CN106748329A - A kind of special ureaformaldehyde stable fertilizer of paddy rice and preparation method thereof - Google Patents
A kind of special ureaformaldehyde stable fertilizer of paddy rice and preparation method thereof Download PDFInfo
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- CN106748329A CN106748329A CN201710135583.2A CN201710135583A CN106748329A CN 106748329 A CN106748329 A CN 106748329A CN 201710135583 A CN201710135583 A CN 201710135583A CN 106748329 A CN106748329 A CN 106748329A
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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
- C05G5/00—Fertilisers characterised by their form
- C05G5/10—Solid or semi-solid fertilisers, e.g. powders
- C05G5/12—Granules or flakes
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B7/00—Fertilisers based essentially on alkali or ammonium orthophosphates
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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
- C05G3/80—Soil conditioners
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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
- C05G3/90—Mixtures of one or more fertilisers with additives not having a specially fertilising activity for affecting the nitrification of ammonium compounds or urea in the soil
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/20—Reduction of greenhouse gas [GHG] emissions in agriculture, e.g. CO2
- Y02P60/21—Dinitrogen oxide [N2O], e.g. using aquaponics, hydroponics or efficiency measures
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Abstract
The invention discloses a kind of special ureaformaldehyde stable fertilizer of paddy rice, including following parts by weight raw material：360 450 parts of urea, 200 360 parts of MAP, 150 360 parts of potassium chloride, 50 150 parts of formaldehyde, 0.1 10 parts of urease inhibitor, 0.1 10 parts of nitrification inhibitor, 0.1 10 parts of APP, 0.1 15 parts of humic acid, 0.1 10 parts of zinc sulfate, 0.1 10 parts of flyash, 5 30 parts of filler.The present invention can improve utilization rate of fertilizer, reduce nutrient loss, extend fertilizer releasing period, and proportioning science, upgrading volume increase have the function of urea-formaldehyde fertilizer and stable fertilizer concurrently.
Description
Technical field
The invention belongs to technical field of fertilizers, and in particular to a kind of special ureaformaldehyde stable fertilizer of paddy rice and its preparation side
Method.
Background technology
With the development of China's modern agriculture, society to safe and high quality, the agricultural input product demand of environment-friendly high-efficiency increasingly
Greatly.Fertilizer, as " grain of grain ", is to ensure national food security to promoting crop upgrading volume increase to have great importance
Important Agricultural input.However, China's chemical fertilizer has low utilization rate of fertilizer, fertilizer nutrient serious waste of resources, fertilization mode
Not the problems such as science, this does not meet the demand for development of China's ecological efficient agricultural.Therefore, research and develop green, safe and efficient new
Fertilizer is very urgent.Urea-formaldehyde fertilizer and stable fertilizer overcome many deficiencies of conventional fertilizers, by increasing capacitance it is possible to increase crop is to nutrient
Absorption, reduce nutrient loss, improve utilization rate of fertilizer, promote crop upgrading volume increase, be that application effect is good, have wide range of applications
New-type fertilizer.
At present, paddy rice special utility fertilizer product species lacks.Therefore, for paddy rice regulation of fertilizer requirement, scientific design fertilizer
Nutrient formula, urea-formaldehyde fertilizer is combined with stable fertilizer production technology, and research and development have urea-formaldehyde fertilizer and stable fertilizer work(concurrently
The paddy rice-dedicated fertilizer of energy feature, to applying fertilizers scientifically, ensureing that Rice Production is significant safely.
The content of the invention
To make up the deficiencies in the prior art, a kind of utilization rate of fertilizer of present invention offer is high, and fertilizer releasing period paddy rice long is special
With ureaformaldehyde stable fertilizer and preparation method thereof, science is matched, upgrading volume increase has the work(of urea-formaldehyde fertilizer and stable fertilizer concurrently
Energy.
