CN102515981B - Special-purposed onobrychis viciaefolia long-acting biological controlled-release fertilizer, preparation method thereof, and application thereof - Google Patents
Special-purposed onobrychis viciaefolia long-acting biological controlled-release fertilizer, preparation method thereof, and application thereof Download PDFInfo
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Abstract
The invention relates to a special-purposed onobrychis viciaefolia long-acting biological controlled-release fertilizer, a preparation method thereof, and an application thereof. The fertilizer is prepared from raw materials of a urea-coated nitragin composition, sulfur and high-molecular polymer coated urea, 7% recycled thermoplastic resin coated urea, 10% recycled thermoplastic resin coated urea, 7% modified epoxy resin coated diammonium phosphate with urea undercoat, 12% modified epoxy resin coated diammonium phosphate with urea undercoat, a nitrogen-phosphorus-potassium element composite fertilizer, and diammonium phosphate. According to the invention, nitragin is combined with the controlled-release fertilizer. According to nutrient absorption regularity of onobrychis viciaefolia, the ratio of nitrogen, phosphorus and potassium is reasonably allocated, and the coated controlled-release fertilizers with different nutrient releasing periods are allocated, such that the special-purposed onobrychis viciaefolia long-acting controlled-release fertilizer is prepared. The fertilizer provides double functions of inoculation and fertilization when applied once. With the fertilizer, a manurial effect time can be prolonged, application frequency can be reduced, and onobrychis viciaefolia yield can be improved.
Description
Technical field
The present invention relates to a kind of fertilizer, particularly a kind of sainfoin control released fertilizer special and preparation and application that contains nitragin belongs to release and release control fertilizer production and applied technical field.
Background technology
Sainfoin (Onobrychic vicaefolia) is called as " herbage queen ", it is a kind of perennial leguminous herbaceous plant, nutritive ingredient is complete, balanced, livestock happiness food, the sainfoin gross protein value is higher, Mineral element content is also very abundant, and feeding value is higher, and all kinds of livestock and poultries are all liked food.Stalk behind the receipts seed also is the good roughage of horse, ox, sheep.No matter clean culture or with the graminous pasture mixed seeding, its hay and seed production are all higher, contain the necessary multiple amino acids of livestock and poultry in the forage grass.Sainfoin is cold-resistant, drought-resistant ability is strong, and output is high, seed maturity early, once plantation can utilize 4-6, is that the in recent years ground development such as Xinjiang, Gansu, Inner Mongol, Ningxia of China are very fast, one of the herbage of artificial growth area maximum.
Conventional art thinks that Onobrychis is in leguminous plants, and its root growth has root nodule, has the effect of nitrogen in the fixed air, generally need not apply fertilizer, particularly without nitrogen fertilizer application.Current research in recent years shows that applied nitrogen and phosphate fertilizer, particularly both combinations are used and can obviously be increased grass yield, and can improve output and the quality of sainfoin seed.
Because deficiency or the kind of root nodule bacterium quantity are good not in the soil, Rhizobium Inoculation is to improve the sainfoin root nodule numbers, increases nitrogen fixing capacity, promotes that sainfoin is healthy, the important measures of good growth.The state such as the U.S., Canada root nodule bacterium are used more general, and China is because the sainfoin plantation time limit is short, and legume inoculation is used less.
Sainfoin is a kind of perennial plant, and planting density is large, and distance between the ridges is little, and the manuring late difficulty is large.Simultaneously, it is many less that sainfoin is planted regional people, and lack of labor if use quick acting fertilizer, because its fertilizer efficiency is short, needs frequently fertilising could satisfy sainfoin and absorbs requirement, also increases to a certain extent labour cost.Have not yet to see about the patent documentation of sainfoin special fertilizer open.
