CN107473875A - A kind of slow-release suspension liquid composite fertilizer and preparation method thereof - Google Patents

A kind of slow-release suspension liquid composite fertilizer and preparation method thereof Download PDF

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Publication number
CN107473875A
CN107473875A CN201710989877.1A CN201710989877A CN107473875A CN 107473875 A CN107473875 A CN 107473875A CN 201710989877 A CN201710989877 A CN 201710989877A CN 107473875 A CN107473875 A CN 107473875A
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CN
China
Prior art keywords
slow
fertilizer
composite fertilizer
suspension liquid
liquid composite
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CN201710989877.1A
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Chinese (zh)
Inventor
刘峰
王福建
刘苗苗
刘换丽
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SHANGDONG PUJIN FERTILIZER CO Ltd
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SHANGDONG PUJIN FERTILIZER CO Ltd
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Priority to CN201710989877.1A priority Critical patent/CN107473875A/en
Publication of CN107473875A publication Critical patent/CN107473875A/en
Pending legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
    • C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05B—PHOSPHATIC FERTILISERS
    • C05B7/00—Fertilisers based essentially on alkali or ammonium orthophosphates
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
    • C05G5/00—Fertilisers characterised by their form
    • C05G5/20—Liquid fertilisers
    • C05G5/27—Dispersions, e.g. suspensions or emulsions

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Pest Control & Pesticides (AREA)
  • Dispersion Chemistry (AREA)
  • Fertilizers (AREA)

Abstract

The invention discloses a kind of slow-release suspension liquid composite fertilizer and preparation method thereof, the slow-release suspension liquid composite fertilizer includes nitrogen-containing material, phosphorous raw material, raw material containing potassium and functional auxiliary material, and the slow-release suspension liquid composite fertilizer includes forming according to the following component of mass percent：The following component that the nitrogen-containing material includes mass percent forms：Urea 40 50%, ammonium nitrate 12 20%；The following component that the phosphorous raw material includes mass percent forms：APP 5 10%；The following component that the raw material containing potassium includes mass percent forms：Potassium chloride 40 50%, potassium nitrate or potassium dihydrogen phosphate 20 31%.The slow-release suspension liquid composite fertilizer of the present invention has height suspension, high stability, high fluidity, nitrogen, phosphorus, potassium, humic acid and trace element therein have the function that quick-acting and slow combines, disclosure satisfy that the short-term and long-term nutritional need of various crops.

