CN113372169A - Nitrogen, phosphorus and potassium slow-release compound fertilizer for landscape flowers - Google Patents
Nitrogen, phosphorus and potassium slow-release compound fertilizer for landscape flowers Download PDFInfo
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- CN113372169A CN113372169A CN202110649961.5A CN202110649961A CN113372169A CN 113372169 A CN113372169 A CN 113372169A CN 202110649961 A CN202110649961 A CN 202110649961A CN 113372169 A CN113372169 A CN 113372169A
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- potassium
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- 239000003337 fertilizer Substances 0.000 title claims abstract description 68
- 150000001875 compounds Chemical class 0.000 title claims abstract description 27
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title abstract description 26
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 title abstract description 13
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 title abstract description 13
- 229910052757 nitrogen Inorganic materials 0.000 title abstract description 13
- 229910052698 phosphorus Inorganic materials 0.000 title abstract description 13
- 239000011574 phosphorus Substances 0.000 title abstract description 13
- 239000011591 potassium Substances 0.000 title abstract description 13
- 229910052700 potassium Inorganic materials 0.000 title abstract description 13
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000004202 carbamide Substances 0.000 claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 210000003608 fece Anatomy 0.000 claims abstract description 10
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- WZLMXYBCAZZIRQ-UHFFFAOYSA-N [N].[P].[K] Chemical compound [N].[P].[K] WZLMXYBCAZZIRQ-UHFFFAOYSA-N 0.000 claims description 13
- 239000002245 particle Substances 0.000 claims description 11
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 10
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 claims description 8
- 229910000013 Ammonium bicarbonate Inorganic materials 0.000 claims description 8
- 235000012538 ammonium bicarbonate Nutrition 0.000 claims description 8
- 239000001099 ammonium carbonate Substances 0.000 claims description 8
- YYRMJZQKEFZXMX-UHFFFAOYSA-L calcium bis(dihydrogenphosphate) Chemical compound [Ca+2].OP(O)([O-])=O.OP(O)([O-])=O YYRMJZQKEFZXMX-UHFFFAOYSA-L 0.000 claims description 8
- 229910000389 calcium phosphate Inorganic materials 0.000 claims description 8
- 239000011790 ferrous sulphate Substances 0.000 claims description 8
- 235000003891 ferrous sulphate Nutrition 0.000 claims description 8
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims description 8
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims description 8
- 235000019691 monocalcium phosphate Nutrition 0.000 claims description 8
- 229910000402 monopotassium phosphate Inorganic materials 0.000 claims description 8
- 235000019796 monopotassium phosphate Nutrition 0.000 claims description 8
- PJNZPQUBCPKICU-UHFFFAOYSA-N phosphoric acid;potassium Chemical compound [K].OP(O)(O)=O PJNZPQUBCPKICU-UHFFFAOYSA-N 0.000 claims description 8
- 235000003145 Hippophae rhamnoides Nutrition 0.000 claims description 5
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 5
- 229960000583 acetic acid Drugs 0.000 claims description 5
- 238000009833 condensation Methods 0.000 claims description 5
- 230000005494 condensation Effects 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 239000012362 glacial acetic acid Substances 0.000 claims description 5
- 239000010871 livestock manure Substances 0.000 claims description 5
- 229910017604 nitric acid Inorganic materials 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 5
- 238000007873 sieving Methods 0.000 claims description 5
- 241000196324 Embryophyta Species 0.000 claims 6
- 240000000950 Hippophae rhamnoides Species 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 10
- 230000008901 benefit Effects 0.000 abstract description 7
- 239000002689 soil Substances 0.000 abstract description 7
- 238000001179 sorption measurement Methods 0.000 abstract description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052799 carbon Inorganic materials 0.000 abstract description 4
- 238000000354 decomposition reaction Methods 0.000 abstract description 2
- 230000003647 oxidation Effects 0.000 abstract description 2
- 238000007254 oxidation reaction Methods 0.000 abstract description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract 2
- XADGZBXFWQHBDB-UHFFFAOYSA-N 5-ethylfuran-2-carbaldehyde Chemical compound CCC1=CC=C(C=O)O1 XADGZBXFWQHBDB-UHFFFAOYSA-N 0.000 abstract 1
- 238000013270 controlled release Methods 0.000 description 5
- 235000015097 nutrients Nutrition 0.000 description 5
- 241000229143 Hippophae Species 0.000 description 4
- 238000004090 dissolution Methods 0.000 description 3
- 239000000618 nitrogen fertilizer Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 239000002028 Biomass Substances 0.000 description 2
- 229920001807 Urea-formaldehyde Polymers 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 150000002484 inorganic compounds Chemical class 0.000 description 2
- 229910010272 inorganic material Inorganic materials 0.000 description 2
