CN103102216B - Coated fertilizer for inducing root growth and preparation method and application thereof - Google Patents
Coated fertilizer for inducing root growth and preparation method and application thereof Download PDFInfo
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Abstract
The invention discloses a coated fertilizer for inducing root growth and a preparation method and an application thereof, belonging to the field of fertilizer industry. The coated fertilizer comprises a fertilizer core and a coated layer, wherein the fertilizer core comprises organic matters, compound amino acid, humic acid materials, macroelements, secondary elements, microelements and an inorganic conditioner, the coated layer comprises a binder, a coated agent, a root system inducer, an alginate solution and a calcium ion solution. The preparation method comprises the following steps of smashing raw materials of the fertilizer core, after mixing, tabletting so as to form granulated fertilizer, spraying the binder, the coated agent mixed with the root system inducer, the alginate solution and the calcium ion solution on the granulated fertilizer sequentially so as to form a coated layer, and obtaining the coated fertilizer for inducing root growth after drying. On the one hand, the coated fertilizer can induce the root system to grow rapidly around the fertilizer due to the addition of the root system inducer, so that the fertilizer use ratio is improved; on the other hand, the fertilizer core is extruded and bonded by adopting a physical manner, so that the slow-release effect of the fertilizer core guarantees the fertilizer to be used efficiently.
Description
Technical field
The present invention relates to fertilizer industry field, particularly coated fertilizer of induction root growth and preparation method thereof.
Background technology
Chemical fertilizer is widely applied in agricultural, but conventional readily avaiable fertilizer is rapid because nutrient discharges, and wherein fertilizer loss rate, up to 30～65%, has improved cost on the one hand, has produced adverse influence on the other hand to ecotope.The pollution of area source that long-term application quick-acting fertilizer produces, cause Greenhouse effect and body eutrophication, cause the deterioration of the ecological environment.For alleviating these problems, need by improving the self performance of fertilizer, make fertilizer nutrient discharge emergency and help mutually, extend available fertilizer and utilize the time, thereby improve utilization rate of fertilizer.
For the g and D feature of crop, research and develop a kind of new-type fertilizer that can keep the lasting efficient provision of nutrient of some strength around root system, both can meet the growth of crop, do not need again whole soil layer fertilising; Can promote root system ramp, root system not produced and poisoned again, be one of important channel solving fertilizer pollution and fertilizer waste.
Slow release fertilizer is a kind of novel increment fertilizer, is also the important research direction of current fertilizer industry.Slow release fertilizer economizing on resources, all respects such as modern agriculture management system, all tool is of great significance.
Coated fertilizer is by delaying a kind of slow release fertilizer of mineral manure nutrient release rate with physics mode at instantly-soluble inorganic chemical fertilizer surface parcel one deck insoluble material.Coated fertilizer makes it to absorb basic synchronization with crop nutrition content by controlling the rate of release of nutrient, can greatly improve utilization rate of fertilizer, improves quality of agricultural product, and improvement soil, reduces environmental pollution.Current domestic complex fertilizer product is all readily avaiable fertilizer, and nutrient discharges fast, directly touches root system and easily burns seedling.Along with the development of agriculture production and the adjustment of the structure of agricultural production, need now a kind of reasonable price badly, can meet crop Fast Growth, can long-actingly discharge again, promote the fertilizer of root growth and improvement soil to solve above problem.
Organic-inorganic slow release fertilizer is widely used, Chinese patent (publication number: CN101913949A) slow release organic-inorganic mixed fertilizer and preparation method thereof for example, although relate to compressing tablet after organic-inorganic mixing of materials on the one hand, only can not perform to maximum by its sustained release performance of compressing tablet; The less demand that is difficult to meet crop growth of nutrient kind wherein on the one hand in addition.Chinese patent (publication number: CN101891544A) organic, organic and inorganic fertilizer of a kind of functional biological and preparation method thereof, Chinese patent (publication number: CN101519329A) a kind of organic and inorganic fertilizer and preparation method who improves senior middle school's nutrient content of soil, wherein all relate to the operations such as granulation, granulating working procedure is not only complicated, and produces a large amount of dust.
