CN108911862A - A kind of new soil microorganism modifying agent and preparation method thereof - Google Patents
A kind of new soil microorganism modifying agent and preparation method thereof Download PDFInfo
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- CN108911862A CN108911862A CN201810928309.5A CN201810928309A CN108911862A CN 108911862 A CN108911862 A CN 108911862A CN 201810928309 A CN201810928309 A CN 201810928309A CN 108911862 A CN108911862 A CN 108911862A
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B7/00—Fertilisers based essentially on alkali or ammonium orthophosphates
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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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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pest Control & Pesticides (AREA)
- Soil Sciences (AREA)
- Fertilizers (AREA)
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
Abstract
The invention discloses a kind of new soil microorganism modifying agents and preparation method thereof, including following raw material：Attapulgite, weathered coal, edible fungi residue, rice husk, earthworm manure, sawdust, white lime, active carbon, molasses, wheat bran, dregs of beans, complex microbial inoculum, microelement, the complex microbial inoculum are made of jelly bacillus, azotobacter chroococcum, bacillus laterosporus, bacillus amyloliquefaciens, saccharomycete and lactobacillus plantarum.The formula of edaphon modifying agent provided by the invention is reasonable, has effects that Soluble phosphorus, Potassium release and fixed nitrogen, remarkably promotes plant for the sorption enhanced of N P and K；The gas permeability and water-retaining property for increasing soil reduce the incidence of pest and disease damage, reduce the content of beary metal in soil and improve the acid-base property of soil, promote plant growth and development.Through testing, the yield of crops can be obviously improved using edaphon modifying agent disclosed by the invention, reduces its pest and disease damage incidence, shortens its growth cycle.
Description
Technical field
The invention belongs to organic fertilizer technology, and in particular to a kind of new soil microorganism modifying agent and its preparation side
Method.
Background technique
It is unreasonable that the traditional agriculture plantation of China is faced with Fertilizer application, and the light organic fertilizer of kind chemical fertilizer and microbial manure are long
Phase unreasonably largely leads to problems such as soil fertility decline and disease-resistant crops that can record decline, the use of chemical fertilizer using chemical fertilizer
Measuring maximum is nitrogenous fertilizer, and unreasonable use causes the nitrate content in agricultural product excessively high, does not meet agricultural development ecology
Requirement.
Microbial manure is also known as bacterial manure, is mixed with certain carrier by function bacterium and is made, and utilizes microorganism itself
Vital movement generates the substance for promoting plant growth, or converts the utilizable object of crop for the minerals of indissoluble in soil
Matter improves the disease resistance of crop, microbial manure is mesh to increase fertilizer efficiency, or the activity of the related disease-resistant enzyme of induction crop
The preceding effective means for carrying out soil improvement.
Summary of the invention
The purpose of the present invention is to provide a kind of new soil microorganism modifying agent and preparation method thereof, the micro- life of soil
Object modifying agent has the function of Soluble phosphorus, Potassium release and fixed nitrogen, promotes plant that nitrogen potassium, phosphorus in soil is absorbed and utilized, and produce are made in raising
Amount and quality；Improve soil texture；It induces crop to generate superoxide dismutase etc. and improves crop anti-adversity, improve root system of plant
Growth and development ability.
The technical scheme adopted by the invention is as follows：
A kind of edaphon modifying agent, the raw material including following parts by weight：10~25 parts of attapulgite, weathered coal 4~
13 parts, 22~41 parts of edible fungi residue, 6~17 parts of rice husk, 18~36 parts of earthworm manure, 14~27 parts of sawdust, white lime 3~12
It is part, 3~12 parts of active carbon, 3~10 parts of complex microbial inoculum, 3~12 parts of molasses, 4~16 parts of wheat bran, 6~15 parts of dregs of beans, micro-
0.5~3.8 part of secondary element.
