CN107586190A - A kind of tea tree charcoal base selenium-enriched fertilizer - Google Patents
A kind of tea tree charcoal base selenium-enriched fertilizer Download PDFInfo
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- CN107586190A CN107586190A CN201710657671.9A CN201710657671A CN107586190A CN 107586190 A CN107586190 A CN 107586190A CN 201710657671 A CN201710657671 A CN 201710657671A CN 107586190 A CN107586190 A CN 107586190A
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/40—Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse
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Abstract
The invention belongs to technical field of fertilizers.The invention discloses a kind of tea tree charcoal base selenium-enriched fertilizer, it is made up of Se-enriched bio charcoal, selenium-rich food waste fermentation fertilizer, super absorbent polymer and quartz sand, wherein the content of Se-enriched bio charcoal is 40~50wt%, the content of selenium-rich food waste fermentation fertilizer is 30~40, the content of super absorbent polymer is 3~8wt%, and surplus is quartz sand.Selenium element exists in the form of Organic Selenium in the present invention, and in production, processing and application, the harm to related personnel is minimum；Existing selenium-enriched fertilizer can be overcome to apply rear soil Se content inequality, crop（Tea tree）The problems such as selenium malabsorption and not high utilization rate, selenium-enriched fertilizer is not readily dissolved in water, will not also be washed away and be failed with rainwater/irrigation water；Selenium-enriched fertilizer has improvement soil acidification, optimizes the effect of soil texture, improves soil quality, also has the function that removing, mitigation, passivation heavy metal in soil pollute.
Description
Technical field
The present invention relates to technical field of fertilizers, more particularly, to a kind of tea tree charcoal base selenium-enriched fertilizer.
Background technology
Selenium (Se) is a kind of trace element, and molecular weight is 78.96, and Group VIA is located in the periodic table of chemical element, chemistry
Property is similar to element sulphur of the same clan.Current prevailing paradigm thinks that appropriate selenium is kept fit to human body with weight in diet
Act on.First, selenium plays irreplaceable effect in terms of the oxidation resistance of human body is improved.In addition, selenium also have anticancer,
Liver protecting, with reference to important physiological functions such as heavy metal, prevention and cure of cardiovascular disease.Meanwhile selenium deficiency or mankind's Kaschin-Beck disease, gram
The important origin cause of formation of mountain disease.
Selenium plays an important role as important trace element to plant growth, health.But inorganic selenium is not
Utilization can be directly absorbed by the body, and the inorganic selenium in natural environment can be changed into Organic Selenium by plant by conversion.Cause
This, plant is main path and important sources that mankind's selenium is taken in as important selenium conversion person.
However, the selenium deficiency soil erosion in China has reached 72%.National beneficial micro- intake this to selenium is still
Health demand can not be met, also not up to recommendation.
With more attention of the people to selenium element, large quantities of fertilizer for being used to cultivate reinforcing selenium-rich crops have been emerged in large numbers on the market
Material, but these in other words there is problems with selenium-enriched fertilizer containing selenium：1. selenium element source is mostly in selenium-enriched fertilizer on the market
For inorganic selenium, usually sodium selenate or sodium selenite, because sodium selenate has hypertoxicity, more selenium-enriched fertilizers use selenous acid
Sodium is as selenium element source, although sodium selenite toxicity is smaller compared with sodium selenate, itself or a kind of original with toxic side effect
Material, particularly in production, processing and application, the infringement to related practitioner is larger；2. selenium-enriched fertilizer on the market
It is made after often salt containing selenium mixes with some other inorganic fertilizer, its is soluble in water, is easily washed away in other words by rainwater etc.,
Easily failure.
The content of the invention
To solve the above problems, the invention provides a kind of Se content height and soil acidification, enhancing soil water-retaining can be improved
The tea tree charcoal base selenium-enriched fertilizer of the problems such as property, while also have mitigation concurrently, prevent the problems such as heavy metal pollution of soil.
