CN106590684A - Saline alkali soil restoration agent and preparation method - Google Patents
Saline alkali soil restoration agent and preparation method Download PDFInfo
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- CN106590684A CN106590684A CN201611244966.5A CN201611244966A CN106590684A CN 106590684 A CN106590684 A CN 106590684A CN 201611244966 A CN201611244966 A CN 201611244966A CN 106590684 A CN106590684 A CN 106590684A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K17/00—Soil-conditioning materials or soil-stabilising materials
- C09K17/40—Soil-conditioning materials or soil-stabilising materials containing mixtures of inorganic and organic compounds
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2109/00—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE pH regulation
Abstract
The invention discloses a saline alkali soil restoration agent. The agent is prepared by compounding organic-inorganic nanocomposite and biological agent. The agent comprises, by weight, 1-3 parts of mixture powder of calcium sulfate and sodium polyacrylate mixture powder, 3-5 parts of aminated attapulgite powder, and 1-3 parts of bacillus subtilis-biochar powder. The present invention further discloses a preparation method of the saline alkali soil restoration agent. The preparation method comprises the steps of acquiring a calcium polyacrylate solution, acquiring the calcium sulfate and sodium polyacrylate mixture powder, acquiring the aminated attapulgite powder, acquiring the bacillus subtilis-biochar powder, preparing the saline alkali soil restoration agent and spreading the agent uniformly on soil surface. The saline alkali soil restoration agent has the advantages of being obvious in moisture holding, fertilizer holding and ion exchange, capable of increasing rate of emergence and yield and the like. The preparation method has the advantages of being low in cost, rich in material, friendly to environment, high in efficiency and the like.
Description
Technical field
The present invention relates to planting technology field, more particularly to a kind of salt-soda soil renovation agent and preparation method thereof.
Background technology
Currently, the salinization of soil is the major obstacle factor for restricting China's agricultural development.China can transform salt-soda soil and there are about 1
Hundred million mu, if not increasing improvement and prevention dynamics, it will directly affect China's agricultural productivity and grain security.Therefore, it is saline and alkaline
Ground improvement, fully excavates salt-soda soil productive potentialities, has grand strategy for agricultural sustainable development, Ensuring Food Safety is promoted
Meaning.
The salinization of soil is distributed mainly on arid, semiarid or coastal region, and its main cause for being formed is：Rainfall is few,
Evaporation is strong, and amount of salt in groundwater is big, and water level is higher, thus the easy table of underground water is poly-, causes the salinization of soil.At present, it is saline and alkaline
Ground modification method mainly has Physical (site preparation and water resources industry：CN200710179269.0, CN201010256362.9 etc.), it is micro-
Bioanalysis (CN201010131080.6, CN201310114401.5 etc.) and chemical method (CN201110095321.0,
CN200610017147.7, CN03138949.X etc.) etc..Although these measures under certain condition effectively, each have office
It is sex-limited：Water conservancy law and chemical amendments expend a large amount of manpower and materials, and the time-consuming longer and climate condition of phytoremediation is limited, because
This these method is difficult to large scale application, it is impossible to meet current China's agricultural development needs.
Therefore, in the urgent need to a kind of low cost of research and development, efficiently, easily salt-soda soil recovery technique.
The content of the invention
The technical problem to be solved is to provide one kind by Organic-inorganic composite nano material and bacteria agent
Compounding is formed, low cost, efficiently, easily salt-soda soil renovation agent and preparation method thereof.
To solve above-mentioned technical problem, the present invention provides a kind of salt-soda soil renovation agent, by Organic-inorganic composite nano material
Form with bacteria agent compounding, the parts by weight of its constitutive material are：Calcium sulfate and Sodium Polyacrylate mix powder 1-3 parts,
Amination attapulgite powder 3-5 part, bacillus subtilis-charcoal powder 1-3 part.
Preferably, the calcium sulfate and Sodium Polyacrylate mix powder are 200-400 mesh powder, by calcium polyacrylate (CPA) and
Sodium sulphate reaction is obtained, and wherein sodium sulphate is 200-400 mesh.
Preferably, the calcium polyacrylate (CPA) is obtained by calcium carbonate and polyacrylic acid reaction, and wherein calcium carbonate is 600-1000
Mesh.
