CN111348953A - Ammonium-potassium-magnesium phosphate environment-friendly slow-release fertilizer and preparation method thereof - Google Patents
Ammonium-potassium-magnesium phosphate environment-friendly slow-release fertilizer and preparation method thereof Download PDFInfo
- Publication number
- CN111348953A CN111348953A CN202010263903.4A CN202010263903A CN111348953A CN 111348953 A CN111348953 A CN 111348953A CN 202010263903 A CN202010263903 A CN 202010263903A CN 111348953 A CN111348953 A CN 111348953A
- Authority
- CN
- China
- Prior art keywords
- potassium
- release fertilizer
- phosphate
- ammonium
- drying
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B7/00—Fertilisers based essentially on alkali or ammonium orthophosphates
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/18—Carbonates
- C01F11/181—Preparation of calcium carbonate by carbonation of aqueous solutions and characterised by control of the carbonation conditions
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2/00—Lime, magnesia or dolomite
- C04B2/10—Preheating, burning calcining or cooling
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2/00—Lime, magnesia or dolomite
- C04B2/10—Preheating, burning calcining or cooling
- C04B2/102—Preheating, burning calcining or cooling of magnesia, e.g. dead burning
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B11/00—Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes
- C05B11/04—Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes using mineral acid
- C05B11/08—Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes using mineral acid using sulfuric acid
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Fertilizers (AREA)
Abstract
The invention relates to an ammonium phosphate potassium magnesium environment-friendly slow-release fertilizer and a preparation method thereof. The raw materials are proportioned and mixed; the mixing is crushed in sequence, and the crushing fineness is 100-150 meshes; then granulating, drying after the granulation is qualified, wherein the drying condition is 150-; and (4) after drying, immediately cooling by an upper cooling machine to normal temperature, screening, bagging and warehousing. The ammonium phosphate potassium magnesium environment-friendly slow-release fertilizer provided by the invention is dissolved with acid substances secreted by plant roots and microorganisms in soil, can exert the effect for a long time after being applied once, and can be used as a base fertilizer during cultivation and transplantation. The fertilizer can quickly absorb and permeate effective components into plants, promote the plants to generate new roots and buds, obviously improve the yield and quality of the plants, and has certain resistance to common diseases of crops.
Description
Technical Field
The invention belongs to the technical field of chemical fertilizers, and particularly relates to an ammonium-potassium-magnesium phosphate environment-friendly slow-release fertilizer and a preparation method thereof.
Background
The calcium-magnesia phosphate fertilizer is mainly prepared by calcining high-grade phosphate ore at a high temperature of more than 1250 ℃ under the catalytic action of serpentine and then crushing with water, drying and grinding, and has the advantages of high production cost, high equipment investment cost, large fertilizer loss after fertilization and short lasting and effective fertility time.
Disclosure of Invention
The invention aims to overcome the technical difficulties and provide the environment-friendly slow-release fertilizer containing ammonium, potassium and magnesium phosphate and long in effective duration and the preparation method thereof.
The specific technical scheme is as follows:
an environment-friendly slow-release fertilizer containing ammonium phosphate, potassium and magnesium phosphate is prepared from ammonium dihydrogen phosphate, potassium dihydrogen phosphate, magnesium oxide and calcium powder.
Further, the raw materials are as follows by mass percent: 57-61% of ammonium dihydrogen phosphate, 18-21% of potassium dihydrogen phosphate, 18-22% of magnesium oxide and 1-5% of calcium powder, wherein the total amount is 100%.
Preferably, the effective content of each element is, N: 5 to 7 percent; p205：38-42％；K:5-7％；Mg：15-19％。
The preparation method of the ammonium-potassium-magnesium phosphate environment-friendly slow-release fertilizer comprises the following steps: the raw materials are proportioned and mixed; the mixing is crushed in sequence, and the crushing fineness is 100-150 meshes; then granulating, drying after the granulation is qualified, wherein the drying condition is 150-; and (4) after drying, immediately cooling by an upper cooling machine to normal temperature, screening, bagging and warehousing.
