CN103524272B - A kind of high tower long-acting compound fertilizer and preparation method thereof - Google Patents
A kind of high tower long-acting compound fertilizer and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a kind of high tower long-acting compound fertilizer and preparation method thereof, described high tower long-acting compound fertilizer contains the N-serve that weight percent is 0.2-0.4%, N-serve has suppression ammonium nitrogen to the conversion of nitric nitrogen, can extend fertilizer efficiency more than one month; High tower long-acting compound fertilizer adopts the preparation of high-tower melting granulation technology, the N-serve of formula ratio is added after fertilizer granulating, coating under temperature is 80 ~ 90 DEG C of conditions, smooth penetrating, the granule surface of obtained fertiliser granulates has that aperture, nutrient are even, intensity is high, soluble, do not lump.
Description
Technical field
The invention belongs to fertilizer field, particularly a kind of high tower long-acting compound fertilizer, also relates to the preparation method of this compound manure.
Background technology
Nitro-compound fertilizer is the chemical fertilizer new variety that developing rapidly of China in recent years, and it is a kind of high-concentration compound fertilizer containing ammonium nitrogen, nitric nitrogen.Modified nitro-compound fertilizer product safety is reliable, easy to use, good environmental protection, nutrient content are high, both the fundamental characteristics of original ammonium nitrate had been remained, simultaneously containing the nutritive element needed for plant growth such as N P and K, nutrient is balanced, active constituent content is high, and compared with conventional composite fertilizer, fertilizer efficiency is fast, specific absorption is high, be a kind of obvious effect of increasing production, there is the fertilizer of good economic benefits and social benefit.But things has dual character, both advantageous and disadvantageous, nitro-compound fertilizer material is also like this, and one is soluble in water, and solubleness is large, and water absorbability is strong, can turn to liquid after moisture absorption; Two are nitrate radicals is negatively charged ion, to be difficult to adsorb by electronegative soil colloid, the movability in soil profile is comparatively large, therefore easily causes nitrate fertilizer to lower soil leaching loss when frequent rainfall or irrigation, is unfavorable for playing its fertilizer efficiency; Three is under poor aeration or strong also condition, nitrate radical (NO
3 -) can be formed through denitrification, N
2o and N
2gas, causes the loss of nitrogen.Therefore its feature is exactly that fertilizer efficiency is come soon, but shortcoming to be reserve strength poor, loss is many.
The drawbacks such as, easy loss short for nitro-compound fertilizer fertilizer efficiency period, be badly in need of a kind of minimizing fertilizer loss, improve crop utilization rate, the situation of the frequent rainfall in southern area or irrigation that reduces to greatest extent by the environmental pollution caused of applying fertilizer, and fully meets the long-acting compound fertilizer of fructovegetative nutrient demand.
Summary of the invention
In view of this, an object of the present invention is to provide a kind of high tower long-acting compound fertilizer, for the fructovegetative law of nutritive absorption of soils in south china growth, reduces fertilizer loss, increases operation rate, improve the output of vegetables and fruit; Two of object of the present invention is the preparation method providing a kind of high tower long-acting compound fertilizer, and its preparation method is simple, is convenient to suitability for industrialized production, reduces N-serve loss.
For achieving the above object, following technical scheme is provided:
A kind of high tower long-acting compound fertilizer, containing weight ratio in described compound manure is the N-serve of 0.2%-0.4%.
Preferably, containing weight ratio in described compound manure is the N-serve of 0.3%.
Preferably, nitrogen, Vanadium Pentoxide in FLAKES and the potassium oxide that weight ratio is 14-16:6-8:20-21 is contained in described compound manure.
Preferably, the weight ratio of described nitrogen, Vanadium Pentoxide in FLAKES and potassium oxide is 15:7:21.
Preferably, described nitrogen is that the nitric nitrogen of 1:1 and ammonium nitrogen form by mol ratio.
Preferably, the weight percent of described nitric nitrogen is greater than 7%.
Two of object of the present invention is the preparation method providing high tower long-acting compound fertilizer, provides following technical scheme:
The preparation method of described high tower long-acting compound fertilizer, comprises the steps: that, by nitre phosphorus ammonium, monoammonium phosphate and potassium sulfate carry out automatic blending, particle is less than to solid slurrying under temperature is 140 ~ 170 DEG C of conditions of 0.5mm; Then through tempering tank mixing, then spray in prilling tower through shower nozzle, cooling curing becomes particle diameter to be 2.2 ~ 4.5mm particle in atmosphere, and particle, through conveyor, cooler, vibratory screening apparatus, makes the particle of same particle diameter more than 95%; Then by granulated fertilizer through spouted bed coating machine by the N-serve of formula ratio and coating agent coating under temperature is 80 ~ 90 DEG C of conditions, then the surface of talcum powder puff at particle, make compound fertilizer granule surface form one deck anti-caking film, obtain high tower long-acting compound fertilizer.
