CN102424631A - Wrapped urea sustained-release fertilizer and preparation method thereof - Google Patents
Wrapped urea sustained-release fertilizer and preparation method thereof Download PDFInfo
- Publication number
- CN102424631A CN102424631A CN2011102648551A CN201110264855A CN102424631A CN 102424631 A CN102424631 A CN 102424631A CN 2011102648551 A CN2011102648551 A CN 2011102648551A CN 201110264855 A CN201110264855 A CN 201110264855A CN 102424631 A CN102424631 A CN 102424631A
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- China
- Prior art keywords
- fertilizer
- plant ash
- natural pond
- pond slag
- urea
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000003337 fertilizer Substances 0.000 title claims abstract description 65
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 title claims abstract description 61
- 239000004202 carbamide Substances 0.000 title claims abstract description 35
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- 238000013268 sustained release Methods 0.000 title abstract description 5
- 239000012730 sustained-release form Substances 0.000 title abstract description 5
- 239000000203 mixture Substances 0.000 claims abstract description 24
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 11
- 241000196324 Embryophyta Species 0.000 claims description 41
- 239000002893 slag Substances 0.000 claims description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- 239000003905 agrochemical Substances 0.000 claims description 10
- 239000011248 coating agent Substances 0.000 claims description 9
- 238000000576 coating method Methods 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 8
- 241000208818 Helianthus Species 0.000 claims description 5
- 235000003222 Helianthus annuus Nutrition 0.000 claims description 5
- 210000003608 fece Anatomy 0.000 claims description 5
- 238000007605 air drying Methods 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 239000003895 organic fertilizer Substances 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 2
- 244000144972 livestock Species 0.000 claims description 2
- 244000144977 poultry Species 0.000 claims description 2
- 238000002203 pretreatment Methods 0.000 claims description 2
- 238000012216 screening Methods 0.000 claims 1
- 238000003756 stirring Methods 0.000 claims 1
- 239000002689 soil Substances 0.000 abstract description 12
- 239000002994 raw material Substances 0.000 abstract description 8
- 239000002910 solid waste Substances 0.000 abstract description 4
- 238000000855 fermentation Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 231100000957 no side effect Toxicity 0.000 abstract description 2
- 241001465754 Metazoa Species 0.000 abstract 1
- 230000004520 agglutination Effects 0.000 abstract 1
- 229910000278 bentonite Inorganic materials 0.000 abstract 1
- 239000000440 bentonite Substances 0.000 abstract 1
- 230000004720 fertilization Effects 0.000 abstract 1
- 239000002956 ash Substances 0.000 description 29
- 235000013877 carbamide Nutrition 0.000 description 22
- 238000000034 method Methods 0.000 description 9
- 239000000126 substance Substances 0.000 description 8
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 description 8
- 235000015097 nutrients Nutrition 0.000 description 7
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 5
- 239000008187 granular material Substances 0.000 description 5
- 239000011591 potassium Substances 0.000 description 5
- 229910052700 potassium Inorganic materials 0.000 description 5
- 239000000843 powder Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000005469 granulation Methods 0.000 description 4
- 230000003179 granulation Effects 0.000 description 4
- 238000005303 weighing Methods 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 239000010871 livestock manure Substances 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical group [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 description 2
- 229910000387 ammonium dihydrogen phosphate Inorganic materials 0.000 description 2
- 229910052796 boron Inorganic materials 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000004151 fermentation Effects 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 239000004021 humic acid Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 2
- 235000019837 monoammonium phosphate Nutrition 0.000 description 2
- 239000006012 monoammonium phosphate Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 230000008635 plant growth Effects 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- 235000015320 potassium carbonate Nutrition 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000011573 trace mineral Substances 0.000 description 2
- 235000013619 trace mineral Nutrition 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 235000002918 Fraxinus excelsior Nutrition 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 1
- 239000004111 Potassium silicate Substances 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 241000209140 Triticum Species 0.000 description 1
- 235000021307 Triticum Nutrition 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- ZFXVRMSLJDYJCH-UHFFFAOYSA-N calcium magnesium Chemical compound [Mg].[Ca] ZFXVRMSLJDYJCH-UHFFFAOYSA-N 0.000 description 1
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 1
- 125000005587 carbonate group Chemical group 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 239000002734 clay mineral Substances 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009313 farming Methods 0.000 description 1
- 230000035558 fertility Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 235000019634 flavors Nutrition 0.000 description 1
