CN110357703A - A kind of Slow-release organic fertilizer and preparation method thereof - Google Patents
A kind of Slow-release organic fertilizer and preparation method thereof Download PDFInfo
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- CN110357703A CN110357703A CN201910508754.0A CN201910508754A CN110357703A CN 110357703 A CN110357703 A CN 110357703A CN 201910508754 A CN201910508754 A CN 201910508754A CN 110357703 A CN110357703 A CN 110357703A
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F3/00—Fertilisers from human or animal excrements, e.g. manure
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- 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
- 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
-
- 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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- 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
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/54—Improvements relating to the production of bulk chemicals using solvents, e.g. supercritical solvents or ionic liquids
Abstract
The invention discloses a kind of preparation method of Slow-release organic fertilizer, S1: sodium alginate, organobentonite, PEG600, sodium citrate and deionized water are uniformly mixed, mixed solution is obtained；S2: it under the action of supercritical carbon dioxide, is uniformly mixed, forms organic fertilizer lotion；S3: organic fertilizer lotion is sprayed from nozzle and is precipitated, the organic fertilizer particle of microcapsule coated is obtained；S4: being placed in ice bath, and bioactive agent solution is added, and ultrasonic wave added mechanical stirring is mixed, and obtains Slow-release organic fertilizer intermediate；S5: cellulose, PEG600, ethyl alcohol and deionized water will be taken to be uniformly mixed and be configured to coating solution, and be sprayed at Slow-release organic fertilizer midbody particle surface, obtain the Slow-release organic fertilizer.The Slow-release organic fertilizer that the present invention is prepared, organic fertilizer grain diameter and bioactivator are evenly distributed, and the collaboration slow releasing function of the two in the soil is obvious, i.e. conditioned soil property improvement, also improvement crop quality.
Description
Technical field
The present invention relates to the technical fields of organic fertilizer more particularly to a kind of Slow-release organic fertilizer and preparation method thereof.
Background technique
All referred to as organic fertilizer using organic substance (compound containing carbon) as fertilizer.The original of organic fertilizer
From a wealth of sources, including trade waste, agricultural wastes, excrement of animals, house refuse, municipal sludge etc. are expected, by production method
Difference, and compost can be divided into, made compost, biogas manure, sludge and refuse, natural mineral matter fertilizer etc..
Rich in nutriment needed for organic substance and plant growth, fully and rationally using organic fertilizer can increase organic fertilizer
The validity for adding crop yield, culture fertility, improving quality of agricultural product, improving soil nutrient.But it is existing currently on the market
Various organic fertilizer, production and in use, the nutritional ingredient in organic fertilizer can effectively play getting fat effect, but due to use
Traditional preparation process, the organic fertilizer homogeneity being prepared is poor, is easy to appear local agglomeration, organic fertilizer is to soil
The action and efficacy of earth and crop is different, and the crop quality for eventually leading to cultivation differs greatly, and maximum warp can not be brought to peasant household
Ji value.
Therefore, need a kind of Slow-release organic fertilizer, can be permanently effective act on soil, conditioned soil property improvement improves and makees
Article matter realizes the maximization of crop economy value.
Summary of the invention
In place of the above the deficiencies in the prior art, the technical problem to be solved in the present invention is to be directed to Slow-release organic fertilizer
Its particle is easy to reunite failure, the problems such as efficacy exertion is bad, provides a kind of Slow-release organic fertilizer and preparation method thereof, makes organic
Fertiliser granulates partial size and bioactivator are evenly distributed, and the collaboration slow releasing function of the two in the soil is obvious, and efficacy exertion is consistent,
Can long duration ground conditioned soil property improvement, and improve crop quality, realize the maximization of crop economy value.