Further, it is preferable to be the raw material for including following parts by weight：13~20 parts of attapulgite, 6~10 parts of weathered coal, food
With 24~36 parts of bacterium bacteria residue, 8~14 parts of rice husk, 23~31 parts of earthworm manure, 18~22 parts of sawdust, 5~10 parts of white lime, activity
7~11 parts of charcoal, 5~8 parts of complex microbial inoculum, 6~10 parts of molasses, 7~12 parts of wheat bran, 9~12 parts of dregs of beans, microelement
0.8~2.9 part.
Further, the raw material of following parts by weight is preferably comprised：17 parts of attapulgite, 8 parts of weathered coal, edible fungi
28 parts of slag, 12 parts of rice husk, 27 parts of earthworm manure, 19 parts of sawdust, 8 parts of white lime, 9 parts of active carbon, 6 parts of complex microbial inoculum,
8 parts of molasses, 10 parts of wheat bran, 11 parts of dregs of beans, 1.7 parts of microelement.
The complex microbial inoculum includes the microbial inoculum of following parts by weight：12~18 parts of jelly bacillus, the brown fixed nitrogen of circle
5~12 parts of bacterium, 9~14 parts of bacillus laterosporus, 12~20 parts of bacillus amyloliquefaciens, 8~16 parts of saccharomycete, lactobacillus plantarum
10~22 parts.
Further, the complex microbial inoculum preferably comprises the microbial inoculum of following parts by weight：Jelly bacillus 15
~17 parts, 8~10 parts of azotobacter chroococcum, 11~13 parts of bacillus laterosporus, 14~18 parts of bacillus amyloliquefaciens, saccharomycete 11
~14 parts, 16~20 parts of lactobacillus plantarum.
Further, the complex microbial inoculum preferably comprises the microbial inoculum of following parts by weight：Jelly bacillus 16
Part, 9 parts of azotobacter chroococcum, 12 parts of bacillus laterosporus, 16 parts of bacillus amyloliquefaciens, 13 parts of saccharomycete, lactobacillus plantarum 18
Part.
The microelement is potassium phosphate, calcium carbonate, sodium selenite, ferrous sulfate, magnesium nitrate, zinc sulfate, boric acid, sulfuric acid
One of copper, manganese chloride, ammonium molybdate are a variety of.
The present invention also provides the preparation methods of the edaphon modifying agent, include the following steps：
S1, the edible fungi residue of formula ratio, rice husk, sawdust, earthworm manure, molasses, wheat bran and dregs of beans are uniformly mixed；
S2 simultaneously mixes the attapulgite of formula ratio, weathered coal, white lime and active carbon, and is crushed to partial size in 0.5um
Below；
S3, complex microbial inoculum is dispersed in syrup, stands 20~40min and obtains mixed bacteria liquid；
S4, the water content for mixed bacteria liquid being sprayed in the mixed raw material that step S1 is obtained, and adjusting mixed raw material is 32
~48%, it carries out building heap fermentation, it is primary every 12h turning when fermentation heap temperature is increased to 55~65 DEG C, 25 are down to temperature
At~32 DEG C, stop fermentation；
S5, the mixed raw material mixed in the microelement and step S2 of formula ratio into fermentation heap are done after mixing
Dry, packaging, can be obtained the edaphon modifying agent.
The quality of the syrup is 5~15 times of complex microbial inoculum weight, the mass concentration of the syrup is 0.5~
3.0%.Before fermentation, first complex microbial inoculum is cultivated using syrup, the energy of each microbial inoculum coupled growth can be improved
Power, the vigor of flora in the efficiency and bacterial manure to improve fermentation.
