CN106316630A - Biologic organic fertilizer with fermented and thoroughly decomposed pig manure - Google Patents
Biologic organic fertilizer with fermented and thoroughly decomposed pig manure Download PDFInfo
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- CN106316630A CN106316630A CN201610741142.2A CN201610741142A CN106316630A CN 106316630 A CN106316630 A CN 106316630A CN 201610741142 A CN201610741142 A CN 201610741142A CN 106316630 A CN106316630 A CN 106316630A
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- fertilizer
- phosphate
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- pig manure
- mixture
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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
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B3/00—Fertilisers based essentially on di-calcium phosphate
-
- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/40—Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse
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- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biotechnology (AREA)
- Engineering & Computer Science (AREA)
- Biochemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Microbiology (AREA)
- Molecular Biology (AREA)
- Pest Control & Pesticides (AREA)
- Fertilizers (AREA)
Abstract
The invention discloses a biologic organic fertilizer with fermented and thoroughly decomposed pig manure. The fertilizer consists of pig manure, phosphate fertilizer with dicalcium phosphate as the main component, phosphate fertilizer with tricalcium phosphate as the main component, neutral potash fertilizer, biological nitrogen-fixing bacteria, multivitamin compound enzymes and fermentation nutrient supplement. The preparation process is to mix the multivitamin compound enzymes and the fermentation nutrient supplement evenly, and then mix with the pig manure sufficiently; pile the mixture together; turn up the mixture when the internal temperature reaches 65 oC, ferment the mixture for 12-15 days, till the mixture color turns dark and there are white bacterial strains growing from the shady part, and the temperature won't rise greatly, by which time, the mixture is thoroughly decomposed; mix the phosphate fertilizer with dicalcium phosphate as the main component, the phosphate fertilizer with tricalcium phosphate as the main component, the neutral potash fertilizer, the biological nitrogen-fixing bacteria and the pig manure evenly. The preparation method can save the fermentation time of organic fertilizers with pig manure and can increase the yield of crops.
Description
Technical field
The present invention relates to a kind of agricultural production bio-organic fertilizer technical field, the pig manure of a kind of fermentation maturity is raw
Organic fertilizer.
Background technology
Fertilizer is mainly used in providing growth necessary nutrient for crops, the most also requires to have concurrently to improve soil
Matter, the function of level of increasing soil fertility.Plant is at necessary for growth its fast-growth of substantial amounts of Nutrients uptake, different
The growth of crop is had a certain impact by soil, and this is accomplished by effectively improveing soil；The fertilizer of existing improvement soil
Simply can see the fertilizer impact on crops, can not reach effectively to improve to soil；Major part soil is owing to using chemical fertilizer
Causing soil compaction, lean soil is unreasonable due to fertilising, the most effectively improves the soil, thus causes not having harvest or in poor harvest.
To this end, biological organic fertilizer increasingly receives publicity, biological organic fertilizer mainly with green manure, night soil, barnyard manure, compost,
Make compost, raw material based on biogas manure and sludge and refuse etc., additionally add the microorganism fungus kind promoting decomposition and inversion, through microorganism
Could be absorbed by plant after decomposition and inversion；The advantage of biological organic fertilizer is that nutrient is complete, fertilizer efficiency length, Soil building are effective.
Organic fertilizer, rich in the nutrient substance needed for organic substance and plant growth, can not only provide nutrient needed for plant growth, improvement
Soil, it is also possible to improve crop quality, improves crop yield, promotes high crop yield stable yields, preservation of fertility, can improve simultaneously
Utilization rate of fertilizer, reduces production cost.Fully Appropriate application organic fertilizer can increase crop yield, culture fertility, improve agricultural production
Product quality, the effectiveness of raising soil nutrient.
