CN107673939A - A kind of biogas residue compound organic fertilizer and preparation method thereof - Google Patents
A kind of biogas residue compound organic fertilizer and preparation method thereof Download PDFInfo
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- CN107673939A CN107673939A CN201711220935.0A CN201711220935A CN107673939A CN 107673939 A CN107673939 A CN 107673939A CN 201711220935 A CN201711220935 A CN 201711220935A CN 107673939 A CN107673939 A CN 107673939A
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- biogas residue
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- wormcast
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B7/00—Fertilisers based essentially on alkali or ammonium orthophosphates
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
-
- 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
-
- 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
Abstract
A kind of biogas residue compound organic fertilizer, its mass fraction consist of the following composition:According to mass fraction, it is made up of following component:100 parts of rice straw, 5 15 parts of diatomite, 25 parts of micronutrient element, 10 20 parts of urea, 3 10 parts of borax, 10 20 parts of MAP, 10 15 parts of potassium chloride, 20 30 parts of humic acid, 35 parts of the sealwort dregs of a decoction, 0.2 0.5 parts of ammonium molybdate；12 parts of ferrous sulfate, 10 20 parts of wormcast of fermentation, 100 200 parts of biogas residue.The biogas residue compound organic fertilizer is high using rear peach yield, does not tend to have crackle appearance.
Description
Technical field
The present invention relates to chemical fertilizer field, more particularly to a kind of biogas residue compound organic fertilizer and preparation method thereof.
Background technology
Biogas technology obtains in recent years as one of most effective approach for solving feces of livestock and poultry and the pollution of crops wormcast
Fast development, its latency environment having, economic benefit receive social recognition；However, to caused biogas slurry after anaerobic fermentation,
The further deep processing of biogas residue, it is directly applied to the report of crops as commodity less, in addition, for large-scale Alcohol Plant,
The enterprises such as Gourmet Powder Factory, the biogas slurry of output, biogas residue processing also turn into thorny problem；If these biogas slurries, biogas residue give it up or
Using improper, the wasting of resources and secondary pollution certainly will be caused；Research is found, contains various nutrient elements (such as in biogas residue and biogas slurry
Nitrogen, phosphorus, potassium, trace element) and organic matter, crude protein, amino acid, cellulose, hemicellulose, lignin, humic acid etc. it is organic
Material, it is also possible to containing degeneration-resistant material (such as proline, linoleic acid), various hydrolases, life in separate sources biogas slurry, biogas residue
Long element (such as abscisic acid, gibberellin) and some antibiotic, profitable strain etc.；These materials, which have, promotes plant growth, hair
Educate, improved soil, degeneration-resistant (disease pest, the drought, cold etc.) property of enhancing crop, and then improve crop yield and the effect of quality；Although
Contain multiple nutritional components in biogas slurry, biogas residue, but the content of nutrient is very low, if applying biogas residue and biogas slurry merely on crop,
Can not meet the needs of crop whole breeding time is to nutrient, it is necessary to match somebody with somebody with chemical fertilizer and apply.
The benefit of peach is well known：Peach has the effect of tonifying middle-Jiao and Qi, nourishing Yin and promoting production of body fluid, relax bowel, and be particularly suitable for use in gas
The people of the symptoms such as blood two loses, lean and haggard, palpitation, constipation, amenorrhoea, extravasated blood swelling and pain eats more；Peach reacts quicker to nitrogen
Sense, nitrogen cross the Sheng then prosperous length of young sprout, nitrogen deficiency then yellowing leaf；Potassium has to peach yield and fruit size, color and luster, flavor etc.
Significantly affect；Potassium nutrition is sufficient, and fruit is big, and fruit face is plentiful, and stained area is big, bright in colour, with rich flavor；Potassium nutrition
Small, the aberration of insufficient then fruit, it is lightly seasoned；Peach is smaller to phosphate fertilizer requirement, but lacking phosphorus can make peach fruit fruit face dark and gloomy, meat pine
Soft, sour, spottiness or crackle occur when on pericarp.
