CN106631468A - Special slow release fertilizer for Chinese cabbage and preparation method thereof - Google Patents
Special slow release fertilizer for Chinese cabbage and preparation method thereof Download PDFInfo
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- CN106631468A CN106631468A CN201611220779.3A CN201611220779A CN106631468A CN 106631468 A CN106631468 A CN 106631468A CN 201611220779 A CN201611220779 A CN 201611220779A CN 106631468 A CN106631468 A CN 106631468A
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B1/00—Superphosphates, i.e. fertilisers produced by reacting rock or bone phosphates with sulfuric or phosphoric acid in such amounts and concentrations as to yield solid products directly
- C05B1/02—Superphosphates
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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
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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
-
- 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
- C05G5/37—Layered or coated, e.g. dust-preventing coatings layered or coated with a polymer
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Abstract
The invention discloses a special slow release fertilizer for Chinese cabbage and a preparation method thereof. The special slow release fertilizer is prepared from the following raw materials in parts by weight: 12 to 18 parts of potassium nitrate, 10 to 16 parts of ammonium sulfate, 40 to 60 parts of urea, 4 to 10 parts of calcium superphosphate, 16 to 22 parts of potassium dihydrogen phosphate, 6 to 12 parts of an additive, 8 to 14 parts of a reaction auxiliary agent, 20 to 26 parts of modified montmorillonite, 50 to 56 parts of polylactic acid and 50 to 56 parts of polyvinyl alcohol. The special slow release fertilizer for the Chinese cabbage provided by the invention contains a variety of nutrient components, and can meet the needs of the Chinese cabbage for various nutrients; meanwhile, due to the addition of the raw materials like thiosulfuric acid substances, a plant growth regulator and a herbicide in the slow release fertilizer, the slow release fertilizer can effectively solve the problems of soil heavy metal pollution and toxic and harmful substance residue in the process of cultivation of the Chinese cabbage, and can obtain the advantages of improving planting environment, inhibiting weed growth and enhancing the growth vigor of the Chinese cabbage.
Description
Technical field
The present invention relates to fertilizer preparing technical field, and in particular to a kind of Chinese cabbage Special slow release fertilizer and preparation method thereof.
Background technology
Chinese cabbage, biennial herb is high 40-60 centimetre, and normal complete stool has minority seta in adaxial surface of the leaf middle arteries sometimes without hair.It is former
North of China is originated in, is Cruciferae Brassica genus pot-herb, be often referred to Chinese cabbage；Also pakchoi and the cultivation by wild cabbage are included
Training mutation cabbage, i.e. " cabbage " or " cabbage ".South is introduced a fine variety, there is cultivation north and south various places.19th-century incoming day
Originally, European and American countries.Chinese cabbage species is a lot, and the Chinese cabbage in the north has that Shandong Jiangzhou Chinese cabbage, Beijing be bluish white, Tianjin Indian mallow leaf great Bai
Dish, northeast big short Chinese cabbage, Yutian Chinese cabbage, the big burr of Yangcheng, Shanxi etc..Chinese cabbage is with the confession of tender leaf-head, lotus throne leaf or scape
It is edible.Using extensive, cultivated area and consumption figure are occupied first of all kinds of vegetables in China.
Because Chinese cabbage has high edibility and nutritive value, therefore the cultivation technique of Chinese cabbage just occurs in succession, in vain
The control of fertilizer is particularly critical in dish cultivation, because Chinese cabbage is cultivated in soil, after fertilizer is applied for a period of time, except
Sub-fraction can absorb outer by Chinese cabbage, other then can be lost in, and cause substantial amounts of waste, but also can cause the pollution of soil,
With going deep into for Research of Environmental Sciences, people gradually recognize contamination hazard of the heavy metal to soil be it is extremely serious, in order to
Reduce this loss, must be requested that the release rule of the nutrient of fertilizer is coordinated with the Nutrient Absorption of Chinese cabbage, therefore Controlled Release Fertilizer grinds
System becomes more and more.With going deep into for Research of Environmental Sciences, people gradually recognize heavy metal-polluted soil heavy metal in soil
Existing forms can be divided into：Exchangeable species；Carbonate combine state；Iron and manganese oxides combine state；Sulfide and organically combine state；Residue
State etc..Exchangeable species belong to effective and easy utilization absorbed by crops, referred to as using state；Carbonate combine state is referred to and carbon
The heavy metal that hydrochlorate is combined；Ferrimanganic refers to the heavy metal ion combined with ferrimanganic with reference to state, there is very strong combination energy between them
Power；Sulfide and organically combine state refer to the heavy metal combined with sulphur and the heavy metal ion of complex compound are formed with organic matter；It is residual
Slag state is referred to extracts the heavy metal ion existed with phyllosilicate form after aforementioned four component, wherein exchangeable species and has
The biological effectiveness that machine combines state heavy metal is higher, and other biological effectivenesses are low.Therefore exchangeable species how to be reduced and is had
Machine with reference to the biological effectiveness of state heavy metal be process soil in heavy metal key point, existing process heavy metal in soil
Method mainly have：The methods such as curing/stabilizing, chemical reagent extraction, microorganism leaching, burning, phytoremediation.Chemical method,
The shortcoming of bioanalysis, phytoremediation and burning method is：Removing heavy metals are gone not only to need substantial amounts of financial resources, thing from soil
Power, and take this method clearly unpractiaca in the face of soil, and those absorptions are enriched the plant of heavy metal, there is also
And be difficult to further process, and be likely to result in secondary pollution problem.It is this present inventor by substantial amounts of experiment and research, carries
Supply one kind to provide nutrition to Chinese cabbage growth, moreover it is possible to effectively solving nutrient element loss, heavy metal pollution of soil, had
Chinese cabbage Special slow release fertilizer of malicious harmful substance pollution and preparation method thereof.
