CN101891549B - Fulvic acid chelated nano element synergistic urea and preparation method thereof - Google Patents
Fulvic acid chelated nano element synergistic urea and preparation method thereof Download PDFInfo
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- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 title claims abstract description 144
- 239000004202 carbamide Substances 0.000 title claims abstract description 144
- 230000002195 synergetic effect Effects 0.000 title claims abstract description 70
- 238000002360 preparation method Methods 0.000 title claims abstract description 22
- PUKLDDOGISCFCP-JSQCKWNTSA-N 21-Deoxycortisone Chemical compound C1CC2=CC(=O)CC[C@]2(C)[C@@H]2[C@@H]1[C@@H]1CC[C@@](C(=O)C)(O)[C@@]1(C)CC2=O PUKLDDOGISCFCP-JSQCKWNTSA-N 0.000 title claims abstract description 13
- FCYKAQOGGFGCMD-UHFFFAOYSA-N Fulvic acid Natural products O1C2=CC(O)=C(O)C(C(O)=O)=C2C(=O)C2=C1CC(C)(O)OC2 FCYKAQOGGFGCMD-UHFFFAOYSA-N 0.000 title claims abstract description 13
- 239000002509 fulvic acid Substances 0.000 title claims abstract description 13
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- 239000011248 coating agent Substances 0.000 claims abstract description 30
- 238000000034 method Methods 0.000 claims abstract description 22
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- 239000003795 chemical substances by application Substances 0.000 claims description 10
- 239000000470 constituent Substances 0.000 claims description 8
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- WURBVZBTWMNKQT-UHFFFAOYSA-N 1-(4-chlorophenoxy)-3,3-dimethyl-1-(1,2,4-triazol-1-yl)butan-2-one Chemical compound C1=NC=NN1C(C(=O)C(C)(C)C)OC1=CC=C(Cl)C=C1 WURBVZBTWMNKQT-UHFFFAOYSA-N 0.000 description 1
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
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- OHJMTUPIZMNBFR-UHFFFAOYSA-N biuret Chemical compound NC(=O)NC(N)=O OHJMTUPIZMNBFR-UHFFFAOYSA-N 0.000 description 1
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- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/22—Improving land use; Improving water use or availability; Controlling erosion
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/20—Reduction of greenhouse gas [GHG] emissions in agriculture, e.g. CO2
- Y02P60/21—Dinitrogen oxide [N2O], e.g. using aquaponics, hydroponics or efficiency measures
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Abstract
The invention provides fulvic acid chelated nano element synergistic urea, which comprises the following components in percentage by weight: 3 to 8 percent of salt fulvic acid, 0.1 to 0.3 percent of nano bamboo charcoal, 0.05 to 0.2 percent of nano titanium powder, 0.15 to 0.3 percent of anti-caking coating agent and 91.55 to 96.45 percent of urea. The invention also provides a method for preparing the synergistic urea. The fulvic acid chelated nano element synergistic urea is a novel nitrogen fertilizer product, can effectively activate soil nutrient and promote crops to absorb and utilize the nutrient and enhance the photosynthesis of the crops, and also can obviously improve the utilization rate of nitrogen element of the urea and the crop yield and realize the controlled release and synergism of the urea so as to realize the concept of 'energy conservation, emission reduction and environment friendliness' in the field of agriculture; moreover, the preparation method has the advantages of simple process, mild production conditions and low cost.
Description
Technical field
The present invention relates to a kind of Novel synergistic urea fertilizer, specifically, relate to a kind of fulvic acid chelated nano element synergistic urea and preparation method thereof, belong to agricultural technology field.