To achieve the above object, the technical solution adopted by the present invention is as follows：
A kind of tea tree charcoal base selenium-enriched fertilizer, it is by Se-enriched bio charcoal, selenium-rich organic fermentation fertilizer, super absorbent polymer and stone
Sand forms, and wherein the content of Se-enriched bio charcoal is 40~50wt%, and the content of selenium-rich organic fermentation fertilizer is 30~40, high water absorption
The content of polymer is 3~8wt%, and surplus is quartz sand.
The object of the invention has two, and one is to provide a kind of higher fertilizer of Se content, and two, which are to provide one kind, can alleviate/improve
The fertilizer of heavy metal pollution of soil problem.First purpose realizes that component containing selenium is divided into two kinds, one kind by adding component containing selenium
It is the biological carbon materials through seleno-amino acids graft modification i.e. Se-enriched bio charcoal, another kind is having after yeast rich in selenium ferments
Machine discarded object is selenium-rich organic fermentation fertilizer；Selenium-rich organic fermentation fertilizer therein can not only provide the selenium element of high content, and it is also
With numerous nutriments, organic matter nutrient can be provided for the growth of crop；And Se-enriched bio charcoal is except providing selemium nutrition
Outside element, the absorption passivation of heavy metal is also had concurrently, play a part of reducing, prevent and treat heavy metal pollution of soil.Height is inhaled
Aqueous polymer can play a part of water conservation, and quartz sand can then increase the gas permeability of fertilizer.
Preferably, Se-enriched bio charcoal is 70~100 DEG C of concentrated sulfuric acids in temperature by tea tree branch charcoal and seleno-amino acids
It is made as reacting 1~3 hour under catalyst environment.
Preferably, when prepared by Se-enriched bio charcoal, the weight ratio of tea tree branch charcoal and seleno-amino acids is 10：（0.8~
1.5）, the weight of the concentrated sulfuric acid is the 1/10~1/5 of tea tree branch charcoal and seleno-amino acids weight.
Preferably, Se-enriched bio charcoal be made after in the aqueous solution that pH is 7~7.5 cleaning treatment and at 40~50 DEG C
Drying.
Preferably, the aqueous solution is the potassium ion aqueous solution or the sodium ion aqueous solution；Potassium ion and sodium ion in the aqueous solution
Total concentration is 1~3mol/L.
Preferably, seleno-amino acids are at least one of selenomethionine, selenocysteine or selenocystine.
Tea tree branch charcoal be it is a kind of by tea tree branch by the biological carbon materials that are prepared of limit oxygen temperature control charring, material
Loosely and the organic matter containing compared with juicy, wherein higher with reference to water content, after charing surface contain more carboxylics
Base and hydroxyl, these newborn carboxyls and hydroxyl have high activity, can be sent out with the amino on seleno-amino acids and carboxyl
Raw dehydration condensation, and then seleno-amino acids are grafted to biological carbon surface, and the seleno-amino acids that these are grafted exist
Again can be by the microorganism decomposition in soil after, and then become the nutriment that can be absorbed by crops.
Because in Se-enriched bio charcoal preparation process, i.e., seleno-amino acids grafting process is the change carried out under concentrated sulfuric acid environment
Learn reaction, it is therefore desirable to alkaline solution processing is carried out again after completion of the reaction to recover the alkaline nature of charcoal, while with containing
The alkaline solution processing of kalium ion and natrium ion, can also activate the surface of charcoal, can preferably adsorb the heavy metal in soil
Ion.
Preferably, tea tree branch charcoal is made by following steps：
a）Dry and crush after tea tree branch is cleaned；
b）Tea tree branch after clean drying is first handled 20~30 minutes under 200~300 DEG C of air atmospheres, then 500~700
Starvation heats 70~110 minutes at DEG C, and carbonizing production is made after cooling；
c）By carbonizing production at 70~90 DEG C drying and processing 12~16 hours, be ground to after 50~70 mesh and tea tree branch biology be made
Charcoal.
Tea tree branch charcoal by tea tree branch by limit oxygen temperature control charring be prepared, tea tree branch be a kind of material loosely
And the organic matter containing compared with juicy, and it is wherein higher with reference to water content, microchannel knot is being more readily formed after charing
Structure, and the reason more due to combining water, wherein the most of microchannel formed has less diameter and Geng Gao ratio table
Area a, using the teaching of the invention it is possible to provide absorption property that charcoal is made better than other biological matter.