To achieve the above objectives, the technical solution adopted by the present invention are as follows:
A kind of preparation method of Slow-release organic fertilizer, the preparation method comprises the following steps:
S1: by sodium alginate, organobentonite, PEG600, sodium citrate and deionized water, in 40~60 DEG C of temperature conditions
Under be uniformly mixed, obtain mixed solution；
S2: the mixed solution and organic fertilizer are placed in autoclave, are passed through carbon dioxide, and pressurize be warming up to it is overcritical
State, the mixed solution are uniformly mixed under the action of supercritical carbon dioxide, form organic fertilizer lotion；
S3: reducing the export operation pressure of autoclave, and the organic fertilizer lotion that step S2 is obtained is with overcritical titanium dioxide
Carbon is sprayed from outlet nozzle together to be precipitated, and the organic fertilizer particle of microcapsule coated is obtained；
S4: organic fertilizer particle is placed in ice bath, and addition is equivalent to 1~12wt% of the organic fertilizer particle gross mass
Bioactive agent solution, ultrasonic wave added mechanical stirring mixed, taken out after freeze-drying, obtained among Slow-release organic fertilizer
Body；
S5: according to parts by weight, weigh 10~20 parts of celluloses, 0.5~3.5 part of PEG6000,15~30 parts of ethyl alcohol and
100 parts of deionized waters, be uniformly mixed be configured to coating solution, by the coating solution by high-pressure spray gun uniformly be sprayed at sustained release it is organic
Fertilizer midbody particle surface, is dried to obtain the Slow-release organic fertilizer.
The present invention is loaded by bentonite, and effective bioactivator ingredient is made to be carried on having for microcapsule coated
Machine fertiliser granulates surface and inside had not only saved the dosage of bioactivator but also had improved the distributional pattern of bioactivator, increased
The touch opportunity of big itself and soil is conducive to synergistic effect and the sustained release effect for enhancing organic fertilizer and bioactivator.
By the present invention in that realizing sodium alginate and organobentonite in organic fertilizer with advanced supercritical technology
Layer cladding, is furthermore achieved the uniform cladding of particle, alleviates the reunion tendency being easy to appear in conventional means, so as to improve
The uniformity of microcapsules makes organic fertilizer have sustained release performance more outstanding, while also having existing overcritical cladding side
The general advantage of method.
The present invention passes through ultrasonic wave added by mixing the organic fertilizer of microcapsule coated with bioactivator in ice bath
Churned mechanically mode makes bioactivator equably be supported on the organic fertilizer particle surface of microcapsule coated, further
The external sheath of organic fertilizer is realized on ground by the coating solution of preparation；By the collaboration slow releasing function of inside and outside two layers of clad, make
The sustained release of organic fertilizer and bioactivator continues to act in soil longer, can not only provide nutrient needed for plant growth,
Soil is improved, can also improve crop quality, improves crop yield, promotes high crop yield stable yields, preservation of fertility, while can
Utilization rate of fertilizer is improved, production cost is reduced.
Further, in the step S1, the sodium alginate, organobentonite, PEG600, sodium citrate and go from
The mass ratio of sub- water is 30~50:10~15:3~8:1~7:50~100.
Further, in the step S2, the raw material of the organic fertilizer is by agricultural wastes, excrement of animals, river
Mud composition, the organic fertilizer are formed by aerobic composting process fermentation maturity.
Further, in the step S2, the temperature of the supercriticality is 38~42 DEG C, pressure be 8~
10MPa。
Further, in the step S2, the organic fertilizer additional amount is equivalent to the 5 of the mixed solution gross mass
~10%.
Further, in the step S3, the organic fertilizer grain diameter is 0.5~3mm.
Further, in the step S4, the bioactive agent solution is 1~5:4~15:100 by mass ratio
Humic acid, bioactive enzyme and deionized water composition.The bioactive enzyme is azotase, phosphorus decomposing enzyme, potassium decomposing enzyme, fosterage of plants
At least one of enzyme, heavy metal adsorption enzyme, diseases prevention enzyme；Further, the bioactive enzyme is a kind of abiotic active matter
Matter, is not produced, time, transport, storage, environment etc. restrict, and the beneficial microbe in soil is activated after being manured into soil, it is ensured that
The fertilizer efficiency of biological organic fertilizer.
Further, in the step S4, the temperature of the ice bath is 0~5 DEG C, ultrasonic wave function in the ultrasound procedure
Rate is 100~200W, and the churned mechanically mixing speed is 500~800rpm.
Further, in the step S5, the coating solution is sprayed at Slow-release organic fertilizer midbody particle surface, makes
Its particle surface weight gain 5~10%.
Accordingly, a kind of Slow-release organic fertilizer that the preparation method using such as above-mentioned Slow-release organic fertilizer is prepared.