The present invention is achieved through the following technical solutions：
A kind of special ureaformaldehyde stable fertilizer of paddy rice, it is characterized in that：
Raw material including following parts by weight：
Urea 360-450 parts,
MAP 200-360 parts,
Potassium chloride 150-360 parts,
Formaldehyde 50-150 parts,
Urease inhibitor 0.1-10 parts,
Nitrification inhibitor 0.1-10 parts,
APP 0.1-10 parts,
Humic acid 0.1-15 parts,
Zinc sulfate 0.1-10 parts,
Flyash 0.1-10 parts,
Filler 5-30 parts.
Preferred scheme of the invention is, a kind of special ureaformaldehyde stable fertilizer of paddy rice, including following parts by weight original
Material：
Urea 380-420 parts,
MAP 220-320 parts,
Potassium chloride 180-280 parts,
Formaldehyde 80-120 parts,
Urease inhibitor 1-5 parts,
Nitrification inhibitor 1-5 parts,
APP 1-5 parts,
Humic acid 1-10 parts,
Zinc sulfate 1-5 parts,
Flyash 1-5 parts,
Filler 10-20 parts.
Further, optimal case of the invention is, a kind of special ureaformaldehyde stable fertilizer of paddy rice, including following weight
The raw material of number：
400 parts of urea,
270 parts of MAP,
200 parts of potassium chloride,
100 parts of formaldehyde,
2 parts of urease inhibitor,
2 parts of nitrification inhibitor,
2 parts of APP,
5 parts of humic acid,
2 parts of zinc sulfate,
2 parts of flyash,
15 parts of filler.
The special ureaformaldehyde stable fertilizer of paddy rice of the invention, the urease inhibitor be normal-butyl thiophosphoryl triamine,
One or more mixture of diphenylphosphoryl diamines, thiocarbamide.
The special ureaformaldehyde stable fertilizer of paddy rice of the invention, the nitrification inhibitor is double cyanogen ammoniums, coating calcium carbide, 2-
Chloro- 6-（Trichloromethyl）One or more mixture of pyridine, ATS (Ammonium thiosulphate).
The special ureaformaldehyde stable fertilizer of paddy rice of the invention, the humic acid molecular weight is 2000-5000, and outward appearance is in brown
Black powder, nitrogen content is 2-5%, is mass percent.
The special ureaformaldehyde stable fertilizer of paddy rice of the invention, the filler is ammonium nitrate, ammonium nitrate phosphorus, magnesium sulfate, chlorination
One or more mixture in ammonium, ammonium sulfate, potassium sulfate, potassium nitrate, clay, talcum powder, bentonite, diatomite.
The special ureaformaldehyde stable fertilizer of paddy rice of the invention,
The urea is small particle urea, and particle diameter is 0.85-2.80mm, and wherein nitrogen content is 46.2%；
The MAP is ordinary powder shape, and wherein nitrogen content is 11%, and phosphorus content is 44%；
Potassium content is 60% in the potassium chloride；
The formaldehyde is formalin that mass concentration is 37%；
The APP for powdered, wherein nitrogen content >=24%, phosphorus content >=46%；
The zinc sulfate for powdered, wherein Zn content >=21.5%；
The flyash for powdered, wherein dioxide-containing silica >=40%；
Above-mentioned content is mass content；In terms of nitrogen, in terms of phosphorus pentoxide, potassium content is with oxygen for phosphorus content for wherein nitrogen content
Change potassium meter, Zn content is in terms of zinc oxide.
Further, the special ureaformaldehyde stable fertilizer of paddy rice of the invention, the raw material in addition to urea, formaldehyde, remaining
The particle diameter of raw material is respectively less than 1mm.
