CN105523832A - Special slow release water-soluble fertilizer for soybeans, and preparation method thereof - Google Patents
Special slow release water-soluble fertilizer for soybeans, and preparation method thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
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- C05B7/00—Fertilisers based essentially on alkali or ammonium orthophosphates
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Abstract
The invention relates to a special slow release water-soluble fertilizer for soybeans, and a preparation method thereof. Raw material components of the special slow release water-soluble fertilizer for soybeans comprise 140-150 parts of a urea formaldehyde fertilizer, 40-50 parts of diammonium phosphate, 60-70 parts of potassium dihydrogen phosphate, 50-60 parts of potassium nitrate, 10-15 parts of a chelated medium and trace element premix, 3-4 parts of sodium molybdate, 10-15 parts of soluble organic matters, 4-5 parts of a solubilizer and 3-5 parts of an amide hydrogel material. The invention also relates to the preparation method of the special water-soluble fertilizer for soybeans. Parts of nitrogen and phosphorus nutrients of the special slow release water-soluble fertilizer for soybeans have a slow release effect, and the special slow release water-soluble fertilizer for soybeans also contains a small amount of soluble organic matters, has comprehensive nutrition, meets soybean demands, accords with the nutrient absorption rule of a soybean generation period, can increase the yield of soybeans and improve the quality of the soybeans, and has improved fertilizer effect utilization rate.
Description
Technical field
The present invention relates to a kind of Special soybean controlled-release Water soluble fertilizer and preparation method thereof, in particular, the present invention relates to a kind of special Water soluble fertilizer of soybean with slow-releasing and preparation method thereof, belong to special Water soluble fertilizer field.
Background technology
Soybean nutritional is comprehensive, rich content, and wherein the content of protein is higher than pork 2 times, is 2.5 times of egg content; Soy proteinaceous amino acid composition and animal protein are similar to, wherein the ratio of amino acid relatively human body needs, so easy digested absorption.Containing the abundant inorganic salt such as calcium, phosphorus, magnesium, potassium in soybean, also containing trace elements such as copper, iron, zinc, iodine, molybdenums.China is the native place of soybean, but in recent years under the impact of foreign soybean, China's Soybean Industry has been bogged down in crisis.Improve China's structure of agricultural production, fertilizer practice, raising soybean yields and soybean quality have active effect to China's Soybean Industry.
Soybean wants high to the more general food crop of absorption demand of main nutrient elements, in the soybeans they grow cycle, prometaphase nutrients uptake amounts is high, the later stage is lower, the absorption peak of potassium and complete and absorb advance ratio nitrogen, phosphorus earlier, and N. P. K absorption ratio is about 1:0.4 ~ 0.5:0.5 ~ 0.75.To main nutrient elements uptake and accumulation peak period in the flower pod phase, account for 60% ~ 70% greatly.Soybean is nitrophilous crop, and its root system has the root nodule bacterium with its symbiosis, needs 40% ~ 60% of nitrogen total amount for it provides.The nutrient of soybean mature Stage Nutrition organ is high to the seed rate of transform, and nitrogen, phosphorus improve grain protein content, and potassium and zinc improve lipid content, and phosphorus, potassium, zinc, molybdenum and a small amount of nitrogenous fertilizer can improve nodulation and nitrogen fixation rate.
Soybean is that water requirement is large, stricter crop is required to moisture content, have coupling effect between liquid manure, each factors on soybean yield effect effect size order is: moisture > potash fertilizer > nitrogenous fertilizer > phosphate fertilizer, and potash fertilizer is negative effect.Nitrogen and phosphorus, nitrogen and water all have certain interaction, and nitrogen and potassium show as negative interaction.Moisture in the process of growth of soybean, depends on the effect of moisture more, because can compensate the deficiency of nutrient.Moisture is the extraneous controlling factor of photosynthetic rate variation pattern, is also to hinder the main extraneous factor of soybeans they grow, and excess moisture is strengthened due to anaerobic respiration, produces hydrogen peroxide, produces toxic action, be unfavorable for the growth in soybean later stage to the root system of soybean.Controlled Release Fertilizer can increase soybean Soil Microorganism quantity, improve feeder capability, thus improves utilization rate of fertilizer, reduces chemical fertilizer to the pollution of environment; Common urea is compared, and control release urea improves the plant height of soybean, chlorophyll content value and dry-matter accumulation; Improve the protein content of soybean, reduce lipid content, improve soybean quality.Release and release control fertilizer can need to nutrient the release rate controlling its nutrient according to crop different times, makes nutrients release and Crop synchronised, for soybean provides sufficient nutrient element whole breeding time, improves soybean yields.