Preferably, the amination attapulgite powder is obtained by polyethyleneimine and attapulgite reaction, wherein poly- second
Alkene imines molecular weight is 5000-6000, and attapulgite is 200-400 mesh.
Preferably, the bacillus subtilis-charcoal powder for 200-400 mesh powder, by being added with charcoal
Bacillus subtilis is obtained.
The invention also discloses a kind of preparation method using above-mentioned salt-soda soil renovation agent, comprises the steps：
(1)：20-40g calcium carbonate is added in the 0.5-1g/L polyacrylic acid of 1-2L, at a temperature of 30-50 DEG C with
100-300rpm rotating speeds stir 50-70min, by reacting CaCO3+2(CH2CH) nCOOH=[(CH2CH)nCOO]2Ca+H2O+
CO2Polyacrylic acid calcium solution is obtained, wherein calcium carbonate is 600-1000 mesh；
(2)：20-40g sodium sulphate is added in resulting polyacrylic acid calcium solution in step (1), in 20-50 DEG C of temperature
Under with 100-300rpm rotating speeds stir 60-120min, by react [(CH2CH)nCOO]2Ca+NaSO4=CaSO4+(CH2CH)
nCOO]2Na obtains calcium sulfate and Sodium Polyacrylate suspension, 10-15h is then dried at a temperature of 60-100 DEG C and grinds prepared
Calcium sulfate and Sodium Polyacrylate mix powder, wherein sodium sulphate are 200-400 mesh, calcium sulfate and Sodium Polyacrylate mixture powder
End is 200-400 mesh；
(3)：1-3g/L polyethyleneimines and 10-20g/L attapulgites are added in the aqueous solution, at a temperature of 30-50 DEG C
30-50min is stirred with 100-300rpm rotating speeds, 10-15h is then dried at a temperature of 60-10 DEG C and prepared 200-400 mesh is ground
Amination attapulgite powder；
(4)：Bacillus subtilis is cultivated in LBG culture mediums, then adds charcoal according to the concentration of 50-60g/L
In being added to bacterium solution, air-dry under normal temperature, and grinding obtains the bacillus subtilis-charcoal powder of 200-400 mesh；
(5)：The raw material that step (2) (3) (4) is obtained is according to above-mentioned parts by weight, i.e. (1-3)：(3-5)：(1-
3), uniform mixing, is obtained salt-soda soil renovation agent；
(6)：The salt-soda soil renovation agent obtained in step (5) is uniformly spread fertilizer over the fields in upper soll layer according to the amount of 5-20kg/ mus,
Repair for the salt-soda soil before arable land.
Preferably, the polyacrylic molecular weight 5000-7000, the molecular weight 5000-6000 of polyethyleneimine.
Preferably, the attapulgite is the 200-400 mesh attapulgites of colloid.
Preferably, the formula of LBG culture mediums is in the step (4)：0.5% glucose, 1% peptone, 0.5% yeast
Cream, 1% sodium chloride.
Preferably, condition of culture of step (4) bacillus subtilis in LBG culture mediums is：Inoculum concentration 1%-
2%, rotating speed 180-200rpm, incubation time 24-36h.
It is an advantage of the current invention that：There is provided a kind of salt-soda soil renovation agent and preparation method thereof, the renovation agent be it is a kind of by
The Biological nanocomposite that Organic-inorganic composite nano material is compounded with bacteria agent, with significant water conservation, fertilizer conservation
And ion exchange, effectively salt reduction alkali can be pressed, improve root Tiny ecosystem, promote root system development, salt tolerance of crops is improved,
Increase emergence rate, improve the effect such as yield so as to play；The method has compared with the conventional method low cost, abundant raw material, ring
Border is friendly, it is efficient the advantages of, with larger market potential.
Description of the drawings
Fig. 1 is a kind of flow chart of the preparation method of salt-soda soil renovation agent that embodiment of the present invention 4-6 is provided.
Specific embodiment
Embodiments of the invention are elaborated below, the present embodiment is carried out under premised on technical solution of the present invention
Implement, give detailed embodiment and specific operating process, but protection scope of the present invention is not limited to following enforcements
Example.
Embodiment 1
A kind of salt-soda soil renovation agent, is formed, its constitutive material by Organic-inorganic composite nano material with bacteria agent compounding
Parts by weight be：1 part of calcium sulfate and Sodium Polyacrylate mix powder, 3 parts of amination attapulgite powder, bacillus subtilis
1 part of bacterium-charcoal powder.