The content of the invention
To solve above-mentioned technical problem, the invention provides a kind of Chinese cabbage Special slow release fertilizer and preparation method thereof.
The present invention is achieved by the following technical programs：
A kind of Chinese cabbage Special slow release fertilizer, it is made up of following raw material：Potassium nitrate 12-18 parts, ammonium sulfate 10-16
Part, urea 40-60 parts, calcium superphosphate 4-10 parts, potassium dihydrogen phosphate 16-22 parts, additive 6-12 parts, reaction promoter 8-14 parts,
Modified montmorillonite used 20-26 parts, PLA 50-56 parts, polyvinyl alcohol 50-56 parts.
The Chinese cabbage Special slow release fertilizer is made up of following raw material：Potassium nitrate 14-16 parts, ammonium sulfate 12-14 parts, urine
Plain 45-55 parts, calcium superphosphate 6-8 parts, potassium dihydrogen phosphate 18-20 parts, additive 8-10 parts, reaction promoter 10-12 parts, modified illiteracy
De- stone 22-24 parts, PLA 52-54 parts, polyvinyl alcohol 52-54 parts.
The Chinese cabbage Special slow release fertilizer is made up of following raw material：15 parts of potassium nitrate, 13 parts of ammonium sulfate, urea 50
Part, 7 parts of calcium superphosphate, 19 parts of potassium dihydrogen phosphate, 9 parts of additive, 11 parts of reaction promoter, modified montmorillonite used 23 parts, PLA 53
Part, 53 parts of polyvinyl alcohol.
The additive be alginic acid, sugar alcohol, plant growth regulator, herbicide according to etc. form than configuration.
The plant growth regulator be gibberellin, CPPU, 6- benzylaminopurines, brassinosteroid, triacontanol
In one kind.
The drag-line missible oil of the herbicide 48%, 72% all your missible oil, 50% acetochlor ec, 50% Simanex can wet-milling
At least one in agent, 40% Atrazine suspending agent.
The reaction promoter is the one kind in sodium thiosulfate, potassium thiosulfate, ATS (Ammonium thiosulphate).
The modified montmorillonite used preparation method is：
(1) crush：Montmorillonite is obtained into montmorillonite powder with ball mill ball milling into the fine powder of fineness≤0.04mm；
(2) activate：Montmorillonite powder is sent in ultrasonic device, in the case where ultrasonic power is 600-1000w 20-40min is processed,
It is re-fed into calcining the high-temperature calcination 90-120min in tower with 300-600 DEG C, montmorillonite powder is added in absolute ethyl alcohol after cooling,
Centrifugation after ultrasonic disperse 10-18min, repeats ultrasonic disperse, centrifugation 2-3 time, subsequently adds in distilled water, ultrasonic disperse
Centrifugation after 10-15min, repeats ultrasonic disperse, centrifugation 2-3 time；
(3) intercalation：Montmorillonite powder after activation is added water the montmorillonite ore deposit for being adjusted to that mass percent concentration is 20-40%
Slurry, is subsequently added into the intercalator containing amido, and pressure 0.5-0.8MPa, temperature 40-60 DEG C, rotating speed 1000r/ are controlled during reaction
Min, time 80-100min, microwave power is 10-18kw, obtains modified montmorillonite used.
The intercalator is the one kind in ethylenediamine, diethylenetriamine, triethylene tetramine, TEPA.
Present invention also offers the preparation method of above-mentioned Chinese cabbage Special slow release fertilizer, the method is by potassium nitrate, ammonium sulfate, urine
Granulation after element, calcium superphosphate, potassium dihydrogen phosphate, additive, reaction promoter are well mixed obtains particle diameter for 2-5mm, N：P2O5：
The mol ratio of K2O is 1:3:1 composite fertilizer, then the composite fertilizer is obtained into compound with modified montmorillonite used being well mixed, using by
The degradation material obtained after PLA, polyethylene blend and compound are (1-1.2) according to mass ratio：1 ratio is wrapped
Wrap up in and obtain Chinese cabbage Special slow release fertilizer.