Peach fruit peach dehiscent fruit is a kind of phenomenon of generally existing, has in early, middle and late kind and occurs, Symptoms
To be broken into two with one's hands along fruit center line, the thread pectin of pulp band, meat is soft, and space between cells is big, lightly seasoned, and moisture is few, or even with bitter taste,
The quality and commodity value of peach fruit have been had a strong impact on, has caused economic loss.
The content of the invention
An object of the present invention is to overcome the above-mentioned deficiency of prior art and provide a kind of biogas residue compound organic fertilizer, should
Biogas residue compound organic fertilizer is high using rear peach yield, does not tend to have crackle appearance.
The second object of the present invention is the preparation method for providing above-mentioned biogas residue compound organic fertilizer.
The technical scheme is that：A kind of biogas residue compound organic fertilizer, according to mass fraction, is made up of following component:Rice
Careless 100 parts of stalk, diatomite 5-15 parts, micronutrient element 2-5 parts, urea 10-20 parts, borax 3-10 parts, potassium chloride 10-15
Part, MAP 10-20 parts, humic acid 20-30 parts, sealwort dregs of a decoction 3-5 parts, ammonium molybdate 0.2-0.5 parts, ferrous sulfate 1-2
Part, fermentation wormcast 10-20 parts, biogas residue 100-200 parts.
Described micronutrient element is made up in terms of weight fraction of following component：
Zinc sulfate 5-10 parts, manganese sulfate 2-5 parts, magnesium sulfate 5-10 parts.
The biogas residue is biogas residue of the mother liquor after separation of solid and liquid after being fermented by methane-generating pit, biogas residue water content 50-60wt%.
The preparation method of the fermentation wormcast is as follows：
（1）By in 100 parts of dried earthworms excrement, 3-5 parts leavening, 5-15 part castor cakes, 4-7 part ethanol is added, stirs, obtains
Wormcast matrix；
（2）Wormcast matrix pH value is adjusted to 6-8；
（3）Wormcast water content of substrate is adjusted, moisture content is maintained between 60~65%；
（4）Wormcast builds heap, and stack height is in 1-2m, and width is in 1.5-3m, and length is in 2-4m；
（5）Mix ventilation thoroughly：Earthworm dunghill is inserted into bamboo pole with holes every 50-70cm, ensures ventilation, and timing is stirred, and is carried out
Aerobic fermentation.
For wormcast after accumulation 2 days, temperature can be increased to 55~65 DEG C, can reach more than 65 DEG C within the 3rd day, warm herein
It should be stirred once under degree, generally, be likely to occur 2~3 more than 65 DEG C of high temperature during the fermentation, so, it need to turn over
Fermentation process, normal condition next week or so the completion that can ferment can be completed by moving 2~3 times.
Step（1）In can also add 3-7 part waste edible fungus gurrys and ferment together, when described waste edible fungus gurry uses
It is 100-300 mesh, preferably Lenlinus edodes discarded object to be crushed to particle diameter, its original mushroom culture medium（Produce the culture medium before mushroom）
It is prepared from the following raw materials in parts by weight：Mulberry tree branch powder 20-25 parts, cotton seed hulls 10-20 parts, wheat bran 20-25 parts, dregs of beans 5-
10 parts, corncob 5-10 parts, corn flour 5-10 parts, corn stalk powder 10-20 parts, precipitated calcium carbonate 0.5-1.5 parts.
