CN109988044A - A kind of modified corn core charcoal base slow-release compound fertilizer and its preparation method and application - Google Patents
A kind of modified corn core charcoal base slow-release compound fertilizer and its preparation method and application Download PDFInfo
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- CN109988044A CN109988044A CN201910294900.4A CN201910294900A CN109988044A CN 109988044 A CN109988044 A CN 109988044A CN 201910294900 A CN201910294900 A CN 201910294900A CN 109988044 A CN109988044 A CN 109988044A
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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
- C05B1/06—Ammoniation of 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
- C05G3/80—Soil conditioners
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Abstract
The present invention provides a kind of modified corn core charcoal base slow-release compound fertilizers and its preparation method and application, belong to technical field of fertilizers.Modified corn core charcoal base slow-release compound fertilizer, comprises the following components in parts by weight: 5~23.7 parts of modified corn core charcoals, 71.3~82 parts of chemical fertilizer and 5~8 parts of bentonites；It further include 1~6 part of aspergillus niger H201 strain culture.Compound fertilizer, institute not only increases plant nutrient, also relying on charcoal and aspergillus niger H201 strain culture special construction has stronger adsorption capacity to fertilizer nutrient, it can make the nutrient slow release being adsorbed, reduce its volatilization, dead loss and leaching loss in the soil, increase crop to the absorption rate of nutrient, soil organic matter content can also be increased simultaneously, improvement soil physical property improves soil productivity, therefore the application by the compound fertilizer in crops especially corn planting.
Description
Technical field
The invention belongs to technical field of fertilizers, and in particular to a kind of modified corn core charcoal base slow-release compound fertilizer and its system
Preparation Method and application.
Background technique
Grand nutrition element nitrogen, phosphorus, potassium in soil generally can not meet the needs of plant growth, need to apply it is nitrogenous,
Phosphorus, potassium chemical fertilizer supply.Common chemical fertilizer includes nitrogenous fertilizer, phosphate fertilizer, potash fertilizer, micro- fertilizer, compound fertilizer etc., has ingredient simple,
Nutrient content is high, and fertilizer efficiency is fast, the violent feature of fertile strength, but certain fertilizer have acid-base reaction, while being generally free of organic matter, and nothing changes
The effect of earth culture fertilizer.
For the nitrogenous fertilizer of conventional chemical fertilizers due to the influence of the factors such as volatilization, leaching loss and soil fixing, utilization rate is not high always,
Nitrogenous fertilizer this season utilization rate only has 30%~40%, and phosphate fertilizer this season utilization rate only has 10%~20% or so；Microelement utilization rate
It is lower, and apply this season and be difficult to play one's part to the full.Utilization rate of fertilizer is not high, not only influences increasing crop yield and increases matter, reduces warp
Ji benefit, it is also possible to cause a series of ecological environment problem.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of modified corn core charcoal base slow-release compound fertilizer and its preparations
Methods and applications, the modified corn core biology charcoal slow-release fertilizer have reduction fertilizer nutrient leaching loss, and extend fertilizer nutrient has
The effect phase maintains soil nutrient concentration, promotes crop to the effect of the absorption of nutrient.
The present invention provides a kind of modified corn core charcoal base slow-release compound fertilizers, comprise the following components in parts by weight:
5~23.7 parts of modified corn core charcoals, 71.3~82 parts of chemical fertilizer and 5~8 parts of bentonites；
The preparation method of the modified corn core charcoal, comprising the following steps:
1) corncob ground-slag and graphene oxide are mixed, obtains mixture；
2) by the mixture successively in 90~110 DEG C of 55~65min of firing, in 290~310 DEG C of 1.8~2.2h of firing
With in 490~510 DEG C of 2.5~3.5h of firing, charcoal raw material are obtained；
3) the charcoal raw material are crushed, sieving obtains charcoal particle；
4) by the charcoal particle and FeCl3Solution, mixing, 58~62 DEG C of standings go moisture removal, 250~350 DEG C of heat
1.5~2h is handled, modified corn core charcoal is obtained.