Beneficial effect of the present invention is: the invention discloses a kind of high tower long-acting compound fertilizer, and this compound manure stops NH by adding appropriate N-serve
4 +-N is to NO
3 -the conversion process of-N, the nitrogenous fertilizer longer time is with NH
4 +-N form is kept in soil, absorbs for crop, which not only improves fertilizer efficiency, also reduces NO
3 -the unknown losses that-N leaching and denitrification cause, there is quick-acting and long-acting feature, the southern condition of the frequent rainfall of particularly suitable or irrigation, fertilizer efficiency can extend 30-60 days, utilization rate of fertilizer improves 10-15%, and with the addition of nitric nitrogen and ammonium nitrogen in fertilizer, the mol ratio of nitric nitrogen and ammonium nitrogen is 1:1, crop can be made to obtain higher growth velocity and output; In production technique, the preparation of compound manure adopts high-tower melting granulation technology, the coating (instead of adding in the slip of 140 ~ 170 DEG C) under the temperature condition of 80 ~ 90 DEG C by N-serve and coating agent, both even interpolation had been accomplished, turn avoid the N-serve distillation loss that high temperature causes, smooth penetrating, the granule surface of obtained product particle has that aperture, nutrient are even, intensity is high, soluble, does not lump.
Embodiment
Be described in detail below in conjunction with preferred embodiment.The experimental technique of unreceipted actual conditions in embodiment, the usually conveniently conditioned disjunction condition of advising according to manufacturer.
In the present invention indication common nitro-compound fertilizer material or be not that other components are identical with corresponding embodiment not containing the composite fertilizer of N-serve containing the compound manure of N-serve.
Embodiment 1
High tower long-acting compound fertilizer, its formula is: 1000 kilograms of high tower long-acting compound fertilizers by nitre phosphorus ammonium 455 kilograms, monoammonium phosphate 33 kilograms, potassium sulfate 373 kilograms, N-serve 0.2 kilogram, coating agent 2 kilograms, talcum powder 5 kilograms and ground silica 131.8 kilograms composition.
The preparation method of high tower long-acting compound fertilizer, comprise the steps: nitre phosphorus ammonium, monoammonium phosphate, potassium sulfate and ground silica carry out automatic blending, particle are less than to solid slurrying under temperature is 170 DEG C of conditions of 0.5mm; Then through tempering tank mixing, then spray in prilling tower through shower nozzle, cooling curing becomes particle diameter to be 3.5mm particle in atmosphere, and particle, through conveyor, cooler, vibratory screening apparatus, makes the particle of same particle diameter more than 95%; Then by granulated fertilizer through spouted bed coating machine by the N-serve of formula ratio and coating agent coating under temperature is 80 DEG C of conditions, then the surface of talcum powder puff at particle, make compound fertilizer granule surface form one deck anti-caking film, obtain high tower long-acting compound fertilizer.
In the high tower long-acting compound fertilizer that the present embodiment obtains, the weight ratio of nitrogen, Vanadium Pentoxide in FLAKES and potassium oxide is 14:6:20, wherein nitrogen is made up of nitric nitrogen and ammonium nitrogen, the weight ratio of nitric nitrogen is 7%, and the weight ratio of ammonium nitrogen is 7%, and the mol ratio of its nitric nitrogen and ammonium nitrogen is 1:1.
The high tower long-acting compound fertilizer obtained by the present embodiment is tested in the cucumber demonstration area of Guangzhou Guangdong.Peasant habit fertilising and high tower long-acting compound fertilizer two process (N-P-K content is identical) are set, do not apply fertilizer to the subsoil, start to topdress in conjunction with drip irrigation from cucumber field planting, disposable fertilizer is chased after every 7 days, chase after 10 times altogether, control experiment chases after not containing the compound manure 5Kg/ mu of N-serve at every turn, and high tower long-acting compound fertilizer is executed in the process of high tower long-acting compound fertilizer, and topdress 3.5Kg/ mu at every turn.Its experimental result shows, high tower controlled availability fertilizer is on the basis of joint fertile 30% compared with peasant household habits fertilization, and can increase cucumber 597.69 kilograms by mu, amplification is 10.2%.