Beneficial effects of the present invention:
The present invention prepares having based on internal layer sodium alginate and organobentonite covering material by supercritical fluid technique
Machine fertilizer, the organic fertilizer particle size distribution not only obtained is narrow, but also sodium alginate and the organobentonite distribution coated is equal
It is even, the reunion tendency being easy to appear in conventional means is alleviated, so as to improve the uniformity of microcapsules, there is organic fertilizer
Sustained release performance more outstanding.
For internal layer of the present invention using sodium alginate and organobentonite collaboration as cladding material of main part, outer layer utilizes cellulose
As covering material, by the combination of inside and outside double-layer sustained release material, a greater degree of organic fertilizer and the bioactivator of guaranteeing
Slow releasing function promotes the improvement of soil soil property by the synergistic effect of the two, and obtains the crops quality of grown on soil
It improves.
The organic fertilizer that the present invention is prepared, convenient transportation storage is environmental-friendly, and soil improvement and crop quality improve
Effect is obvious.
Specific embodiment
It is described below for disclosing the present invention so that those skilled in the art can be realized the present invention.It is excellent in being described below
Embodiment is selected to be only used as illustrating, it may occur to persons skilled in the art that other obvious modifications.
Embodiment 1
A kind of preparation method of Slow-release organic fertilizer, the preparation method comprises the following steps:
S1: by mass ratio be the sodium alginate of 40:12:5:4:70, organobentonite, PEG600, sodium citrate and go from
Sub- water is uniformly mixed under the conditions of 40 DEG C of temperature, obtains mixed solution；
S2: the mixed solution and organic fertilizer are placed in autoclave, and the organic fertilizer additional amount is equivalent to described mixed
The 8.6% of solution gross mass is closed, is passed through carbon dioxide, and pressurize and be warming up to supercriticality, the temperature of the supercriticality
For 38 DEG C, pressure 8MPa, the mixed solution is uniformly mixed under the action of supercritical carbon dioxide, is formed organic
Fertilizer lotion；
S3: reducing the export operation pressure of autoclave, and the organic fertilizer lotion that step S2 is obtained is with overcritical titanium dioxide
Carbon is sprayed from outlet nozzle together to be precipitated, and obtains the organic fertilizer particle of microcapsule coated, the organic fertilizer grain diameter is
1.5mm；
S4: organic fertilizer particle being placed in the ice bath that temperature is 2 DEG C, and addition is equivalent to the total matter of organic fertilizer particle
The bioactive agent solution of 6wt% is measured, ultrasonic wave added mechanical stirring is mixed, and setting ultrasonic power is 100W, and machinery stirs
The mixing speed mixed is 500rpm, takes out after freeze-drying, obtains Slow-release organic fertilizer intermediate；The bioactive agent solution
It is made of humic acid, bioactive enzyme and deionized water that mass ratio is 3:10:100；The bioactive enzyme is consolidated by 3 parts by weight
Nitrogen enzyme, 1.5 parts by weight phosphorus decomposing enzymes, 2 parts by weight potassium decomposing enzymes, 2 parts by weight heavy metal adsorption enzymes and 1.5 parts by weight diseases prevention enzymes composition；
S5: according to parts by weight, weighing 15 parts of celluloses, 2 parts of PEG6000,25 parts of ethyl alcohol and 100 parts of deionized waters, mixes
Conjunction is uniformly configured to coating solution, and the coating solution is uniformly sprayed at Slow-release organic fertilizer midbody particle table by high-pressure spray gun
Face is dried to obtain the Slow-release organic fertilizer after making its particle surface weight gain 8%.
In the step S2, the raw material of the organic fertilizer is made of agricultural wastes, excrement of animals, riverway sludge,
The organic fertilizer is formed by aerobic composting process fermentation maturity, by the aerobic composting process of existing maturation, by agriculture waste
Object, excrement of animals, riverway sludge are 20:30:25 by weight, in temperature 60 C with top fermentation 7 days, need to overturn in fermentation process
Three times, the organic fertilizer is obtained after carrying out abundant fermentation maturity.