Ammonium dihydrogen phosphate and potassium dihydrogen phosphate, which are prepared by the following preparation method:
(1) decomposing phosphorite with sulfuric acid to prepare wet-process phosphoric acid, diluting the wet-process phosphoric acid with water to a proper concentration, mixing phosphate ore pulp and the diluted wet-process phosphoric acid at an equal molar ratio under the condition of about 75 ℃, keeping the temperature and stirring, reacting for half an hour, separating by a centrifugal machine after the reaction is finished, removing desulfurization residues, and obtaining a desulfurization clear solution;
(2) mixing and stirring the desulfurized clear liquid and liquid ammonia for reaction, wherein the reaction conditions are that the pH value is 4.5-5.0, and the temperature is 92-98 ℃; after the reaction is finished, separating and removing neutralization residues by a centrifugal machine to obtain primary neutralization clear liquid;
(3) reacting the primary neutralized clear liquid with liquid ammonia again, wherein the reaction condition is that the pH value is 8.5-9.0; after the reaction is finished, separating and removing neutralization residues by a centrifugal machine to obtain secondary neutralized clear liquid;
(4) adjusting the pH value of the secondary neutralized clear liquid to 4.3-4.5 by using high-purity phosphoric acid, and performing multi-effect flash evaporation concentration after adjustment, wherein the concentration conditions are as follows: obtaining ammonium dihydrogen phosphate concentrated material at 100-110 ℃;
(5) cooling the ammonium dihydrogen phosphate concentrated material under stirring, cooling to normal temperature, separating by a centrifuge to obtain ammonium dihydrogen phosphate crystals and ammonium dihydrogen phosphate mother liquor, and drying the ammonium dihydrogen phosphate crystals to obtain finished ammonium dihydrogen phosphate;
(6) diluting the separated ammonium dihydrogen phosphate mother liquor with water, and adding potassium chloride, wherein the molar ratio of the ammonium dihydrogen phosphate to the potassium chloride is 1: 1.5, the reaction conditions are as follows: the temperature is 95-98 ℃, and the reaction time is 2 h; after the reaction is finished, separating and removing neutralization residues by using a centrifugal machine to obtain clear liquid, adjusting the pH value of the clear liquid to 4.0-4.5 by using high-purity phosphoric acid, and performing multi-effect flash evaporation concentration to obtain a potassium dihydrogen phosphate concentrated material;
(7) crystallizing the potassium dihydrogen phosphate concentrate, cooling the crystallized potassium dihydrogen phosphate concentrate to about 50 ℃, separating the crystallized potassium dihydrogen phosphate concentrate by a centrifugal machine to obtain potassium dihydrogen phosphate crystals, and drying the potassium dihydrogen phosphate crystals to obtain the potassium dihydrogen phosphate.
The preparation method of the magnesium oxide and the calcium carbonate comprises the following steps:
(1) calcining dolomite at the temperature of 1000-;
(2) carrying out digestion and grading treatment on calcined dolomite;
(3) carbonizing the raw materials subjected to grading treatment at normal pressure;
(4) carrying out pressure carbonization on the raw material after the normal pressure carbonization treatment;
(5) the raw materials after the pressure carbonization treatment obtain mixed solution of heavy magnesium water and calcium carbonate, and the mixed solution is sent into a filter press to separate out the heavy magnesium water and crude calcium carbonate;
(6) separating the heavy magnesium water into basic magnesium carbonate and hot waste magnesium water by a filter press;
(7) and respectively drying and lightly burning the basic magnesium carbonate and the crude calcium carbonate to obtain magnesium oxide and calcium carbonate.
Preferably, the product of the present invention has a preferable invention point that it may further comprise: the total weight of the product is 2-5% of bone meal and 2-8% of hoof and horn powder. The preparation method of the hoof and horn powder comprises the following steps: the hoof and horn refers to hoof of cattle, horse, sheep and donkey and horns of cattle and sheep (preferably hoof, ox horn, sheep hoof and sheep horn), which are cleaned, sterilized at high temperature and high pressure (preferably steaming at 120 ℃ under 2 pressures), aired and crushed, and the diameter of the treated particles is 1-8mm (namely, the maximum side length of the irregular particles is preferably not more than 8mm, and the minimum side length is preferably not less than 1 mm), wherein the weight ratio of the hoof powder to the horn powder is 2: 3. The optimized weight proportion of the hoof powder and the horn powder is the invention point of the invention, the proportion is the optimal ratio obtained by a plurality of tests of the inventor, and the organic fertilizer obtained under the optimal ratio has very good effect. The above results are obtained by the inventor through many years of experiments, because a large amount of horns of animals have no effect in the northeast region, the inventor tries to use the horns as the processing raw material of bone meal, and obtains better effect than the horns which are not added before, so that the hoofs of the animals can be added in the expanded thought, and the hoof powder is added after the experiments are performed on wheat and vegetables (Chinese cabbage and rape), so that the hoof powder has the effect of growing more rapidly and rooting more firmly.