- 239000003979 granulating agent Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000012010 growth Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 239000011785 micronutrient Substances 0.000 description 1
- 235000013369 micronutrients Nutrition 0.000 description 1
- 239000002366 mineral element Substances 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 235000021049 nutrient content Nutrition 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 229940072033 potash Drugs 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- NNHHDJVEYQHLHG-UHFFFAOYSA-N potassium silicate Chemical compound [K+].[K+].[O-][Si]([O-])=O NNHHDJVEYQHLHG-UHFFFAOYSA-N 0.000 description 1
- 229910052913 potassium silicate Inorganic materials 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 230000013278 single fertilization Effects 0.000 description 1
- 229910021647 smectite Inorganic materials 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 230000002522 swelling effect Effects 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 235000012222 talc Nutrition 0.000 description 1
- 239000002601 urease inhibitor Substances 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/40—Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse
Abstract
The invention discloses a wrapped urea sustained-release fertilizer and a preparation method thereof. According to the invention, rural organic solid waste rich in organic matters is adopted as a raw material; plant ash and an anaerobic fermentation product biogas residue are bonded with the bonding property of bentonite; the mixture is well mixed according to a certain ratio, and is used for wrapping urea, such that the wrapped sustained-release fertilizer is obtained. The fertilizer provided by the invention is advantaged in simple production method, and low cost. The materials are easy to obtain. The sustained-release fertilizer is especially suitable for rural family daily fertilization. With the fertilizer and the preparation method, the utilization efficiency of the fertilizer is improved; the fertilizer dosage and the economic investment of farmers are reduced; no side effect is brought to animals and growing environments thereof; and no soil agglutination is caused.
Description
Technical field
The present invention relates to a kind of coated slow released urea fertilizer and preparation method thereof, belong to the comprehensive utilization of resources technical field.
Background technology
Resistates after plant (draft and the xylophyta) burning is claimed plant ash.Plant ash fertilizer, nearly all contains in the plant ash so be the contained mineral element of all plants because of plant ash is the ashes behind the burning plants.The staple of plant ash is salt of wormwood (K
2CO
3), generally contain potassium 6-12%, wherein be water-soluble more than 90%, exist with carbonate form; Next is a phosphorus, generally contains 1.5-3%; Also contain micronutrient elements such as calcium, magnesium, silicon, sulphur and iron, manganese, copper, zinc, boron, molybdenum.The ash content of different plants, its nutrient content is different, with the potassium content of Sunflower Receptacle stalk for the highest.When waiting potassium amount to use plant ash, fertilizer efficiency is better than chemical potash fertilizer.So, it be a kind of wide material sources, with low cost, nutrient is complete, the tangible inorganic farm manure of fertilizer efficiency.
The natural pond slag contains outside abundant nitrogen, phosphorus, potassium and a large amount of element, also contains trace elements such as boron that plant growth is played an important role, copper, iron, manganese, zinc.Along with the sustainable development of the ecological agriculture, it is increasingly high that people are developed the agriculture enthusiasm of biogas ecology, and the purposes of natural pond slag also is exploited gradually.The natural pond slag contains humic acids 10-20%, organic 30-50%, full nitrogen 1.0-2.0%, phosphorous 0.4-0.6%, full potassium 0.6-1.2%, be a kind of late, the fertilizer that has both of speed.Contain more natural pond liquid in the slag of natural pond, its solid contents is below 20%, and wherein undecomposed raw material of part and newborn microbial cells apply meeting continuation fermentation behind the farmland, discharge nutriment in a fertilizer.Therefore, the natural pond slag in the comprehensive utilization process, have quick-acting, imitate two kinds of functions late, can do base manure with topdress, both can reduce the amount of application of chemical fertilizer, agricultural chemicals, reduce cost, can improve the yield and quality of farm crop effectively again.
Wilkinite is to be the clay mineral of staple with the smectite, and it has performances such as good cohesiveness, swelling property, adsorptivity, cationic exchange property.Wilkinite is agriculturally mainly as additive, fodder additives, tackiness agent, the zoosphere pad of soil improvement agent, mixed fertilizer native (going the flavor sterilization) etc.Because wilkinite itself contains a large amount of trace elements; And itself is nontoxic, particle is thinner, and it is done the granulation of fertilizer agent after through processing such as dehydration, allotment, grindings and is used for granulation of fertilizer, has that granulation speed is fast, balling ratio is high; Uniform particles; Characteristics such as smooth surface, granule strength height, fertilizer good water solubility, thus production cost practiced thrift, not only can build up fertility and can improve the soil.