Root system is the vitals that plant absorbs nutrient and moisture from soil, and the quality of root growth and development is determining that overground part especially gathers in the crops the yield and quality of organ; Also determining absorption and the utilising efficiency of nutrient simultaneously.Therefore promote that root growth is the important content of crop early growth.The patent of invention of taking root about inducing plant is a lot, for example: Chinese patent (publication number: CN1062639A) root element and manufacture method thereof; Chinese patent (publication number: CN101270009A) a kind of rhizosphere regulate and control is fertile; Chinese patent (publication number: CN1699302A) fertilizer with release-controlled function for strengthening root and inhibiting growth, these patents all do not relate to root system inductor.
Summary of the invention
Primary and foremost purpose of the present invention is that the shortcoming that overcomes prior art, with not enough, provides a kind of coated fertilizer of inducing root growth.
Another object of the present invention is to provide the preparation method of the coated fertilizer of above-mentioned induction root growth.
A further object of the present invention is to provide the application of the coated fertilizer of above-mentioned induction root growth.
Object of the present invention is achieved through the following technical solutions:
The coated fertilizer of induction root growth, comprises fertile core and coating layer.
Described fertile core comprises following component by mass percentage: organic matter 0～15%, aminoacids complex 0～5%, humic acid substance 0～5%, macroelement 55～75%, moderate-element 15～20%, trace element 4～7%, inorganic conditioner 3%.
The fertile core of every 100 weight parts coating layer used comprises following component by weight: 10～20 parts of binding agents, 10～20 parts of coating agent, 1～2.5 part of root system inductor, 10～20 parts of alginate solutions, 5～10 parts of ionic calcium solns.
Preferably, the fertile core of every 100 weight parts coating layer used comprises the component by following weight part: 15 parts of binding agents, 15 parts of coating agent, 1.1～2.2 parts of root system inductors, 15 parts of alginate solutions, 10 parts of ionic calcium solns.
Described organic matter is preferably at least one in butt matter, dry peat, dry cake fertilizer, bone meal and molasses powder.
Described aminoacids complex is preferably compound amino acid powder more than aminoacids content 46wt%.
Described humic acid substance is preferably at least one in brown coal, weathered coal, Sodium salts humic acids, potassium humate, potassium fulvate and nitro humus acid.
Described macroelement is preferably at least one in urea, saltpetre, potassium sulfate, Repone K, potassium primary phosphate, monoammonium phosphate and diammonium phosphate.
Described moderate-element is preferably at least two kinds in calcium sulfate, calcium carbonate, nitrocalcite, calcium chloride, magnesium sulfate heptahydrate and magnesium nitrate.
Described trace element is preferably at least one in Zinc Sulphate Heptahydrate, borax, iron vitriol, manganese sulfate monohydrate and cupric sulfate pentahydrate.
Described inorganic conditioner is preferably talcum powder.
Described binding agent is preferably at least one the aqueous solution in Natvosol, carboxymethyl cellulose and polyvinyl alcohol, and its concentration is preferably 2～5wt%.
Described coating agent is preferably at least one in Mierocrystalline cellulose, starch, wilkinite and diatomite.
Described root system inductor is preferably at least one in sodium nitrophenolate, diethylamino ethanol caproate (DA-6), naphthylacetic acid and xanthohumic acid.
Described alginate solution is preferably sodium alginate, potassium alginate or modified alginates solution, and its concentration is preferably 5～10wt%.
Described ionic calcium soln is preferably saturated calcium chloride solution.
The preparation method of the coated fertilizer of above-mentioned induction root growth, comprises the steps:
(1) pulverize, mix: first organic matter, aminoacids complex, macroelement, moderate-element, trace element, humic acid substance and inorganic conditioner are mixed and dried, then pulverize, sieve, form pulvis.
(2) compressing tablet: pulvis is carried out to compressing tablet or first pulvis become to particle diameter with granulator granulation with tabletting machine is that the particle of 1～2mm carries out compressing tablet with tabletting machine again and forms granulated fertilizer.The granulated fertilizer forming after compressing tablet as shown in Figure 1.
(3) coatings: first binding agent is sprayed on to granulated fertilizer surface, forms tack coat, then the coating agent that is mixed with root system inductor is sprayed on to fertilizer surface, form coating layer.
(4) secondary coating: first alginate solution is sprayed on to the fertilizer surface of a coating, forms alginates coating layer, then spray ionic calcium soln, reaction forms coating layer.
(5) coating layer solidifies: the coated fertilizer that obtains inducing root growth after secondary coated fertilizer is dry.
