CN1321948C - Shell body nitrogen fixing slow release composite fertilizer - Google Patents
Shell body nitrogen fixing slow release composite fertilizer Download PDFInfo
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- CN1321948C CN1321948C CNB2005101223120A CN200510122312A CN1321948C CN 1321948 C CN1321948 C CN 1321948C CN B2005101223120 A CNB2005101223120 A CN B2005101223120A CN 200510122312 A CN200510122312 A CN 200510122312A CN 1321948 C CN1321948 C CN 1321948C
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- slow release
- shell body
- composite fertilizer
- nitrogen fixing
- body nitrogen
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Abstract
The present invention relates to shell body nitrogen fixing slow release composite fertilizer which belongs to the technical field of chemical fertilizer. The shell body nitrogen fixing slow release composite fertilizer comprises normal superphosphate, monoammonium phosphate and potassium chloride and is characterized in that shell body nitrogen fixing slow release composite fertilizer comprises 5 to 10% of organic diatomite, 6 to 10% of calcium sulfate, 6 to 10% of the general calcium perphosphate, 23 to 35% of the monoammonium phosphate, 10 to 20% of potassium chloride and 23 to 33% of urea. The present invention has the advantages of no crushing of the fertilizer by keeping for a long time, no disintegration, slow release of nutrients, low cost, no pollution, soil quality loosening, water conservation, soil moisture preservation, soil improvement, etc.
Description
Technical field
The invention belongs to the chemical fertilizer technical field, particularly relate to a kind of shell body nitrogen fixing slow release composite fertilizer.
Background technology
At present, use chemical fertilizer in a large number when bringing volume increase for a long time, bring very big negative impact also for soil, farm crop and environment to farm crop.Studies show that, common fertilizer use the initial stage nutrient a large amount of, concentrate, snap-out release, can lose because of leaching, decomposition, volatilization, even can burn seedling because of poisoning and make crop failure.Wherein loss is maximum, and what utilization ratio was minimum is nitrogenous fertilizer.The utilization ratio of effective rate of utilization less than 40%, the especially nitrogenous fertilizer of common fertilizer only is 35%.Limited chemical fertilizer resource has not only been wasted in the loss of fertilizer, also soil, atmosphere and water body environment has been caused pollution simultaneously, and makes the yield increase effect of chemical fertilizer on agricultural descend year by year.Delay the dissolving diffusion of fertilizer at present, reach the slowly-releasing purpose, comparatively general method is the inertia macromolecule membrane that fertiliser granulates surface bag is coated with one deck indissoluble.But adopt polymer inert membrane cost height, up to 900～1500 dollars, therefore, can not accept at all by field crop in the price of world market for the slow release fertilizer of its production.
Summary of the invention
The present invention provides a kind of shell body nitrogen fixing slow release composite fertilizer for solving the technical problem that exists in the known technology.
The present invention seeks to improve chemical fertilizer utilization ratio, save manure resources, reduce production costs, reduce the pollution of fertilizer loss environment.
The present invention is on the empirical basis of long-term production compound manure, find that some crude substance can form that perforated shell absorbs and fixing fertilizer nutrient, after being manured into soil, under field conditions (factors), nutrient demand speed is discharged nutrient lentamente according to nutrient density in the soil and crop.
Technology and equipment that the production method of shell body nitrogen fixing slow release composite fertilizer and conventional urea smelting and spraying comminution granulation are produced compound manure improve to some extent, key is to add the fixedly natural materials of nutrient of absorption in batching, forms the absorption fixedly skeleton and the porous parcel housing of nutrient.Processing condition mainly are to have improved prilling temperature and pressure.
The present invention takes following technical scheme:
Shell body nitrogen fixing slow release composite fertilizer comprises normal superphosphate, monoammonium phosphate, Repone K, is characterized in that the weight composition of shell body nitrogen fixing slow release composite fertilizer comprises:
Organic diatomite 5-10%
Calcium sulfate 6-10%
Normal superphosphate 6-10%
Monoammonium phosphate 23-35%
Repone K 10-20%
Urea 23-33%.
Shell body nitrogen fixing slow release composite fertilizer has adopted the very high organic diatomite of adsorptivity as the nutrient sorbent material in batching, simultaneously with inorganic calcium salt as skeleton and coating agent, be equipped with solid, powdery materials such as monoammonium phosphate, Repone K, normal superphosphate, adopt the urea smelting and spraying prilling process, urea liquid is adsorbed in organic diatomite, utilize the skeleton of calcium salt then and form to have poroid housing, it is fixing to rest the branch parcel.