The beneficial effects of the present invention is：The present invention first will be obtained composite fertilizer after the blending of each raw material, and control in composite fertilizer
N P and K constituent content and the particle size of composite fertilizer, the gas permeability of fertilizer is improved, again by gathering after mixing with montmorillonite
The degradation material obtained after lactic acid, polyethylene blend carries out wrapping up its degradation cycle and the growth period of Chinese cabbage is close so that system
It is standby go out Controlled Release Fertilizer disclosure satisfy that nutrition needed for Chinese cabbage growth, due to this slow-release fertilizer employ it is modified montmorillonite used, can and fertilizer
Thio sulfide in material produces synergy, i.e., modified montmorillonite used by the absorption of heavy metal micelle, and heavy metal ion is exchanged
Out, content of beary metal in the soil liquid is improved, is reacted with thio sulfide beneficial to heavy metal ion, and thio sulfide
React production precipitation with heavy metal ion, so as to heavy metal ion be fixed, prevent that it passes through leaching and runoff is moved
Move, in addition, valence heavy metal ions are reduced into lower valency by sodium thiosulfate, so as to reduce its toxicity and dissolubility, this Chinese cabbage
Special slow release fertilizer contains multiple nutritional components, can meet needs of the Chinese cabbage to various nutrients, and due to the raw material of this slow-release fertilizer
In add the raw materials such as thiosulfuric acid thing, plant growth regulator, herbicide, this slow-release fertilizer used in Chinese cabbage cultivation is not
Only can effectively solve the problem that heavy metal pollution of soil, poisonous and harmful substance residue problem, moreover it is possible to which playing improves planting environment, suppress miscellaneous
Grass growth, improves the advantage of Chinese cabbage growing way.
Specific embodiment
Technical scheme is further described below in conjunction with specific embodiment, but claimed scope is not
It is confined to described.
Embodiment one
Formula：12 parts of potassium nitrate, 10 parts of ammonium sulfate, 40 parts of urea, 4 parts of calcium superphosphate, 16 parts of potassium dihydrogen phosphate, additive
6 parts, 8 parts of reaction promoter, modified montmorillonite used 20 parts, 50 parts of PLA, 50 parts of polyvinyl alcohol.
Modified montmorillonite used preparation method：
(1) crush：Montmorillonite is obtained into montmorillonite powder with ball mill ball milling into the fine powder of fineness≤0.04mm；
(2) activate：Montmorillonite powder is sent in ultrasonic device, in the case where ultrasonic power is 600w 20min is processed, be re-fed into forging
Burn in tower with 300 DEG C of high-temperature calcination 90min, by montmorillonite powder addition absolute ethyl alcohol after cooling, after ultrasonic disperse 10min from
The heart is separated, and repeats ultrasonic disperse, centrifugation 2 times, is subsequently added in distilled water, centrifugation after ultrasonic disperse 10min, repeats super
Sound dispersion, centrifugation 2 times；
(3) intercalation：Montmorillonite powder after activation is added water the montmorillonite ore pulp for being adjusted to that mass percent concentration is 20%,
The intercalator containing amido is subsequently added into, pressure 0.5MPa, 40 DEG C of temperature, rotating speed 1000r/min, time are controlled during reaction
80min, microwave power is 10kw, obtains modified montmorillonite used.
The preparation method of Chinese cabbage Special slow release fertilizer：By potassium nitrate, ammonium sulfate, urea, calcium superphosphate, potassium dihydrogen phosphate, outer
Plus agent, reaction promoter be well mixed after granulation obtain particle diameter for 2-5mm, N：P2O5：The mol ratio of K2O is 1:3:1 composite fertilizer,
Again the composite fertilizer is obtained into compound with modified montmorillonite used being well mixed, adopting can by what is obtained after PLA, polyethylene blend
Degradable material is 1 according to mass ratio with compound：1 ratio is wrapped up obtain Chinese cabbage Special slow release fertilizer.
Embodiment two
Formula：It is 18 parts of potassium nitrate, 16 parts of ammonium sulfate, 60 parts of urea, 10 parts of calcium superphosphate, 22 parts of potassium dihydrogen phosphate, additional
12 parts of agent, 14 parts of reaction promoter, modified montmorillonite used 26 parts, 56 parts of PLA, 56 parts of polyvinyl alcohol.
