CN101570457A - Ecological nitrogen fertilizer and preparation method thereof - Google Patents
Ecological nitrogen fertilizer and preparation method thereof Download PDFInfo
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- CN101570457A CN101570457A CNA200810049643XA CN200810049643A CN101570457A CN 101570457 A CN101570457 A CN 101570457A CN A200810049643X A CNA200810049643X A CN A200810049643XA CN 200810049643 A CN200810049643 A CN 200810049643A CN 101570457 A CN101570457 A CN 101570457A
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Abstract
The invention relates to an ecological nitrogen fertilizer and a preparation method thereof, solving the problem of lower utilization rate of urea. In the invention, a multi-element integrating technology is adopted, chitin is used as a wrapping agent due to the film-forming property and excellent stickiness, organic matter containing humic acid is used as an urea adsorbent, medium trace elements are used as a balance agent of plant nutrient elements, and a root-promoting agent capable of promoting the root growth of plants is added to generate the multi-element multifunctional ecological nitrogen fertilizer by using the urea as a main raw material. The ecological nitrogen fertilizer is characterized in that the water-soluble chitin is used as the wrapping agent, and the medium trace fertilizer wrapped small granular urea and substances rich in the humic acid, such as weathered coal, grass carbon, and the like are mixed; and the raw materials has the following mixture ratio: 550 to 750 of urea, 200 to 400 of grass carbon (containing 30 percent of water), 80 to 200 of additive, 30 to 90 percent of medium trace fertilizer, 1 to 5 of chitin and 0.5 to 0.20 of root-promoting agent.
Description
Technical field:
The invention belongs to the nitrogen fertilizer production field, relate in particular to a kind of ecological nitrogen fertilizer and preparation method thereof.
Background technology:
Urea is domestic and international topmost nitrogen fertilizers, also is the maximum a kind of nitrogenous fertilizer of world today's turnout and usage quantity, accounts for more than 60% of nitrogenous fertilizer total amount.Urea is amide nitrogen fertilizer, and nitrogen content is up to 46%, and urea is non-acid group class nitrogenous fertilizer, and the not acidified soil that do not harden is applicable to many crops and soil.But after being manured into soil, under the effect of urase, resolving into ammonium nitrogen and very easily run off, this season utilization ratio 30% of urea, if application technique is improper, utilization ratio is lower, the also the easiest ecological environmental pollution that causes.Therefore prolong the urea efficiency phase, improving nitrogen utilization efficiency is the important topic of fertilizer scientific research.
In order to prolong the fertilizer efficiency of urea, improve the utilization ratio of nitrogenous fertilizer, fertilizer enterprise adopts following method both at home and abroad:
1, sulfur-coated urea is with the sulphur coated urea, and the advantage of this technology art is that used sulphur is Drug coating, is again middle amount nutritive element, but along with the raising of world's sulphur price, the cost of sulphur coated urea is constantly soaring.
2, the plastics coated urea can reach the purpose of slow controlled release, but the production cost height, the plastic film of dressing is difficult for decomposing contaminated soil, domestic few employing.
3, the fertile bag of solubility in citric acid urea uses solubility in citric acid fertilizer coated ureas such as fused(calcium magnesium)phosphate, effectively reduces production cost, but the coating bed thickness reduces much urea content.
4, be amide nitrogen fertilizer with urease inhibitors and nitrification inhibitor urea, its nitrogenous fertilizer can not be by plant absorbing, essential enzymolysis through soil enzyme, make it be decomposed into carboxylamine amine, form with ammonium nitrogen is utilized by plant absorbing, therefore, the activity decision urea-N transformation of soil enzyme is the quantity and the speed of ammonium nitrogen, because it is warmer that weather is on average cultivated by China, the conversion of ammonium nitrogen is very fast, crop has little time whole absorptions, and a part is converted into the loss of volatility ammonium nitrogen, and a part of leaching loses with current.Therefore the utilization ratio that improves blood urea nitrogen at first is the activity of control soil urease, to satisfy the needs of crop absorbed nitrogen, controls the nitrification of ammonium nitrogen subsequently.Adopt the synergy of urease inhibitor and nitrification inhibitor, the former suppresses the urase bacterium, and the latter suppresses nitrobacteria, forms the long-acting carbamide of mixed matching urea addn.
