CN112645764A - Fertilizer for improving alkaline soil and preparation method thereof - Google Patents
Fertilizer for improving alkaline soil and preparation method thereof Download PDFInfo
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- CN112645764A CN112645764A CN202011634722.4A CN202011634722A CN112645764A CN 112645764 A CN112645764 A CN 112645764A CN 202011634722 A CN202011634722 A CN 202011634722A CN 112645764 A CN112645764 A CN 112645764A
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- 239000002689 soil Substances 0.000 title claims abstract description 53
- 239000003337 fertilizer Substances 0.000 title claims abstract description 39
- 238000002360 preparation method Methods 0.000 title abstract description 9
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims abstract description 52
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims abstract description 48
- 235000010333 potassium nitrate Nutrition 0.000 claims abstract description 26
- 239000004323 potassium nitrate Substances 0.000 claims abstract description 26
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000011591 potassium Substances 0.000 claims abstract description 21
- 229910052700 potassium Inorganic materials 0.000 claims abstract description 21
- 239000011573 trace mineral Substances 0.000 claims abstract description 18
- 235000013619 trace mineral Nutrition 0.000 claims abstract description 18
- YYRMJZQKEFZXMX-UHFFFAOYSA-L calcium bis(dihydrogenphosphate) Chemical compound [Ca+2].OP(O)([O-])=O.OP(O)([O-])=O YYRMJZQKEFZXMX-UHFFFAOYSA-L 0.000 claims abstract description 17
- 229910000389 calcium phosphate Inorganic materials 0.000 claims abstract description 17
- 235000019691 monocalcium phosphate Nutrition 0.000 claims abstract description 17
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000000440 bentonite Substances 0.000 claims abstract description 14
- 229910000278 bentonite Inorganic materials 0.000 claims abstract description 14
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 14
- 239000001257 hydrogen Substances 0.000 claims abstract description 14
- 229920002643 polyglutamic acid Polymers 0.000 claims abstract description 14
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 13
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910000387 ammonium dihydrogen phosphate Inorganic materials 0.000 claims abstract description 13
- 239000004202 carbamide Substances 0.000 claims abstract description 13
- 235000019837 monoammonium phosphate Nutrition 0.000 claims abstract description 13
- 239000006012 monoammonium phosphate Substances 0.000 claims abstract description 13
- UIGKOBGQTLLQBZ-UHFFFAOYSA-O tetraazanium;nitrate;phosphate Chemical compound [NH4+].[NH4+].[NH4+].[NH4+].[O-][N+]([O-])=O.[O-]P([O-])([O-])=O UIGKOBGQTLLQBZ-UHFFFAOYSA-O 0.000 claims abstract description 13
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052921 ammonium sulfate Inorganic materials 0.000 claims abstract description 10
- 235000011130 ammonium sulphate Nutrition 0.000 claims abstract description 10
- 239000000853 adhesive Substances 0.000 claims abstract 2
- 230000001070 adhesive effect Effects 0.000 claims abstract 2
- 238000002156 mixing Methods 0.000 claims description 25
- 238000010438 heat treatment Methods 0.000 claims description 20
- 239000002002 slurry Substances 0.000 claims description 20
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 6
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 5
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 5
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 5
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 5
- 229910052796 boron Inorganic materials 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 5
- 229910052742 iron Inorganic materials 0.000 claims description 5
- 239000011777 magnesium Substances 0.000 claims description 5
- 229910052749 magnesium Inorganic materials 0.000 claims description 5
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 229910052750 molybdenum Inorganic materials 0.000 claims description 5
- 239000011733 molybdenum Substances 0.000 claims description 5
- 238000012216 screening Methods 0.000 claims description 5
- 239000011701 zinc Substances 0.000 claims description 5
- 229910052725 zinc Inorganic materials 0.000 claims description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 12
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 abstract description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 abstract description 2
- 239000011575 calcium Substances 0.000 abstract description 2
- 229910052791 calcium Inorganic materials 0.000 abstract description 2
- 239000000618 nitrogen fertilizer Substances 0.000 abstract description 2
- 239000011574 phosphorus Substances 0.000 abstract description 2
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 239000011593 sulfur Substances 0.000 abstract description 2
- 229910052717 sulfur Inorganic materials 0.000 abstract description 2
