CN102503736A - Nitragin controlled release fertilizer special for alfalfa, and preparation and application of nitragin controlled release fertilizer - Google Patents
Nitragin controlled release fertilizer special for alfalfa, and preparation and application of nitragin controlled release fertilizer Download PDFInfo
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Abstract
The invention relates to a nitragin controlled release fertilizer special for alfalfa, and preparation and application of the nitragin controlled release fertilizer. The fertilizer comprises the following raw materials: urea coated nitragin composition, 5 percent humic acid coated urea, sulfur and high polymer coated urea, 5 percent recycling thermoplastic resin coated urea, 6 percent recycling thermoplastic resin coated urea, 8 percent recycling thermoplastic resin coated urea, 5 percent modified epoxy resin coated diammonium phosphate on a urea base coat, 5 percent modified epoxy resin coated potassium nitrate on the urea base coat, diammonium phosphate and potassium chloride. The invention also provides a method for preparing the controlled release fertilizer special for the alfalfa. According to the controlled release fertilizer and the preparation method, trace elements required by a nitragin, root nodule growth and nitrogen fixation are coated in a urea hull together, and coated nitrogen fertilizers in release periods of phosphorus and potassium fertilizers and different nutrients are allocated reasonably according to a fertilizer requiring rule of the alfalfa, so that the controlled release fertilizer special for the alfalfa, which has double functions of inoculation and fertilization, is formed. The controlled release fertilizer is valid for two years after being applied at a time, so that labor force can be saved, and the yield of the alfalfa can be increased.
Description
Technical field
It is fertile to the present invention relates to a kind of leguminous forage controlled release, particularly a kind of clover control released fertilizer special and preparation and application that contains nitragin.
Background technology
Clover (Medicago sativa L.) is the pulse family high quality forage, has higher forage grass quality, economic worth and ecological suitability, is one of of paramount importance herbage in the world.China is the country of protein feed resources shortage, and development quality alfalfa grass meal has become a new technological industry of exploitation protein feed resource.
CN102204439A (201110145340.X) discloses a kind of alfalfa seed pretreatment process that improves seedling vigor and saline and alkaline resistance; With silica gel that seed is at room temperature dry earlier; Make seed moisture content reduce to 4.59～7.09%; Seed after the ultra dry-cure seals with aluminium-foil paper, places the drying basin that fills oven dry silica gel, room temperature storage.Seed surpasses dry-cure, can improve the resistance of seed vitality and gained seedling, is simple, energy-conservation, the effective pretreating method for seed that prolongs the storage of seeds life-span.CN101904265A (201010233703.0) provides a kind of cultivating method of alfalfa in low-salt and-alkali cultivated land, when it has solved existing alfalfa kind method for planting and has been used for the saltings seedling rate low, yield poorly and problem that the clover wintering rate is low.This method alfalfa seedling rate is 80～90%, and wintering rate is 78～92%, is suitable in light saline and alkaline arable land plantation.The present invention quotes the background technology of above-mentioned two patent documents as ALFALFA PRODUCTION.
Because the deficiency or the kind of root nodule bacterium quantity are good inadequately in the soil, the inoculation root nodule bacterium are the important measures that increase the clover symbiotic nitrogen fixation, increase nitrogen nutrition, improve output and quality.Research shows that alfalfa inoculation root nodule bacterium can make the plant branch amount increase by 32%, and plant height increases by 16%, and grass yield increases by 28%, and also has the effect that continues raising the output in the 2nd year, the 3rd year.CN101194567A (CN200810055974.4) provides a kind of raising alfalfa seed output and method for quality, comprises the selection plot, chooses grass seeds, the clover kind is abolished dormancy handle; Root nodule bacterium are processed bacterium liquid, be sprayed onto on the seed, stir with alfalfa seed.
The root nodule bacterium of clover inoculation at present mainly are seed soaking or soak root, inoculate as yet with the form of fertilizer and do not appear in the newspapers.Clover is a perennial crop, and its planting area is mainly at the many less areas of people, lack of labor, extensive management.Therefore, be that the controlled release fertilizer of main purpose is particularly suitable for this crop to reduce fertilizer application frequency and fertilizer utilization efficiency.
Summary of the invention
To the deficiency of prior art, the present invention provides a kind of clover control released fertilizer special and preparation and application that contains nitragin.