Controlled Release Fertilizer has the function that the control nutrient discharges, particularly to add the double-deck coating controlled-release fertilizer controlled-release effect of high molecular polymer good for the recovery thermoplastic resin membrane wrapping control-releasing fertilizer of at present scale operation and sulphur, the controlled release time is long, under the condition that temperature is lower in the sainfoin main producing region, rainfall is less, its nutrient controlled release time in soil can reach 2 to 3 years, can effectively reduce fertilizer application frequency, and can reduce nutrient loss, improve fertilizer utilization efficiency.
Summary of the invention
For the deficiencies in the prior art, the invention provides the biological controlled-released fertilizer of a kind of sainfoin long-acting special and preparation and application.
The present invention is combined the root nodule bacterium technology with the Controlled Release Fertilizer technology, and according to the coating controlled-release fertilizer of law of nutritive absorption reasonable disposition nitrogen, phosphorus, potash fertilizer ratio and the Different Nutrients release period of sainfoin, form applied once, sainfoin long-acting special release and release control fertilizer with inoculation and fertilising dual-use function can be realized prolonging the fertilizer efficiency time, reduces fertilizer application frequency, improve sainfoin output through field experiment.
Technical scheme of the present invention is as follows:
The biological controlled-released fertilizer of sainfoin long-acting special, raw materials quality part is as follows:
100～170 parts of urea coated nitragin compositions,
Sulphur adds 50～100 parts of high molecular polymer coated carbamides,
7% reclaims 50～80 parts in thermoplastic resin membrane wrapping urea,
10% reclaims 100～150 parts in thermoplastic resin membrane wrapping urea,
100～150 parts of urea undercoat 7% modified epoxy resin integument diammonium phosphate,
130～170 parts of urea undercoat 12% modified epoxy resin integument diammonium phosphate,
230～280 parts of nitrogen phosphorus potassium three plain composite fertilizers,
60～100 parts of diammonium phosphate.
Described urea coated nitragin composition prepares by the following method: the root nodule bacterium fermented liquid for preparing first sainfoin by the prior art liquid fermenting, adsorb described root nodule bacterium fermented liquid with the turfy soil after the sterilization again and get the solid nitragin, the mass ratio of described root nodule bacterium fermented liquid and turfy soil is 1: 2.5～4; Add 3～6% ferrous sulfate of gained solid 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, form urea coated layer, get urea coated nitragin composition; Wherein urea coated layer accounts for 7～10wt% of urea coated nitragin granular mass.
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 urea quality per-cent, polymer membrane accounts for 3% of total mass behind the urea bag sulphur, 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.
It is to spray respectively the recovery waste thermoplastic resin coating agent that accounts for nuclear core fertilizer quality 7%, 10% to make outside granular urea nuclear core fertilizer that described 7% recovery thermoplastic resin membrane wrapping urea, 10% reclaims thermoplastic resin membrane wrapping urea.The agent of described recovery waste thermoplastic resin coating is, by mass parts with 9 parts of 9 parts of the polystyrene foam resins, the polyethylene film resins that the reclaim mixture with 1.5 parts diatomite, Semen Maydis powder and 2: 1: 2 mass ratioes of rubber powder, together in the miscible zellon and the mixed solvent of 1: 1 volume ratio of methylene dichloride in 150 parts.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 ".
Described urea undercoat 7% modified epoxy resin integument diammonium phosphate, urea undercoat 12% modified epoxy resin integument diammonium phosphate are, outside nuclear core fertiliser granulates diammonium phosphate, spray first inner cladding urea, spray again the agent of surrounding layer modified epoxy resin integument and make.Inner cladding urea accounts for 6% of nuclear core fertilizer quality, and the surrounding layer modified epoxy accounts for respectively 7% and 12% 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 and account for modified epoxy quality 10wt% solidifying agent, 15wt% thinner and 1wt% wilkinite 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.
In the described n-p-k three elements composite fertilizer, nitrogen, Vanadium Pentoxide in FLAKES, potassium oxide content are respectively 15%, 15%, 15%, are mass percent, the commercially available prod.Described diammonium phosphate, commercially available prod, 2～4 millimeters of particle diameters.