Background technology
At present, along with China's agricultural development, chemical fertilizer has become material maximum in the agriculture production and has dropped into, and chemical fertilizer expenditure proportion accounts for 40% of full scale production expenditure.China's nitrogenous fertilizer apparent consumption amount reached 3,965 ten thousand tons of N in 2007, and wherein agricultural consumption is approximately 3,500 ten thousand tons.Wherein, the amount of application of urea improves year by year, and China's urea production total amount was 2485.6 ten thousand tons (pure) in 2007, increased by 11.5% on a year-on-year basis, and China's urea production is first of the consumption Jun Ju world.The good academician of Zhu Zhao in 1998 points out that the staple food crop utilization rate of nitrogen fertilizer was 30～35% at that time, and at present, China's utilization rate of nitrogen fertilizer constantly descends, the Chinese Academy of Sciences is by monitoring 165 field tests statistics of carrying out in the village and draw 20 provinces in 2002～2005 years whole nations, 50 nutrients, China's Three major grain crops (paddy rice, summer corn, winter wheat) nitrogenous fertilizer this season utilization ratio mean value is 28.7%, is lower than 30～40 percentage points in agriculture developed country.As seen, the nitrogenous fertilizer consumption that China is huge, extremely low utilization ratio will cause the series of problems such as the wasting of resources, environmental pollution, production cost increase.How to improve in the agriculture production nitrogenous fertilizer particularly utilization rate of fertilizer and the effect of increasing production of urea; become one of important topic of professional domains such as relating to agriculture production, fertilizer technology, environment protection, studied and utilized important channel long-acting, that the new high-efficiency urea product becomes raising blood urea nitrogen element utilization ratio.
From published various technical literatures and patented technology, humic acids synergistic urea product mainly is divided three classes at present:
(1) capsule type humic acid urea
Described capsule type humic acid urea is at the coated one deck humic acids in urea outside, to reach purpose long-acting, slowly-releasing.For example, China Patent Publication No. CN1376652, open day on October 30th, 2002, denomination of invention is " a kind of capsule type humic acid urea and preparation method thereof ", disclose a kind of capsule type humic acid urea, it is for adopting the activated method rear and that the urea granules reaction hands over bag to be coated with of coal humic acid to be prepared from.
(2) blend solvay-type humic acid urea
Affiliated blend solvay-type humic acid urea is to stir, heat after humic acids is mixed with urea, makes its abundant complexing, is prepared from.For example, Chinese patent CN1169975, open day on January 14th, 1998, denomination of invention " a kind of preparation method of complex of humic acids and urea " discloses a kind of complex of humic acids and urea, and it is for being 80～200 parts of 5～10% ammoniacal liquor with concentration, 90～10 parts in 10～90 parts of low-grade coal (being converted into pure humic acids) and urea, carried out each reaction of network in 2～6 hours 60～105 ℃ of lower continuously stirring reactions, then after the sedimentation solid-liquid separation, drying is made.
(3) interior caryogram humic acid urea
Described interior caryogram humic acid urea is that the urea with molten state is sprayed on the humic acids particle surface and is prepared from.For example, Chinese patent CN101429063, open day on May 13rd, 2009, denomination of invention " humic acid urea and preparation method thereof ", a kind of humic acid urea of urea parcel humic acid type is disclosed, it is after under 70～150 ℃ of temperature the Urea melting being liquid state, and with the humic acids particle surface that the air spraying of 0.4～0.6MPa is rotated in the rotary drum, cooling is made.
All there are different shortcomings in the humic acids synergistic urea product that provides in the prior art of more than enumerating.Wherein, there is the easy efflorescence of encapsulation layer in capsule type humic acid urea series products, comes off, and is unfavorable for the agriculture production operation; Utilize the low level weathered coal, its humic acids content is low, poorly water-soluble, Crop utilize the deficiencies such as rate variance.Blend solvay-type humic acid urea and interior caryogram humic acid urea series products, more or emphasizing slow release and the decomposition of urea, to reduce the nitrogen element loss, but less consideration is under relatively low Nutrient Environment, promote to discharge soil nutrient, stimulate the nutrient absorption capability of crop root, realize the raising of nitrogen element utilization ratio.
Summary of the invention
The object of the present invention is to provide a kind of fulvic acid chelated nano element synergistic urea, this synergistic urea is a kind of novel nitrogen product, it can the effective activation soil nutrient, promote crop to absorption, the utilization of nutrient, significantly improve the utilization ratio of blood urea nitrogen element, realize the long-acting and synergy of urea.