Preferably, the mass ratio of the corncob ground-slag and graphene oxide is 100~200:1.
Preferably, the mixture is successively in 100 DEG C of firing 60min, in 300 DEG C of firing 2h and in 500 DEG C of firing 3h.
Preferably, the FeCl3The mass ratio of liquor capacity and charcoal particle is 10~15ml:1g；The FeCl3It is molten
The concentration of liquid is preferably 0.05mol/L.
Preferably, it comprises the following components in parts by weight: 10~20 parts of modified corn core charcoals, 75~80 parts of chemistry fertilizer
Material and 6~7 parts of bentonites.
Preferably, to account for the slow-release compound fertilizer mass percentage concentration as follows for each component in the chemical fertilizer: urea
35.0%~40.2%, ammonium superphosphate 19.6%~21.8%, potassium chloride 16.7%~20.0%.
It preferably, further include 1~6 part of aspergillus niger H201 bacterial strain training on the basis of the parts by weight of modified corn core charcoal
Support object；The deposit number of the aspergillus niger H201 bacterial strain is CGMCCNo.3.17612.
The present invention provides the preparation methods of the slow-release compound fertilizer, comprising the following steps:
A. modified corn core charcoal, chemical fertilizer and bentonite are mixed, obtains mixture；
B. the mixture is pelletized at 80~100 DEG C, obtains slow-release compound fertilizer.
Preferably, when component further includes aspergillus niger H201 strain culture, by the aspergillus niger H201 strain culture
It is mixed together with modified corn core charcoal.
The present invention provides the application of the slow-release compound fertilizer or the slow-release compound fertilizer of the preparation in crop planting.
A kind of modified corn core charcoal base slow-release compound fertilizer provided by the invention is combined according to corn growing season fertilizer requirement
China's soil fertility feature, prescription manufactures after soil measurement formula, utilizes chemical fertilizer, modified corn core charcoal and bentonite
Carry out mixed processing.Big to nitrogen demand according to the nutrient uptake feature of corn, nitrogen phosphoris and potassium fertilizer ratio is about 1: 0.48: 0.8.It is low
The modified corn core charcoal (being lower than 400 DEG C) of temperature preparation is containing elements such as a certain amount of nitrogen, phosphorus, potassium, sodium, magnesium, silicon.Modified corn
Core charcoal not only increases plant nutrient, and the special construction of modified corn core charcoal is allowed to have fertilizer nutrient relatively by force
Adsorption capacity, the nutrient slow release being adsorbed can be made, reduce its volatilization, dead loss and leaching loss in the soil, increase
Absorption rate of the crop to nutrient.For charcoal in alkalinity, soil acidification can be alleviated by inputting in the soil of application chemical fertilizer for many years,
Meanwhile it can inhibit soil urease liveness and hydrolysis of urea effectively delayed to reduce ammonia loss by volatilization at ammonium nitrogen process.Modified corn
Core charcoal can increase soil organic matter content, improve soil physical property, improve soil microbial activities, accelerate soil material
And energy circulation, improve soil productivity.
Compared with other Common compound fertilizers, the major advantage of compound fertilizer provided by the invention is as follows:
1, nutrient is complete, and utilization rate is high, and fertilizer efficiency period is long.Modified corn core charcoal is added so that common fertilizer water solubility subtracts
Weak, volatility reduction；Reduce nitrogenous fertilizer leaching loss, volatilization destruction caused by ecological environment.The what is said or talked about of modification biological is nontoxic,
Soil conditioner can be played the role of by being converted into humus in the soil；Nitrogen use efficiency 10%~12%, phosphorus can be improved in the present invention
Utilization rate 5%~8%, potassium utilization rate 5% or so, and middle microelement utilization rate can be significantly improved.The application of the special fertilizer is aobvious
Work raising N,P,K fertilizers utilization rate, field application fertilizer efficiency are long, can save fertilizer and increase production and save manually, can obtain good economy
And environmental benefit.