Embodiment 2
A kind of preparation method of Slow-release organic fertilizer, the preparation method comprises the following steps:
S1: by mass ratio be the sodium alginate of 30:10:3:1:50, organobentonite, PEG600, sodium citrate and go from
Sub- water is uniformly mixed under the conditions of 50 DEG C of temperature, obtains mixed solution；
S2: the mixed solution and organic fertilizer are placed in autoclave, and the organic fertilizer additional amount is equivalent to described mixed
The 5% of solution gross mass is closed, is passed through carbon dioxide, and pressurize and be warming up to supercriticality, the temperature of the supercriticality is
40 DEG C, pressure 8MPa, the mixed solution are uniformly mixed under the action of supercritical carbon dioxide, form organic fertilizer
Expect lotion；
S3: reducing the export operation pressure of autoclave, and the organic fertilizer lotion that step S2 is obtained is with overcritical titanium dioxide
Carbon is sprayed from outlet nozzle together to be precipitated, and obtains the organic fertilizer particle of microcapsule coated, the organic fertilizer grain diameter is
1mm；
S4: organic fertilizer particle being placed in the ice bath that temperature is 0~5 DEG C, and addition is equivalent to the organic fertilizer particle
The bioactive agent solution of gross mass 3wt%, ultrasonic wave added mechanical stirring are mixed, and setting ultrasonic power is 150W, machine
The mixing speed of tool stirring is 600rpm, takes out after freeze-drying, obtains Slow-release organic fertilizer intermediate；The bioactivator
Solution is made of humic acid, bioactive enzyme and the deionized water that mass ratio is 2:6:100；The bioactive enzyme is by 2 weight
Part azotase, 1.5 parts by weight phosphorus decomposing enzymes, 2 parts by weight potassium decomposing enzymes, 2.5 parts by weight heavy metal adsorption enzymes and 2 parts by weight diseases prevention enzyme groups
At；
S5: according to parts by weight, weighing 10 parts of celluloses, 0.5 part of PEG6000,15 parts of ethyl alcohol and 100 parts of deionized waters,
It is uniformly mixed and is configured to coating solution, the coating solution is uniformly sprayed at Slow-release organic fertilizer midbody particle by high-pressure spray gun
Surface is dried to obtain the Slow-release organic fertilizer after making its particle surface weight gain 5%.
In the step S2, the raw material of the organic fertilizer is made of agricultural wastes, excrement of animals, riverway sludge,
The organic fertilizer is formed by aerobic composting process fermentation maturity, by the aerobic composting process of existing maturation, by agriculture waste
Object, excrement of animals, riverway sludge are 25:40:35 by weight, in temperature 60 C with top fermentation 8 days, need to overturn in fermentation process
Three times, the organic fertilizer is obtained after carrying out abundant fermentation maturity.
Embodiment 3
A kind of preparation method of Slow-release organic fertilizer, the preparation method comprises the following steps:
S1: by mass ratio be the sodium alginate of 50:15:8:7:100, organobentonite, PEG600, sodium citrate and go from
Sub- water is uniformly mixed under the conditions of 60 DEG C of temperature, obtains mixed solution；
S2: the mixed solution and organic fertilizer are placed in autoclave, and the organic fertilizer additional amount is equivalent to described mixed
The 10% of solution gross mass is closed, is passed through carbon dioxide, and pressurize and be warming up to supercriticality, the temperature of the supercriticality is
42 DEG C, pressure 8.5MPa, the mixed solution are uniformly mixed under the action of supercritical carbon dioxide, are formed organic
Fertilizer lotion；
S3: reducing the export operation pressure of autoclave, and the organic fertilizer lotion that step S2 is obtained is with overcritical titanium dioxide
Carbon is sprayed from outlet nozzle together to be precipitated, and obtains the organic fertilizer particle of microcapsule coated, the organic fertilizer grain diameter is
2mm；
S4: organic fertilizer particle being placed in the ice bath that temperature is 0 DEG C, and addition is equivalent to the total matter of organic fertilizer particle
The bioactive agent solution of 10wt% is measured, ultrasonic wave added mechanical stirring is mixed, and setting ultrasonic power is 180W, and machinery stirs
The mixing speed mixed is 700rpm, takes out after freeze-drying, obtains Slow-release organic fertilizer intermediate；The bioactive agent solution
It is made of humic acid, bioactive enzyme and deionized water that mass ratio is 5:12:100；The bioactive enzyme is by 2.5 parts by weight
Azotase, 2.5 parts by weight phosphorus decomposing enzymes, 1.5 parts by weight potassium decomposing enzymes, 1.5 parts by weight heavy metal adsorption enzymes and 2 parts by weight diseases prevention enzyme groups
At；
S5: according to parts by weight, weighing 20 parts of celluloses, 3.5 parts of PEG6000,30 parts of ethyl alcohol and 100 parts of deionized waters,
It is uniformly mixed and is configured to coating solution, the coating solution is uniformly sprayed at Slow-release organic fertilizer midbody particle by high-pressure spray gun
Surface is dried to obtain the Slow-release organic fertilizer after making its particle surface weight gain 10%.