Another object of the present invention is to provide the preparation method of described synergistic urea.
In order to realize purpose of the present invention, fulvic acid chelated nano element synergistic urea of the present invention comprises the component of following weight percent: Xanthohumate 3～8%, nano bamboo powdered carbon 0.1～0.3%, nano titanium powder 0.05～0.2%, anti-caking coating agent 0.15～0.3%, urea 91.55～96.45%.
Wherein, described Xanthohumate is natural potassium fulvate, and its effective constituent is by weight percentage: xanthohumic acid 〉=55.0%, K
2O 〉=10.0%.
The granularity of described nano bamboo powdered carbon is 20～100nm, and it is prepared from for bamboo wood superfine grinding behind high temperature cabonization, can be by commercially available acquisition.
Described nano titanium powder is nanometer anatase titania, and its granularity is 10～80nm, can be by commercially available acquisition.
The components based on weight percentage of described anti-caking coating agent comprises: solid paraffin 15～25%, Sodium dodecylbenzene sulfonate 2～5%, glycerol 3～8%, machinery oil 70～80%.
Synergistic urea of the present invention, it is with Xanthohumate and nano bamboo powdered carbon, nano titanium powder, fully mixes and granulation with the urea of molten state, makes with anti-caking coating agent coating at last.
The present invention also provides the preparation method of above-mentioned synergistic urea, comprises the steps:
A, with the Urea melting, make urea melting liquid, for subsequent use;
B, Xanthohumate, nano bamboo powdered carbon and nano titanium powder are fully mixed; Then evenly mix with the urea melting liquid of step a;
C, the mixed solution spirt prilling tower that step b is made carry out drying, granulation, make the synergistic urea particle;
D, the agent of anti-caking coating is melted under 70～75 ℃ of temperature, then spray on the synergistic urea particle that step c makes, make the fulvic acid chelated nano element synergistic particle.
Wherein, step a adopts steam heating, and temperature is controlled at 120～130 ℃, in order to avoid cause the generation of nitrogen element loss and biuret, the fusion time is 10～20 minutes.
Step c is with behind the melting mixing liquid spirt prilling tower, utilizes freezing air fully dry, the condensation granulating, and the granularity of the synergistic urea particle that makes is 1.18～3.35mm.
Anti-caking coating of the present invention agent, it is that solid paraffin, Sodium dodecylbenzene sulfonate, glycerol and machinery oil are put into isothermal reactor, is heated to 70～75 ℃, mixes reaction 30～40 minutes, and get final product.
Anti-caking coating of the present invention agent can also be united use with amendment class material (such as talcum powder, attapulgite, diatomite etc.).
The present invention adopts Xanthohumate (natural potassium fulvate) as the synergistic component of urea, compare as the complexing synergistic agent of urea with the available technology adopting humic acids, because Xanthohumate is more than the functional group of humate, complex ability is stronger, thereby can form with urea the complex compound of quite stable; Simultaneously, Xanthohumate than humate more the establishment urease activity, delay urea decomposition; The more important thing is, Xanthohumate can effectively promote crop photosynthesis, and only chlorophyllous content just can improve more than 30%; And Xanthohumate than humic acids more easily enter do in the object and effect more lasting.
