CN113321558A - Long-acting nitrogen fertilizer containing nitrogen-fixing microorganisms and preparation method thereof - Google Patents
Long-acting nitrogen fertilizer containing nitrogen-fixing microorganisms and preparation method thereof Download PDFInfo
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- CN113321558A CN113321558A CN202110775790.0A CN202110775790A CN113321558A CN 113321558 A CN113321558 A CN 113321558A CN 202110775790 A CN202110775790 A CN 202110775790A CN 113321558 A CN113321558 A CN 113321558A
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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
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B7/00—Fertilisers based essentially on alkali or ammonium orthophosphates
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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
- C05G3/40—Mixtures of one or more fertilisers with additives not having a specially fertilising activity for affecting fertiliser dosage or release rate; for affecting solubility
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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
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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
- C05G5/00—Fertilisers characterised by their form
- C05G5/10—Solid or semi-solid fertilisers, e.g. powders
- C05G5/12—Granules or flakes
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/40—Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse
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- Organic Chemistry (AREA)
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Abstract
The invention discloses a long-acting nitrogen fertilizer containing nitrogen-fixing microorganisms, which belongs to the technical field of fertilizers and comprises the following components in parts by weight: 30-35 parts of urea, 5-10 parts of potash fertilizer, 1-1.5 parts of plant extractant, 8-15 parts of humic acid, 1-3 parts of amino acid solution, 0.1-0.5 part of microbial agent, 3-8 parts of monopotassium phosphate, 0.5-1.5 parts of trace elements and 4-8 parts of additive. The nitrogen fertilizer has good slow-release nitrogen fixation capacity, can effectively improve the crop yield, and has high market competitiveness and popularization and application values.
Description
Technical Field
The invention belongs to the technical field of fertilizers, and particularly relates to a long-acting nitrogen fertilizer containing nitrogen-fixing microorganisms and a preparation method thereof.
Background
From the 60 s in the 20 th century, the fertilizer revolution is promoted in agriculture in China, and a large amount of chemical fertilizers are applied in agricultural production, so that the yield of grains in some barren lands is increased, the yield of the grains is guaranteed by applying the chemical fertilizers, and the problem of grain shortage at that time is effectively solved. However, the application amount of the fertilizer is too large, so that a large amount of soil organic matters and trace elements in a plurality of places in China are lost, and the whole soil ecosystem is damaged. In the past, only high yield is pursued, fertilizer waste is caused, and better research and improvement on the durability, the long-acting property and the environmental protection property of the fertilizer are not carried out.
The average nitrogen fertilizer utilization rate of grain crops in China is about 35 percent, and is 15 percent lower than the 50 percent nitrogen fertilizer utilization rate of developed countries. Therefore, technicians are required to continuously improve the utilization rate of the nitrogen fertilizer, and the conventional common mode is to manufacture slow-release fertilizer, wherein the slow-release fertilizer is to wrap a layer of film on the surface of granular nitrogen fertilizer, so that the soluble nitrogen of the slow-release fertilizer is gradually released for crops to absorb and utilize, and the nitrogen loss is reduced. But because the price is expensive, the application and popularization have great obstacles.
Disclosure of Invention
The invention aims to provide a long-acting nitrogen fertilizer containing nitrogen-fixing microorganisms and a preparation method thereof, so as to solve the defects in the prior art.
The technical scheme adopted by the invention is as follows:
a long-acting nitrogen fertilizer containing nitrogen-fixing microorganisms comprises the following components in parts by weight:
30-35 parts of urea, 5-10 parts of potash fertilizer, 1-1.5 parts of plant extractant, 8-15 parts of humic acid, 1-3 parts of amino acid solution, 0.1-0.5 part of microbial agent, 3-8 parts of monopotassium phosphate, 0.5-1.5 parts of trace elements and 4-8 parts of additive.
