CN105294257A - Sustained-release mixed fertilizer and preparation method thereof - Google Patents
Sustained-release mixed fertilizer and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a sustained-release mixed fertilizer. The sustained-release mixed fertilizer comprises the following raw materials in parts by weight: 30 to 40 parts of urea, 15 to 25 parts of monopotassium phosphate, 10 to 20 parts of potassium silicate, 3 to 5 parts of magnesium sulfate, 8 to 10 parts of calcium chloride, 0.2 to 0.4 part of zinc sulfate, 0.3 to 0.5 part of copper nitrate, 0.5 to 1.5 parts of sodium borate, 0.1 to 0.3 part of ferric chloride, 0.1 to 0.3 part of manganese sulfate, 0.3 to 0.5 part of ammonium molybdate, 22 to 29 parts of sodium alginate, 40 to 50 parts of coating material, 5 to 10 parts of biochar, 10 to 15 parts of soybean meal, 10 to 15 parts of humic acid, 10 to 15 parts of straw, 8 to 12 parts of plant ash, and 5 to 7 parts of Gaotouwu powder. The invention also discloses a preparation method of the sustained-release mixed fertilizer. The sustained-release mixed fertilizer can control various elements to be released slowly, can improve the soil and can be used for sterilization and weed control, the coating material can be biologically degraded, and the environment can be protected.
Description
Technical field
The present invention relates to technical field of fertilizers, particularly relate to a kind of slowly-releasing mixed fertilizer and preparation method thereof.
Background technology
China is large agricultural country, the chemical fertilizers production state that the Ye Shi world today is maximum and country of consumption.Chemical fertilizer plays very important effect in increases in grain production.The subject matter existed in current fertilizer application is the fertilizer overwhelming majority used is common quick-acting chemical fertilizer, adds irrational measures of fertilizer, reduces utilization rate of fertilizer, causes the wasting of resources, environmental pollution, quality of agricultural product to decline.
Slow release fertilizer has a lot of advantage compared with conventional fertilizers, if reduce nutrient loss, increases substantially utilization rate of fertilizer etc., becomes the study hotspot of fertilizer.But at present in slow release fertilizer, Envelope type fertilizer ratio is maximum, and coated fertilizer mostly is the organic synthesis high molecular polymer of difficult degradation, can cause secondary pollution, so need to provide a kind of multi-functional and slow release fertilizer that can degrade.
Summary of the invention
Based on the technical problem that background technology exists, the present invention proposes a kind of slowly-releasing mixed fertilizer and preparation method thereof, the present invention can control each element slow releasing; improvement soil, keeps soil moisture, bactericidal and herbicidal; coated fertilizer is biodegradable, protection of the environment, easy to operate.
A kind of slowly-releasing mixed fertilizer that the present invention proposes, its raw material comprises by weight: urea 30-40 part, potassium primary phosphate 15-25 part, potassium silicate 10-20 part, magnesium sulfate 3-5 part, calcium chloride 8-10 part, zinc sulfate 0.2-0.4 part, cupric nitrate 0.3-0.5 part, Sodium Tetraborate 0.5-1.5 part, iron(ic) chloride 0.1-0.3 part, manganous sulfate 0.1-0.3 part, ammonium molybdate 0.3-0.5 part, sodium alginate 22-29 part, coated fertilizer 40-50 part, charcoal 5-10 part, dregs of beans 10-15 part, humic acid 10-15 part, stalk 10-15 part, plant ash 8-12 part, high head crow powder 5-7 part;
Wherein, the preparation method of coated fertilizer is: be added to the water by chitosan, and ultrasonic disperse is even, and add fumaric acid and aluminum chloride mixing, heat up, insulated and stirred, regulates pH, purifies and obtains intermediate material; Intermediate material is added to the water dissolving and obtains the intermediate material aqueous solution; Vinylformic acid, acrylamide, Potassium Persulphate, N hydroxymethyl acrylamide, humic acid are mixed, drop in the intermediate material aqueous solution, logical nitrogen, heat up, insulated and stirred, dry, pulverize, and sieves and obtains coated fertilizer.
Preferably, the preparation method of coated fertilizer is: be added to the water by chitosan, ultrasonic disperse is even, add fumaric acid and aluminum chloride mixing, be warming up to 70-80 DEG C, insulated and stirred 4-6h, pH=6.5-7.5 is regulated with sodium bicarbonate aqueous solution, add acetone sedimentation, filter, after washing with alcohol precipitation, precipitation is added in ethanol, be warming up to 60-80 DEG C, extract 40-50h, get ethanol vacuum-drying and obtain intermediate material; Intermediate material is added to the water dissolving and obtains the intermediate material aqueous solution; After vinylformic acid, acrylamide, Potassium Persulphate, N hydroxymethyl acrylamide, humic acid are mixed, drop in the intermediate material aqueous solution with the speed of 1-3ml/min, logical nitrogen 20-30min, be warming up to 60-70 DEG C, insulated and stirred 3-5h, dry, pulverize, cross 150-200 mesh sieve and obtain coated fertilizer.