2, a variety of nutrients needed for meeting and supplying plant growth, coordinate plant growth improve crop yield and quality.This
Invention nutrient allocation is reasonable, containing nitrogen, phosphorus needed for plant growth, potassium and a variety of middle microelements, and containing high-quality carbon with
And the physiological activators such as various small molecular organic acids and polysaccharide, crop can be accelerated metabolic, coordinate plant growth extends leaf
Piece functional period improves corn resistance, improves drought-resistant maize, premature senescence resistance, lodging tolerance.
3. improveing soil physical property, promotes the formation of healthy geobiont chain, reduce and prevent the derivative of pest and disease damage, be
Plant growth establishes excellent ecological organic condition.
Further, it includes aspergillus niger H201 culture that compound fertilizer provided by the invention, which has further defined,.It is described black
Aspergillus H201 culture not only increases plant nutrient, and is allowed to have stronger adsorption capacity to fertilizer nutrient, can make to be inhaled
Attached nutrient slow release reduces its volatilization, dead loss and leaching loss in the soil, increases crop and nutrient is absorbed and utilized
Rate.Aspergillus niger H201 culture can increase soil organic matter content simultaneously, improve soil physical property, and it is living to improve edaphon
Property, accelerate soil material and energy circulation, improves soil productivity.
Biomaterial preservation information
Aspergillus niger (Aspergillus niger), depositary institution: China Committee for Culture Collection of Microorganisms is commonly micro-
Bio-Centers (CGMCC), address: Yard 1, BeiChen xi Road, Chaoyang District, Beijing City 3, Institute of Microorganism, Academia Sinica are protected
It hides the date: on 06 29th, 2015, deposit number: CGMCC No.3.17612, strain number H201KP280086.
Specific embodiment
The present invention provides a kind of modified corn core charcoal base slow-release compound fertilizers, comprise the following components in parts by weight:
5~23.7 parts of modified corn core charcoals, 71.3~82 parts of chemical fertilizer and 5~8 parts of bentonites.
Slow-release compound fertilizer provided by the invention includes modified corn core charcoal, by weight, the modified corn core
Charcoal is preferably 10~18 parts, and more preferably 15 parts.The preparation method of the modified corn core charcoal, including following step
It is rapid:
1) corncob ground-slag and graphene oxide are mixed, obtains mixture；
2) by the mixture successively in 90~110 DEG C of 55~65min of firing, in 290~310 DEG C of 1.8~2.2h of firing
With in 490~510 DEG C of 2.5~3.5h of firing, charcoal raw material are obtained；
3) the charcoal raw material are crushed, sieving obtains charcoal particle；
4) by the charcoal particle and FeCl3Solution, mixing, 58~62 DEG C of standings go moisture removal, 250~350 DEG C of heat
1.5~2h is handled, modified corn core charcoal is obtained.
In the present invention, preferably corncob drying, crushing and sieving are prepared for the corncob ground-slag.The baking
Dry temperature is preferably 50~80 DEG C, and more preferably 60~70 DEG C.The aperture of sieving sieve is preferably 80~100 mesh,
More preferably 90 mesh.The mass ratio of the corncob ground-slag and graphene oxide is preferably 150:1.
In the present invention, the mixture is preferably successively in 100 DEG C of firing 60min, in 300 DEG C of firing 2h and at 500 DEG C
Fire 3h.Keep the reaction of biomass raw material more thorough uniform using the purpose that gradient temperature is fired, improves and be pyrolyzed resulting life
Object charcoal performance, enhances its adsorption capacity.
In the present invention, the FeCl3The volume of solution and the mass ratio of charcoal particle are preferably 0.56~1ml:1g,
More preferably 0.82ml:1g.The FeCl3The concentration of solution is preferably 1mol/L.
In the present invention, the temperature of the standing is preferably 60 DEG C, and the time of the standing is 2h；It is described to remove moisture removal
Method be preferably placed in baking oven and dry moisture at 85~105 DEG C.The temperature of the heat treatment is 2h.The modified corn
Water content≤10% of core charcoal.
