CN102503736B - 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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- CN102503736B CN102503736B CN2011103531140A CN201110353114A CN102503736B CN 102503736 B CN102503736 B CN 102503736B CN 2011103531140 A CN2011103531140 A CN 2011103531140A CN 201110353114 A CN201110353114 A CN 201110353114A CN 102503736 B CN102503736 B CN 102503736B
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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
The present invention relates to a kind of leguminous forage Controlled Release Fertilizer, 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 method that improves seedling vigor and saline and alkaline resistance, with silica gel that seed is at room temperature dry first, make seed moisture content reduce to 4.59～7.09%, seed after the super dry-cure seals with aluminium-foil paper, place 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 Growing method and has been used for the saltings seedling rate low, yield poorly and problem that the clover wintering rate is low.The method alfalfa seedling rate is 80～90%, and wintering rate is 78～92%, is suitable in light Saline plantation.The present invention quotes above-mentioned two patent documents as the background technology of ALFALFA PRODUCTION.
Because deficiency or the kind of root nodule bacterium quantity are good not in the soil, Rhizobium Inoculation is the important measures that increase the clover symbiotic nitrogen fixation, increase nitrogen nutrition, improve quantity and quality.Studies show that Rhizobium Inoculation On Medicago Sativa can make the plant branch amount increase by 32%, plant height increases by 16%, and grass yield increases by 28%, and also has the effect that continues volume increase in the 2nd year, the 3rd year.CN101194567A (CN200810055974.4) provides a kind of method that improves Alfalfa seed yield and quality, comprises the selection plot, chooses grass seeds, the clover kind is abolished dormancy process; Root nodule bacterium are made bacterium liquid, be sprayed onto on the seed, stir with alfalfa seed.
The clover Rhizobium Inoculation mainly is seed soaking or soaks root at present, inoculates with the form of fertilizer and there is not yet report.Clover is perennial crop, and its planting area is mainly at people many area less, lack of labor, extensive management.Therefore, be particularly suitable for this crop to reduce fertilizer application frequency and fertilizer utilization efficiency as the Controlled Release Fertilizer of main purpose.
Summary of the invention
For the deficiencies in the prior art, the invention provides a kind of clover control released fertilizer special and preparation and application that contains nitragin.
Technical scheme of the present invention is as follows:
The special-purpose nitragin Controlled Release Fertilizer of a kind of clover, raw materials quality part is as follows:
Described urea coated nitragin composition prepares by the following method: prepare the alfalfa Phylloxera fermented liquid by the prior art liquid fermenting first, adsorb described fermented liquid with the turfy soil after the sterilization again and get nitragin, the mass ratio of described 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, urea with melting is sprayed on this particle surface at last, forms urea coated layer, gets urea coated nitragin composition; Wherein urea coated layer accounts for 5～10wt% of urea coated nitragin composition quality.
Described 5% humic acid membrane wrapping urea is take granular urea as nuclear core fertilizer, to spray a layer binder outside nuclear core fertilizer, spray again the weathered coal of the air-dry pulverizing of one deck, repeat said process after solidifying, reach binding agent 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 Resins, epoxy and triethylene tetramine be mixed by 1: 0.10 mass ratio described binding agent.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 take granular urea as nuclear core fertilizer that described sulphur adds the high molecular polymer coated carbamide, sprays first inner cladding sulphur film, sprays the surrounding layer polymer membrane again and makes; 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, and high polymer film-coated dose is that novolac epoxy and triethylene tetramine are with the mixing of 9: 1 mass ratioes.The preparation method is referring to CN1246265C (200410024050.X) " preparation method of the high polymer film-coated controlled release fertilizer take sulphur as undercoat ", 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) " to reclaim thermoplastic resin as the production method of the film-coated controlled release fertilizer of degradable membrane " embodiment 1-4.
Described urea undercoat 5% modified epoxy resin integument diammonium phosphate is, sprays first inner cladding urea outside nuclear core fertiliser granulates diammonium phosphate, sprays the agent of surrounding layer modified epoxy resin integument again and makes.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, sprays first inner cladding urea outside nuclear core fertiliser granulates saltpetre, sprays the agent of surrounding layer modified epoxy resin integument again and makes.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, described modified epoxy resin integument agent prepares by the 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.Wherein said solidifying agent, thinner are selected by this area is conventional, particularly preferably solidifying agent T-593, thinner benzyl glycidyl ether.The preparation method is referring to CN 1246264C (200410024049.7) " the modified epoxy resin integument release and release control fertilizer take spraying urea as undercoat ".