Preferably, the composition comprises the following components in parts by weight:
33 parts of urea, 8 parts of potash fertilizer, 1.3 parts of plant extractant, 12 parts of humic acid, 2 parts of amino acid solution, 0.3 part of microbial agent, 6 parts of monopotassium phosphate, 1 part of trace elements and 6 parts of additive.
Further, the preparation method of the plant extractant comprises the following steps:
1) mixing and crushing the melia azedarach leaves, the mint leaves, the reed rhizome and the astragalus membranaceus, and sieving by a 100-mesh sieve to obtain a mixture for later use;
2) blending the mixture obtained in the step 1) with water, wherein the weight ratio of the mixture to the water is 1: 5-7, heating, boiling and boiling for 1-2 hours, filtering, and finally concentrating the filtrate to 10-20% of the original volume.
Further, the weight ratio of the chinaberry leaves, the mint leaves, the reed rhizome and the astragalus membranaceus in the step 1) is 5-8: 1-3: 2-5: 3 to 6.
Furthermore, the amino acid liquid contains 2-4% by mass of glutamic acid, 3-5% by mass of alanine and 1-1.5% by mass of phenylalanine.
Furthermore, the microbial agent contains azotobacter chroococcum, azotobacter chroococcum and bacillus megaterium.
Further, the trace elements are a mixture of zinc sulfate, magnesium sulfate, ferrous sulfate, borax and manganese sulfate in a weight ratio of 3:1:2.5:2: 4.
Further, the preparation method of the additive comprises the following steps:
a. firstly, placing kaolin into a calcining furnace, controlling the temperature to be 900-950 ℃, calcining for 1-2 hours, and then taking out;
b. and c, mixing the kaolin treated in the step a with the water-absorbent resin and the nano stone needle powder, uniformly stirring and taking out the mixture to obtain the kaolin-modified stone needle.
Further, the kaolin, the water-absorbent resin and the nano stone needle powder in the step b are mixed together at a corresponding weight ratio of 8-10: 1-3: 0.5 to 1.5.
A preparation method of a long-acting nitrogen fertilizer containing nitrogen-fixing microorganisms specifically comprises the following steps:
(1) mixing plant extractant, microbial agent, trace elements and additive together, and stirring uniformly to obtain premix for later use;
(2) and (2) mixing the premix obtained in the step (1) with urea, a potash fertilizer, humic acid, amino acid liquid and monopotassium phosphate, and granulating in a conventional mode.
The invention has the following beneficial effects:
the application provides a long-acting nitrogen fertilizer containing nitrogen-fixing microorganisms, the nitrogen fertilizer is not prepared in a traditional surface film covering mode, the production cost is reduced, plant extractant components are added to raw material components, urea can be slowly converted into ammonium nitrogen through the plant extractant components, the slow release effect of the nitrogen fertilizer is achieved, the soil environment can be purified, the further propagation of a microbial agent is facilitated, and the nitrogen-fixing slow release effect is better achieved; the added additive can provide better survival carrier and nutrition for microorganisms, simultaneously has water-retaining property which can promote the formation of micro-areas which are beneficial to the growth and the propagation of the microorganisms around the root system, and can well adsorb and fix and slowly release nutrient substances such as nitrogen fertilizer, and finally, under the combined action of all raw material components, the nitrogen fertilizer has good slow-release nitrogen fixation capacity, can effectively improve the crop yield, and has market competitiveness and popularization and application value.
Detailed Description
The following will clearly and completely describe the technical solutions of the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
A long-acting nitrogen fertilizer containing nitrogen-fixing microorganisms comprises the following components in parts by weight:
30 parts of urea, 5 parts of potash fertilizer, 1 part of plant extractant, 8 parts of humic acid, 1 part of amino acid solution, 0.1 part of microbial agent, 3 parts of monopotassium phosphate, 0.5 part of trace elements and 4 parts of additive.