Water soluble fertilizer is a kind of multielement compound fertilizer that can be dissolved in water completely, relative to non-fully water-soluble fertilizer and slowly-releasing kinds such as traditional calcium superphosphate, granulated compound fertilizers, due to its have instant, specific absorption is high, instant effect, without residue, use the remarkable advantages such as convenient, obtains swift and violent development.Especially when the environment protection be on the rise brought in the face of Greenhouse effect and water resources shortage; drip irrigation system, spray sprinkling irrigation etc. there is remarkable water saving, save the novel fertilizer application mode of fertile function and start to be widely applied, the person that the makes agricultural fertilizer basic change to the noegenesis of fertilizer.Water soluble composite fertilizer is as the main flow of current fertigation, although can economize on water, save fertilizer, save man-hour, but because Water soluble fertilizer forms by the water soluble fertilizer of different performance is composite, when fertilizer compatibility because of the difference of physics, chemical property, the fixing loss of edatope, causes fertilizer efficiency to reduce or loss.Such as, ammonium nitrogen easily volatilizees under alkaline environment, particularly can reach more than 50 degree in surface temperature, more easily causes the volatilization of ammonium nitrogen.Soluble phosphate can with soil in the calcium of solubilized form or iron ion form calcium phosphate precipitation, thus phosphorus is fixed, loses the meaning of Water soluble fertilizer.In addition, if the water-soluble rear plant of water soluble composite fertilizer can not absorb in time, the nutrients such as soluble potassium ion then can permeate the ground, and not only cause fertilizer efficiency to lose, and can pollute underground water.
It is special containing carbon element water-soluble fertilizer that patent 201410305499.7 discloses a kind of drip irrigation soybean, composed of the following components: water-soluble carbon fertilizer 82 ~ 86 weight part, and water-soluble carbon fertilizer is carbonated and nitrogen and water-soluble fertilizer; Water soluble phosphorous fertilizer 11 ~ 13 weight part; Water soluble potassic fertilizer 2 ~ 3 weight part; Water soluble trace elements fertilizer 1 ~ 2 weight part.Water soluble trace elements fertilizer is with being selected from solubility Zn salt, boric acid or polymerization boron, soluble M n salt, Dissolvable Fe salt, soluble Cu salt, soluble M o salt.This invention is mainly in order to solve the CO2 skewness that carbon containing fertilizer discharges after land for growing field crops is used.
Patent 201010560383.X discloses a kind of liquid composite foliar fertilizer special for soybean, take water as solvent, comprise big or middle, micronutrient element, beneficial element and auxiliary agent, macronutrient (N+P2O5+K2O) content is greater than 70g/L, its mass ratio N: P2O5: K2O=(2-3): 1: (4-6), middle amount nutritive element (Mg+S) content is greater than 20g/L, its mass ratio Mg: S=1: (3-4), micronutrient element (Zn+Mn+B+Mo+Fe+Cu) content is greater than 10g/L.In this patent, potassium element proportioning is too high, for Soybean leaf fertilizer.
Therefore, develop a kind of special Water soluble fertilizer meeting soybeans they grow cycle nutrient absorption law, and can solve the volatile loss of nitrogen, phosphoric is easily significant by the special Water soluble fertilizer with certain slow release effect of the problems such as soil fixing.