In the formula of edaphon modifying agent provided by the invention, with jelly bacillus, azotobacter chroococcum, side spore bud
Spore bacillus, bacillus amyloliquefaciens, saccharomycete, lactobacillus plantarum form complex microbial inoculum, and jelly bacillus has molten
Phosphorus, Potassium release and fixed nitrogen function can promote plant to nitrogen in soil, potassium, being absorbed and utilized of phosphorus, improve crop yield and quality,
In addition it generates the object that organic acid, amino acid, polysaccharide, hormone etc. are conducive to plant absorption and utilize during growth and breeding
Matter secretes plant growth substance and a variety of enzymes to enhance crop to the resistance of some diseases and inhibits the life of other pathogens
It is long；Azotobacter chroococcum has stronger nitrogen fixing capacity, and can secrete auxin, promotes the growth of plant and the hair of fruit
It educates；Bacillus laterosporus can promote the conversion of nitrogen, and ectoenzyme can be secreted during breeding, and stimulation root system is sent out
Educate, promote absorption to nutrient, promote leaf growth, enhance photosynthesis, can microbial flora in balanced soil, and secrete
A large amount of chitinases.It prevents pernicious bacteria from invading, prevents the generation of pest and disease damage；Bacillus amyloliquefaciens, which can induce crop and generate, to be surpassed
Superoxide dismutase (SOD), polyphenol oxidase (PPO), peroxidase (POD) etc. improve crop anti-adversity；It can induce plant
Rapid secretion Endogenous auxin improves photosynthetic efficiency, promotes plant robust growth, can improve crop rhizosphere microecological balance, living
Change phosphorus, potassium potential nutrients, increases soil fertility；Promote crop Rapid Rooting, improves root hydraulic conductivity, degradable soil and fruit
Remains of pesticide in reality reduces nitrite accumulation, improves fruits and vegetables vitamin and sugared content；Saccharomycete and lactobacillus plantarum can mention
The content of probiotics in high bacterial manure promotes root system of plant healthy growth；Furthermore the above bacterium can improve soil, loose
Hardened, balanced nutrient increases fertility of land, and activating soil ingredient improves soil water-reataining fertilizer-keeping ability, effectively contains soil degradation, changes
Good salt-soda soil, under the comprehensive function of the above microorganism, soil can reply fluffy configuration, and guarantee the health of root system of plant
Growth, reduces the pest and disease damage incidence of plant, significantly improves the yield of crops.
The present invention is fermented with above-mentioned complex microbial inoculum by edible fungi residue, rice husk, sawdust, earthworm manure, molasses, wheat
Then the raw material that bran and dregs of beans mix is mixed to get with attapulgite, weathered coal, white lime, active carbon and microelement
Edaphon modifying agent, attapulgite, weathered coal and active carbon are due to that can increase the ventilative of soil with porous structure
Property and improve the water-retaining property of soil, and the heavy metal in soil can be adsorbed, while the minerals in soil can be improved and contain
Amount；Edible fungi residue is the compost of edible mushroom, contains various trace elements, vitamin, probiotics etc.；Contain in earthworm manure
There are a large amount of humic acid and nutriment；Molasses, wheat bran, dregs of beans can provide sufficient energy during fermentation for microorganism
It supports, and there is certain fertility.The fertilizer formed after the above substance is fermented is applied to after soil, and inside it
Agent complex, be conducive to improve soil structure, reduce soil in content of beary metal, increase gas permeability and the guarantor of soil
White lime that is aqueous, adding in combined formulation, improves the acid-base property of soil.
Compared with prior art, the formula of edaphon modifying agent provided by the invention is reasonable, have Soluble phosphorus, Potassium release and
The effect of fixed nitrogen, remarkably promotes plant for the sorption enhanced of N P and K；Soil texture is improved, gas permeability and the guarantor of soil are increased
It is aqueous, the incidence of pest and disease damage is reduced, the content of beary metal in soil is reduced and improves the acid-base property of soil, promote plant growth
Development.Through testing, the yield of crops can be obviously improved using edaphon modifying agent disclosed by the invention, reduces its disease
Insect pest incidence shortens its growth cycle.
Specific embodiment
The following describes the present invention in detail with reference to examples.It is involved in the present invention to microbial bacterial agent be corresponding
The freeze dried powder of microorganism, viable bacteria content >=10,000,000,000/gram, can be through being commercially available.
Embodiment 1
A kind of edaphon modifying agent, the raw material including following parts by weight：17 parts of attapulgite, is eaten 8 parts of weathered coal
28 parts of bacterium bacteria residue, 12 parts of rice husk, 27 parts of earthworm manure, 19 parts of sawdust, 8 parts of white lime, 9 parts of active carbon, complex microbial inoculum 6
Part, 8 parts of molasses, 10 parts of wheat bran, 11 parts of dregs of beans, 1.7 parts of microelement.