Embodiment 2
The high tower long-acting compound fertilizer that Example 1 obtains is tested at the oranges and tangerines in Guangdong.Peasant habit fertilising and high tower long-acting compound fertilizer two process (N-P-K content is identical) are set, repeat for 3 times, apply fertilizer 3 times, rudiment fertilizer, fruit-promoting fertilizer, fruit picking fertilizer, peasant habit is used not containing the compound manure of N-serve, fertilizer amount is respectively 2Kg/, 3Kg/, 3Kg/, high tower long-acting compound fertilizer is executed in the long-acting compound (mixed) fertilizer process of high tower, consumption is respectively 1.6Kg/, 2.4Kg/, 2.4Kg/, fertilizing method digs the ditch of dark 20 centimetres, wide 20 centimetres under tree crown drip, evenly fertilizer is executed down, then blinding.Its experimental result shows, compared with applying fertilizer with peasant habit, high tower controlled availability fertilizer can improve Fruit-setting rate 3%-8% on the basis of synergy 20%, and single fruit weight improves 2%-6%, and amount of increase in production is 8%-12%.
Embodiment 3
High tower long-acting compound fertilizer, its formula is: 1000 kilograms of high tower long-acting compound fertilizers by nitre phosphorus ammonium 482 kilograms, monoammonium phosphate 50 kilograms, potassium sulfate 392 kilograms, N-serve 0.3 kilogram, coating agent 2 kilograms, talcum powder 5 kilograms and ground silica 68.7 kilograms composition.
The preparation method of high tower long-acting compound fertilizer, comprises the steps: that monoammonium phosphate, potassium sulfate and ground silica carry out automatic blending by nitre phosphorus ammonium, particle is less than to solid slurrying under temperature is 170 DEG C of conditions of 0.5mm; Then through tempering tank mixing, then spray in prilling tower through shower nozzle, cooling curing becomes particle diameter to be 4.5mm particle in atmosphere, and particle, through conveyor, cooler, vibratory screening apparatus, makes the particle of same particle diameter more than 95%; Then by granulated fertilizer through spouted bed coating machine by the N-serve of formula ratio and coating agent coating under temperature is 90 DEG C of conditions, then the surface of talcum powder puff at particle, make compound fertilizer granule surface form one deck anti-caking film, obtain high tower long-acting compound fertilizer.
In the high tower long-acting compound fertilizer that the present embodiment obtains, the weight ratio of nitrogen, Vanadium Pentoxide in FLAKES and potassium oxide is 15:7:21, wherein nitrogen is made up of nitric nitrogen and ammonium nitrogen, the weight ratio of nitric nitrogen is 7.5%, and the weight ratio of ammonium nitrogen is 7.5%, and the mol ratio of its nitric nitrogen and ammonium nitrogen is 1:1.
The high tower long-acting compound fertilizer that the present embodiment is obtained is tested in Bose City tomato planting district, Guangxi Zhuang Autonomous Region, peasant habit fertilising and high tower long-acting compound fertilizer two process (N-P-K content is identical) are set, repeat for 3 times, peasant habit fertilizer treatment base manure is executed not containing the compound manure of N-serve, 20Kg/ mu, topdress 30Kg/ mu; High tower long-acting compound fertilizer process base manure executes high tower long-acting compound fertilizer, 14Kg/ mu, and topdress 21Kg/ mu.Result shows, compared with contrast fertilising, when minimizing 30% rate of fertilizer application, high tower long-acting compound fertilizer can make tomato individual plant fruit number increase, amplification reaches 12.32% ~ 16.86%, and single fruit weight increases by 2.5 ~ 7.0 grams, amplification 2.86% ~ 8.01%, output increases by 1414.4 ~ 2113.6kg/ mu, and stimulation ratio is 13.05% ~ 20.85%.
Embodiment 4
The high tower long-acting compound fertilizer that Example 3 obtains is tested at Guangzhou Guangdong's balsam pear.Peasant habit fertilising and high tower long-acting compound fertilizer two process (N-P-K content is identical) are set, repeat, topdressed once every 15 days after balsam pear customizes one month, altogether topdress 8 times for 3 times.Peasant habit fertilizer treatment base manure is executed not containing the compound manure of N-serve, 50Kg/ mu, each fertilising 20Kg/ mu; High tower long-acting compound fertilizer process base manure executes the long-acting compound (mixed) fertilizer of high tower, 35Kg/ mu, each fertilising 14Kg/ mu.Its experimental result shows, compared with applying fertilizer with peasant habit, high tower controlled availability fertilizer is every mu of volume increase 629.7kg on the basis of synergy 30%, and amount of increase in production is 9%.