The porosity of modified biomass charcoal is 51.9%~54.2%, and specific surface area is 9.72~11.3m2/ g, average hole
Diameter is 17.9~23.4nm.And the hole for the unmodified biomass charcoal for directly being prepared and (directly being fired according to step 2) with corncob
Rate is 47.3%~49.5%, and specific surface area is 4.57~4.83m2/ g, average pore size are 7.02~9.87nm.Show GO/Fe/
Biomass carbon has bigger surface area and richer pore structure, is more advantageous to nutrient needed for plant in soil
Fixing.
Modified corn core charcoal prepared by the present invention more has due to adding graphene and Fe during preparing charcoal
Large specific surface area is formed conducive to charcoal, the charcoal more than aperture improves the suction of inorganic salts with stronger absorption property
Attached, fixed fertilizer achievees the purpose that slow release into soil to apply in compound fertilizer.
Compound fertilizer provided by the invention includes chemical fertilizer.By weight, the chemical fertilizer is preferably 75~80 parts,
More preferably 78 parts.It is preferably as follows to account for the slow-release compound fertilizer mass percentage concentration for each component in the chemical fertilizer: urea
35.0%~40.2%, ammonium superphosphate 19.6%~21.8%, potassium chloride 16.7%~20.0%.
Compound fertilizer provided by the invention includes bentonite.The bentonite is pulverized and sieved to partial size≤40 mesh.It is described swollen
Profit soil has excellent suspension, dispersibility, is usually used in pesticide as suspending agent and dispersible carrier, low in cost, effect is good
It is good, toxic side effect will not be generated to crops.Granular fertilizer is made in fertilizer using bentonitic caking property, has both improved agricultural fertilizer effect
Soil can be improved again.
Compound fertilizer provided by the invention preferably includes aspergillus niger H201 strain culture.With the weight of modified corn core charcoal
On the basis of measuring part, the aspergillus niger H201 strain culture preferably includes 1~6 part, more preferably 2~5 parts, most preferably 4 parts.
The deposit number of the aspergillus niger H201 bacterial strain is CGMCC No.3.17612.In embodiments of the present invention, the aspergillus niger
The preparation method of H201 strain culture preferably includes following steps:
1. aspergillus niger H201 strain activates in PDA culture medium, after generating spore, spore is collected；
2. obtaining aspergillus niger H201 bacterium solution for cultivating in the spore inoculating PDA liquid medium；
3. the aspergillus niger H201 bacterium solution is inoculated into wheat bran fermentation medium top fermentation culture, wait grow a small amount of white bacterium
Mixing mycelia and culture medium when silk, continue fermented and cultured, when culture medium is covered with the reesei spores of green, obtain aspergillus niger H201
Strain culture.
In the present invention, when the activation 5d, spore is generated.The temperature of culture is preferably 30 DEG C, the revolving speed of the culture
For 180rpm.The wheat bran fermentation medium includes wheat bran and peanut shell powder.The wheat bran and the mass ratio of peanut shell powder are 3:
1。
The present invention provides the preparation methods of the slow-release compound fertilizer, comprising the following steps:
A. modified corn core charcoal, chemical fertilizer and bentonite are mixed, obtains mixture；
B. the mixture is pelletized at 80~100 DEG C, obtains slow-release compound fertilizer.
In the present invention, when component further preferably includes aspergillus niger H201 strain culture, by the aspergillus niger H201 bacterium
Strain culture mixes together with modified corn core charcoal.The temperature of the granulation is preferably 90 DEG C.
In the present invention, the aspergillus niger H201 culture has the function of biological regulation, can crack larger molecular organics
It with indissoluble inorganic matter, is absorbed and utilized convenient for crop, improves soil texture, enhanced soil fertility, improve the effect of crop yield.This
The organic fertilizer that sample ferments out just can be safer, and fertilizer efficiency also can be more preferable.
The present invention provides the application of the slow-release compound fertilizer or the slow-release compound fertilizer of the preparation in crop planting.
In the present invention, the crops include corn.The dose of the slow-release compound fertilizer is preferably 50~60kg/
Mu, more preferably 55kg/ mus.It is disposably applied when sowing, later period no longer top dressing.If recommended fertilizer is not achieved, the later period is answered
Appropriate top dressing.When the slow-release compound fertilizer does seed manure, application must be isolated with seed.
