CN1063166C

CN1063166C - coating synergistic urea

Info

Publication number: CN1063166C
Application number: CN96107706A
Authority: CN
Inventors: 原俊钦; 池静波
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-05-19
Filing date: 1996-05-19
Publication date: 2001-03-14
Anticipated expiration: 2016-05-19
Also published as: CN1165801A

Abstract

The product is a composite nitrogen fertilizer formed by coating a special liquid film on the surface of urea and curing, and the process comprises two steps of chemical film coating liquid and physical coating: the coating liquid is formed by complexing inorganic and organic matters. They are divided into monarch, minister, guide, adjuvant: the element N is monarch, the medium and trace elements are ministers, the composite multifunctional complexing agent and the slow release agent are guides, and the element K, P is an adjuvant. The new development trend of slow-release, scientific, high-efficiency, compound and quantitative fertilizers is met; the HA and the amino acid are added, so that the HA and the amino acid are far superior to the like products; there are two coating modes for different scales. The product has the agricultural and chemical functions of slow effect, synergy, quality improvement, soil improvement, stress resistance and growth stimulation.

Description

Coated synergistic urea

The existing coated material that is coated with membranous type fertilizer can be divided into three major types, function singleness.

(1) thermoplastic resin: PE, PVC, PP, DVAC etc.;

(2) thermosetting resin: resol, pure phenol resins;

(3) inorganic salt and sulphur: sulphur ammonium, phosphorus ammonium, sulphur etc.

Having occurred three kinds of technologies on the production technique is: (1) is added urease inhibitor and is produced long-acting carbamide in common urea; (2) in urea production, add trace element and produce long-acting carbamide; (3) in urea, add benzene 2 phenol production long-acting carbamide.

Estimate that according to world FAO 50% of world's grain yield is obtained by chemical fertilizer.Nitrogen fertilizer amount occupies first of the chemical fertilizer again, and urea is the outstanding person in the nitrogenous fertilizer.Its nitrogen content is the main source of manure of agricultural up to 46.3%.But it is the unit quick-acting fertilizer after all, and the N utilization ratio is low, and its utilization ratio has only 36% according to the study, and the serious situation that China has occurred is that the height fertilising of agricultural is uneven, hangs down utilization rate of fertilizer, has become a major issue of agriculture production.

Current chemical fertilizer industry constantly develops, and just the direction towards scientific, high efficiency, slowization, quantification, compoundization, customizations develops, and new-type fertilizer arises at the historic moment.The proposition of coated synergistic urea project is fertile kind of the disconnected type of a slow, synergy of developing for the new trend that adapts to the chemical fertilizer industrial development, the background of our project verification that Here it is.

We are at the guiding theory of project verification: 1, from inquiring into the rational application of fertilizer, start with and do research from improving the fertilizer benefit.The rational application of fertilizer is divided three aspects: revolve fertile method, fertilizing time, rate of fertilizer application.On fertilizing method, divide two contents again: adjust the fertilising position and change the fertilizer moulding.We hold on to " changing the fertilizer moulding " this key, and this new-type fertilizer is studied, and have succeeded in developing the NEW TYPE OF COMPOSITE nitrogenous fertilizer-coated synergistic urea with individual style finally.

2. we are round high Fertilization Level of China's present stage, major issue in low this agriculture production of utilization rate of fertilizer, the important source of manure that contains N at this height of urea carries out " changing the fertilizer moulding ", makes it to increase the fertilising benefit, reduce urea fertilization, improve its utilization ratio.Urea belongs to the acyl ammonium fertilizer, is manured into soil, necessary nitrated one-tenth nitric nitrogen earlier, or be hydrolyzed into ammonium nitrogen, can be utilized by plant absorbing.Its utilization ratio only 36% in order further to improve its nitrogen use efficiency, is improved fertilizing method, from factory, in industrial production, just solve the problem of the rational application of fertilizer, scientific research and agriculture production combine, improve utilization rate of fertilizer, reach the purpose that improves the fertilizer benefit to the greatest extent.Our overall goal that Here it is and process program design phiolosophy.At present, research in this respect both at home and abroad is a lot of, makes a general survey of the most function singleness of additive method, the cost height, and complex process, investment is high.One of production technique:

The first step: in reactor A, add 535 kilograms of tap water, the start running, the anionic PAM that slowly adds 3,000,000 son amounts: 30 kilograms, edible Gelatinum oxhide: 15 kilograms, (the reinforced time was controlled at about 15 minutes), stir and it was fully dissolved in 60 minutes, beginning feeds 0.5MPa in reacting kettle jacketing steam-heated cal(l)andria to 80 degree constant temperature stirred 60-90 minute.Add 85%H ₃PO ₄: 45 kilograms.