Summary of the invention
The present invention is directed to soybeans they grow cycle Nutrient Absorption rule, prometaphase nutrients uptake amounts is high, the later stage is lower, and N. P. K absorption ratio is about 1:0.4 ~ 0.5:0.5 ~ 0.75, is nitrophilous crop; Soybean is to the specific demand of micronutrient boron and molybdenum; And there is the situation such as negative interaction of orthogonal mutual effect, nitrogen, potassium in nitrogen, phosphoric in soybean plant strain; The unsolved nitrogen of common Water soluble fertilizer, phosphoric are volatile in addition or the problem of dead loss, provide a kind of Special soybean controlled-release Water soluble fertilizer and preparation method thereof.Add amides hydrogel material in fertilizer of the present invention and there is chelating adsorption, phosphate fertilizer is processed, reduce soil fixing phosphate fertilizer.The special water-soluble fertilizer nutrient content of the present invention is high, and nutritive element is complete, good water solubility, improves plant recovery of nutrient, meets soybeans they grow cycle Nutrient Absorption rule, soybean is had to the effect of increasing of quality and production, have great marketable value.
Technical scheme of the present invention is as follows:
A kind of Special soybean controlled-release Water soluble fertilizer, is characterized in that: containing urea-formaldehyde fertilizer and amides hydrogel material in this Water soluble fertilizer, by weight, feed composition comprises:
Urea-formaldehyde fertilizer 140 ~ 150 parts,
Diammonium phosphate 40 ~ 50 parts,
Potassium primary phosphate 60 ~ 70 parts,
Potassium sulfate 60 ~ 70 parts,
Chelating medium trace element pre-composition 10 ~ 15 parts,
Sodium orthomolybdate 3 ~ 4 parts,
Dissolved Organic Matter (DOM) 10 ~ 15 parts,
Solubilizing agent 4 ~ 5 parts,
Amides hydrogel material 3 ~ 5 parts;
Above component all in Powdered, wherein:
Described urea-formaldehyde fertilizer is short chain urea-formaldehyde condensation product, and N content is 35% ~ 40%, mainly containing methylolurea, MDU, dimethylene triurea; Described amides hydrogel material is the one in di-isopropyl oxalamide, xylyl oxalamide, laurylamide, with the non-chemically covalent bonds formation such as hydrogen bond, π-π, hydrophobic interaction hydrogel in water, to nutrient, there is absorption, sequestering action, in order to process diammonium phosphate, make it have slow-releasing.
Above-mentioned Special soybean controlled-release Water soluble fertilizer, described chelating medium trace element pre-composition, by weight, comprises EDTA chelated magnesium 70 ~ 80 parts, EDTA Chelated Manganese 20 ~ 30 parts, EDTA chelated zinc 30 ~ 40 parts, EDTA chelated copper 20 ~ 25 parts; Above-mentioned inner complex is sent into dispersing and mixing in dispersing mixer and within 20 ~ 30 minutes, obtain chelating medium trace element pre-composition.
Above-mentioned Special soybean controlled-release Water soluble fertilizer, described solubilizing agent is one or more in polyglycerol fatty acid ester, sodium lauryl sulphate, single Tryfac 5573, Monododecylphosphate potassium, in order to process urea-formaldehyde fertilizer.
Above-mentioned Special soybean controlled-release Water soluble fertilizer, described Dissolved Organic Matter (DOM) comprises water-soluble humic acid, xanthohumic acid, amino acid, citric acid, oxysuccinic acid, Whitfield's ointment.
The preparation method of above-mentioned Special soybean controlled-release Water soluble fertilizer, is characterized in that: the method comprises the following steps:
1) 3 ~ 5 parts of amides hydrogel materials and 30 ~ 40 parts of water are made into gelating soln stand-by; First 40 ~ 50 parts of diammonium phosphate are added in dispersing mixer, then add the gelating soln prepared, be uniformly mixed dispersion treatment 30 ~ 40 minutes, dry porphyrize, obtain gelation diammonium phosphate powder;
2) 140 ~ 150 parts of urea-formaldehyde fertilizers and 4 ~ 5 parts of solubilizing agent to be added in ball mill refinement dispersion treatment 20 ~ 30 minutes, Homogeneous phase mixing obtains high water-soluble urea-formaldehyde fertilizer.