The temperature of the oven dry described in step (1) is preferably below 70 ℃, is more preferably below 50 ℃.
Oven dry described in step (1) is preferably 50 ℃ and dries 30min.
The diameter that sieves described in step (1) is preferably 0.25～1mm.
The humidity of the Working environment of the compressing tablet described in step (2) is preferably 20～50%.
Compressing tablet described in step (2) is preferably: select suitable die size and punch die shape, pulvis is joined in the feeder of tabletting machine, adjust suitable pressure, loading level and feeder vibration number, carry out compressing tablet; Or compressing tablet will be carried out after pulvis granulation again.The punch die diameter of described die size is greater than 6mm; That described punch die is shaped as is cylindrical, elliptical cylinder-shape, spherical, oval spherical, truncated cone, avette and other shapes; In the length of described punch die shape, diameter, the minimum value of any one is at least 1mm; The type of described tabletting machine is preferably Singlepunchtabletpress, flower basket type tabletting machine, Rotarytabletpress or high speed tablet press.Described pressure is preferably more than 0.5 ton, and feeder vibration velocity is preferably below 60mm/s, and feeder vibration number is preferably 3～7 times.
Dry being preferably in 60 ℃ of following oven dry described in step (5).
The coated fertilizer of above-mentioned induction root growth mainly provides plant growth required nutrient, and its fertilization mode is preferably spreads manuer in holes or spreads fertilizer over the fields.
The present invention has following advantage and effect with respect to prior art:
(1) aspect fertilizer ratio: 1) according to the basic theory of Plant Nutrition, having prepared can be for crop provides necessary inorganic nutrients, and reasonable ratio, thereby meet to greatest extent the fertilizer of the needs of plant growth; Organic constituent in this fertilizer is mainly crop root growth, rhizosphere microorganisms of crops biological activity has been created good environment, and for improving physics, the chemical property of soil, reduce environmental pollution and created good condition, for slowing down the release of inorganic nutrients, provide good barrier simultaneously; 2) potassium fulvate being rich in belongs to low molecular mass humic acids, compared with humic acids, has stronger chemically reactive and physiologically active, can stimulate the growth of root growth and lateral root, can complexing trace element, reduce nutrient antagonism, improve utilization rate of fertilizer; The physico-chemical property of improvement soil, makes the physics and chemistry structure of soil be more suitable for the growth of crop; Can also strengthen soil microbial activities, promote crop photosynthesis, improve improving activity of root system, improve crops quality, reduce the pollution of objectionable impurities, thereby ensure food safety.
(2), aspect sustained release performance: 1) organic and inorganic fertilizer, through physical compaction, has good physical strength, on the one hand due to physical action, fertilizer is dissolved and discharge slowly; Fertilizer adopts organic-inorganic mixed pressuring plate on the other hand, and it plays the quick release that stops inorganic nutrients on space structure, guaranteed inorganic nutrients efficient utilization; 2) the present invention adopts film-coating technique twice, coated fertilizer used is Mierocrystalline cellulose, starch and the Lalgine of complete biodegradable and has wilkinite and the diatomite of improveing Soil structure, using this kind of fertilizer pollution-free to edatope, is a kind of real environmental type coated fertilizer.Coated fertilizer source is wide on the one hand, and material is easy to get, cheap, greatly reduces the production cost of coated fertilizer; In mould material, add a certain amount of root system inductor on the one hand in addition, not only make root find fast fertilizer, promote its growth, and its slow release effect can make root be coated on fertilizer surface raising utilization rate of fertilizer.
(3), aspect yield and quality: 1) the present invention can effectively improve crop yield and quality: xanthohumic acid and Lalgine can promote crop root growth, strengthen the anti-adversity ability of root system, for the crop later stage provides good root system basis; Aminoacids complex provides during plant growth amino acid whose demand, can strengthen the resistance of plant simultaneously; 2) fertilizer of the present invention has following beneficial effect: nutrient homogeneous, equilibrium, component science, can significantly improve utilization rate of fertilizer, promotes plant growth, strengthens resistance, improves many-sided effects such as crop yield and product quality.
(4) at technical elements: 1) the present invention has overcome excessive sticking head in compressing tablet process, the inhomogenous shortcoming of the lighter sample introduction of organic materials of causing of ratio due to organic nutrient; 2) the present invention adopts alginates to react the mechanism of film forming with calcium ion, directly on fertilizer surface, reacts film forming.