5, humic acids coated urea number of patent application (99117649) adopts Na2SiO3 to make tackiness agent, and parcel contains the organic matter of humic acids.Though this method has increased humic acids, play and reduce the effect that urea runs off, middle trace element can not be provided, limited to the raising of urea utilization ratio.
Summary of the invention:
The present invention adopts the multielement integrated technology in order to solve the lower problem of urea utilization ratio, utilizes chitin film-forming properties and good viscosity as coating agent.Utilization contains the sorbent material of humic acids organic matter as urea, makes the poiser of plant nutrient with middle trace element, adds the promoter that promotes the crop root growth simultaneously, and generating with urea is the multielement of main raw material, multi-functional ecological nitrogen fertilizer.The method that this product has adopted physics parcel and chemisorption to combine has prevented the loss of urea.Method with little fertilizer in adding is come balance plant nutrition, improved the utilization ratio of urea, promote the growth of root system with promoter, improve the function of crop absorption nutrition, adopt several different methods to make ecological nitrogen fertilizer have multiple function, these additives itself are plant nutrition, and are cheap, the process for processing cost is low, and net effect is better than simple coated slow-release urea.
The technical scheme that the present invention deals with problems is:
Ecological nitrogen fertilizer is to be coating agent with the N,O-CMC, mix weathered coal, the peat composed of rotten mosses etc. be rich in humic-acid-type substances and in little fertile parcel small particle urea, after batch mixing, parcel, throwing circle, oven dry, screening, be ecological nitrogen fertilizer.
1, the composition of raw materials ratio is: (unit: kg)
Urea 550-750, the peat composed of rotten mosses (moisture 30%) 200-400, additive 80-200, in little fertile 30-90, chitin 1-5, promoter 0.5-0.20.
2, technical process:
3, processing method
(1), the peat composed of rotten mosses, the activation treatment of weathered coal
In the peat composed of rotten mosses, weathered coal, add the activator of 10-15%, placed 3-5 days.
(2), trace element chelated reaction in
The inner complex of trace element during the inorganic salt of middle trace element and humic acids reaction made it to generate.
(3), batch mixing, granulation
In agitator, add urea and add microelement chelate in chitin solution and the humic acids, send the granulation of granulation dish behind the parcel small particle urea, throw the circle processing.
(4), oven dry, cooling
The ecological nitrogen fertilizer of balling-up is sent into dryer by rotary conveyor, adjust inlet temperature 100-115 degree, air outlet temperature 35-45 degree is dried, is cooled off.
(5), sieve, pack.
The material that comes out from dryer directly sieves without cooler, removes low amounts of dust, and its dust returns batch mixing granulation process, finished product packing.
Product and technology characteristics:
(1), chitosan solution is as the parcel Granulating Bonding Agent, and humic acids material and urea are closely wrapped up, prolonged the fertilizer efficiency of urea, and made the function of ecological nitrogen fertilizer increase sterilization and disinsection.
The activated weathered coal and the peat composed of rotten mosses are loose, are difficult to fine and close coated urea particle, if add too much excellent soil then effective constituent decline, and increase the difficulty of oven dry.This process using chitosan solution is as bonding coating agent, and consumption is few, and viscosity is big, and is effective, because the humic acid activity group to the adsorption of urea, makes urea have the slow characteristics of Ji mutually, can effectively improve the utilization ratio of nitrogenous fertilizer.Chitosan itself be plant growth hormones be again sterilizing insecticide, make ecological nitrogen fertilizer possess multiple function.
(2), utilize little fertilizer in the chelating adding of the complexing of urea and chitin, humic acids, the activity of the little fertilizer of Bao Tezhong, active balance plant nutrition.