3) the gelation diammonium phosphate 60 ~ 70 parts of potassium primary phosphates, 60 ~ 70 parts of potassium sulfate, 10 ~ 15 parts of chelating medium trace element pre-compositions, 3 ~ 4 parts of Sodium orthomolybdates, 10 ~ 15 parts of Dissolved Organic Matter (DOM) and step 1) obtained and step 2) the water-soluble urea-formaldehyde fertilizer of height that obtains adds high-speed mixer high speed and stirs, blending dispersion 30 ~ 40 minutes, obtained Special soybean controlled-release Water soluble fertilizer.
The invention provides the nutritive element proportioning that a kind of water miscible soybean is special, macroelement nitrogen, phosphorus ratio are about 1:0.4 ~ 0.5, and the urea-formaldehyde fertilizer wherein added is slow-releasing nitrogenous fertilizer, and processes with solubilizing agent, and it has water-soluble preferably; Phosphate fertilizer amides hydrogel is wherein adsorbed, reduces soil fixing phosphate fertilizer, improve the utilization ratio of phosphate fertilizer.Then and chelating medium trace element pre-composition fertile with other and Sodium orthomolybdate mix, and comprehensive nutrition, there will not be deficiency disease.Invention increases the utilization ratio of nitrogen, phosphoric, meet soybeans they grow cycle nutrient absorption law simultaneously.
The present invention's a kind of amides hydrogel material used is the one in di-isopropyl oxalamide, xylyl oxalamide, laurylamide, this kind of material has hydrophobic side and water-wet side simultaneously, hydrogel is formed by colloidal sol-gel conversion in water, hydrogel has adsorption to fertilizer nutrient, especially to phosphate fertilizer, the amido of water-wet side has sequestering action to metal simultaneously.Amides hydrogel is compared macromolecule hydrogel and is had good mobility, can not produce ill effect to Water soluble fertilizer.
The present invention has following outstanding feature and beneficial effect:
1, the present invention is directed to soybeans they grow cycle nutrient absorption law feature, with the addition of the urea-formaldehyde fertilizer with slow-releasing, and increase its solvability with solubilizing agent process; Process phosphate fertilizer with amides hydrogel, it fixes phosphoric by the effect of chelating, absorption, makes phosphate fertilizer be evenly distributed on around soybean root system, reduces soil fixing phosphoric.
2, the present invention with micro-molecular hydrogel material to phosphate fertilizer process, after using, phosphoric is fixed by amides hydrogel chelating, soybean absorbs it as required, substantially increase the positive interaction of nitrogen phosphorus in plant, and reduce the negative interaction of nitrogen potassium, facilitate soybean growth, improve the nitrogen-fixing efficiency of soybean root system root nodule bacterium, improve the accumulation of soybean nutrient.
3, after Water soluble fertilizer of the present invention is used, amides hydrogel rapid adsorption is distributed in around soybean root system, has the effect of fertilizer conservation water conservation, for soybean provides excellent liquid manure environment.Meanwhile, hydrogel can be the nutrient transmission path that root system provides stable, strengthens soybean to the absorption of nutrient.
4, in the present invention, nitrogenous fertilizer and phosphate fertilizer all have water-soluble and slow-releasing preferably, effectively overcome the volatile loss of nitrogen, and phosphorus element, easily by the shortcoming of soil fixing, improves the utilization ratio of nitrogen, phosphoric, can reduce Water soluble fertilizer application times simultaneously, reduce costs.
5, soybean provided by the invention special Water soluble fertilizer nutritive element is comprehensive, comprise macroelement, medium trace element and organic on a small quantity, nitrogen, phosphorus ratio are about 1:0.4 ~ 0.5, ratio is reasonable, meet soybeans they grow nutrient absorption law, can make that soybean plant strain growing way is strong, disease resistance is strong, soybean quality is good, high yield, improves soybean planting benefit.