Photosynthesis is that the carbon atom in the inorganic carbonic acid gas is reduced in itself, the hydrogen atom in the water molecules is transferred on the carbon atom, and solar energy is transformed into the process of chemical energy.Show after deliberation, Xanthohumate has the change of more phenol quinone than humate and promotes photosynthesis, and is as follows:
When phenol becomes quinone, can provide two hydrogen atoms, and quinone and water molecule reaction generate phenol, that is:
More than be phenol quinone change process, the essence of this variation makes water molecules be decomposed into two hydrogen atoms and 1/2 oxygen molecule exactly, and obviously the phenol quinone interconversion reaction of Xanthohumate has played the effect of the catalyzer of water of decomposition.The hydrogen atom that the change of phenol quinone generates more easily carries out photosynthetic response:
O=C=O+2H → H
2CO (formaldehyde)+1/2 O
2
H
2CO (formaldehyde) → C
6(H
2O)
6(glucose)
But the change of monomolecular phenol quinone may occur hardly, and this is to be difficult to regeneration phenol because of quinone.And Xanthohumate is a kind of desirable material that can the change of phenol quinone, and the quantity of phenol quinone almost remains on a fixed value, this may with Xanthohumate in to contain a large amount of free radicals relevant.According to surveying and determination, similar on these two kinds of number of functional groups in the Xanthohumate, all be about 10
21/ g, the change of so many phenol quinone provides hydrogen atom continuously, thereby promotes the carrying out of crop photosynthesis.Xanthohumate can also effectively promote the increase of root system development and root exudates generation, improves crop to absorption and the utilization of nitrogen element.
In addition, the present invention adopts " the chimeric technology of nanometer honeycomb ", mixture with phyteral nano bamboo carbon powder and nano titanium powder, in urea melting liquid with the abundant chelating of Xanthohumate (natural potassium fulvate), in synergistic urea, give full play to the distinctive electricity of nano material, magnetic effect, stimulated crop absorbing the nitrogen element.Domestic and international multinomial result of study shows, titanium elements has magical effect as trace elements to crop yield, the nanometer anatase titania that the present invention uses, very easily absorbed and utilization by crop root, can promote the metabolism of crop, and then improve crop to the utilization ratio of nitrogen element.
In addition, the present invention also utilizes the agent of anti-caking coating that synergistic urea particle skin is sprayed.In the agent of described anti-caking coating, solid paraffin can seal the fertilizer surface, prevents from that the fertilizer internal steam from exosmosing to cause the formation of brilliant bridge, stops simultaneously adhering to of external steam; Anionic surfactant sodium dodecylbenzene sulfonate and consistency modifiers glycerol, namely can improve ductility and the sticking power of anti-caking coating agent when spraying, increase the coating uniformity coefficient, can utilize again the hydrophobic group of Sodium dodecylbenzene sulfonate to prevent entering of external steam.
The invention has the advantages that: fulvic acid chelated nano element synergistic urea of the present invention is a kind of novel nitrogen product, and its energy effective activation soil nutrient promotes crop to absorption, the utilization of nutrient, strengthens the photosynthesis of crop; Can significantly improve the utilization ratio of blood urea nitrogen element, increase crop yield, realize the long-acting and synergy of urea, thereby realize the theory of " energy-saving and emission-reduction and the environmental friendliness " of agriculture field; And preparation method's technique of the present invention is simple, and working condition is gentle and with low cost.
Description of drawings
Fig. 1 is preparation method's of the present invention process flow sheet.
Embodiment
By the following specific examples further illustrate the invention, but be not used for limiting the scope of the invention.Following embodiment is according to technical process shown in Figure 1, the preparation fulvic acid chelated nano element synergistic urea.
Embodiment 1
Anti-caking coating agent pre-prepared: with 20kg solid paraffin, 5kg glycerol, 2kg Sodium dodecylbenzene sulfonate and 73kg machinery oil (46#), put into successively the isothermal reaction still, reaction is 40 minutes under 70 ℃ of conditions, namely gets 100kg anti-caking coating agent viscous liquid.
The preparation of synergistic urea: 930kg urea is transported in the urea melting tank by bucket material machine, utilizes and be steam heated to 125 ℃, heated 15 minutes, make urea melting, then by pressure pump urea melting liquid is transported to the tempering tank at prilling tower top; Then be nano bamboo powdered carbon (the Shanghai sea promise carbon industry company limited of 30nm with 2kg granularity average, down together), 1kg granularity average is nanometer anatase titania (Shanghai Huzheng Nano-Tech Co., Ltd. of 20nm, lower same) and the natural potassium fulvate of 65kg (Taiyuan U.S. nation bio tech ltd, lower same) in blending bin material machine, mix, then be delivered to tempering tank, evenly mix with above-mentioned urea melting liquid; Above-mentioned mixed solution is sprayed into prilling tower, utilize freezing air to its fully dry, condensation granulation, obtain the synergistic urea particle, granularity is 1.18～3.35mm; Again the agent of 2kg anti-caking coating is melted under 70 ℃ of temperature, be sprayed at above-mentioned synergistic urea particle surface through the coating machine high pressure spray nozzle, namely get the synergistic urea finished product.