Accompanying drawing explanation
Fig. 1 is the granulated fertilizer figure after compressing tablet of the present invention.
Fig. 2 is the coated fertilizer figure of embodiment 1 preparation.
Fig. 3 adopts coated fertilizer that embodiment 1 the makes earth culture effect test figure on the green grass or young crops of Shanghai.
Fig. 4 adopts coated fertilizer that embodiment 1 the makes earth culture effect test figure on Italian romaine lettuce.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
Embodiment 1
The coated fertilizer of preparation induction root growth, feed composition is as follows:
The total batching of fertile core is 1000g: butt matter 50g, compound amino acid powder (aminoacids content >=46wt%) 50g, potassium fulvate 50g, molasses powder 50g, saltpetre 150g, potassium sulfate 100g, potassium primary phosphate 150g, urea 180g, calcium carbonate 50g, magnesium sulfate heptahydrate 100g, borax 20g, Zinc Sulphate Heptahydrate 20g, talcum powder 30g.
Coating layer comprises following component: carboxymethyl cellulose aqueous solution (2%wt) 150g, DA-62g, xanthohumic acid 10g, Mierocrystalline cellulose 150g, sodium alginate soln (10%wt) 150g, saturated calcium chloride solution 100g.
Preparation method is as follows:
(1) pulverize, mix: at butt matter, compound amino acid powder, saltpetre, potassium sulfate, potassium primary phosphate, urea, calcium carbonate, magnesium sulfate heptahydrate, borax, Zinc Sulphate Heptahydrate, potassium fulvate and talcum powder are mixed to 50 ℃, dry 30min, then in pulverizer, pulverize, cross 0.5mm sieve, form pulvis.
(2) compressing tablet: select punch die diameter 8mm, compressing tablet to be shaped as columniform TDP-1.5T tabletting machine, at ambient moisture, be under 45% condition, pulvis is joined in the boot-shaped feeder in tabletting machine, to adjust pressure be that 0.8 ton, loading level 7mm, feeder vibration velocity are 50mm/s, boot-shaped feeder vibration number 4 times, carry out compressing tablet.Its cylindrical tablet diameter is 8mm, high 4mm.
(3) coatings: the fertilizer pressing is added to the aqueous solution that first sprays carboxymethyl cellulose in granulating disc; make fertilizer in disk, turn to surface and form tack coat; spray again the Mierocrystalline cellulose that is mixed with DA-6 and xanthohumic acid; turn to Mierocrystalline cellulose and be coated on by coated fertilizer surface, form one deck coating layer.
(4) secondary coating: the fertilizer surface sprinkling sodium alginate aqueous solution toward a coating is extremely coated on Mierocrystalline cellulose completely; Finally spray ionic calcium soln and form coating layer with reaction.
(5) coating layer solidifies: secondary coated fertilizer is obtained inducing the coated fertilizer (as shown in Figure 2) of root growth in 60 ℃ of oven dry.
Embodiment 2
The coated fertilizer of preparation induction root growth, feed composition is as follows:
The total batching of fertile core is 1000g: butt matter 50g, compound amino acid powder (aminoacids content >=98wt%) 50g, potassium fulvate 50g, molasses powder 50g, potassium primary phosphate 50g, urea 500g, calcium sulfate 50g, magnesium sulfate heptahydrate 100g, borax 50g, Zinc Sulphate Heptahydrate 20g, talcum powder 30g.
Coating layer comprises following component: hydroxyethyl cellulose aqueous solution (5wt%) 150g, sodium nitrophenolate 1g, xanthohumic acid 10g, Mierocrystalline cellulose 150g, sodium alginate soln (5wt%) 150g, saturated calcium chloride solution 100g.
Preparation method is as follows:
(1) pulverize, mix: at butt matter, potassium primary phosphate, urea, calcium sulfate, magnesium sulfate heptahydrate, borax and Zinc Sulphate Heptahydrate, potassium fulvate, compound amino acid powder, molasses powder and talcum powder are mixed to 50 ℃, dry 30min, then in pulverizer, pulverize, cross 0.5mm sieve, form pulvis.