Second step: Ensure Liquid element: (always the reinforced time was controlled at 15 minutes) adds MgSO slowly in reactor A ₄7H ₂The O:15 kilogram, MnSO ₄4H ₂The O:15 kilogram, H ₃BO ₃: 15 kilograms.And (NH ₄) ₆Mo ₇O ₂₄4H ₂The O:15 gram, CuSO ₄7H ₂O): 80 grams, CoSO ₄7H ₂The O:150 gram, the KHA:20 kilogram, constant temperature stirs 30 minutes (complexing), KH ₂PO ₄: 19 kilograms, activator Na ₃PO ₄: 2 kilograms, the EDTA disodium salt: 10 kilograms, intensification 90-95 degree stirs 60 minutes (secondary complexing).

The 3rd step: add 200 kilograms in tap water in reactor B, start is turned round and feed 0.5MPa steam in reacting kettle jacketing and is warmed up to 35 degree, slowly adds 60 kilograms in urea, FeSO ₄7H ₂O:65 kilogram ZnSO ₄7H ₂The O:15 kilogram, constant temperature stirred 60 minutes.Import among the reactor A (final complexing) constant temperature then and stirred 30 minutes, stop vapour and feed water quench to 60 degree and shut down and take the dish out of the pot, get product---coating liquid.Two of production technique:

The first step: in reactor A, add 535 kilograms of tap water, the start running, the anionic PAM that slowly adds 3,000,000 molecular weight: 15 kilograms, edible Gelatinum oxhide: 15 kilograms, (the reinforced time was controlled at about 7-10 minute), stir and it was fully dissolved in 60 minutes, beginning feeds 0.5MPa in reacting kettle jacketing steam-heated cal(l)andria to 80 degree constant temperature stirred 60-90 minute.

Second step: Ensure Liquid element: (always the reinforced time was controlled at 15 minutes) adds MgSO slowly in reactor A ₄7H ₂The O:15 kilogram, MnSO ₄4H ₂The O:15 kilogram, H ₃BO ₃: 13 kilograms, and (NH ₄) ₆Mo ₇O ₂₄4H ₂O:15 restrains CaSO ₄7H ₂O; 80 grams, CoSO ₄7H ₂The O:150 gram, KHA:15 kilogram, 30%P ^H=5 amino acid: 15 kilograms, constant temperature stirs 30 minutes (complexing) KH ₂PO ₄: 10 kilograms, tensio-active agent: Na ₂PO ₄: 2 kilograms, the EDTA disodium salt: 10 kilograms, the jin 90-95 degree that heats up stirs 60 minutes (secondary complexing).

The 3rd step: add 200 kilograms in tap water in reactor B, the start running also adds at reactor and to feed 0.5MPa steam in the cover and be warmed up to 85 degree, slowly adds 60 kilograms in urea, FeSO ₄7H ₂The O:65 kilogram, ZnSO ₄7H ₂O:15 kilogram constant temperature stirred 60 minutes, imported then that (final complexing) constant temperature stirred 60 minutes among the reactor A, stopped vapour and fed water quench to 60 degree and shut down and take the dish out of the pot, and got product---coating liquid.Three of production technique:

The first step: in reactor A, add 535 kilograms of tap water, the start running, the anionic PAM that slowly adds 3,000,000 molecular weight: 20 kilograms, edible Gelatinum oxhide: 20 kilograms, (the reinforced time was controlled at about 8-12 minute) stirred and it fully dissolved in 60 minutes, beginning can be gone into steam-heated cal(l)andria to 80 degree of 0.5MPa in reacting kettle jacketing, constant temperature stirred 60-90 minute.

Second step: Ensure Liquid element: (always the reinforced time was controlled at 15 minutes) adds 85%H slowly in reactor A ₂PO ₄: 5 kilograms, MgSO ₄7H ₂The O:13 kilogram, MgSO ₄4H ₂O:80 kilogram, and H ₃BO ₃: 10 kilograms, (NH ₄) ₆Mo ₇O ₂₄4H ₂The O:15 kilogram, CuSO ₄7H ₂O:80 gram, and CoSO ₄7H ₂The O:150 gram, KHA:15 kilogram, 30%P ^R=5 amino acid: 15 kilograms, constant temperature stirs 60 minutes (complexing) K ₂SO ₄: 16 kilograms, activator: Na ₂PO ₄: 2 kilograms, the EDTA disodium salt: 10 kilograms, intensification 90-95 degree stirs 60 minutes (secondary complexing).