Preferably, in coated fertilizer preparation, in intermediate material preparation process, the weight ratio of chitosan, water, fumaric acid, aluminum chloride is 1.5-2:100-120:3.3-4.4:6-8.
Preferably, in coated fertilizer preparation, acrylic acid degree of neutralization is 60-70wt%.
Preferably, in coated fertilizer preparation, the weight ratio of vinylformic acid, acrylamide, Potassium Persulphate, N hydroxymethyl acrylamide, humic acid and intermediate material is 50-55:25-30:0.5-1.5:0.04-0.05:9-11:7.3-8.4.
Preferably, its raw material comprises by weight: urea 32-38 part, potassium primary phosphate 17-23 part, potassium silicate 13-17 part, magnesium sulfate 3.5-4.5 part, calcium chloride 8.5-9.5 part, zinc sulfate 0.25-0.35 part, cupric nitrate 0.35-0.45 part, Sodium Tetraborate 0.8-1.2 part, iron(ic) chloride 0.15-0.25 part, manganous sulfate 0.15-0.25 part, ammonium molybdate 0.35-0.45 part, sodium alginate 24-26 part, coated fertilizer 43-47 part, charcoal 7-9 part, dregs of beans 11-13 part, humic acid 12-14 part, stalk 12-14 part, plant ash 9-10 part, high head crow powder 5.5-6.5 part.
The invention allows for the preparation method of above-mentioned slowly-releasing mixed fertilizer, comprise the steps:
S1, decomposed manure: charcoal, dregs of beans, humic acid, stalk, plant ash are pulverized, add water mixing, is warming up to 50-60 DEG C, insulation 10-15 days, dry, pulverize and obtain the fertilizer after becoming thoroughly decomposed;
S2, coating: urea, potassium primary phosphate, potassium silicate to be added in sodium alginate aqueous solution after mixing, be added drop-wise in calcium chloride water, constantly stir in dropping process, add magnesium sulfate, zinc sulfate, cupric nitrate, Sodium Tetraborate, iron(ic) chloride, manganous sulfate, ammonium molybdate mixing obtain intermediate particle; Evenly be wrapped in intermediate particle by coated fertilizer, be warming up to 60-70 DEG C, drying obtains mineral manure;
S3, mixing: by obtain in S1 become thoroughly decomposed after fertilizer, the mineral manure obtained in S2, the mixing of high head crow powder obtain slowly-releasing mixed fertilizer.
Preferably, in S1, in insulating process, every 3-4 days turns over amalgamation time.
Preferably, in S2, the massfraction of sodium alginate aqueous solution is 3-5wt%, and the massfraction of calcium chloride water is 5-7wt%.
Above-mentioned water is deionized water.
In the preparation method of above-mentioned coated fertilizer, regulate pH=6.5-7.5 with sodium bicarbonate aqueous solution, do not specify the massfraction of sodium bicarbonate aqueous solution herein; The effect of acetone, ethanol is purification intermediate material, does not specify its consumption, determines its consumption according to concrete operations; Intermediate material is added to the water dissolving and obtains the intermediate material aqueous solution, do not specify the consumption of water herein, determine its consumption according to concrete operations.
In above-mentioned S1, the effect of water is decomposed manure, does not specify its consumption, determines its consumption according to concrete operations.
The present invention selects chitosan and fumaric acid to carry out acylation reaction and obtains intermediate material, intermediate material water soluble, solve chitosan and be insoluble in water problem, intermediate material and vinylformic acid, acrylamide, humic acid carry out being obtained by reacting the coated fertilizer being grafted with intermediate material and humic acid under the effect of Potassium Persulphate, N hydroxymethyl acrylamide, greatly can increase water-absorbing-retaining effect of the present invention; Chitosan and humic acid can biological degradations, cooperatively interact, considerably increase the biodegradability of coated fertilizer, protection of the environment with the fertilizer after becoming thoroughly decomposed; Chitosan, fumaric acid all have germicidal action, and chitosan and fumaric acid carry out acylation reaction and obtain intermediate material, increase the bactericidal properties of chitosan, fumaric acid further, cooperatively interact, considerably increase bactericidal and herbicidal effect of the present invention with high head crow powder; Humic acid in coated fertilizer, N hydroxymethyl acrylamide have the effect of improvement soil, interact, jointly improve soil with the fertilizer after becoming thoroughly decomposed; Urea, potassium primary phosphate, potassium silicate are wrapped in center by sodium alginate and calcium chloride generation chelatropic reaction, after mixing with magnesium sulfate, zinc sulfate, cupric nitrate, Sodium Tetraborate, iron(ic) chloride, manganous sulfate, ammonium molybdate, at outer layer covers coated fertilizer, form double-layer sustained release film, the slow releasing of each element can well be controlled, thus reach that fertilizer makes full use of, the object of protection of the environment; Mineral manure and the fertilizer after becoming thoroughly decomposed cooperatively interact, for crop provides balanced nutrition; The present invention is convenient and simple for operation, is beneficial to suitability for industrialized production.