The preparation method of biogas residue compound organic fertilizer of the present invention is as follows：
（1）Each composition is weighed by formula；
（2）It is 1-3mm that rice straw is crushed into particle diameter, is mixed with biogas residue and the sealwort dregs of a decoction, and addition accounts for rice straw weight 1%
Ammoniacal liquor, it is 50-55% to add water to adjust to moisture content, is placed in after well mixed in closed container and carries out Ammonia with ammonia spirit
Change is handled, and processing saves backup after terminating；
（3）The Concave-convex clay rod of rice straw dry matter weight 10% is added, is well mixed with Ammoniated rice straw stalk, uses phosphorus
Mixture pH is adjusted to 6-7 by acid, and regulation moisture content is 50-55%, adds strain, inoculum concentration is rice straw dry matter weight
The 3-5% of amount, solid state fermentation is carried out at 25-30 DEG C after well mixed；Solid state fermentation is carried out 15-20 days, right after fermentation ends
Fermentation materials are granulated, particle diameter 5-10mm；
（4）Other compositions are eventually adding, blending is uniform.
The beneficial effects of the present invention are：
Each raw material of fertilizer cooperates, and the collaboration of its performance promotes, and obtained peach high yield special fertilizer, can preferably coordinate peach
The equilibrium of supply and demand between tree and soil, improves the utilization rate of fertilizer, reduces cost to greatest extent, and obtained peach fruit is big, taste
Dense, nutrition is high, does not tend to have crackle appearance.
Embodiment
Embodiment Meso- and micro-nutrients are made up in terms of weight fraction of following component：
7 parts of zinc sulfate, 4 parts of manganese sulfate, 8 parts of magnesium sulfate.
Fermentation wormcast A preparation method is as follows in embodiment：
（1）By in 100 parts of dried earthworms excrement, 5 portions of leavenings, 10 parts of castor cakes, 5 parts of additions, 7 parts of ethanol, stir, obtain earthworm
Earthworm excrement matrix；Leavening is such as golden opportunistic pathogen organic fertilizer fermentation special function bacterium.
（2）Wormcast matrix pH value is adjusted to 6-8；
（3）Wormcast water content of substrate is adjusted, moisture content is maintained between 60~65%；
（4）Wormcast builds heap, and stack height is in 1.5m, and width is in 1.5m, and length is in 3m；
（5）Mix ventilation thoroughly：Earthworm dunghill is made into bulk shape, a bamboo pole, bamboo pole diameter are inserted every 50cm in width
3-5cm, bamboo pole will punch, and hole knockout is that every bamboo pole uniformly makes a call to 4 row holes vertically, and line space is identical, and the pitch of holes of each row is
7cm, aperture 2-3 cm, ensure ventilation, and timing overturns, to carry out aerobic fermentation.
For wormcast after accumulation 2 days, temperature is increased to 50~60 DEG C, can reach more than 65 DEG C within the 3rd day, at this temperature
Overturn 1 time, occur 3 more than 65 DEG C of high temperature during the fermentation, so, need to overturn can complete fermentation process for 3 times, 7 days
Fermentation is completed.
Fermentation wormcast B preparation method is as follows in embodiment：
（1）In 100 parts of dried earthworms excrement, 5 portions of leavenings, 10 parts of castor cakes, 5 parts of mushroom discarded object, 7 parts of ethanol, stirring will be added
Uniformly, wormcast matrix is obtained；
（2）Wormcast matrix pH value is adjusted to 6-8；
（3）Wormcast water content of substrate is adjusted, moisture content is maintained between 60~65%；
（4）Wormcast builds heap, and stack height is in 1.5m, and width is in 1.5m, and length is in 3m；
（5）Mix ventilation thoroughly：Earthworm dunghill is made into bulk shape, a bamboo pole, bamboo pole diameter are inserted every 50cm in width
3-5cm, bamboo pole will punch, and hole knockout is that every bamboo pole uniformly makes a call to 4 row holes vertically, and line space is identical, and the pitch of holes of each row is
7cm, aperture 2-3 cm, ensure ventilation, and timing overturns, to carry out aerobic fermentation.
For wormcast after accumulation 2 days, temperature is increased to 50~60 DEG C, can reach more than 65 DEG C within the 3rd day, at this temperature
Overturn 1 time, occur 3 more than 65 DEG C of high temperature during the fermentation, so, need to overturn can complete fermentation process for 3 times, 7 days
Fermentation is completed.