Publication number is to disclose a kind of coated slow release fertilizer and preparation method thereof among the CN1074206.This method contains in the filling blend thing of coating and has the inorganic of adsorptivity or organic substance powder, and is adsorbed with water-soluble substances therein.Because the adsorptivity of filling blend thing makes superpolymer combine closely not interspace with weighting material; After fertilizer was used, the water-soluble substances dissolving caused uniform release aperture in the coating on the film; After fertilizer had discharged, coating can be broken into the powder below 200 orders when farming.Have stronger anti-damage ability before the slow release fertilizer that this method makes is used, can open release aperture equably when using, release rate is regulated accurately flexibly, is particularly suitable for the paddy field and uses.
Publication number is to disclose a kind of coated slow releasing fertilizer and preparation method thereof among the CN1772715A.The slow release fertilizer component is urea or NPK, urease inhibitors, magnesia unslacked, fused(calcium magnesium)phosphate, zinc oxide, humic acids and refining wilkinite in this method.Making method: each component is put into the granulation dish, and the spray aqueous sulfuric acid all is wrapped in the surface of urea granules with coated fertilizer, and cold wind is handled, and sieves, and promptly gets coated slow releasing fertilizer.The nutrient of this method fertilizer slowly discharges and is controlled, and single fertilization can satisfy plant growth, and improves the soil, keeps soil from packing together.
Publication number is to disclose a kind of slowly-releasing external parcel layer that is used for coated slow releasing fertilizer among the CN1396143A, and it is processed by slow-release material and sticker, and wherein the consumption of slow-release material is 50%-90%, and the sticker consumption is 10%-50%; Slow-release material is to process with talcum powder, terra alba and monoammonium phosphate powder, and its amount of talc is 10%-85%, and monoammonium phosphate powder consumption is 1%-20%; Sticker has 6 kinds of polyvinyl formal solution and Z 150PH potassium silicate aqueous solutions etc.
Present coated slow releasing fertilizer existing problems: the chemical fertilizer that wherein add (1) is more, and the slow-release fertilizer cost is raise, under the same conditions, and fertilizer efficiency and to the environment protection of soil with improve effect and be not so good as organic fertilizer; (2) add chemical substance in the slow-release fertilizer integument and can destroy the soil natural structure to a certain extent more at most, and cause secondary pollution easily.
Summary of the invention
The present invention has overcome deficiency of the prior art; Purpose provides a kind of coated slow-release fertilizer of carbamide; Utilize the abundant rural area organic solid waste of organic content to be raw material; Plant ash and anaerobically fermenting product natural pond slag are bonded together through bentonitic cohesiveness, proportionally mix, obtain coated slow releasing fertilizer with coated urea.This fertilizer applies after the farmland; In the natural moist environment of soil; Nutrient gets into the farmland through integument self hole, and meanwhile integument also slowly decomposes under the dissolving of soil moisture, and slow release effect is good, fertilizer efficiency is remarkable; Not only realized the organic solid useless resource regeneration in rural area, and crop growth has been played the effect of increasing both production and income.
Coated slow released urea fertilizer among the present invention; Form by fuse and coating; It is characterized in that integument is plant ash natural pond slag and bentonitic mixture, the volatile agrochemical of fertilizer fuse, agrochemical: plant ash natural pond slag: wilkinite (mass ratio)=20～23:21～21.5:20～21.
The fertilizer fuse is urea or other volatile agrochemicals among the present invention.
Plant ash is multiple plant ash mixture among the present invention, and wherein Sunflower Receptacle plant ash content is 50%, and Sunflower Receptacle plant ash is surplus ash behind the Sunflower Receptacle crop straw burning.
The natural pond slag is the anaeration in normal temperature tunning among the present invention, and the staple of fermentation raw material is feces of livestock and poultry and stalk, and natural pond slag water ratio is 80%-90%.
Another purpose of the present invention provides the coated method for preparing sustained-release urea fertilizer; Utilize the abundant rural area organic solid waste of organic content to be raw material; Plant ash and anaerobically fermenting product natural pond slag are mixed in proportion; With the bonding coated urea, obtain the coated slow releasing organic fertilizer through bentonitic tackyness.