The preparation method of the plant extractant comprises the following steps:
1) mixing and crushing the melia azedarach leaves, the mint leaves, the reed rhizome and the astragalus membranaceus, and sieving by a 100-mesh sieve to obtain a mixture for later use;
2) blending the mixture obtained in the step 1) with water, wherein the weight ratio of the mixture to the water is 1: and 5, heating, boiling and boiling for 1 hour, filtering, and finally concentrating the filtrate to 10% of the original volume.
When the chinaberry leaves, the mint leaves, the reed rhizome and the astragalus root in the step 1) are mixed together, the corresponding weight ratio is 5: 1: 2: 3.
the amino acid solution contains 2% by mass of glutamic acid, 3% by mass of coenzyme and 1% by mass of phenylalanine.
The microbial agent contains azotobacter chroococcum, azotobacter chroococcum and bacillus megaterium.
The trace elements are a mixture of zinc sulfate, magnesium sulfate, ferrous sulfate, borax and manganese sulfate in a weight ratio of 3:1:2.5:2: 4.
The preparation method of the additive comprises the following steps:
a. firstly, putting kaolin into a calcining furnace, controlling the temperature to be 900 ℃, calcining for 1h, and taking out the kaolin;
b. mixing the kaolin treated in the step a, water-absorbent resin and nano stone needle powder together, uniformly stirring and taking out to obtain the kaolin-modified stone needle; when the kaolin, the water-absorbent resin and the nano stone needle powder are mixed together, the corresponding weight ratio is 8: 1: 0.5.
a preparation method of a long-acting nitrogen fertilizer containing nitrogen-fixing microorganisms specifically comprises the following steps:
(1) mixing plant extractant, microbial agent, trace elements and additive together, and stirring uniformly to obtain premix for later use;
(2) and (2) mixing the premix obtained in the step (1) with urea, a potash fertilizer, humic acid, amino acid liquid and monopotassium phosphate, and granulating in a conventional mode.
Example 2
A long-acting nitrogen fertilizer containing nitrogen-fixing microorganisms comprises the following components in parts by weight:
33 parts of urea, 8 parts of potash fertilizer, 1.3 parts of plant extractant, 12 parts of humic acid, 2 parts of amino acid solution, 0.3 part of microbial agent, 6 parts of monopotassium phosphate, 1 part of trace elements and 6 parts of additive.
The preparation method of the plant extractant comprises the following steps:
1) mixing and crushing the melia azedarach leaves, the mint leaves, the reed rhizome and the astragalus membranaceus, and sieving by a 100-mesh sieve to obtain a mixture for later use;
2) blending the mixture obtained in the step 1) with water, wherein the weight ratio of the mixture to the water is 1: and 6, heating, boiling and boiling for 1.5h, filtering, and finally concentrating the filtrate to 15% of the original volume.
When the chinaberry leaves, the mint leaves, the reed rhizome and the astragalus root in the step 1) are mixed together, the corresponding weight ratio is 7: 2: 4: 5.
the amino acid solution contains 3% by mass of glutamic acid, 4% by mass of proline and 1.2% by mass of phenylalanine.
The microbial agent contains azotobacter chroococcum, azotobacter chroococcum and bacillus megaterium.
The trace elements are a mixture of zinc sulfate, magnesium sulfate, ferrous sulfate, borax and manganese sulfate in a weight ratio of 3:1:2.5:2: 4.
The preparation method of the additive comprises the following steps:
a. firstly, putting kaolin into a calcining furnace, controlling the temperature to be 930 ℃, calcining for 1.5h, and taking out;
b. mixing the kaolin treated in the step a, water-absorbent resin and nano stone needle powder together, uniformly stirring and taking out to obtain the kaolin-modified stone needle; when the kaolin, the water-absorbent resin and the nano stone needle powder are mixed together, the corresponding weight ratio is 9: 2: 1.
a preparation method of a long-acting nitrogen fertilizer containing nitrogen-fixing microorganisms specifically comprises the following steps:
(1) mixing plant extractant, microbial agent, trace elements and additive together, and stirring uniformly to obtain premix for later use;
(2) and (2) mixing the premix obtained in the step (1) with urea, a potash fertilizer, humic acid, amino acid liquid and monopotassium phosphate, and granulating in a conventional mode.