The invention has the following advantages:
the ammonium phosphate potassium magnesium environment-friendly slow-release fertilizer provided by the invention is dissolved with acid substances secreted by plant roots and microorganisms in soil, can exert the effect for a long time after being applied once, and can be used as a base fertilizer during cultivation and transplantation. The fertilizer can quickly absorb and permeate effective components into plants, promote the plants to generate new roots and buds, obviously improve the yield and quality of the plants, and has certain resistance to common diseases of crops.
The invention provides an ammonium phosphate potassium magnesium environment-friendly slow-release fertilizer which is mainly characterized in that:
1. it is only required to be mixed with soil and cultivated immediately after mixing.
2. The fertilizer efficiency lasts for a long time (1-2 years).
3. Rooting, strengthening the plant, increasing yield, making the plant have strong growth ability, developed root system, flourishing branches and leaves, and making the vegetative growth converted into reproductive growth. After the application, the leaves are dark green, the branches, buds and buds are obviously increased, the flowers are bright in color and are not easy to wither.
4. No pollution, no peculiar smell and no sundries, and can be used in balconies and rooms.
Detailed Description
The present invention will be further illustrated with reference to the following specific examples, but the scope of the present invention is not limited thereto.
Example 1
An environment-friendly slow-release fertilizer containing ammonium phosphate, potassium and magnesium phosphate is prepared from ammonium dihydrogen phosphate (57%), potassium dihydrogen phosphate (21%), magnesium oxide (19%), calcium powder (3%) and 100% by weight.
The effective content of each element is qualified in the following range, N: 5 to 7 percent; p205：38-42％；K:5-7％；Mg：15-19％。
The preparation method of the ammonium-potassium-magnesium phosphate environment-friendly slow-release fertilizer comprises the following steps: the raw materials are proportioned and mixed; the mixing is crushed in sequence, and the crushing fineness is 100-150 meshes; then granulating, drying after the granulation is qualified, wherein the drying condition is 150-; and (4) after drying, immediately cooling by an upper cooling machine to normal temperature, screening, bagging and warehousing.
Example 2
An environment-friendly slow-release fertilizer containing ammonium phosphate, potassium and magnesium phosphate is prepared from ammonium dihydrogen phosphate (58%), potassium dihydrogen phosphate (19%), magnesium oxide (22%) and calcium powder (1%).
The effective content of each element is qualified in the following range, N: 5 to 7 percent; p205：38-42％；K:5-7％；Mg：15-19％。
The preparation method of the ammonium-potassium-magnesium phosphate environment-friendly slow-release fertilizer comprises the following steps: the raw materials are proportioned and mixed; the mixing is crushed in sequence, and the crushing fineness is 100-150 meshes; then granulating, drying after the granulation is qualified, wherein the drying condition is 150-; and (4) after drying, immediately cooling by an upper cooling machine to normal temperature, screening, bagging and warehousing.
Example 3
An environment-friendly slow-release fertilizer containing ammonium phosphate, potassium and magnesium phosphate is prepared from ammonium dihydrogen phosphate (60%), potassium dihydrogen phosphate (18%), magnesium oxide (20%) and calcium powder (2%).
The effective content of each element is qualified in the following range, N: 5 to 7 percent; p205：38-42％；K:5-7％；Mg：15-19％。
The preparation method of the ammonium-potassium-magnesium phosphate environment-friendly slow-release fertilizer comprises the following steps: the raw materials are proportioned and mixed; the mixing is crushed in sequence, and the crushing fineness is 100-150 meshes; then granulating, drying after the granulation is qualified, wherein the drying condition is 150-; and (4) after drying, immediately cooling by an upper cooling machine to normal temperature, screening, bagging and warehousing.
Example 4
An environment-friendly slow-release fertilizer containing ammonium phosphate, potassium and magnesium phosphate is prepared from ammonium dihydrogen phosphate (60%), potassium dihydrogen phosphate (18%), magnesium oxide (20%) and calcium powder (2%).
The effective content of each element is qualified in the following range, N: 5 to 7 percent; p205：38-42％；K:5-7％；Mg：15-19％。
The preparation method of the ammonium-potassium-magnesium phosphate environment-friendly slow-release fertilizer comprises the following steps: the raw materials are proportioned and mixed; the mixing is crushed in sequence, and the crushing fineness is 100-150 meshes; then granulating, drying after the granulation is qualified, wherein the drying condition is 150-; and (3) after drying, immediately cooling in a cooling machine to reach normal temperature, continuously adding and mixing 2% of the bone meal and 2% of the hoof and horn powder, screening, bagging and warehousing.
Example 5
An environment-friendly slow-release fertilizer containing ammonium phosphate, potassium and magnesium phosphate is prepared from ammonium dihydrogen phosphate (60%), potassium dihydrogen phosphate (18%), magnesium oxide (20%) and calcium powder (2%).