More than various Controlled Release Fertilizer raw material Shandong Kingenta Bio-engineering Stock Co., Ltd. all have to produce and sell, carry out composite after can directly buying.Described 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 Fertilizer of clover, raw materials quality part is as follows:
The preparation method of the special-purpose nitragin Controlled Release Fertilizer of clover of the present invention, step is as follows:
(1) preparation of urea coated nitragin composition:
A, prepare the root nodule bacterium fermented liquid with Sinorhizobium meliloti (Sinorhizobium meliloti) bacterial classification or rhizobium melioti (Rhizobium meliloti) bacterial classification by existing liquid fermentation technology, contain root nodule bacterium viable count 3 * 10 in the fermented liquid
8Individual/ml-5 * 10
8Individual/ml.
B, fermented liquid in mass ratio: the turfy soil after turfy soil=1: 3～4 usefulness sterilization adsorbs into solid mixture with fermented liquid.
C, the ammonium molybdate with 2～4% ferrous sulfate and 1～2% adds in the mixture of step B preparation in mass ratio, mixes.
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 content 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, namely get urea coated nitragin composition after the cooling, urea quality accounts for 5～10% of the nitragin granular mass of mixing molybdenum-iron.
(2) urea coated nitragin composition, 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 together stirrer by proportioning and stirred 5～8 minutes, fully mixing and get final product.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 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, wherein take the wide spectrum bacterial strain as preferred, Sinorhizobium meliloti (Sinorhizobium meliloti) ACCC17674 for example, 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 when clover is sowed, fertilization all-in-one machine is disposable uses 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, Algonquin, American Pastoral, Huaiyin clover, golden clover or Alfaking.Particularly preferably be suitable for No. 3, grassland, No. 1, middle lucerne.
The present invention is wrapped in the needed trace elements iron of nitragin, Nodule Growth and fixed nitrogen and molybdenum in the urea shell together, and according to the coated urea of regulation of fertilizer requirement reasonable disposition phosphorus, potash fertilizer and the Different Nutrients release period of clover, form the clover special-purpose control-release fertilizer with inoculation and fertilising dual-use function.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 as follows:
1, fertilising, disposable the finishing of inoculation
The clover special-purpose control-release fertilizer that the present invention contains root nodule bacterium cooperatively interacts root nodule bacterium and fertilizer, fertilising, disposable the finishing of inoculation, and saving of labor, laborsaving, and root nodule bacterium are directly executed at the main root region soil of clover, improve inoculation efficiency, increase alfalfa output.
2, root nodule bacterium are wrapped, and reduce the impact of environmental factors
Root nodule bacterium are the thalline of living, and its activity is affected by environment easily, and such as temperature, illumination etc., root nodule bacterium are wrapped in the fertilizer of the present invention, can reduce the impact of environmental factors, prolong working lipe.
3, Controlled Release Nitrogen Fertilizer can reduce the impact on nodule nitrogen fixation
Nitrogenous fertilizer in the fertilizer of the present invention mainly is Controlled Release Nitrogen Fertilizer, their nitrogen nutrient slowly discharges, namely can supplementary schedule solely by the fixing nitrogen deficiency of root nodule, can avoid again sudden fast rush behind the nitrogen application on the impact of nodule nitrogen fixation effect, both coordinate to supply clover nitrogen needs.
Embodiment
The present invention will be further described below in conjunction with embodiment, but be not limited to this.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 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 fertile take granular urea as the nuclear core, spray one layer binder outside nuclear core fertilizer sprays the weathered coal of the air-dry pulverizing of one deck again, repeats said process after solidifying, reach binding agent 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 Resins, epoxy and triethylene tetramine be mixed by 1: 0.10 mass ratio described binding agent.Shandong Kingenta Bio-engineering Stock Co., Ltd. is on sale.