The 3rd step: add 200 kilograms in tap water in reactor B, start is turned round and feed 0.5MPa steam in reacting kettle jacketing and is warmed up to 85 degree, slowly adds 60 kilograms in urea, FeSO ₄7H ₂The O:65 kilogram, ZnSO ₄7H ₂O:15 kilogram constant temperature stirs 60 public clocks.Import among the reactor A (final complexing) constant temperature then and stirred 60 minutes, stop vapour and feed water quench to 60 degree and shut down and take the dish out of the pot, get product---coating liquid.

On a small scale: stir in JDY-350C type stirrer with the coating liquid of urea amount 7/1000ths to 8 and urea and promptly to make coated synergistic urea, product test quality index such as table 1 in 2 minutes.

On a large scale: the spray equipment of a cover spray coating liquid on be in prilling tower, other has design.Table 1 product detected result

Fig. 1, Fig. 2 can illustrate:

1. outstanding N word is along the exploitation of a N font exploitation direction.

(1). we at target be: solve the present high Fertilization Level of China, the agriculture major issue of low fertilizer benefit.

(2). we are at institute's study route: along the rational application of fertilizer, and---------improving nitrogen use efficiency and effect of fertilizer---develops two-supremes one excellent agricultural to fertilizing method to change the fertilizer moulding.

(3). we are at the direction of development: the direction along the new type nitrogen fertilizer of scientific, slowization, long-actingization, compoundization, quantification is developed.

2. technological process: under the condition that does not change urea technique, with the simplest, most economical, the physical method of less investment instant effect and chemical process process combined are produced coated synergistic urea, and economical rationality is solely set one.

3. our target is: both can improve urea and render a service, can improve the double goal of urea benefit again.Make product quantification slowization, high efficiency, scientific, the characteristics of compoundization, the new trend of catering to the chemical fertilizer development.For development two-supremes one excellent agricultural provides good fertilizer.

4. on prescription is formed: the measure that we have adopted fertilizer to combine with inorganic fertilizer, not only change the fertilizer moulding, and changed the agricultural voltinism energy of fertilizer, the function that is had on the land fertility is simply fantastic cultivating.

5. choosing at sustained release dosage: we adopt a kind of multifunctional slow-release agent, and it has the slow release long-acting performance, have the ability of improving the soil again, also have the effect of complexing agent, and do not cause soil pollution, and are how sharp harmless, achieve many things at one stroke.

6. selecting for use at complexing agent: adopted multi-functional compound complex agent, they divide monarch, minister, make, help, harmoniously, have outside the interior complexing action, also provide for crop: organic matter, soil improvement agent, somatomedin nutritive element etc., its function is many, the chemically stable constant is big, the complexing wide ranges increases the solubleness of nutritive element, helps crop and absorbs.

Therefore it is different from like product, obviously is better than like product.

The achievement that obtains

1. coated synergistic urea makes the nitrogen use efficiency of urea bring up to 42-45% from 36%, promptly improves 6-9 percentage point.

2. because coated synergistic urea makes the change of the moulding of urea, urea become by single fertilizer kind for nitrogen to be that a composite nitrogen fertilizer is fertile plant, it not only can be long-acting, synergy can be improved the soil again, improve crop quality.

3. it has multiple degeneration-resistant function: anti-saline and alkaline, cold-resistant, drought resisting, anti-denitrification, anti-ly harden, resistant to lodging, comprehensive resistance such as disease and insect resistance, anti-leaching loss, anti-volatilization.

4. owing to added HA and multiple nutritive element, coordinate it is not only increased production obviously mutually, and have the characteristic of the quality of raising agricultural-food, now make a concrete analysis of as follows through chelating:

A. the application of each nutritive element in coated synergistic urea:

As everyone knows, crop to the element consumption big have three kinds: N, P, K.These three kinds of elements be it is called the azophoska of promptly often saying for major fertilizer elements, and the demand of Ca, Mg, S, Fe is taken second place, and is called as moderate-element, and Mn, Mo, Zn, B, Cu, Co etc. often are called as trace element.All have in this fertilizer, and our product design designs as general composite nitrogen fertilizer, some crop is special procured element, we without a moment's thought.And these elements are the necessary nutritive elements of various crops, each have their own physiological function in making object.Therefore, they are of equal importance, and we satisfy must adding of crop to fill a prescription, in the hope of synergy.These elements are manured into soil easily by soil fixing, and utilization ratio is low, and we have carried out chelating with them, to improve their utilization ratio according to the principle of " complex compound of some metallic element can improve its solubleness in water ".