Mushroom discarded object, its original mushroom culture medium（Produce the culture medium before mushroom）By the raw material of following weight proportion
It is made：25 parts of mulberry tree branch powder, 15 parts of cotton seed hulls, 20 parts of wheat bran, 8 parts of dregs of beans, 7 parts of corncob, 8 parts of corn flour, corn
15 parts of straw powder, 1 part of precipitated calcium carbonate.
Embodiment 1
100 parts of rice straw, 7 parts of diatomite, 3 parts of micronutrient element, 17 parts of urea, 8 parts of borax, 15 parts of MAP, chlorine
Change 12 parts of potassium, 25 parts of humic acid, 3 parts of the sealwort dregs of a decoction, 0.5 part of ammonium molybdate, 2 parts of ferrous sulfate, 15 parts of fermentation wormcast A, biogas residue
100 parts.
Embodiment 2
100 parts of rice straw, 10 parts of diatomite, 4 parts of micronutrient element, 16 parts of urea, 7 parts of borax, 13 parts of MAP, chlorine
Change 12 parts of potassium, 27 parts of humic acid, 4 parts of the sealwort dregs of a decoction, 0.3 part of ammonium molybdate；1 part of ferrous sulfate, 17 parts of fermentation wormcast B, natural pond
110 parts of slag.
Embodiment 3
100 parts of rice straw, 8 parts of diatomite, 5 parts of micronutrient element, 18 parts of urea, 5 parts of borax, 17 parts of MAP, chlorine
Change 12 parts of potassium, 23 parts of humic acid, 5 parts of the sealwort dregs of a decoction, 0.4 part of ammonium molybdate；3 parts of ferrous sulfate, wormcast B18 parts of fermenting.
Embodiment 4
100 parts of rice straw, 6 parts of diatomite, 2 parts of micronutrient element, 16 parts of urea, 5 parts of borax, 12 parts of MAP, chlorine
Change 12 parts of potassium, 24 parts of humic acid, 4 parts of the sealwort dregs of a decoction, 0.5 part of ammonium molybdate；2 parts of ferrous sulfate, fermentation wormcast B19 parts, biogas residue
120 parts.
Embodiment 5
100 parts of rice straw, 11 parts of diatomite, 5 parts of micronutrient element, 20 parts of urea, 10 parts of borax, 12 parts of potassium chloride, phosphorus
Sour 19 parts of an ammonium, 21 parts of humic acid, 3 parts of the sealwort dregs of a decoction, 0.4 part of ammonium molybdate；2 parts of ferrous sulfate, 13 parts of fermentation wormcast B, natural pond
120 parts of slag.
Embodiment 6
100 parts of rice straw, 14 parts of diatomite, 5 parts of micronutrient element, 15 parts of urea, 9 parts of borax, 16 parts of MAP, chlorine
Change 12 parts of potassium, 26 parts of humic acid, 5 parts of the sealwort dregs of a decoction, 0.5 part of ammonium molybdate；2 parts of ferrous sulfate, 14 parts of fermentation wormcast B, natural pond
130 parts of slag.
Embodiment 7
100 parts of rice straw, 9 parts of diatomite, 4 parts of micronutrient element, 17 parts of urea, 7 parts of borax, 14 parts of MAP, chlorine
Change 12 parts of potassium, 24 parts of humic acid, 4 parts of the sealwort dregs of a decoction, 0.5 part of ammonium molybdate；2 parts of ferrous sulfate, 16 parts of fermentation wormcast B, biogas residue
130 parts.
Comparative example 1
100 parts of rice straw, 9 parts of diatomite, 4 parts of micronutrient element, 17 parts of urea, 7 parts of borax, 14 parts of MAP, chlorine
Change 12 parts of potassium, 24 parts of humic acid, 4 parts of the sealwort dregs of a decoction, 0.5 part of ammonium molybdate；2 parts of ferrous sulfate, wormcast B16 parts of fermenting.