The effective content of each element is qualified in the following range, N: 5 to 7 percent; p205：38-42％；K:5-7％；Mg：15-19％。
The preparation method of the ammonium-potassium-magnesium phosphate environment-friendly slow-release fertilizer comprises the following steps: the raw materials are proportioned and mixed; the mixing is crushed in sequence, and the crushing fineness is 100-150 meshes; then granulating, drying after the granulation is qualified, wherein the drying condition is 150-; and (3) after drying, immediately cooling the mixture in a cooling machine to reach normal temperature, continuously adding and mixing 5% of the bone meal and 8% of the hoof and horn powder, screening, bagging and warehousing.
Comparing the product obtained in the embodiment with a common slow release fertilizer without hoof and horn powder according to five groups, putting 200 seedlings of rape which just germinate to soil in a seedling room:
a group of 50 plants are not added with fertilizer, and only added with water;
two groups of 50 plants are added with common ammonium phosphate potassium magnesium fertilizers for green vegetables sold in the market;
three groups of 50 ammonium phosphate potassium magnesium environment-friendly slow release fertilizers without hoof and horn powder are added;
four groups of 50 ammonium phosphate potassium magnesium environment-friendly slow release fertilizers added with hoof and horn powder.
Recording the heights of the seedlings for one, three, five and seven days after germination, and picking out the seedlings to compare the thickness of the root system; the color of leaves and stems, the size, height, thickness and the like of plants are mainly observed, and the management in the week needs to be kept fair, the watering amount is the same, and the illumination is the same. The test time can be prolonged if the comparison is not obvious.
The result is that the average height of the obvious seedlings is higher from one group to four groups, the root system is more developed, the color of the leaves is not greatly different, and the stems are sequentially slightly vinegar. Therefore, the effect of the product of the invention is very obvious.
Claims (4)
1. An environment-friendly slow-release fertilizer containing ammonium phosphate, potassium and magnesium phosphate is characterized by being prepared from ammonium dihydrogen phosphate, potassium dihydrogen phosphate, magnesium oxide and calcium powder.
2. The environment-friendly slow release fertilizer containing ammonium, potassium and magnesium phosphate as claimed in claim 1, is characterized by comprising the following raw materials in percentage by mass: 57-61% of ammonium dihydrogen phosphate, 18-21% of potassium dihydrogen phosphate, 18-22% of magnesium oxide and 1-5% of calcium powder, wherein the total amount is 100%.
3. The environment-friendly slow release fertilizer containing ammonium, potassium and magnesium phosphate as claimed in claim 1, wherein the effective contents of the elements are as follows: 5 to 7 percent; p205：38-42％；K:5-7％；Mg：15-19％。
4. The preparation method of the environment-friendly slow release fertilizer containing ammonium, potassium and magnesium phosphate according to claim 1, characterized by comprising the following steps: the raw materials are proportioned and mixed; the mixing is crushed in sequence, and the crushing fineness is 100-150 meshes; then granulating, drying after the granulation is qualified, wherein the drying condition is 150-; and (4) after drying, immediately cooling by an upper cooling machine to normal temperature, screening, bagging and warehousing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010263903.4A CN111348953A (en) | 2020-04-07 | 2020-04-07 | Ammonium-potassium-magnesium phosphate environment-friendly slow-release fertilizer and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010263903.4A CN111348953A (en) | 2020-04-07 | 2020-04-07 | Ammonium-potassium-magnesium phosphate environment-friendly slow-release fertilizer and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111348953A true CN111348953A (en) | 2020-06-30 |
Family
ID=71191146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010263903.4A Pending CN111348953A (en) | 2020-04-07 | 2020-04-07 | Ammonium-potassium-magnesium phosphate environment-friendly slow-release fertilizer and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111348953A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2607368A (en) * | 2021-06-02 | 2022-12-07 | Caete Participacao E Administracao Eirelli | Disaggregable granulated calcium and/or magnesium and potassium fertilizer and method of obtaining thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1686965A (en) * | 2005-04-28 | 2005-10-26 | 王玉新 | Handy method for producing slow released fertilizer containing potassium ammonium magnesium phosphate |