Embodiment
Below, by specific embodiment, technical scheme of the present invention is described in detail.
Embodiment 1
A kind of slowly-releasing mixed fertilizer, its raw material comprises by weight: 30 parts, urea, potassium primary phosphate 25 parts, potassium silicate 10 parts, 5 parts, magnesium sulfate, 8 parts, calcium chloride, 0.4 part, zinc sulfate, cupric nitrate 0.3 part, Sodium Tetraborate 1.5 parts, 0.1 part, iron(ic) chloride, manganous sulfate 0.3 part, ammonium molybdate 0.3 part, sodium alginate 29 parts, coated fertilizer 40 parts, charcoal 10 parts, dregs of beans 10 parts, humic acid 15 parts, stalk 10 parts, plant ash 12 parts, high head crow 5 parts, powder;
Wherein, the preparation method of coated fertilizer is: be added to the water by chitosan, ultrasonic disperse is even, add fumaric acid and aluminum chloride mixing, be warming up to 80 DEG C, insulated and stirred 4h, regulate pH=7.5 with sodium bicarbonate aqueous solution, add acetone sedimentation, filter, after washing with alcohol precipitation, precipitation is added in ethanol, be warming up to 60 DEG C, extract 50h, get ethanol vacuum-drying and obtain intermediate material, wherein, the weight ratio of chitosan, water, fumaric acid, aluminum chloride is 1.5:120:3.3:8; Intermediate material is added to the water dissolving and obtains the intermediate material aqueous solution; Be the vinylformic acid of 60wt% by degree of neutralization, after acrylamide, Potassium Persulphate, N hydroxymethyl acrylamide, humic acid mix, drop in the intermediate material aqueous solution with the speed of 3ml/min, logical nitrogen 20min, be warming up to 70 DEG C, insulated and stirred 3h, dry, pulverize, cross 200 mesh sieves and obtain coated fertilizer, wherein, the weight ratio of vinylformic acid, acrylamide, Potassium Persulphate, N hydroxymethyl acrylamide, humic acid and intermediate material is 50:30:0.5:0.05:9:8.4.
The preparation method of above-mentioned slowly-releasing mixed fertilizer, comprises the steps:
S1, decomposed manure: charcoal, dregs of beans, humic acid, stalk, plant ash are pulverized, add water mixing, is warming up to 50 DEG C, is incubated 15 days, dry, pulverize and obtain the fertilizer after becoming thoroughly decomposed, wherein, in insulating process, turn over amalgamation time for every 3 days;
S2, coating: urea, potassium primary phosphate, potassium silicate being added massfraction is in 5wt% sodium alginate aqueous solution after mixing, being added drop-wise to massfraction is in 5wt% calcium chloride water, constantly stir in dropping process, add magnesium sulfate, zinc sulfate, cupric nitrate, Sodium Tetraborate, iron(ic) chloride, manganous sulfate, ammonium molybdate mixing obtain intermediate particle; Evenly be wrapped in intermediate particle by coated fertilizer, be warming up to 70 DEG C, drying obtains mineral manure;
S3, mixing: by obtain in S1 become thoroughly decomposed after fertilizer, the mineral manure obtained in S2, the mixing of high head crow powder obtain slowly-releasing mixed fertilizer.
