CN111393231A - Nitro fertilizer containing rare earth nitrate and preparation method thereof - Google Patents
Nitro fertilizer containing rare earth nitrate and preparation method thereof Download PDFInfo
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- CN111393231A CN111393231A CN202010046824.8A CN202010046824A CN111393231A CN 111393231 A CN111393231 A CN 111393231A CN 202010046824 A CN202010046824 A CN 202010046824A CN 111393231 A CN111393231 A CN 111393231A
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/20—Reduction of greenhouse gas [GHG] emissions in agriculture, e.g. CO2
- Y02P60/21—Dinitrogen oxide [N2O], e.g. using aquaponics, hydroponics or efficiency measures
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Abstract
The invention is applicable to the technical field of nitrofertilizers and discloses a nitrofertilizer containing rare earth nitrate and a preparation method thereof. The nitro fertilizer containing rare earth nitrate comprises rare earth nitrate, a slow release medium, a medium trace element fertilizer raw material, a macro-element fertilizer raw material and other auxiliaries. The preparation method is used for preparing the nitro-fertilizer and comprises the following steps: preparing rare earth nitrate, a slow release medium, a medium-trace element fertilizer raw material, a macro-element fertilizer raw material and other auxiliaries, and granulating to obtain a fertilizer finished product. According to the nitro-fertilizer containing the rare earth nitrate and the preparation method thereof, the rare earth nitrate can enhance the stress resistance of crops and improve the rate of emergence, the slow release medium and the rare earth nitrate ensure safe fertilizer application, the strength of fertilizer particles is increased, the yield and the quality of crops are improved, and the purposes of quality improvement and efficiency improvement are achieved.
Description
Technical Field
The invention belongs to the technical field of nitro fertilizers, and particularly relates to a nitro fertilizer containing rare earth nitrate and a preparation method thereof.
Background
In recent years, farmers apply nitrogen, phosphorus and potassium in a biased way during planting, neglect organic fertilizers and medium and trace elements, cause soil environment deterioration and lack of organic matters and medium and trace elements. Under the general condition, more nitrogen fertilizer loss, the fertilizer efficiency duration is short, the phosphorus fertilizer is only 10-20% of utilization ratio in season, it is slow to remove, easily fixed, how to prolong the fertilizer efficiency of nitrogen, improve the utilization ratio in season of phosphorus fertilizer, improve soil water retention gas permeability, improve the fertilizer utilization ratio, guarantee fertilizer application safety, improve crop output and quality, it becomes the problem that awaits solution to strengthen crop resistance, and along with the development of modern agriculture, it will be a trend to adapt to the fertilizer integration, the fertilizer that unmanned aerial vehicle broadcast.
Disclosure of Invention
The invention aims to solve at least one of the technical problems and provides a nitro-fertilizer containing rare earth nitrate and a preparation method thereof, which ensure the safe application of the fertilizer, increase the strength of fertilizer particles, improve the yield and quality of crops and fulfill the aims of quality improvement and efficiency improvement.
The technical scheme of the invention is as follows: a nitro-fertilizer containing rare earth nitrate comprises rare earth nitrate, a slow release medium, a medium-trace element fertilizer raw material, a macro-element fertilizer raw material and other auxiliaries.
Optionally, in the nitro-group fertilizer containing rare earth nitrate, the mass ratio of the rare earth nitrate is 0.1-1%, the mass ratio of the slow-release medium is 1-10%, the mass ratio of the medium-trace element fertilizer raw material is 1-10%, the mass ratio of the macro-element fertilizer raw material is 80-98%, and the mass ratio of the other auxiliary agents is 1-10%.
Optionally, the rare earth nitrate comprises rare earth oxide, and the total content of the rare earth oxide is more than or equal to 40%.
Optionally, the granularity of the rare earth nitrate is 30-150 meshes, and the water content of the rare earth nitrate is less than or equal to 2%.
Optionally, the slow release medium comprises at least one of nitrification inhibitor, bentonite, zeolite, diatomaceous earth, sepiolite.
Optionally, the medium trace element fertilizer raw material comprises at least one of borax, boric acid, zinc sulfate, manganese sulfate, copper sulfate, ferrous sulfate and ammonium molybdate.