| CN1772616A (en) * | 2005-09-16 | 2006-05-17 | 任建武 | Comprehensive method of utilizing magnesium smelting afterheat in producing magnesia and calcium carbonate |
| US20060196240A1 (en) * | 2003-08-06 | 2006-09-07 | Department Of Science & Technology (Dst) | Process for the manufacture of bio-release iron-manganese release fertilizer |
| CN1944356A (en) * | 2006-11-14 | 2007-04-11 | 常同忠 | Full element formula fertilizer and its preparing method and use |
| CN101081770A (en) * | 2006-06-02 | 2007-12-05 | 天津市汉沽区福祥肥料加工厂 | Preparation method of ammonium magnesium phosphate potash fertilizer used in planting production |
| CN107720713A (en) * | 2017-10-29 | 2018-02-23 | 贵阳开磷化肥有限公司 | A kind of method that phosphoric acid by wet process prepares ammonium dihydrogen phosphate co-production potassium dihydrogen phosphate |
-
2020
- 2020-04-07 CN CN202010263903.4A patent/CN111348953A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060196240A1 (en) * | 2003-08-06 | 2006-09-07 | Department Of Science & Technology (Dst) | Process for the manufacture of bio-release iron-manganese release fertilizer |
| CN1686965A (en) * | 2005-04-28 | 2005-10-26 | 王玉新 | Handy method for producing slow released fertilizer containing potassium ammonium magnesium phosphate |
| CN1772616A (en) * | 2005-09-16 | 2006-05-17 | 任建武 | Comprehensive method of utilizing magnesium smelting afterheat in producing magnesia and calcium carbonate |
| CN101081770A (en) * | 2006-06-02 | 2007-12-05 | 天津市汉沽区福祥肥料加工厂 | Preparation method of ammonium magnesium phosphate potash fertilizer used in planting production |
| CN1944356A (en) * | 2006-11-14 | 2007-04-11 | 常同忠 | Full element formula fertilizer and its preparing method and use |
| CN107720713A (en) * | 2017-10-29 | 2018-02-23 | 贵阳开磷化肥有限公司 | A kind of method that phosphoric acid by wet process prepares ammonium dihydrogen phosphate co-production potassium dihydrogen phosphate |
Non-Patent Citations (1)
| Title |
|---|
| 邵树策等: "《保护地辣椒种植难题破解100法》", 30 November 2007, 金盾出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2607368A (en) * | 2021-06-02 | 2022-12-07 | Caete Participacao E Administracao Eirelli | Disaggregable granulated calcium and/or magnesium and potassium fertilizer and method of obtaining thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2163919C1 (en) | Method of treating soil | |
| US9133066B2 (en) | Functional fertilizer composition including natural mineral ingredients and method of preparing the same | |
| CN110387238A (en) | A kind of acid soil improving agent and its methods for making and using same | |
| CN111348953A (en) | Ammonium-potassium-magnesium phosphate environment-friendly slow-release fertilizer and preparation method thereof | |
| CN113736468A (en) | Soil conditioner and preparation method thereof | |
| EP3408247B1 (en) | Method of producing a fertiliser composition and fertiliser composition produced thereby | |
| WO2021000665A1 (en) | Conditioning solution for increasing vitamin c content in plants, conditioners for fertilizer and soil, preparation therefor and application thereof | |
| CN111302865A (en) | Special fertilizer for rape and preparation method thereof | |
| CN111109029A (en) | High-calcium rice planting method | |
| CN106242927A (en) | A kind of wine-growing base manure and preparation method thereof | |
| Yadav et al. | Effect of foliar application of micronutrients on physical parameters of winter season guava (Psidium guajava L) cv. Lalit | |
| JPH0686344B2 (en) | Organic fertilizer | |
| CN113185362A (en) | Multi-effect calcium magnesium fertilizer particle and preparation method thereof | |
| CN111373992A (en) | Planting method of oil sunflower in saline-alkali soil | |
| CN105315110A (en) | Environment-friendly high carbon fertilizer capable of supplementing micronutrient elements | |
| CN112142510A (en) | Regulating solution for improving vitamin C content of crops and preparation method and application thereof | |
| CN111285731A (en) | Synergistic seaweed fertilizer with effervescence effect and preparation method thereof | |
| KR20070032163A (en) | Method for Cultivating High-Calcium Potato and High-Calcium Potato | |
| CN110627551A (en) | Preparation method of special mixed fertilizer for soybeans | |
| AU2021104231A4 (en) | Regulating solution, fertilizer and soil conditioner for increasing vitamin c content of plants as well as preparation and application thereof | |
| RU2258347C2 (en) | Soil fertilizing method | |
| CN108467323A (en) | A kind of organic water-soluble fertilizer and preparation method thereof | |
| KR20040003760A (en) | A manufacturing process of organic fertilizer with an additional humic acid | |
| KR100413588B1 (en) | Manufacturing method of fertilizer | |
| KR20240044889A (en) | Manufacturing method of eco-friendly organic waste fermented liquid fertilizer with added trace elements |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200630 |
|
| WD01 | Invention patent application deemed withdrawn after publication |