In the step S2, the raw material of the organic fertilizer is made of agricultural wastes, excrement of animals, riverway sludge,
The organic fertilizer is formed by aerobic composting process fermentation maturity, by the aerobic composting process of existing maturation, by agriculture waste
Object, excrement of animals, riverway sludge are 30:50:45 by weight, in temperature 60 C with top fermentation 10 days, need to turn in fermentation process
Three times, the organic fertilizer is obtained after carrying out abundant fermentation maturity.
Embodiment 4
The present embodiment Slow-release organic fertilizer, Slow-release organic fertilizer raw material composition, preparation method substantially with 1 phase of embodiment
Seemingly, it is in place of main difference, the organic fertilizer additional amount is equivalent to the 10% of the mixed solution gross mass, described to have
Machine fertiliser granulates partial size is 0.5mm；
The bioactive agent solution additional amount is equivalent to the 1wt% of the organic fertilizer particle gross mass；The biology
Activator solution is made of humic acid, bioactive enzyme and the deionized water that mass ratio is 5:8:100；The bioactive enzyme by
2.5 parts by weight azotases, 1.5 parts by weight phosphorus decomposing enzymes, 2 parts by weight potassium decomposing enzymes, 1.5 parts by weight heavy metal adsorption enzymes and 2.5 weight
Part diseases prevention enzyme composition；
According to parts by weight, 10 parts of celluloses, 0.5 part of PEG6000,15 parts of ethyl alcohol and 100 parts of deionized waters are weighed, are mixed
Uniformly it is configured to coating solution.
Embodiment 5
The present embodiment Slow-release organic fertilizer, Slow-release organic fertilizer raw material composition, preparation method substantially with 1 phase of embodiment
Seemingly, it is in place of main difference, the organic fertilizer additional amount is equivalent to the 5% of the mixed solution gross mass, described to have
Machine fertiliser granulates partial size is 3mm；
The bioactive agent solution additional amount is equivalent to the 12wt% of the organic fertilizer particle gross mass；The biology
Activator solution is made of humic acid, bioactive enzyme and the deionized water that mass ratio is 1:4:100；The bioactive enzyme by
2 parts by weight azotases, 2 parts by weight phosphorus decomposing enzymes, 2 parts by weight potassium decomposing enzymes, 2 parts by weight heavy metal adsorption enzymes and 2 parts by weight diseases prevention enzymes
Composition；
According to parts by weight, 17 parts of celluloses, 2.5 parts of PEG6000,18 parts of ethyl alcohol and 100 parts of deionized waters are weighed, are mixed
Uniformly it is configured to coating solution.
In the soil that the organic fertilizer of embodiment 1 to 5 is topdressed to greenhouse gardening cucumber, application effect is as shown in table 1,
The crop of the grown on soil of common fertilizer will wherein be applied as a comparison case:
Table 1
Under the green cucumber greenhouse and soil environment of the same terms, by the organic fertilizer of embodiment 1 to 5 and as a comparison
The common fertilizer of example, 20 parts are respectively weighed by identical weight, after applying respectively, in the identical maturity period, are picked cucumber and are weighed, count
The deviation of weight value of 20 portions of cucumber of each embodiment plantation is calculated, the results are shown in Table 2:
Table 2
| Effect | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Comparative example |
| Deviation of weight value, % | 2.8 | 3.0 | 2.5 | 2.9 | 3.1 | 10.2 |
| Appearance consistency | Preferably | Preferably | Preferably | Preferably | Preferably | Generally |
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and what is described in the above embodiment and the description is only the present invention
Principle, various changes and improvements may be made to the invention without departing from the spirit and scope of the present invention, these variation and
Improvement is both fallen in the range of claimed invention.