Technical scheme of the present invention is following:
The special-purpose nitragin controlled release of a kind of clover is fertile, and raw materials quality part is following:
Said urea coated nitragin compsn prepares by following method: prepare the alfalfa Phylloxera fermented liquid by the prior art liquid fermenting earlier; Adsorb said fermented liquid with the turfy soil after the sterilization again and get nitragin, the mass ratio of said fermented liquid and turfy soil is 1: 3～4; Add 2～4% ferrous sulfate of gained nitragin quality and 1～2% ammonium molybdate, mix 40 ℃～50 ℃ granulations; Must mix the nitragin particle of molybdenum-iron; Be sprayed on this particle surface with fused urea at last, form urea coated layer, get urea coated nitragin compsn; Wherein urea coated layer accounts for 5～10wt% of urea coated nitragin composition quality.
Said 5% humic acid membrane wrapping urea is, is that the nuclear core is fertile with the granular urea, spray one layer binder outside nuclear core fertilizer; Spray the weathered coal of the air-dry pulverizing of one deck again; Solidify the back and repeat said process, reach sticker and account for 1% of the fertile quality of nuclear core, weathered coal accounts for 5% of the fertile quality of nuclear core.To be epoxy resin and triethylene tetramine be mixed and made into by 1: 0.10 mass ratio said sticker.Also can be by patent document CN100556866C (200810139610.4) disclosed " a kind of humic acid control-releasing fertilizer and preparation method thereof " preparation, the present invention quotes the full text of this patent document as prior art.Wherein, the preferred granular urea of nuclear core fertilizer urea, 2～3 millimeters of particle diameters.
It is to be nuclear core fertilizer with the granular urea that said sulphur adds the high molecular polymer coated carbamide, and spraying inner cladding sulphur film sprays the surrounding layer polymer membrane again and makes earlier; Wherein, It is 20% that inner cladding sulphur mould material accounts for nuclear core fertilizer quality per-cent; The mass percent that polymer membrane accounts for nuclear core fertilizer is 3%, and is preferred, high polymer film-coated dose of mixing that is novolac epoxy and triethylene tetramine with 9: 1 mass ratioes.The preparation method is referring to CN1246265C (200410024050.X) " is the preparation method of the high polymer film-coated controlled release fertilizer of undercoat with sulphur ", and the present invention quotes the full text of this patent document as prior art.Wherein, the preferred granular urea of nuclear core fertilizer urea, 2～3 millimeters of particle diameters.
Described 5% reclaims thermoplastic resin membrane wrapping urea, 6% reclaims thermoplastic resin membrane wrapping urea, 8% to reclaim thermoplastic resin membrane wrapping urea is respectively to account for the recovery waste thermoplastic resin coating agent of examining core fertilizer quality 5%, 6%, 8% in the outer spraying of granular urea nuclear core fertilizer to make.The preparation method is referring to CN 1257136C (200410035783.3) " is the working method of the film-coated controlled release fertilizer of degradable membrane to reclaim thermoplastic resin " embodiment 1-4.
Described urea undercoat 5% modified epoxy resin integument diammonium phosphate is that elder generation's spraying inner cladding urea sprays the agent of surrounding layer modified epoxy resin integument again and makes outside nuclear core fertiliser granulates diammonium phosphate.Inner cladding urea accounts for the 4-6% of nuclear core fertilizer quality, and the surrounding layer modified epoxy accounts for 5% of nuclear core fertilizer quality.Described urea undercoat 5% modified epoxy resin integument saltpetre is that elder generation's spraying inner cladding urea sprays the agent of surrounding layer modified epoxy resin integument again and makes outside nuclear core fertiliser granulates saltpetre.Inner cladding urea accounts for the 4-6% of nuclear core fertilizer quality, and the surrounding layer modified epoxy accounts for 5% of nuclear core fertilizer quality.Wherein, Preferably; Said modified epoxy resin integument agent prepares by following method: epoxy resin E-44 and polyurethane PU R are mixed and made into modified epoxy with 9: 1 mass ratioes, add 10wt% solidifying agent, 15wt% thinner and 1wt% wilkinite again and be mixed and made into.Wherein said solidifying agent, thinner are selected special preferred consolidation agent T-593, thinner benzyl glycidyl ether by this area is conventional.The preparation method is referring to CN 1246264C (200410024049.7) " is the modified epoxy resin integument release and release control fertilizer of undercoat with spraying urea ".