Embodiment 2
Anti-caking coating agent pre-prepared: identical with embodiment 1.
The preparation of synergistic urea: 915.5kg urea is transported in the urea melting tank by bucket material machine, utilizes and be steam heated to 130 ℃, heated 10 minutes, make urea melting, then by pressure pump urea melting liquid is transported to the tempering tank at prilling tower top; Then be that the nano bamboo powdered carbon of 30nm, nanometer anatase titania and the natural potassium fulvate of 80kg that 0.5kg granularity average is 20nm mix in blending bin material machine with 1kg granularity average, then be delivered to tempering tank, evenly mix with above-mentioned urea melting liquid; Above-mentioned mixed solution is sprayed into prilling tower, utilize freezing air fully dry to it, the condensation granulation obtains the synergistic urea particle, and granularity is 1.18～3.35mm; Again the agent of 3kg anti-caking coating is melted under 75 ℃ of temperature, be sprayed at above-mentioned synergistic urea particle surface through the coating machine high pressure spray nozzle, namely get the synergistic urea finished product.
Embodiment 3
Anti-caking coating agent pre-prepared: 15kg solid paraffin, 3kg glycerol, 2kg Sodium dodecylbenzene sulfonate and 80kg machinery oil (46#) are made by embodiment 1 method.
The preparation of synergistic urea: 959kg urea is transported in the urea melting tank by bucket material machine, utilizes and be steam heated to 120 ℃, heated 20 minutes, make urea melting, then by pressure pump urea melting liquid is transported to the tempering tank at prilling tower top; Then be that the nano bamboo powdered carbon of 30nm, nanometer anatase titania and the natural potassium fulvate of 35kg that 1.5kg granularity average is 20nm mix in blending bin material machine with 3kg granularity average, then be delivered to tempering tank, evenly mix with above-mentioned urea melting liquid; Above-mentioned mixed solution is sprayed into prilling tower, utilize freezing air fully dry to it, the condensation granulation obtains the synergistic urea particle, and granularity is 1.18～3.35mm; Again the agent of 1.5kg anti-caking coating is melted under 70 ℃ of temperature, be sprayed at above-mentioned synergistic urea particle surface through the coating machine high pressure spray nozzle, namely get the synergistic urea finished product.
Embodiment 4
Anti-caking coating agent pre-prepared: 25kg solid paraffin, 3kg glycerol, 2kg Sodium dodecylbenzene sulfonate and 70kg machinery oil (46#) are made by embodiment 1 method.
The preparation of synergistic urea: 964.5kg urea is transported in the urea melting tank by bucket material machine, utilizes and be steam heated to 130 ℃, heated 15 minutes, make urea melting, then by pressure pump urea melting liquid is transported to the tempering tank at prilling tower top; Then be that the nano bamboo powdered carbon of 30nm, nanometer anatase titania and the natural potassium fulvate of 30kg that 2kg granularity average is 20nm mix in blending bin material machine with 2kg granularity average, then be delivered to tempering tank, evenly mix with above-mentioned urea melting liquid; Above-mentioned mixed solution is sprayed into prilling tower, utilize freezing air fully dry to it, the condensation granulation obtains the synergistic urea particle, and granularity is 1.18～3.35mm; Again the agent of 1.5kg anti-caking coating is melted under 70 ℃ of temperature, be sprayed at above-mentioned synergistic urea particle surface through the coating machine high pressure spray nozzle, namely get the synergistic urea finished product.