In little fertilizer very easily with fertilizer and soil in phosphate radical and other material react and lose activity.This technology is trace element during carrier adds with urea, make urea become in the complexing agent of little fertilizer, chitin, humic acids are the sorbent material and the sequestrants of middle trace element, the activity of little fertilizer in effectively having guaranteed.
(3), adopt granulating method compound fertilizer pelletizing equipment, simplify granulation process, reduce the granulation cost, granulation process adopts, batch mixing, granulation are integrated entirely, oven dry, cooling integration make parcel granulation cost only be half of common compound fertilizer pelletizing cost.
Product performance index:
(1) product performance: form chitin film on the urea top layer, and utilize its viscosity will be rich in humic acids organism, in little fertilizer, synergistic agent etc. be wrapped in the urea skin.Finished transformation by crude substance instead of chemical substance change fertilizer primary characteristic.Have improvement and cultivate soil, increase soil organic matter content, promote plant establishment to tiller, promote leaf growth speed, improve characteristics such as crop quality and output, have diseases prevention, drought resisting, water conservation, nutrient preserving capability energy.Both can reduce the volatilization and the loss of nitrogen, can fully have been absorbed by crop again, existing slow release long-acting, having immediate effect property is helped slowly mutually again.After this product is manured into soil, promptly be that unit forms several nutrient pools with the particle, it can supply with nutrient at random according to the crop needs, use many confessions more, few with few confession, not only can make base manure but also can topdress, can also make various nutrients residual in the soil obtain activating, be continued to absorb by crop.Through testing the demonstration proof for many years repeatedly: this product nitrogen utilization efficiency is enhanced about more than once than urea up to 50-60%, reaches developed country's nitrogen utilization efficiency level, and fertilizer efficiency reaches 110 days.Using ecological nitrogen fertilizer and can not only save a large amount of energy for country, can also reduce soil pollution simultaneously, preserve the ecological environment, also is to produce the ideal of heath food with fertile.
(2) product quality indicator:
Table 2 product quality indicator %
| Sequence number | Project | I | II |
| 1 | Nitrogen content 〉= | 30 | 25 |
| 2 | Organic 〉= | 10 | 16 |
| 3 | Moderate-element 〉= | 0 | 1 |
| 4 | Trace element 〉= | 0.5 | 0.5 |
| 5 | Moisture 〉= | 5 | 10 |
The invention has the beneficial effects as follows:
Utilize the most cheap comprehensive measure, improve the utilization ratio of urea, reduce the loss of urea, increase soil fertility.
1, utilizes humic acids to make the utilization ratio that sustained release dosage improves urea, improve the soil.
How to improve the utilization ratio of urea, be the important topic that agricultural science and technology circle is paid close attention to always.Method one commonly used both at home and abroad is a coating, the 2nd, add urease inhibitors and nitrification inhibitor.It is main raw material that the present invention adopts the peat composed of rotten mosses, the weathered coal contain humic acids, after the activated processing as the coating agent of urea.During the independent as fertilizer sources of humic acids, fertilizer efficiency is lower, but during with the urea compounding application, humic acids and urea close contact.Help Absorption for Urea to the humic acids group, prevent the urea leaching loss, significantly strengthen fertilizer efficiency, improve the fertilizer supply and preservation ability of soil, reduce the loss of available nutrient, thereby improve fertilizer utilization ratio greatly, alleviated the detrimentally affect of nitrogenous fertilizer, still a kind of good soil improvement agent soil physical and chemical property.
2, trace element in the adding, balanced nutrients improves crop yield.
Urea to Ca, Mg, Zn, Fe, Cu, Mn, etc. in trace element fertilizer have complexing action, the active group centering trace element of chitin, humic acids is to having absorption, sequestering action.Urea be in little fertilizer best carrier and disperse Ji, can improve its stability with adding urea behind middle trace element and humic acids, the chitin chelating, micro-activity in the enhancing.Adopt no matter the ecological nitrogen fertilizer of this explained hereafter is independent use, still produce BB fertilizer, all can play balance plant nutrition, improve the effect of crop yield and quality with phosphorus, potassium compound.
3, make coating agent with chitin, not only wrap up effectively, and improve soil beneficial microorganism activity, increase sterilization, parasiticidal function.