(2) compressing tablet: select punch die diameter 8mm, compressing tablet to be shaped as columniform TDP-1.5T tabletting machine, at ambient moisture, be under 45% condition, pulvis is joined in the boot-shaped feeder in tabletting machine, to adjust pressure be that 0.8 ton, loading level 5mm, feeder vibration velocity are 60mm/s, boot-shaped feeder vibration number 4 times, carries out compressing tablet.Its cylindrical tablet diameter is 8mm, high 3.5mm.
(3) coatings: the fertilizer pressing is added to the aqueous solution that first sprays Natvosol in granulating disc; make fertilizer in disk, turn to surface and form tack coat; spray again the Mierocrystalline cellulose that is mixed with sodium nitrophenolate and xanthohumic acid; turn to Mierocrystalline cellulose and be coated on by coated fertilizer surface, form one deck coating layer.
(4) secondary coating: the fertilizer surface sprinkling sodium alginate aqueous solution toward a coating is extremely coated on Mierocrystalline cellulose completely; Finally spray ionic calcium soln and form coating layer with reaction.
(5) coating layer solidifies: secondary coated fertilizer is obtained inducing the coated fertilizer of root growth in 45 ℃ of oven dry.
Embodiment 3
The coated fertilizer of preparation induction root growth, feed composition is as follows:
The total batching of fertile core is 1000g: butt matter 75g, compound amino acid powder (aminoacids content >=46wt%) 25g, potassium fulvate 25g, molasses powder 75g, saltpetre 200g, potassium primary phosphate 170g, urea 200g, calcium sulfate 60g, magnesium sulfate heptahydrate 100g, borax 20g, Zinc Sulphate Heptahydrate 20g, talcum powder 30g.
Coating layer comprises following component: polyvinyl alcohol water solution (3wt%) 200g, naphthylacetic acid 2g, xanthohumic acid 20g, wilkinite 200g, sodium alginate soln (8wt%) 200g, saturated calcium chloride solution 100g.
Preparation method is as follows:
(1) pulverize: at butt matter, saltpetre, potassium primary phosphate, urea, calcium sulfate, magnesium sulfate heptahydrate, borax, Zinc Sulphate Heptahydrate, potassium fulvate, molasses powder and talcum powder are mixed to 50 ℃, dry 30min, then in pulverizer, pulverize, cross 0.5mm sieve, form pulvis.
(2) compressing tablet: select punch die diameter 6mm, compressing tablet to be shaped as columniform TDP-1.5T tabletting machine, at ambient moisture, be under 50% condition, pulvis is joined in the boot-shaped feeder in tabletting machine, to adjust pressure be that 0.9 ton, loading level 5mm, feeder vibration velocity are 50mm/s, boot-shaped feeder vibration number 4 times, carries out compressing tablet.Its cylindrical tablet diameter is 6mm, high 3mm.
(3) coatings: the fertilizer pressing is added and first sprays polyvinyl alcohol water solution in granulating disc; make fertilizer in disk, turn to surface and form tack coat; spray again the wilkinite that is mixed with naphthylacetic acid and xanthohumic acid; turn to wilkinite and be coated on by coated fertilizer surface, form one deck coating layer.
(4) secondary coating: the fertilizer surface sprinkling sodium alginate aqueous solution toward a coating is extremely coated on wilkinite completely; Finally spray ionic calcium soln and form coating layer with reaction.
(5) coating layer solidifies: secondary coated fertilizer is obtained inducing the coated fertilizer of root growth in 50 ℃ of oven dry.
Embodiment 4
The coated fertilizer of preparation induction root growth, feed composition is as follows:
The total batching of fertile core is 1000g: primary ammonium phosphate 200g, dipotassium hydrogen phosphate 200g, Repone K 200g, urea 130g, calcium chloride 100g, magnesium sulfate heptahydrate 100g, borax 20g, Zinc Sulphate Heptahydrate 20g, talcum powder 30g.
Coating layer comprises following component: polyvinyl alcohol water solution (5wt%) 100g, naphthylacetic acid 2g, xanthohumic acid 20g, diatomite 100g, sodium alginate soln (10wt%) 100g, saturated calcium chloride solution 50g.
Preparation method is as follows:
(1) pulverize: at primary ammonium phosphate, dipotassium hydrogen phosphate, Repone K, urea, nitrocalcite, magnesium sulfate heptahydrate, borax, Zinc Sulphate Heptahydrate and talcum powder are mixed to 50 ℃, dry 30min, then in pulverizer, pulverize, cross 0.5mm sieve, form pulvis.