Below further specify the present invention by test example.
Test example 1 winter wheat-summer corn equivalent test
To the synergistic urea of the embodiment of the invention 1, during in October, 2008～2009 year October, carry out field test on farm, the He Beima village, the moisture soil great soil group, the soil texture is silt.Beginning on October 15th, 2008 Winter Wheat Planted (kind Y119), summer corn was gathered in the crops in winter wheat and summer corn (Zheng Dan 958) crop rotation on October 18th, 2009.Test three repetitions, adopt randomized block design, residential quarter area 334m
2, establish following 3 processing:
CK is blank: inapplicable nitrogenous fertilizer, only use phosphorus, potash fertilizer;
T1 processes: use common urea (first grade), winter wheat plantation season amount of nitrogen is 225kgN/hm
2, 1/2 makes base manure, and 1/4 turns green imposes, and 1/4 jointing stage imposed; Summer corn plantation season amount of nitrogen is 180kg N/hm
2, 1/2 makes base manure, and 1/2 typhon mouth phase imposed;
T2 processes: use the synergistic urea of embodiment 1 preparation, amount of nitrogen is processed with T1, all makes base manure.
Each processes phosphorus, Potassium Fertilizer is identical with local custom, all makes base manure.The result is shown in table 1～8.
Table 1 different fertilizer is processed winter wheat yields and the interpretation of result of nitrogen element utilization ratio
Table 2 different fertilizer is processed Yield Components of Winter Wheat
Table 3 different fertilizer is processed the impact on Winter wheat quality
Can find out from table 1～3, compare with using the common urea processing, use the winter wheat yields raising 17.3% that synergistic urea of the present invention is processed, difference is extremely remarkable, and nitrogen element utilization ratio improves 12.7%; Plant height, spike length, spikelet number, grain number per spike and thousand seed weight equal yield line constituent element obviously increase, and improve respectively 8.5%, 8.5%, 5.9%, 35.3% and 15.6%, for the volume increase of winter wheat is laid a good foundation.The result shows, being applied in when promoting the winter wheat volume increase of synergistic urea of the present invention is conducive to the raising of Winter wheat quality, and grain protein, wet gluten and aminoacids content improve respectively 2.7%, 12.2% and 10.1%.
Table 4 different fertilizer is processed yield of Summer Corn and the interpretation of result of nitrogen element utilization ratio
Table 5 different fertilizer is processed the yield of Summer Corn constituent element
Table 6 different fertilizer is processed the impact on the summer corn quality
Can find out from table 4～6, use synergistic urea processing of the present invention and compare with using the common urea processing, yield of Summer Corn improves 20.6%, and difference is extremely remarkable, and nitrogen element utilization ratio improves 15.1%; Spike length, grain number per spike and thousand seed weight equal yield line constituent element obviously increase, and improve respectively 15.2%, 17.3% and 17.7%, and bald point is long to reduce by 15.0%.The result shows, uses synergistic urea processing of the present invention and promotes the quality of summer corn to significantly improve, and protein, fat, starch and aminoacids content improve respectively 8.9%, 3.4%, 12.1% and 10.2%.
Table 7 different fertilizer is processed 0～120cm soil body nitric nitrogen accumulation volume (kg/hm
2)
Table 8 different fertilizer is processed the apparent leaching rate of soil profile nitric nitrogen (%)
Table 7～8 have been compared through two in field crop after growth season, use 0～120cm soil body Nitrate-nitrogen accumulation and the apparent leaching rate of synergistic urea of the present invention and common urea, the result shows, synergistic urea of the present invention is processed the Nitrate-nitrogen accumulation of 0～120cm soil body and is used common urea processing reduction by 56.9%, and apparent leaching rate reduces 72.8%.As seen, compare with using conventional urea, the leaching loss intensity of using nitrogen element in the obvious reduction soil body of synergistic urea, thus effectively reduce the risk that Nitrate content in ground water exceeds standard, when improving nitrogen element utilization ratio, have important environmental benefit.