Embodiment 5
High tower long-acting compound fertilizer, its formula is: 1000 kilograms of high tower long-acting compound fertilizers by nitre phosphorus ammonium 509 kilograms, monoammonium phosphate 66 kilograms, potassium sulfate 392 kilograms, N-serve 0.1 kilogram, coating agent 2 kilograms, talcum powder 5 kilograms and ground silica 25.9 kilograms composition.
Embodiment 6
High tower long-acting compound fertilizer, its formula is: 1000 kilograms of high tower long-acting compound fertilizers by nitre phosphorus ammonium 509 kilograms, monoammonium phosphate 66 kilograms, potassium sulfate 392 kilograms, N-serve 0.2 kilogram, coating agent 2 kilograms, talcum powder 5 kilograms and ground silica 25.8 kilograms composition.
Embodiment 7
High tower long-acting compound fertilizer, its formula is: 1000 kilograms of high tower long-acting compound fertilizers by nitre phosphorus ammonium 509 kilograms, monoammonium phosphate 66 kilograms, potassium sulfate 392 kilograms, N-serve 0.3 kilogram, coating agent 2 kilograms, talcum powder 5 kilograms and ground silica 25.7 kilograms composition.
Embodiment 8
High tower long-acting compound fertilizer, its formula is: 1000 kilograms of high tower long-acting compound fertilizers by nitre phosphorus ammonium 509 kilograms, monoammonium phosphate 66 kilograms, potassium sulfate 392 kilograms, N-serve 0.4 kilogram, coating agent 2 kilograms, talcum powder 5 kilograms and ground silica 25.6 kilograms composition.
Embodiment 9
High tower long-acting compound fertilizer, its formula is: 1000 kilograms of high tower long-acting compound fertilizers by nitre phosphorus ammonium 509 kilograms, monoammonium phosphate 66 kilograms, potassium sulfate 392 kilograms, N-serve 0.5 kilogram, coating agent 2 kilograms, talcum powder 5 kilograms and ground silica 25.5 kilograms composition.
Embodiment 10
Above-described embodiment 5-9 high tower durable composite fertilizer preparation method for material is: by nitre phosphorus ammonium, monoammonium phosphate, and potassium sulfate and ground silica carry out automatic blending, particle is less than to solid slurrying under temperature is 160 DEG C of conditions of 0.5mm; Then through tempering tank mixing, then spray in prilling tower through shower nozzle, cooling curing becomes particle diameter to be 2.2mm particle in atmosphere, and particle, through conveyor, cooler, vibratory screening apparatus, makes the particle of same particle diameter more than 95%; Then by granulated fertilizer through spouted bed coating machine by the N-serve of formula ratio and coating agent coating under temperature is 85 DEG C of conditions, then the surface of talcum powder puff at particle, make compound fertilizer granule surface form one deck anti-caking film, obtain high tower long-acting compound fertilizer.
In the high tower long-acting compound fertilizer that the present embodiment obtains, the weight ratio of nitrogen, Vanadium Pentoxide in FLAKES and potassium oxide is 16:8:21, wherein nitrogen is made up of nitric nitrogen and ammonium nitrogen, the weight ratio of nitric nitrogen is 8%, and the weight ratio of ammonium nitrogen is 8%, and the mol ratio of its nitric nitrogen and ammonium nitrogen is 1:1.