Below with reference to embodiment to a kind of modified corn core biology charcoal slow-release fertilizer provided by the invention and preparation method thereof
It is described in detail with application, but they cannot be interpreted as limiting the scope of the present invention.
Embodiment 1
The preparation method of modified corn core charcoal
Using agriculture waste biomass corncob as raw material, after being crushed to≤60 mesh, it is sieved, maize cob meal and oxygen under collection screen
Graphite alkene is sufficiently mixed with mass ratio 200:1, and obtained mixture is first with 100 DEG C of firing 1h, then with 300 DEG C of firing 2h, so
Charcoal raw material are obtained afterwards with 500 DEG C of firing 3h.
Pyrolysis charring is obtained charcoal raw material to be cooled to room temperature, is ground, 10 meshes are crossed, charcoal under collection screen dries
It is dry.By FeCl3The volume of solution and the mass ratio of charcoal particle are 12ml:1g mixing.It is placed in 60 DEG C of environment and stands 2h；
Be placed in baking oven 85 DEG C at a temperature of moisture is evaporated, 250 DEG C of reheating handle 2h, obtain modified biomass charcoal, i.e. graphite oxide
Alkene (GO)/Fe/ charcoal.
The graphene oxide of preparation/Fe/ charcoal porosity is 51.9%, specific surface area 9.72m2/ g, average hole
Diameter is 17.9nm.And directly (compared with above-mentioned preparation method, oxidation is not only added with unmodified biomass charcoal prepared by corncob
Graphene and FeCl3Solution, other schemes are identical) porosity be 47.3%%, specific surface area 4.57m2/ g, average pore size
For 7.02nm.Show that GO/Fe/ biomass carbon has bigger surface area and richer pore structure, is more advantageous to soil
The fixing of nutrient needed for middle plant.
Embodiment 2
The modified biomass charcoal prepared in Example 1 crushes, and crosses 60 meshes, bentonite in powder is broken to≤40 mesh, simultaneously
Granular chemical fertilizer be crushed into 60 meshes.It is modified finally to weigh 39kg urea, 22kg peroxophosphoric acid amine, 20kg potassium chloride, 9kg
The mixing of drum granulating equipment is added in charcoal (dry weight), 5kg aspergillus niger H201 strain culture, 5kg bentonite, mixing
It is granulated.Obtain N:P2O5: K2O=21.9:10:12, N+P2O5+K2The granular product of O >=43.2%.
Field trial setting:
If complex fertilizer is that urine complex fertilizer is urea, peroxophosphoric acid without fertilizer, compound fertilizer, control fertilizer and special fertilizer 4 processing
Amine, potassium chloride and bentonite combination, control fertilizer are not oxidised graphene and the modified corn stover base biology directly prepared of iron
Matter Carbon Materials replace GO/Fe/ biomass carbon, other same special fertilizers of component.Complex fertilizer, control fertilizer N:P2O5:K2O and special fertilizer
Identical, dosage is 60kg/ mus.Each plot area is 25m2, 3 repetitions of every processing.
Field trial is carried out on the typical soil mortar black earth of Qingdao of Shandong province October in June, 2018-.For trying corn
Kind is enlightening card 517.By row application in the side on ridge, seeding corn, seed manure is separated.Thinning after growth 1 month retains growth
The uniform plant of situation, each processing uses consistent way to manage, without top dressing.It is harvested when corn maturation, measurement biology
Amount and grain yield, and carry out species test.Each processing soil is acquired, measurement organic matter, alkali-hydrolyzable nitrogen, rapid available phosphorus and effective potassium contain
Amount.