The carbonization process of tea tree branch is roughly divided into two steps in the present invention, before this Low Temperature Heat Treatment under air atmosphere, then be into
High temperature carbonization processing under row high temperature anoxybiotic environment, latter step is preparation process common in biological carbon materials carbonization process,
This is repeated no more.Because tea tree branch surface has a more volatile components and ash grades impurity, if it is exhausted directly to carry out high temperature
Oxygen charing process, these volatile components and ash grade, and impurity is easy to form the gel-like foreign matters with certain adhesiveness, and these are miscellaneous
Matter is attached to biological carbon surface, produces larger harmful effect to the absorption property of biological carbon materials, while these impurity are also very
It is not easy to remove；For such case, before tea tree branch charing process, first carry out the oxidizing atmosphere under cryogenic conditions be heat-treated with
These volatile components in tea tree branch are removed, while can also take away the impurity such as ash content, the wax on tea tree branch surface, to ensure
Tea tree branch charcoal has preferable high absorption property, larger specific surface area and porosity.
Preferably, selenium-rich organic fermentation fertilizer is made by organic waste after yeast rich in selenium ferments；Organic waste
The high organic content discarded object that can be selected in the production and living such as rubbish from cooking, waste straw, feces of livestock and poultry.
Yeast rich in selenium is a kind of saccharomycete cultivated via selenium-rich nutriment, has higher Se content, is gone out in fermentation
These selenium elements, which enter in organic fermentation fertilizer, after work turns into selenium-rich organic fermentation fertilizer, and provides selenium raw material for crop.
Preferably, super absorbent polymer is Sodium Polyacrylate or starch acrylonitrile graft copolymer.
Preferably, the particle diameter of quartz sand is 30~60 mesh.
Therefore, the invention has the advantages that：
（1）Selenium element exists in the form of Organic Selenium in the present invention, in production, processing and application, to related personnel's
Endanger minimum；
（2）The present invention can overcome existing selenium-enriched fertilizer to apply rear soil Se content inequality, crop（Tea tree）Selenium malabsorption, selenium are inhaled
Receive the problem of utilization rate is not high；
（3）Selenium-enriched fertilizer in the present invention is not readily dissolved in water, will not also be washed away and be failed with rainwater/irrigation water；
（4）Selenium-enriched fertilizer in the present invention has improvement soil acidification, optimizes the effect of soil texture, also has and removes, mitigates
It is passivated the effect of heavy metal in soil pollution.
Embodiment
Technical scheme is further described with reference to embodiment.
Obviously, described embodiment is only the part of the embodiment of the present invention, rather than whole embodiments.Based on this
Embodiment in invention, all other reality that those of ordinary skill in the art are obtained under the premise of creative work is not made
Example is applied, belongs to the scope of protection of the invention.
In the present invention, if not refering in particular to, all equipment and raw material are commercially available or the industry is conventional,
Method in following embodiments, it is this area conventional method unless otherwise instructed.
Embodiment 1
A kind of tea tree charcoal base selenium-enriched fertilizer, it is by Se-enriched bio charcoal, selenium-rich organic fermentation fertilizer, super absorbent polymer and stone
Sand forms, and wherein the content of Se-enriched bio charcoal is 40wt%, and the content of selenium-rich organic fermentation fertilizer is 30 wt%, and high water absorption polymerize
The content of thing is 3wt%, quartz sand 27wt%；Super absorbent polymer is Sodium Polyacrylate, and the particle diameter of quartz sand is 30 mesh；
Selenium-rich organic fermentation fertilizer is made by pig manure after yeast rich in selenium ferments；
Se-enriched bio charcoal by tea tree branch charcoal and seleno-amino acids temperature be 70 DEG C of concentrated sulfuric acids as catalyst environment under instead
Answer 1 hour and be made, Se-enriched bio charcoal cleaning treatment and is dried after being made in the aqueous solution that pH is 7 at 40 DEG C, and the aqueous solution is
The potassium ion aqueous solution, potassium concentration is 1mol/L in the aqueous solution；Seleno-amino acids are selenomethionine；It is prepared by Se-enriched bio charcoal
When, the weight ratio of tea tree branch charcoal and seleno-amino acids is 10：0.8, the weight of the concentrated sulfuric acid is tea tree branch charcoal and seleno
The 1/10 of amino acid weight；
Tea tree branch charcoal is made by following steps：
a）Dry and crush after tea tree branch is cleaned；
b）Tea tree branch after clean drying is first handled 20 minutes under 200 DEG C of air atmospheres, then starvation adds at 500 DEG C
Heat 70 minutes, carbonizing production is made after cooling；
c）By carbonizing production at 70 DEG C drying and processing 12 hours, be ground to after 50 mesh and tea tree branch charcoal be made.