Wherein calcium sulfate and Sodium Polyacrylate mix powder are 200 mesh powder, by calcium polyacrylate (CPA) and sodium sulphate (200
Mesh) react prepared；Calcium polyacrylate (CPA) is obtained by calcium carbonate (600 mesh) and polyacrylic acid reaction；Amination attapulgite powder by
Polyethyleneimine (molecular weight is 5000) and attapulgite (200 mesh) reaction are obtained；Bacillus subtilis-charcoal powder is
The powder of 200 mesh, is obtained by the bacillus subtilis for being added with charcoal.
Embodiment 2
A kind of salt-soda soil renovation agent, is formed, its constitutive material by Organic-inorganic composite nano material with bacteria agent compounding
Parts by weight be：3 parts of calcium sulfate and Sodium Polyacrylate mix powder, 5 parts of amination attapulgite powder, bacillus subtilis
3 parts of bacterium-charcoal powder.
Wherein calcium sulfate and Sodium Polyacrylate mix powder are 400 mesh powder, by calcium polyacrylate (CPA) and sodium sulphate (400
Mesh) react prepared；Calcium polyacrylate (CPA) is obtained by calcium carbonate (1000 mesh) and polyacrylic acid reaction；Amination attapulgite powder by
Polyethyleneimine (molecular weight is 6000) and attapulgite (400 mesh) reaction are obtained；Bacillus subtilis-charcoal powder is
The powder of 400 mesh, is obtained by the bacillus subtilis for being added with charcoal.
Embodiment 3
A kind of salt-soda soil renovation agent, is formed, its constitutive material by Organic-inorganic composite nano material with bacteria agent compounding
Parts by weight be：2 parts of calcium sulfate and Sodium Polyacrylate mix powder, 4 parts of amination attapulgite powder, bacillus subtilis
2 parts of bacterium-charcoal powder.
Wherein calcium sulfate and Sodium Polyacrylate mix powder are 300 mesh powder, by calcium polyacrylate (CPA) and sodium sulphate (300
Mesh) react prepared；Calcium polyacrylate (CPA) is obtained by calcium carbonate (800 mesh) and polyacrylic acid reaction；Amination attapulgite powder by
Polyethyleneimine (molecular weight is 5500) and attapulgite (300 mesh) reaction are obtained；Bacillus subtilis-charcoal powder is
The powder of 300 mesh, is obtained by the bacillus subtilis for being added with charcoal.
Embodiment 4
The preparation method of salt-soda soil renovation agent in a kind of use embodiment 1, as shown in figure 1, comprising the steps：
(1)：20g calcium carbonate is added in the 0.5g/L polyacrylic acid (molecular weight 5000) of 1L, at a temperature of 30 DEG C with
100rpm rotating speeds stir 50min, by reacting CaCO3+2(CH2CH) nCOOH=[(CH2CH)nCOO]2Ca+H2O+CO2Gathered
Calcium acrylate solution, wherein calcium carbonate are 600 mesh；
(2)：To in step (1) in resulting polyacrylic acid calcium solution add 20g sodium sulphate, at a temperature of 20 DEG C with
100rpm rotating speeds stir 60min, by reacting [(CH2CH)nCOO]2Ca+NaSO4=CaSO4+(CH2CH)nCOO]2Na obtains sulphur
Sour calcium and Sodium Polyacrylate suspension, 10h are then dried at a temperature of 60 DEG C and calcium sulfate is obtained for grindings and Sodium Polyacrylate is mixed
Compound powder, wherein sodium sulphate are 200 mesh, and calcium sulfate and Sodium Polyacrylate mix powder are 200 mesh；
(3)：1g/L polyethyleneimines (molecular weight 5000) and 10g/L attapulgites (colloid, 200 mesh) are added water-soluble
In liquid, 30min is stirred with 100rpm rotating speeds at a temperature of 30 DEG C, 10h is then dried at a temperature of 60 DEG C and prepared 200 mesh are ground
Amination attapulgite powder；
(4)：By bacillus subtilis in LBG culture mediums (0.5% glucose, 1% peptone, 0.5% yeast extract, 1% chlorine
Change sodium) in culture (inoculum concentration 1%-2%, rotating speed 180rpm, incubation time 24h), then by charcoal according to 50g/L concentration
In being added to bacterium solution, air-dry under normal temperature, and grinding obtains the bacillus subtilis-charcoal powder of 200 mesh；
(5)：The raw material that step (2) (3) (4) is obtained is according to above-mentioned parts by weight, i.e., 1：3：1, uniform mixing, system
Obtain salt-soda soil renovation agent；
(6)：The salt-soda soil renovation agent obtained in step (5) is uniformly spread fertilizer over the fields in upper soll layer according to the amount of 5kg/ mus, is used
Repair in salt-soda soil before arable land.