It is take granular urea as nuclear core fertilizer that sulphur adds the high molecular polymer coated carbamide, sprays first inner cladding sulphur film, sprays the surrounding layer polymer membrane again and makes; 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%, and high polymer film-coated dose is that novolac epoxy and triethylene tetramine are with the mixing of 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.Reclaim the agent of waste thermoplastic resin coating and be the mixture of diatomite, Semen Maydis powder and 2: 1: 2 mass ratioes of rubber powder of polystyrene foam resin 3kg, the polyethylene film resin 3kg that will reclaim and 0.5kg, together in the miscible zellon and the mixed solvent of 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 first inner cladding urea respectively, spray again the agent of surrounding layer modified epoxy resin integument 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.Described 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.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 Fertilizer of clover, and feed composition is as follows:
The preparation method:
(1) preparation of urea coated nitragin composition:
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, calcium carbonate 3 grams, keep the skin wet to 1000 grams, heating is dissolved, and is divided in 3 500 milliliters of triangular flasks, sterilization is 30 minutes under 0.11 MPa pressure, be prepared into the shake-flask culture base, with above-mentioned activated spawn access, cultivated 3 days for 28 ℃, 200 rev/mins after the cooling; The inoculum size of the root nodule bacterial classification behind shake-flask culture with 2wt% changed in the fermentor tank, fermentation tank culture medium is identical with the shake-flask culture base again, cultivates 4 days, and gets the alfalfa Phylloxera fermented liquid for 28 ℃.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, fully mix.
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 content 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 by the form of shower nozzle with atomizing, namely gets urea coated nitragin composition after the cooling.
(2) get urea coated nitragin composition 120kg, 5% humic acid membrane wrapping urea 100kg, sulphur adds high molecular polymer coated carbamide 60kg, 5% reclaims thermoplastic resin membrane wrapping urea 50kg, 6% reclaims thermoplastic resin membrane wrapping urea 70kg, 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 puts into together stirrer and stirred 5 minutes, fully mixing and get final product.Then the fertilizer that mixes is measured, packs.
Embodiment 2: the special-purpose nitragin Controlled Release Fertilizer of clover, and feed composition is as follows:
The preparation method is with embodiment 1.
Embodiment 3: the special-purpose nitragin Controlled Release Fertilizer of clover, and feed composition is as follows:
The preparation method:
(1) preparation of urea coated nitragin composition:
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, fully mix.
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 content 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 by the form of shower nozzle with atomizing, namely gets urea coated nitragin composition after the cooling.
(2) get urea coated nitragin composition 150kg, 5% humic acid membrane wrapping urea 120kg, sulphur adds high molecular polymer coated carbamide 40kg, 5% reclaims thermoplastic resin membrane wrapping urea 40kg, 6% reclaims thermoplastic resin membrane wrapping urea 80kg, 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 puts into together stirrer and stirred 7 minutes, fully mixing and get final product.Then the fertilizer that mixes is measured, packs.
Embodiment 4: the special-purpose nitragin Controlled Release Fertilizer of clover, and feed composition is as follows:
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 as follows:
Test site: Tongliao, Inner Mongolia city, Xinjiang autonomous region Kurle region.
Test period: year October in April, 2010 to 2011.