The quality of pig manure is thinner, complicated component, containing more ammonification microorganism, and the humus formed is more,
It is that a kind of character is soft and have the organic fertilizer of reserve strength；In prior art, the biological organic fertilizer with swine excrement as substrate fails there is pin
To property ground addO-on therapy and microorganism fungus kind, thus cause traditional Swine manure fermentation time long, phosphate fertilizer decomposition rate mistake
The shortcoming such as fast, is unfavorable for improving the yield of crops.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides the pig manure bio-organic fertilizer of a kind of fermentation maturity, it is possible to
Shorten the fermentation time of Swine manure, and the yield of crops can be improved.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of pig manure bio-organic fertilizer of fermentation maturity, including swine excrement, phosphate fertilizer with dicalcium phosphate as main component, with phosphoric acid
DFP is the phosphate fertilizer of main component, neutral potash fertilizer, biological nitrogen fixation bacterium, multidimensional composite enzyme bacterium and Nutrious fermented auxiliary agent, described pig manure
Just for pig urine and the mixture of pig manure, the usage amount of described biological nitrogen fixation bacterium and described multidimensional composite enzyme bacterium all accounts for described swine excrement
The 0.05%～0.50% of gross mass, the phosphorus element in the described phosphate fertilizer with dicalcium phosphate as main component accounts for described swine excrement gross mass
0.4%～0.6%, the phosphorus element in the described phosphate fertilizer with tricalcium phosphate as main component account for described swine excrement gross mass 0.4%～
0.6%, make the potassium contents in described swine excrement be 0.7%～1.1% by adding described neutral potash fertilizer, described Nutrious fermented help
The Organic substance that agent is fermented for sugar can be provided to carry out for described multidimensional composite enzyme bacterium；And include following preparation process:
Step one, by suitable quantity of water, described multidimensional composite enzyme bacterium and described Nutrious fermented auxiliary agent mix homogeneously are formed fermenting mixture
Disperse system, then utilizes the urine of the pig in the described swine excrement that scoop will be deposited on level land and pig manure to turn over throwing mix homogeneously, mixed
During closing described swine excrement, utilize atomized spray instrument that described fermenting mixture disperse system is uniformly sprayed onto described pig manure
Just, in, pre fermentation fertilizer is prepared；
Step 2, being packed together by the described pre fermentation fertilizer that step one prepares, the width of accumulation is 1.2～2 meters, highly
Being 0.6～1.2 meter, the in real time internal temperature of the described pre fermentation fertilizer that monitoring is piled up, when internal temperature reaches 65 DEG C pair
The described pre fermentation fertilizer piled up carries out turning over polishing working, makes the described pre fermentation fertilizer within accumulation and the institute of deposition surface
State pre fermentation fertilizer location swap, ferment 12～15 days until material darkens, in the shade face has white hypha to grow, temperature
The most significantly raised being considered as is become thoroughly decomposed completely, prepares decomposed manure；
Step 3, to step 2 prepare described in decomposed manure be sampled detecting potassium contents therein, then basis
Difference weighs the described neutral potash fertilizer required supplementation with, by described phosphate fertilizer with dicalcium phosphate as main component, described with tricresyl phosphate
Calcium is that the phosphate fertilizer of main component, described neutral potash fertilizer, described biological nitrogen fixation bacterium add a small amount of water and be mixed to form inanimate matter disperse system, so
After turn over decomposed manure described in throwing mixing and spray described inanimate matter disperse system simultaneously uniformly, i.e. prepare bio-organic fertilizer.
As technique scheme concrete preferably, described Nutrious fermented auxiliary agent is flour, rice flour, sweet potato powder, Semen sojae atricolor powder
The mixture of one or more in end and brown sugar powder, and the mass ratio of described Nutrious fermented auxiliary agent and described biological nitrogen fixation bacterium
For (5～15) 1.
As technique scheme concrete preferably, the described phosphate fertilizer with dicalcium phosphate as main component as precipitated phosphate,
One or more in thomas phosphate, calcium magnesium phosphate and defluorinated phosphate and mixture.
As technique scheme concrete preferably, the described phosphate fertilizer with tricalcium phosphate as main component as bone meal, phosphorus ore
Powder or bone meal and the mixture of ground phosphate rock.
As technique scheme concrete preferably, described biological nitrogen fixation bacterium is azospirillum, ditch millet nitrogen-fixing bacteria or fixed nitrogen
Spirillum and the mixture of ditch millet nitrogen-fixing bacteria.