(1) Fe:Fe is to the Physiology and biochemistry effect of crop:

Fe makes indispensable element in the object inner chlorophyll forming process, is again to make multiple nitrogenize enzyme in the object, the integral part of beans protoheme and nitrogenase.Therefore, Fe influences the sorption of crop, photosynthesis and nitrate reduction, the amount of nitrogen fixation of root nodule bacterium is increased, and plant is vigorous, so add-on is many in this prescription, moreover we become urea iron and tertiary iron phosphate to its complexing, urea iron is a kind of new variety, and tertiary iron phosphate is a kind of highly stable inner complex, is difficult for being fixed by soil.We allocate this fertilizer into the form of chelated iron, save sequestrant to reduce production costs, and this is one of our distinctive feature.

(2) Mg: contain MgO amount 2.32% in the brown desert soil of Xinjiang, crop only is 20% of K amount to the demand of Mg, but crop is very weak to the receptivity of magnesium, and with K antagonistic action is arranged, and excessive K can show magnesium deficiency.Magnesium also has antagonistic action with Mn, with P the coordination synergism is arranged.And Xinjiang soil is rich K soil, and well-known, magnesium ion is more active, be convenient to spread and transport, so we add magnesium, it and photosynthesis have substantial connection, it is not only chlorophyllous important component part, and participates in the fixed action of carbonic acid gas, can activate the enzyme of carton dioxide assimilation.So we have also added a considerable amount of Mg.

(3) S: we fill a prescription with the form adding of sulfate radical, and amount is also considerable, and it is organic important component part.Under the situation of executing at present net N, P, K in a large number, sulfate radical-free again in the urea of usefulness, and P in the soil in Xinjiang ^HUp to about 8.9, we consider in the possibility of Xinjiang a lack of sulfur too big, because matrix is through long-term weathering in the soil, the very difficult decomposition of residual S is made for thing and absorbs again, and crop needs the S amount will account for the 1/10-1/5 of N, rape in peanut, cotton, the cruciate flower crop, crops such as clover need the S amount the highest, are cereal secondly, herbage etc., and the root of crop mainly absorbs sulphur with the form of sulfate radical, and crop is obviously increased production, still to allocate it into be rational.

(4) Mn: manganese is that the crop normal growth is grown one of necessary trace element, it is the activator of plurality of enzymes in the plant materials, can promote chlorophyllous formation, participate in photosynthesis, the assimilation of carbohydrate, it all is indispensable in the decarboxylation in the nutrition of amino nitrogen, nitrate transforms and hydration, pretends the thing indispensable Mn that grows.Field crops such as wheat, paddy rice, corn, peanut, soybean, cotton, tobacco, apple, tomato, potato, beet all need Mn, so we add more Mn.

(5) Zn: zinc is that the crop normal growth is grown one of necessary trace element, it is the composition of some enzymes, the division and the photosynthesis that participate in the synthetic and cell of growth hormone Yeast Nucleic Acid concern very close, it participates in the conversion of carbohydrate, promote chlorophyllous formation, the more important thing is that it can improve diseases and insect pests resistance of crops, improve the anti-salt property of crop, promote seed germination, increase output, particularly important in the north, so the Zn that adds in our prescription amount is also considerable, we allocate this fertilizer into the form of urea zinc, to save the sequestrant of high price, urea zinc is again a kind of new fertile kind, can directly fertilize the soil, this also is our distinctive feature.

(6) B:B is one of necessary nutritive element of crop, and especially Cruciferae such as rape also have cotton, wheat, corn, fruit tree, peanut, beet, Chinese cabbage etc. that tangible production-increasing function is all arranged.It and Ca have antagonistic action, and it and N have coordinative role.Execute B and can promote the absorption of crop N, improve the utilization ratio of N, to grain, cotton, oil, sugar, really, dish all has production-increasing function in various degree, wherein remarkable with effect of increasing production such as rape, cotton, apples, barley, wheat, paddy rice because it has the lignified effect of the root system of impelling, there are good lodging tolerance and effect of increasing production.So we also take much count of the effect of this element, the amount of allocating into is decided according to calcium boron ratio in crop and the soil.