Embodiment 2
A kind of slowly-releasing mixed fertilizer, its raw material comprises by weight: 40 parts, urea, potassium primary phosphate 15 parts, potassium silicate 20 parts, 3 parts, magnesium sulfate, 10 parts, calcium chloride, 0.2 part, zinc sulfate, cupric nitrate 0.5 part, Sodium Tetraborate 0.5 part, 0.3 part, iron(ic) chloride, manganous sulfate 0.1 part, ammonium molybdate 0.5 part, sodium alginate 22 parts, coated fertilizer 50 parts, charcoal 5 parts, dregs of beans 15 parts, humic acid 10 parts, stalk 15 parts, plant ash 8 parts, high head crow 7 parts, powder;
Wherein, the preparation method of coated fertilizer is: be added to the water by chitosan, ultrasonic disperse is even, add fumaric acid and aluminum chloride mixing, be warming up to 70 DEG C, insulated and stirred 6h, regulate pH=6.5 with sodium bicarbonate aqueous solution, add acetone sedimentation, filter, after washing with alcohol precipitation, precipitation is added in ethanol, be warming up to 80 DEG C, extract 40h, get ethanol vacuum-drying and obtain intermediate material, wherein, the weight ratio of chitosan, water, fumaric acid, aluminum chloride is 2:100:4.4:6; Intermediate material is added to the water dissolving and obtains the intermediate material aqueous solution; Be the vinylformic acid of 70wt% by degree of neutralization, after acrylamide, Potassium Persulphate, N hydroxymethyl acrylamide, humic acid mix, drop in the intermediate material aqueous solution with the speed of 1ml/min, logical nitrogen 30min, be warming up to 60 DEG C, insulated and stirred 5h, dry, pulverize, cross 150 mesh sieves and obtain coated fertilizer, wherein, the weight ratio of vinylformic acid, acrylamide, Potassium Persulphate, N hydroxymethyl acrylamide, humic acid and intermediate material is 55:25:1.5:0.04:11:7.3.
The preparation method of above-mentioned slowly-releasing mixed fertilizer, comprises the steps:
S1, decomposed manure: charcoal, dregs of beans, humic acid, stalk, plant ash are pulverized, add water mixing, is warming up to 60 DEG C, is incubated 10 days, dry, pulverize and obtain the fertilizer after becoming thoroughly decomposed, wherein, in insulating process, turn over amalgamation time for every 4 days;
S2, coating: urea, potassium primary phosphate, potassium silicate being added massfraction is in 3wt% sodium alginate aqueous solution after mixing, being added drop-wise to massfraction is in 7wt% calcium chloride water, constantly stir in dropping process, add magnesium sulfate, zinc sulfate, cupric nitrate, Sodium Tetraborate, iron(ic) chloride, manganous sulfate, ammonium molybdate mixing obtain intermediate particle; Evenly be wrapped in intermediate particle by coated fertilizer, be warming up to 60 DEG C, drying obtains mineral manure;
S3, mixing: by obtain in S1 become thoroughly decomposed after fertilizer, the mineral manure obtained in S2, the mixing of high head crow powder obtain slowly-releasing mixed fertilizer.
Embodiment 3
A kind of slowly-releasing mixed fertilizer, its raw material comprises by weight: 32 parts, urea, potassium primary phosphate 23 parts, potassium silicate 13 parts, 4.5 parts, magnesium sulfate, 8.5 parts, calcium chloride, 0.35 part, zinc sulfate, cupric nitrate 0.35 part, Sodium Tetraborate 1.2 parts, 0.15 part, iron(ic) chloride, manganous sulfate 0.25 part, ammonium molybdate 0.35 part, sodium alginate 26 parts, coated fertilizer 43 parts, charcoal 9 parts, dregs of beans 11 parts, humic acid 14 parts, stalk 12 parts, plant ash 10 parts, high head crow 5.5 parts, powder;
Wherein, the preparation method of coated fertilizer is: be added to the water by chitosan, ultrasonic disperse is even, add fumaric acid and aluminum chloride mixing, be warming up to 77 DEG C, insulated and stirred 4.5h, regulate pH=7.2 with sodium bicarbonate aqueous solution, add acetone sedimentation, filter, after washing with alcohol precipitation, precipitation is added in ethanol, be warming up to 65 DEG C, extract 48h, get ethanol vacuum-drying and obtain intermediate material, wherein, the weight ratio of chitosan, water, fumaric acid, aluminum chloride is 1.6:115:3.7:7.5; Intermediate material is added to the water dissolving and obtains the intermediate material aqueous solution; Be the vinylformic acid of 63wt% by degree of neutralization, after acrylamide, Potassium Persulphate, N hydroxymethyl acrylamide, humic acid mix, drop in the intermediate material aqueous solution with the speed of 2.5ml/min, logical nitrogen 22min, be warming up to 67 DEG C, insulated and stirred 3.5h, dry, pulverize, cross 180 mesh sieves and obtain coated fertilizer, wherein, the weight ratio of vinylformic acid, acrylamide, Potassium Persulphate, N hydroxymethyl acrylamide, humic acid and intermediate material is 51:29:0.8:0.048:9.5:8.