A kind of preparation method of the special ureaformaldehyde stable fertilizer of paddy rice of the invention, comprises the following steps：
（1）Urea is delivered to urea molten tank melting, the urine part after melting is delivered to ureaformaldehyde reactive tank, another part
It is delivered to urine buffer groove；
（2）Filler is added in ureaformaldehyde reactive tank, ureaformaldehyde reaction pump is delivered to after being mixed with molten urea solution in groove, it is anti-in ureaformaldehyde
The entrance of pump is answered to add the formaldehyde vapour concentrated through rectifying column vaporization, reaction product is delivered to MAP mixing after fast reaction
Groove；
（3）Urine from urine buffer groove is delivered to potash fertilizer mixing channel, suppresses with the potassium chloride from feeding post, urase
Agent, nitrification inhibitor, APP, humic acid, zinc sulfate, flyash, filler are sufficiently mixed；Mixture is delivered to phosphoric acid one
Ammonium mixing channel；
（4）In MAP mixing channel, by the ureaformaldehyde liquid from ureaformaldehyde reaction pump, the mixture from potash fertilizer mixing channel and come
It is well mixed from the MAP in feeding post, sprinkling pelleting is carried out into granulation tower shower nozzle, when spray tear drop is in granulation tower
When being dropped through the air stream of rising, cooling and solidifying forms particle；
（5）Further cool down, sieve, measure, pack, the special ureaformaldehyde stable fertilizer of paddy rice is obtained.
Preferably, a kind of preparation method of the special ureaformaldehyde stable fertilizer of paddy rice of the invention, step（2）In
Urine is 1.2-1.4 with the mol ratio of formaldehyde vapour, and urine is 105-120 DEG C with the reaction temperature of formaldehyde vapour, and the reaction time is 10-
30s；Step（3）The incorporation time of mixture is 10-20min in middle potash fertilizer mixing channel；Step（4）In middle MAP mixing channel
The mixing temperature of mixture is 95-105 DEG C, and incorporation time is 3-10min.
The beneficial effects of the invention are as follows：The present invention has the advantage of urea-formaldehyde fertilizer and stable fertilizer concurrently, and fertilizer is needed according to paddy rice
Rule and soil fertility situation, design special formulation fertilizer for rice material, to the suction of nutrient during scientific formulation, more conducively paddy growth
Receive；Add nitrification inhibitor and urease inhibitor simultaneously in fertilizer, can more effectively reduce the loss of nitrogen nutrient, improve
Fertilizer efficiency；With sustained release performance, the acquisition time of fertilizer nutrient can be extended, with volume increase fertilizer effect.
Specific embodiment
The present invention is elaborated with reference to embodiment, but protection scope of the present invention is not limited to embodiment,
It is every to be included within protection scope of the present invention without departing substantially from the change of present inventive concept or equivalent substitute.
Embodiment 1
A kind of special ureaformaldehyde stable fertilizer of paddy rice, is made up of the raw material of following parts by weight：
400 parts of urea,
270 parts of MAP,
200 parts of potassium chloride,
100 parts of formaldehyde,
2 parts of urease inhibitor,
2 parts of nitrification inhibitor,
2 parts of APP,
5 parts of humic acid,
2 parts of zinc sulfate,
2 parts of flyash,
15 parts of filler.
The special ureaformaldehyde stable fertilizer of paddy rice of the present embodiment, nitrogen, phosphorus pentoxide, potassium oxide content be respectively 21%,
12%th, 12%, it is mass percent.