(7) Mo: the soil in the north belongs to alkaline earth ground, the P that has more ^HValue reaches about 8.9, its Mo content, and than the relative much less of other soil properties, and water-soluble Mo is still less, so we have allocated molybdenum element into.But molybdenum and nitrogen fixation relation are very close, are the necessary trace elements of plant.It is also relevant with nitro N reduction, when plant reduces with nitro N, has Mo could reduce ammonium N.This is because Mo is the integral part and the activator of nitrate reductase.Molybdenum can promote the utilize level of crop to N.It can also promote the assimilation of carbon element, to improve absorption and the conversion of crop to carbonic acid gas.The most responsive crop of Mo is pulse family and Cruciferae, also has Gramineae.Mo has coordinative role to phosphorus sulphur, and the absorption of mutually promoting is said a kind of general fertilizer and just seemed important so add Mo, so we have gone out to allocate into an amount of Mo.

(8) Cu: copper has been regarded as the needed trace element of crop for a long time, and it has hormesis to plant growth.The a large amount of P fertilizer of long-term application can make copper and P form insoluble phosphoric acid salt, cause to lack the copper phenomenon, and the eroded effective copper content of aeolian sandy soil of water erosion of the Northwest is lower, and P ^HCopper precipitates with copper hydroxide in the high soil, and effectively Cu reduces.Crop is little to the consumption of copper, but in this ecotope for satisfy needing the copper crop as the needs of wheat, onion, lettuce, spinach, barley, oat, cauliflower, Radix Dauci Sativae, Sunflower Receptacle, potato, beet, clover, Bao Xinlai, cucumber, radish, tomato etc., we have to allocate into copper, though consumption is little, must mend in season in season.

(9) Co: the relation of cobalt and crop shows mainly on the leguminous plants that it is very big to the solid N effect of the root nodule bacterium of leguminous crop.Cobalt can improve the solid N enzymic activity of root nodule bacterium, strengthens the effect of solid N.Effect is also quite big on herbage, but especially in the alkaline soil network cobalt very low, we are in the pastoral area and also add little cobalt in this fertilizer.

Each element is all through being sequestered in this fertilizer, so its utilization ratio just is different from the effectiveness and the action time of direct adding in sum.

B, HA add the effect in this fertilizer:

We have allocated a considerable amount of HA in this product, and this is the another characteristics that we fill a prescription, because HA has following vital role on agricultural:

(1) HA is good soil improvement agent:

HA can improve the ventilation property of soil, water-retentivity, water-permeable, the P of correction soil ^HValue, the nutritive element of increase soil, the organic nutrient and the moisture of increase soil are adjusted redox reaction, and have the effect of disease and insect resistance, so HA is a kind of multi-functional good soil improvement agent.

(2) infertile field of HA effect:

HA is a kind of organism, also contains various trace elements (chatting before the infertile field effect of these elements) except that containing P, N, K, Mg, O, Ca, S.Itself is a kind of excellent organic fertilizer, and it also contains functional groups such as hydroxyl, methyl, carbonyl, alcoholic extract hydroxyl group.These functional groups can control the dissociation equilibrium of phosphorus in the soil; The invalid phosphorus of fixed in the soil is dissociated into water-soluble phosphorus by plant absorbing, makes this fertilizer have phosphate solubilization, equaled to join suitable phosphate fertilizer, played the effect of composite fertilizer.Because it can prevent phosphorus by soil fixing, promote the absorption of crop to phosphorus, promote crop root to grow, increase the activity of microorganism in the soil, quicken organic corruption, improve available phosphorus concentration, for plant utilization.HA also has the chelation of sequestrant, and the trace element in the soil is stung by it and closed and not by soil fixing.Make plant micro-more effective the absorbing in the soil, impel the healthy and strong growth of crop.It can also generate humic urea with urea complexation and play long-acting, improves the urea utilization ratio.Its also adsorbable metal ion also can play and effectively utilize effect of trace elements in addition.So the effect of the infertile field of HA is that many-sided effect is remarkable.

(3) HA plays growth-stimulating to crop:

HA can increase the activity of the intravital metabolic process of plant, and the stimulating plant growth promotes the root nodule bacterium growth, promotes plant root system development, regulates plant growth, and plays effect resistant to lodging.