Description

A kind of slow-release suspension liquid composite fertilizer and preparation method thereof
Technical field
The invention belongs to chemical industry technical field of fertilizers, more particularly, to a kind of slow-release suspension liquid composite fertilizer and its preparation Method.
Background technology
Fertilizer refers to provide nutrient necessary to one or more kinds of plants, improves soil property, improves soil fertilizer The horizontal a kind of material of power, is one of material base of agricultural production.Mainly include ammonium phosphate fertilizers, Macroelement water-soluble Fertilizer, secondary nutrients, bio-feritlizer, organic fertilizer, multidimensional field energy concentrated organic fertilizer etc..
Organic fertilizer includes organic nitrogenous fertilizer, synthetic organic nitrogen fertilizer etc..China's someone's Animal fecal pollution accustomed to using, green manure, Barnyard manure, compost, make compost with biogas manure etc..Organic and inorganic fertilizer is semi-organic fertilizer, is that organic fertilizer passes through machine with inorganic fertilizer The fertilizer that tool mixes or chemical reaction forms.
Because a kind of fertilizer often has more attribute, in addition to above-mentioned classification, other also common sorting techniques：1. press fertilizer Physical state can be divided into solid and fluid fertilizer.Solid fertilizer is divided into powdery and granular fertilizer again.Fluid fertilizer is normal temperature and pressure It is in the fertilizer of liquid condition down.2. by the chemical property of fertilizer, chemical acid, chemistry alkalescence and chemically neutral fertilizer can be divided into. 3. physiological neutral, physiological alkalinity and physiological phenomenon fertilizer can be divided into the influence of soil reaction after being absorbed by fertilizer by Plant choosing Material.4. quick-acting, slow effect and controlled availability fertilizer can be divided into the validity of plant by nutrient in fertilizer.
At present, lacking one kind has height suspension, the slow-release suspension liquid composite fertilizer of high stability and its preparation side Method.
The content of the invention
Regarding the issue above, the present invention provides a kind of have height suspension, the slow-release suspension of high stability Liquid composite fertilizer and preparation method thereof.
To reach above-mentioned purpose, present invention employs following technical proposal：A kind of slow-release suspension liquid of the present invention is compound Fertilizer, the slow-release suspension liquid composite fertilizer includes nitrogen-containing material, phosphorous raw material, raw material containing potassium and functional auxiliary material, described Slow-release suspension liquid composite fertilizer includes forming according to the following component of mass percent：
The following component that the nitrogen-containing material includes mass percent forms：
Urea 40-50%,
Ammonium nitrate 12-20%；
The following component that the phosphorous raw material includes mass percent forms：
APP 5-10%；
The following component that the raw material containing potassium includes mass percent forms：
Potassium chloride 40-50%,
Potassium nitrate or potassium dihydrogen phosphate 20-31%；
The following component that the functional auxiliary material includes mass percent forms：
Trace element fertilizer 2-3%,
Synergist 0.5- 1%,
Suspending agent 0.1-0.2%,
Antifreezing agent 2-5%.
Further, described suspending agent is the combination of one or both of xanthans, polyacrylamide.
The preparation method of slow-release suspension liquid composite fertilizer of the present invention, comprises the following steps：
（1）Prepare urea liquid：Exist after the urea in feed bin is measured by meter and be discharged into blender, have in blender Agitator and steam-heated pipe line, the water for flowing through spinner flowmeter is added, be passed through steam and mix dissolving 1-2h, be made into nitrogenous Measure the urea liquid for 28-32%；
（2）Add phosphorus ammonium, potassium chloride and trace-element fertilizer：Phosphorus ammonium in feed bin, potassium chloride and trace element is stored in pass through It is discharged into blender after meter metering, is then slowly added into urea liquid, is mixed to abundant dissolving；
（3）The addition functional additive that first two steps prepare, is warming up to 70-80 DEG C, is stirred for mixing 1-2h, obtained well mixed Suspension type liquid fertilizer, packed after mixing；
（4）Fertilizer is needed to stand 48 hours, is dispatched from the factory after stable, slow-release suspension liquid composite fertilizer is made.
Further, in step（1）In, it is passed through steam and mixes dissolving 1.5h, it is molten is made into the urea that nitrogen content is 30% Liquid.
Further, in step（3）In, addition functional additive that first two steps prepare is warming up to 75 DEG C, is stirred for mixing 1.5h。
Beneficial effect：The slow-release suspension liquid composite fertilizer of the present invention has height suspension, high stability, height flowing Property, nitrogen, phosphorus, potassium, humic acid and trace element therein have the function that quick-acting and slow combines, disclosure satisfy that various farmings The short-term and long-term nutritional need of thing.