According to the present invention, preferred, the biological controlled-released fertilizer of sainfoin long-acting special, raw materials quality part is as follows:
115～125 parts of urea coated nitragin compositions,
Sulphur adds 78～82 parts of high molecular polymer coated carbamides,
7% reclaims 68～72 parts in thermoplastic resin membrane wrapping urea,
10% reclaims 115～125 parts in thermoplastic resin membrane wrapping urea,
105～115 parts of urea undercoat 7% modified epoxy resin integument diammonium phosphate,
155～165 parts of urea undercoat 12% modified epoxy resin integument diammonium phosphate,
240～260 parts of n-p-k three elements composite fertilizers,
85～95 parts of diammonium phosphate.
The preparation method of the biological controlled-released fertilizer of sainfoin long-acting special of the present invention, step is as follows:
(1) preparation of urea coated nitragin composition:
A, prepare the root nodule bacterium fermented liquid of sainfoin by prior art.The method of the present invention in the embodiment 1 is as preferred version.
B, by sainfoin root nodule bacterium fermented liquid: the turfy soil after the sterilization=1: 2.5～4 mass ratioes, adsorb described fermented liquid with the turfy soil after sterilizing and get the solid nitragin.
C, 3～6% the ferrous sulfate that adds gained solid nitragin quality in the solid nitragin of step B preparation and 1～2% ammonium molybdate, mix, must mix the nitragin of molybdenum-iron, then under 40 ℃～50 ℃ conditions, utilize disk or cylinder to cause round shaped grain, 2～4 millimeters of particle diameters, water content 25～30wt% must mix the nitragin particle of molybdenum-iron;
D, urea melting is become urea liquid, spray namely gets urea coated nitragin composition after the cooling to the nitragin particle of mixing molybdenum-iron that rotates, and urea quality accounts for 7～10% of the nitragin granular mass of mixing molybdenum-iron.
(2) urea coated nitragin composition, sulphur are added high molecular polymer coated carbamide, 7% and reclaim thermoplastic resin membrane wrapping urea, 10% and reclaim thermoplastic resin membrane wrapping urea, urea undercoat 7% modified epoxy resin integument diammonium phosphate, urea undercoat 12% modified epoxy resin integument diammonium phosphate, n-p-k three elements composite fertilizer, diammonium phosphate and put into together stirrer by proportioning and stirred 5～7 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 prior art among step (1) A, can all can use with the bacterial strain of sainfoin symbiotic nitrogen fixation.Preferably, Chinese agriculture microbial strains preservation administrative center ACCC is numbered one of 19600,19601,19602,19603,19604,19605,19606 root nodule bacterium (Rhizobium).
The application of the biological controlled-released fertilizer of sainfoin long-acting special of the present invention, before sainfoin sowing, evenly spread fertilizer over the fields in ground, turn over bury after sowing.Fertilizer amount, folding synthetic nitrogen, phosphorus, potassium total amount, 80～100 kilograms every mu.The fertilizer validity period is 3 years, needn't topdress in 3 years.
Excellent results of the present invention is as follows:
1, fertilising, disposable the finishing of inoculation
Fertilizer of the present invention cooperatively interacts root nodule bacterium and fertilizer, applies fertilizer, inoculates disposable finishing, and root nodule bacterium are directly executed at the main root region soil of sainfoin, improves inoculation efficiency, increases sainfoin 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, improve the fertilizer nutrient utilising efficiency
Nitrogen in the fertilizer of the present invention, phosphorus nutrient can satisfy sainfoin and absorb requirement take the controlled release state as main, can reduce again the loss that fertilizer causes because of fixing, loss, volatilization etc., improve fertilizer utilization efficiency.
4, reduce fertilizer application frequency, save labour cost
The fertilizer efficiency time of the present invention is long, and fertilizer application frequency is few, has saved labour cost.
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.Used root nodule bacterium bacterial classification is that Chinese agriculture microbial strains preservation administrative center bacterium numbering is one of ACCC19601, ACCC19605 root nodule bacterium (Rhizobium) among the embodiment.Turfy soil: sea, Jilin farsighted turfy soil development company, organic content is greater than 70wt%.