Example 5-9 high tower slow-release nitro compound manure, and be contrast (N-P-K content is identical) with the compound manure not containing N-serve, manure trial is carried out to being planted in Haikou City, Hainan Province banana, experimental field soil type is red soil, physical features is smooth, and soil fertility is medium, has representative widely in locality, soil organic matter content is 3.35%, alkali-hydrolyzable nitrogen 99.3mg/kg, rapid available phosphorus 9.1mg/kg, available potassium 70.2mg/kg, pH value 5.30.Blank is set in experiment, does not carry out 7 process containing the compound manure (common nitro-compound fertilizer material) of N-serve, the high tower long-acting compound fertilizer of embodiment 5-9 production, 3 repetitions are done in often kind of process, then get its mean value, concrete fertilization time, dose and method are as shown in table 1:
Table 1 banana manure trial fertilization time, dose and method
| Time after field planting | Rate of fertilizer application (g/ strain) | Fertilizing method |
| 10 days | Common nitro-compound fertilizer material process 10g/ strain, high tower long-acting compound fertilizer process 8g/ strain | Be watered pouring to execute |
| 20 days | Common nitro-compound fertilizer material process 10g/ strain, high tower long-acting compound fertilizer process 8g/ strain | Be watered pouring to execute |
| 30 days | Common nitro-compound fertilizer material process 10g/ strain, high tower long-acting compound fertilizer process 8g/ strain | Be watered pouring to execute |
| 40 days | Common nitro-compound fertilizer material process 100g/ strain, high tower long-acting compound fertilizer process 80g/ strain | Spread manuer in holes, earthing |
| 50 days | Common nitro-compound fertilizer material process 100g/ strain, high tower long-acting compound fertilizer process 80g/ strain | Spread manuer in holes, earthing |
| 60 days | Common nitro-compound fertilizer material process 100g/ strain, high tower long-acting compound fertilizer process 80g/ strain | Spread manuer in holes, earthing |
| 80 days | Common nitro-compound fertilizer material process 250g/ strain, high tower long-acting compound fertilizer process 200g/ strain | Ditch spread |
| 100 days | Common nitro-compound fertilizer material process 250g/ strain, high tower long-acting compound fertilizer process 200g/ strain | Ditch spread |
| 115 days | Common nitro-compound fertilizer material process 250g/ strain, high tower long-acting compound fertilizer process 200g/ strain | Ditch spread |
| 130 days | Common nitro-compound fertilizer material process 400g/ strain, high tower long-acting compound fertilizer process 320g/ strain | Ditch spread |
| 145 days | Common nitro-compound fertilizer material process 200g/ strain, high tower long-acting compound fertilizer process 1600g/ strain | Ditch spread |
| 160 days | Common nitro-compound fertilizer material process 200g/ strain, high tower long-acting compound fertilizer process 160g/ strain | Ditch spread |
| 180 days | Common nitro-compound fertilizer material process 150g/ strain, high tower long-acting compound fertilizer process 120g/ strain | Spread fertilizer over the fields in conjunction with pouring water |
| 200 days | Common nitro-compound fertilizer material process 150g/ strain, high tower long-acting compound fertilizer process 120g/ strain | Spread fertilizer over the fields in conjunction with pouring water |
Then detect the banana production of each experimental group, and calculate its stimulation ratio, its result is as shown in table 2:
Table 2 banana production result
As known from Table 2, use not containing N-serve compound manure after banana production be 3271.7 thousand grams/acre; After using high tower long-acting compound fertilizer prepared by embodiment 5-9, banana production is respectively 3301.9 thousand grams/acre, 3605.2 thousand grams/acre, 3631.7 thousand grams/acre, 3586.8 thousand grams/acre, 3338.9 thousand grams/acre, with use not containing N-serve compound manure compared with banana production improve 0.1%, 10.2%, 11.0%, 9.6% and 2.1% respectively.Banana test-results shows, the nitrification inhibitor 2-chloro-6-trichloromethyl pyrrole that the basis of joint fertile 20% is added 0.2%-0.4% can significantly improve the output of banana, fully shows the performance of high tower long-acting compound fertilizer of the present invention.
What finally illustrate is, above preferred embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although by above preferred embodiment to invention has been detailed description, but those skilled in the art are to be understood that, various change can be made to it in the form and details, and not depart from claims of the present invention limited range.
Claims (4)
1. a high tower long-acting compound fertilizer, is characterized in that: in described compound manure containing weight ratio be 0.2 ‰-0.4 ‰ N-serve and weight ratio be the nitrogen of 14-16:6-8:20-21, Vanadium Pentoxide in FLAKES and potassium oxide; Its preparation method is by nitre phosphorus ammonium, and monoammonium phosphate and potassium sulfate carry out automatic blending, particle is less than to solid slurrying under temperature is 140 ~ 170 DEG C of conditions of 0.5mm; Then through tempering tank mixing, then spray in prilling tower through shower nozzle, cooling curing becomes particle diameter to be 2.2 ~ 4.5mm particle in atmosphere, and particle, through conveyor, cooler, vibratory screening apparatus, makes the particle of same particle diameter more than 95%; Then by granulated fertilizer through spouted bed coating machine by the N-serve of formula ratio and coating agent coating under temperature is 80 ~ 90 DEG C of conditions, then the surface of talcum powder puff at particle, make compound fertilizer granule surface form one deck anti-caking film, obtain high tower long-acting compound fertilizer.