Compared with prior art, the invention has the advantages that：
（1）Contain whole nutrients required for plant growth due to product, all formulas are all according to required for plant growth Nutritional need feature design so that its utilization rate of fertilizer is 2-3 times of conventional composite chemical fertilizer.Match it is scientific and reasonable, Continuous administration, while high yield, quality better is ensured, it can effectively strengthen plant resistance, reduce the generation of disease.
（2）Product suspension type liquid fertilizer of the present invention will not typically be deposited and be longer than two weeks by the way of now with the current. By there is colloid break-in homogenizer in autonomous plus fertilizer station, meeting periodic agitation, solves the lamination problem of suspension.
（3）Clear liquid type, suspension type liquid fertilizer are developed, including ammino acid liquid fertilizer, humic acid liquid fertilizer, product are divided into High nitrogen type, balanced type, high potassium type, these three fertilizer can meet various crops the different times the needs of substantially.
（4）Slow-release suspension liquid composite fertilizer needs to use functional auxiliary material, such as suspending agent, antifreezing agent etc..Function Property auxiliary material typically has sustained release agent, suspending agent etc..Slow-release suspension liquid composite fertilizer is similar to clear liquid fertilizer formula, but can apply Further amounts of supersaturated fertilizer not soluble in water, therefore concentration can increase substantially.
Embodiment
Following examples only exist in illustrative purpose, without being intended to limit the scope of the present invention.
Embodiment 1
A kind of slow-release suspension liquid composite fertilizer of the present invention, the slow-release suspension liquid composite fertilizer include nitrogen-containing material, contained Phosphorus raw material, raw material containing potassium and functional auxiliary material, the slow-release suspension liquid composite fertilizer are included according to the as follows of mass percent Component forms：
The following component that the nitrogen-containing material includes mass percent forms：
Urea 40%,
Ammonium nitrate 12%；
The following component that the phosphorous raw material includes mass percent forms：
APP 10%；
The following component that the raw material containing potassium includes mass percent forms：
Potassium chloride 10%,
Potassium nitrate or potassium dihydrogen phosphate 20%；
The following component that the functional auxiliary material includes mass percent forms：
Trace element fertilizer 2%,
Synergist 1%,
Suspending agent 0.2%,
Antifreezing agent 4.8%.
Described suspending agent is xanthans.
The preparation method of slow-release suspension liquid composite fertilizer of the present invention, comprises the following steps：
（1）Prepare urea liquid：Exist after the urea in feed bin is measured by meter and be discharged into blender, have in blender Agitator and steam-heated pipe line, the water for flowing through spinner flowmeter is added, be passed through steam and mix dissolving 1h, be made into nitrogen content For 32% urea liquid；
（2）Add phosphorus ammonium, potassium chloride and trace-element fertilizer：Phosphorus ammonium in feed bin, potassium chloride and trace element is stored in pass through It is discharged into blender after meter metering, is then slowly added into urea liquid, is mixed to abundant dissolving；
（3）The addition functional additive that first two steps prepare, is warming up to 80 DEG C, is stirred for mixing 1h, obtained well mixed suspension Type liquid fertilizer, packed after mixing；
（4）Fertilizer is needed to stand 48 hours, is dispatched from the factory after stable, slow-release suspension liquid composite fertilizer is made.
Embodiment 2
The difference of embodiment 2 and embodiment 1 is：A kind of slow-release suspension liquid composite fertilizer of the present invention, the slow-release suspension Liquid composite fertilizer includes nitrogen-containing material, phosphorous raw material, raw material containing potassium and functional auxiliary material, the slow-release suspension liquid composite fertilizer Material includes forming according to the following component of mass percent：
The following component that the nitrogen-containing material includes mass percent forms：
Urea 41.9%,
Ammonium nitrate 13%；
The following component that the phosphorous raw material includes mass percent forms：
APP 5%；
The following component that the raw material containing potassium includes mass percent forms：
Potassium chloride 10%,
Potassium nitrate or potassium dihydrogen phosphate 25%；
The following component that the functional auxiliary material includes mass percent forms：
Trace element fertilizer 2.5%,
Synergist 0.5%,
Suspending agent 0.1%,
Antifreezing agent 2%.
Described suspending agent is two kinds of combination in xanthans, polyacrylamide.