The present invention accomplishes as follows:
(1) utilize kibbler that the pre-treatment of exsiccant plant ash is 60-120 purpose powder; Natural pond slag water ratio is 80-90%, filters with 60 eye mesh screens; To press the mixed of 20:1～1.5 even with filtering gained natural pond slag and plant ash; Wilkinite is added water be mixed to water ratio about 50%;
(2) getting particle diameter is the 2-4mm agrochemical; In the slag mixture of plant ash natural pond, add a spot of wilkinite granulating agent, with agrochemical, natural pond slag plant ash mixture, wilkinite three according to the quality of 20-23:21-21.5:20-21 than thorough mixing, natural pond slag plant ash mixture is evenly sticked together behind the urea granules surface; Wrap is placed in the drying place; After treating the moisture natural air drying, sieve and remove the foreign material that can not stick together, promptly get filmcoated type slow released urea organic fertilizer.
Advantage of the present invention is: 1) release rate of fertilizer is controlled, and uses common fertilizer relatively, has reduced fertilizer application frequency and dose, fundamentally practices thrift cost; 2) working method of the present invention is simple, cost is lower, can gather materials on the spot, and is particularly useful for the daily fertilising of rural households; 3) fertilizer utilization efficiency is improved, and practices thrift fertilizer amount and peasant economy input, and crop and growing environment thereof are had no side effect, and can not cause soil compaction; 4) compare with other coated fertilizer; Do not add any chemicals, raw material is a Rural areas ecosystem high-quality organic solid waste, plant ash and natural pond slag; The gained slow-release fertilizer is a green organic manure, and has realized that the utilization again and the resource of Rural areas refuse dispose again.
Embodiment
Embodiment 1
Take by weighing commercially available water ratio and be 10% wilkinite 200g, add water 160ml and mix, this wilkinite water ratio is 50%; According to the mass ratio of 20:1, the natural pond slag 200g and the 10g plant ash of water ratio 85% is mixed; The wilkinite that has prepared and natural pond slag plant ash mixture mixed be the coating raw material; Mass ratio according to urea, natural pond slag plant ash mixture, wilkinite three 20:21:20; Take by weighing particle diameter comparatively common on the 220.5g market at 2～4mm common urea, with its with the coating raw mix thorough mixing that prepared, mixture is evenly sticked together on the urea granules surface, parcel back finished product is placed in uncovered dry place; After treating the moisture natural air drying; Sieve and remove foreign material, promptly get the filmcoated type thiourea slow release fertilizer, the packing back properly stores.
Embodiment 2
Take by weighing commercially available water ratio and be 10% wilkinite 210g, add water 168ml, this wilkinite water ratio is 50%; According to the mass ratio of 20:1.5, be that 80% natural pond slag 200g and the plant ash of 15g mix with water ratio; The wilkinite that has prepared and natural pond slag plant ash mixture mixed be the coating raw material; According to the mass ratio of urea, natural pond slag plant ash mixture, wilkinite three 23:21.5:21, taking by weighing particle diameter comparatively common on the 230g market is 2～4mm common urea, with its with prepared coating raw mix thorough mixing; Mixture is evenly sticked together on the urea granules surface; Wrap is placed in uncovered dry place, treat the moisture natural air drying after, sieve and remove foreign material; Promptly get the filmcoated type thiourea slow release fertilizer, packing is with appropriate storage.
Embodiment 3: the slowly-releasing experiment of parcel property slow-release fertilizer of carbamide
Slow-release indoor experiment: under the normal temperature condition of no heating and pressurizing, former common urea all discharges dissolving only needs 9 minutes, and the whole strippings of nutrient need 52 hours in the filmcoated type thiourea slow release fertilizer among the present invention.
Field slowly-releasing experiment: nutrient releasing speed is relevant with moisture, temperature and the kind plant of soil; Experimental plot soil is the nature moisture condition; Filmcoated type thiourea slow release fertilizer nutrient release duration of the present invention is 120 days to 140 days, has delayed more than the twice time of releasing than former common urea nutrient.Compare with using former common urea, can make its output improve 10%～20% to wheat, corn single-dose application, utilization rate of fertilizer has improved 20%～50%.
Claims (7)
1. coated slow released urea fertilizer; Form by fuse and coating; It is characterized in that integument is plant ash natural pond slag and bentonitic mixture, the fertilizer fuse is volatile agrochemical, agrochemical: plant ash natural pond slag: wilkinite=20～23:21～21.5:20～21.
2. coated slow released urea fertilizer according to claim 1 is characterized in that volatile agrochemical is a urea.
3. coated slow released urea fertilizer according to claim 1 is characterized in that plant ash is multiple plant ash mixture, and wherein Sunflower Receptacle plant ash content is 50%.
4. coated slow released urea fertilizer according to claim 2, its characteristic natural pond slag are the anaeration in normal temperature tunning of feces of livestock and poultry and stalk.