Sulphur adds high molecular polymer coated carbamide, 7% and reclaims thermoplastic resin membrane wrapping urea, 10% recovery thermoplastic resin membrane wrapping urea, urea undercoat 7% modified epoxy resin integument diammonium phosphate, urea undercoat 12% modified epoxy resin integument diammonium phosphate, and Shandong Kingenta Bio-engineering Stock Co., Ltd. produces:
It is 20% that the inner cladding sulphur mould material that described sulphur adds the high molecular polymer coated carbamide accounts for nuclear core fertilizer urea quality per-cent, polymer membrane accounts for 3% of total mass behind the urea bag sulphur, and high polymer film-coated dose is that novolac epoxy and triethylene tetramine are with the mixing of 9: 1 mass ratioes.
It is to spray respectively the recovery waste thermoplastic resin coating agent that accounts for nuclear core fertilizer quality 7%, 10% to make outside granular urea nuclear core fertilizer that described 7% recovery thermoplastic resin membrane wrapping urea, 10% reclaims thermoplastic resin membrane wrapping urea.The agent of described recovery waste thermoplastic resin coating is, by mass parts with 9 parts of 9 parts of the polystyrene foam resins, the polyethylene film resins that the reclaim mixture with 1.5 parts diatomite, Semen Maydis powder and 2: 1: 2 mass ratioes of rubber powder, together in the miscible zellon and the mixed solvent of 1: 1 volume ratio of methylene dichloride in 150 parts.
Described urea undercoat 7% modified epoxy resin integument diammonium phosphate, urea undercoat 12% modified epoxy resin integument diammonium phosphate be inner cladding urea account for nuclear core fertilizer quality 6%, the surrounding layer modified epoxy accounts for respectively 7%, 12% 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 and account for modified epoxy quality 10wt% solidifying agent T-593,15wt% thinner benzyl glycidyl ether and 1wt% wilkinite and be mixed.
Embodiment 1: the biological controlled-released fertilizer of sainfoin long-acting special, and feed composition is as follows:
Urea coated nitragin composition 150kg,
Sulphur adds high molecular polymer coated carbamide 50kg,
7% reclaims thermoplastic resin membrane wrapping urea 80kg,
10% reclaims thermoplastic resin membrane wrapping urea 100kg,
Urea undercoat 7% modified epoxy resin integument diammonium phosphate 150kg,
Urea undercoat 12% modified epoxy resin integument diammonium phosphate 130kg,
N-p-k three elements composite fertilizer 280kg,
Diammonium phosphate 60kg.
The preparation method:
(1) preparation of urea coated nitragin composition:
The root nodule bacterium fermented liquid of A, preparation sainfoin:
By prior art, the ACCC19601 root nodule bacterium (separating from the sainfoin root nodule) of buying are activated 4 days with slant medium, 25 ℃ of activation temperatures.Described slant culture based formulas is: N.F,USP MANNITOL 11.5 grams, yeast powder 1.2 grams, potassium primary phosphate 0.5 gram, magnesium sulfate heptahydrate 0.2 gram, sodium-chlor 0.15 gram, agar 14 grams, water 1000 grams, pH value 7.0～7.2.
The liquid culture root nodule bacterium: culture medium prescription is yeast powder 5 grams, glucose 15 grams, potassium primary phosphate 0.5 gram, magnesium sulfate heptahydrate 0.2 gram, sodium-chlor 0.1 gram, calcium chloride 0.1 gram, water 1000 grams.Heating is dissolved all the components, is divided in 3 500 milliliters of triangular flasks, and sterilization is 30 minutes under 0.11 MPa pressure, is prepared into the shake-flask culture base, with above-mentioned activated spawn access, cultivates 4 days for 28 ℃, 120 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 3 days for 28 ℃, gets the root nodule bacterium fermented liquid of sainfoin.