Optionally, the macroelement fertilizer raw material comprises at least one of phosphorus nitrate, ammonium nitrate phosphorus, monoammonium phosphate, diammonium phosphate, ammonium polyphosphate, potassium white, potassium sulfate, potassium chloride.
Optionally, the other auxiliary agents comprise at least one of a fertilizer filler, anti-caking oil and anti-caking powder.
Optionally, the fertilizer filler comprises at least one of montmorillonite, kaolin, bentonite, and the like.
The invention also provides a preparation method of the nitro-fertilizer containing the rare earth nitrate, which is used for preparing the nitro-fertilizer containing the rare earth nitrate, preparing the rare earth nitrate, a slow release medium, a medium-trace element fertilizer raw material, a large amount of element fertilizer raw material and other auxiliaries, and granulating to obtain a fertilizer finished product.
According to the nitro-fertilizer containing the rare earth nitrate and the preparation method thereof, the rare earth nitrate can enhance the stress resistance of crops and improve the rate of emergence, the slow release medium and the rare earth nitrate ensure the safe application of the fertilizer, the strength of fertilizer particles is increased, the yield and the quality of the crops are improved, and the purposes of quality improvement and efficiency improvement are achieved; the rare earth nitrate in the fertilizer can improve the emergence rate of crops, obviously increase the root weight and improve the content of soluble sugar in plants; the physical and chemical properties of the soil can be improved, the water retention of the soil is enhanced, the drought resistance, cold resistance and disease resistance of crops are improved, and the photosynthesis of the crops is improved; the fertilizer is simple in manufacturing steps, can improve the strength of the fertilizer, and can be used for modern centralized fertilization such as agricultural machinery fertilization and unmanned aerial vehicle broadcast fertilization.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The various features and embodiments described in the embodiments may be combined in any suitable manner, for example, different embodiments may be formed by combining different features/embodiments, and various combinations of features/embodiments are not separately described in order to avoid unnecessary repetition.
The nitro-fertilizer containing rare earth nitrate provided by the embodiment of the invention comprises rare earth nitrate, a slow release medium, a medium-trace element fertilizer raw material, a macro-element fertilizer raw material and other auxiliaries. The raw materials of the macroelement fertilizer at least comprise nitrogen and phosphorus, and the slow release medium in the fertilizer can control the slow release of the macroelement in the fertilizer, particularly the slow release of the nitrogen, so that the fertilizer effect can be prolonged, and the effects of decrement and synergy can be achieved; the rare earth nitrate can improve the emergence rate of crops, obviously increase the root weight, improve the content of soluble sugar in plants, and be used together with a slow-release medium, so that the physical and chemical properties of soil can be improved, the water retention property of the soil can be enhanced, the drought resistance, cold resistance and disease resistance of the crops can be improved, the photosynthesis of the crops can be improved, the problem that the fertilizer efficiency time of the existing fertilizer nitrogen fertilizer is short is solved, the problems that nitrogen in the existing fertilizer is quickly dissolved and is easy to volatilize in dry land in a scattering way can be solved, meanwhile, the problem that the fertilizer efficiency is low in the season of the phosphate fertilizer can be solved, the application safety of the fertilizer is ensured, the strength of fertilizer particles is increased, the yield and the quality.
In the specific application, the rare earth nitrate is an inorganic mixture consisting of two or more nitrates in light rare earth elements, and the light rare earth elements can be lanthanum, cerium, praseodymium and neodymium. The light rare earth elements in the rare earth nitrate can improve the chlorophyll content of plants, enhance photosynthesis, promote root development and increase nutrient absorption of roots, and the light rare earth elements can also promote seed germination, improve seed germination rate and promote seedling growth, and also have the capabilities of enhancing disease resistance, cold resistance and drought resistance of crops, and the light rare earth elements with proper concentration can promote nutrient absorption, transformation and utilization of the plants.