The complex microbial inoculum includes the microbial inoculum of following parts by weight：16 parts of jelly bacillus, azotobacter chroococcum 9
Part, 12 parts of bacillus laterosporus, 16 parts of bacillus amyloliquefaciens, 13 parts of saccharomycete, 18 parts of lactobacillus plantarum.
The preparation method of the edaphon modifying agent is：
S1, the edible fungi residue of formula ratio, rice husk, sawdust, earthworm manure, molasses, wheat bran and dregs of beans are uniformly mixed；
S2 simultaneously mixes the attapulgite of formula ratio, weathered coal, white lime and active carbon, and is crushed to partial size in 0.5um
Below；
S3, complex microbial inoculum is dispersed in syrup, stands 30min and obtains mixed bacteria liquid；The quality of the syrup
It is 12 times of complex microbial inoculum weight, the mass concentration of the syrup is 3.0%
S4, mixed bacteria liquid is sprayed in the mixed raw material that step S1 is obtained, and the water content for adjusting mixed raw material is
48%, it carries out building heap fermentation, it is primary every 12h turning when fermentation heap temperature is increased to 60 DEG C, when temperature is down to 28 DEG C,
Stop fermentation；
S5, the mixed raw material mixed in the microelement and step S2 of formula ratio into fermentation heap are done after mixing
Dry, packaging, can be obtained the edaphon modifying agent.
Edaphon modifying agent in the present embodiment is used to plant asparagus lettuce as base manure, and similar organic in the market
Fertilizer is used as according to identical planting conditions and compares, the results show that the asparagus lettuce that the edaphon modifying agent in the present embodiment is planted
Maturity period opposite can shorten 2~4 days, and the disease incidence in growth course is lower, and yield improves 22.5% compared with control group.
Embodiment 2
A kind of edaphon modifying agent, the raw material including following parts by weight：10 parts of attapulgite, 13 parts of weathered coal, food
With 41 parts of bacterium bacteria residue, 6 parts of rice husk, 20 parts of earthworm manure, 18 parts of sawdust, 10 parts of white lime, 9 parts of active carbon, microbial composite bacteria
8 parts of agent, 6 parts of molasses, 15 parts of wheat bran, 8 parts of dregs of beans, 1.2 parts of microelement.
The complex microbial inoculum includes the microbial inoculum of following parts by weight：The complex microbial inoculum includes following weight
The microbial inoculum of part：12 parts of jelly bacillus, 12 parts of azotobacter chroococcum, 9 parts of bacillus laterosporus, 12 parts of bacillus amyloliquefaciens,
16 parts of saccharomycete, 10 parts of lactobacillus plantarum.
The preparation method of the edaphon modifying agent is：
S1, the edible fungi residue of formula ratio, rice husk, sawdust, earthworm manure, molasses, wheat bran and dregs of beans are uniformly mixed；
S2 simultaneously mixes the attapulgite of formula ratio, weathered coal, white lime and active carbon, and is crushed to partial size in 0.5um
Below；
S3, complex microbial inoculum is dispersed in syrup, stands 20min and obtains mixed bacteria liquid；The quality of the syrup
It is 15 times of complex microbial inoculum weight, the mass concentration of the syrup is 3.0%
S4, mixed bacteria liquid is sprayed in the mixed raw material that step S1 is obtained, and the water content for adjusting mixed raw material is
48%, it carries out building heap fermentation, it is primary every 12h turning when fermentation heap temperature is increased to 55 DEG C, when temperature is down to 32 DEG C,
Stop fermentation；
S5, the mixed raw material mixed in the microelement and step S2 of formula ratio into fermentation heap are done after mixing
Dry, packaging, can be obtained the edaphon modifying agent.
Edaphon modifying agent in the present embodiment is used to plant cucumber as base manure, and similar organic in the market
Fertilizer is used as according to identical planting conditions and compares, the results show that the cucumber that the edaphon modifying agent in the present embodiment is planted
Maturity period opposite can shorten 7~10 days, and the disease incidence in growth course is lower, and yield improves 23.1% compared with control group.