The test of test example 2 spring maize decrements
In May, 2009～2009 year October, the township carries out field test in the Yushu city in Jilin province belt, the black earth great soil group, and the soil texture is loam.Plantation on May 6th, 2009, on October 11st, 2009 gathered in the crops.The spring maize kind is elder generation's jade 335, planting density 65000 strains/hm
2Test three repetitions, adopt randomized block design, residential quarter area 667m
2, establish following 3 processing:
CK is blank: inapplicable nitrogenous fertilizer, only use phosphorus, potash fertilizer;
T1 processes: use common urea (first grade), amount of nitrogen is 225kg N/hm
2, 1/2 makes base manure, and 1/2 jointing stage imposed;
T2 processes: use the synergistic urea of embodiment 1 preparation, amount of nitrogen 180N/hm
2, all make base manure.
Each processes phosphorus, Potassium Fertilizer is identical with local custom, all makes base manure.The result is shown in table 9～10.
Table 9 different fertilizer is processed Spring Corn Yield and the interpretation of result of nitrogen element utilization ratio
Table 10 different fertilizer is processed the Spring Corn Yield constituent element
Can find out from table 9～10, use synergistic urea of the present invention and process the Spring Corn Yield raising 17.7% of using the common urea processing, difference is extremely remarkable, and nitrogen element utilization ratio improves 20.5%; Use synergistic urea of the present invention and be conducive to the increase of spike length, grain number per spike and thousand seed weight equal yield line constituent element, improve respectively 10.6%, 6.4% and 9.0%, reduced by 27.8% and bald point is long.The result shows, uses synergistic urea of the present invention and can reduce nitrogen fertilizer amount and impose number of times, has realized that effectively nitrogenous fertilizer subtracts the target of executing synergy.
The test of test example 3 paddy rice decrements
Carry out field test on river and mountain farm, Huachuan County, Heilongjiang Province year October in April, 2009～2009, the black earth great soil group, the soil texture is pickled rice soil.On April 18th, 2009 grew seedlings, rice transplanting on May 16, and planting density is 29.7cm * 13.2cm, 3～4 strains of every cave.Subregion species test after the paddy rice maturation, survey are produced, subregion harvesting on October 20, shelling.Rice varieties is east farming 429, tests three repetitions, adopts randomized block design, residential quarter area 667m
2, establish following 3 processing:
CK is blank: inapplicable nitrogenous fertilizer, only use phosphorus, potash fertilizer;
T1 processes: use common urea (first grade), amount of nitrogen is 180kg N/hm
2, 1/4 makes base manure, and 1/4 makes dressing of turnning green stage, and 1/4 primary tillering is fertile, 1/4 secondary tillering fertilizer;
T2 processes: use the synergistic urea of embodiment 1 preparation, amount of nitrogen 144N/hm
2, 1/2 makes base manure, and 1/2 makes dressing of turnning green stage.
Each processes phosphorus, Potassium Fertilizer is identical with local custom, all makes base manure.The result is shown in table 11～12.
Table 11 different fertilizer is processed rice yield and the interpretation of result of nitrogen element utilization ratio
Table 12 different fertilizer is processed the rice yield constituent element
Can find out from table 11～12, subtract under the condition of executing 20% nitrogen element consumption, use synergistic urea of the present invention and process the rice yield raising 14.9% of using the common urea processing, difference is extremely remarkable.Nitrogen element utilization ratio improves 22.7%; Use synergistic urea of the present invention and be conducive to the increase of spike number, grain number per spike, setting percentage and thousand seed weight, improve respectively 10.3%, 9.7%, 4.7% and 1.7%.The result shows, uses synergistic urea of the present invention and can reduce nitrogen fertilizer amount, improves nitrogen element utilization ratio, embodies good economic benefit and environmental benefit.
Claims (10)
1. fulvic acid chelated nano element synergistic urea, it is characterized in that: described synergistic urea comprises the component of following weight percent: Xanthohumate 3～8%, nano bamboo powdered carbon 0.1～0.3%, nano titanium powder 0.05～0.2%, anti-caking coating agent 0.15～0.3%, urea 91.55～96.45%.