(3) compressing tablet: select punch die diameter 6mm, compressing tablet to be shaped as columniform DYP-1.5T tabletting machine, at ambient moisture, be under 50% condition, pulvis is joined in the boot-shaped feeder in tabletting machine, to adjust pressure be that 0.7 ton, loading level 5mm, feeder vibration velocity are 40mm/s, boot-shaped feeder vibration number 4 times, carries out compressing tablet.Its cylindrical tablet diameter is 6mm, high 3mm.
(4) coatings: the fertilizer pressing is added and first sprays polyvinyl alcohol water solution in granulating disc; make fertilizer in disk, turn to surface and form tack coat; spray again the diatomite that is mixed with naphthylacetic acid and xanthohumic acid; turn to diatomite and be coated on by coated fertilizer surface, form one deck coating layer.
(5) secondary coating: the fertilizer surface sprinkling sodium alginate aqueous solution toward a coating is extremely coated on diatomite completely; Finally spray ionic calcium soln and form coating layer with reaction.
(6) coating layer solidifies: secondary coated fertilizer is obtained inducing the coated fertilizer of root growth in 40 ℃ of oven dry.
The earth culture effect test of embodiment 5 coated fertilizers
The coated fertilizer of induction root growth prepared by the present invention the spread manuer in holes blue or green Plantula Brassicae chinensis in Shanghai and Italian romaine lettuce, test as follows:
This is tested in September, 2012 to November and carries out in Zi Huan institute of Guangzhou Guangdong Agricultural University Of South China solarium, utilize the coated fertilizer of embodiment 1 preparation, in plastic tub, carry out manure trial, every basin is planted 4 strains, every group is repeated four times, coated fertilizer adopts and spreads manuer in holes, and every strain is executed 3, in plantation, within 30 days, measures afterwards for examination crop quality, physical signs and output.The results are shown in Table 1:
The impact of table 1 coated fertilizer on Shanghai green grass or young crops and Italian lettuce quality
Note: data are mean value ± standard error; Reductibility Vc content 2,6 dichlorophenol indophenol titration measuring, soluble sugar content anthrone colorimetric method for determining, nitrate nitrogen content Whitfield's ointment colorimetric method for determining.
As shown in Table 1, compare with blank, Shanghai reductibility Vc, the soluble sugar content blue or green and Italian romaine lettuce of using coated fertilizer have increased respectively 38.9～43.9%, 0～48.3%, and the content of nitric nitrogen has declined 27.8～54.9% simultaneously.According to the GB19338-2003 < < Nitrate in Vegetable > > national standard of limiting the quantity of, the nitric nitrogen that coated fertilizer prepared by the present invention is processed be starkly lower than in standard, stipulate≤3000mg/kg FW, then in conjunction with Fig. 3 (contrast: blank; Tablet: coated fertilizer.) and Fig. 4 (contrast: blank; Tablet: coated fertilizer.) show to use coated fertilizer and can induce the generation of new root, stimulate the growth of root system and strengthen the vigor of root system, the most of nitric nitrogen absorbing can be completed to the conversion of amino acid, protein etc. in root system, thereby reduced the content of nitric nitrogen in overground part.
Above-described embodiment is preferably embodiment of the present invention; but embodiments of the present invention are not restricted to the described embodiments; other any do not deviate from change, the modification done under spirit of the present invention and principle, substitutes, combination, simplify; all should be equivalent substitute mode, within being included in protection scope of the present invention.
Claims (9)
1. the coated fertilizer of induction root growth, comprises fertile core and coating layer, it is characterized in that:
Described fertile core comprises following component by mass percentage: organic matter 0～15%, aminoacids complex 0～5%, humic acid substance 0～5%, macroelement 55～75%, moderate-element 15～20%, trace element 4～7%, inorganic conditioner 3%; Described organic matter is at least one in butt matter, dry peat, dry cake fertilizer, bone meal and molasses powder;
The fertile core of every 100 weight parts coating layer used comprises following component by weight: 10～20 parts of binding agents, 10～20 parts of coating agent, 1～2.5 part of root system inductor, 10～20 parts of alginate solutions, 5～10 parts of ionic calcium solns;
The coated fertilizer of described induction root growth prepares as follows:
(1) pulverize, mix: first organic matter, aminoacids complex, macroelement, moderate-element, trace element, humic acid substance and inorganic conditioner are mixed and dried, then pulverize, sieve, form pulvis;
(2) compressing tablet: pulvis is carried out to compressing tablet or first pulvis become to particle diameter with granulator granulation with tabletting machine is that the particle of 1～2mm carries out compressing tablet with tabletting machine again and forms granulated fertilizer;
(3) coatings: first binding agent is sprayed on to granulated fertilizer surface, forms tack coat, then the coating agent that is mixed with root system inductor is sprayed on to fertilizer surface, form coating layer;
(4) secondary coating: first alginate solution is sprayed on to the fertilizer surface of a coating, forms alginates coating layer, then spray ionic calcium soln, reaction forms coating layer;
(5) coating layer solidifies: the coated fertilizer that obtains inducing root growth after secondary coated fertilizer is dry.