The preparation method of above-mentioned slowly-releasing mixed fertilizer, comprises the steps:
S1, decomposed manure: charcoal, dregs of beans, humic acid, stalk, plant ash are pulverized, add water mixing, is warming up to 53 DEG C, is incubated 14 days, dry, pulverize and obtain the fertilizer after becoming thoroughly decomposed, wherein, in insulating process, turn over amalgamation time for every 3 days;
S2, coating: urea, potassium primary phosphate, potassium silicate being added massfraction is in 4.5wt% sodium alginate aqueous solution after mixing, being added drop-wise to massfraction is in 5.5wt% calcium chloride water, constantly stir in dropping process, add magnesium sulfate, zinc sulfate, cupric nitrate, Sodium Tetraborate, iron(ic) chloride, manganous sulfate, ammonium molybdate mixing obtain intermediate particle; Evenly be wrapped in intermediate particle by coated fertilizer, be warming up to 68 DEG C, drying obtains mineral manure;
S3, mixing: by obtain in S1 become thoroughly decomposed after fertilizer, the mineral manure obtained in S2, the mixing of high head crow powder obtain slowly-releasing mixed fertilizer.
Embodiment 4
A kind of slowly-releasing mixed fertilizer, its raw material comprises by weight: 38 parts, urea, potassium primary phosphate 17 parts, potassium silicate 17 parts, 3.5 parts, magnesium sulfate, 9.5 parts, calcium chloride, 0.25 part, zinc sulfate, cupric nitrate 0.45 part, Sodium Tetraborate 0.8 part, 0.25 part, iron(ic) chloride, manganous sulfate 0.15 part, ammonium molybdate 0.45 part, sodium alginate 24 parts, coated fertilizer 47 parts, charcoal 7 parts, dregs of beans 13 parts, humic acid 12 parts, stalk 14 parts, plant ash 9 parts, high head crow 6.5 parts, powder;
Wherein, the preparation method of coated fertilizer is: be added to the water by chitosan, ultrasonic disperse is even, add fumaric acid and aluminum chloride mixing, be warming up to 73 DEG C, insulated and stirred 5.5h, regulate pH=6.8 with sodium bicarbonate aqueous solution, add acetone sedimentation, filter, after washing with alcohol precipitation, precipitation is added in ethanol, be warming up to 75 DEG C, extract 42h, get ethanol vacuum-drying and obtain intermediate material, wherein, the weight ratio of chitosan, water, fumaric acid, aluminum chloride is 1.8:105:4:6.5; Intermediate material is added to the water dissolving and obtains the intermediate material aqueous solution; Be the vinylformic acid of 67wt% by degree of neutralization, after acrylamide, Potassium Persulphate, N hydroxymethyl acrylamide, humic acid mix, drop in the intermediate material aqueous solution with the speed of 1.5ml/min, logical nitrogen 28min, be warming up to 63 DEG C, insulated and stirred 4.5h, dry, pulverize, cross 160 mesh sieves and obtain coated fertilizer, wherein, the weight ratio of vinylformic acid, acrylamide, Potassium Persulphate, N hydroxymethyl acrylamide, humic acid and intermediate material is 53:27:1.2:0.042:10.5:7.7.
The preparation method of above-mentioned slowly-releasing mixed fertilizer, comprises the steps:
S1, decomposed manure: charcoal, dregs of beans, humic acid, stalk, plant ash are pulverized, add water mixing, is warming up to 57 DEG C, is incubated 12 days, dry, pulverize and obtain the fertilizer after becoming thoroughly decomposed, wherein, in insulating process, turn over amalgamation time for every 4 days;
S2, coating: urea, potassium primary phosphate, potassium silicate being added massfraction is in 3.5wt% sodium alginate aqueous solution after mixing, being added drop-wise to massfraction is in 6.5wt% calcium chloride water, constantly stir in dropping process, add magnesium sulfate, zinc sulfate, cupric nitrate, Sodium Tetraborate, iron(ic) chloride, manganous sulfate, ammonium molybdate mixing obtain intermediate particle; Evenly be wrapped in intermediate particle by coated fertilizer, be warming up to 62 DEG C, drying obtains mineral manure;
S3, mixing: by obtain in S1 become thoroughly decomposed after fertilizer, the mineral manure obtained in S2, the mixing of high head crow powder obtain slowly-releasing mixed fertilizer.