Embodiment 5
The preparation method of salt-soda soil renovation agent in a kind of use embodiment 2, as shown in figure 1, comprising the steps：
(1)：40g calcium carbonate is added in the 1g/L polyacrylic acid (molecular weight 7000) of 2L, at a temperature of 50 DEG C with
300rpm rotating speeds stir 70min, by reacting CaCO3+2(CH2CH) nCOOH=[(CH2CH)nCOO]2Ca+H2O+CO2Gathered
Calcium acrylate solution, wherein calcium carbonate are 1000 mesh；
(2)：To in step (1) in resulting polyacrylic acid calcium solution add 40g sodium sulphate, at a temperature of 50 DEG C with
300rpm rotating speeds stir 120min, by reacting [(CH2CH)nCOO]2Ca+NaSO4=CaSO4+(CH2CH)nCOO]2Na is obtained
Calcium sulfate and Sodium Polyacrylate suspension, 15h is then dried at a temperature of 100 DEG C and prepared calcium sulfate and Sodium Polyacrylate is ground
Mix powder, wherein sodium sulphate are 400 mesh, and calcium sulfate and Sodium Polyacrylate mix powder are 400 mesh；
(3)：3g/L polyethyleneimines (molecular weight 6000) and 20g/L attapulgites (colloid, 400 mesh) are added water-soluble
In liquid, 50min is stirred with 300rpm rotating speeds at a temperature of 50 DEG C, 15h is then dried at a temperature of 100 DEG C and grinding is obtained 400
Purpose amination attapulgite powder；
(4)：By bacillus subtilis in LBG culture mediums (0.5% glucose, 1% peptone, 0.5% yeast extract, 1% chlorine
Change sodium) in culture (inoculum concentration 1%-2%, rotating speed 200rpm, incubation time 36h), then by charcoal according to 60g/L concentration
In being added to bacterium solution, air-dry under normal temperature, and grinding obtains the bacillus subtilis-charcoal powder of 400 mesh；
(5)：The raw material that step (2) (3) (4) is obtained is according to above-mentioned parts by weight, i.e., 3：5：3, uniform mixing, system
Obtain salt-soda soil renovation agent；
(6)：The salt-soda soil renovation agent obtained in step (5) is uniformly spread fertilizer over the fields in upper soll layer according to the amount of 20kg/ mus, is used
Repair in salt-soda soil before arable land.
Embodiment 6
The preparation method of salt-soda soil renovation agent in a kind of use embodiment 3, as shown in figure 1, comprising the steps：
(1)：30g calcium carbonate is added in the 0.8g/L polyacrylic acid (molecular weight 6000) of 1.5L, at a temperature of 40 DEG C
60min is stirred with 200rpm rotating speeds, by reacting CaCO3+2(CH2CH) nCOOH=[(CH2CH)nCOO]2Ca+H2O+CO2Obtain
Polyacrylic acid calcium solution, wherein calcium carbonate are 800 mesh；
(2)：To in step (1) in resulting polyacrylic acid calcium solution add 30g sodium sulphate, at a temperature of 35 DEG C with
200rpm rotating speeds stir 100min, by reacting [(CH2CH)nCOO]2Ca+NaSO4=CaSO4+(CH2CH)nCOO]2Na is obtained
Calcium sulfate and Sodium Polyacrylate suspension, 13h is then dried at a temperature of 80 DEG C and prepared calcium sulfate and Sodium Polyacrylate is ground
Mix powder, wherein sodium sulphate are 300 mesh, and calcium sulfate and Sodium Polyacrylate mix powder are 300 mesh；
(3)：1-3g/L polyethyleneimines (molecular weight 5500) and 10-20g/L attapulgites (colloid, 300 mesh) are added
In entering the aqueous solution, 40min is stirred with 200rpm rotating speeds at a temperature of 40 DEG C, 13h and the system of grinding then are dried at a temperature of 80 DEG C
Obtain the amination attapulgite powder of 300 mesh；
(4)：By bacillus subtilis in LBG culture mediums (0.5% glucose, 1% peptone, 0.5% yeast extract, 1% chlorine
Change sodium) in culture (inoculum concentration 1%-2%, rotating speed 190rpm, incubation time 30h), then by charcoal according to 55g/L concentration
In being added to bacterium solution, air-dry under normal temperature, and grinding obtains the bacillus subtilis-charcoal powder of 300 mesh；
(5)：The raw material that step (2) (3) (4) is obtained is according to above-mentioned parts by weight, i.e., 2：4：2, uniform mixing, system
Obtain salt-soda soil renovation agent；
(6)：The salt-soda soil renovation agent obtained in step (5) is uniformly spread fertilizer over the fields in upper soll layer according to the amount of 12kg/ mus, is used
Repair in salt-soda soil before arable land.