6, Water soluble fertilizer production technique of the present invention is simple, and invest little, cost is low, has market using value.
Table one, each performance index of product of the present invention.
| Total nutrient (the water-soluble P of total N+ 2O 5+ K 2O） | Dissolved Organic Matter (DOM) | Water-insoluble | PH value | Moisture content | Proterties |
| 50.1%~50.3% | 1.74%~2.27% | ≤0.4% | 5~9 | ≤2% | Pressed powder |
In table one, Water soluble fertilizer total nutrient content >=50% of the present invention, water-insoluble≤0.4%, properties meets the requirement index of HG/T4365-2012 water soluble fertilizer.
Specific embodiments
Below by way of embodiment, the present invention is described in further detail, but this should be interpreted as scope of the present invention is only limitted to following example.When not departing from aforesaid method thought of the present invention, the various replacement made according to ordinary skill knowledge and customary means or change, all should be within the scope of the present invention.
embodiment 1
1) 3 parts of di-isopropyl oxalamide hydrogel materials and 30 parts of water are made into gelating soln stand-by; First 40 parts of diammonium phosphate are added in dispersing mixer, then add the gelating soln prepared, be uniformly mixed dispersion treatment 20 minutes, dry porphyrize, obtain gelation diammonium phosphate powder;
2) 140 parts of urea-formaldehyde fertilizers and 5 parts of solubilizing agent polyglycerol fatty acid esters to be added in ball mill refinement dispersion treatment 20 minutes, Homogeneous phase mixing obtains high water-soluble urea-formaldehyde fertilizer.
3) by 70 parts of EDTA chelated magnesiums, 30 parts of EDTA Chelated Manganeses, 30 parts of EDTA chelated zincs, 20 parts of EDTA chelated coppers, send into dispersing and mixing in dispersing mixer and within 20 minutes, obtain chelating medium trace element pre-composition.
4) by gelation diammonium phosphate powder, step 2 that 60 parts of potassium primary phosphates, 60 parts of potassium sulfate, 3 parts of Sodium orthomolybdates, 10 parts of Dissolved Organic Matter (DOM), step 1) obtain) the chelating medium trace element pre-composition that obtains of the water-soluble urea-formaldehyde fertilizer of height that obtains and 10 parts of step 3), add high-speed mixer high speed to stir, blending dispersion 30 ~ 40 minutes, obtained Special soybean controlled-release Water soluble fertilizer.
embodiment 2
1) 4 parts of di-isopropyl oxalamide hydrogel materials and 30 parts of water are made into gelating soln stand-by; First 40 parts of diammonium phosphate are added in dispersing mixer, then add the gelating soln prepared, be uniformly mixed dispersion treatment 20 minutes, dry porphyrize, obtain gelation di(2-ethylhexyl)phosphate powder;
2) 140 parts of urea-formaldehyde fertilizers and 5 parts of solubilizing agent sodium lauryl sulphate to be added in ball mill refinement dispersion treatment 30 minutes, Homogeneous phase mixing obtains high water-soluble urea-formaldehyde fertilizer.
3) by 70 parts of EDTA chelated magnesiums, 25 parts of EDTA Chelated Manganeses, 35 parts of EDTA chelated zincs, 20 parts of EDTA chelated coppers, send into dispersing and mixing in dispersing mixer and within 20 minutes, obtain chelating medium trace element pre-composition.
4) by gelation diammonium phosphate powder, step 2 that 60 parts of potassium primary phosphates, 60 parts of potassium sulfate, 3 parts of Sodium orthomolybdates, 12 parts of Dissolved Organic Matter (DOM), step 1) obtain) the chelating medium trace element pre-composition that obtains of the water-soluble urea-formaldehyde fertilizer of height that obtains and 12 parts of step 3), add high-speed mixer high speed to stir, blending dispersion 30 minutes, obtained Special soybean controlled-release Water soluble fertilizer.
embodiment 3
1) 4 parts of laurylamide hydrogel materials and 30 parts of water are made into gelating soln stand-by; First 45 parts of diammonium phosphate are added in dispersing mixer, then add the gelating soln prepared, be uniformly mixed dispersion treatment 30 minutes, dry porphyrize, obtain gelation diammonium phosphate powder;
2) 145 parts of urea-formaldehyde fertilizers and 5 parts of solubilizing agent list Tryfac 5573s to be added in ball mill refinement dispersion treatment 30 minutes, Homogeneous phase mixing obtains high water-soluble urea-formaldehyde fertilizer.