The preparation method of the special ureaformaldehyde stable fertilizer of paddy rice of the present embodiment, comprises the following steps：
（1）400 parts of urea are delivered to urea molten tank melting, 90 parts of urines after melting are delivered to ureaformaldehyde reactive tank, 310 parts
Urine is delivered to urine buffer groove；
（2）Added in ureaformaldehyde reactive tank after molten urea solution is mixed in 5 parts of fillers, with groove and be delivered to ureaformaldehyde reaction pump, in urea
The entrance of aldehyde reaction pump adds 100 parts of formaldehyde vapour through rectifying column vaporization concentration, and adjustment urine exists with the mol ratio of formaldehyde vapour
Between 1.2-1.4, in the 105-120 DEG C of fast reaction in 30 seconds, reaction product is delivered to MAP mixing channel；
（3）Urine from urine buffer groove is delivered to potash fertilizer mixing channel, with 200 parts of potassium chloride from feeding post, 2 parts of ureas
Enzyme inhibitor, 2 parts of nitrification inhibitors, 2 parts of APPs, 5 parts of humic acids, 2 parts of zinc sulfate, 2 parts of flyash, 10 parts of fillers fill
Divide mixing；After mixing 10-20 minutes, MAP mixing channel is delivered to；
（4）In MAP mixing channel, then by the ureaformaldehyde liquid from ureaformaldehyde reaction pump, the mixture from potash fertilizer mixing channel and
270 parts of MAPs from feeding post are well mixed at 95-105 DEG C, after mixing 3-10 minutes, enter into granulation tower shower nozzle
Row sprinkling pelleting, when spray tear drop is dropped through the air stream of rising in granulation tower, cooling and solidifying forms particle；
（5）Further cool down, sieve, measure, pack, the special ureaformaldehyde stable fertilizer of paddy rice is obtained.
Embodiment 2
A kind of special ureaformaldehyde stable fertilizer of paddy rice, is made up of the raw material of following parts by weight：
400 parts of urea,
270 parts of MAP,
200 parts of potassium chloride,
100 parts of formaldehyde,
2 parts of APP,
5 parts of humic acid,
2 parts of zinc sulfate,
6 parts of flyash,
15 parts of filler.
The special ureaformaldehyde stable fertilizer of paddy rice of the present embodiment, nitrogen, phosphorus pentoxide, potassium oxide content be respectively 21%,
12%th, 12%, it is mass percent.
The preparation method of the special ureaformaldehyde stable fertilizer of paddy rice of the present embodiment, comprises the following steps：
（1）400 parts of urea are delivered to urea molten tank melting, 90 parts of urines after melting are delivered to ureaformaldehyde reactive tank, 310 parts
Urine is delivered to urine buffer groove；
（2）Added in ureaformaldehyde reactive tank after molten urea solution is mixed in 5 parts of fillers, with groove and be delivered to ureaformaldehyde reaction pump, in urea
The entrance of aldehyde reaction pump adds 100 parts of formaldehyde vapour through rectifying column vaporization concentration, and adjustment urine exists with the mol ratio of formaldehyde vapour
Between 1.2-1.4, in the 105-120 DEG C of fast reaction in 30 seconds, reaction product is delivered to MAP mixing channel；
（3）Urine from urine buffer groove is delivered to potash fertilizer mixing channel, gathers with 200 parts of potassium chloride from feeding post, 2 parts
Ammonium phosphate, 5 parts of humic acids, 2 parts of zinc sulfate, 6 parts of flyash, 10 parts of fillers are sufficiently mixed；After mixing 10-20 minutes, conveying
To MAP mixing channel；
（4）In MAP mixing channel, with the ureaformaldehyde liquid from ureaformaldehyde reaction pump, the mixture from potash fertilizer mixing channel and come
270 parts of MAPs from feeding post after mixing 3-10 minutes, are sprayed in 95-105 DEG C of mixing into granulation tower shower nozzle
Granulation, when spray tear drop is dropped through the air stream of rising in granulation tower, cooling and solidifying forms particle；
（5）Further cool down, sieve, measure, pack, the special ureaformaldehyde stable fertilizer of paddy rice is obtained.
Comparative example
With commercially available common NPK as a comparison case, wherein nitrogen, phosphorus pentoxide, potassium oxide content be respectively 15%, 15%,
15%, it is mass percent.
Manure trial
Test site：Jiangsu Province Huai'an Huaian area Bo Li towns.
For examination soil regime：Pilot region topsoil depth about 15cm, soil nutrient content：Organic matter 19.22g/
Kg, alkali-hydrolyzable nitrogen 92mg/kg, rapid available phosphorus 10.8mg/kg, available potassium 105mg/kg, pH 6.85.
Experimental cultivar：Huaihe River rice No. 5.