More than the fertile raw material of various controlled releases Shandong Kingenta Bio-engineering Stock Co., Ltd. all have to produce and sell, carry out composite after can directly buying.Said diammonium phosphate, Repone K, commercially available prod, 2～4 millimeters of particle diameters.
According to the present invention, preferred, the special-purpose nitragin controlled release of clover is fertile, and raw materials quality part is following:
The fertile preparation method of the special-purpose nitragin controlled release of clover of the present invention, step is following:
(1) urea coated nitragin preparation of compositions:
A, prepare the root nodule bacterium fermented liquid by existing liquid fermentation technology, contain root nodule bacterium viable count 3 * 10 in the fermented liquid with Sinorhizobium meliloti (Sinorhizobium meliloti) bacterial classification or rhizobium melioti (Rhizobium meliloti) bacterial classification
8Individual/ml-5 * 10
8Individual/ml.
B, by quality than fermented liquid: the turfy soil after turfy soil=1: 3～4 usefulness sterilization adsorbs into solid mixture with fermented liquid.
C, press mass ratio the ammonium molybdate of 2～4% ferrous sulfate and 1～2% is added in the mixture of step B preparation, mix.
D, under 40 ℃～50 ℃ conditions, utilize disk or cylinder to cause round shaped grain in the mixture of step C preparation, 2～4 millimeters of particle diameters, water cut 25～30wt% must mix the nitragin particle of molybdenum-iron;
E, urea melting is become urea liquid, with the form of atomizing urea liquid is sprayed on the nitragin particle of mixing molybdenum-iron that rotates, promptly get urea coated nitragin compsn after the cooling, urea quality accounts for 5～10% of the nitragin granular mass of mixing molybdenum-iron.
(2) urea coated nitragin compsn, 5% humic acid membrane wrapping urea, sulphur are added high molecular polymer coated carbamide, 5% and reclaim thermoplastic resin membrane wrapping urea, 6% and reclaim thermoplastic resin membrane wrapping urea, 8% and reclaim thermoplastic resin membrane wrapping urea, urea undercoat 5% modified epoxy resin integument diammonium phosphate, urea undercoat 5% modified epoxy resin integument saltpetre, diammonium phosphate, Repone K and put into stirrer together by proportioning and stirred 5～8 minutes, fully mixing promptly gets.Then the fertilizer that mixes is measured, packs.
In the aforesaid method; The used root nodule bacterium bacterial classification of preparation root nodule bacterium fermented liquid is clover inoculation Sinorhizobium meliloti (Sinorhizobium meliloti) or a rhizobium melioti (Rhizobium meliloti) commonly used in the prior art among step (1) A; Can on clover, all can use by the bacterial strain of dross; Serve as preferred wherein with the wide spectrum bacterial strain; For example Sinorhizobium meliloti (Sinorhizobium meliloti) ACCC17674, ACCC17675, ACCC17665, rhizobium melioti (Rhizobium meliloti) 17674CGMCCNo.1422 (CN1766090A), market is on sale.Further preferred Sinorhizobium meliloti ACCC17665.
The present invention contains the application of the clover special-purpose control-release fertilizer of nitragin, and utilization is sowed, applied fertilizer when clover is sowed, and all-in-one is disposable to be used as base manure, and fertilising is with below seed or a side, overhead 10～13 centimetres of the degree of depth.Fertilizer amount, folding synthetic nitrogen, phosphorus, potassium total amount, 40～60 kilograms every mu.The fertilizer validity period is 2 years, needn't topdress in 2 years.
The kind that clover special-purpose control-release fertilizer of the present invention is suitable for is extensive, and preferred alfalfa variety is No. 3, grassland, No. 1, middle lucerne, Baoding clover, A Ergangjin, American Pastoral, Huaiyin clover, golden clover or U.S. clover king.Especially preferably be suitable for No. 3, grassland, No. 1, middle lucerne.