- 241000196324 Embryophyta Species 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- QJZYHAIUNVAGQP-UHFFFAOYSA-N 3-nitrobicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid Chemical compound C1C2C=CC1C(C(=O)O)C2(C(O)=O)[N+]([O-])=O QJZYHAIUNVAGQP-UHFFFAOYSA-N 0.000 description 3
- 230000012010 growth Effects 0.000 description 3
- 239000004021 humic acid Substances 0.000 description 3
- 241000209094 Oryza Species 0.000 description 2
- 235000007164 Oryza sativa Nutrition 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 230000009931 harmful effect Effects 0.000 description 2
- 235000009566 rice Nutrition 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000975 bioactive effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000008139 complexing agent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000035558 fertility Effects 0.000 description 1
- 230000035784 germination Effects 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- SEOVTRFCIGRIMH-UHFFFAOYSA-N indole-3-acetic acid Chemical group C1=CC=C2C(CC(=O)O)=CNC2=C1 SEOVTRFCIGRIMH-UHFFFAOYSA-N 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000003204 osmotic effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000008635 plant growth Effects 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 229910001415 sodium ion Inorganic materials 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Soil Sciences (AREA)
- Fertilizers (AREA)
Abstract
A fertilizer for improving alkaline soil and a preparation method thereof, relating to the field of chemical fertilizers; the adhesive comprises the following components in parts by mass: 40-60 parts of ammonium phosphate nitrate, 5-20 parts of monoammonium phosphate, 5-20 parts of potassium nitrate, 20-30 parts of urea, 1-10 parts of potassium humate, 1-10 parts of calcium superphosphate, 1-10 parts of citric acid, 1-10 parts of potassium nitrate, 1-10 parts of ammonium sulfate, 0-10 parts of gamma-polyglutamic acid, 0-10 parts of hydrogen bentonite and 0-5 parts of trace elements. The fertilizer for improving the alkaline soil reduces the alkalinity of the soil, improves the granular structure of the soil, reduces the compactness of the soil and increases the slow-balancing capacity of the soil. The calcium superphosphate can supply phosphorus, calcium, sulfur and other elements to plants, has the effect of improving alkaline soil, can be used as a base fertilizer, is mixed with a nitrogen fertilizer, has the effect of fixing nitrogen, and reduces the loss of nitrogen.
Description
Technical Field
The invention belongs to the field of fertilizers, and particularly relates to a fertilizer for improving alkaline soil and a preparation method thereof.
Background
The alkaline soil has high salinity, low organic matter content, poor soil physical and chemical properties, poor buffering performance, low water and fertility retention, more anions and cations harmful to the growth of crops, no contribution to the growth and development of crops and low land productivity and bearing capacity. The higher the degree of alkalization of the soil, the poorer the physicochemical properties, the tendency to swell, muddy and disperse when wet, and the tendency to shrink, harden and harden when dry, and the particularly poor aeration and water permeability properties. The high dispersion of sodium ions is the main cause of these hazards, it can be substituted by other salts contained in the soil, resulting in the formation of sodium carbonate, which is highly alkaline, and the poisoning effect of sodium carbonate is also a great cause of the harmful effect of alkaline earth on plants. The alkalization degree of the soil is high, the osmotic pressure of the solution is increased, so that the physiological drought of the plants can be caused, the difficulty in absorbing water by the plants is caused, the root system and the germination of the seeds can not absorb enough water from the soil, and even the water is caused to leak from root cells, so that the plants are dehydrated and killed.
Disclosure of Invention
In order to overcome the defects of the prior art, one of the purposes of the invention is to provide a fertilizer for improving alkaline soil, reduce the alkalinity of the soil, improve the granular structure of the soil, reduce the compactness of the soil, increase the slow balance capability of the soil, simultaneously have the function of fixing nitrogen, reduce the loss of nitrogen and promote the growth of plants.
The second object of the present invention is to provide a method for preparing the fertilizer for improving alkaline soil.
One of the purposes of the invention is realized by adopting the following technical scheme:
the fertilizer for improving the alkaline soil comprises the following components in parts by mass:
40-60 parts of ammonium phosphate nitrate, 5-20 parts of monoammonium phosphate, 5-20 parts of potassium nitrate, 20-30 parts of urea, 1-10 parts of potassium humate, 1-10 parts of calcium superphosphate, 1-10 parts of citric acid, 1-10 parts of potassium nitrate, 1-10 parts of ammonium sulfate, 0-10 parts of gamma-polyglutamic acid, 0-10 parts of hydrogen bentonite and 0-5 parts of trace elements.