2. synergistic urea according to claim 1 is characterized in that, described Xanthohumate is natural potassium fulvate, and its effective constituent is by weight percentage: xanthohumic acid 〉=55.0%, K
2O 〉=10.0%.
3. synergistic urea according to claim 1 is characterized in that, the granularity average of described nano bamboo powdered carbon is 20～100nm.
4. synergistic urea according to claim 1 is characterized in that, described nano titanium powder is nanometer anatase titania, and its granularity average is 10～80nm.
5. synergistic urea according to claim 1 is characterized in that, the components based on weight percentage of described anti-caking coating agent comprises: solid paraffin 15～25%, Sodium dodecylbenzene sulfonate 2～5%, glycerol 3～8%, machinery oil 70～80%.
6. the described synergistic urea of any one according to claim 1-5, it is characterized in that, described synergistic urea, it is with Xanthohumate and nano bamboo powdered carbon, nano titanium powder, fully mix and granulation with the urea of molten state, make with anti-caking coating agent coating at last.
7. prepare the method for the described synergistic urea of claim 1-6 any one, it is characterized in that, comprise the steps:
A, with the Urea melting, make urea melting liquid, for subsequent use;
B, Xanthohumate, nano bamboo powdered carbon and nano titanium powder are fully mixed; Then evenly mix with the urea melting liquid of step a;
C, the mixed solution spirt prilling tower that step b is made carry out drying, granulation, make the synergistic urea particle;
D, the agent of anti-caking coating is melted under 70～75 ℃ of temperature, then spray on the synergistic urea particle that step c makes, make the fulvic acid chelated nano element synergistic urea particle.
8. preparation method according to claim 7 is characterized in that, step a adopts steam heating, and temperature is controlled at 120～130 ℃, and the fusion time is 10～20 minutes.
9. preparation method according to claim 7 is characterized in that, step c is with behind the melting mixing liquid spirt prilling tower, utilizes freezing air fully dry, the condensation granulating.
10. preparation method according to claim 7 is characterized in that, the granularity of synergistic urea particle is 1.18～3.35mm among the step c.
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| CN102653488A (en) * | 2011-03-02 | 2012-09-05 | 郭庆华 | Water-retention slow-releasing carbon-based compound fertilizer |
| CN102557822B (en) * | 2011-12-13 | 2013-11-13 | 福州超大现代农业发展有限公司 | Method for preparing urea peroxide containing organic titanium by recrystallization process |
| CN102838424A (en) * | 2012-10-08 | 2012-12-26 | 黑龙江北大荒农业股份有限公司浩良河化肥分公司 | Biological humic acid urea |
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| CN103641636B (en) * | 2013-12-21 | 2015-02-11 | 李俊 | Nano light carbon agent and preparation method thereof |
| CN104072312A (en) * | 2014-05-30 | 2014-10-01 | 明光市业兴非金属材料厂 | Nano titanium powder synergic fertilizer and preparation method thereof |
| CN104193536B (en) * | 2014-09-22 | 2016-03-23 | 广东省农业科学院农业资源与环境研究所 | A kind of charcoal base stability Chemical Mixed Fertilizer and preparation method thereof |
| CN104387179A (en) * | 2014-11-12 | 2015-03-04 | 苏州市新巷农艺科技园 | Antibacterial nutrient liquid for flowers and plants and preparation method thereof |
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| CN106380314A (en) * | 2016-08-31 | 2017-02-08 | 天津市施易得肥料有限公司 | Insect-proofing charcoal rot slow-release urea |
| CN106800460A (en) * | 2017-01-13 | 2017-06-06 | 深圳市芭田生态工程股份有限公司 | Fertilizer synergist containing middle trace element and preparation method thereof |
| CN108395317A (en) * | 2018-02-06 | 2018-08-14 | 南宁学院 | A kind of modifying agent and preparation method thereof suitable for basic soil |
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