The present invention is wrapped in nitragin, root nodule growth and the needed trace elements iron of fixed nitrogen and molybdenum in the urea shell together; And, form clover special-purpose control-release fertilizer with inoculation and fertilising dual-use function according to the coating nitrogenous fertilizer of regulation of fertilizer requirement reasonable disposition phosphorus, potash fertilizer and the Different Nutrients release period of clover.Fertilizer applied once of the present invention, validity period can reach 2 years.Through field experiment, obtained good effect.Excellent results of the present invention is following:
1, applies fertilizer, inoculates disposable completion
The clover special-purpose control-release fertilizer that the present invention contains root nodule bacterium cooperatively interacts root nodule bacterium and fertilizer, applies fertilizer, inoculates disposable completion, saving of labor, laborsaving, and root nodule bacterium are directly executed at the main root region soil of clover, improve inoculation efficient, increase alfalfa output.
2, root nodule bacterium are wrapped, and reduce Effect of Environmental
Root nodule bacterium are the thalline of living, and its activity is affected by environment easily, and like temperature, illumination etc., root nodule bacterium are wrapped in the fertilizer of the present invention, can reduce Effect of Environmental, prolong working lipe.
3, controlled release nitrogenous fertilizer can reduce the influence to nodule nitrogen fixation
Nitrogenous fertilizer in the fertilizer of the present invention mainly is controlled release nitrogenous fertilizer; Their nitrogen nutrient slowly discharges; Promptly can supplementary schedule solely lean on fixedly nitrogen deficiency of root nodule, can avoid again increasing the influence to the nodule nitrogen fixation effect suddenly behind the nitrogen application, both coordinate to supply clover nitrogen needs.
Embodiment
Below in conjunction with embodiment the present invention is further specified, but be not limited thereto.Raw material consumption umber among the embodiment is mass parts, and all per-cents are mass percent.Root nodule bacterium bacterial classification used among the embodiment is a Sinorhizobium meliloti, culture presevation numbers 17665, and Chinese agriculture microbial strains preservation administrative center buys, and also claims ACCC17665.Turfy soil: sea, Jilin farsighted turfy soil development company, organic content is greater than 70wt%.
5% humic acid membrane wrapping urea is to be that the nuclear core is fertile with the granular urea; Spray one layer binder outside nuclear core fertilizer sprays the weathered coal of the air-dry pulverizing of one deck again, solidifies the back and repeats said process; Reach sticker and account for 1% of the fertile quality of nuclear core, weathered coal accounts for 5% of the fertile quality of nuclear core.To be epoxy resin and triethylene tetramine be mixed and made into by 1: 0.10 mass ratio said sticker.Shandong Kingenta Bio-engineering Stock Co., Ltd. is on sale.
It is to be nuclear core fertilizer with the granular urea that sulphur adds the high molecular polymer coated carbamide, and spraying inner cladding sulphur film sprays the surrounding layer polymer membrane again and makes earlier; Wherein, it is 20% that inner cladding sulphur mould material accounts for nuclear core fertilizer quality per-cent, and the mass percent that polymer membrane accounts for nuclear core fertilizer is 3%, high polymer film-coated dose of mixing that is novolac epoxy and triethylene tetramine with 9: 1 mass ratioes.2～3 millimeters of nuclear core fertilizer urea particle diameters.Shandong Kingenta Bio-engineering Stock Co., Ltd. is on sale.
5% reclaims thermoplastic resin membrane wrapping urea, 6% reclaims thermoplastic resin membrane wrapping urea, 8% to reclaim thermoplastic resin membrane wrapping urea is respectively to account for the recovery waste thermoplastic resin coating agent of examining core fertilizer quality 5%, 6%, 8% in the outer spraying of granular urea nuclear core fertilizer to make.Reclaiming the agent of waste thermoplastic resin coating is the mixture with zeyssatite, Semen Maydis powder and 2: 1: 2 mass ratioes of rubber powder of the polystyrene foam resin 3kg, polyvinylidene film resin 3kg and the 0.5kg that reclaim, in the mixed solvent of miscible together zellon and 1: 1 volume ratio of methylene dichloride in 50kg.Shandong Kingenta Bio-engineering Stock Co., Ltd. is on sale.