Specifically, in the nitro-group fertilizer containing rare earth nitrate, the mass ratio of the rare earth nitrate is 0.1-1%, the mass ratio of the slow-release medium is 1-10%, the mass ratio of the medium-trace element fertilizer raw materials is 1-10%, the mass ratio of the macro-element fertilizer raw materials is 80-98%, and the mass ratio of the other auxiliary agents is 1-10%. As an optional specific example, in the rare earth nitrate-containing nitro-fertilizer, the mass ratio of the rare earth nitrate is 0.2%, the mass ratio of the slow-release medium is 5%, the mass ratio of the medium-trace element fertilizer raw material is 4.8%, the mass ratio of the macro-element fertilizer raw material is 85%, and the mass ratio of the other auxiliary agents is 5%.
As an optional specific example, in the rare earth nitrate-containing nitro-fertilizer, the mass ratio of the rare earth nitrate is 0.5%, the mass ratio of the slow-release medium is 8%, the mass ratio of the medium-trace element fertilizer raw material is 5.5%, the mass ratio of the macro-element fertilizer raw material is 81%, and the mass ratio of the other additives is 6%.
As an optional specific example, in the rare earth nitrate-containing nitro-fertilizer, the mass ratio of the rare earth nitrate is 1%, the mass ratio of the slow-release medium is 7%, the mass ratio of the medium-trace element fertilizer raw material is 3%, the mass ratio of the macro-element fertilizer raw material is 88%, and the mass ratio of the other auxiliary agents is 1%. Experiments show that: the corn adopts the nitro-fertilizer containing the rare earth nitrate provided by the specific embodiment, the seedling emergence and the jointing are 1-2 days earlier than the contrast, the precocity is 3-5 days, the seeds are full, and the yield is increased by 14%; by adopting the nitro-fertilizer containing the rare earth nitrate, the soybean seedlings emerge 1 day ahead of time, the number of the pods of a single plant is increased by 6, the number of the 3 pods is increased, and the yield is increased by 5-8%. By hole application of the nitro-fertilizer containing the rare earth nitrate, the Vc content, the total sugar content and the sugar-acid ratio of the apple and orange fruits are improved, the coloring and the precocity of the fruits are promoted, the respiratory intensity in the storage process is inhibited, and the rotting rate is reduced. Specifically, the rare earth nitrate comprises rare earth oxide, and the total content of the rare earth nitrate in the rare earth nitrate is more than or equal to 40 percent (by mass), and optionally the total content of the rare earth nitrate in the rare earth nitrate is more than or equal to 60 percent (by mass).
Specifically, the granularity of the rare earth nitrate is 30-150 meshes, and the water content of the rare earth nitrate is less than or equal to 2%.
Specifically, the slow release medium comprises at least one or at least two or all of nitrification inhibitor, bentonite, zeolite, diatomite and sepiolite.
Specifically, the medium trace element fertilizer raw material comprises at least one or at least two or all of borax, boric acid, zinc sulfate, manganese sulfate, copper sulfate, ferrous sulfate and ammonium molybdate.
Specifically, the macroelement fertilizer raw material comprises at least one or at least two or all of phosphorus nitrate, ammonium nitrate phosphorus, monoammonium phosphate, diammonium phosphate, ammonium polyphosphate, potassium oxide, potassium sulfate and potassium chloride.
Specifically, the other auxiliary agents comprise at least one or at least two or all of a fertilizer filling agent, anti-hardening oil and anti-hardening powder.
Specifically, the fertilizer filler includes at least one or at least two or all of montmorillonite, kaolin, bentonite, and the like.
The application method of the nitro-fertilizer containing the rare earth nitrate can be widely applied to various crops such as grains, oil, sugar, vegetables, fruits, flowers, tobacco, tea leaves, rubber and the like, and can also be used for planting pasture and forest trees, the application method mainly adopts broadcast application, is mainly used in seedling stage or flowering stage, the broadcast application frequency is generally 1 to 2 times, and the application method can also be used for seed dressing, hole application and the like.
The invention also provides a preparation method of the nitro-fertilizer containing the rare earth nitrate, which is used for preparing the nitro-fertilizer containing the rare earth nitrate and comprises the following steps: and (3) carrying out high-tower granulation or disc granulation or drum fluidized bed granulation on the rare earth nitrate, the slow release medium, the medium-trace element fertilizer raw material, the macro-element fertilizer raw material and other auxiliaries to obtain a fertilizer finished product.