1 different fertilization of table is constituted to corn yield and the influence of soil physico-chemical property
As can be seen from Table 1, the corn yield and agronomy shape between no fertilizer, compound fertilizer, control fertilizer and special fertilizer 4 processing
There were significant differences.For trying in each soil fertility quality, corn yield composition special fertilizer treatment effect is best, number of plants per unit area, strain fringe
Number, grain number per spike, mass of 1000 kernel are relatively high, illustrate the slow-release compound fertilizer prepared in embodiment 1 compared with simple compound fertilizer and right
According to fertilizer, corn yield composition can be significantly improved, corn yield is improved.Relative to without fertilizer, compound fertilizer and control fertilizer processing, special fertilizer
Corn yield under processing has increased separately 10.3%, 5.58% and 3.74%.
Harvest corn period soil physico-chemical property significant difference under different fertilization, it is wherein organic under special fertilizer processing
Matter, alkali-hydrolyzable nitrogen, rapid available phosphorus and quick-acting potassium content highest.It is handled relative to without fertilizer, organic matter, alkali-hydrolyzable nitrogen, rapid available phosphorus and available potassium
Content has been respectively increased 6.90%, 27.8%, 39.0% and 19.9%；Relative to compound fertilizer processing, it is respectively increased
6.29%, 9.94%, 34.3% and 7.86%；Relative to compound fertilizer processing, it is respectively increased 3.91%, 5.99%, 22.4%
With 4.66%.Illustrate that special fertilizer of the invention can increase soil organic matter content, improve soil physical property, accelerates soil
Matter and energy circulation, improves N,P,K fertilizers utilization rate, improves soil productivity.
Embodiment 3
The preparation method of modified corn core charcoal
Using agriculture waste biomass corncob as raw material, after being crushed to≤60 mesh, it is sieved, maize cob meal and oxygen under collection screen
Graphite alkene is sufficiently mixed with quality 100:1, and obtained mixture is first with 90 DEG C of firing 1h, then with 290 DEG C of firing 2h, then with
510 DEG C of firing 3h obtain charcoal raw material.
Pyrolysis charring is obtained charcoal raw material to be cooled to room temperature, is ground, 50 meshes are crossed, charcoal under collection screen dries
It is dry.
The FeCl of 0.05mol/L is configured in 60 DEG C of water3Solution, the charcoal that drying is added stir and evenly mix, FeCl3It is molten
The volume of liquid and the mass ratio of charcoal particle are 12ml:1g, are placed in 60 DEG C of environment and stand 2h；It is placed in baking oven at 105 DEG C
At a temperature of moisture is evaporated, 350 DEG C of reheating handle 1.5h, obtain modified biomass charcoal, i.e. graphene oxide (GO)/Fe/ biology
Charcoal.
The porosity of modified biomass charcoal is 54.2%, specific surface area 11.3m2/ g, average pore size 23.4nm.And it is straight
It connects and (compared with above-mentioned preparation method, does not only add graphene oxide and FeCl with unmodified biomass charcoal prepared by corncob3It is molten
Liquid, other schemes are identical) porosity be 49.5%, specific surface area 4.83m2/ g, average pore size 9.87nm.Show GO/
Fe/ biomass carbon has bigger surface area and richer pore structure, is more advantageous to the member of nutrition needed for plant in soil
The fixing of element.
Embodiment 4
Modified biomass carbon prepared by embodiment 3 crushes and crosses 60 meshes, bentonite in powder is broken to≤40 mesh, simultaneously
Granular chemical fertilizer be crushed into 60 meshes.It is modified finally to weigh 38kg urea, 20kg peroxophosphoric acid amine, 17kg potassium chloride, 9kg
The mixing of drum granulating equipment is added in charcoal (dry weight), 5kg aspergillus niger H201 strain culture, 5kg bentonite, mixing
It is granulated.Obtain N:P2O5: K2O=21.1::9.2:10.2, N+P2O5+K2The granular product of O >=40.48%.
Field trial setting:
If complex fertilizer is that urine complex fertilizer is urea, peroxophosphoric acid without fertilizer, compound fertilizer, control fertilizer and special fertilizer 4 processing
Amine, potassium chloride and bentonite combination, control fertilizer are not oxidised graphene and the modified corn stover base biology directly prepared of iron
Matter Carbon Materials replace GO/Fe/ biomass carbon, other same special fertilizers of component.The N:P of complex fertilizer, control fertilizer2O5:K2O with it is dedicated
Fertilizer is identical, and dosage is 60kg/ mus.Each plot area is 25m2, 3 repetitions of every processing.