Urea undercoat 5% modified epoxy resin integument diammonium phosphate, urea undercoat 5% modified epoxy resin integument saltpetre are; Outside nuclear core fertiliser granulates diammonium phosphate, nuclear core fertiliser granulates saltpetre, spray inner cladding urea earlier respectively, spray the agent of surrounding layer modified epoxy resin integument again and make.Inner cladding urea accounts for 5% of nuclear core fertilizer quality, and the surrounding layer modified epoxy accounts for 5% of nuclear core fertilizer quality.Said modified epoxy resin integument agent is, epoxy resin E-44 and polyurethane PU R are mixed and made into modified epoxy with 9: 1 mass ratioes, adds 10wt% solidifying agent, 15wt% thinner and 1wt% wilkinite again and is mixed and made into.Wherein solidifying agent T-593, thinner benzyl glycidyl ether.Shandong Kingenta Bio-engineering Stock Co., Ltd. is on sale.
Embodiment 1: the special-purpose nitragin controlled release of clover is fertile, and feed composition is following:
The preparation method:
(1) urea coated nitragin preparation of compositions:
A, preparation root nodule bacterium fermented liquid:
By prior art; Sinorhizobium meliloti ACCC17665 bacterial classification is cultivated activation 3 days with N.F,USP MANNITOL-yeast powder slant medium under 28 ℃～30 ℃ conditions, it is plentiful to observe the inclined-plane lawn, and surface wettability is smooth; Be the mucus shape, be used for next step liquid culture as activated spawn during water white transparency.Described N.F,USP MANNITOL-yeast powder slant culture based formulas is: N.F,USP MANNITOL 14.5 grams, yeast powder 5.2 grams, potassium primary phosphate 0.4 gram, sal epsom 0.1 gram, sodium-chlor 0.3 gram, calcium chloride 0.5 gram, agar 15 grams, water 1000 grams.
Get bean sprouts 200 gram and put into suitable quantity of water (do not surface be advisable with the bean sprouts), boiled 15 minutes, get clear liquid, add yeast powder 50 grams; Sucrose 10 grams, potassium primary phosphate 0.5 gram, sal epsom 0.2 gram, sodium-chlor 0.2 gram; Lime carbonate 3 grams keep the skin wet to 1000 grams, and heating is dissolved, and is divided in 3 500 milliliters of triangular flasks; Sterilization is 30 minutes under 0.11 MPa pressure, is prepared into the shake-flask culture base, after the cooling above-mentioned activated spawn is inserted, and cultivates 3 days for 28 ℃, 200 rev/mins; Root nodule bacterial classification that again will be behind shake-flask culture changes in the fermentor tank with the inoculum size of 2wt%, and fermentation tank culture medium is identical with the shake-flask culture base, cultivated 4 days for 28 ℃, the alfalfa Phylloxera fermented liquid.Liquid contains root nodule bacterium viable count 3.43 * 10
8Individual/ml.
B, get in the turfy soil after 35 kilograms of fermented liquids add 110 kilograms of sterilizations thorough mixing.
C, get 3 kilograms of ferrous sulfate and 1.5 kilograms of ammonium molybdates and add in the mixture that step B purchases, mix.
D, the mixture that step C is prepared move into granulation in the granulating disc, 40 ℃～50 ℃ of bake out temperatures, 2～4 millimeters of particle diameters, finished particle water cut 25.8wt%.
E, get 8.3 kilograms in urea and put in the urea melting device, Flashmelt becomes urea liquid, utilizes pressure pump that urea liquid is sprayed on the particle of twirl through the form of shower nozzle with atomizing, promptly gets urea coated nitragin compsn after the cooling.
(2) get urea coated nitragin compsn 120kg, 5% humic acid membrane wrapping urea 100kg, sulphur adds high molecular polymer coated carbamide 60kg; 5% reclaims thermoplastic resin membrane wrapping urea 50kg, and 6% reclaims thermoplastic resin membrane wrapping urea 70kg, and 8% reclaims thermoplastic resin membrane wrapping urea 30kg; Urea undercoat 5% modified epoxy resin integument diammonium phosphate 140kg; Urea undercoat 5% modified epoxy resin integument saltpetre 110kg, diammonium phosphate 170kg, Repone K 150kg; Put into stirrer together and stirred 5 minutes, fully mixing promptly gets.Then the fertilizer that mixes is measured, packs.
Embodiment 2: the special-purpose nitragin controlled release of clover is fertile, and feed composition is following:
The preparation method is with embodiment 1.
Embodiment 3: the special-purpose nitragin controlled release of clover is fertile, and feed composition is following:
The preparation method:
(1) urea coated nitragin preparation of compositions:
The preparation of A, Sinorhizobium meliloti ACCC17665 strain fermentating liquid is with embodiment 1.