And (3) obtaining raw materials according to the nitro fertilizer containing the rare earth nitrate, spraying the raw materials except the anti-hardening oil and the anti-hardening powder with the anti-hardening oil and the anti-hardening powder to obtain a fertilizer finished product.
According to the nitro-fertilizer containing the rare earth nitrate and the preparation method thereof provided by the embodiment of the invention, the rare earth nitrate can enhance the stress resistance of crops and improve the rate of emergence, the slow release medium and the rare earth nitrate ensure the safe application of the fertilizer, the strength of fertilizer particles is increased, the yield and the quality of the crops are improved, and the purposes of quality improvement and efficiency improvement are achieved; the rare earth nitrate in the fertilizer can improve the emergence rate of crops, obviously increase the root weight and improve the content of soluble sugar in plants; the physical and chemical properties of the soil can be improved, the water retention of the soil is enhanced, the drought resistance, cold resistance and disease resistance of crops are improved, and the photosynthesis of the crops is improved; the fertilizer is simple in manufacturing steps, can improve the strength of the fertilizer, and can be used for modern centralized fertilization such as agricultural machinery fertilization and unmanned aerial vehicle broadcasting fertilization.
The fertilizer efficiency test is compared as follows:
example 1
In the nitro-fertilizer containing rare earth nitrate provided by this embodiment, in the nitro-fertilizer containing rare earth nitrate, the mass ratio of rare earth nitrate is 0.2%, the mass ratio of the slow-release medium is 8%, the mass ratio of the medium trace element fertilizer raw material is 5.8%, the mass ratio of the macro-element fertilizer raw material is 85%, and the mass ratio of the other auxiliaries is 1%.
Example 2
In the nitro-fertilizer containing rare earth nitrate provided by this embodiment, in the nitro-fertilizer containing rare earth nitrate, the mass ratio of rare earth nitrate is 0.4%, the mass ratio of the slow-release medium is 6%, the mass ratio of the medium trace element fertilizer raw material is 4.6%, the mass ratio of the macro-element fertilizer raw material is 87%, and the mass ratio of the other auxiliaries is 2%.
Comparative example 1
In the nitro-fertilizer containing the rare earth nitrate, the mass ratio of the rare earth nitrate is 0.2%, the mass ratio of the slow-release medium is 0%, the mass ratio of the medium-trace element fertilizer raw material is 5.8%, the mass ratio of the macro-element fertilizer raw material is 85%, and the mass ratio of other auxiliary agents is 9%.
Comparative example 2
In the nitro-fertilizer containing the rare earth nitrate, the mass ratio of the rare earth nitrate is 0.4%, the mass ratio of the slow-release medium is 0%, the mass ratio of the medium-trace element fertilizer raw material is 4.6%, the mass ratio of the macro-element fertilizer raw material is 87%, and the mass ratio of other auxiliary agents is 8%.
The nitro fertilizers prepared in the above examples 1 and 2 and comparative examples 1 and 2 were subjected to a cabbage mustard pot fertilization test to obtain test results as shown in the following table 1: the third leaf, SPAD (visual reflection of nitrogen fertilizer utilization effect), yield and soluble sugar.
TABLE 1 Fertilizer efficiency test results of nitro fertilizer cabbage mustard potted plants of examples and comparative examples
It can be seen that, after 15 days, the SPAD of the cabbage mustard is higher than that of the nitro-fertilizer containing the rare earth nitrate provided in the examples 1 and 2, and the yield and the soluble sugar are obviously higher than that of the nitro-fertilizer containing the rare earth nitrate in the comparative examples 1 and 2.
The following example 1 and comparative examples 1 to 4 are intended to compare the rare earth nitrate-containing nitrofertilizers provided by the present invention with commercial nitrofertilizers.
Example 1
In the nitro-fertilizer containing rare earth nitrate, the mass ratio of the rare earth nitrate is 1%, the mass ratio of the slow-release medium is 3%, the mass ratio of the medium-trace element fertilizer raw materials is 5%, the mass ratio of the macro-element fertilizer raw materials is 90%, and the mass ratio of other additives is 1%.