Chitosan is a water-soluble high-molecular compound, has very high viscosity, in the production as the ecological fertile tackiness agent of humic acids particle.After applying chitin in the soil according to reports, the microbial population of secretion chitinase increases, and chitinase activity significantly improves, and fungal disease then is suppressed.Because chitosan has very strong germicidal action, add ecological nitrogen fertilizer and can effectively prevent and treat the disease that causes by true mattress.Nematode is given crop, and fruit and dish have brought serious harm, and chitosan can promote soil microorganisms to produce a kind of enzyme that kills nematode and worm's ovum.Because the chitosan sterilization, desinsection is accorded with one's environment, and can promote the benign cycle of the eubiosis.
4, simplify production technique, reduce production costs.
Humic acid urea is a kind of multi-functional high-efficiency nitrogen fertilizer that has, production cost is the key that can this product move towards market, production explores batch mixing, granulation unites two into one, oven dry, cooling unite two into one, make balling ratio once reach 95%, the returning charge rate is less than 5%, and the urea encapsulation ratio is near 100%, and the whole production cost only is that common granulating method is produced half of compound fertilizer.
Embodiment
Get urea 550kg, the peat composed of rotten mosses (moisture 30%) 400kg, additive 150kg, in little fertile 50kg, chitin 3kg, promoter 0.1kg.
(1), the peat composed of rotten mosses, the activation treatment of weathered coal
The activator of adding 15% was placed 3 days in the peat composed of rotten mosses, weathered coal.
(2), trace element chelated reaction in
The inner complex of trace element during the inorganic salt of middle trace element and humic acids reaction made it to generate.
(3), batch mixing, granulation
In agitator, add urea and add microelement chelate in chitin solution and the humic acids, send the granulation of granulation dish, throwing garden to handle behind the parcel small particle urea.
(4), oven dry, cooling
The ecological nitrogen fertilizer of balling-up is sent into dryer by rotary conveyor, adjust inlet temperature 110 degree, air outlet temperature 45 degree are dried, are cooled off.
(5), sieve, pack.
The material that comes out from dryer directly sieves without cooler, removes low amounts of dust, and its dust returns batch mixing granulation process, finished product packing.
Claims (3)
1, a kind of ecological nitrogen fertilizer and preparation method thereof is characterized in that: be coating agent with the N,O-CMC, mix weathered coal, the peat composed of rotten mosses etc. be rich in humic-acid-type substances and in little fertile parcel small particle urea.
2, according to claim 1, a kind of ecological nitrogen fertilizer and preparation method thereof, its composition of raw materials ratio is: urea 550-750, the peat composed of rotten mosses (moisture 30%) 200-400, additive 80-200, in little fertile 30-90, chitin 1-5, promoter 0.5-0.20.
3, according to claim 1, a kind of ecological nitrogen fertilizer and preparation method thereof, its technical process is:
(1), the peat composed of rotten mosses, the activation treatment of weathered coal
In the peat composed of rotten mosses, weathered coal, add the activator of 10-15%, placed 3-5 days.
(2), trace element chelated reaction in
The inner complex of trace element during the inorganic salt of middle trace element and humic acids reaction made it to generate.
(3), batch mixing, granulation
In agitator, add urea and add microelement chelate in chitin solution and the humic acids, send the granulation of granulation dish behind the parcel small particle urea, throw the circle processing.
(4), oven dry, cooling
The ecological nitrogen fertilizer of balling-up is sent into dryer by rotary conveyor, adjust inlet temperature 100-115 degree, air outlet temperature 35-45 degree is dried, is cooled off.