(4) action of agricultural chemicals that has of HA:

HA can be used as a kind of pesticide with insecticidal function and uses, and can be used as the plant physiology disease and gives anti-agent etc. and be used for agricultural.Because the above-mentioned functions of HA, this fertilizer add HA and just this fertilizer become organic and inorganic fertilizer, it makes this fertilizer performance better, and fertilizer efficiency is higher.Economic benefit and social benefit are also all fairly obvious, still allocated an amount of HA into.

Similar technology contrast both domestic and external

1, on production method be with the one of different of the fertilizer of filming both at home and abroad: the production method that we have adopted physical method and chemical process to combine, with chemical legal system coating liquid, film with the physics method.Method is simple, does not change urea production process and equipment, reduced investment, and instant effect, cost is low.

2, the existing coated material that is coated with membranous type fertilizer can be divided into three major types, function singleness.

(1) thermoplastic resin: PE, PVC, PP, DVAC etc.;

(2) thermosetting resin: resol, pure phenol resins;

And the coated material that we adopt is organic and inorganic the combination, particularly adding has HA and specially selects the amino acid that adds, this be all inquire about both at home and abroad less than, their matching property is very superior, synergy, slow are arranged, improve the soil, improve quality, effect such as degeneration-resistant, stimulating growth, agricultural chemicals, and function is many.

3, we have adopted nearly five kinds more than multi-functional complexing agent, and this also is that we are exclusive, they compound, and cost is low, and complex performance is good, and stability is high.

4, our the many kinds of industrial chemicals medicament of selection all have multifunctionality, the effect, the effect of raising fertilizer efficiency, slow releasing function, action of agricultural chemicals, the effect of improving the soil that have complexing agent when having, less investment, function is many, so our product application effect is far superior to like product.

5, we have added an amount of P, K element in prescription, make it to coordinate absorption and the utilization of N, add assisting a ruler in governing a country of each nutritive element, make urea that the performance of composite fertilizer be arranged, having catered to scientific, slowization, synergyization, the quantification of chemical fertilizer development, the general trend of compoundization, also is our distinctive feature.

6, existing three kinds of technologies are on the production high technology: (1) is added urease inhibitor and is produced long-acting carbamide in common urea, and (2) are added trace element and produced long-acting carbamide in urea production; (3) add in urea benzene 2 phenol production long-acting carbamide, our production technique is then different fully with them.

We have the synergy slow compared with similar products in sum, improve the soil, and are degeneration-resistant, and growth-stimulating improves the multi-functional of crop quality, still be its called after coated synergistic urea.

Economic and Efficiency Analysis (is example with 10,000 t/a)

1. scale: 10,000 t/a

2. investment: 80,000 yuan of costs of equipment, civil engineering 200-300M ², 500,000 yuan of current assetss

3. the output value: 2,500,000 yuan/a

4. cost: tip heigh: 105.5 ten thousand yuan/the a unit cost: 105.5 yuan/t

Raw materials cost wherein: 35.58 yuan/t of 35.58 ten thousand yuan/a

Packing: 7.5 yuan/t of 7.5 ten thousand yuan/a

Power: 0.01 yuan/t of 0.01 ten thousand yuan/a of water

0.45 yuan/t of 0.45 ten thousand yuan/a of electricity

0.21 yuan/t of 0.21 ten thousand yuan/a of steam

Wage and additional: 19.24 yuan/t of 19.24 ten thousand yuan/a

Manufacturing expense: 38.53 yuan/t of 38.53 ten thousand yuan/a

Financial expense: 4.08 yuan/t of 4.08 ten thousand yuan/a

Add up to: 105.4 yuan/t of 105.4 ten thousand yuan/a

5. 144.6 yuan/t of ten thousand yuan/a of profits tax: 250-105.4=144.6

6. value added tax: 25.62 yuan/t of 25.62 ten thousand yuan/a

7. net income: 118.98 yuan/t of 118.98 ten thousand yuan/a

The characteristic of product and the effect on agricultural

1. efficient: because the effect of coating adhesive compound makes its adsorptive power greater than common urea, be difficult for loss in therefore being manured into soil, improved soil for the nitrogen ability, be its one of reason efficiently; Its denitrification weak (denitrification to be microorganism nitrate be reduced into gaseous state nitride or gaseous nitrogen and cause the process of nitrogen loss), its denitrification is less than common urea, thereby the nitrogen that is stored in the soil is more during urea than executing with amount, make soil that higher nitrogen concentration be arranged in a long time, for crop in soil, absorb enough nitrogen create good condition be its former efficiently therefore two; Since it be chelated with multiple in, micronutrient element, can promote the plant harmonic growth to grow, can improve crop quality again and be its former efficiently therefore three; It in soil because the provide protection of coating colloid thing reduces its leaching loss amount, nitrogen use efficiency contrast common urea can improve 6-8% be its former efficiently therefore four; Because its high efficiency can be economized on fertile 10-15%, coated synergistic urea promptly per ton is equivalent to the effectiveness of 1.1-1.15% ton common urea.