The preparation method of slow-release suspension liquid composite fertilizer of the present invention, comprises the following steps：
In step（1）In, prepare urea liquid：Exist after the urea in feed bin is measured by meter and be discharged into blender, There are agitator and steam-heated pipe line in blender, add the water for flowing through spinner flowmeter, be passed through steam and mix dissolving 2h, It is made into the urea liquid that nitrogen content is 28%；
In step（2）In, add phosphorus ammonium, potassium chloride and trace-element fertilizer：It is stored in phosphorus ammonium in feed bin, potassium chloride and micro member Element is discharged into blender after being measured by meter, is then slowly added into urea liquid, is mixed to abundant Dissolving；
In step（3）In, addition functional additive that first two steps prepare is warming up to 70 DEG C, is stirred for mixing 2h, obtained mixing Even suspension type liquid fertilizer, packed after mixing；
In step（4）In, fertilizer is needed to stand 48 hours, is dispatched from the factory after stable, slow-release suspension liquid composite fertilizer is made.
Embodiment 3
The difference of embodiment 3 and embodiment 1 is：The present invention's
A kind of slow-release suspension liquid composite fertilizer of the present invention, the slow-release suspension liquid composite fertilizer include nitrogen-containing material, contained Phosphorus raw material, raw material containing potassium and functional auxiliary material, the slow-release suspension liquid composite fertilizer are included according to the as follows of mass percent Component forms：
The following component that the nitrogen-containing material includes mass percent forms：
Urea 40-50%,
Ammonium nitrate 12-20%；
The following component that the phosphorous raw material includes mass percent forms：
APP 5-10%；
The following component that the raw material containing potassium includes mass percent forms：
Potassium chloride 40-50%,
Potassium nitrate or potassium dihydrogen phosphate 20-31%；
The following component that the functional auxiliary material includes mass percent forms：
Trace element fertilizer 2-3%,
Synergist 0.5- 1%,
Suspending agent 0.1-0.2%,
Antifreezing agent 2-5%.
Described suspending agent is polyacrylamide.
The preparation method of slow-release suspension liquid composite fertilizer of the present invention, comprises the following steps：
In step（1）In, prepare urea liquid：Exist after the urea in feed bin is measured by meter and be discharged into blender, There are agitator and steam-heated pipe line in blender, add the water for flowing through spinner flowmeter, be passed through steam and mix dissolving 1.5h, it is made into the urea liquid that nitrogen content is 30%.
In step（2）In, add phosphorus ammonium, potassium chloride and trace-element fertilizer：It is stored in phosphorus ammonium in feed bin, potassium chloride and micro- Secondary element is discharged into blender after being measured by meter, is then slowly added into urea liquid, mixed to Fully dissolving；
In step（3）In, addition functional additive that first two steps prepare is warming up to 75 DEG C, is stirred for mixing 1.5h, obtained mixed Even suspension type liquid fertilizer is closed, is packed after mixing；
In step（4）In, fertilizer is needed to stand 48 hours, is dispatched from the factory after stable, slow-release suspension liquid composite fertilizer is made.
Experiment 1
Manure trial report of the slow-release suspension liquid composite fertilizer of the present invention on celery
1 test objective
By station commission is saved, according to NY11 07- 2010, to the slow-release suspension liquid composite fertilizer of the present invention, technical indicator： N +P205+K20 50%；Zn+B:0. 2%- 3. 0%, pulvis, the effect of increasing production on celery is verified, for stepping on for the fertilizer Note and popularization provide scientific basis.
2 times and place
2. 1 test period
On November 22nd, 2014（Transplanting）On 2 12nd, 1（Meter production terminates）.
2. 2 test sites
Shandong Province orchid Ling County Shang Yanzhen Du Cun.
3 materials and methods
3. 1 for examination soil：Soil types is moisture soil, and the light earth of quality, fertility is better-than-average, and soil fertility is uniform, lets out and irrigates facility；Soil is supported Divide situation such as table 1.Soil nutrient status table is as shown in table 1：
Table 1
3. 2 for examination fertilizer
The slow-release suspension liquid composite fertilizer of the present invention, technical indicator：N+P205+K20 50%: Zn+B:0. 2%-3. 0%, Pulvis.
3. 3 experimental cultivars and planting type
Celery, oasis；Bend canopy cultivation.Transplanted on November 22nd, 2014, line-spacing 15cm, spacing in the rows 13cm, density 34200 Strain/667 m2；The production of 12 diaries in 2 months in 2015 terminates.
3. 4 test methods
4. 3. 1 experimental design
Experiment sets 3 processing
Processing 1:Conventional fertilizer application+spray for examination fertilizer
Processing 2:Conventional fertilizer application+spray equivalent clear water (CK)；
Processing 3:Conventional fertilizer application.Each zone leader 7m, wide 5m, area 35m2, 3 repetitions, random district's groups arrangement, cell week Enclose and set protection row.
