CN108689777A - A kind of saline-alkali soil conditioner and preparation method thereof - Google Patents
A kind of saline-alkali soil conditioner and preparation method thereof Download PDFInfo
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- CN108689777A CN108689777A CN201810562044.1A CN201810562044A CN108689777A CN 108689777 A CN108689777 A CN 108689777A CN 201810562044 A CN201810562044 A CN 201810562044A CN 108689777 A CN108689777 A CN 108689777A
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- release membranes
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- fertilizer
- dispersion liquid
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- 239000003513 alkali Substances 0.000 title claims abstract description 19
- 239000003516 soil conditioner Substances 0.000 title claims abstract description 19
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 239000012528 membrane Substances 0.000 claims abstract description 83
- 239000000843 powder Substances 0.000 claims abstract description 35
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000003337 fertilizer Substances 0.000 claims abstract description 32
- 239000002253 acid Substances 0.000 claims abstract description 24
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims abstract description 23
- 239000000618 nitrogen fertilizer Substances 0.000 claims abstract description 23
- 239000002686 phosphate fertilizer Substances 0.000 claims abstract description 23
- 229940072033 potash Drugs 0.000 claims abstract description 23
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims abstract description 23
- 235000015320 potassium carbonate Nutrition 0.000 claims abstract description 23
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 claims abstract description 22
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000000835 fiber Substances 0.000 claims abstract description 14
- 239000002808 molecular sieve Substances 0.000 claims abstract description 14
- 229920002239 polyacrylonitrile Polymers 0.000 claims abstract description 14
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims abstract description 14
- JHUFGBSGINLPOW-UHFFFAOYSA-N 3-chloro-4-(trifluoromethoxy)benzoyl cyanide Chemical compound FC(F)(F)OC1=CC=C(C(=O)C#N)C=C1Cl JHUFGBSGINLPOW-UHFFFAOYSA-N 0.000 claims abstract description 13
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000000292 calcium oxide Substances 0.000 claims abstract description 12
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229960005070 ascorbic acid Drugs 0.000 claims abstract description 11
- 235000010323 ascorbic acid Nutrition 0.000 claims abstract description 11
- 239000011668 ascorbic acid Substances 0.000 claims abstract description 11
- 235000006408 oxalic acid Nutrition 0.000 claims abstract description 11
- 239000007788 liquid Substances 0.000 claims description 31
- 239000006185 dispersion Substances 0.000 claims description 30
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 24
- 238000002604 ultrasonography Methods 0.000 claims description 18
- ZCCIPPOKBCJFDN-UHFFFAOYSA-N calcium nitrate Chemical compound [Ca+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ZCCIPPOKBCJFDN-UHFFFAOYSA-N 0.000 claims description 14
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 13
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 13
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 13
- 229910021536 Zeolite Inorganic materials 0.000 claims description 8
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 8
- 239000010457 zeolite Substances 0.000 claims description 8
- 235000019441 ethanol Nutrition 0.000 claims description 7
- 239000012188 paraffin wax Substances 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 7
- 229920002518 Polyallylamine hydrochloride Polymers 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- KMQAPZBMEMMKSS-UHFFFAOYSA-K calcium;magnesium;phosphate Chemical compound [Mg+2].[Ca+2].[O-]P([O-])([O-])=O KMQAPZBMEMMKSS-UHFFFAOYSA-K 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 4
- NGLMYMJASOJOJY-UHFFFAOYSA-O azanium;calcium;nitrate Chemical compound [NH4+].[Ca].[O-][N+]([O-])=O NGLMYMJASOJOJY-UHFFFAOYSA-O 0.000 claims description 4
- 239000004202 carbamide Substances 0.000 claims description 4
- 239000002367 phosphate rock Substances 0.000 claims description 4
- 238000013268 sustained release Methods 0.000 claims description 4
- 239000012730 sustained-release form Substances 0.000 claims description 4
- 239000004743 Polypropylene Substances 0.000 claims 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims 1
- 150000001335 aliphatic alkanes Chemical class 0.000 claims 1
- 229920000333 poly(propyleneimine) Polymers 0.000 claims 1