Further, the trace element is at least one of boron, zinc, iron, manganese, molybdenum or magnesium.
Further, the coating comprises the following components in parts by mass:
40-50 parts of ammonium phosphate nitrate, 10-15 parts of monoammonium phosphate, 5-10 parts of potassium nitrate, 20-25 parts of urea, 5-10 parts of potassium humate, 1-5 parts of calcium superphosphate, 1-5 parts of citric acid, 1-5 parts of potassium nitrate, 1-5 parts of ammonium sulfate, 1-5 parts of gamma-polyglutamic acid, 2-6 parts of hydrogen bentonite and 0.1-5 parts of trace elements.
Further, the mass ratio of potassium humate, calcium superphosphate and citric acid is 1-2: 0.8-1.2:1.
The second purpose of the invention is realized by adopting the following technical scheme:
a preparation method of a fertilizer for improving alkaline soil comprises the following steps:
s1, adding ammonium phosphate nitrate and monoammonium phosphate into a melting pot, heating and stirring to obtain molten slurry, and overflowing into a first-stage mixing pot;
s2, adding urea and potassium nitrate into the molten slurry in the first-stage mixing pot, continuously heating to keep the materials in a molten state, and overflowing the mixed melt to the second-stage mixing pot;
s3, mixing and stirring calcium superphosphate, citric acid and hydrogen bentonite uniformly, adding the mixture into a secondary mixing pot, sequentially adding potassium humate, potassium nitrate, gamma-polyglutamic acid and trace elements, and continuously heating to keep the materials in a molten state to obtain mixed molten slurry;
and S4, granulating, cooling and screening the mixed molten slurry obtained in the step S3 to obtain the fertilizer.
Further, in step S1, the heating temperature is 160 ℃ to 170 ℃.
Further, in step S2, the heating temperature is 150 ℃ to 160 ℃.
Further, in step S3, the heating temperature is 140 ℃ to 150 ℃.
Further, in step S4, the granulation is completed in a tower granulator.
Compared with the prior art, the invention has the beneficial effects that:
the fertilizer for improving the alkaline soil reduces the alkalinity of the soil, improves the granular structure of the soil, reduces the compactness of the soil and increases the slow-balancing capacity of the soil. The calcium superphosphate can supply phosphorus, calcium, sulfur and other elements to plants, has the effect of improving alkaline soil, can be used as a base fertilizer, is mixed with a nitrogen fertilizer, has the effect of fixing nitrogen, and reduces the loss of nitrogen. The humic acid potassium is a high-efficiency organic potassium fertilizer, and the humic acid is a bioactive preparation, so that the quick-acting potassium content of soil can be increased, the potassium loss and fixation can be reduced, the potassium absorption and utilization rate of crops can be increased, and the humic acid potassium fertilizer has the functions of improving soil, promoting crop growth, improving the stress resistance of crops, improving crop quality, protecting agricultural ecological environment and the like; citric acid is an acidic complexing agent and forms a stable complex with metal elements in the fertilizer; ammonium sulfate is a physiological acid fertilizer ingredient, ammonium molecules contained in the ammonium sulfate can be absorbed by alkali-resistant crops, and residual sulfate radicals can reduce the alkalinity of salt and alkali in soil; the hydrogen bentonite is weakly acidic, has strong adsorption performance, can adsorb nutrient components, and has a slow release effect; the gamma-polyglutamic acid can inhibit the absorption of heavy metals and the like from the roots of plants, and reduce the damage of alkaline soil to the plants; through the synergistic effect of the components of the fertilizer, the soil quality is improved, and the stress resistance of crops is improved.
Detailed Description
The present invention will be further described with reference to the following detailed description, and it should be noted that any combination of the following embodiments or technical features may be used to form a new embodiment without conflict.
Example 1
A fertilizer for improving alkaline soil comprises the following components in parts by mass:
40 parts of ammonium phosphate nitrate, 10 parts of monoammonium phosphate, 5 parts of potassium nitrate, 20 parts of urea, 5 parts of potassium humate, 1 part of calcium superphosphate, 1 part of citric acid, 1 part of potassium nitrate, 1 part of ammonium sulfate, 1 part of gamma-polyglutamic acid, 2 parts of hydrogen bentonite and 1 part of trace elements, wherein the trace elements comprise boron, zinc, iron, manganese, molybdenum and magnesium.