Comparative example 1 eliminates biogas residue on the basis of embodiment 7, and other are same as Example 7.
Comparative example 2
100 parts of rice straw, 9 parts of diatomite, 4 parts of micronutrient element, 17 parts of urea, 7 parts of borax, 14 parts of MAP, chlorine
Change 12 parts of potassium, 24 parts of humic acid, 0.5 part of ammonium molybdate；2 parts of ferrous sulfate, 16 parts of fermentation wormcast B, 130 parts of biogas residue.
Comparative example 2 eliminates the sealwort dregs of a decoction on the basis of embodiment 7, and other are same as Example 7.
Above example, the preparation method of comparative example are as follows：
（1）Each composition is weighed by formula；
（2）It is 1-3mm that rice straw is crushed into particle diameter, is mixed with biogas residue and the sealwort dregs of a decoction, adds the ammonia for accounting for stalk weight 1%
Water, it is 50-55% to add water to adjust to moisture content, is placed in closed container after well mixed and is carried out with ammonia spirit at high temperature ammonification
Reason, processing save backup after terminating；
（3）The Concave-convex clay rod of rice straw dry matter weight 10% is added, is well mixed with Ammoniated rice straw stalk, uses phosphorus
Mixture pH is adjusted to 6-7 by acid, and regulation moisture content is 50-55%, adds strain Pleurotus ostreatus P1-5,
Inoculum concentration is the 5% of rice straw dry matter weight, and solid state fermentation is carried out at 25-30 DEG C after well mixed；Solid state fermentation enters
Fermentation materials are granulated by row 15 days after fermentation ends, particle diameter 5-10mm；
（4）Other compositions are eventually adding, blending is uniform.
Peach high yield special fertilizer obtained by embodiment 1-7, comparative example 1-2 is tested from same peach garden, peach
For 4 ages, every mu is applied 55kg fertilizer, is applied fertilizer apart from the 70cm ditchings of peach center, and spring single fertilization, result of the test is shown in Table
1。
The peach test result produced of peach high yield special fertilizer obtained by the embodiment 1-7 of table 1, comparative example 1-2
。
Claims (6)
1. a kind of biogas residue compound organic fertilizer, according to mass fraction, is made up of following component:100 parts of rice straw, diatomite 5-
15 parts, micronutrient element 2-5 parts, urea 10-20 parts, borax 3-10 parts, MAP 10-20 parts, potassium chloride 10-15 parts,
Humic acid 20-30 parts, sealwort dregs of a decoction 3-5 parts, ammonium molybdate 0.2-0.5 parts；Ferrous sulfate 1-2 parts, fermentation wormcast 10-20 parts,
Biogas residue 100-200 parts.
2. biogas residue compound organic fertilizer according to claim 1, it is characterised in that：The biogas residue is after being fermented by methane-generating pit
Biogas residue of the mother liquor after separation of solid and liquid, biogas residue water content 50-60wt%.
3. biogas residue compound organic fertilizer according to claim 1, it is characterised in that：The preparation method of the fermentation wormcast is such as
Under：
（1）By in 100 parts of dried earthworms excrement, 3-5 parts leavening, 5-15 part castor cakes, 4-7 part ethanol is added, stirs, obtains
Wormcast matrix；
（2）Wormcast matrix pH value is adjusted to 6-8；
（3）Wormcast water content of substrate is adjusted, moisture content is maintained between 60~65%；
（4）Wormcast builds heap, and stack height is in 1-2m, and width is in 1.5-3m, and length is in 2-4m；
（5）Mix ventilation thoroughly：Earthworm dunghill is inserted into bamboo pole with holes every 50-70cm, ensures ventilation, and timing is stirred, and is carried out
Aerobic fermentation.