Field trial is carried out on the typical soil mortar black earth of Qingdao of Shandong province October in June, 2018-.For trying corn
Kind is enlightening card 517.By row application in the side on ridge, seeding corn, seed manure is separated.Thinning after growth 1 month retains growth
The uniform plant of situation, each processing uses consistent way to manage, without top dressing.It is harvested when corn maturation, measurement biology
Amount and grain yield, and carry out species test.Each processing soil is acquired, measurement organic matter, alkali-hydrolyzable nitrogen, rapid available phosphorus and effective potassium contain
Amount.
2 different fertilization of table is constituted to corn yield and the influence of soil physico-chemical property
As can be seen from Table 2, the corn yield and agronomy shape between no fertilizer, compound fertilizer, control fertilizer and special fertilizer 4 processing
There were significant differences.For trying in each soil fertility quality, corn yield composition special fertilizer treatment effect is best, number of plants per unit area, strain fringe
Number, grain number per spike, mass of 1000 kernel are relatively high, illustrate the special fertilizer prepared in embodiment 2 application compared to simple compound fertilizer and
Control fertilizer can significantly improve corn yield composition, improve corn yield.It is handled relative to without fertilizer, compound fertilizer and control fertilizer, it is dedicated
Corn yield under fertilizer processing has increased separately 10.4%, 7.43% and 4.40%.
Harvest corn period soil physico-chemical property significant difference under different fertilization, it is wherein organic under special fertilizer processing
Matter, alkali-hydrolyzable nitrogen, rapid available phosphorus and quick-acting potassium content highest.It is handled relative to without fertilizer, organic matter, alkali-hydrolyzable nitrogen, rapid available phosphorus and available potassium
Content has been respectively increased 8.00%, 27.1%, 44.3% and 27.7%；Relative to compound fertilizer processing, it is respectively increased
5.58%, 8.52%, 40.8% and 13.5%；Relative to control fertilizer processing, it is respectively increased 3.27%, 7.20%, 15.9%
With 5.86%.Illustrate that special fertilizer of the invention can increase soil organic matter content, improve soil physical property, accelerates soil
Matter and energy circulation, improves N,P,K fertilizers utilization rate, improves soil productivity.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of modified corn core charcoal base slow-release compound fertilizer, which is characterized in that comprise the following components in parts by weight:
5~23.7 parts of modified corn core charcoals, 71.3~82 parts of chemical fertilizer and 5~8 parts of bentonites；
The preparation method of the modified corn core charcoal, comprising the following steps:
1) corncob ground-slag and graphene oxide are mixed, obtains mixture；
2) by the mixture successively in 90~110 DEG C of 55~65min of firing, 290~310 DEG C of 1.8~2.2h of firing and
490~510 DEG C of 2.5~3.5h of firing, obtain charcoal raw material；
3) the charcoal raw material are crushed, sieving obtains charcoal particle；
4) by the charcoal particle and FeCl3Solution, mixing, 58~62 DEG C of standings go moisture removal, 250~350 DEG C of heat treatments
1.5~2h obtains modified corn core charcoal.
2. slow-release compound fertilizer according to claim 1, which is characterized in that the volume of the corncob ground-slag and graphene oxide
Than for 100~200:1.
3. slow-release compound fertilizer according to claim 1, which is characterized in that the mixture successively in 100 DEG C of firing 60min,
In 300 DEG C of firing 2h and in 500 DEG C of firing 3h.
4. slow-release compound fertilizer according to claim 1, which is characterized in that the FeCl3The volume of solution and charcoal particle
Mass ratio is 10~12ml:1g；The FeCl3The concentration of solution is 0.05mol/L.
5. slow-release compound fertilizer according to claim 1, which is characterized in that comprise the following components in parts by weight: 10~20 parts change
Property corncob charcoal, 60~70 parts of chemical fertilizer and 6~7 parts of bentonites.