A preparation method of a fertilizer for improving alkaline soil comprises the following steps:
s1, adding ammonium phosphate nitrate and monoammonium phosphate into a melting pot, heating and stirring at 160 ℃ to obtain molten slurry, and overflowing into a first-stage mixing pot;
s2, adding urea and potassium nitrate into the molten slurry in the first-stage mixing pot, continuing to heat at 150 ℃ to keep the materials in a molten state, and overflowing the mixed melt to the second-stage mixing pot;
s3, mixing and stirring calcium superphosphate, citric acid and hydrogen bentonite uniformly, adding the mixture into a secondary mixing pot, sequentially adding potassium humate, potassium nitrate, gamma-polyglutamic acid and trace elements, and continuously heating at 140 ℃ to keep the materials in a molten state to obtain mixed molten slurry;
and S4, granulating the mixed molten slurry obtained in the step S3 in a high tower granulator, cooling and screening to obtain the fertilizer.
Example 2
A fertilizer for improving alkaline soil comprises the following components in parts by mass:
the fertilizer comprises, by weight, 50 parts of ammonium phosphate nitrate, 15 parts of monoammonium phosphate, 10 parts of potassium nitrate, 25 parts of urea, 10 parts of potassium humate, 5 parts of calcium superphosphate, 5 parts of citric acid, 5 parts of potassium nitrate, 5 parts of ammonium sulfate, 5 parts of gamma-polyglutamic acid, 6 parts of hydrogen bentonite and 5 parts of trace elements, wherein the trace elements comprise boron, zinc, iron, manganese, molybdenum and magnesium.
A preparation method of a fertilizer for improving alkaline soil comprises the following steps:
s1, adding ammonium phosphate nitrate and monoammonium phosphate into a melting pot, heating and stirring at 170 ℃ to obtain molten slurry, and overflowing into a first-stage mixing pot;
s2, adding urea and potassium nitrate into the molten slurry in the first-stage mixing pot, continuing heating at 160 ℃ to keep the materials in a molten state, and overflowing the mixed melt to the second-stage mixing pot;
s3, mixing and stirring calcium superphosphate, citric acid and hydrogen bentonite uniformly, adding the mixture into a secondary mixing pot, sequentially adding potassium humate, potassium nitrate, gamma-polyglutamic acid and trace elements, and continuously heating at 150 ℃ to keep the materials in a molten state to obtain mixed molten slurry;
and S4, granulating the mixed molten slurry obtained in the step S3 in a high tower granulator, cooling and screening to obtain the fertilizer.
Example 3
A fertilizer for improving alkaline soil comprises the following components in parts by mass:
45 parts of ammonium phosphate nitrate, 12 parts of monoammonium phosphate, 8 parts of potassium nitrate, 22 parts of urea, 8 parts of potassium humate, 5 parts of calcium superphosphate, 5 parts of citric acid, 3 parts of potassium nitrate, 3 parts of ammonium sulfate, 3 parts of gamma-polyglutamic acid, 4 parts of hydrogen bentonite and 2 parts of trace elements, wherein the trace elements comprise boron, zinc, iron, manganese, molybdenum and magnesium.
A preparation method of a fertilizer for improving alkaline soil comprises the following steps:
s1, adding ammonium phosphate nitrate and monoammonium phosphate into a melting pot, heating and stirring at 170 ℃ to obtain molten slurry, and overflowing into a first-stage mixing pot;
s2, adding urea and potassium nitrate into the molten slurry in the first-stage mixing pot, continuing heating at 160 ℃ to keep the materials in a molten state, and overflowing the mixed melt to the second-stage mixing pot;
s3, mixing and stirring calcium superphosphate, citric acid and hydrogen bentonite uniformly, adding the mixture into a secondary mixing pot, sequentially adding potassium humate, potassium nitrate, gamma-polyglutamic acid and trace elements, and continuously heating at 150 ℃ to keep the materials in a molten state to obtain mixed molten slurry;
and S4, granulating the mixed molten slurry obtained in the step S3 in a high tower granulator, cooling and screening to obtain the fertilizer.
Performance testing
Field trial cultivation: 3 alkaline rice fields were fertilized with each of the fertilizers of examples 1 to 3 at a rate of 50 kg/mu, and after 2 months, the plant heights of the rice and the pH changes of the soil were measured, and the results are shown in Table 1.
Table 1: test results
As shown in Table 1, the fertilizer for improving alkaline soil of the invention can reduce the alkalinity of soil, improve the granular structure of soil, reduce the compactness of soil, increase the slow balance capability of soil and improve the stress resistance of crops.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.