Embodiment 5
A kind of slowly-releasing mixed fertilizer, its raw material comprises by weight: 35 parts, urea, potassium primary phosphate 20 parts, potassium silicate 15 parts, 4 parts, magnesium sulfate, 9 parts, calcium chloride, 0.3 part, zinc sulfate, cupric nitrate 0.4 part, Sodium Tetraborate 1 part, 0.5 part, iron(ic) chloride, manganous sulfate 0.5 part, ammonium molybdate 0.4 part, sodium alginate 25 parts, coated fertilizer 45 parts, charcoal 8 parts, dregs of beans 12 parts, humic acid 13 parts, stalk 13 parts, plant ash 9.5 parts, high head crow 6 parts, powder;
Wherein, the preparation method of coated fertilizer is: be added to the water by chitosan, ultrasonic disperse is even, add fumaric acid and aluminum chloride mixing, be warming up to 75 DEG C, insulated and stirred 5h, regulate pH=7 with sodium bicarbonate aqueous solution, add acetone sedimentation, filter, after washing with alcohol precipitation, precipitation is added in ethanol, be warming up to 70 DEG C, extract 45h, get ethanol vacuum-drying and obtain intermediate material, wherein, the weight ratio of chitosan, water, fumaric acid, aluminum chloride is 1.7:110:3.8:7; Intermediate material is added to the water dissolving and obtains the intermediate material aqueous solution; Be the vinylformic acid of 65wt% by degree of neutralization, after acrylamide, Potassium Persulphate, N hydroxymethyl acrylamide, humic acid mix, drop in the intermediate material aqueous solution with the speed of 2ml/min, logical nitrogen 25min, be warming up to 65 DEG C, insulated and stirred 4h, dry, pulverize, cross 170 mesh sieves and obtain coated fertilizer, wherein, the weight ratio of vinylformic acid, acrylamide, Potassium Persulphate, N hydroxymethyl acrylamide, humic acid and intermediate material is 52:28:1:0.045:10:7.8.
The preparation method of above-mentioned slowly-releasing mixed fertilizer, comprises the steps:
S1, decomposed manure: charcoal, dregs of beans, humic acid, stalk, plant ash are pulverized, add water mixing, is warming up to 55 DEG C, is incubated 13 days, dry, pulverize and obtain the fertilizer after becoming thoroughly decomposed, wherein, in insulating process, turn over amalgamation time for every 3 days;
S2, coating: urea, potassium primary phosphate, potassium silicate being added massfraction is in 4wt% sodium alginate aqueous solution after mixing, being added drop-wise to massfraction is in 6wt% calcium chloride water, constantly stir in dropping process, add magnesium sulfate, zinc sulfate, cupric nitrate, Sodium Tetraborate, iron(ic) chloride, manganous sulfate, ammonium molybdate mixing obtain intermediate particle; Evenly be wrapped in intermediate particle by coated fertilizer, be warming up to 65 DEG C, drying obtains mineral manure;
S3, mixing: by obtain in S1 become thoroughly decomposed after fertilizer, the mineral manure obtained in S2, the mixing of high head crow powder obtain slowly-releasing mixed fertilizer.
The above; be only the present invention's preferably embodiment; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, all should be encompassed within protection scope of the present invention.
Claims (9)
1. a slowly-releasing mixed fertilizer, is characterized in that, its raw material comprises by weight: urea 30-40 part, potassium primary phosphate 15-25 part, potassium silicate 10-20 part, magnesium sulfate 3-5 part, calcium chloride 8-10 part, zinc sulfate 0.2-0.4 part, cupric nitrate 0.3-0.5 part, Sodium Tetraborate 0.5-1.5 part, iron(ic) chloride 0.1-0.3 part, manganous sulfate 0.1-0.3 part, ammonium molybdate 0.3-0.5 part, sodium alginate 22-29 part, coated fertilizer 40-50 part, charcoal 5-10 part, dregs of beans 10-15 part, humic acid 10-15 part, stalk 10-15 part, plant ash 8-12 part, high head crow powder 5-7 part;
Wherein, the preparation method of coated fertilizer is: be added to the water by chitosan, and ultrasonic disperse is even, and add fumaric acid and aluminum chloride mixing, heat up, insulated and stirred, regulates pH, purifies and obtains intermediate material; Intermediate material is added to the water dissolving and obtains the intermediate material aqueous solution; Vinylformic acid, acrylamide, Potassium Persulphate, N hydroxymethyl acrylamide, humic acid are mixed, drop in the intermediate material aqueous solution, logical nitrogen, heat up, insulated and stirred, dry, pulverize, and sieves and obtains coated fertilizer.
2. slowly-releasing mixed fertilizer according to claim 1, it is characterized in that, the preparation method of coated fertilizer is: be added to the water by chitosan, ultrasonic disperse is even, adds fumaric acid and aluminum chloride mixing, is warming up to 70-80 DEG C, insulated and stirred 4-6h, regulates pH=6.5-7.5 with sodium bicarbonate aqueous solution, adds acetone sedimentation, filter, after washing with alcohol precipitation, precipitation is added in ethanol, be warming up to 60-80 DEG C, extract 40-50h, get ethanol vacuum-drying and obtain intermediate material; Intermediate material is added to the water dissolving and obtains the intermediate material aqueous solution; After vinylformic acid, acrylamide, Potassium Persulphate, N hydroxymethyl acrylamide, humic acid are mixed, drop in the intermediate material aqueous solution with the speed of 1-3ml/min, logical nitrogen 20-30min, be warming up to 60-70 DEG C, insulated and stirred 3-5h, dry, pulverize, cross 150-200 mesh sieve and obtain coated fertilizer.