The present invention can also adopt following technical measures:
Described shell body nitrogen fixing slow release composite fertilizer is characterized in that the weight composition of shell body nitrogen fixing slow release composite fertilizer comprises:
Organic diatomite 6-8%
Calcium sulfate 7-9%
Normal superphosphate 7-9%
Monoammonium phosphate 25-35%
Repone K 10-20%
Urea 23-33%.
Described shell body nitrogen fixing slow release composite fertilizer is characterized in: shell body nitrogen fixing slow release composite fertilizer contains wilkinite 1-5%.
Shell body nitrogen fixing slow release composite fertilizer production technique of the present invention:
When shell body nitrogen fixing slow release composite fertilizer adopted above-mentioned prescription, comparing with present urea spray granulation in production technique had following change on processing condition:
(1) spray pressure is higher, atomizing thinner.
Urea liquid spray pressure must be more than 0.4Mpa, and nozzle is changed into by independent spray urea liquid and adds hot compressed air and high-pressure water vapor atomizes, so urea droplets is thinner, and pressure is higher, and composite fertilizer's granulating is harder, parcel more even.
(2) prilling temperature is higher
Change the steam that adds high pressure into by adding the water granulation in granulation process, therefore pressure improved prilling temperature and pressure more than 0.8Mpa.
Change through above processing condition, prilling temperature and pressure when having improved production, nitrogen nutrient are wrapped up by insoluble calcium sulfate again layer by layer by organic diatomite adsorption, and particle is hard, are difficult for fragmentation in soil and in the water, reach the slowly-releasing purpose.
Advantage and positively effect that the present invention has are:
Add organic diatomite as sorbent material in batching, calcium sulfate is skeleton structure and coating agent, makes fertiliser granulates can keep not broken for a long time in being manured into soil and in water, and not disintegration reaches the purpose that nutrient slowly discharges.Organic diatomite has the characteristics of porous, loose high adsorption capacity, retains in the effect that can play water-retaining effect in the soil after fertilizer nutrient has discharged, and sulphur that contains in the calcium sulfate and calcium are the necessary middle trace elements of plant growth.Its advantage is:
(1) cost is low.The single nitrogen content price of using the slow release fertilizer fertilizer per ton of chemical packs film production is 2.8～3 times of common fertilizer, and shell body nitrogen fixing slow release fertilizer is 1.2 times of common fertilizer.
(2) had good sustained release effect.Utilize fixedly nutrient of natural porous material absorption, have adsorption efficiency height, parcel ability by force, can form multilayer mesh-shape housing, can adsorb fixedly nutrient during granulation in granule interior.The release of fertilising back nutrient is to be power with the mesh structural porous capillary action of housing, nutrient concentration gradient, and the high more release rate of temperature in the soil and moisture content is fast more, with plant-growth nutrient demand is matched.
Slow release effect: fertiliser granulates soaks in water can retain not disintegration more than 45 days, can keep not broken more than 150 days under the natural condition in soil.Nutrient being released to 24 hours and being no more than 15%, 28 day in water is no more than 75%, discharges 75% at least in whole release period.Fertilizer nutrient utilization ratio 〉=50%.
(3) pollution-free.Shell body nitrogen fixing slow release fertilizer adopts natural porous mineral matter, can not pollute edatope, and the elements such as calcium magnesium silicon that in two kinds of natural mineral matters that add, contain be plant growth necessary in trace element, natural porous mass can play loose soil property, water-retaining effect, improve the soil in soil effect.
Embodiment
In order further to understand summary of the invention of the present invention, characteristics and effect, exemplify following examples now, be described in detail as follows:
Embodiment 1
Prepare the shell body nitrogen fixing slow release composite fertilizer of nitrogenous, phosphorus, potassium, its batching is:
Solid material: organic diatomite 7%
Calcium sulfate 8%
Normal superphosphate 8%
Monoammonium phosphate 29%
Repone K 16.5%
Wilkinite 3%
Liquid area: 28.5%
Embodiment 2
The production technique of the shell body nitrogen fixing slow release composite fertilizer of embodiment 1:
When shell body nitrogen fixing slow release composite fertilizer adopted above-mentioned prescription, comparing with present urea spray granulation in production technique had following change on processing condition:
(1) spray pressure is higher, atomizing thinner
Urea liquid spray pressure is more than 0.4Mpa, and nozzle is changed into by independent spray urea liquid and adds hot compressed air and high-pressure water vapor atomizes, so urea droplets is thinner, and pressure is higher, and composite fertilizer's granulating is harder, parcel more even.