Presently preferred embodiments of the present invention is the foregoing is only, not to limit the present invention, all essences in the present invention
Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.
Claims (10)
1. a kind of salt-soda soil renovation agent, it is characterised in that formed with bacteria agent compounding by Organic-inorganic composite nano material,
The parts by weight of its constitutive material are：Calcium sulfate and Sodium Polyacrylate mix powder 1-3 parts, amination attapulgite powder 3-
5 parts, bacillus subtilis-charcoal powder 1-3 part.
2. a kind of salt-soda soil renovation agent according to claim 1, it is characterised in that the calcium sulfate and Sodium Polyacrylate are mixed
Compound powder is 200-400 mesh powder, is obtained by calcium polyacrylate (CPA) and sodium sulphate reaction, and wherein sodium sulphate is 200-400 mesh.
3. a kind of salt-soda soil renovation agent according to claim 2, it is characterised in that the calcium polyacrylate (CPA) by calcium carbonate and
Polyacrylic acid reaction is obtained, and wherein calcium carbonate is 600-1000 mesh.
4. a kind of salt-soda soil renovation agent according to claim 1, it is characterised in that the amination attapulgite powder by
Polyethyleneimine and attapulgite reaction are obtained, and wherein polyethyleneimine molecular weight is 5000-6000, and attapulgite is 200-
400 mesh.
5. a kind of salt-soda soil renovation agent according to claim 1, it is characterised in that the bacillus subtilis-charcoal
Powder is the powder of 200-400 mesh, is obtained by the bacillus subtilis for being added with charcoal.
6. a kind of preparation method of the salt-soda soil renovation agent using as described in any one of claim 1-5, it is characterised in that include
Following steps：
(1)：20-40g calcium carbonate is added in the 0.5-1g/L polyacrylic acid of 1-2L, with 100- at a temperature of 30-50 DEG C
300rpm rotating speeds stir 50-70min, by reacting CaCO3+2(CH2CH) nCOOH=[(CH2CH)nCOO]2Ca+H2O+CO2
To polyacrylic acid calcium solution, wherein calcium carbonate is 600-1000 mesh；
(2)：To in step (1) in resulting polyacrylic acid calcium solution add 20-40g sodium sulphate, at a temperature of 20-50 DEG C with
100-300rpm rotating speeds stir 60-120min, by reacting [(CH2CH)nCOO]2Ca+NaSO4=CaSO4+(CH2CH)nCOO]2Na obtains calcium sulfate and Sodium Polyacrylate suspension, and 10-15h is then dried at a temperature of 60-100 DEG C and prepared sulfuric acid is ground
Calcium and Sodium Polyacrylate mix powder, wherein sodium sulphate are 200-400 mesh, and calcium sulfate and Sodium Polyacrylate mix powder are
200-400 mesh；
(3)：1-3g/L polyethyleneimines and 10-20g/L attapulgites are added in the aqueous solution, at a temperature of 30-50 DEG C with
100-300rpm rotating speeds stir 30-50min, and 10-15h is then dried at a temperature of 60-10 DEG C and prepared 200-400 purposes are ground
Amination attapulgite powder；
(4)：Bacillus subtilis is cultivated in LBG culture mediums, is then added to charcoal according to the concentration of 50-60g/L
In bacterium solution, air-dry under normal temperature, and grinding obtains the bacillus subtilis-charcoal powder of 200-400 mesh；
(5)：The raw material that step (2) (3) (4) is obtained is according to above-mentioned parts by weight, i.e. (1-3)：(3-5)：(1-3),
Even mixing, is obtained salt-soda soil renovation agent；
(6)：The salt-soda soil renovation agent obtained in step (5) is uniformly spread fertilizer over the fields in upper soll layer according to the amount of 5-20kg/ mus, is used for
Repair in salt-soda soil before arable land.