Embodiment 3
A kind of edaphon modifying agent, the raw material including following parts by weight：25 parts of attapulgite, is eaten 6 parts of weathered coal
32 parts of bacterium bacteria residue, 17 parts of rice husk, 18 parts of earthworm manure, 14 parts of sawdust, 12 parts of white lime, 12 parts of active carbon, microbial composite bacteria
10 parts of agent, 12 parts of molasses, 4 parts of wheat bran, 15 parts of dregs of beans, 3.8 parts of microelement.
The complex microbial inoculum includes the microbial inoculum of following parts by weight：The complex microbial inoculum includes following weight
The microbial inoculum of part：12 parts of jelly bacillus, 12 parts of azotobacter chroococcum, 11 parts of bacillus laterosporus, 14 parts of bacillus amyloliquefaciens,
9 parts of saccharomycete, 20 parts of lactobacillus plantarum.
The preparation method of the edaphon modifying agent is：
S1, the edible fungi residue of formula ratio, rice husk, sawdust, earthworm manure, molasses, wheat bran and dregs of beans are uniformly mixed；
S2 simultaneously mixes the attapulgite of formula ratio, weathered coal, white lime and active carbon, and is crushed to partial size in 0.5um
Below；
S3, complex microbial inoculum is dispersed in syrup, stands 40min and obtains mixed bacteria liquid；The quality of the syrup
It is 10 times of complex microbial inoculum weight, the mass concentration of the syrup is 1.5%
S4, mixed bacteria liquid is sprayed in the mixed raw material that step S1 is obtained, and the water content for adjusting mixed raw material is
36%, it carries out building heap fermentation, it is primary every 12h turning when fermentation heap temperature is increased to 65 DEG C, when temperature is down to 32 DEG C,
Stop fermentation；
S5, the mixed raw material mixed in the microelement and step S2 of formula ratio into fermentation heap are done after mixing
Dry, packaging, can be obtained the edaphon modifying agent.
Edaphon modifying agent in the present embodiment is used to plant grape as base manure, and similar organic in the market
Fertilizer is used as according to identical planting conditions and compares, the results show that the grape that the edaphon modifying agent in the present embodiment is planted
Maturity period opposite can shorten 8~10 days, and the disease incidence in growth course is lower, and yield improves 24.5% compared with control group.
The above-mentioned detailed description carried out to a kind of new soil microorganism modifying agent and preparation method thereof referring to embodiment is
It is illustrative without being restrictive, several embodiments can be enumerated according to limited range, therefore do not departing from the present invention
Change and modification under general plotting should belong within protection scope of the present invention.
Claims (9)
1. a kind of edaphon modifying agent, which is characterized in that the raw material including following parts by weight：10~25 parts of attapulgite,
It is 4~13 parts of weathered coal, 22~41 parts of edible fungi residue, 6~17 parts of rice husk, 18~36 parts of earthworm manure, 14~27 parts of sawdust, ripe
3~12 parts of lime, 3~12 parts of active carbon, 3~10 parts of complex microbial inoculum, 3~12 parts of molasses, 4~16 parts of wheat bran, dregs of beans 6
~15 parts, 0.5~3.8 part of microelement.
2. edaphon modifying agent according to claim 1, which is characterized in that the raw material including following parts by weight：It is recessed
13~20 parts of convex stick soil, 6~10 parts of weathered coal, 24~36 parts of edible fungi residue, 8~14 parts of rice husk, 23~31 parts of earthworm manure,
18~22 parts of sawdust, 5~10 parts of white lime, 7~11 parts of active carbon, 5~8 parts of complex microbial inoculum, 6~10 parts of molasses, wheat
7~12 parts of bran, 9~12 parts of dregs of beans, 0.8~2.9 part of microelement.