Example 3
A long-acting nitrogen fertilizer containing nitrogen-fixing microorganisms comprises the following components in parts by weight:
35 parts of urea, 10 parts of potash fertilizer, 1.5 parts of plant extractant, 15 parts of humic acid, 3 parts of amino acid solution, 0.5 part of microbial agent, 8 parts of monopotassium phosphate, 1.5 parts of trace elements and 8 parts of additive.
The preparation method of the plant extractant comprises the following steps:
1) mixing and crushing the melia azedarach leaves, the mint leaves, the reed rhizome and the astragalus membranaceus, and sieving by a 100-mesh sieve to obtain a mixture for later use;
2) blending the mixture obtained in the step 1) with water, wherein the weight ratio of the mixture to the water is 1: 7, heating, boiling and boiling for 2 hours, filtering, and finally concentrating the filtrate to 20% of the original volume.
When the chinaberry leaves, the mint leaves, the reed rhizome and the astragalus root in the step 1) are mixed together, the corresponding weight ratio is 8: 3: 5: 6.
the amino acid solution contains 4% by mass of glutamic acid, 5% by mass of proline and 1.5% by mass of phenylalanine.
The microbial agent contains azotobacter chroococcum, azotobacter chroococcum and bacillus megaterium.
The trace elements are a mixture of zinc sulfate, magnesium sulfate, ferrous sulfate, borax and manganese sulfate in a weight ratio of 3:1:2.5:2: 4.
The preparation method of the additive comprises the following steps:
a. firstly, putting kaolin into a calcining furnace, controlling the temperature to be 950 ℃, calcining for 2 hours, and then taking out the kaolin;
b. mixing the kaolin treated in the step a, water-absorbent resin and nano stone needle powder together, uniformly stirring and taking out to obtain the kaolin-modified stone needle; when the kaolin, the water-absorbent resin and the nano stone needle powder are mixed together, the corresponding weight ratio is 10: 3: 1.5.
a preparation method of a long-acting nitrogen fertilizer containing nitrogen-fixing microorganisms specifically comprises the following steps:
(1) mixing plant extractant, microbial agent, trace elements and additive together, and stirring uniformly to obtain premix for later use;
(2) and (2) mixing the premix obtained in the step (1) with urea, a potash fertilizer, humic acid, amino acid liquid and monopotassium phosphate, and granulating in a conventional mode.
Comparative example 1
This comparative example 1 is different from example 2 only in that the plant extractant component is omitted, except that the process steps are the same.
Comparative example 2
This comparative example 2 is different from example 2 only in that the additive components are omitted, except that the process steps are the same.
Comparative example 3
This comparative example 3 is compared to example 2 with the only difference that the plant extractant and additive components are omitted except that the process steps are otherwise identical.
In order to compare the effects of the invention, the performance experiment, specifically the fertilizer efficiency experiment of the rice potting, was carried out on the nitrogen fertilizers prepared in the above example 2, comparative example 1, comparative example 2 and comparative example 3:
in the test, plastic pots with the height of 40cm and the diameter of 30cm are used for carrying rice, 5 pots are arranged in total, and each pot is filled with 10kg of field soil. 6g of each of phosphate fertilizer and potash fertilizer is weighed and evenly mixed in each pot of soil, 6g of each of example 2, comparative example 1, comparative example 2, comparative example 3 and common large-particle urea is weighed and respectively applied to the soil with the depth of 7cm and 16.5cm, transplanting is carried out according to the number of three holes in each pot, watering is carried out after the seedlings are fixed, and regular observation is carried out.