7. a kind of salt-soda soil renovation agent according to claim 6 and preparation method thereof, it is characterised in that the polyacrylic acid
Molecular weight 5000-7000, the molecular weight 5000-6000 of polyethyleneimine.
8. a kind of salt-soda soil renovation agent according to claim 6 and preparation method thereof, it is characterised in that the attapulgite
For the 200-400 mesh attapulgites of colloid.
9. a kind of salt-soda soil renovation agent according to claim 6 and preparation method thereof, it is characterised in that the step (4)
The formula of middle LBG culture mediums is：0.5% glucose, 1% peptone, 0.5% yeast extract, 1% sodium chloride.
10. a kind of salt-soda soil renovation agent according to claim 6 and preparation method thereof, it is characterised in that the step (4)
Condition of culture of the bacillus subtilis in LBG culture mediums be：Inoculum concentration 1%-2%, rotating speed 180-200rpm, incubation time
24-36h。
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107987844A (en) * | 2017-11-29 | 2018-05-04 | 河海大学 | A kind of microorganism formulation of coastal reclamation area strongly salined soil quick desalination and preparation method thereof |
| CN108484307A (en) * | 2018-06-29 | 2018-09-04 | 望江县东方米业有限责任公司 | A kind of rice high-efficiency sustained-release organic fertilizer |
| CN108998045A (en) * | 2018-07-10 | 2018-12-14 | 长沙浩然医疗科技有限公司 | Concave convex rod soil conditioner and preparation method thereof |
| CN110819357A (en) * | 2019-11-08 | 2020-02-21 | 东华大学 | Acidic soil remediation agent and preparation and application thereof |
| CN111647527A (en) * | 2020-05-21 | 2020-09-11 | 浙江工业大学 | Method for improving saline-alkali soil and preserving fertilizer by utilizing bacillus subtilis |
| CN112048308A (en) * | 2020-09-09 | 2020-12-08 | 东华大学 | Saline-alkali soil restoration agent, preparation method and application |
| CN112293204A (en) * | 2020-11-12 | 2021-02-02 | 湖南省兆祥生态农业科技有限公司 | Environment-friendly planting matrix for nursery stocks |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107987844A (en) * | 2017-11-29 | 2018-05-04 | 河海大学 | A kind of microorganism formulation of coastal reclamation area strongly salined soil quick desalination and preparation method thereof |
| CN108484307A (en) * | 2018-06-29 | 2018-09-04 | 望江县东方米业有限责任公司 | A kind of rice high-efficiency sustained-release organic fertilizer |
| CN108998045A (en) * | 2018-07-10 | 2018-12-14 | 长沙浩然医疗科技有限公司 | Concave convex rod soil conditioner and preparation method thereof |
| CN110819357A (en) * | 2019-11-08 | 2020-02-21 | 东华大学 | Acidic soil remediation agent and preparation and application thereof |
| CN111647527A (en) * | 2020-05-21 | 2020-09-11 | 浙江工业大学 | Method for improving saline-alkali soil and preserving fertilizer by utilizing bacillus subtilis |
| CN111647527B (en) * | 2020-05-21 | 2023-01-06 | 浙江工业大学 | Method for improving saline-alkali soil and preserving fertilizer by using bacillus subtilis |
| CN112048308A (en) * | 2020-09-09 | 2020-12-08 | 东华大学 | Saline-alkali soil restoration agent, preparation method and application |
| CN112293204A (en) * | 2020-11-12 | 2021-02-02 | 湖南省兆祥生态农业科技有限公司 | Environment-friendly planting matrix for nursery stocks |
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