- 239000002689 soil Substances 0.000 abstract description 13
- 150000003839 salts Chemical class 0.000 description 14
- 238000012360 testing method Methods 0.000 description 12
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 11
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- 239000003921 oil Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 239000013558 reference substance Substances 0.000 description 6
- 238000004088 simulation Methods 0.000 description 5
- 239000011780 sodium chloride Substances 0.000 description 5
- 239000005909 Kieselgur Substances 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- 238000001694 spray drying Methods 0.000 description 4
- 229920000742 Cotton Polymers 0.000 description 3
- 238000007922 dissolution test Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 210000002700 urine Anatomy 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910001868 water Inorganic materials 0.000 description 1
Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B13/00—Fertilisers produced by pyrogenic processes from phosphatic materials
- C05B13/02—Fertilisers produced by pyrogenic processes from phosphatic materials from rock phosphates
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B17/00—Other phosphatic fertilisers, e.g. soft rock phosphates, bone meal
-
- 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
- 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
- C05G5/30—Layered or coated, e.g. dust-preventing coatings
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Soil Sciences (AREA)
- Fertilizers (AREA)
Abstract
The invention discloses a kind of saline-alkali soil conditioners and preparation method thereof, a kind of saline-alkali soil conditioner includes inner core, interior release membranes, acid releasing layer and outer release membranes, interior release membranes are coated on outside inner core, outer release membranes are coated on outside interior release membranes, and acid releasing layer is between interior release membranes and outer release membranes;Inner core includes nitrogenous fertilizer, phosphate fertilizer and potash fertilizer;Interior release membranes are parafilm, and polyacrylonitrile fibre powder, the naphthenic oil of 4 ~ 6wt% and the molecular sieve powder of 8 ~ 10wt% of 12 ~ 15wt% are contained in parafilm;Oxalic acid or ascorbic acid are equipped in acid releasing layer;Outer release membranes are PP films, and Sodium Allyl Sulfonate, the calcium oxide of 2 ~ 3wt% and the diatomite of 5 ~ 6wt% of 3 ~ 4wt% are contained in PP films, have the advantages that improve salt-soda soil.
Description
Technical field
The present invention relates to a kind of saline-alkali soil conditioners and preparation method thereof.
Background technology
Salt-soda soil is a type of salt aggregation, refer to inside soil contained by salinity influence the normal life of crop
It is long.The formation of China's alkaline earth and alkali-affected soil, it is most of with Carbonates In Soil add up it is related, thus basicity generally compared with
Height, serious salt affected soil regional plant can hardly survive.
Therefore there is the modifying agent for developing a improvement salt affected soil certain production application to be worth.
Invention content
The first object of the present invention is to provide a kind of saline-alkali soil conditioner, has the advantages that improve salt-soda soil.
The present invention above-mentioned technical purpose technical scheme is that:
A kind of saline-alkali soil conditioner, including inner core, interior release membranes, acid releasing layer and outer release membranes, the interior sustained release
Film is coated on outside inner core, and the outer release membranes are coated on outside interior release membranes, it is described acidity releasing layer be located at interior release membranes and it is outer delay
It releases between film;
The inner core includes nitrogenous fertilizer, phosphate fertilizer and potash fertilizer;
The interior release membranes are parafilm, the polyacrylonitrile fibre powder containing 12~15wt% in the parafilm, 4~
The naphthenic oil of 6wt% and the molecular sieve powder of 8~10wt%;
It is equipped with oxalic acid or ascorbic acid in the acidity releasing layer;
The outer release membranes are PP films, the Sodium Allyl Sulfonate containing 3~4wt% in the PP films, 2~3wt% oxygen
Change the diatomite of calcium and 5~6wt%.
Further preferably:In the PP films also the zeolite powder containing 1~2wt%, the calcium nitrate of 1~2wt% and 1~
The polyvinyl alcohol of 2wt%;The also polyethylene of the polyallylamine hydrochloride containing 1~2wt% and 1~2wt% in the parafilm
Alcohol.