2. long-acting: improve the soil and can discharge mild colloid coated material because we have adopted to have, make it have the characteristics of slow release, its fertilizer efficiency is doubled about, can make overfertilization not in crop early stage, the later stage is not taken off fertilizer, can save the recruitment of topdressing again.

3. anti-caking not: because the coating synergistic urea scribbles one deck glued membrane, its intergranular avidity is reduced, bridging power weakens, and prevented from caking helps preserving and using.

4. degeneration-resistant: as to make it have diseases and insect pests resistance owing to adding HA and trace elements zn, Cu etc., cold tolerance, anti-salt alkali ability.Because adding has K, B to make it have lodging tolerance.

5. its highly versatile: the N that removes in the urea is general main fertilizer kind, in the various chelating attitudes of adding, the crop that adapts to of trace element, the acid of nitrogen base and HA is comprehensive, also can be according to Different Crop and soil, and increase and decrease allotment at any time, thereby make its versatility extremely strong.

Table 2 farming examination effect table

Farm crop	Stimulation ratio	Quality	Input-output ratio
Paddy rice	9-11％	(not surveying)	1∶21
Wheat	11.2％	Protein improves 0.28% Methionin and improves 0.014%	1∶26.1
Cotton	14.6％	Velveteen is long to increase by 2.0%	1∶27
Corn	12.1％	Protein improves 6.3% amino acid and improves 0.19%	1∶24.3
Beet	12.3％	Sugar degree improves 2.0%	1∶13.7

Use main points

1. this product release to birth ratio is slower, and release peak period slow approximately about 5 days than common urea so use as if topdressing, should correspondingly be used in advance than common urea routine.

Since its guarantor's nitrogen in soil can force rate common urea strong, the absorption rate of nitrogen is higher, so when comparison is decided fertilizer and used to produce, still can reach same output than common urea Shaoshi 10-15% on amount of application; When if equivalent is used, then there is tangible volume increase to render a service.

3. it is applicable in the different soils and uses, and guarantor's nitrogen ability is all strong than common urea, but guarantor's chlorine ability of clay is better than sandy soil, and the latter should repeatedly execute on a small quantity to good.

4. collect the crop of nourishing body for vegetables, beet, melon and fruit etc., easily the bigger effect of increasing production of performance is received the seed crop to wheat, paddy rice, peanut etc., should suitably execute phosphorus, potash fertilizer for well according to the crop needs, can be more satisfied in conjunction with soil testing and fertilizer recommendation.

Table 3 is recommended with reference to amount of application

Farm crop	Economic optimum spraying amount		The optimum amount of application
Wheat	Economic optimum spraying amount			25Kg/ mu
Corn	26Kg/ mu is executed in the 400Kg/ per mu yield	18.2Kg/ mu is executed in the 500Kg/ per mu yield	25Kg/ mu
Cotton			25Kg/ mu
Beet			25Kg/ mu
Paddy rice			25Kg/ mu

Annotate: the optimum amount of application refers to the amount of application postscript in medium fertility soil in the table:

Monarch: be meant nitrogen contained in the urea.Minister: be meant the necessary middle micronutrient element of crop.Make: be meant the composite multifunction sustained release dosage of allocating into, compound many merits complexing agent, soil improvement agent, growth stimulant, sterilant, adverse-resistant agent etc.Assistant: be meant the coordination element P, the K that promote that N absorbs.

Complexing agent A in the compound complex agent is a urea, code name U ₁Complexing agent B is EDTA; Complexing agent C is HA, and code name is organic 1; Complexing agent D is PAM; Complexing agent E is an amino acid, and code name is organic 2; The composite multifunction sustained release dosage is PAM and edible Gelatinum oxhide; The inorganic nutrients composition is: M1 is that Fe, M2 are that Zn, M3 are that Mn, M4 are that Mg, M5 are that Mo, M6 are Cu, and M7 is that Co, M8 are K, and this patent technology also has P, S, B non-metallic element in addition.The organotrophy composition has: HAK, multiple amino acids, edible Gelatinum oxhide, PAM.