B, get in the turfy soil after 40 kilograms of sainfoin root nodule bacterium fermented liquids add 130 kilograms of sterilizations, fully mix.
C, get 8.5 kilograms of ferrous sulfate and 3 kilograms of ammonium molybdates add in the mixture of step B preparation, mix.The gained mixture is moved into granulation in the granulating disc, 40 ℃～50 ℃ of bake out temperatures, 2～4 millimeters of particle diameters must be mixed the nitragin particle of molybdenum-iron, finished particle water content 26.4wt%.
D, get 14.5 kilograms in urea and put in the urea melting device, Flashmelt becomes urea liquid, utilize pressure pump that urea liquid is sprayed on the nitragin particle of mixing molybdenum-iron of twirl by the form of shower nozzle with atomizing, namely get urea coated nitragin composition after the cooling.
(2) 150 kilograms of urea coated nitragin compositions, sulphur are added 50 kilograms of high molecular polymer coated carbamides, 7% and reclaim 80 kilograms in thermoplastic resin membrane wrapping urea, 10% 100 kilograms in recovery thermoplastic resin membrane wrapping urea, 150 kilograms of urea undercoat 7% modified epoxy resin integument diammonium phosphate, 130 kilograms of urea undercoat 12% modified epoxy resin integument diammonium phosphate, 280 kilograms of n-p-k three elements composite fertilizers, 60 kilograms of diammonium phosphate, put into together stirrer and stirred 5 minutes, fully mixing and get final product.Then the fertilizer that mixes is measured, packs.
Embodiment 2: the biological controlled-released fertilizer of sainfoin long-acting special, and feed composition is as follows:
Urea coated nitragin composition 120kg,
Sulphur adds high molecular polymer coated carbamide 80kg,
7% reclaims thermoplastic resin membrane wrapping urea 70kg,
10% reclaims thermoplastic resin membrane wrapping urea 120kg,
Urea undercoat 7% modified epoxy resin integument diammonium phosphate 110kg,
Urea undercoat 12% modified epoxy resin integument diammonium phosphate 160kg,
N-p-k three elements composite fertilizer 250kg,
Diammonium phosphate 90kg.
The preparation method is with embodiment 1.
Embodiment 3: the biological controlled-released fertilizer of sainfoin long-acting special, and feed composition is as follows:
Urea coated nitragin composition 100kg,
Sulphur adds high molecular polymer coated carbamide 100kg,
7% reclaims thermoplastic resin membrane wrapping urea 60kg,
10% reclaims thermoplastic resin membrane wrapping urea 150kg,
Urea undercoat 7% modified epoxy resin integument diammonium phosphate 130kg,
Urea undercoat 12% modified epoxy resin integument diammonium phosphate 150kg,
N-p-k three elements composite fertilizer 230kg,
Diammonium phosphate 80kg.
The preparation method:
(1) preparation of urea coated sainfoin nitragin composition:
The root nodule bacterium fermented liquid preparation method of A, sainfoin is with embodiment 1.Difference is to use ACCC19605 root nodule bacterium (separating from the sainfoin root nodule).
B, 30 kilograms of root nodule bacterium fermented liquids getting sainfoin add in the turfy soil after 90 kilograms of sterilizations, fully mix.
C, get 4 kilograms of ferrous sulfate and 1.5 kilograms of ammonium molybdates add in the mixture of step B preparation, mix.The mixture of preparation is moved into granulation in the granulating disc, 40 ℃～50 ℃ of bake out temperatures, 2～4 millimeters of particle diameters must be mixed the nitragin particle of molybdenum-iron, finished particle water content 27.6wt%.
D, get 9 kilograms in urea and put in the urea melting device, Flashmelt becomes urea liquid, utilize pressure pump that urea liquid is sprayed on the nitragin particle of mixing molybdenum-iron of twirl by the form of shower nozzle with atomizing, namely get urea coated sainfoin nitragin composition after the cooling.