B, get in the turfy soil after 40 kilograms of fermented liquids add 140 kilograms of sterilizations thorough mixing.
C, get 5.5 kilograms of ferrous sulfate and 2.8 kilograms of ammonium molybdates and add in the mixture that step B purchases, mix.
D, the mixture that step C is prepared move into granulation in the granulating disc, 40 ℃～50 ℃ of bake out temperatures, 2～4 millimeters of particle diameters, finished particle water cut 29.1%.
E, get 13.5 kilograms in urea and put in the urea melting device, Flashmelt becomes urea liquid, utilizes pressure pump that urea liquid is sprayed on the particle of twirl through the form of shower nozzle with atomizing, promptly gets urea coated nitragin compsn after the cooling.
(2) get urea coated nitragin compsn 150kg, 5% humic acid membrane wrapping urea 120kg, sulphur adds high molecular polymer coated carbamide 40kg; 5% reclaims thermoplastic resin membrane wrapping urea 40kg, and 6% reclaims thermoplastic resin membrane wrapping urea 80kg, and 8% reclaims thermoplastic resin membrane wrapping urea 40kg; Urea undercoat 5% modified epoxy resin integument diammonium phosphate 170kg; Urea undercoat 5% modified epoxy resin integument saltpetre 100kg, diammonium phosphate 140kg, Repone K 120kg; Put into stirrer together and stirred 7 minutes, fully mixing promptly gets.Then the fertilizer that mixes is measured, packs.
Embodiment 4: the special-purpose nitragin controlled release of clover is fertile, and feed composition is following:
The preparation method is with embodiment 3.
Comparative Examples: common Repone K composite fertilizer, nitrogen, phosphorus, potassium content are respectively 15%, 15%, 15%.
The effect of above embodiment 1～4 and Comparative Examples is following:
Test place: Tongliao, Inner Mongolia city, area, Xinjiang autonomous region Kuerle.
Test period: year October in April, 2010 to 2011.
Supply the examination alfalfa variety: the Tongliao City is No. 3, grassland, and the area, Kuerle is No. 1, middle lucerne.
Embodiment 1-4 and Comparative Examples fertilizer nitrogen, phosphorus, potassium total nutrient consumption are identical, 50 kilograms every mu.Embodiment fertilizer application process is that utilization is sowed, applied fertilizer when clover is sowed, and all-in-one is disposable uses overhead 11 centimetres of fertilization depths as base manure.Effect is seen table 1.
Table 1. is compared the application effect of embodiment 1-4 with Comparative Examples
Claims (6)
1. the special-purpose nitragin controlled release of clover is fertile, it is characterized in that raw materials quality part is following:
Said urea coated nitragin compsn prepares by following method: prepare the alfalfa Phylloxera fermented liquid by the prior art liquid fermenting earlier; Adsorb said fermented liquid with the turfy soil after the sterilization again and get nitragin, the mass ratio of said fermented liquid and turfy soil is 1: 3～4; Add 2～4% ferrous sulfate of gained nitragin quality and 1～2% ammonium molybdate, mix 40 ℃～50 ℃ granulations; Must mix the nitragin particle of molybdenum-iron; Be sprayed on this particle surface with fused urea at last, form urea coated layer, get urea coated nitragin compsn; Wherein urea coated layer accounts for 5～10wt% of urea coated nitragin composition quality;
Said 5% humic acid membrane wrapping urea is, is that the nuclear core is fertile with the granular urea, spray one layer binder outside nuclear core fertilizer; Spray the weathered coal of the air-dry pulverizing of one deck again; Solidify the back and repeat said process, reach sticker and account for 1% of the fertile quality of nuclear core, weathered coal accounts for 5% of the fertile quality of nuclear core; Said sticker is that epoxy resin mixes with the mass ratio of triethylene tetramine by 1: 0.10;
It is to be nuclear core fertilizer with the granular urea that said sulphur adds the high molecular polymer coated carbamide, and spraying inner cladding sulphur film sprays the surrounding layer polymer membrane again and makes earlier; Wherein, it is 20% that inner cladding sulphur mould material accounts for nuclear core fertilizer quality per-cent, and the mass percent that polymer membrane accounts for nuclear core fertilizer is 3%; High polymer film-coated dose of mixing that is novolac epoxy and triethylene tetramine with 9: 1 mass ratioes;