Further preferably:The interior release membranes, acid releasing layer, outer release membranes thickness be respectively 0.2~0.5,0.5
~1.0 and 0.2~0.5mm.
Further preferably:The nitrogenous fertilizer selects urea or calcium ammonium nitrate, the phosphate fertilizer to select calcium magnesium phosphate or ground phosphate rock,
The potash fertilizer selects plant ash.
The second object of the present invention is to provide a kind of preparation method of saline-alkali soil conditioner.
The present invention above-mentioned technical purpose technical scheme is that:
A kind of preparation method of soil conditioner, includes the following steps:
(1) it takes nitrogenous fertilizer, phosphate fertilizer and potash fertilizer to be mixed by recipe ratio, ether is added, ultrasound uniformly obtains dispersion liquid, by dispersion liquid
Spray drying obtains short grained inner core;
(2) it takes paraffin, polyacrylonitrile fibre powder, naphthenic oil and molecular sieve powder to be mixed by recipe ratio, is stirred and heated to just
Good melting completely, is put into inner core after stirring evenly, wait for fully coating interior release membranes on inner core, be cooled to 40 DEG C;
(3) oxalic acid or ascorbic acid are taken, ether is added, ultrasound uniformly obtains dispersion liquid, dispersion liquid is spray-dried to obtain
Short grained acid grain;The inner core for having coated interior release membranes for being cooled to 40 DEG C is put on the sour grain prepared, sour grain is sticked
Outside interior release membranes;
(4) it takes PP films, Sodium Allyl Sulfonate, calcium oxide and diatomite to be mixed by recipe ratio, ethyl alcohol is added, ultrasound is uniform to be obtained
To dispersion liquid, be sprayed on outside sour grain, air-dry to get.
Further preferably:Include the following steps:
(1) it takes nitrogenous fertilizer, phosphate fertilizer and potash fertilizer to be mixed by recipe ratio, ether is added, ultrasound uniformly obtains dispersion liquid, by dispersion liquid
Spray drying obtains short grained inner core;
(2) take paraffin, polyacrylonitrile fibre powder, naphthenic oil, molecular sieve powder, polyallylamine hydrochloride and polyvinyl alcohol by with
Side's ratio mixes, and is stirred and heated to just melting completely, inner core is put into after stirring evenly, and waits for fully coating interior sustained release on inner core
Film is cooled to 40 DEG C;
(3) oxalic acid or ascorbic acid are taken, ether is added, ultrasound uniformly obtains dispersion liquid, dispersion liquid is spray-dried to obtain
Short grained acid grain;The inner core for having coated interior release membranes for being cooled to 40 DEG C is put on the sour grain prepared, sour grain is sticked
Outside interior release membranes;
(4) take PP films, Sodium Allyl Sulfonate, calcium oxide, diatomite, zeolite powder, calcium nitrate and polyvinyl alcohol by recipe ratio
Ethyl alcohol is added in mixing, and ultrasound uniformly obtains dispersion liquid, is sprayed on outside sour grain, it is air-dried to get.
In conclusion the invention has the advantages that:
By the slow mechanism dissolved of outer release membranes under alkalinity and Variation of Salinity Condition, the sour grain in it is released, sour grain enters soil
The pH of middle improvement soil, then changes the permeable amount of interior release membranes using the neutrality of part near modifying agent or acid condition,
To slow release fertilizer, the purpose of the gentle release fertilizer of improvement soil is played;By improving outer release membranes and interior release membranes, into one
Step improves its applicability in the high pH of high salinity, while by the specific setting of outer release membranes, interior release membranes are changing permeable amount
While, paraffin is acted on by polyacrylonitrile fibre powder, molecular sieve, diatomite, zeolite powder to PP films, recoverable.
Specific implementation mode
This specific embodiment is only explanation of the invention, is not limitation of the present invention, people in the art
Member can as needed make the present embodiment the modification of not creative contribution after reading this specification, but as long as at this
It is all protected by Patent Law in the protection domain of invention.