(2) 100 kilograms of urea coated nitragin compositions, sulphur are added 100 kilograms of high molecular polymer coated carbamides, 7% and reclaim 60 kilograms in thermoplastic resin membrane wrapping urea, 10% 150 kilograms in recovery thermoplastic resin membrane wrapping urea, 130 kilograms of urea undercoat 7% modified epoxy resin integument diammonium phosphate, 150 kilograms of urea undercoat 12% modified epoxy resin integument diammonium phosphate, 230 kilograms of n-p-k three elements composite fertilizers, 80 kilograms of diammonium phosphate, put into together stirrer and stirred 7 minutes, fully mixing and get final product.Then the fertilizer that mixes is measured, packs.
Embodiment 4: the biological controlled-released fertilizer of sainfoin long-acting special, and feed composition is as follows:
Urea coated nitragin composition 170kg,
Sulphur adds high molecular polymer coated carbamide 60kg,
7% reclaims thermoplastic resin membrane wrapping urea 50kg,
10% reclaims thermoplastic resin membrane wrapping urea 110kg,
Urea undercoat 7% modified epoxy resin integument diammonium phosphate 140kg,
Urea undercoat 12% modified epoxy resin integument diammonium phosphate 140kg,
N-p-k three elements composite fertilizer 260kg,
Diammonium phosphate 70kg.
The preparation method is with embodiment 3.
Comparative Examples: n-p-k three elements composite fertilizer, nitrogen, Vanadium Pentoxide in FLAKES, potassium oxide quality percentage composition are respectively 15%, 15%, 15%.
The effect of above embodiment 1～4 and Comparative Examples is as follows:
Test site: Pingan County, Qinghai Province, Gansu Province's Gonghe County.
Test period: year September in April, 2008 to 2011.
For trying the sainfoin kind: Pingan County " common sainfoin ", Gonghe County is used " Caucasia sainfoin ".
Embodiment 1-4 and Comparative Examples fertilizer nitrogen, phosphorus, potassium total nutrient consumption are identical, 90 kilograms every mu.Embodiment fertilizer and Comparative Examples Term Fertilization method all be, before the sainfoin sowing, evenly spread fertilizer over the fields in ground, turn over bury after sowing.Effect sees Table 1.
Table 1. is compared the application effect of embodiment 1-4 with Comparative Examples
Claims (5)
1. the biological controlled-released fertilizer of sainfoin long-acting special is characterized in that raw materials quality part is as follows:
Described urea coated nitragin composition prepares by the following method: the root nodule bacterium fermented liquid for preparing first sainfoin by the prior art liquid fermenting, adsorb described root nodule bacterium fermented liquid with the turfy soil after the sterilization again and get the solid nitragin, the mass ratio of described root nodule bacterium fermented liquid and turfy soil is 1: 2.5～4; Add 3～6% ferrous sulfate of gained solid nitragin quality and 1～2% ammonium molybdate, mix, 40 ° of C～50 ° C granulations, must mix the nitragin particle of molybdenum-iron, urea with melting is sprayed on this particle surface at last, form urea coated layer, get urea coated nitragin composition; Wherein urea coated layer accounts for 7～10wt% of urea coated nitragin granular mass;
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 urea quality per-cent, and polymer membrane accounts for 3% of total mass behind the urea bag sulphur, and described polymer membrane is that novolac epoxy and triethylene tetramine are with the mixing of 9: 1 mass ratioes;
It is to spray respectively the recovery waste thermoplastic resin coating agent that accounts for nuclear core fertilizer quality 7%, 10% to make outside granular urea nuclear core fertilizer that described 7% recovery thermoplastic resin membrane wrapping urea, 10% reclaims thermoplastic resin membrane wrapping urea; The agent of described recovery waste thermoplastic resin coating is, by mass parts with 9 parts of 9 parts of the polystyrene foam resins, the polyethylene film resins that the reclaim mixture with 1.5 parts diatomite, Semen Maydis powder and rubber powder 2:1:2 mass ratio, together in the miscible zellon and the mixed solvent of methylene dichloride 1:1 volume ratio in 150 parts;
Described urea undercoat 7% modified epoxy resin integument diammonium phosphate, urea undercoat 12% modified epoxy resin integument diammonium phosphate are, outside nuclear core fertiliser granulates diammonium phosphate, spray first inner cladding urea, spray again the agent of surrounding layer modified epoxy resin integument and make; Inner cladding urea accounts for 6% of nuclear core fertilizer quality, and the surrounding layer modified epoxy accounts for respectively 7%, 12% of nuclear core fertilizer quality; 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 and account for modified epoxy quality 10wt% solidifying agent, 15wt% thinner and 1wt% wilkinite and be mixed.