Embodiment 2
A kind of tea tree charcoal base selenium-enriched fertilizer, it is by Se-enriched bio charcoal, selenium-rich organic fermentation fertilizer, super absorbent polymer and stone
Sand forms, and wherein the content of Se-enriched bio charcoal is 50wt%, and the content of selenium-rich organic fermentation fertilizer is 40 wt%, and high water absorption polymerize
The content of thing is 8wt%, quartz sand 2wt%；Super absorbent polymer is starch acrylonitrile graft copolymer, and the particle diameter of quartz sand is 60
Mesh；
Selenium-rich organic fermentation fertilizer is made by rubbish from cooking after yeast rich in selenium ferments；
Se-enriched bio charcoal by tea tree branch charcoal and seleno-amino acids temperature be 100 DEG C of concentrated sulfuric acids as catalyst environment under instead
Answer 3 hours and be made, Se-enriched bio charcoal cleaning treatment and is dried, the aqueous solution after being made in the aqueous solution that pH is 7.5 at 50 DEG C
For the sodium ion aqueous solution, the concentration of Na in Solution ion is 3mol/L；Seleno-amino acids are selenocysteine；Se-enriched bio
When prepared by charcoal, the weight ratio of tea tree branch charcoal and seleno-amino acids is 10：1.5, the weight of the concentrated sulfuric acid is tea tree branch charcoal
With the 1/5 of seleno-amino acids weight；
Tea tree branch charcoal is made by following steps：
a）Dry and crush after tea tree branch is cleaned；
b）Tea tree branch after clean drying is first handled 30 minutes under 300 DEG C of air atmospheres, then starvation adds at 700 DEG C
Heat 110 minutes, carbonizing production is made after cooling；
c）By carbonizing production at 90 DEG C drying and processing 16 hours, be ground to after 70 mesh and tea tree branch charcoal be made.
Embodiment 3
A kind of tea tree charcoal base selenium-enriched fertilizer, it is by Se-enriched bio charcoal, selenium-rich organic fermentation fertilizer, super absorbent polymer and stone
Sand forms, and wherein the content of Se-enriched bio charcoal is 45wt%, and the content of selenium-rich organic fermentation fertilizer is 35 wt%, and high water absorption polymerize
The content of thing is 5wt%, quartz sand 15wt%；Super absorbent polymer is starch acrylonitrile graft copolymer, and the particle diameter of quartz sand is
40 mesh；
Selenium-rich organic fermentation fertilizer is made by organic waste after yeast rich in selenium ferments；
Se-enriched bio charcoal by tea tree branch charcoal and seleno-amino acids temperature be 80 DEG C of concentrated sulfuric acids as catalyst environment under instead
Answer 1.5 hours and be made, Se-enriched bio charcoal cleaning treatment and is dried after being made in the aqueous solution that pH is 7.5 at 45 DEG C, water-soluble
Liquid is the potassium ion aqueous solution and the sodium ion aqueous solution, and the total concentration of potassium ion and sodium ion is 1.5mol/L in the aqueous solution, potassium from
Sub- concentration is the 1/2 of Na ion concentration；Seleno-amino acids are selenocystine；When prepared by Se-enriched bio charcoal, tea tree branch charcoal
Weight ratio with seleno-amino acids is 10：1, the weight of the concentrated sulfuric acid is the 3/20 of tea tree branch charcoal and seleno-amino acids weight；
Tea tree branch charcoal is made by following steps：
a）Dry and crush after tea tree branch is cleaned；
b）Tea tree branch after clean drying is first handled 25 minutes under 220 DEG C of air atmospheres, then starvation adds at 550 DEG C
Heat 80 minutes, carbonizing production is made after cooling；
c）By carbonizing production at 75 DEG C drying and processing 15 hours, be ground to after 55 mesh and tea tree branch charcoal be made.