Comparative example 1
Other components of the nitro-fertilizer in the market are as follows: the mass ratio of the macroelement fertilizer raw materials is 90%, and the mass ratio of the other auxiliary agents is 10%.
Comparative example 2
Other components of the nitro-fertilizer in the market are as follows: the mass ratio of the medium trace element fertilizer raw materials is 5%, the mass ratio of the large amount of element fertilizer raw materials is 90%, and the mass ratio of other auxiliary agents is 5%.
Comparative example 3
Other components of the nitro-fertilizer in the market are as follows: the mass ratio of the slow release medium is 3%, the mass ratio of the medium-trace element fertilizer raw materials is 5%, the mass ratio of the macro-element fertilizer raw materials is 90%, and the mass ratio of other auxiliary agents is 2%.
Comparative example 4
Other components of the nitro-fertilizer in the market are as follows: the mass ratio of the nitric acid rare earth is 1%, the mass ratio of the medium trace element fertilizer raw material is 5%, the mass ratio of the macro-element fertilizer raw material is 90%, and the mass ratio of other auxiliary agents is 4%.
The following are test sections:
the nitro fertilizers prepared in the above example 1 and comparative examples 1 to 4 were subjected to lettuce potting fertilizer effect experiments to obtain test results as shown in the following table 2: the germination rate (the percentage of the seedlings of the lettuce sown after pregermination to the total number of the sown lettuce), the waterlogging resistance (the percentage of the survival number of the lettuce after 7 days after 300% of irrigation amount in the later growth period to the total number of the lettuce, which belongs to one of the stress resistance), the yield, the root weight and the soluble protein content (the absorption and utilization condition of the reflecting nitrogen fertilizer).
TABLE 2 Fertilizer efficiency test results of nitro fertilizer lettuce potted plants of examples and comparative examples
It can be seen that the rate of emergence, the flooding resistance, the yield, the root weight and the soluble protein content of the nitro-fertilizer containing rare earth nitrate provided in example 1 are all obviously superior to those of comparative examples 1-4.
Comparison experiments of different rare earth nitrate addition ratios:
example 1
In the nitro-fertilizer containing rare earth nitrate, the mass ratio of the rare earth nitrate is 0.1%, the mass ratio of the slow-release medium is 1%, the mass ratio of the medium-trace element fertilizer raw material is 1%, the mass ratio of the macro-element fertilizer raw material is 87.9%, and the mass ratio of the other auxiliary agents is 10%.
Example 2
In the nitro-fertilizer containing rare earth nitrate, the mass ratio of the rare earth nitrate is 0.5%, the mass ratio of the slow-release medium is 5%, the mass ratio of the medium-trace element fertilizer raw material is 5%, the mass ratio of the macro-element fertilizer raw material is 84.5%, and the mass ratio of the other auxiliary agents is 5%.
Example 3
In the nitro-fertilizer containing rare earth nitrate, the mass ratio of the rare earth nitrate is 1%, the mass ratio of the slow-release medium is 9%, the mass ratio of the medium-trace element fertilizer raw materials is 9%, the mass ratio of the macro-element fertilizer raw materials is 80%, and the mass ratio of other additives is 1%.
Comparative example 1
Comparative example nitro fertilizer composition is as follows: the mass ratio of the rare earth nitrate is 0.09%, the mass ratio of the slow-release medium is 0.9%, the mass ratio of the medium-trace element fertilizer raw material is 0.9%, the mass ratio of the macro-element fertilizer raw material is 98.1%, and the mass ratio of the other auxiliary agents is 0.01%.
Comparative example 2
Comparative example nitro fertilizer composition is as follows: the mass ratio of the rare earth nitrate is 1.1%, the mass ratio of the slow-release medium is 10.1%, the mass ratio of the medium-trace element fertilizer raw material is 10.1%, the mass ratio of the macro-element fertilizer raw material is 77.8%, and the mass ratio of the other auxiliary agents is 0.9%.
The following are test sections: the nitro fertilizers prepared in the above examples 1-3 and comparative examples 1-2 were used to measure fertilizer strength and perform a tomato potting fertilizer effect test to obtain the test results shown in the following table 3: the seedling burning rate (150 kg/mu of one-time fertilization in the seedling stage, the number of burning seedlings accounts for the percentage of the transplanted seedlings), the plant height, the cold resistance (the number of damaged tomato leaves accounts for the percentage of the total number of the test after the temperature is suddenly reduced by 10 ℃ for 3 days, which belongs to one stress resistance test), and the number of fruiting.