- 150000002894 organic compounds Chemical class 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- ODGAOXROABLFNM-UHFFFAOYSA-N polynoxylin Chemical compound O=C.NC(N)=O ODGAOXROABLFNM-UHFFFAOYSA-N 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 235000001465 calcium Nutrition 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000035558 fertility Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000015816 nutrient absorption Nutrition 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 230000002688 persistence Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B1/00—Superphosphates, i.e. fertilisers produced by reacting rock or bone phosphates with sulfuric or phosphoric acid in such amounts and concentrations as to yield solid products directly
- C05B1/02—Superphosphates
-
- 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
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pest Control & Pesticides (AREA)
- Soil Sciences (AREA)
- Fertilizers (AREA)
Abstract
A slow-release N-P-K compound fertilizer for landscape flower is prepared from urea, the condensate of 5-ethyl-2-furaldehyde, marsh gas dregs, biochar, mixed fertilizer, seabird dung and water. The slow-release compound fertilizer can effectively improve soil and improve fertilizer effect, has good adsorption performance, large porosity and specific surface area, strong adsorption force, oxidation resistance and biological decomposition resistance; the fertilizer has the functions of improving soil, slowly releasing fertilizer, fixing carbon and reducing emission, has the greatest advantage of realizing the slow release of nitrogen, phosphorus and potassium, greatly promotes the growth of landscape flowers and has the effective period of more than 40 days.
Description
Technical Field
The invention belongs to the technical field of fertilizer slow release agent production, and particularly relates to a nitrogen-phosphorus-potassium slow release compound fertilizer for landscape flowers.
Background
At present, the industrial fertilizer is a chemical fertilizer mainly containing nitrogen, phosphorus and potassium, and can supplement corresponding elements after being used, so that the industrial fertilizer has a certain yield-increasing effect on crops. However, the utilization rate of the fertilizer is always at a very low level, a large amount of nitrogen, phosphorus and potassium elements cannot be effectively utilized by crops and are retained in soil because of improper release time, the waste of nutrient elements is serious, and environmental pollution is caused. After the chemical fertilizer is used for a long time, soil is seriously hardened, organic microorganisms are reduced and even polluted, so that the quality of the soil is reduced, and the yield of crops is reduced.
The application of the slow/controlled release fertilizer is one of effective ways for reducing the loss of the fertilizer elements, and generally the utilization rate of the slow/controlled release fertilizer can be improved by 10-30 percent compared with the utilization rate of a common nitrogen fertilizer, and the fertilizing amount is reduced by 15-20 percent. Due to the advantages, the slow/controlled release fertilizer becomes a hotspot of fertilizer research in recent years, the slow/controlled release fertilizer is developed rapidly in China, certain economic benefit and certain ecological benefit are obtained, and compared with a method for improving the utilization rate of the fertilizer by agricultural measures and biological approaches, the research and development of the slow/controlled release fertilizer has better effect on improving the utilization rate of the fertilizer and has greater advantages. The urea-formaldehyde slow-release nitrogen fertilizer is the slow-release fertilizer which is researched and developed successfully at the earliest time and is commercialized at first, but is the slow-release fertilizer with the largest application amount in the world at present, and becomes a slow-release nitrogen fertilizer variety which is concerned. The compound fertilizer has the advantages of complete nutrient varieties and high content, belongs to quick-acting fertilizers, and cannot be completely matched with nutrient absorption of crops in the fertilizer effect duration time.
However, at present, organic and inorganic compound fertilizers do not have corresponding slow release fertilizers or have poor slow release effect, urea-formaldehyde fertilizers lack natural biomass, and the compound fertilizers have high fertilizer efficiency and weak persistence, so that the organic and inorganic compound fertilizers have advantages and disadvantages respectively. Meanwhile, various flowers need to absorb more nitrogen, phosphorus and potassium, so that the research on the slow release fertilizer containing the organic material has important significance for improving the flower quality and the fertilizer quality and effect.
Disclosure of Invention
In order to solve the technical problems and make up the defects of the prior art, the invention provides a nitrogen-phosphorus-potassium slow-release compound fertilizer for landscape flowers.