Claims (9)
1. The fertilizer for improving alkaline soil is characterized by comprising the following components in parts by mass:
40-60 parts of ammonium phosphate nitrate, 5-20 parts of monoammonium phosphate, 5-20 parts of potassium nitrate, 20-30 parts of urea, 1-10 parts of potassium humate, 1-10 parts of calcium superphosphate, 1-10 parts of citric acid, 1-10 parts of potassium nitrate, 1-10 parts of ammonium sulfate, 0-10 parts of gamma-polyglutamic acid, 0-10 parts of hydrogen bentonite and 0-5 parts of trace elements.
2. The fertilizer for improving alkaline soil according to claim 1, wherein: the trace element is at least one of boron, zinc, iron, manganese, molybdenum or magnesium.
3. The fertilizer for improving alkaline soil according to claim 1, wherein: the adhesive comprises the following components in parts by mass:
40-50 parts of ammonium phosphate nitrate, 10-15 parts of monoammonium phosphate, 5-10 parts of potassium nitrate, 20-25 parts of urea, 5-10 parts of potassium humate, 1-5 parts of calcium superphosphate, 1-5 parts of citric acid, 1-5 parts of potassium nitrate, 1-5 parts of ammonium sulfate, 1-5 parts of gamma-polyglutamic acid, 2-6 parts of hydrogen bentonite and 0.1-5 parts of trace elements.
4. An alkaline soil improving fertilizer according to claim 3, wherein: the mass ratio of the potassium humate to the calcium superphosphate to the citric acid is 1-2: 0.8-1.2:1.
5. The method for preparing an alkaline soil improving fertilizer according to any one of claims 1 to 4, comprising the steps of:
s1, adding ammonium phosphate nitrate and monoammonium phosphate into a melting pot, heating and stirring to obtain molten slurry, and overflowing into a first-stage mixing pot;
s2, adding urea and potassium nitrate into the molten slurry in the first-stage mixing pot, continuously heating to keep the materials in a molten state, and overflowing the mixed melt to the second-stage mixing pot;
s3, mixing and stirring calcium superphosphate, citric acid and hydrogen bentonite uniformly, adding the mixture into a secondary mixing pot, sequentially adding potassium humate, potassium nitrate, gamma-polyglutamic acid and trace elements, and continuously heating to keep the materials in a molten state to obtain mixed molten slurry;
and S4, granulating, cooling and screening the mixed molten slurry obtained in the step S3 to obtain the fertilizer.
6. The method of claim 5, wherein the heating temperature in step S1 is 160-170 ℃.
7. The method of claim 5, wherein the heating temperature in step S2 is 150-160 ℃.
8. The method for preparing a fertilizer for improving alkaline soil according to claim 5, wherein the heating temperature is 140 ℃ to 150 ℃ in step S3.
9. The method of claim 5, wherein the step S4 is performed in a tower granulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011634722.4A CN112645764A (en) | 2020-12-31 | 2020-12-31 | Fertilizer for improving alkaline soil and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102001898A (en) * | 2010-10-22 | 2011-04-06 | 李林 | Potassium humate compound fertilizer and preparation method thereof |
| CN103951509A (en) * | 2014-04-28 | 2014-07-30 | 烟台众德集团有限公司 | Functional ecological potash fertilizer for agriculture and preparation method thereof |
| CN108101647A (en) * | 2017-12-29 | 2018-06-01 | 广东拉多美化肥有限公司 | A kind of preparation method of humic acid potassium ureaformaldehyde composite fertilizer |
| CN108299129A (en) * | 2018-03-30 | 2018-07-20 | 河南省现代农业研究院 | A kind of microorganism modifying agent of basic soil and preparation method thereof |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102001898A (en) * | 2010-10-22 | 2011-04-06 | 李林 | Potassium humate compound fertilizer and preparation method thereof |
| CN103951509A (en) * | 2014-04-28 | 2014-07-30 | 烟台众德集团有限公司 | Functional ecological potash fertilizer for agriculture and preparation method thereof |
| CN108101647A (en) * | 2017-12-29 | 2018-06-01 | 广东拉多美化肥有限公司 | A kind of preparation method of humic acid potassium ureaformaldehyde composite fertilizer |
| CN108299129A (en) * | 2018-03-30 | 2018-07-20 | 河南省现代农业研究院 | A kind of microorganism modifying agent of basic soil and preparation method thereof |
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