3) by 75 parts of EDTA chelated magnesiums, 25 parts of EDTA Chelated Manganeses, 35 parts of EDTA chelated zincs, 23 parts of EDTA chelated coppers, send into dispersing and mixing in dispersing mixer and within 30 minutes, obtain chelating medium trace element pre-composition.
4) by 155 parts of urea, gelation diammonium phosphate powder, step 2 that 65 parts of potassium primary phosphates, 65 parts of potassium sulfate, 4 parts of Sodium orthomolybdates, 13 parts of Dissolved Organic Matter (DOM), step 1) obtain) the chelating medium trace element pre-composition that obtains of the water-soluble urea-formaldehyde fertilizer of height that obtains and 13 parts of step 3), add high-speed mixer high speed to stir, blending dispersion 40 minutes, obtained Special soybean controlled-release Water soluble fertilizer.
embodiment 4
1) 5 parts of xylyl oxalamide hydrogel materials and 40 parts of water are made into gelating soln stand-by; First 50 parts of diammonium phosphate are added in dispersing mixer, then add the gelating soln prepared, be uniformly mixed dispersion treatment 30 minutes, dry porphyrize, obtain gelation diammonium phosphate powder;
2) 140 ~ 150 parts of urea-formaldehyde fertilizers and 4 ~ 5 parts of solubilizing agent Monododecylphosphate potassium to be added in ball mill refinement dispersion treatment 20 ~ 30 minutes, Homogeneous phase mixing obtains high water-soluble urea-formaldehyde fertilizer.
3) by 80 parts of EDTA chelated magnesiums, 30 parts of EDTA Chelated Manganeses, 40 parts of EDTA chelated zincs, 25 parts of EDTA chelated coppers, send into dispersing and mixing in dispersing mixer and within 30 minutes, obtain chelating medium trace element pre-composition.
4) by gelation diammonium phosphate powder, step 2 that 70 parts of potassium primary phosphates, 70 parts of potassium sulfate, 4 parts of Sodium orthomolybdates, 14 parts of Dissolved Organic Matter (DOM), step 1) obtain) the chelating medium trace element pre-composition that obtains of the water-soluble urea-formaldehyde fertilizer of height that obtains and 14 parts of step 3), add high-speed mixer high speed to stir, blending dispersion 40 minutes, obtained Special soybean controlled-release Water soluble fertilizer.
embodiment 5
1) 5 parts of laurylamide hydrogel materials and 40 parts of water are made into gelating soln stand-by; First 50 parts of diammonium phosphate are added in dispersing mixer, then add the gelating soln prepared, be uniformly mixed dispersion treatment 30 minutes, dry porphyrize, obtain gelation diammonium phosphate powder;
2) 150 parts of urea-formaldehyde fertilizers and 5 parts of solubilizing agent list Tryfac 5573s to be added in ball mill refinement dispersion treatment 30 minutes, Homogeneous phase mixing obtains high water-soluble urea-formaldehyde fertilizer.
3) by 80 parts of EDTA chelated magnesiums, 30 parts of EDTA Chelated Manganeses, 40 parts of EDTA chelated zincs, 25 parts of EDTA chelated coppers, send into dispersing and mixing in dispersing mixer and within 30 minutes, obtain chelating medium trace element pre-composition.
4) by gelation diammonium phosphate powder, step 2 that 70 parts of potassium primary phosphates, 70 parts of potassium sulfate, 4 parts of Sodium orthomolybdates, 15 parts of Dissolved Organic Matter (DOM), step 1) obtain) the chelating medium trace element pre-composition that obtains of the water-soluble urea-formaldehyde fertilizer of height that obtains and 15 parts of step 3), add high-speed mixer high speed to stir, blending dispersion 40 minutes, obtained Special soybean controlled-release Water soluble fertilizer.