4. 3. 2 fertilizing methods
1. conventional fertilizer application：Apply the m of decomposed dung 4000kg/6672, 45% composite fertilizer (20- 10- 15) 60kg/ 667m2。
2. for examination fertilizer：Processing l is sprayed for examination fertilizer respectively at December 8, December 18, December 28 Expect 600 dilutions；2 same periods spray equivalent clear water is handled, spraying even No drip type with the dry reverse side of blade is advisable；Other control measures are same Locality custom.
3.4. 3 harvest
Each experimental plot celery is harvested respectively, respectively meter production, and statistical analysis is carried out with total output.Counted on 2 12nd, 2015 Production terminates.
4 results and analysis
4. 1 sprays " slow-release suspension liquid composite fertilizer of the invention " to the shadow noon of celery biological character
Spraying " slow-release suspension liquid composite fertilizer of the invention " improves the biological character of celery.Can from table 2 Go out：Processing l relatively handles 2 (CK) of processing, 3 plant heights of processing averagely increase by 3. 2cm, 3. 4cm, single-strain blade number Averagely increase by 0. 4,0. 6, Weight per plant averagely increases by 10. 6g, 13. 8g.Illustrate on the basis of conventional fertilizer application On, spray that " slow-release suspension liquid composite fertilizer of the invention " can increase plant height, single-strain blade number and the Weight per plant of celery. Different disposal is investigated celery biological character as shown in table 2：
Table 2
（Note：Data are the average that three processing repeat three times in table）
4. 2 spray the influence of " slow-release suspension liquid composite fertilizer of the invention " to celery yield
From table 3 as can be seen that the kg of processing l celeries average product 4150. 2/667 m2, it is average compared with CK processing to increase Produce the m of celery 426. l kg/6672, rate of growth is 11. 4%；Underproduction celery 55. 6kg/ average compared with CK of processing 3 667m2, the underproduction 1.5%, it is seen that the slow-release suspension liquid composite fertilizer sprayed for the examination present invention can improve celery yield.Spray this Influence of the slow-release suspension liquid composite fertilizer of invention to celery yield is as shown in table 3：
Table 3
4. the variance analysis of 3 test datas statistics
As shown in table 4, p=0.7408 between district's groups>0.05, volume variance is not notable；P=0. 0043 between processing<0. 01, Volume variance reaches the pole level of signifiance between showing processing.Analysis of variance table is as shown in table 4：
Table 4
As shown in table 5, carry out Multiple range test with PLSD methods and show, volume variance reaches extremely notable water between handling l and CK It is flat；Volume variance is not notable between handling 3 and CK.Show under this experimental condition, spray the slow-release suspension liquid of the present invention 600 times of liquid of compound fertilizer, the yield of celery can be significantly improved.Multiple range test table is as shown in table 5：
Table 5
5 vehicle benefits situations are analyzed
As shown in table 6, celery average price presses 4. 0 yuan/kg, slow-release suspension liquid composite fertilizer price 5 of the invention Member/kg, yuan/day of labour 120, spray for 3 times and to be calculated for fertilising material with 1.5 work days, processing l is than CK increases 1522. 8 yuan/667m of net earnings2, input-output ratio is respectively 1:8. 4 remarkable in economical benefits.Vehicle benefits situation analytical table As shown in table 6：
Table 6
Place Reason Yield kg/ 667 m2 Unit price（Member/ kg ) Per mu yield value member/ 667 m2 Mu increment member/ 667 m2 Cost member/ 667 m2 Mu it is pure increase income member/ 667 m2 Input production Go out ratio
1 4920.6 4.0 19682.4 1158.8 182.7 976.1 5.3
2 （CK ） 4630.9 4.0 18523.6 / / / /
6 conclusion (of pressure testing)s
6. 1 celery sprays the slow-release suspension liquid composite fertilizer of the present invention, celery biological character can be significantly improved, with CK is compared, and can dramatically increase celery single-strain blade number, plant height and Weight per plant.
6. 2 celeries spray the slow-release suspension liquid composite fertilizer of the present invention, celery yield can be significantly improved.With compareing Compare, averagely increase production the l kg/ 667m of celery 426.2, rate of growth is 11. 4%；Averagely increase net earnings 1522. 8 Member/667m1, input-output ratio 1: 8. 4.Effect of increasing production is obvious, better economic benefit, there is good promotion prospect.
General principle, principal character and the advantages of the present invention of the present invention has been shown and described above.The technology of the industry Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the simply explanation described in above-described embodiment and specification is originally The principle of invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, the present invention Claimed scope is by appended claims, specification and its equivalent thereof.