(2) prilling temperature is higher
Change the steam that adds high pressure into by adding the water granulation in granulation process, therefore pressure improved prilling temperature and pressure more than 0.8Mpa.
Change through above processing condition, prilling temperature and pressure when having improved production, nitrogen nutrient are wrapped up by insoluble calcium sulfate again layer by layer by organic diatomite adsorption, and particle is hard, are difficult for fragmentation in soil and in the water, reach the slowly-releasing purpose.
Claims (3)
1. shell body nitrogen fixing slow release composite fertilizer comprises normal superphosphate, monoammonium phosphate, Repone K, it is characterized in that the weight composition of shell body nitrogen fixing slow release composite fertilizer comprises:
Organic diatomite 5-10%
Calcium sulfate 6-10%
Normal superphosphate 6-10%
Monoammonium phosphate 23-35%
Repone K 10-20%
Urea 23-33%.
2. shell body nitrogen fixing slow release composite fertilizer according to claim 1 is characterized in that: the weight of shell body nitrogen fixing slow release composite fertilizer is formed and is comprised:
Organic diatomite 6-8%
Calcium sulfate 7-9%
Normal superphosphate 7-9%
Monoammonium phosphate 25-35%
Repone K 10-20%
Urea 23-33%.
3. shell body nitrogen fixing slow release composite fertilizer according to claim 1 is characterized in that: shell body nitrogen fixing slow release composite fertilizer contains wilkinite 1-5%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101223120A CN1321948C (en) | 2005-12-13 | 2005-12-13 | Shell body nitrogen fixing slow release composite fertilizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101223120A CN1321948C (en) | 2005-12-13 | 2005-12-13 | Shell body nitrogen fixing slow release composite fertilizer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1785936A CN1785936A (en) | 2006-06-14 |
| CN1321948C true CN1321948C (en) | 2007-06-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101223120A Expired - Fee Related CN1321948C (en) | 2005-12-13 | 2005-12-13 | Shell body nitrogen fixing slow release composite fertilizer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101279866B (en) * | 2007-12-05 | 2011-01-05 | 朱庆然 | Preparation for sulfur coated intelligent film of large grained urea or particulate composite fertilizer |
| CN105837309A (en) * | 2016-03-18 | 2016-08-10 | 河北百斗嘉肥料有限公司 | Slow-release compound fertilizer and preparation method thereof |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100584923C (en) * | 2007-04-30 | 2010-01-27 | 西北农林科技大学 | Soil water-holding capacity-increasing agent prepared from active carbon and production method thereof |
| CN101983957B (en) * | 2010-11-26 | 2013-03-13 | 天津芦阳化肥股份有限公司 | Method for producing nitrogen-fixing potassium slow-release compound fertilizer with mesh inner membrane by using ammonia-acid method |
| CN102093113B (en) * | 2011-01-19 | 2013-11-20 | 天津芦阳化肥股份有限公司 | Production method of readily available and controlled release composite fertilizer containing three nitrogen elements |
| CN109574747A (en) * | 2018-12-14 | 2019-04-05 | 河北百禾丰化肥有限公司 | A kind of interior absorbent-type is quick-acting-slow-release compound fertilizer and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1089932A (en) * | 1993-01-19 | 1994-07-27 | 上海青浦化工厂 | Granulated ammonium bicarbonate complex mixed fertilizer production method |
| CN1176881C (en) * | 2002-09-12 | 2004-11-24 | 中国科学院广州地球化学研究所 | Novel composite mineral fertilizer and its production process |
-
2005
- 2005-12-13 CN CNB2005101223120A patent/CN1321948C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1089932A (en) * | 1993-01-19 | 1994-07-27 | 上海青浦化工厂 | Granulated ammonium bicarbonate complex mixed fertilizer production method |
| CN1176881C (en) * | 2002-09-12 | 2004-11-24 | 中国科学院广州地球化学研究所 | Novel composite mineral fertilizer and its production process |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101279866B (en) * | 2007-12-05 | 2011-01-05 | 朱庆然 | Preparation for sulfur coated intelligent film of large grained urea or particulate composite fertilizer |
| CN105837309A (en) * | 2016-03-18 | 2016-08-10 | 河北百斗嘉肥料有限公司 | Slow-release compound fertilizer and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1785936A (en) | 2006-06-14 |
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