And (4) observing results: in the tillering stage, the growth of rice in each pot is not greatly different, after the tillering stage, the growth vigor of the rice treated by the common large-grain urea and the rice treated by the group treated by the comparative example 3 is obviously poorer, the reason is that the urea is released too fast to meet the growth of the rice in the later stage,
the growth conditions of the rice in the treatment groups of the example 2, the comparative example 1 and the comparative example 2 are basically similar in the elongation stage, the booting stage and the early stage of the milk stage, but the growth conditions of the rice in the treatment group of the example 2 are obviously superior to those of the treatment groups of the comparative example 1 and the comparative example 2 in the late stage and the full stage of the milk stage of the rice, which shows that the slow-release nitrogen fixation effect of the example 2 is obviously superior to those of the latter two, and finally, the yield of the rice in the treatment group of the example 2 is about 10% higher than that of the rice in the comparative example 1 and the rice in the comparative example 2 and about 25% higher than that of the common large-grain urea; it can be seen that the nitrogen fertilizer has remarkable effects of improving the yield and the quality of crops, and has great market competitiveness.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention, and the present invention is not limited to the illustrated embodiments, and all the modifications and equivalents of the embodiments may be made without departing from the spirit of the present invention.
Claims (10)
1. A long-acting nitrogen fertilizer containing nitrogen-fixing microorganisms is characterized by comprising the following components in parts by weight:
30-35 parts of urea, 5-10 parts of potash fertilizer, 1-1.5 parts of plant extractant, 8-15 parts of humic acid, 1-3 parts of amino acid solution, 0.1-0.5 part of microbial agent, 3-8 parts of monopotassium phosphate, 0.5-1.5 parts of trace elements and 4-8 parts of additive.
2. The long-acting nitrogen fertilizer containing nitrogen-fixing microorganisms as claimed in claim 1, which is characterized by comprising the following components in parts by weight:
33 parts of urea, 8 parts of potash fertilizer, 1.3 parts of plant extractant, 12 parts of humic acid, 2 parts of amino acid solution, 0.3 part of microbial agent, 6 parts of monopotassium phosphate, 1 part of trace elements and 6 parts of additive.
3. The long-acting nitrogen fertilizer containing nitrogen-fixing microorganisms as claimed in claim 1 or 2, wherein the preparation method of the plant extractant comprises the following steps:
1) mixing and crushing the melia azedarach leaves, the mint leaves, the reed rhizome and the astragalus membranaceus, and sieving by a 100-mesh sieve to obtain a mixture for later use;
2) blending the mixture obtained in the step 1) with water, wherein the weight ratio of the mixture to the water is 1: 5-7, heating, boiling and boiling for 1-2 hours, filtering, and finally concentrating the filtrate to 10-20% of the original volume.
4. The long-acting nitrogen fertilizer containing nitrogen-fixing microorganisms as claimed in claim 3, wherein the weight ratio of the mixture of the melia azedarach leaves, the mint leaves, the reed rhizome and the astragalus membranaceus in the step 1) is 5-8: 1-3: 2-5: 3 to 6.
5. The long-acting nitrogen fertilizer containing nitrogen-fixing microorganisms as claimed in claim 1 or 2, wherein the mass fraction of glutamic acid, the mass fraction of alanine and the mass fraction of phenylalanine in the amino acid solution are respectively 2-4%, 3-5% and 1-1.5%.
6. The long-acting nitrogen fertilizer containing nitrogen-fixing microorganisms as claimed in claim 1 or 2, wherein the microbial agent contains azotobacter chroococcum, azotobacter vinelandii and bacillus megaterium.
7. The long-acting nitrogen fertilizer containing nitrogen-fixing microorganisms as claimed in claim 1 or 2, wherein the trace elements are a mixture of zinc sulfate, magnesium sulfate, ferrous sulfate, borax and manganese sulfate in a weight ratio of 3:1:2.5:2: 4.