For trying alfalfa variety: the Tongliao City is No. 3, grassland, and Kurle region 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 Term Fertilization method is that utilization is sowed when clover is sowed, fertilization all-in-one machine is disposable uses overhead 11 centimetres of fertilization depths as base manure.Effect sees 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 Fertilizer of a clover is characterized in that raw materials quality part is as follows:
100～150 parts of urea coated nitragin compositions,
50～120 parts in 5% humic acid membrane wrapping urea,
Sulphur adds 40～110 parts of high molecular polymer coated carbamides,
5% reclaims 40～90 parts in thermoplastic resin membrane wrapping urea,
6% reclaims 40～80 parts in thermoplastic resin membrane wrapping urea,
8% reclaims 30～70 parts in thermoplastic resin membrane wrapping urea,
120～170 parts of urea undercoat 5% modified epoxy resin integument diammonium phosphate,
70～120 parts in urea undercoat 5% modified epoxy resin integument saltpetre,
140～170 parts of diammonium phosphate,
120～170 parts in Repone K;
Described urea coated nitragin composition prepares by the following method: prepare the alfalfa Phylloxera fermented liquid by the prior art liquid fermenting first, adsorb described fermented liquid with the turfy soil after the sterilization again and get nitragin, the mass ratio of described 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, urea with melting is sprayed on this particle surface at last, forms urea coated layer, gets urea coated nitragin composition; Wherein urea coated layer accounts for 5～10wt% of urea coated nitragin composition quality;
Described 5% humic acid membrane wrapping urea is take granular urea as nuclear core fertilizer, to spray a layer binder outside nuclear core fertilizer, spray again the weathered coal of the air-dry pulverizing of one deck, repeat said process after solidifying, reach binding agent and account for 1% of the fertile quality of nuclear core, weathered coal accounts for 5% of the fertile quality of nuclear core; Described binding agent is that Resins, epoxy mixes with the mass ratio of triethylene tetramine by 1: 0.10;
It is take granular urea as nuclear core fertilizer that described sulphur adds the high molecular polymer coated carbamide, sprays first inner cladding sulphur film, sprays the surrounding layer polymer membrane again and makes; 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 is that novolac epoxy and triethylene tetramine are with the mixing of 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, sprays first inner cladding urea outside nuclear core fertiliser granulates diammonium phosphate, sprays the agent of surrounding layer modified epoxy resin integument again and makes; 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, sprays first inner cladding urea outside nuclear core fertiliser granulates saltpetre, sprays the agent of surrounding layer modified epoxy resin integument again and makes; 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, described modified epoxy resin integument agent prepares by the 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.
2. the special-purpose nitragin Controlled Release Fertilizer of clover as claimed in claim 1 is characterized in that raw materials quality part is as follows:
125～135 parts of urea coated nitragin compositions,
58～62 parts in 5% humic acid membrane wrapping urea,
Sulphur adds 95～105 parts of high molecular polymer coated carbamides,
5% reclaims 78～82 parts in thermoplastic resin membrane wrapping urea,
6% reclaims 48～52 parts in thermoplastic resin membrane wrapping urea,
8% reclaims 58～62 parts in thermoplastic resin membrane wrapping urea,
145～155 parts of urea undercoat 5% modified epoxy resin integument diammonium phosphate,
78～82 parts in urea undercoat 5% modified epoxy resin integument saltpetre,
145～155 parts of diammonium phosphate,
135～145 parts in Repone K.
3. the preparation method of claim 1 or the special-purpose nitragin Controlled Release Fertilizers of 2 described clovers, step is as follows:
(1) preparation of urea coated nitragin composition
A, prepare the root nodule bacterium fermented liquid with Sinorhizobium meliloti (Sinorhizobium meliloti) bacterial classification or rhizobium melioti (Rhizobium meliloti) bacterial classification by existing liquid fermentation technology, contain root nodule bacterium viable count 3 * 10 in the fermented liquid
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 in mass ratio, mix;
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 content 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, namely get urea coated nitragin composition after the cooling, urea quality accounts for 5～10% of the nitragin granular mass of mixing molybdenum-iron;
(2) urea coated nitragin composition, 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 together stirrer by proportioning and stirred 5～8 minutes, fully mixing and get final product.
4. the preparation method of the special-purpose nitragin Controlled Release Fertilizer 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 preparation method of the special-purpose nitragin Controlled Release Fertilizer 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.
6. the application of claim 1 or the special-purpose nitragin Controlled Release Fertilizer of 2 described clovers utilizes sowing, fertilization all-in-one machine is disposable 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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| CN105801318A (en) * | 2014-08-19 | 2016-07-27 | 杨献美 | Method for preparing special humic acid-urea coated rhizobium fertilizer for soybeans |
| 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 |
| 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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| CN100429188C (en) * | 2007-11-09 | 2008-10-29 | 山东金正大生态工程股份有限公司 | Special controlled release fertilizer for peanut, soybean and manufacturing method thereof |
| CN100448811C (en) * | 2007-12-14 | 2009-01-07 | 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 |
| CN101805227A (en) * | 2010-04-16 | 2010-08-18 | 范友 | Slow control release biological inorganic and organic mixed fertilizer |
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