Embodiment 4
A kind of tea tree charcoal base selenium-enriched fertilizer, it is by Se-enriched bio charcoal, selenium-rich organic fermentation fertilizer, super absorbent polymer and stone
Sand forms, and the wherein content of Se-enriched bio charcoal be 48wt%, and the fertile content of selenium-rich organic fermentation is 32wt%, super absorbent polymer
Content be 5wt%, quartz sand 15wt%；Super absorbent polymer is Sodium Polyacrylate, and the particle diameter of quartz sand is 45 mesh；
Selenium-rich organic fermentation fertilizer is made by waste straw after yeast rich in selenium ferments；
Se-enriched bio charcoal by tea tree branch charcoal and seleno-amino acids temperature be 85 DEG C of concentrated sulfuric acids as catalyst environment under instead
Answer 2 hours and be made, Se-enriched bio charcoal cleaning treatment and is dried, the aqueous solution after being made in the aqueous solution that pH is 7.2 at 45 DEG C
For the sodium ion aqueous solution, the total concentration of Na in Solution ion is 1.8mol/L；Seleno-amino acids are selenomethionine and seleno
Cysteine is by weight 1：1 mixture；When prepared by Se-enriched bio charcoal, the weight ratio of tea tree branch charcoal and seleno-amino acids
For 10：1.2, the weight of the concentrated sulfuric acid is the 13% of tea tree branch charcoal and seleno-amino acids weight；
Tea tree branch charcoal is made by following steps：
a）Dry and crush after tea tree branch is cleaned；
b）Tea tree branch after clean drying is first handled 20 minutes under 280 DEG C of air atmospheres, then starvation adds at 700 DEG C
Heat 90 minutes, carbonizing production is made after cooling；
c）By carbonizing production at 80 DEG C drying and processing 12 hours, be ground to after 60 mesh and tea tree branch charcoal be made.
Embodiment 5
A kind of tea tree charcoal base selenium-enriched fertilizer, it is by Se-enriched bio charcoal, selenium-rich organic fermentation fertilizer, super absorbent polymer and stone
Sand forms, and the wherein content of Se-enriched bio charcoal be 42wt%, and the fertile content of selenium-rich organic fermentation is 38wt%, super absorbent polymer
Content be 8wt%, quartz sand 12wt%；Super absorbent polymer is starch acrylonitrile graft copolymer, and the particle diameter of quartz sand is 50
Mesh；
Selenium-rich organic fermentation fertilizer is made by rubbish from cooking after yeast rich in selenium ferments；
Se-enriched bio charcoal by tea tree branch charcoal and seleno-amino acids temperature be 90 DEG C of concentrated sulfuric acids as catalyst environment under instead
Answer 2.5 hours and be made, Se-enriched bio charcoal cleaning treatment and is dried after being made in the aqueous solution that pH is 7.3 at 45 DEG C, water-soluble
Liquid is the potassium ion aqueous solution and the sodium ion aqueous solution, and the total concentration of potassium ion and sodium ion is 2.4mol/L in the aqueous solution, potassium from
Sub- concentration is 2 times of Na ion concentration；Seleno-amino acids are selenomethionine, selenocysteine and selenocystine weight ratio
1：1：1 mixture；When prepared by Se-enriched bio charcoal, the weight ratio of tea tree branch charcoal and seleno-amino acids is 10：1.4, dense sulphur
The weight of acid is the 17% of tea tree branch charcoal and seleno-amino acids weight；
Tea tree branch charcoal is made by following steps：
a）Dry and crush after tea tree branch is cleaned；
b）Tea tree branch after clean drying is first handled 25 minutes under 280 DEG C of air atmospheres, then starvation adds at 650 DEG C
Heat 100 minutes, carbonizing production is made after cooling；
c）By carbonizing production at 85 DEG C drying and processing 14 hours, be ground to after 60 mesh and tea tree branch charcoal be made.