6. according to claim 1 or 5 slow-release compound fertilizers, which is characterized in that each component accounts for described slow in the chemical fertilizer
It is as follows to release compound fertilizer's mass percentage concentration: urea 35.0%~40.2%, ammonium superphosphate 19.6%~21.8%, potassium chloride
16.7%~20.0%.
7. slow-release compound fertilizer described in any one according to claim 1~5, which is characterized in that with modified corn core charcoal
It further include 1~6 part of aspergillus niger H201 strain culture on the basis of parts by weight；The deposit number of the aspergillus niger H201 bacterial strain is
CGMCC No.3.17612。
8. the preparation method of slow-release compound fertilizer described in claim 1~7 any one, which comprises the following steps:
A. modified corn core charcoal, chemical fertilizer and bentonite are mixed, obtains mixture；
B. the mixture is pelletized at 80~100 DEG C, obtains slow-release compound fertilizer.
9. preparation method according to claim 8, which is characterized in that when component further includes aspergillus niger H201 strain culture
When, the aspergillus niger H201 strain culture is mixed together with modified corn core charcoal.
10. slow-release compound fertilizer described in claim 1~7 any one or the slow-release compound fertilizer of the preparation of claim 8 or 9 exist
Application in crop planting.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110330979A (en) * | 2019-07-10 | 2019-10-15 | 青岛农业大学 | A kind of preparation method of modification biological charcoal, modification biological charcoal, composite material and soil-repairing agent |
| CN112126437A (en) * | 2020-08-21 | 2020-12-25 | 浙江博世华环保科技有限公司 | Composite modified biomass charcoal stabilizer and preparation method and application thereof |
| CN112430150A (en) * | 2020-11-26 | 2021-03-02 | 郑州师范学院 | Bio-organic fertilizer for promoting flower growth and preparation method thereof |
| CN112501246A (en) * | 2020-12-04 | 2021-03-16 | 辽宁工程技术大学 | Research method for influence of biochar, bentonite and organic fertilizer on activity of aeolian sandy soil enzyme |
| CN112759475A (en) * | 2021-03-05 | 2021-05-07 | 湖南华田盛德生物科技有限公司 | Environment-friendly slow-release compound fertilizer based on humic acid and preparation method thereof |
| CN113816798A (en) * | 2021-10-11 | 2021-12-21 | 思南五盛肥业有限责任公司 | Biochar slow-release fertilizer special for tobacco planting and preparation method thereof |
| CN114702351A (en) * | 2022-04-18 | 2022-07-05 | 香港科技大学 | Modified biochar and preparation method and application thereof |
-
2019
- 2019-04-12 CN CN201910294900.4A patent/CN109988044A/en not_active Withdrawn
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110330979A (en) * | 2019-07-10 | 2019-10-15 | 青岛农业大学 | A kind of preparation method of modification biological charcoal, modification biological charcoal, composite material and soil-repairing agent |
| CN112126437A (en) * | 2020-08-21 | 2020-12-25 | 浙江博世华环保科技有限公司 | Composite modified biomass charcoal stabilizer and preparation method and application thereof |
| CN112430150A (en) * | 2020-11-26 | 2021-03-02 | 郑州师范学院 | Bio-organic fertilizer for promoting flower growth and preparation method thereof |
| CN112501246A (en) * | 2020-12-04 | 2021-03-16 | 辽宁工程技术大学 | Research method for influence of biochar, bentonite and organic fertilizer on activity of aeolian sandy soil enzyme |
| CN112759475A (en) * | 2021-03-05 | 2021-05-07 | 湖南华田盛德生物科技有限公司 | Environment-friendly slow-release compound fertilizer based on humic acid and preparation method thereof |
| CN113816798A (en) * | 2021-10-11 | 2021-12-21 | 思南五盛肥业有限责任公司 | Biochar slow-release fertilizer special for tobacco planting and preparation method thereof |
| CN114702351A (en) * | 2022-04-18 | 2022-07-05 | 香港科技大学 | Modified biochar and preparation method and application thereof |
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