Embodiment 1:A kind of saline-alkali soil conditioner, including inner core, interior release membranes, acid releasing layer and outer release membranes, it is interior
Release membranes are coated on outside inner core, and outer release membranes are coated on outside interior release membranes, and acid releasing layer is located at interior release membranes and outer release membranes
Between.Interior release membranes, acid releasing layer, outer release membranes thickness be respectively 0.5,1.0 and 0.5mm.
Inner core includes nitrogenous fertilizer, phosphate fertilizer and potash fertilizer, and nitrogenous fertilizer selects urea, phosphate fertilizer that calcium magnesium phosphate, potash fertilizer is selected to select plant ash.
Interior release membranes are parafilm, the polyacrylonitrile fibre powder containing 15wt% in parafilm, 6wt% naphthenic oil and
The molecular sieve powder of 10wt%.
Oxalic acid is equipped in acid releasing layer.
Outer release membranes are PP films, the Sodium Allyl Sulfonate containing 4wt% in PP films, the calcium oxide of 3wt% and 6wt% silicon
Diatomaceous earth.
A kind of soil conditioner is prepared by following preparation method:
(1) it takes nitrogenous fertilizer, phosphate fertilizer and potash fertilizer to be mixed by recipe ratio, ether is added, ultrasound uniformly obtains dispersion liquid, by dispersion liquid
Spray drying obtains short grained inner core;
(2) it takes paraffin, polyacrylonitrile fibre powder, naphthenic oil and molecular sieve powder to be mixed by recipe ratio, is stirred and heated to just
Good melting completely, is put into inner core after stirring evenly, wait for fully coating interior release membranes on inner core, be cooled to 40 DEG C;
(3) oxalic acid or ascorbic acid are taken, ether is added, ultrasound uniformly obtains dispersion liquid, dispersion liquid is spray-dried to obtain
Short grained acid grain;The inner core for having coated interior release membranes for being cooled to 40 DEG C is put on the sour grain prepared, sour grain is sticked
Outside interior release membranes;
(4) it takes PP films, Sodium Allyl Sulfonate, calcium oxide and diatomite to be mixed by recipe ratio, ethyl alcohol is added, ultrasound is uniform to be obtained
To dispersion liquid, be sprayed on outside sour grain, air-dry to get.
Embodiment 2:A kind of saline-alkali soil conditioner, difference from example 1 is that:
Interior release membranes, acid releasing layer, outer release membranes thickness be respectively 0.2,0.5 and 0.2mm.
Inner core includes nitrogenous fertilizer, phosphate fertilizer and potash fertilizer, and nitrogenous fertilizer selects calcium ammonium nitrate, phosphate fertilizer that ground phosphate rock, potash fertilizer is selected to select vegetation
Ash.
Interior release membranes are parafilm, the polyacrylonitrile fibre powder containing 12wt% in parafilm, 4wt% naphthenic oil and
The molecular sieve powder of 8wt%.
Ascorbic acid is equipped in acid releasing layer.
Outer release membranes are PP films, the Sodium Allyl Sulfonate containing 3wt% in PP films, the calcium oxide of 2wt% and 5wt% silicon
Diatomaceous earth.
Embodiment 3:A kind of saline-alkali soil conditioner, including inner core, interior release membranes, acid releasing layer and outer release membranes, it is interior
Release membranes are coated on outside inner core, and outer release membranes are coated on outside interior release membranes, and acid releasing layer is located at interior release membranes and outer release membranes
Between.Interior release membranes, acid releasing layer, outer release membranes thickness be respectively 0.5,1.0 and 0.5mm.
Inner core includes nitrogenous fertilizer, phosphate fertilizer and potash fertilizer, and nitrogenous fertilizer selects urea, phosphate fertilizer that calcium magnesium phosphate, potash fertilizer is selected to select plant ash.
Interior release membranes are parafilm, the polyacrylonitrile fibre powder containing 15wt% in parafilm, 6wt% naphthenic oil,
Molecular sieve powder, the polyallylamine hydrochloride of 2wt% and the polyvinyl alcohol of 2wt% of 10wt%.
Oxalic acid is equipped in acid releasing layer.