The technical scheme of the invention is as follows: a nitrogen-phosphorus-potassium slow-release compound fertilizer for landscape flowers is prepared from the following raw materials in parts by weight: 10-20 parts of condensation compound of urea and 5-ethyl-2-furfural, 30-40 parts of biogas residue, 10-15 parts of biochar, 20-40 parts of mixed fertilizer, 10-15 parts of seabuckthorn manure and a proper amount of water; the mixed fertilizer consists of ferrous sulfate, ammonium bicarbonate, calcium superphosphate and potassium dihydrogen phosphate.
Preferably, the mass ratio of the ferrous sulfate, the ammonium bicarbonate, the calcium superphosphate and the potassium dihydrogen phosphate in the mixed fertilizer is 1:5:6: 10.
Preferably, the seabird dung is in a dry state, the water content is less than 1%, and the particle size is more than or equal to 1 mm.
Preferably, the particle size of the biochar is more than or equal to 100 mu m.
Preferably, the particle size of the biogas residue is more than or equal to 150 μm.
Preferably, the preparation method of the condensate of urea and 5-ethyl-2-furfural comprises the following steps: dissolving urea in water, adjusting the pH value to be alkalescent (7-8) by using sodium hydroxide and nitric acid, adding 5-ethyl-2-furfural, heating to 60-65 ℃ and keeping the temperature for 1 h; and heating to 70 ℃, adding glacial acetic acid to adjust the pH value of the solution to 5-6, keeping the temperature for 1h, drying, crushing and sieving to obtain a urea and 5-ethyl-2-furfural condensate.
Preferably, the molar ratio of the urea to the 5-ethyl-2-furfural is (3-4): 1.
The invention has the beneficial effects that: the biogas residues are rich in organic matters but have little available nutrients, and the conventional method selects the microbial agent to decompose the biogas residues, release the available nutrients in the biogas residues and promote the growth and development of flowers. The urea and the 5-ethyl-2-furfural polymer are fused with the biogas residues, the biogas residues provide natural biological nutrient substances, the biomass capacity of the urea and the 5-ethyl-2-furfural polymer is effectively improved, and the nitrogen slow-release effect is further improved. The mixed fertilizer is prepared by mixing ferrous sulfate, ammonium bicarbonate, calcium superphosphate and potassium dihydrogen phosphate, and has good fertility and quick absorption. The seabird powder contains elements such as phosphorus, potassium and calcium, has the functions of effectively improving soil and improving fertilizer, has better adsorption performance, and can improve slow-release capability by being compounded with a mixed fertilizer. The biochar has larger porosity and specific surface area, stronger adsorption force, oxidation resistance and biological decomposition resistance; the carbon is effectively adsorbed and solidified in the middle of the biochar, and the biological carbon adsorption and solidification device has the functions of improving soil, slowly releasing fertilizer, fixing carbon and reducing emission.
The present invention will be described in further detail with reference to examples.
Detailed Description
Example 1
The nitrogen-phosphorus-potassium slow-release compound fertilizer for landscape flowers is prepared from the following raw materials in parts by weight: 14 parts of condensation compound of urea and 5-ethyl-2-furfural, 36 parts of biogas residues, 13 parts of biochar, 31 parts of mixed fertilizer, 12 parts of seabuckthorn manure and a proper amount of water; the mixed fertilizer consists of ferrous sulfate, ammonium bicarbonate, calcium superphosphate and potassium dihydrogen phosphate in a mass ratio of 1:5:6: 10. The seabird dung is dry, the water content is less than 1%, and the particle size is more than or equal to 1 mm. The particle size of the biochar is more than or equal to 100 mu m. The grain diameter of the biogas residues is more than or equal to 150 mu m.
The preparation method of the condensate of urea and 5-ethyl-2-furfural comprises the following steps: dissolving urea in water, adjusting the pH value to 7.5 by using 2% sodium hydroxide and 1% nitric acid in mass fraction, adding 5-ethyl-2-furfural, heating to 65 ℃ and keeping the temperature for 1 h; heating to 70 ℃, adding glacial acetic acid to adjust the pH value of the solution to 5, keeping the temperature for 1h, drying, crushing and sieving to obtain the urea and 5-ethyl-2-furfural condensate. The molar ratio of the urea to the 5-ethyl-2-furfural is 3.5: 1. The results of experimental tests on the slow-release compound fertilizer in example 1 show that the release rate of nitrogen, phosphorus and potassium is less than 8% in the first 5 days, the dissolution and release rate of nitrogen, phosphorus and potassium is faster in 10 to 20 days, the release rate is less than 35%, and the slow-release effect still exists and is better when the observation period of 40 days is over.