Test process：Fertilizer type sets comparative example, embodiment 1 and embodiment 2 and amounts to 3 treatment, each treatment cell face
Product is 18 square metres, each 3 repetition for the treatment of, totally 9 cells, random district's groups arrangement.Experimental plot is rectangle, minizone with
The low bank of earth between fields is built with plastic sheeting between treatment, single filling is carried out.Dose is 750kg/hm2, cell dose is 1.3kg, all fertilizer
Make base fertilizer disposably to apply, the middle and later periods does not topdress.Test and seedling is sowed on May 5th, 2016, June 5 transplanted, and transplanted close
Degree is set to 23cm × 12cm, and mu inserts 20,000 caves, per the seedling of cave 3, is harvested in October 5.Harvesting is first 3 days, and each cell is chosen representative
Property plant 15 root and stem of certain plants determine plant height, spike length, per total grain panicle number, Defined daily doses, mass of 1000 kernel situation, cell list receives single solarization and determines actual
Yield, as a result such as following table：
As seen from the above table, embodiment indices are above comparative example.Paddy growth index aspect, compared with comparative example, implements
The plant height of example 1 and embodiment 2 is respectively increased 6.2% and 3.1%, and spike length is respectively increased 18.5% and 11.3%, and effective fringe is respectively increased
4.1% and 2.1%, setting percentage is respectively increased 1.4% and 0.6%, the optimization that this explanation is matched by fertilizer nutrient, embodiment treatment
Fertilizer efficiency is above comparative example, is more beneficial for absorption of the paddy rice to nutrient；Yield index aspect, compared with comparative example, the He of embodiment 1
The mass of 1000 kernel of embodiment 2 is respectively increased 10.8% and 5.8%, and yield is respectively increased 11.1% and 5.5%, and this explanation embodiment is to paddy rice
Effect of increasing production be better than comparative example.Compared with Example 2, the indices of embodiment 1 increase, and this explanation with the addition of urea
After enzyme inhibitor and nitrification inhibitor, fertilizer efficiency more preferably, is more beneficial for paddy rice upgrading volume increase.
In sum, using the special ureaformaldehyde stable fertilizer of paddy rice of the invention, the growth of paddy rice and right can be promoted
The absorption of nutrient, scientific formulation, fertilizer efficiency time is long, effect is good, has the advantage of urea-formaldehyde fertilizer and stable fertilizer concurrently, promotes paddy rice
Upgrading is increased production, and is worthy to be popularized.
Claims (10)
1. the special ureaformaldehyde stable fertilizer of a kind of paddy rice, it is characterised in that：Raw material including following parts by weight：
Urea 360-450 parts,
MAP 200-360 parts,
Potassium chloride 150-360 parts,
Formaldehyde 50-150 parts,
Urease inhibitor 0.1-10 parts,
Nitrification inhibitor 0.1-10 parts,
APP 0.1-10 parts,
Humic acid 0.1-15 parts,
Zinc sulfate 0.1-10 parts,
Flyash 0.1-10 parts,
Filler 5-30 parts.
2. the special ureaformaldehyde stable fertilizer of a kind of paddy rice according to claim 1, it is characterised in that：The urase suppresses
Agent is one or more the mixture in normal-butyl thiophosphoryl triamine, diphenylphosphoryl diamines, thiocarbamide.
3. the special ureaformaldehyde stable fertilizer of a kind of paddy rice according to claim 1, it is characterised in that：The nitrification suppresses
Agent is double cyanogen ammoniums, coating calcium carbide, the chloro- 6- of 2-（Trichloromethyl）One or more mixed in pyridine, ATS (Ammonium thiosulphate)
Compound.
4. the special ureaformaldehyde stable fertilizer of a kind of paddy rice according to claim 1, it is characterised in that：The filler is
In ammonium nitrate, ammonium nitrate phosphorus, magnesium sulfate, ammonium chloride, ammonium sulfate, potassium sulfate, potassium nitrate, clay, talcum powder, bentonite, diatomite
One or more mixture.