Modified montmorillonite used preparation method：
(1) crush：Montmorillonite is obtained into montmorillonite powder with ball mill ball milling into the fine powder of fineness≤0.04mm；
(2) activate：Montmorillonite powder is sent in ultrasonic device, in the case where ultrasonic power is 1000w 40min is processed, be re-fed into
The high-temperature calcination 120min with 600 DEG C in tower is calcined, montmorillonite powder is added in absolute ethyl alcohol after cooling, ultrasonic disperse 18min
Centrifugation afterwards, repeats ultrasonic disperse, centrifugation 3 times, subsequently adds in distilled water, centrifugation after ultrasonic disperse 15min, weight
Multiple ultrasonic disperse, centrifugation 3 times；
(3) intercalation：Montmorillonite powder after activation is added water the montmorillonite ore pulp for being adjusted to that mass percent concentration is 40%,
The intercalator containing amido is subsequently added into, pressure 0.8MPa, temperature 60 C, rotating speed 1000r/min, time are controlled during reaction
100min, microwave power is 18kw, obtains modified montmorillonite used.
The preparation method of Chinese cabbage Special slow release fertilizer：By potassium nitrate, ammonium sulfate, urea, calcium superphosphate, potassium dihydrogen phosphate, outer
Plus agent, reaction promoter be well mixed after granulation obtain particle diameter for 2-5mm, N：P2O5：The mol ratio of K2O is 1:3:1 composite fertilizer,
Again the composite fertilizer is obtained into compound with modified montmorillonite used being well mixed, adopting can by what is obtained after PLA, polyethylene blend
Degradable material is 1.2 according to mass ratio with compound：1 ratio is wrapped up obtain Chinese cabbage Special slow release fertilizer.
Embodiment three
Formula：14 parts of potassium nitrate, 12 parts of ammonium sulfate, 45 parts of urea, 6 parts of calcium superphosphate, 18 parts of potassium dihydrogen phosphate, additive
8 parts, reaction promoter 10- parts, modified montmorillonite used 22 parts, 52 parts of PLA, 52 parts of polyvinyl alcohol.
Modified montmorillonite used preparation method：
(1) crush：Montmorillonite is obtained into montmorillonite powder with ball mill ball milling into the fine powder of fineness≤0.04mm；
(2) activate：Montmorillonite powder is sent in ultrasonic device, in the case where ultrasonic power is 600w 20min is processed, be re-fed into forging
The high-temperature calcination 90min with 300- DEG C in tower is burnt, montmorillonite powder is added in absolute ethyl alcohol, after ultrasonic disperse 10min after cooling
Centrifugation, repeats ultrasonic disperse, centrifugation 2 times, subsequently adds in distilled water, centrifugation after ultrasonic disperse 10min, repeats
Ultrasonic disperse, centrifugation 2 times；
(3) intercalation：Montmorillonite powder after activation is added water the montmorillonite ore pulp for being adjusted to that mass percent concentration is 20%,
The intercalator containing amido is subsequently added into, pressure 0.5MPa, 40 DEG C of temperature, rotating speed 1000r/min, time are controlled during reaction
80min, microwave power is 10kw, obtains modified montmorillonite used.
The preparation method of Chinese cabbage Special slow release fertilizer：By potassium nitrate, ammonium sulfate, urea, calcium superphosphate, potassium dihydrogen phosphate, outer
Plus agent, reaction promoter be well mixed after granulation obtain particle diameter for 2-5mm, N：P2O5：The mol ratio of K2O is 1:3:1 composite fertilizer,
Again the composite fertilizer is obtained into compound with modified montmorillonite used being well mixed, adopting can by what is obtained after PLA, polyethylene blend
Degradable material is 1 according to mass ratio with compound：1 ratio is wrapped up obtain Chinese cabbage Special slow release fertilizer.
Example IV
Formula：16 parts of potassium nitrate, 14 parts of ammonium sulfate, 55 parts of urea, 8 parts of calcium superphosphate, 20 parts of potassium dihydrogen phosphate, additive
10 parts, 12 parts of reaction promoter, modified montmorillonite used 24 parts, 54 parts of PLA, 54 parts of polyvinyl alcohol.
Modified montmorillonite used preparation method：
(1) crush：Montmorillonite is obtained into montmorillonite powder with ball mill ball milling into the fine powder of fineness≤0.04mm；
(2) activate：Montmorillonite powder is sent in ultrasonic device, in the case where ultrasonic power is 1000w 40min is processed, be re-fed into
The high-temperature calcination 120min with 600 DEG C in tower is calcined, montmorillonite powder is added in absolute ethyl alcohol after cooling, ultrasonic disperse 18min
Centrifugation afterwards, repeats ultrasonic disperse, centrifugation 3 times, subsequently adds in distilled water, centrifugation after ultrasonic disperse 15min, weight
Multiple ultrasonic disperse, centrifugation 3 times；
(3) intercalation：Montmorillonite powder after activation is added water the montmorillonite ore pulp for being adjusted to that mass percent concentration is 40%,
The intercalator containing amido is subsequently added into, pressure 0.8MPa, temperature 60 C, rotating speed 1000r/min, time are controlled during reaction
100min, microwave power is 18kw, obtains modified montmorillonite used.