Example 2
The nitrogen-phosphorus-potassium slow-release compound fertilizer for landscape flowers is prepared from the following raw materials in parts by weight: 10 parts of condensation compound of urea and 5-ethyl-2-furfural, 32 parts of biogas residues, 10 parts of biochar, 25 parts of mixed fertilizer, 12 parts of seabuckthorn manure and a proper amount of water; the mixed fertilizer consists of ferrous sulfate, ammonium bicarbonate, calcium superphosphate and potassium dihydrogen phosphate in a mass ratio of 1:5:6: 10. The seabird dung is dry, the water content is less than 1%, and the particle size is more than or equal to 1 mm. The particle size of the biochar is more than or equal to 100 mu m. The grain diameter of the biogas residues is more than or equal to 150 mu m.
The preparation method of the condensate of urea and 5-ethyl-2-furfural comprises the following steps: dissolving urea in water, adjusting the pH value to 7.5 by using 2% sodium hydroxide and 1% nitric acid in mass fraction, adding 5-ethyl-2-furfural, heating to 65 ℃ and keeping the temperature for 1 h; heating to 70 ℃, adding glacial acetic acid to adjust the pH value of the solution to 5, keeping the temperature for 1h, drying, crushing and sieving to obtain the urea and 5-ethyl-2-furfural condensate. The molar ratio of the urea to the 5-ethyl-2-furfural is 3: 1. The results of experimental tests on the slow-release compound fertilizer in the embodiment 2 show that the release rate of nitrogen, phosphorus and potassium is less than 10% in the first 5 days, the dissolution and release rate of nitrogen, phosphorus and potassium is faster in 10 to 20 days, the release rate is less than 38%, and the slow-release effect still exists and is better when the observation period of 40 days is over.
Example 3
The nitrogen-phosphorus-potassium slow-release compound fertilizer for landscape flowers is prepared from the following raw materials in parts by weight: 19 parts of condensation compound of urea and 5-ethyl-2-furfural, 38 parts of biogas residues, 14 parts of biochar, 38 parts of mixed fertilizer, 14 parts of seabuckthorn and a proper amount of water; the mixed fertilizer consists of ferrous sulfate, ammonium bicarbonate, calcium superphosphate and potassium dihydrogen phosphate in a mass ratio of 1:5:6: 10. The seabird dung is dry, the water content is less than 1%, and the particle size is more than or equal to 1 mm. The particle size of the biochar is more than or equal to 100 mu m. The grain diameter of the biogas residues is more than or equal to 150 mu m.
The preparation method of the condensate of urea and 5-ethyl-2-furfural comprises the following steps: dissolving urea in water, adjusting the pH value to 8 by using 2% sodium hydroxide and 1% nitric acid in mass fraction, adding 5-ethyl-2-furfural, heating to 65 ℃ and keeping the temperature for 1 h; heating to 70 ℃, adding glacial acetic acid to adjust the pH value of the solution to 5, keeping the temperature for 1h, drying, crushing and sieving to obtain the urea and 5-ethyl-2-furfural condensate. The molar ratio of the urea to the 5-ethyl-2-furfural is 3.8: 1. The results of experimental tests on the slow-release compound fertilizer in example 3 show that the release rate of nitrogen, phosphorus and potassium is less than 13% in the first 5 days, the dissolution and release rate of nitrogen, phosphorus and potassium is faster in 10 to 20 days, the release rate is less than 40%, and the slow-release effect still exists and is better when the observation period of 40 days is over.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in any way. Any simple modification, change and equivalent changes of the above embodiments according to the technical essence of the invention are still within the protection scope of the technical solution of the invention.
Claims (7)
1. The nitrogen-phosphorus-potassium slow-release compound fertilizer for landscape flowers is characterized by being prepared from the following raw materials in parts by weight: 10-20 parts of condensation compound of urea and 5-ethyl-2-furfural, 30-40 parts of biogas residue, 10-15 parts of biochar, 20-40 parts of mixed fertilizer, 10-15 parts of seabuckthorn manure and a proper amount of water; the mixed fertilizer consists of ferrous sulfate, ammonium bicarbonate, calcium superphosphate and potassium dihydrogen phosphate.
2. The nitrogen-phosphorus-potassium slow-release compound fertilizer for landscape flowers and plants as claimed in claim 1, wherein the mass ratio of ferrous sulfate, ammonium bicarbonate, calcium superphosphate and potassium dihydrogen phosphate in the mixed fertilizer is 1:5:6: 10.