Claims (5)

  1. A kind of 1. slow-release suspension liquid composite fertilizer, it is characterised in that：The slow-release suspension liquid composite fertilizer includes nitrogenous original Material, phosphorous raw material, raw material containing potassium and functional auxiliary material, the slow-release suspension liquid composite fertilizer are included according to mass percent Following component composition：
    The following component that the nitrogen-containing material includes mass percent forms：
    Urea 40-50%,
    Ammonium nitrate 12-20%；
    The following component that the phosphorous raw material includes mass percent forms：
    APP 5-10%；
    The following component that the raw material containing potassium includes mass percent forms：
    Potassium chloride 40-50%,
    Potassium nitrate or potassium dihydrogen phosphate 20-31%；
    The following component that the functional auxiliary material includes mass percent forms：
    Trace element fertilizer 2-3%,
    Synergist 0.5- 1%,
    Suspending agent 0.1-0.2%,
    Antifreezing agent 2-5%.
  2. 2. slow-release suspension liquid composite fertilizer according to claim 1, it is characterised in that：Described suspending agent is xanthan The combination of one or both of glue, polyacrylamide.
  3. 3. the preparation method of the slow-release suspension liquid composite fertilizer described in claim 1, it is characterised in that comprise the following steps：
    （1）Prepare urea liquid：Exist after the urea in feed bin is measured by meter and be discharged into blender, have in blender Agitator and steam-heated pipe line, the water for flowing through spinner flowmeter is added, be passed through steam and mix dissolving 1-2h, be made into nitrogenous Measure the urea liquid for 28-32%；
    （2）Add phosphorus ammonium, potassium chloride and trace-element fertilizer：Phosphorus ammonium in feed bin, potassium chloride and trace element is stored in pass through It is discharged into blender after meter metering, is then slowly added into urea liquid, is mixed to abundant dissolving；
    （3）The addition functional additive that first two steps prepare, is warming up to 70-80 DEG C, is stirred for mixing 1-2h, obtained well mixed Suspension type liquid fertilizer, packed after mixing；
    （4）Fertilizer is needed to stand 48 hours, is dispatched from the factory after stable, slow-release suspension liquid composite fertilizer is made.
  4. 4. the preparation method of slow-release suspension liquid composite fertilizer according to claim 3, it is characterised in that：In step（1） In, it is passed through steam and mixes dissolving 1.5h, is made into the urea liquid that nitrogen content is 30%.
  5. 5. the preparation method of slow-release suspension liquid composite fertilizer according to claim 3, it is characterised in that：In step（3） In, addition functional additive that first two steps prepare is warming up to 75 DEG C, is stirred for mixing 1.5h.
CN201710989877.1A 2017-10-23 2017-10-23 A kind of slow-release suspension liquid composite fertilizer and preparation method thereof Pending CN107473875A (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103922832A (en) * 2014-05-08 2014-07-16 江苏谷熠农业科技有限公司 Water-soluble fertilizer containing humic acid and production process of water-soluble fertilizer
CN104591930A (en) * 2014-11-13 2015-05-06 广州一翔农业技术有限公司 Slow-release fluid suspension composite fertilizer and its preparation method and use method
CN106365796A (en) * 2016-08-26 2017-02-01 广西慧投互联网金融服务有限公司 Suspension type liquid fertilizer production process
CN107056395A (en) * 2016-11-03 2017-08-18 驻马店安吉生物科技有限公司 High-efficient selenium-rich organic liquid fertilizer and preparation method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103922832A (en) * 2014-05-08 2014-07-16 江苏谷熠农业科技有限公司 Water-soluble fertilizer containing humic acid and production process of water-soluble fertilizer
CN104591930A (en) * 2014-11-13 2015-05-06 广州一翔农业技术有限公司 Slow-release fluid suspension composite fertilizer and its preparation method and use method
CN106365796A (en) * 2016-08-26 2017-02-01 广西慧投互联网金融服务有限公司 Suspension type liquid fertilizer production process
CN107056395A (en) * 2016-11-03 2017-08-18 驻马店安吉生物科技有限公司 High-efficient selenium-rich organic liquid fertilizer and preparation method thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
王连祥: "液体复混肥料生产技术初步探讨", 《化肥工业》 *

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Application publication date: 20171215

WD01 Invention patent application deemed withdrawn after publication