The preparation method of Chinese cabbage Special slow release fertilizer：By potassium nitrate, ammonium sulfate, urea, calcium superphosphate, potassium dihydrogen phosphate, outer
Plus agent, reaction promoter be well mixed after granulation obtain particle diameter for 2-5mm, N：P2O5：The mol ratio of K2O is 1:3:1 composite fertilizer,
Again the composite fertilizer is obtained into compound with modified montmorillonite used being well mixed, adopting can by what is obtained after PLA, polyethylene blend
Degradable material is 1.2 according to mass ratio with compound：1 ratio is wrapped up obtain Chinese cabbage Special slow release fertilizer.
Embodiment five
Formula：15 parts of potassium nitrate, 13 parts of ammonium sulfate, 50 parts of urea, 7 parts of calcium superphosphate, 19 parts of potassium dihydrogen phosphate, additive
9 parts, 11 parts of reaction promoter, modified montmorillonite used 23 parts, 53 parts of PLA, 53 parts of polyvinyl alcohol.
Modified montmorillonite used preparation method：
(1) crush：Montmorillonite is obtained into montmorillonite powder with ball mill ball milling into the fine powder of fineness≤0.04mm；
(2) activate：Montmorillonite powder is sent in ultrasonic device, in the case where ultrasonic power is 800w 30min is processed, be re-fed into forging
The high-temperature calcination 105min with 450 DEG C in tower is burnt, montmorillonite powder is added in absolute ethyl alcohol, after ultrasonic disperse 14min after cooling
Centrifugation, repeats ultrasonic disperse, centrifugation 2 times, subsequently adds in distilled water, centrifugation after ultrasonic disperse 12.5min, weight
Multiple ultrasonic disperse, centrifugation 3 times；
(3) intercalation：Montmorillonite powder after activation is added water the montmorillonite ore pulp for being adjusted to that mass percent concentration is 30%,
The intercalator containing amido is subsequently added into, pressure 0.65MPa, temperature 50 C, rotating speed 1000r/min, time are controlled during reaction
90min, microwave power is 14kw, obtains modified montmorillonite used.
The preparation method of Chinese cabbage Special slow release fertilizer：By potassium nitrate, ammonium sulfate, urea, calcium superphosphate, potassium dihydrogen phosphate, outer
Plus agent, reaction promoter be well mixed after granulation obtain particle diameter for 2-5mm, N：P2O5：The mol ratio of K2O is 1:3:1 composite fertilizer,
Again the composite fertilizer is obtained into compound with modified montmorillonite used being well mixed, adopting can by what is obtained after PLA, polyethylene blend
Degradable material is 1.1 according to mass ratio with compound：1 ratio is wrapped up obtain Chinese cabbage Special slow release fertilizer.
Embodiment six
Formula：It is 12 parts of potassium nitrate, 16 parts of ammonium sulfate, 40 parts of urea, 10 parts of calcium superphosphate, 16 parts of potassium dihydrogen phosphate, additional
12 parts of agent, 8 parts of reaction promoter, modified montmorillonite used 26 parts, 50 parts of PLA, 56 parts of polyvinyl alcohol.
Modified montmorillonite used preparation method：
(1) crush：Montmorillonite is obtained into montmorillonite powder with ball mill ball milling into the fine powder of fineness≤0.04mm；
(2) activate：Montmorillonite powder is sent in ultrasonic device, in the case where ultrasonic power is 600w 20min is processed, be re-fed into forging
Burn in tower with 300 DEG C of high-temperature calcination 90min, by montmorillonite powder addition absolute ethyl alcohol after cooling, after ultrasonic disperse 10min from
The heart is separated, and repeats ultrasonic disperse, centrifugation 2 times, is subsequently added in distilled water, centrifugation after ultrasonic disperse 10min, repeats super
Sound dispersion, centrifugation 2 times；
(3) intercalation：Montmorillonite powder after activation is added water the montmorillonite ore pulp for being adjusted to that mass percent concentration is 20%,
The intercalator containing amido is subsequently added into, pressure 0.5MPa, 40 DEG C of temperature, rotating speed 1000r/min, time are controlled during reaction
80min, microwave power is 10kw, obtains modified montmorillonite used.
The preparation method of Chinese cabbage Special slow release fertilizer：By potassium nitrate, ammonium sulfate, urea, calcium superphosphate, potassium dihydrogen phosphate, outer
Plus agent, reaction promoter be well mixed after granulation obtain particle diameter for 2-5mm, N：P2O5：The mol ratio of K2O is 1:3:1 composite fertilizer,
Again the composite fertilizer is obtained into compound with modified montmorillonite used being well mixed, adopting can by what is obtained after PLA, polyethylene blend
Degradable material is 1 according to mass ratio with compound：1 ratio is wrapped up obtain Chinese cabbage Special slow release fertilizer.