3. The nitrogen-phosphorus-potassium slow-release compound fertilizer for landscape flowers and plants as claimed in claim 1, wherein the seabird manure is in a dry state, the water content is less than 1%, and the particle size is more than or equal to 1 mm.
4. The nitrogen-phosphorus-potassium slow-release compound fertilizer for landscape flowers and plants as claimed in claim 1, wherein the particle size of the biochar is more than or equal to 100 μm.
5. The nitrogen-phosphorus-potassium slow-release compound fertilizer for landscape flowers and plants as claimed in claim 1, wherein the grain size of the biogas residues is more than or equal to 150 μm.
6. The nitrogen-phosphorus-potassium slow-release compound fertilizer for landscape flowers and plants as claimed in claim 1, wherein the preparation method of the condensate of urea and 5-ethyl-2-furfural comprises the following steps: dissolving urea in water, adjusting the pH value to be alkalescent (7-8) by using sodium hydroxide and nitric acid, adding 5-ethyl-2-furfural, heating to 60-65 ℃ and keeping the temperature for 1 h; and heating to 70 ℃, adding glacial acetic acid to adjust the pH value of the solution to 5-6, keeping the temperature for 1h, drying, crushing and sieving to obtain a urea and 5-ethyl-2-furfural condensate.
7. The nitrogen-phosphorus-potassium slow-release compound fertilizer for landscape flowers and plants as claimed in claims 1 and 5, wherein the molar ratio of urea to 5-ethyl-2-furfural is (3-4): 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110649961.5A CN113372169A (en) | 2021-06-10 | 2021-06-10 | Nitrogen, phosphorus and potassium slow-release compound fertilizer for landscape flowers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110649961.5A CN113372169A (en) | 2021-06-10 | 2021-06-10 | Nitrogen, phosphorus and potassium slow-release compound fertilizer for landscape flowers |
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| Publication Number | Publication Date |
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| CN113372169A true CN113372169A (en) | 2021-09-10 |
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| CN202110649961.5A Pending CN113372169A (en) | 2021-06-10 | 2021-06-10 | Nitrogen, phosphorus and potassium slow-release compound fertilizer for landscape flowers |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1324256A (en) * | 1969-09-22 | 1973-07-25 | Nacional Calvo Sotelo De Combu | Process for preparing a fertilizer and furfural |
| JP2001206851A (en) * | 2000-01-26 | 2001-07-31 | Shiseido Co Ltd | Skin preparation for external use |
| CN105367206A (en) * | 2014-08-26 | 2016-03-02 | 中国科学院沈阳应用生态研究所 | Compound fertilizer special for bulb flowers and application of compound fertilizer |
| CN110423163A (en) * | 2019-09-03 | 2019-11-08 | 河北农业大学 | Slow and controlled release fertilizer for corn |
| CN112919977A (en) * | 2021-04-12 | 2021-06-08 | 兰州交通大学 | Modified oil shale semicoke coated slow and controlled release fertilizer and preparation method thereof |
-
2021
- 2021-06-10 CN CN202110649961.5A patent/CN113372169A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1324256A (en) * | 1969-09-22 | 1973-07-25 | Nacional Calvo Sotelo De Combu | Process for preparing a fertilizer and furfural |
| JP2001206851A (en) * | 2000-01-26 | 2001-07-31 | Shiseido Co Ltd | Skin preparation for external use |
| CN105367206A (en) * | 2014-08-26 | 2016-03-02 | 中国科学院沈阳应用生态研究所 | Compound fertilizer special for bulb flowers and application of compound fertilizer |
| CN110423163A (en) * | 2019-09-03 | 2019-11-08 | 河北农业大学 | Slow and controlled release fertilizer for corn |
| CN112919977A (en) * | 2021-04-12 | 2021-06-08 | 兰州交通大学 | Modified oil shale semicoke coated slow and controlled release fertilizer and preparation method thereof |
Non-Patent Citations (3)
| Title |
|---|
| ARIEL MARTÍNEZ GARCÍA ET AL.: "Kinetics of the condensation reaction of urea and furfural in a heterogeneous phase leading to difurfurylidenetriurea: A calorimetric study", THERMOCHIMICA ACTA, 14 December 2018 (2018-12-14) * |
| 宋学君;张旭东;石元亮;: "尿素糠醛缩合物缓释化肥的研究", 环境科学与技术, no. 05, 15 May 2011 (2011-05-15) * |
| 煤炭科学研究院北京建井研究所注浆室: "糠醛-尿素浆液的研究", 煤炭科学技术, no. 01, 31 January 1980 (1980-01-31) * |
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