3. slowly-releasing mixed fertilizer according to claim 1 or 2, is characterized in that, in coated fertilizer preparation, in intermediate material preparation process, the weight ratio of chitosan, water, fumaric acid, aluminum chloride is 1.5-2:100-120:3.3-4.4:6-8.
4. slowly-releasing mixed fertilizer according to any one of claim 1-3, is characterized in that, in coated fertilizer preparation, acrylic acid degree of neutralization is 60-70wt%.
5. slowly-releasing mixed fertilizer according to any one of claim 1-4, it is characterized in that, in coated fertilizer preparation, the weight ratio of vinylformic acid, acrylamide, Potassium Persulphate, N hydroxymethyl acrylamide, humic acid and intermediate material is 50-55:25-30:0.5-1.5:0.04-0.05:9-11:7.3-8.4.
6. slowly-releasing mixed fertilizer according to any one of claim 1-5, it is characterized in that, its raw material comprises by weight: urea 32-38 part, potassium primary phosphate 17-23 part, potassium silicate 13-17 part, magnesium sulfate 3.5-4.5 part, calcium chloride 8.5-9.5 part, zinc sulfate 0.25-0.35 part, cupric nitrate 0.35-0.45 part, Sodium Tetraborate 0.8-1.2 part, iron(ic) chloride 0.15-0.25 part, manganous sulfate 0.15-0.25 part, ammonium molybdate 0.35-0.45 part, sodium alginate 24-26 part, coated fertilizer 43-47 part, charcoal 7-9 part, dregs of beans 11-13 part, humic acid 12-14 part, stalk 12-14 part, plant ash 9-10 part, high head crow powder 5.5-6.5 part.
7. the preparation method of slowly-releasing mixed fertilizer as described in any one of claim 1-6, is characterized in that, comprise the steps:
S1, decomposed manure: charcoal, dregs of beans, humic acid, stalk, plant ash are pulverized, add water mixing, is warming up to 50-60 DEG C, insulation 10-15 days, dry, pulverize and obtain the fertilizer after becoming thoroughly decomposed;
S2, coating: urea, potassium primary phosphate, potassium silicate to be added in sodium alginate aqueous solution after mixing, be added drop-wise in calcium chloride water, constantly stir in dropping process, add magnesium sulfate, zinc sulfate, cupric nitrate, Sodium Tetraborate, iron(ic) chloride, manganous sulfate, ammonium molybdate mixing obtain intermediate particle; Evenly be wrapped in intermediate particle by coated fertilizer, be warming up to 60-70 DEG C, drying obtains mineral manure;
S3, mixing: by obtain in S1 become thoroughly decomposed after fertilizer, the mineral manure obtained in S2, the mixing of high head crow powder obtain slowly-releasing mixed fertilizer.
8. the preparation method of slowly-releasing mixed fertilizer according to claim 7, is characterized in that, in S1, in insulating process, every 3-4 days turns over amalgamation time.
9. the preparation method of slowly-releasing mixed fertilizer according to claim 7 or 8, it is characterized in that, in S2, the massfraction of sodium alginate aqueous solution is 3-5wt%, and the massfraction of calcium chloride water is 5-7wt%.
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| CN105906458A (en) * | 2016-04-13 | 2016-08-31 | 青岛鲸灵海洋科技有限公司 | Soil improvement slow-release compound fertilizer and preparation method thereof |
| CN105967957A (en) * | 2016-02-25 | 2016-09-28 | 马鞍山市全润农业科技有限公司 | Potassium-increased modified-Chinese-chestnut-protein-coated slow-release fertilizer |
| CN106316689A (en) * | 2016-08-23 | 2017-01-11 | 安徽恒汇生态农业有限公司 | Slow release fertilizer special for herba dendrobii |
| CN106518565A (en) * | 2016-12-22 | 2017-03-22 | 凤台县余跃蔬菜专业合作社 | Chitosan sustained releasing microsphere fertilizer for effective prevention and treatment of tomato fruit cracking and preparing method thereof |
| CN106631447A (en) * | 2016-12-19 | 2017-05-10 | 芜湖市皖镁实业有限公司 | Fertilizer containing magnesium sulfate and preparation method thereof |
| CN106673820A (en) * | 2016-12-19 | 2017-05-17 | 芜湖市皖镁实业有限公司 | Controlled-release fertilizer containing magnesium sulfate and preparation method thereof |