Described 5% reclaims thermoplastic resin membrane wrapping urea, 6% reclaims thermoplastic resin membrane wrapping urea, 8% to reclaim thermoplastic resin membrane wrapping urea is respectively to account for the recovery waste thermoplastic resin coating agent of examining core fertilizer quality 5%, 6%, 8% in the outer spraying of granular urea nuclear core fertilizer to make;
Described urea undercoat 5% modified epoxy resin integument diammonium phosphate is that elder generation's spraying inner cladding urea sprays the agent of surrounding layer modified epoxy resin integument again and makes outside nuclear core fertiliser granulates diammonium phosphate; Inner cladding urea accounts for the 4-6% of nuclear core fertilizer quality, and the surrounding layer modified epoxy accounts for 5% of nuclear core fertilizer quality; Described urea undercoat 5% modified epoxy resin integument saltpetre is that elder generation's spraying inner cladding urea sprays the agent of surrounding layer modified epoxy resin integument again and makes outside nuclear core fertiliser granulates saltpetre; Inner cladding urea accounts for the 4-6% of nuclear core fertilizer quality, and the surrounding layer modified epoxy accounts for 5% of nuclear core fertilizer quality; Wherein, Said modified epoxy resin integument agent prepares by following method: epoxy resin E-44 and polyurethane PU R are mixed and made into modified epoxy with 9: 1 mass ratioes, add 10wt% solidifying agent, 15wt% thinner and 1wt% wilkinite again and be mixed and made into.
2. the special-purpose nitragin controlled release of clover as claimed in claim 1 is fertile, it is characterized in that raw materials quality part is following:
3. the fertile preparation method of the special-purpose nitragin controlled releases of claim 1 or 2 described clovers, step is following:
(1) urea coated nitragin preparation of compositions
A, prepare the root nodule bacterium fermented liquid by existing liquid fermentation technology, contain root nodule bacterium viable count 3 * 10 in the fermented liquid with Sinorhizobium meliloti (Sinorhizobium meliloti) bacterial classification or rhizobium melioti (Rhizobium meliloti) bacterial classification
8Individual/ml-5 * 10
8Individual/ml;
B, press fermented liquid: turfy soil=1: 3～4 mass ratioes, adsorb into solid mixture with the turfy soil after the sterilization with fermented liquid;
C, the ammonium molybdate of 2～4% ferrous sulfate and 1～2% is added in the mixture that step B makes, mix by mass ratio;
D, the mixture that step C is made utilize disk or cylinder to cause round shaped grain under 40～50 ℃ of conditions, 2～4 millimeters of particle diameters, and water cut 25～30wt% must mix the nitragin particle of molybdenum-iron;
E, urea melting is become urea liquid, with the form of atomizing urea liquid is sprayed on the nitragin particle of mixing molybdenum-iron that rotates, promptly get urea coated nitragin compsn after the cooling, urea quality accounts for 5～10% of the nitragin granular mass of mixing molybdenum-iron;
(2) urea coated nitragin compsn, 5% humic acid membrane wrapping urea, sulphur are added high molecular polymer coated carbamide, 5% and reclaim thermoplastic resin membrane wrapping urea, 6% and reclaim thermoplastic resin membrane wrapping urea, 8% and reclaim thermoplastic resin membrane wrapping urea, urea undercoat 5% modified epoxy resin integument diammonium phosphate, urea undercoat 5% modified epoxy resin integument saltpetre, diammonium phosphate, Repone K and put into stirrer together by proportioning and stirred 5～8 minutes, fully mixing promptly gets.
4. the fertile preparation method of the special-purpose nitragin controlled release of clover as claimed in claim 3 is characterized in that the used root nodule bacterium bacterial classification of preparation root nodule bacterium fermented liquid is Sinorhizobium meliloti (Sinorhizobium meliloti) or rhizobium melioti (Rhizobium meliloti) among step (1) A.
5. the fertile preparation method of the special-purpose nitragin controlled release of clover as claimed in claim 4; It is characterized in that Sinorhizobium meliloti (Sinorhizobium meliloti) is selected from ACCC17674, ACCC17675, ACCC17665, rhizobium melioti (Rhizobium meliloti) is selected from 17674CGMCC No.1422; Further preferred Sinorhizobium meliloti ACCC17665.