Technique effect：
Se content：2~4mg/kg；
PH value：7.5~8；
Water absorption rate：100~150g/kg；
Heavy metal maximal absorptive capacity：95~110mg/g（Cd2+Measured under the conditions of 80mg/L, pH7.0,25 DEG C of concentration）.
It should be appreciated that to those skilled in the art, it can according to the above description be improved or be become
Change, and all these modifications and variations should all belong to the protection domain of appended claims of the present invention.
Claims (10)
- A kind of 1. tea tree charcoal base selenium-enriched fertilizer, it is characterised in that：It is fermented fertile, high by Se-enriched bio charcoal, selenium-rich organic Water absorbent polymer and quartz sand composition, the wherein content of Se-enriched bio charcoal are 40~50wt%, and the content of selenium-rich organic fermentation fertilizer is 30~40wt%, the content of super absorbent polymer is 3~8wt%, and surplus is quartz sand.
- A kind of 2. tea tree according to claim 1 charcoal base selenium-enriched fertilizer, it is characterised in that：Described Se-enriched bio charcoal is that 70~100 DEG C of concentrated sulfuric acids are used as catalysis in temperature by tea tree branch charcoal and seleno-amino acids React 1~3 hour and be made under agent environment.
- A kind of 3. tea tree according to claim 2 charcoal base selenium-enriched fertilizer, it is characterised in that：When prepared by the Se-enriched bio charcoal, the weight ratio of tea tree branch charcoal and seleno-amino acids is 10：（0.8~1.5）, dense sulphur The weight of acid is the 1/10~1/5 of tea tree branch charcoal and seleno-amino acids weight.
- A kind of 4. tea tree according to claim 2 charcoal base selenium-enriched fertilizer, it is characterised in that：The Se-enriched bio charcoal cleaning treatment and is dried after being made in the aqueous solution that pH is 7~7.5 at 40~50 DEG C.
- A kind of 5. tea tree according to claim 4 charcoal base selenium-enriched fertilizer, it is characterised in that：The described aqueous solution is the potassium ion aqueous solution or the sodium ion aqueous solution；The total concentration of potassium ion and sodium ion is in the aqueous solution 1~3mol/L.
- A kind of 6. tea tree charcoal base selenium-enriched fertilizer according to Claims 2 or 3, it is characterised in that：Described seleno-amino acids are at least one of selenomethionine, selenocysteine or selenocystine.
- A kind of 7. tea tree according to claim 2 charcoal base selenium-enriched fertilizer, it is characterised in that described tea tree branch life Thing charcoal is made by following steps：a）Dry and crush after tea tree branch is cleaned；b）Tea tree branch after clean drying is first handled 20~30 minutes under 200~300 DEG C of air atmospheres, then 500~700 Starvation heats 70~110 minutes at DEG C, and carbonizing production is made after cooling；c）By carbonizing production at 70~90 DEG C drying and processing 12~16 hours, be ground to after 50~70 mesh and tea tree branch biology be made Charcoal.
- A kind of 8. tea tree according to claim 1 charcoal base selenium-enriched fertilizer, it is characterised in that：Described selenium-rich organic fermentation fertilizer is made by organic waste after yeast rich in selenium ferments.
- A kind of 9. tea tree according to claim 1 charcoal base selenium-enriched fertilizer, it is characterised in that：Described super absorbent polymer is Sodium Polyacrylate or starch acrylonitrile graft copolymer.
- A kind of 10. tea tree according to claim 1 charcoal base selenium-enriched fertilizer, it is characterised in that：The particle diameter of the quartz sand is 30~60 mesh.
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| CN109608263A (en) * | 2018-12-27 | 2019-04-12 | 天津亚德尔生物质科技股份有限公司 | A kind of preparation method of charcoal selenium fertilizer |
| CN112919968A (en) * | 2021-03-05 | 2021-06-08 | 湖南华田盛德生物科技有限公司 | Selenium-rich compound fertilizer and preparation method thereof |
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| CN117987145A (en) * | 2024-03-14 | 2024-05-07 | 天津市地质研究和海洋地质中心 | Composite regulating agent suitable for saline-alkali soil improvement |
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