Outer release membranes are PP films, the Sodium Allyl Sulfonate containing 4wt% in PP films, the calcium oxide of 3wt%, 6wt% silicon
The polyvinyl alcohol of diatomaceous earth, the zeolite powder of 2wt%, the calcium nitrate of 2wt% and 2wt%.
A kind of soil conditioner is prepared by following preparation method:
(1) it takes nitrogenous fertilizer, phosphate fertilizer and potash fertilizer to be mixed by recipe ratio, ether is added, ultrasound uniformly obtains dispersion liquid, by dispersion liquid
Spray drying obtains short grained inner core;
(2) take paraffin, polyacrylonitrile fibre powder, naphthenic oil, molecular sieve powder, polyallylamine hydrochloride and polyvinyl alcohol by with
Side's ratio mixes, and is stirred and heated to just melting completely, inner core is put into after stirring evenly, and waits for fully coating interior sustained release on inner core
Film is cooled to 40 DEG C;
(3) oxalic acid or ascorbic acid are taken, ether is added, ultrasound uniformly obtains dispersion liquid, dispersion liquid is spray-dried to obtain
Short grained acid grain;The inner core for having coated interior release membranes for being cooled to 40 DEG C is put on the sour grain prepared, sour grain is sticked
Outside interior release membranes;
(4) take PP films, Sodium Allyl Sulfonate, calcium oxide, diatomite, zeolite powder, calcium nitrate and polyvinyl alcohol by recipe ratio
Ethyl alcohol is added in mixing, and ultrasound uniformly obtains dispersion liquid, is sprayed on outside sour grain, it is air-dried to get.
Embodiment 4:A kind of saline-alkali soil conditioner, with embodiment 3 the difference is that:
Interior release membranes, acid releasing layer, outer release membranes thickness be respectively 0.2,0.5 and 0.2mm.
Inner core includes nitrogenous fertilizer, phosphate fertilizer and potash fertilizer, and nitrogenous fertilizer selects calcium ammonium nitrate, phosphate fertilizer that ground phosphate rock, potash fertilizer is selected to select vegetation
Ash.
Interior release membranes are parafilm, the polyacrylonitrile fibre powder containing 12wt% in parafilm, 4wt% naphthenic oil,
Molecular sieve powder, the polyallylamine hydrochloride of 1wt% and the polyvinyl alcohol of 1wt% of 8wt%.
Ascorbic acid is equipped in acid releasing layer.
Outer release membranes are PP films, the Sodium Allyl Sulfonate containing 3wt% in PP films, the calcium oxide of 2wt%, 5wt% silicon
The polyvinyl alcohol of diatomaceous earth, the zeolite powder of 1wt%, the calcium nitrate of 1wt% and 1wt%.
A kind of dissolution test of saline-alkali soil conditioner
It is put into test beaker in 27 DEG C of water-baths, 25 DEG C of 2000ml simulated solutions, 500r/ are put into test beaker
It is 25 DEG C that min, which stirs simulated solution and controls the temperature of simulated solution in test process, and a certain amount of sample is added and (controls N, P and K
Content is 200mg, acid content 20g), it is dense respectively at pH, N concentration of 0 day, 7 days, 30 days and 100 days test simulation liquid, P
Degree and K concentration.Parallel test 3 times, results are averaged.
Simulated solution is adjusted by NaCl, NaOH and water comprising simulates light saline solution (salt content 0.25wt%, pH=
8.0), simulation moderate saline solution (salt content 0.50wt%, pH=9.0), simulation geavy salt lye (salt content 0.75wt%, pH=
10.0)。
Sample includes embodiment 1-4, reference substance.Reference substance is the mixture of nitrogenous fertilizer, phosphate fertilizer and potash fertilizer, and nitrogenous fertilizer selects urine
Element, phosphate fertilizer select calcium magnesium phosphate, potash fertilizer to select plant ash.