| CN106748225A (en) * | 2016-12-30 | 2017-05-31 | 无为小熊生态农业科技有限公司 | A kind of rice seedling field fertilizer and preparation method thereof |
| CN106748219A (en) * | 2016-12-30 | 2017-05-31 | 无为小熊生态农业科技有限公司 | A kind of lotus rhizome compound fertilizer and preparation method thereof |
| CN106831125A (en) * | 2017-01-23 | 2017-06-13 | 广西南宁益土生物科技有限责任公司 | A kind of fertilizer synergist of improved soil |
| CN107032878A (en) * | 2017-03-31 | 2017-08-11 | 贵州农浩生物开发有限公司 | A kind of Chinese pennisetum artificial method for planting, plantation the fertilizer of retaining water and releasing nutrients slowly and preparation method thereof |
| CN107244995A (en) * | 2017-04-28 | 2017-10-13 | 天长市天兴园林绿化工程有限公司 | A kind of sand ground lawn fertilizer and preparation method thereof |
| CN107759318A (en) * | 2017-10-26 | 2018-03-06 | 北京源农炭肥技术有限公司 | Charcoal base manure and preparation method thereof |
| CN108863558A (en) * | 2018-07-30 | 2018-11-23 | 合肥仙之峰农业科技有限公司 | A kind of fruit vegetable plantation fertilizer and preparation method thereof |
| CN110330382A (en) * | 2019-07-25 | 2019-10-15 | 辽宁恒润农业有限公司 | A kind of preparation method of the Sorbus alnifloria crop base organic fertilizer of charcoal containing alga oligosaccharides |
| CN111990085A (en) * | 2020-09-04 | 2020-11-27 | 浙江茂源林业工程有限公司 | Method for grafting Chinese torreya to Chinese torreya tree, fertilizer and preparation method thereof |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105967957A (en) * | 2016-02-25 | 2016-09-28 | 马鞍山市全润农业科技有限公司 | Potassium-increased modified-Chinese-chestnut-protein-coated slow-release fertilizer |
| CN105906458A (en) * | 2016-04-13 | 2016-08-31 | 青岛鲸灵海洋科技有限公司 | Soil improvement slow-release compound fertilizer and preparation method thereof |
| CN106316689A (en) * | 2016-08-23 | 2017-01-11 | 安徽恒汇生态农业有限公司 | Slow release fertilizer special for herba dendrobii |
| CN106631447A (en) * | 2016-12-19 | 2017-05-10 | 芜湖市皖镁实业有限公司 | Fertilizer containing magnesium sulfate and preparation method thereof |
| CN106673820A (en) * | 2016-12-19 | 2017-05-17 | 芜湖市皖镁实业有限公司 | Controlled-release fertilizer containing magnesium sulfate and preparation method thereof |
| CN106518565A (en) * | 2016-12-22 | 2017-03-22 | 凤台县余跃蔬菜专业合作社 | Chitosan sustained releasing microsphere fertilizer for effective prevention and treatment of tomato fruit cracking and preparing method thereof |
| CN106748225A (en) * | 2016-12-30 | 2017-05-31 | 无为小熊生态农业科技有限公司 | A kind of rice seedling field fertilizer and preparation method thereof |
| CN106748219A (en) * | 2016-12-30 | 2017-05-31 | 无为小熊生态农业科技有限公司 | A kind of lotus rhizome compound fertilizer and preparation method thereof |
| CN106831125A (en) * | 2017-01-23 | 2017-06-13 | 广西南宁益土生物科技有限责任公司 | A kind of fertilizer synergist of improved soil |
| CN107032878A (en) * | 2017-03-31 | 2017-08-11 | 贵州农浩生物开发有限公司 | A kind of Chinese pennisetum artificial method for planting, plantation the fertilizer of retaining water and releasing nutrients slowly and preparation method thereof |
| CN107244995A (en) * | 2017-04-28 | 2017-10-13 | 天长市天兴园林绿化工程有限公司 | A kind of sand ground lawn fertilizer and preparation method thereof |
| CN107759318A (en) * | 2017-10-26 | 2018-03-06 | 北京源农炭肥技术有限公司 | Charcoal base manure and preparation method thereof |
| CN108863558A (en) * | 2018-07-30 | 2018-11-23 | 合肥仙之峰农业科技有限公司 | A kind of fruit vegetable plantation fertilizer and preparation method thereof |
| CN110330382A (en) * | 2019-07-25 | 2019-10-15 | 辽宁恒润农业有限公司 | A kind of preparation method of the Sorbus alnifloria crop base organic fertilizer of charcoal containing alga oligosaccharides |
| CN111990085A (en) * | 2020-09-04 | 2020-11-27 | 浙江茂源林业工程有限公司 | Method for grafting Chinese torreya to Chinese torreya tree, fertilizer and preparation method thereof |
| CN111990085B (en) * | 2020-09-04 | 2021-12-24 | 浙江茂源林业工程有限公司 | Method for grafting Chinese torreya to Chinese torreya tree, fertilizer and preparation method thereof |
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