5. the special ureaformaldehyde stable fertilizer of a kind of paddy rice according to claim 1, it is characterised in that：The humic acid point
Son amount is 2000-5000, and outward appearance is in brown-black powder shape, and nitrogen content is 2-5%, is mass percent.
6. the special ureaformaldehyde stable fertilizer of a kind of paddy rice according to any one of claim 1-5, it is characterised in that：
The urea is small particle urea, and particle diameter is 0.85-2.80mm, and wherein nitrogen content is 46.2%；
The MAP is ordinary powder shape, and wherein nitrogen content is 11%, and phosphorus content is 44%；
Potassium content is 60% in the potassium chloride；
The formaldehyde is formalin that mass concentration is 37%；
The APP for powdered, wherein nitrogen content >=24%, phosphorus content >=46%；
The zinc sulfate for powdered, wherein Zn content >=21.5%；
The flyash for powdered, wherein dioxide-containing silica >=40%；
Above-mentioned content is mass content；In terms of nitrogen, in terms of phosphorus pentoxide, potassium content is with oxygen for phosphorus content for wherein nitrogen content
Change potassium meter, Zn content is in terms of zinc oxide.
7. a kind of preparation method of the special ureaformaldehyde stable fertilizer of paddy rice according to any one of claim 1-5, its
It is characterised by：Comprise the following steps：
（1）Urea is delivered to urea molten tank melting, the urine part after melting is delivered to ureaformaldehyde reactive tank, another part
It is delivered to urine buffer groove；
（2）Filler is added in ureaformaldehyde reactive tank, ureaformaldehyde reaction pump is delivered to after being mixed with molten urea solution in groove, it is anti-in ureaformaldehyde
The entrance of pump is answered to add the formaldehyde vapour concentrated through rectifying column vaporization, reaction product is delivered to MAP mixing after fast reaction
Groove；
（3）Urine from urine buffer groove is delivered to potash fertilizer mixing channel, suppresses with the potassium chloride from feeding post, urase
Agent, nitrification inhibitor, APP, humic acid, zinc sulfate, flyash, filler are sufficiently mixed；Mixture is delivered to phosphoric acid one
Ammonium mixing channel；
（4）In MAP mixing channel, by the ureaformaldehyde liquid from ureaformaldehyde reaction pump, the mixture from potash fertilizer mixing channel and come
It is well mixed from the MAP in feeding post, sprinkling pelleting is carried out into granulation tower shower nozzle, when spray tear drop is in granulation tower
When being dropped through the air stream of rising, cooling and solidifying forms particle；
（5）Further cool down, sieve, measure, pack, the special ureaformaldehyde stable fertilizer of paddy rice is obtained.
8. the preparation method of the special ureaformaldehyde stable fertilizer of a kind of paddy rice according to claim 7, it is characterised in that：Step
Suddenly（2）Middle urine is 1.2-1.4 with the mol ratio of formaldehyde vapour；Urine is 105-120 DEG C with the reaction temperature of formaldehyde vapour, during reaction
Between be 10-30s.
9. the preparation method of the special ureaformaldehyde stable fertilizer of a kind of paddy rice according to claim 7, it is characterised in that：Step
Suddenly（3）The incorporation time of mixture is 10-20min in middle potash fertilizer mixing channel；Step（4）Mixture in middle MAP mixing channel
Mixing temperature be 95-105 DEG C, incorporation time is 3-10min.
10. the special ureaformaldehyde stable fertilizer of a kind of paddy rice according to claim 1, it is characterised in that：Including following heavy
Measure the raw material of number：
Urea 380-420 parts,
MAP 220-320 parts,
Potassium chloride 180-280 parts,
Formaldehyde 80-120 parts,
Urease inhibitor 1-5 parts,
Nitrification inhibitor 1-5 parts,
APP 1-5 parts,
Humic acid 1-10 parts,
Zinc sulfate 1-5 parts,
Flyash 1-5 parts,
Filler 10-20 parts.
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Application publication date: 20170531 |