Claims (10)
1. a kind of preparation method of Slow-release organic fertilizer, which is characterized in that the preparation method comprises the following steps:
S1: sodium alginate, organobentonite, PEG600, sodium citrate and deionized water are stirred under the conditions of 40~60 DEG C of temperature
It mixes uniformly mixed, obtains mixed solution；
S2: the mixed solution and organic fertilizer are placed in autoclave, are passed through carbon dioxide, and pressurize and be warming up to supercritical state
State, the mixed solution are uniformly mixed under the action of supercritical carbon dioxide, form organic fertilizer lotion；
S3: reducing the export operation pressure of autoclave, and the organic fertilizer lotion that step S2 is obtained is with supercritical carbon dioxide one
It is precipitated with being sprayed from outlet nozzle, obtains the organic fertilizer particle of microcapsule coated；
S4: organic fertilizer particle is placed in ice bath, and the life for being equivalent to 1~12wt% of the organic fertilizer particle gross mass is added
Object activator solution, ultrasonic wave added mechanical stirring are mixed, are taken out after freeze-drying, and Slow-release organic fertilizer intermediate is obtained；
S5: according to parts by weight, 10~20 parts of celluloses, 0.5~3.5 part of PEG6000,15~30 parts of ethyl alcohol and 100 parts are weighed
Deionized water is uniformly mixed and is configured to coating solution, and the coating solution is uniformly sprayed at Slow-release organic fertilizer by high-pressure spray gun
Midbody particle surface is dried to obtain the Slow-release organic fertilizer.
2. the preparation method of Slow-release organic fertilizer as described in claim 1, which is characterized in that in the step S1, described
Sodium alginate, organobentonite, PEG600, sodium citrate and deionized water mass ratio be 30~50:10~15:3~8:1~
7:50~100.
3. the preparation method of Slow-release organic fertilizer as described in claim 1, which is characterized in that described in the step S2
The raw material of organic fertilizer is made of agricultural wastes, excrement of animals, riverway sludge, and the organic fertilizer passes through aerobic composting process
Fermentation maturity forms.
4. the preparation method of Slow-release organic fertilizer as described in claim 1, which is characterized in that described in the step S2
The temperature of supercriticality is 38~42 DEG C, pressure is 8~10MPa.
5. the preparation method of Slow-release organic fertilizer as described in claim 1, which is characterized in that described in the step S2
Organic fertilizer additional amount is equivalent to the 5~10% of the mixed solution gross mass.
6. the preparation method of Slow-release organic fertilizer as described in claim 1, which is characterized in that in the step S3, described
Organic fertilizer grain diameter is 0.5~3mm.
7. the preparation method of Slow-release organic fertilizer as described in claim 1, which is characterized in that described in the step S4
Bioactive agent solution is that 1~5:4~15:100 humic acid, bioactive enzyme and deionized water form by mass ratio.
8. the preparation method of Slow-release organic fertilizer as described in claim 1, which is characterized in that described in the step S4
The temperature of ice bath is 0~5 DEG C, and ultrasonic power is 100~200W, the churned mechanically mixing speed in the ultrasound procedure
For 500~800rpm.
9. the preparation method of Slow-release organic fertilizer as described in claim 1, which is characterized in that described in the step S5
Coating solution is sprayed at Slow-release organic fertilizer midbody particle surface, makes its particle surface weight gain 5~10%.
10. a kind of Slow-release organic fertilizer that the preparation method using Slow-release organic fertilizer as described in claim 1 is prepared.
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| CN114644535A (en) * | 2021-06-28 | 2022-06-21 | 石河子大学 | Carbon dioxide fertilizer for regulating plant photosynthesis and preparation method and application thereof |
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| CN114644535B (en) * | 2021-06-28 | 2023-03-14 | 石河子大学 | Carbon dioxide fertilizer for regulating and controlling plant photosynthesis and preparation method and application thereof |
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