Has having of soil improvement agent effect: PAM, HAK, edible Gelatinum oxhide, amino acid; Have and separate P and separate having of K effect: HA, H ₃PO ₄, H ₃BO ₄, amino acid, what have growth stimulation has: HA; Have having of sterilant effect: HA, Cu, Zn etc.; What have degeneration-resistant effect has HA, amino acid, a B etc.; Have having of solid N effect: HA, Me, Co, Cu, Zn etc., be applicable to the device (being fit to use below 50,000 T/a) that small-scale production is used: major equipment: one of reactor A:1000L, one of reactor B:500L films with one on stirrer JDY-350C type.

In the accompanying drawing 2: 1, research purpose: be at the present high Fertilization Level of China, the serious problems in the low utilization rate of fertilizer agriculture production conduct a research for improving the fertilizer benefit.2, study route: along the rational application of fertilizer, fertilizing method, the route that changes the fertilizer moulding realizes improving utilization rate of fertilizer and urea effectiveness.3, the direction target of developing this product is: develop and a kind ofly have the universal composite nitrogen fertilizer of slowization, high efficiency, scientific, compoundization, quantification in order to development two-supremes one excellent agricultural.

Claims

1, coated synergistic urea is at a kind of special coating liquid of common urea surface-coated, through doing new fertile kind of a kind of composite nitrogen fertilizer that solid oxidation is made, it is characterized in that: be coated with and contain N, P, K, S, Mg, O in the rete ₂, Fe, Zn, necessary big or middle, micronutrient element of Mn, Mo, Cu, B crop and amino acid, humic acids, edible Gelatinum oxhide, the polyacrylamide organic matter is made special coating liquid through the substep complexing.

2, new fertile kind the according to claim 1 is characterized in that: used urea 5-50Kg in the described special coating liquid per ton, amino acid 3-30Kg, humic acids 3-30Kg, EDTA disodium salt 2-20Kg, the compound complex agent of being formed.

3, new fertile kind the according to claim 1 is characterized in that: adopted polyacrylamide 10-100Kg, the composite slow release agent that edible Gelatinum oxhide 3-30Kg is formed in the described special coating liquid per ton.

4, new fertile kind the according to claim 1, it is characterized in that: the actual contents consumption of employed nutritive element is in the described special coating liquid per ton: sal epsom 5-50Kg, manganous sulfate 5-50Kg, borax 3-30Kg, ammonium molybdate 5-50Kg, copper sulfate 10-100g, rose vitriol 100-500g, potassium primary phosphate 3-30Kg, tertiary sodium phosphate 1-10Kg, ferrous sulfate 10-100Kg, zinc sulfate 5-50Kg, 1), urea these industrial chemicals have many multifunctionalities that have:: not only for main nutrient composition but also be good complexing agent, also have the effect of solubilising; 2), polyacrylamide: be sustained release dosage be again soil improvement agent; 3), borax: be dispersion agent, solubility promoter in solution, in product be effective nutritive element be again good anti-caking agent; 4), humic acids: be a good soil improvement agent be again good complexing agent, still good organic fertilizer, 5), amino acid: have complexing action, infertile field effect, ion exchange, the effect of suction ammonia and improve the crop quality effect; 6), copper sulfate is that nutritive ingredient can play sterilant again in product.

5, new fertile kind the according to claim 1, it is characterized in that: described special coating liquid has adopted the substep complexing aborning, makes its technology more economical, reasonable.

6, new fertile kind the according to claim 1, it is characterized in that: it has changed the fertilizer moulding, makes its slowization, high efficiency, scientific, quantification, compoundization, is the new trend of chemical fertilizer industry development.

1), adopt the substep complexing to prepare coating liquid 7, the new fertile preparation method who plants according to claim 1 is characterized in that:: the first step, in reactor A, dissolve sustained release dosage; In second step, the nutritive element that adds in reactor A, the zinc sulfate ferrous except that sulfuric acid carries out twice complexing with humic acids and EDTA disodium salt, amino acid respectively; In the 3rd step, in reactor A, add ferrous sulfate, zinc sulfate and urea complexation and become urine iron, urea zinc, in importing still A, carry out final complexing and become special coating liquid; 2), the special coating liquid of 0.1-1% is sprayed on urea surface and gets the finished product coated synergistic urea through doing solid oxidation.