6. the fertile application of the special-purpose nitragin controlled release of claim 1 or 2 described clovers utilizes sowing, fertilising all-in-one is disposable and uses as base manure when clover sow, fertilising is with below seed or a side, overhead 10～13 centimetres of the degree of depth; Fertilizer amount, folding synthetic nitrogen, phosphorus, potassium total amount, 40～60 kilograms every mu.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104130077A (en) * | 2014-08-19 | 2014-11-05 | 安徽莱姆佳肥业有限公司 | Special humic acid-urea coated rhizobium fertilizer for soybean and preparation method thereof |
| CN104387150A (en) * | 2014-09-25 | 2015-03-04 | 中国农业大学 | Alfalfa seed rhizobia seed coating agent and applications thereof |
| CN105660108A (en) * | 2016-01-08 | 2016-06-15 | 山西省农业科学院高寒区作物研究所 | High-yield cultivation method for alfalfa in semi-arid region |
| CN105950520A (en) * | 2016-07-18 | 2016-09-21 | 武汉市农业科学技术研究院作物科学研究所 | Rhizobium capable of efficiently solubilizing phosphorus and application of rhizobium |
| CN106489344A (en) * | 2016-10-20 | 2017-03-15 | 黑龙江省科学院大庆分院 | A kind of method that rhizobium melioti improves soil quality |
| CN106588204A (en) * | 2016-12-23 | 2017-04-26 | 庆阳敦博科技发展有限公司 | Meta-acidic soil medicago sativa high-yield fertilization method |
| CN106754565A (en) * | 2017-02-15 | 2017-05-31 | 黑龙江省科学院生物肥料研究中心 | The method for improving the alfalfa Phylloxera microbial inoculum term of validity |
| CN110627542A (en) * | 2019-10-18 | 2019-12-31 | 山西省农业科学院高寒区作物研究所 | Special controlled-release fertilizer for alfalfa and preparation method thereof |
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| CN101186545A (en) * | 2007-12-14 | 2008-05-28 | 山东金正大生态工程股份有限公司 | Special-purpose controlled-release fertilizer coated with resin for kidney bean and preparation method thereof |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104130077A (en) * | 2014-08-19 | 2014-11-05 | 安徽莱姆佳肥业有限公司 | Special humic acid-urea coated rhizobium fertilizer for soybean and preparation method thereof |
| CN104130077B (en) * | 2014-08-19 | 2016-01-20 | 安徽莱姆佳肥业有限公司 | A kind of soybean special humic acids-urea coated rhizobia fertilizer and preparation method thereof |
| CN104387150A (en) * | 2014-09-25 | 2015-03-04 | 中国农业大学 | Alfalfa seed rhizobia seed coating agent and applications thereof |
| CN104387150B (en) * | 2014-09-25 | 2017-04-12 | 中国农业大学 | Alfalfa seed rhizobia seed coating agent and applications thereof |
| CN105660108A (en) * | 2016-01-08 | 2016-06-15 | 山西省农业科学院高寒区作物研究所 | High-yield cultivation method for alfalfa in semi-arid region |
| CN105950520A (en) * | 2016-07-18 | 2016-09-21 | 武汉市农业科学技术研究院作物科学研究所 | Rhizobium capable of efficiently solubilizing phosphorus and application of rhizobium |
| CN105950520B (en) * | 2016-07-18 | 2019-05-10 | 武汉市农业科学技术研究院作物科学研究所 | A kind of rhizobium of efficient phosphate-solubilizing and its application |
| CN106489344A (en) * | 2016-10-20 | 2017-03-15 | 黑龙江省科学院大庆分院 | A kind of method that rhizobium melioti improves soil quality |
| CN106588204A (en) * | 2016-12-23 | 2017-04-26 | 庆阳敦博科技发展有限公司 | Meta-acidic soil medicago sativa high-yield fertilization method |
| CN106754565A (en) * | 2017-02-15 | 2017-05-31 | 黑龙江省科学院生物肥料研究中心 | The method for improving the alfalfa Phylloxera microbial inoculum term of validity |
| CN110627542A (en) * | 2019-10-18 | 2019-12-31 | 山西省农业科学院高寒区作物研究所 | Special controlled-release fertilizer for alfalfa and preparation method thereof |
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