4. biogas residue compound organic fertilizer according to claim 3, it is characterised in that：The step（1）In can also add 3-7
Part Lenlinus edodes discarded object ferments together, described waste edible fungus gurry using when to be crushed to particle diameter be 100-300 mesh, its original perfume (or spice)
Mushroom is prepared from the following raw materials in parts by weight with culture medium：Mulberry tree branch powder 20-25 parts, cotton seed hulls 10-20 parts, wheat bran 20-25
Part, dregs of beans 5-10 parts, corncob 5-10 parts, corn flour 5-10 parts, corn stalk powder 10-20 parts, precipitated calcium carbonate 0.5-
1.5 part.
5. biogas residue compound organic fertilizer according to claim 1, it is characterised in that described micronutrient element is with weight point
Number meter is made up of following component：Zinc sulfate 5-10 parts, manganese sulfate 2-5 parts, magnesium sulfate 5-10 parts.
6. the preparation method of biogas residue compound organic fertilizer according to claim 1, it is characterised in that：
（1）Each composition is weighed by formula；
（2）It is 1-3mm that rice straw is crushed into particle diameter, is mixed with biogas residue and the sealwort dregs of a decoction, and addition accounts for rice straw weight 1%
Ammoniacal liquor, it is 50-55% to add water to adjust to moisture content, is placed in after well mixed in closed container and carries out Ammonia with ammonia spirit
Change is handled, and processing saves backup after terminating；
（3）The Concave-convex clay rod of rice straw dry matter weight 10% is added, is well mixed with Ammoniated rice straw stalk, uses phosphorus
Mixture pH is adjusted to 6-7 by acid, and regulation moisture content is 50-55%, adds strain, strain dosage is rice straw dry
The 3-5% of weight, solid state fermentation is carried out at 25-30 DEG C after well mixed；Solid state fermentation is carried out 15-20 days, after fermentation ends
Fermentation materials are granulated, particle diameter 5-10mm；
（4）Other compositions are eventually adding, blending is uniform.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105837280A (en) * | 2016-03-18 | 2016-08-10 | 西北农林科技大学 | Preparation technology for biogas residue biological organic fertilizer |
| CN108432601A (en) * | 2018-03-20 | 2018-08-24 | 广西长耀隆农业科技有限公司 | A kind of grape seedling medium and preparation method thereof |
| CN108702997A (en) * | 2018-05-24 | 2018-10-26 | 广西壮族自治区林业科学研究院 | A method of promoting Characteristics of Soil Fertility Under Eucalyptus Plantations using biogas residue |
| CN109704837A (en) * | 2018-12-21 | 2019-05-03 | 浙江大学 | Using biogas residue after anaerobic fermentation as the organic-inorganic compound mixed fertilizer of raw material and preparation method |
| CN110015928A (en) * | 2019-04-19 | 2019-07-16 | 攀枝花嘉骅生态农业开发有限公司 | The preparation process of earthworm manure organic fertilizer |
| CN110972880A (en) * | 2020-01-17 | 2020-04-10 | 扬州大学 | Method for promoting survival of transplanted nursery stock |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105837280A (en) * | 2016-03-18 | 2016-08-10 | 西北农林科技大学 | Preparation technology for biogas residue biological organic fertilizer |
| CN108432601A (en) * | 2018-03-20 | 2018-08-24 | 广西长耀隆农业科技有限公司 | A kind of grape seedling medium and preparation method thereof |
| CN108702997A (en) * | 2018-05-24 | 2018-10-26 | 广西壮族自治区林业科学研究院 | A method of promoting Characteristics of Soil Fertility Under Eucalyptus Plantations using biogas residue |
| CN109704837A (en) * | 2018-12-21 | 2019-05-03 | 浙江大学 | Using biogas residue after anaerobic fermentation as the organic-inorganic compound mixed fertilizer of raw material and preparation method |
| CN110015928A (en) * | 2019-04-19 | 2019-07-16 | 攀枝花嘉骅生态农业开发有限公司 | The preparation process of earthworm manure organic fertilizer |
| CN110972880A (en) * | 2020-01-17 | 2020-04-10 | 扬州大学 | Method for promoting survival of transplanted nursery stock |
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Application publication date: 20180209 |