Test result is as shown in table 1-3.Table 1-3 is shown:
(1) it is directed under the same test condition of same sample,
7 process is faded to using the pH of simulated solution from 8.0/9.0/10.0 as process I, mainly outer release membranes in process I
Permeable amount increases under alkaline condition, and the sour grain in sample is gradually dissolved in simulated solution, primarily serves and adjusts simulated solution pH's
Effect;It is worth noting that, in this process I, do not find that N, P, K concentration are significantly increased, illustrates under alkaline condition
The permeable amount of release membranes is held essentially constant;
Be maintained at 7 process as process II using the pH of simulated solution, process II mainly in release membranes in neutral conditions
Permeable amount increases, and nitrogenous fertilizer, phosphate fertilizer and the potash fertilizer in sample gradually dissolve, and N, P, K concentration gradually increase;
(2) on the dissolution rate of nitrogenous fertilizer, phosphate fertilizer and potash fertilizer, saline solution and simulation geavy salt lye are especially spent in simulations
Under, embodiment 1 and embodiment 2 are faster than embodiment 3 and embodiment 4, and the slow release effect of embodiment 3 and embodiment 4 is better than embodiment 1
With embodiment 2.
Table 1 simulates the test of the dissolution in light saline solution
Table 2 simulates the dissolution test in moderate saline solution
Table 3 simulates the dissolution test in geavy salt lye
Field fertilizer efficiency
Testing site whole year rainfall is about 535.3mm, and (4-10 months) rainfall is about wherein in cotton growing stage
471.2mm.Experimental cultivar is Xiang River cotton No. 2.Light saline and alkaline experimental plot (salt content 0.21wt%, pH=is selected in experimental plot respectively
7.6), the saline and alkaline experimental plot of moderate (salt content 0.45wt%, pH=8.9), geavy salt alkali test field (salt content 0.69wt%, pH=
10.0)。
In, using sample treatment, application sample size is 300kg/hm on experimental plot at the beginning of 4 months2.The density phase each handled
Together, cotton late growth stage investigates yield result.Not apply fertilizer 2 (blank controls) and the red cubic brand of application as a control group
Composite fertilizer's Slow release bulk blend fertilizer 45% as a control group 3.
Test result is as shown in Table 4-6.Table 4-6 is shown:
(1) compared with reference substance 2 and reference substance 3, single basal munure of embodiment 1-4, Single boll weight, yield, which have, obviously to be carried
It is high;
(2) compared with reference substance 2 and reference substance 3, single plant bells of the embodiment 1-4 in high salinity and the high experimental plots pH
Number, Single boll weight, yield are improved, and are suitable for high salinity and high pH.
Field fertilizer efficiency in the light saline and alkaline experimental plot of table 4
Field fertilizer efficiency in the saline and alkaline experimental plot of 5 moderate of table
The field fertilizer efficiency of 6 geavy salt alkali test Tanaka of table
The specific implementation of the invention is not to be limited to these illustrations for the above content, and technology belonging to the present invention is led
For the those of ordinary skill in domain, without departing from the inventive concept of the premise, a number of simple deductions or replacements can also be made,
It all shall be regarded as belonging to present invention scope of patent protection determined by the appended claims.
Claims (6)
1. a kind of saline-alkali soil conditioner, which is characterized in that including inner core, interior release membranes, acid releasing layer and outer release membranes, institute
It states interior release membranes to be coated on outside inner core, the outer release membranes are coated on outside interior release membranes, and the acidity releasing layer is located at interior sustained release
Between film and outer release membranes;
The inner core includes nitrogenous fertilizer, phosphate fertilizer and potash fertilizer;
The interior release membranes are parafilm, and the polyacrylonitrile fibre powder of 12 ~ 15wt%, the ring of 4 ~ 6wt% are contained in the parafilm
The molecular sieve powder of alkane oil and 8 ~ 10wt%;
It is equipped with oxalic acid or ascorbic acid in the acidity releasing layer;
The outer release membranes are PP films, the Sodium Allyl Sulfonate containing 3 ~ 4wt% in the PP films, the calcium oxide of 2 ~ 3wt% and 5 ~
The diatomite of 6wt%.