2. the biological controlled-released fertilizer of sainfoin long-acting special as claimed in claim 1 is characterized in that raw materials quality part is as follows:
3. the preparation method of claim 1 or the biological controlled-released fertilizer of 2 described sainfoin long-acting specials, step is as follows:
(1) preparation of urea coated nitragin composition:
A, prepare the root nodule bacterium fermentation of sainfoin by prior art;
B, by sainfoin root nodule bacterium fermented liquid: the turfy soil after the sterilization=1: 2.5～4 mass ratioes, adsorb described fermented liquid with the turfy soil after sterilizing and get the solid nitragin;
C, 3～6% the ferrous sulfate that adds gained solid nitragin quality in the solid nitragin of step B preparation and 1～2% ammonium molybdate, mix, must mix the nitragin of molybdenum-iron, then under ° C condition of 40 ° of C～50, utilize disk or cylinder to cause round shaped grain, 2～4 millimeters of particle diameters, water content 25～30wt% must mix the nitragin particle of molybdenum-iron;
D, urea melting is become urea liquid, spray namely gets urea coated nitragin composition after the cooling to the nitragin particle of mixing molybdenum-iron that rotates, and urea quality accounts for 7～10% of the nitragin granular mass of mixing molybdenum-iron;
(2) urea coated nitragin composition, sulphur are added high molecular polymer coated carbamide, 7% and reclaim thermoplastic resin membrane wrapping urea, 10% and reclaim thermoplastic resin membrane wrapping urea, urea undercoat 7% modified epoxy resin integument diammonium phosphate, urea undercoat 12% modified epoxy resin integument diammonium phosphate, n-p-k three elements composite fertilizer, diammonium phosphate and put into together stirrer by proportioning and stirred 5～7 minutes, fully mixing and get final product.
4. the preparation method of the biological controlled-released fertilizer of sainfoin long-acting special as claimed in claim 3 is characterized in that the used root nodule bacterium bacterial classification of preparation root nodule bacterium fermented liquid is that Chinese agriculture microbial strains preservation administrative center ACCC is numbered one of 19600,19601,19602,19603,19604,19605,19606 root nodule bacterium (Rhizobium) among step (1) A.
5. the application of claim 1 or the biological controlled-released fertilizer of 2 described sainfoin long-acting specials, before sainfoin sowing, evenly spread fertilizer over the fields in ground, turn over bury after sowing; Fertilizer amount, folding synthetic nitrogen, phosphorus, potassium total amount, 80～100 kilograms every mu.
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| CN1104196A (en) * | 1993-12-22 | 1995-06-28 | 黄明和 | Active column-type chengji full importance fertilizer |
| CN101194567B (en) * | 2008-01-03 | 2010-12-08 | 中国农业大学 | Method for improving production volume and quality of alfalfa seed |
| CN102193933A (en) * | 2010-03-10 | 2011-09-21 | 北大方正集团有限公司 | Method and system for webpage editing |
| CN102153406B (en) * | 2010-12-21 | 2012-04-25 | 菏泽金正大生态工程有限公司 | Special controlled release fertilizer for preventing and treating root diseases of hot peppers and preparation method of special controlled release fertilizer |
| CN102173961B (en) * | 2010-12-23 | 2012-04-18 | 菏泽金正大生态工程有限公司 | Disease-preventing type controlled release fertilizer special for Xinjiang cotton, and preparation method and application thereof |
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