Table 3 tomato fertilizer efficiency test results of nitro fertilizer of examples and comparative examples
It can be seen that the nitro-fertilizers containing rare earth nitrate provided in examples 1 to 3 have seedling burning rate, plant height, cold resistance and initial result number obviously superior to those of comparative examples 1 and 2.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents or improvements made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. The nitro-fertilizer containing the rare earth nitrate is characterized by comprising the rare earth nitrate, a slow release medium, a medium-trace element fertilizer raw material, a macro-element fertilizer raw material and other auxiliaries.
2. The rare earth nitrate-containing nitro-fertilizer of claim 1, wherein the mass ratio of the rare earth nitrate is 0.1-1%, the mass ratio of the slow-release medium is 1-10%, the mass ratio of the medium-trace element fertilizer raw materials is 1-10%, the mass ratio of the macroelement fertilizer raw materials is 80-98%, and the mass ratio of the other auxiliary agents is 1-10%.
3. The rare earth nitrate-containing nitro-fertilizer of claim 1, wherein the rare earth nitrate comprises rare earth oxides, and the total content of the rare earth oxides is not less than 40%.
4. The rare earth nitrate-containing nitro-fertilizer of claim 1, wherein the rare earth nitrate has a particle size of 30-150 mesh and a water content of 2% or less.
5. The rare earth nitrate-containing nitro-fertilizer of any one of claims 1 to 4, wherein the slow release medium comprises at least one of nitrification inhibitor, bentonite, zeolite, diatomaceous earth, sepiolite.
6. The rare earth nitrate-containing nitro-fertilizer of any one of claims 1 to 4, wherein the medium trace element fertilizer raw material comprises at least one of borax, boric acid, zinc sulfate, manganese sulfate, copper sulfate, ferrous sulfate, and ammonium molybdate.
7. The rare earth nitrate-containing nitro-fertilizer of any one of claims 1 to 4, wherein the macro-element fertilizer raw material comprises at least one of phosphorus nitrate, phosphorus ammonium nitrate, monoammonium phosphate, diammonium phosphate, ammonium polyphosphate, potassium white, potassium sulfate, and potassium chloride.
8. The rare earth nitrate-containing nitro-fertilizer of claim 7, wherein the other additives include at least one of a fertilizer filler, anti-caking oil and anti-caking powder.
9. A rare earth nitrate-containing nitro-fertilizer as claimed in claim 8, wherein said fertilizer filler includes at least one of montmorillonite, kaolin, bentonite, and the like.
10. A method for preparing a nitro-fertilizer containing rare earth nitrate, which is characterized by preparing the nitro-fertilizer containing rare earth nitrate according to any one of claims 1 to 9, preparing rare earth nitrate, a slow release medium, a medium trace element fertilizer raw material, a macroelement fertilizer raw material and other auxiliary agents, and granulating to obtain a fertilizer finished product.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103483046A (en) * | 2013-09-23 | 2014-01-01 | 王焰森 | Special crop fertilizer |
| CN103804094A (en) * | 2014-02-21 | 2014-05-21 | 柳州华源动植宝有限公司 | Fruit crop water-soluble fertilizer as well as preparation method and application for same |
| CN108794266A (en) * | 2018-07-19 | 2018-11-13 | 韩涛 | Nitric acid phosphorous controlled release bulk blended fertilizer |
-
2020
- 2020-01-16 CN CN202010046824.8A patent/CN111393231A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103483046A (en) * | 2013-09-23 | 2014-01-01 | 王焰森 | Special crop fertilizer |
| CN103804094A (en) * | 2014-02-21 | 2014-05-21 | 柳州华源动植宝有限公司 | Fruit crop water-soluble fertilizer as well as preparation method and application for same |
| CN108794266A (en) * | 2018-07-19 | 2018-11-13 | 韩涛 | Nitric acid phosphorous controlled release bulk blended fertilizer |
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