8. The long-acting nitrogen fertilizer containing nitrogen-fixing microorganisms as claimed in claim 1 or 2, characterized in that the preparation method of the additive comprises the following steps:
a. firstly, placing kaolin into a calcining furnace, controlling the temperature to be 900-950 ℃, calcining for 1-2 hours, and then taking out;
b. and c, mixing the kaolin treated in the step a with the water-absorbent resin and the nano stone needle powder, uniformly stirring and taking out the mixture to obtain the kaolin-modified stone needle.
9. The long-acting nitrogen fertilizer containing nitrogen-fixing microorganisms as claimed in claim 8, wherein the kaolin, the water-absorbing resin and the nano stone needle powder in the step b are mixed together at a weight ratio of 8-10: 1-3: 0.5 to 1.5.
10. A preparation method of a long-acting nitrogen fertilizer containing nitrogen-fixing microorganisms is characterized by comprising the following steps:
(1) mixing plant extractant, microbial agent, trace elements and additive together, and stirring uniformly to obtain premix for later use;
(2) and (2) mixing the premix obtained in the step (1) with urea, a potash fertilizer, humic acid, amino acid liquid and monopotassium phosphate, and granulating in a conventional mode.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110775790.0A CN113321558A (en) | 2021-07-09 | 2021-07-09 | Long-acting nitrogen fertilizer containing nitrogen-fixing microorganisms and preparation method thereof |
| PCT/CN2021/141822 WO2023279678A1 (en) | 2021-07-09 | 2021-12-28 | Long-acting nitrogen fertilizer containing nitrogen-fixing microorganisms and preparation method therefor |
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| CN202110775790.0A CN113321558A (en) | 2021-07-09 | 2021-07-09 | Long-acting nitrogen fertilizer containing nitrogen-fixing microorganisms and preparation method thereof |
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| WO (1) | WO2023279678A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023279678A1 (en) * | 2021-07-09 | 2023-01-12 | 广西壮族自治区农业科学院 | Long-acting nitrogen fertilizer containing nitrogen-fixing microorganisms and preparation method therefor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106116985A (en) * | 2016-06-24 | 2016-11-16 | 烟台力康生物有限公司 | A kind of long-acting nitrogen fertilizer containing nitrogen-fixing microorganism and preparation method thereof |
| CN106966834A (en) * | 2017-04-13 | 2017-07-21 | 河南骏化发展股份有限公司 | A kind of complex microorganism granular fertilizer and preparation method thereof |
| CN110698296A (en) * | 2019-11-14 | 2020-01-17 | 安徽省宗正农业科技开发有限公司 | Carbon-based fertilizer for improving soil quality |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108863540A (en) * | 2018-07-19 | 2018-11-23 | 华中农业大学 | Multi-functional clear liquid type liquid fertilizer of high nitrogen containing amino acid and preparation method thereof |
| CN113321558A (en) * | 2021-07-09 | 2021-08-31 | 广西壮族自治区农业科学院 | Long-acting nitrogen fertilizer containing nitrogen-fixing microorganisms and preparation method thereof |
-
2021
- 2021-07-09 CN CN202110775790.0A patent/CN113321558A/en active Pending
- 2021-12-28 WO PCT/CN2021/141822 patent/WO2023279678A1/en unknown
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106116985A (en) * | 2016-06-24 | 2016-11-16 | 烟台力康生物有限公司 | A kind of long-acting nitrogen fertilizer containing nitrogen-fixing microorganism and preparation method thereof |
| CN106966834A (en) * | 2017-04-13 | 2017-07-21 | 河南骏化发展股份有限公司 | A kind of complex microorganism granular fertilizer and preparation method thereof |
| CN110698296A (en) * | 2019-11-14 | 2020-01-17 | 安徽省宗正农业科技开发有限公司 | Carbon-based fertilizer for improving soil quality |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023279678A1 (en) * | 2021-07-09 | 2023-01-12 | 广西壮族自治区农业科学院 | Long-acting nitrogen fertilizer containing nitrogen-fixing microorganisms and preparation method therefor |
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Application publication date: 20210831 |