Embodiment seven
Formula：18 parts of potassium nitrate, 10 parts of ammonium sulfate, 60 parts of urea, 4 parts of calcium superphosphate, 22 parts of potassium dihydrogen phosphate, additive
6 parts, 14 parts of reaction promoter, modified montmorillonite used 20 parts, 56 parts of PLA, 50 parts of polyvinyl alcohol.
Modified montmorillonite used preparation method：
(1) crush：Montmorillonite is obtained into montmorillonite powder with ball mill ball milling into the fine powder of fineness≤0.04mm；
(2) activate：Montmorillonite powder is sent in ultrasonic device, in the case where ultrasonic power is 1000w 40min is processed, be re-fed into
The high-temperature calcination 120min with 600 DEG C in tower is calcined, montmorillonite powder is added in absolute ethyl alcohol after cooling, ultrasonic disperse 18min
Centrifugation afterwards, repeats ultrasonic disperse, centrifugation 3 times, subsequently adds in distilled water, centrifugation after ultrasonic disperse 15min, weight
Multiple ultrasonic disperse, centrifugation 3 times；
(3) intercalation：Montmorillonite powder after activation is added water the montmorillonite ore pulp for being adjusted to that mass percent concentration is 40%,
The intercalator containing amido is subsequently added into, pressure 0.8MPa, temperature 60 C, rotating speed 1000r/min, time are controlled during reaction
100min, microwave power is 18kw, obtains modified montmorillonite used.
The preparation method of Chinese cabbage Special slow release fertilizer：By potassium nitrate, ammonium sulfate, urea, calcium superphosphate, potassium dihydrogen phosphate, outer
Plus agent, reaction promoter be well mixed after granulation obtain particle diameter for 2-5mm, N：P2O5：The mol ratio of K2O is 1:3:1 composite fertilizer,
Again the composite fertilizer is obtained into compound with modified montmorillonite used being well mixed, adopting can by what is obtained after PLA, polyethylene blend
Degradable material is 1.2 according to mass ratio with compound：1 ratio is wrapped up obtain Chinese cabbage Special slow release fertilizer.
Embodiment eight
Formula：14 parts of potassium nitrate, 14 parts of ammonium sulfate, 45 parts of urea, 8 parts of calcium superphosphate, 18 parts of potassium dihydrogen phosphate, additive
10 parts, 10 parts of reaction promoter, modified montmorillonite used 24 parts, 52 parts of PLA, 54 parts of polyvinyl alcohol.
Modified montmorillonite used preparation method：
(1) crush：Montmorillonite is obtained into montmorillonite powder with ball mill ball milling into the fine powder of fineness≤0.04mm；
(2) activate：Montmorillonite powder is sent in ultrasonic device, in the case where ultrasonic power is 600w 20min is processed, be re-fed into forging
Burn in tower with 300 DEG C of high-temperature calcination 90min, by montmorillonite powder addition absolute ethyl alcohol after cooling, after ultrasonic disperse 10min from
The heart is separated, and repeats ultrasonic disperse, centrifugation 2 times, is subsequently added in distilled water, centrifugation after ultrasonic disperse 10min, repeats super
Sound dispersion, centrifugation 2 times；
(3) intercalation：Montmorillonite powder after activation is added water the montmorillonite ore pulp for being adjusted to that mass percent concentration is 20%,
The intercalator containing amido is subsequently added into, pressure 0.5MPa, 40 DEG C of temperature, rotating speed 1000r/min, time are controlled during reaction
80min, microwave power is 10kw, obtains modified montmorillonite used.
The preparation method of Chinese cabbage Special slow release fertilizer：By potassium nitrate, ammonium sulfate, urea, calcium superphosphate, potassium dihydrogen phosphate, outer
Plus agent, reaction promoter be well mixed after granulation obtain particle diameter for 2-5mm, N：P2O5：The mol ratio of K2O is 1:3:1 composite fertilizer,
Again the composite fertilizer is obtained into compound with modified montmorillonite used being well mixed, adopting can by what is obtained after PLA, polyethylene blend
Degradable material is 1 according to mass ratio with compound：1 ratio is wrapped up obtain Chinese cabbage Special slow release fertilizer.
Embodiment nine
Formula：16 parts of potassium nitrate, 12 parts of ammonium sulfate, 55 parts of urea, 6 parts of calcium superphosphate, 20 parts of potassium dihydrogen phosphate, additive
8 parts, 12 parts of reaction promoter, modified montmorillonite used 22 parts, 54 parts of PLA, 52 parts of polyvinyl alcohol.
