urea surface is soaked to urea sprinkling atomized water, potassium phosphate, ammonium nitrate, ammonium dihydrogen phosphate, nitric acid is added
Potassium, ammonium magnesium phosphate, zinc sulfate, magnesium sulfate, iron chloride, manganese sulfate, charcoal, humic acid are uniformly mixed so as to obtain intermediate particle；To centre
Spraying particles atomized water makes intermediate particle moistened surface, adds coated fertilizer to mix, and drying obtains the slow of degradable containing magnesium sulfate
Release fertilizer.
8. the preparation method of the slow-release fertilizer of degradable containing magnesium sulfate according to claim 7, it is characterised in that drying temperature is
50-60℃。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201611179937.5A CN106699455A (en) | 2016-12-19 | 2016-12-19 | Degradable slow release fertilizer containing magnesium sulfate and preparing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611179937.5A CN106699455A (en) | 2016-12-19 | 2016-12-19 | Degradable slow release fertilizer containing magnesium sulfate and preparing method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109748677A (en) * | 2017-11-03 | 2019-05-14 | 丹阳市皇塘镇蒋墅天意土元专业合作社 | A kind of bio-feritlizer of containing magnesium sulfate |
| CN113402323A (en) * | 2021-07-08 | 2021-09-17 | 百色学院 | Special fertilizer for sugarcane primary root zone and preparation process thereof |
| US11124461B2 (en) | 2019-07-04 | 2021-09-21 | Incitec Pivot Limited | Fertilizer |
| WO2024028835A1 (en) * | 2022-08-04 | 2024-02-08 | Sabic Global Technologies B.V. | Complex fertilizer comprising nitrogen, phosphorous, and sulfur encapsulated within secondary calcium and magnesium nutrients |
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| WO2012107603A1 (en) * | 2011-02-07 | 2012-08-16 | Fertinagro Nutrientes, S.L. | Method for producing a biological fertilizer and biological fertilizer thus produced |
| CN105294261A (en) * | 2015-10-30 | 2016-02-03 | 全椒县琪悦家庭农场 | Environment-friendly slow releasing compound fertilizer |
| CN105347915A (en) * | 2015-10-30 | 2016-02-24 | 全椒县琪悦家庭农场 | Degradable slow-release mixed fertilizer and preparation method thereof |
| CN105347916A (en) * | 2015-10-30 | 2016-02-24 | 全椒县琪悦家庭农场 | Sterilization soil-improvement slow-release composite fertilizer and preparation method thereof |
| CN105693433A (en) * | 2014-11-28 | 2016-06-22 | 江阴市联业生物科技有限公司 | Biomass charcoal-coated slow release fertilizer preparation technology |
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Patent Citations (5)
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| WO2012107603A1 (en) * | 2011-02-07 | 2012-08-16 | Fertinagro Nutrientes, S.L. | Method for producing a biological fertilizer and biological fertilizer thus produced |
| CN105693433A (en) * | 2014-11-28 | 2016-06-22 | 江阴市联业生物科技有限公司 | Biomass charcoal-coated slow release fertilizer preparation technology |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109748677A (en) * | 2017-11-03 | 2019-05-14 | 丹阳市皇塘镇蒋墅天意土元专业合作社 | A kind of bio-feritlizer of containing magnesium sulfate |
| US11124461B2 (en) | 2019-07-04 | 2021-09-21 | Incitec Pivot Limited | Fertilizer |
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| CN113402323A (en) * | 2021-07-08 | 2021-09-17 | 百色学院 | Special fertilizer for sugarcane primary root zone and preparation process thereof |
| WO2024028835A1 (en) * | 2022-08-04 | 2024-02-08 | Sabic Global Technologies B.V. | Complex fertilizer comprising nitrogen, phosphorous, and sulfur encapsulated within secondary calcium and magnesium nutrients |
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Application publication date: 20170524 |