2. high tower long-acting specific composite fertilizer material according to claim 1, is characterized in that: containing weight ratio in described compound manure is the N-serve of 0.3 ‰.
3. high tower long-acting compound fertilizer according to claim 2, is characterized in that: the weight ratio of described nitrogen, Vanadium Pentoxide in FLAKES and potassium oxide is 15:7:21.
4. the preparation method of high tower long-acting compound fertilizer described in any one of claim 1-3, it is characterized in that, comprise the steps: that, by nitre phosphorus ammonium, monoammonium phosphate and potassium sulfate carry out automatic blending, particle is less than to solid slurrying under temperature is 140 ~ 170 DEG C of conditions of 0.5mm; Then through tempering tank mixing, then spray in prilling tower through shower nozzle, cooling curing becomes particle diameter to be 2.2 ~ 4.5mm particle in atmosphere, and particle, through conveyor, cooler, vibratory screening apparatus, makes the particle of same particle diameter more than 95%; Then by granulated fertilizer through spouted bed coating machine by the N-serve of formula ratio and coating agent coating under temperature is 80 ~ 90 DEG C of conditions, then the surface of talcum powder puff at particle, make compound fertilizer granule surface form one deck anti-caking film, obtain high tower long-acting compound fertilizer.
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| CN104262065B (en) * | 2014-10-28 | 2017-03-15 | 中化（烟台）作物营养有限公司 | A kind of slow long-acting compound fertilizer of containing nitrogenous fertilizers synergist and preparation method thereof |
| CN105272779A (en) * | 2015-11-18 | 2016-01-27 | 广东省农业科学院蔬菜研究所 | Long-acting and quick-acting combined special compound fertilizer for fruits and vegetables in South China |
| CN106008003A (en) * | 2016-05-31 | 2016-10-12 | 史丹利化肥扶余有限公司 | High tower granulation produced high concentration compound fertilizer and production method thereof |
| CN106278764B (en) * | 2016-08-08 | 2020-07-03 | 中化化肥有限公司 | Method for preparing compound fertilizer containing microcapsule type fertilizer synergist and prepared compound fertilizer |
| CN112919981A (en) * | 2021-04-13 | 2021-06-08 | 福建恒生态建筑工程有限公司 | Process for composting branches and excrement |
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| CN1130609A (en) * | 1995-03-06 | 1996-09-11 | 姜传书 | Long-acting urea coated with rare-earth |
| JP2008063543A (en) * | 2006-09-11 | 2008-03-21 | Japan International Research Center For Agricultural Services | Nitrification inhibitor, and soil conditioner and fertilizer containing the same |
| CN102557815B (en) * | 2010-12-31 | 2013-12-04 | 施可丰化工股份有限公司 | Multifunctional synergist of compound fertilizer |
| CN102249817B (en) * | 2011-04-21 | 2013-08-28 | 浙江奥复托化工有限公司 | Preparation for inhibiting soil nitrogen loss as well as preparation method and application thereof |
| CN102627516A (en) * | 2012-04-27 | 2012-08-08 | 潍坊弗兰德肥料有限公司 | Stable long-acting composite fertilizer with quick-acting function and preparation method |
| CN102675001A (en) * | 2012-05-18 | 2012-09-19 | 沈阳农业大学 | Carbon-based fertilizer potentiating agent and application thereof |
| CN102850131A (en) * | 2012-09-24 | 2013-01-02 | 株洲市农业科学研究所、株洲市三生肥业有限公司 | Multifunctional slow-release/controlled-release fertilizer synergist and production technique of synergist |
| CN102976857B (en) * | 2012-12-17 | 2015-04-01 | 浙江奥复托化工有限公司 | Synergistic nitrogenous fertilizer and preparation method thereof |
| CN103044137B (en) * | 2012-12-26 | 2014-11-12 | 南通联农农药制剂研究开发有限公司 | Nitrogen fertilizer stabilizer composition and preparation method thereof |
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Effective date of registration: 20221108 Address after: 402284 Degan Industrial Park, Jiangjin District, Chongqing Patentee after: NANNING JIUHE CETU FERTILIZER COMPOUNDING CO.,LTD. Address before: Floor 5, Kowloon Pearl Building, No. 33, Xijiao Road, Jiulongpo District, Chongqing 400050 Patentee before: JIUHE Co.,Ltd. |