5. coated slow released urea fertilizer according to claim 4 is characterized in that natural pond slag water ratio is 80%-90%.
6. coated slow released urea fertilizer according to claim 1 is characterized in that natural pond slag and the plant ash mixed by 20:1～1.5.
7. the preparation method of the described coated slow released urea of claim 1 fertilizer is characterized in that carrying out as follows:
(1) pre-treatment: with the plant ash crushing screening, obtain 60～120 order particles, with water ratio be 80%～90% natural pond slag sieve 60 order particles, and with natural pond slag and plant ash in the ratio of 20:1～1.5, mix; Wilkinite is added water stir, the wilkinite water ratio is about 50%;
(2) getting particle diameter is the 2-4mm agrochemical; By the mass ratio of 20～23:21～21.5:20～21 with itself and natural pond slag plant ash mixture, wilkinite three thorough mixing; Urea and natural pond slag plant ash mixture are sticked together together, place at the drying place, treat the moisture natural air drying after; Sieve and remove the foreign material that can not stick together, promptly get filmcoated type slow released urea organic fertilizer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103304321A (en) * | 2013-06-19 | 2013-09-18 | 中农舜天生态肥业有限公司 | Environmental-friendly inorganic composite membrane controlled-release fertilizer and preparation method thereof |
| CN106380314A (en) * | 2016-08-31 | 2017-02-08 | 天津市施易得肥料有限公司 | Insect-proofing charcoal rot slow-release urea |
| CN106747899A (en) * | 2016-11-11 | 2017-05-31 | 中国农业科学院农业资源与农业区划研究所 | A kind of film-coated and slow release fertilizer and preparation method thereof and making apparatus |
| CN111187111A (en) * | 2020-01-09 | 2020-05-22 | 东华大学 | Slow-release organic-inorganic coated compound fertilizer and preparation method thereof |
| CN111646842A (en) * | 2020-06-10 | 2020-09-11 | 黑龙江实力农业肥料科技有限公司 | Coated slow-release fertilizer and preparation method thereof |
| CN114456010A (en) * | 2022-03-15 | 2022-05-10 | 五原县沃丰生物科技有限责任公司 | Preparation method and production equipment of coated urea slow-release fertilizer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1907920A (en) * | 2006-08-03 | 2007-02-07 | 山东省农业科学院土壤肥料研究所 | Method of preparing NPK composite fertilizer using straw ash |
| CN101973803A (en) * | 2010-10-15 | 2011-02-16 | 湖南省中科农业有限公司 | High-efficiency multi-bacterial activity biogas residue biofertilizer and preparation method thereof |
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Patent Citations (2)
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| CN1907920A (en) * | 2006-08-03 | 2007-02-07 | 山东省农业科学院土壤肥料研究所 | Method of preparing NPK composite fertilizer using straw ash |
| CN101973803A (en) * | 2010-10-15 | 2011-02-16 | 湖南省中科农业有限公司 | High-efficiency multi-bacterial activity biogas residue biofertilizer and preparation method thereof |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103304321A (en) * | 2013-06-19 | 2013-09-18 | 中农舜天生态肥业有限公司 | Environmental-friendly inorganic composite membrane controlled-release fertilizer and preparation method thereof |
| CN103304321B (en) * | 2013-06-19 | 2015-04-08 | 中农舜天生态肥业有限公司 | Environmental-friendly inorganic composite membrane controlled-release fertilizer and preparation method thereof |
| CN106380314A (en) * | 2016-08-31 | 2017-02-08 | 天津市施易得肥料有限公司 | Insect-proofing charcoal rot slow-release urea |
| CN106747899A (en) * | 2016-11-11 | 2017-05-31 | 中国农业科学院农业资源与农业区划研究所 | A kind of film-coated and slow release fertilizer and preparation method thereof and making apparatus |
| CN111187111A (en) * | 2020-01-09 | 2020-05-22 | 东华大学 | Slow-release organic-inorganic coated compound fertilizer and preparation method thereof |
| CN111187111B (en) * | 2020-01-09 | 2021-08-20 | 东华大学 | Slow-release organic-inorganic coated compound fertilizer and preparation method thereof |
| CN111646842A (en) * | 2020-06-10 | 2020-09-11 | 黑龙江实力农业肥料科技有限公司 | Coated slow-release fertilizer and preparation method thereof |
| CN114456010A (en) * | 2022-03-15 | 2022-05-10 | 五原县沃丰生物科技有限责任公司 | Preparation method and production equipment of coated urea slow-release fertilizer |
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