2. the coated fertilizer of induction root growth according to claim 1, is characterized in that:
The fertile core of every 100 weight parts coating layer used comprises the component by following weight part: 15 parts of binding agents, 15 parts of coating agent, 1.1～2.2 parts of root system inductors, 15 parts of alginate solutions, 10 parts of ionic calcium solns.
3. the coated fertilizer of induction root growth according to claim 1, is characterized in that:
Described humic acid substance is at least one in brown coal, weathered coal, Sodium salts humic acids, potassium humate, potassium fulvate and nitro humus acid;
Described macroelement is at least one in urea, saltpetre, potassium sulfate, Repone K, potassium primary phosphate, monoammonium phosphate and diammonium phosphate;
Described moderate-element is at least two kinds in calcium sulfate, calcium carbonate, nitrocalcite, calcium chloride, magnesium sulfate heptahydrate and magnesium nitrate;
Described trace element is at least one in Zinc Sulphate Heptahydrate, borax, iron vitriol, manganese sulfate monohydrate and cupric sulfate pentahydrate;
Described inorganic conditioner is talcum powder.
4. the coated fertilizer of induction root growth according to claim 1, is characterized in that:
Described binding agent is at least one the aqueous solution in Natvosol, carboxymethyl cellulose and polyvinyl alcohol, and its concentration is 2～5wt%;
Described coating agent is at least one in Mierocrystalline cellulose, starch, wilkinite and diatomite;
Described root system inductor is at least one in sodium nitrophenolate, diethylamino ethanol caproate, naphthylacetic acid and xanthohumic acid;
Described alginate solution is sodium alginate, potassium alginate or modified alginates solution, and its concentration is 5～10wt%;
Described ionic calcium soln is saturated calcium chloride solution.
5. the coated fertilizer of induction root growth according to claim 1, is characterized in that:
The temperature of the oven dry described in step (1) is below 70 ℃;
The diameter that sieves described in step (1) is 0.25～1mm.
6. the coated fertilizer of induction root growth according to claim 1, is characterized in that:
Oven dry described in step (1) is 50 ℃ dries 30min.
7. the coated fertilizer of induction root growth according to claim 1, is characterized in that:
The humidity of the Working environment of the compressing tablet described in step (2) is 20%～50%;
Compressing tablet described in step (2) is: select suitable die size and punch die shape, pulvis is joined in the feeder of tabletting machine, adjust suitable pressure, loading level and feeder vibration number, carry out compressing tablet; Or compressing tablet will be carried out after pulvis granulation again; The punch die diameter of described die size is greater than 6mm; That described punch die is shaped as is cylindrical, elliptical cylinder-shape, spherical, oval spherical, truncated cone, avette and other shapes; In the length of described punch die shape, diameter, the minimum value of any one is at least 1mm; The type of described tabletting machine is Singlepunchtabletpress, flower basket type tabletting machine, Rotarytabletpress or high speed tablet press; Described pressure is greater than 0.5 ton, and feeder vibration velocity is below 60mm/s, and feeder vibration number is 3～7 times.
8. the coated fertilizer of induction root growth according to claim 1, is characterized in that:
Being dried as drying below in 60 ℃ described in step (5).
9. the application of the coated fertilizer of the induction root growth described in claim 1～4 any one in the required nutrient of plant growth is provided.
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| US11806689B2 (en) | 2016-02-08 | 2023-11-07 | Sabic Global Technologies B.V. | Method of making a fertilizer seed core |
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| US11806689B2 (en) | 2016-02-08 | 2023-11-07 | Sabic Global Technologies B.V. | Method of making a fertilizer seed core |
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