Claims (5)
1. a Special soybean controlled-release Water soluble fertilizer, is characterized in that: containing urea-formaldehyde fertilizer and amides hydrogel material in this Water soluble fertilizer, by weight, feed composition comprises:
Urea-formaldehyde fertilizer 140 ~ 150 parts,
Diammonium phosphate 40 ~ 50 parts,
Potassium primary phosphate 60 ~ 70 parts,
Potassium sulfate 60 ~ 70 parts,
Chelating medium trace element pre-composition 10 ~ 15 parts,
Sodium orthomolybdate 3 ~ 4 parts,
Dissolved Organic Matter (DOM) 10 ~ 15 parts,
Solubilizing agent 4 ~ 5 parts,
Amides hydrogel material 3 ~ 5 parts;
Above component all in Powdered, wherein:
Described urea-formaldehyde fertilizer is short chain urea-formaldehyde condensation product, and N content is 35% ~ 40%, mainly containing methylolurea, MDU, dimethylene triurea; Described amides hydrogel material is the one in di-isopropyl oxalamide, xylyl oxalamide, laurylamide.
2. Special soybean controlled-release Water soluble fertilizer according to claim 1, is characterized in that: described chelating medium trace element pre-composition, by weight, comprise EDTA chelated magnesium 70 ~ 80 parts, EDTA Chelated Manganese 20 ~ 30 parts, EDTA chelated zinc 30 ~ 40 parts, EDTA chelated copper 20 ~ 25 parts; Above-mentioned inner complex is sent into dispersing and mixing in dispersing mixer and within 20 ~ 30 minutes, obtain chelating medium trace element pre-composition.
3. Special soybean controlled-release Water soluble fertilizer according to claim 1, it is characterized in that: described solubilizing agent is one or more in polyglycerol fatty acid ester, sodium lauryl sulphate, single Tryfac 5573, Monododecylphosphate potassium, in order to process urea-formaldehyde fertilizer.
4. Special soybean controlled-release Water soluble fertilizer according to claim 1, is characterized in that: described Dissolved Organic Matter (DOM) comprises water-soluble humic acid, xanthohumic acid, amino acid, citric acid, oxysuccinic acid, Whitfield's ointment.
5. the preparation method of the Special soybean controlled-release Water soluble fertilizer described in claim 1 ~ 4, is characterized in that: the method comprises the following steps:
1) 3 ~ 5 parts of amides hydrogel materials and 30 ~ 40 parts of water are made into gelating soln stand-by; First 40 ~ 50 parts of diammonium phosphate are added in dispersing mixer, then add the gelating soln prepared, be uniformly mixed dispersion treatment 30 ~ 40 minutes, dry porphyrize, obtain gelation diammonium phosphate powder;
2) 140 ~ 150 parts of urea-formaldehyde fertilizers and 4 ~ 5 parts of solubilizing agent to be added in ball mill refinement dispersion treatment 20 ~ 30 minutes, Homogeneous phase mixing obtains high water-soluble urea-formaldehyde fertilizer;
3) the gelation diammonium phosphate 60 ~ 70 parts of potassium primary phosphates, 60 ~ 70 parts of potassium sulfate, 10 ~ 15 parts of chelating medium trace element pre-compositions, 3 ~ 4 parts of Sodium orthomolybdates, 10 ~ 15 parts of Dissolved Organic Matter (DOM) and step 1) obtained and step 2) the water-soluble urea-formaldehyde fertilizer of height that obtains adds high-speed mixer high speed and stirs, blending dispersion 30 ~ 40 minutes, obtained Special soybean controlled-release Water soluble fertilizer.
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| CN106278681A (en) * | 2016-08-29 | 2017-01-04 | 贵阳开磷化肥有限公司 | A kind of Oryza sativa L. Special slow release fertilizer and preparation method thereof |
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Application publication date: 20160427 |