2. a kind of saline-alkali soil conditioner according to claim 1, which is characterized in that also contain 1 ~ 2wt% in the PP films
Zeolite powder, the calcium nitrate of 1 ~ 2wt% and the polyvinyl alcohol of 1 ~ 2wt%;Also contain the polypropylene amine of 1 ~ 2wt% in the parafilm
The polyvinyl alcohol of hydrochloride and 1 ~ 2wt%.
3. a kind of saline-alkali soil conditioner according to claim 1 or 2, which is characterized in that the interior release membranes, acidity are released
Put layer, the thickness of outer release membranes is respectively 0.2 ~ 0.5,0.5 ~ 1.0 and 0.2 ~ 0.5 mm.
4. a kind of saline-alkali soil conditioner according to claim 1 or 2, which is characterized in that the nitrogenous fertilizer select urea or
Calcium ammonium nitrate, the phosphate fertilizer select calcium magnesium phosphate or ground phosphate rock, the potash fertilizer to select plant ash.
5. a kind of preparation method of soil conditioner, which is characterized in that include the following steps:
(1)It takes nitrogenous fertilizer, phosphate fertilizer and potash fertilizer to be mixed by recipe ratio, ether is added, ultrasound uniformly obtains dispersion liquid, dispersion liquid is sprayed
It is dried to obtain short grained inner core;
(2)It takes paraffin, polyacrylonitrile fibre powder, naphthenic oil and molecular sieve powder to be mixed by recipe ratio, is stirred and heated to just complete
Full-fusing is put into inner core after stirring evenly, and waits for fully coating interior release membranes on inner core, is cooled to 40 DEG C;
(3)Oxalic acid or ascorbic acid are taken, ether is added, ultrasound uniformly obtains dispersion liquid, dispersion liquid is spray-dried to obtain small
The sour grain of grain;The inner core for having coated interior release membranes for being cooled to 40 DEG C is put on the sour grain prepared, sour grain is attached on interior
Outside release membranes;
(4)It takes PP films, Sodium Allyl Sulfonate, calcium oxide and diatomite to be mixed by recipe ratio, ethyl alcohol is added, ultrasound is uniformly divided
Dispersion liquid is sprayed on outside sour grain, air-dry to get.
6. preparation method according to claim 5, includes the following steps:
(1)It takes nitrogenous fertilizer, phosphate fertilizer and potash fertilizer to be mixed by recipe ratio, ether is added, ultrasound uniformly obtains dispersion liquid, dispersion liquid is sprayed
It is dried to obtain short grained inner core;
(2)Take paraffin, polyacrylonitrile fibre powder, naphthenic oil, molecular sieve powder, polyallylamine hydrochloride and polyvinyl alcohol by recipe ratio
It mixes, is stirred and heated to just melting completely, inner core is put into after stirring evenly, wait for fully coating interior release membranes, drop on inner core
Temperature is to 40 DEG C;
(3)Oxalic acid or ascorbic acid are taken, ether is added, ultrasound uniformly obtains dispersion liquid, dispersion liquid is spray-dried to obtain small
The sour grain of grain;The inner core for having coated interior release membranes for being cooled to 40 DEG C is put on the sour grain prepared, sour grain is attached on interior
Outside release membranes;
(4)PP films, Sodium Allyl Sulfonate, calcium oxide, diatomite, zeolite powder, calcium nitrate and polyvinyl alcohol is taken to be mixed by recipe ratio,
Ethyl alcohol is added, ultrasound uniformly obtains dispersion liquid, is sprayed on outside sour grain, it is air-dried to get.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810562044.1A CN108689777A (en) | 2018-06-02 | 2018-06-02 | A kind of saline-alkali soil conditioner and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810562044.1A CN108689777A (en) | 2018-06-02 | 2018-06-02 | A kind of saline-alkali soil conditioner and preparation method thereof |
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| Publication Number | Publication Date |
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| CN108689777A true CN108689777A (en) | 2018-10-23 |
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| CN201810562044.1A Pending CN108689777A (en) | 2018-06-02 | 2018-06-02 | A kind of saline-alkali soil conditioner and preparation method thereof |
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| Country | Link |
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2018
- 2018-06-02 CN CN201810562044.1A patent/CN108689777A/en active Pending
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