Modified montmorillonite used preparation method：
(1) crush：Montmorillonite is obtained into montmorillonite powder with ball mill ball milling into the fine powder of fineness≤0.04mm；
(2) activate：Montmorillonite powder is sent in ultrasonic device, in the case where ultrasonic power is 1000w 40min is processed, be re-fed into
The high-temperature calcination 120min with 600 DEG C in tower is calcined, montmorillonite powder is added in absolute ethyl alcohol after cooling, ultrasonic disperse 18min
Centrifugation afterwards, repeats ultrasonic disperse, centrifugation 3 times, subsequently adds in distilled water, centrifugation after ultrasonic disperse 15min, weight
Multiple ultrasonic disperse, centrifugation 3 times；
(3) intercalation：Montmorillonite powder after activation is added water the montmorillonite ore pulp for being adjusted to that mass percent concentration is 40%,
The intercalator containing amido is subsequently added into, pressure 0.8MPa, temperature 60 C, rotating speed 1000r/min, time are controlled during reaction
100min, microwave power is 18kw, obtains modified montmorillonite used.
The preparation method of Chinese cabbage Special slow release fertilizer：By potassium nitrate, ammonium sulfate, urea, calcium superphosphate, potassium dihydrogen phosphate, outer
Plus agent, reaction promoter be well mixed after granulation obtain particle diameter for 2-5mm, N：P2O5：The mol ratio of K2O is 1:3:1 composite fertilizer,
Again the composite fertilizer is obtained into compound with modified montmorillonite used being well mixed, adopting can by what is obtained after PLA, polyethylene blend
Degradable material is 1.2 according to mass ratio with compound：1 ratio is wrapped up obtain Chinese cabbage Special slow release fertilizer.
With reference to specific experiment example, the present invention is described further：
Experimental example 1
This slow-release fertilizer field demonstration test, experimental field ground is in Guizhou, has a moderate climate, with heavy rainfall, using every mu of field
Label is tested, and 10 mu of fields, the slow-release fertilizer prepared using conventional fertilizer application and conventional fertilizer application+the present embodiment 1-9 are selected altogether
Chinese cabbage cultivation experiments are carried out, experimental result is as shown in table 1：
The slow-release fertilizer field demonstration test of table 1
| Project | Theoretical per mu yield (kilogram) | Actual per mu yield (kilogram) |
| Conventional fertilizer application | 3000-4000 | 3921 |
| Conventional fertilizer application+embodiment one | 3300-4200 | 4567 |
| Conventional fertilizer application+embodiment two | 3300-4200 | 4698 |
| Conventional fertilizer application+embodiment three | 3300-4200 | 4617 |
| Conventional fertilizer application+example IV | 3300-4200 | 4356 |
| Conventional fertilizer application+embodiment five | 3300-4200 | 4563 |
| Conventional fertilizer application+embodiment six | 3300-4200 | 4432 |
| Conventional fertilizer application+embodiment seven | 3300-4200 | 4378 |
| Conventional fertilizer application+embodiment eight | 3300-4200 | 4656 |
| Conventional fertilizer application+embodiment nine | 3300-4200 | 4657 |
The plantation of Chinese cabbage its yield is carried out by the way of conventional fertilizer application as seen from the above in theoretical value, and adopts normal
The rule slow-release fertilizers prepared of fertilising+the present embodiment 1-9 carry out the plantation of Chinese cabbage its yield and are not only above theoretical value but also much
It is using conventional fertilizer application higher than independent, therefore the plantation for carrying out Chinese cabbage using the present invention is that have higher effect of increasing production.
Experimental example 2
Heavy metal-polluted soil process experiment：
Surveyed as carrier addition exogenous heavy metal pollutant with the free of contamination cinnamon soil in Guizhou Province and contained at its soil depth 5-20cm
Pb100mg/kg, Cd6mg/kg, Cr900mg/kg, Cu980mg/kg, using the soil as experiment soil, by the embodiment of the present invention
In the slow-release fertilizer prepared throw in experiment soil, heavy metal concentration inspection at soil soil depth 5-20cm is carried out after 15 days
Survey, its testing result is as shown in table 2：
The heavy metal-polluted soil of table 2 processes experimental result
From the foregoing, it will be observed that being thrown in experiment soil after 15 days using the slow-release fertilizer prepared in the embodiment of the present invention, soil
Content of beary metal at 5-15cm is significantly reduced, and illustrates that the thio sulfide contained in this slow-release fertilizer occurs with heavy metal ion
Reaction production precipitation, so as to heavy metal ion be fixed, prevents it from passing through leaching and footpath stream migration, in addition in this slow-release fertilizer
Thio sulfide valence heavy metal ions can also be reduced into lower valency, effectively reduce its toxicity and dissolubility.