(5), sieve, pack
The material that comes out from dryer directly sieves without cooler, removes low amounts of dust, and its dust returns batch mixing granulation process, finished product packing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200810049643XA CN101570457A (en) | 2008-04-28 | 2008-04-28 | Ecological nitrogen fertilizer and preparation method thereof |
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| CNA200810049643XA CN101570457A (en) | 2008-04-28 | 2008-04-28 | Ecological nitrogen fertilizer and preparation method thereof |
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| CN101570457A true CN101570457A (en) | 2009-11-04 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102153425A (en) * | 2011-05-17 | 2011-08-17 | 邢志胜 | Slow-releasing organic microbial urea and preparation method thereof |
| CN102276347A (en) * | 2011-05-24 | 2011-12-14 | 牛慧玲 | Turf and wormcast sustained-release organic fertilizer and preparation method thereof |
| CN102391876A (en) * | 2011-09-29 | 2012-03-28 | 山东靠山生物科技有限公司 | Composite biological soil modifier and application thereof |
| CN102924168A (en) * | 2012-10-30 | 2013-02-13 | 安徽省文胜肥业有限责任公司 | Humic acid silicon-clad nitrogen fertilizer and preparation method thereof |
| CN103011974A (en) * | 2012-12-26 | 2013-04-03 | 福建超大集团有限公司 | Manufacture method of chitin biological fertilizer with slow-release function |
| CN103073350A (en) * | 2013-01-10 | 2013-05-01 | 山西昌鑫生物农业科技有限公司 | Slow-release humic acid and urea compound fertilizer and preparation method thereof |
| CN103936520A (en) * | 2014-04-28 | 2014-07-23 | 白银市桔瑞生物科技有限公司 | Ecological slow release fertilizer and preparation method thereof |
| CN104262042A (en) * | 2014-10-13 | 2015-01-07 | 尤素梅 | Compound mixed organic fertilizer for controlling meloidogyne of crops as well as preparation method and application of organic fertilizer |
| CN104671991A (en) * | 2015-01-29 | 2015-06-03 | 成都新柯力化工科技有限公司 | Special slow-released water-soluble fertilizer for american ginseng and preparation method thereof |
| CN107417471A (en) * | 2017-09-06 | 2017-12-01 | 汪建利 | Fertilizer saves half, the soil fertility activator and preparation method thereof of the crop not underproduction |
-
2008
- 2008-04-28 CN CNA200810049643XA patent/CN101570457A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102153425A (en) * | 2011-05-17 | 2011-08-17 | 邢志胜 | Slow-releasing organic microbial urea and preparation method thereof |
| CN102276347A (en) * | 2011-05-24 | 2011-12-14 | 牛慧玲 | Turf and wormcast sustained-release organic fertilizer and preparation method thereof |
| CN102391876A (en) * | 2011-09-29 | 2012-03-28 | 山东靠山生物科技有限公司 | Composite biological soil modifier and application thereof |
| CN102391876B (en) * | 2011-09-29 | 2015-03-04 | 山东靠山生物科技有限公司 | Composite biological soil modifier and application thereof |
| CN102924168A (en) * | 2012-10-30 | 2013-02-13 | 安徽省文胜肥业有限责任公司 | Humic acid silicon-clad nitrogen fertilizer and preparation method thereof |
| CN103011974A (en) * | 2012-12-26 | 2013-04-03 | 福建超大集团有限公司 | Manufacture method of chitin biological fertilizer with slow-release function |
| CN103073350A (en) * | 2013-01-10 | 2013-05-01 | 山西昌鑫生物农业科技有限公司 | Slow-release humic acid and urea compound fertilizer and preparation method thereof |
| CN103936520A (en) * | 2014-04-28 | 2014-07-23 | 白银市桔瑞生物科技有限公司 | Ecological slow release fertilizer and preparation method thereof |
| CN104262042A (en) * | 2014-10-13 | 2015-01-07 | 尤素梅 | Compound mixed organic fertilizer for controlling meloidogyne of crops as well as preparation method and application of organic fertilizer |
| CN104671991A (en) * | 2015-01-29 | 2015-06-03 | 成都新柯力化工科技有限公司 | Special slow-released water-soluble fertilizer for american ginseng and preparation method thereof |
| CN107417471A (en) * | 2017-09-06 | 2017-12-01 | 汪建利 | Fertilizer saves half, the soil fertility activator and preparation method thereof of the crop not underproduction |
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Application publication date: 20091104 |