3. edaphon modifying agent according to claim 1, which is characterized in that the raw material including following parts by weight：It is recessed
17 parts of convex stick soil, 8 parts of weathered coal, 28 parts of edible fungi residue, 12 parts of rice husk, 27 parts of earthworm manure, 19 parts of sawdust, 8 parts of white lime,
9 parts of active carbon, 6 parts of complex microbial inoculum, 8 parts of molasses, 10 parts of wheat bran, 11 parts of dregs of beans, 1.7 parts of microelement.
4. edaphon modifying agent according to claim 1 to 3, which is characterized in that the microorganism is compound
Microbial inoculum includes the microbial inoculum of following parts by weight：12~18 parts of jelly bacillus, 5~12 parts of azotobacter chroococcum, bacillus laterosporus 9
~14 parts, 12~20 parts of bacillus amyloliquefaciens, 8~16 parts of saccharomycete, 10~22 parts of lactobacillus plantarum.
5. edaphon modifying agent according to claim 4, which is characterized in that the complex microbial inoculum include with
The microbial inoculum of lower parts by weight：15~17 parts of jelly bacillus, 8~10 parts of azotobacter chroococcum, 11~13 parts of bacillus laterosporus, solution
14~18 parts of bacillus amyloliquefaciens, 11~14 parts of saccharomycete, 16~20 parts of lactobacillus plantarum.
6. edaphon modifying agent according to claim 4, which is characterized in that the complex microbial inoculum include with
The microbial inoculum of lower parts by weight：16 parts of jelly bacillus, 9 parts of azotobacter chroococcum, 12 parts of bacillus laterosporus, bacillus amyloliquefaciens
16 parts, 13 parts of saccharomycete, 18 parts of lactobacillus plantarum.
7. edaphon modifying agent according to claim 1 to 3, which is characterized in that the microelement is
Potassium phosphate, calcium carbonate, sodium selenite, ferrous sulfate, magnesium nitrate, zinc sulfate, boric acid, copper sulphate, manganese chloride, one in ammonium molybdate
Kind is a variety of.
8. the preparation method of edaphon modifying agent described in -7 any one according to claim 1, which is characterized in that including
Following steps：
S1, the edible fungi residue of formula ratio, rice husk, sawdust, earthworm manure, molasses, wheat bran and dregs of beans are uniformly mixed；
S2 simultaneously by the attapulgite of formula ratio, weathered coal, white lime and active carbon mix, and be crushed to partial size 0.5um with
Under；
S3, complex microbial inoculum is dispersed in syrup, stands 20~40min and obtains mixed bacteria liquid；
S4, mixed bacteria liquid is sprayed in the mixed raw material that step S1 is obtained, and adjust mixed raw material water content be 32~
48%, build heap fermentation, it is primary every 12h turning when fermentation heap temperature is increased to 55~65 DEG C, 25 are down to temperature~
At 32 DEG C, stop fermentation；
S5, the mixed raw material into fermentation heap in the microelement and step S2 of incorporation formula ratio, after mixing, dry, packet
Dress, can be obtained the edaphon modifying agent.
9. the preparation method of edaphon modifying agent according to claim 8, which is characterized in that the quality of the syrup
It is 5~15 times of complex microbial inoculum weight, the mass concentration of the syrup is 0.5~3.0%.
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| CN110004091A (en) * | 2019-04-15 | 2019-07-12 | 微生物肥料技术研究推广中心 | A kind of complex microbial inoculum, soil-repairing agent and preparation method and application |
| CN111014276A (en) * | 2019-12-20 | 2020-04-17 | 西南林业大学 | Method for improving heavy metal pollution in agricultural products |
| CN111330970A (en) * | 2020-03-18 | 2020-06-26 | 西南林业大学 | Method for reducing bioavailability of heavy metal composite contaminated soil in agricultural land |
| CN111777464A (en) * | 2020-06-18 | 2020-10-16 | 深圳市国艺园林建设有限公司 | Biological agent for improving soil fertility and preparation method thereof |
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| CN111330970B (en) * | 2020-03-18 | 2022-04-08 | 西南林业大学 | Method for reducing bioavailability of heavy metal composite contaminated soil in agricultural land |
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Application publication date: 20181130 |