Claims (9)
1. a kind of Chinese cabbage Special slow release fertilizer, it is characterised in that：It is made up of following raw material：Potassium nitrate 12-18 parts, sulfuric acid
Ammonium 10-16 parts, urea 40-60 parts, calcium superphosphate 4-10 parts, potassium dihydrogen phosphate 16-22 parts, additive 6-12 parts, reaction promoter
8-14 parts, modified montmorillonite used 20-26 parts, PLA 50-56 parts, polyvinyl alcohol 50-56 parts.
2. Chinese cabbage Special slow release fertilizer according to claim 1, it is characterised in that：The Chinese cabbage Special slow release fertilizer is by following heavy
Amount part raw material is made：Potassium nitrate 14-16 parts, ammonium sulfate 12-14 parts, urea 45-55 parts, calcium superphosphate 6-8 parts, potassium dihydrogen phosphate
18-20 parts, additive 8-10 parts, reaction promoter 10-12 parts, modified montmorillonite used 22-24 parts, PLA 52-54 parts, polyvinyl alcohol
52-54 parts.
3. Chinese cabbage Special slow release fertilizer according to claim 1, it is characterised in that：The Chinese cabbage Special slow release fertilizer is by following heavy
Amount part raw material is made：15 parts of potassium nitrate, 13 parts of ammonium sulfate, 50 parts of urea, 7 parts of calcium superphosphate, 19 parts of potassium dihydrogen phosphate, additive
9 parts, 11 parts of reaction promoter, modified montmorillonite used 23 parts, 53 parts of PLA, 53 parts of polyvinyl alcohol.
4. Chinese cabbage Special slow release fertilizer according to claim 1, it is characterised in that：The additive is alginic acid, sugar alcohol, plant
Thing growth regulator, herbicide according to etc. form than configuration.
5. Chinese cabbage Special slow release fertilizer according to claim 4, it is characterised in that：The plant growth regulator is red mould
Element, CPPU, 6- benzylaminopurines, brassinosteroid, the one kind in triacontanol.
6. Chinese cabbage Special slow release fertilizer according to claim 4, it is characterised in that：The drag-line missible oil of the herbicide 48%,
72% all in your missible oil, 50% acetochlor ec, 50% Simanex wettable powder, 40% Atrazine suspending agent at least one
Kind.
7. Chinese cabbage Special slow release fertilizer according to claim 1, it is characterised in that：The reaction promoter be sodium thiosulfate,
One kind in potassium thiosulfate, ATS (Ammonium thiosulphate).
8. according to the arbitrary described Chinese cabbage Special slow release fertilizer of claim 1-3, it is characterised in that：The modified montmorillonite used preparation
Method is：
(1) crush：Montmorillonite is obtained into montmorillonite powder with ball mill ball milling into the fine powder of fineness≤0.04mm；
(2) activate：Montmorillonite powder is sent in ultrasonic device, in the case where ultrasonic power is 600-1000w 20-40min is processed, then send
Enter and calcine the high-temperature calcination 90-120min that 300-600 DEG C is used in tower, montmorillonite powder is added in absolute ethyl alcohol after cooling, ultrasound
Centrifugation after dispersion 10-18min, repeats ultrasonic disperse, centrifugation 2-3 time, subsequently adds in distilled water, ultrasonic disperse 10-
Centrifugation after 15min, repeats ultrasonic disperse, centrifugation 2-3 time；
(3) intercalation：Montmorillonite powder after activation is added water the montmorillonite ore pulp for being adjusted to that mass percent concentration is 20-40%,
The intercalator containing amido is subsequently added into, control pressure 0.5-0.8MPa during reaction, temperature 40-60 DEG C, rotating speed 1000r/min,
Time 80-100min, microwave power is 10-18kw, obtains modified montmorillonite used.
9. Chinese cabbage Special slow release fertilizer according to claim 8, it is characterised in that：The intercalator is ethylenediamine, divinyl
One kind in triamine, triethylene tetramine, TEPA.A kind of Chinese cabbage Special slow release fertilizer as described in claim 1-3 is arbitrary
Preparation method, it is characterised in that：The method is by potassium nitrate, ammonium sulfate, urea, calcium superphosphate, potassium dihydrogen phosphate, additional
Granulation after agent, reaction promoter are well mixed obtains particle diameter for 2-5mm, N：P2O5：The mol ratio of K2O is 1:3:1 composite fertilizer, then
The composite fertilizer is obtained into compound with modified montmorillonite used being well mixed, using by dropping for obtaining after PLA, polyethylene blend
Solution material is (1-1.2) according to mass ratio with compound：1 ratio is wrapped up obtain Chinese cabbage Special slow release fertilizer.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110050649A (en) * | 2019-03-19 | 2019-07-26 | 广东省农业科学院农业资源与环境研究所 | A kind of pakchoi high yield dense planting and fertilizing method |
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Application publication date: 20170510 |