Compared with prior art, the invention has the beneficial effects as follows:
The pig manure bio-organic fertilizer of a kind of fermentation maturity provided by the present invention, by addO-on therapy targetedly and microorganism
Strain, and use the fast fermentation method of science such that it is able to it is significantly reduced the fermentation time of Swine manure；In addition this
Bright for shortcomings such as pig manure phosphate fertilizer decomposition rate are too fast, by supplementing phosphate fertilizer with dicalcium phosphate as main component, with tricresyl phosphate
Calcium is phosphate fertilizer and the biological nitrogen fixation bacterium of main component, can long-acting offer nitrogenous fertilizer and phosphate fertilizer, the beneficially yield of raising crops.
Detailed description of the invention
Further describe the technology contents of the present invention below in conjunction with specific embodiments.
Specific embodiment 1
The pig manure bio-organic fertilizer of a kind of fermentation maturity that the present embodiment is provided, is main including swine excrement, with dicalcium phosphate
The phosphate fertilizer of composition, the phosphate fertilizer with tricalcium phosphate as main component, neutral potash fertilizer, biological nitrogen fixation bacterium, multidimensional composite enzyme bacterium and fermentation
Nutritional auxiliary, described swine excrement is making of the mixture of pig urine and pig manure, described biological nitrogen fixation bacterium and described multidimensional composite enzyme bacterium
Consumption all accounts for the 0.05% of described swine excrement gross mass, and the phosphorus element in the described phosphate fertilizer with dicalcium phosphate as main component accounts for described
The 0.4% of swine excrement gross mass, the phosphorus element in the described phosphate fertilizer with tricalcium phosphate as main component accounts for described swine excrement gross mass
0.4%, make the potassium contents in described swine excrement be 0.7% by adding described neutral potash fertilizer, described Nutrious fermented auxiliary agent is can
To provide sugar to carry out the Organic substance fermented for described multidimensional composite enzyme bacterium；And include following preparation process:
Step one, by suitable quantity of water, described multidimensional composite enzyme bacterium and described Nutrious fermented auxiliary agent mix homogeneously are formed fermenting mixture
Disperse system, then utilizes the urine of the pig in the described swine excrement that scoop will be deposited on level land and pig manure to turn over throwing mix homogeneously, mixed
During closing described swine excrement, utilize atomized spray instrument that described fermenting mixture disperse system is uniformly sprayed onto described pig manure
Just, in, pre fermentation fertilizer is prepared；
Step 2, being packed together by the described pre fermentation fertilizer that step one prepares, the width of accumulation is 1.2～2 meters, highly
Being 0.6～1.2 meter, the in real time internal temperature of the described pre fermentation fertilizer that monitoring is piled up, when internal temperature reaches 65 DEG C pair
The described pre fermentation fertilizer piled up carries out turning over polishing working, makes the described pre fermentation fertilizer within accumulation and the institute of deposition surface
State pre fermentation fertilizer location swap, ferment 12～15 days until material darkens, in the shade face has white hypha to grow, temperature
The most significantly raised being considered as is become thoroughly decomposed completely, prepares decomposed manure；
Step 3, to step 2 prepare described in decomposed manure be sampled detecting potassium contents therein, then basis
Difference weighs the described neutral potash fertilizer required supplementation with, by described phosphate fertilizer with dicalcium phosphate as main component, described with tricresyl phosphate
Calcium is that the phosphate fertilizer of main component, described neutral potash fertilizer, described biological nitrogen fixation bacterium add a small amount of water and be mixed to form inanimate matter disperse system, so
After turn over decomposed manure described in throwing mixing and spray described inanimate matter disperse system simultaneously uniformly, i.e. prepare bio-organic fertilizer.
Specifically, the one during described Nutrious fermented auxiliary agent is flour, rice flour, sweet potato powder, powdered soybean and brown sugar powder
Or multiple mixture, and the mass ratio of described Nutrious fermented auxiliary agent and described biological nitrogen fixation bacterium is 15 1.Described with di(2-ethylhexyl)phosphate
Calcium is that the phosphate fertilizer of main component is one or more in precipitated phosphate, thomas phosphate, calcium magnesium phosphate and defluorinated phosphate and mixes
Thing.The described phosphate fertilizer with tricalcium phosphate as main component as bone meal, ground phosphate rock or bone meal and the mixture of ground phosphate rock.Described biology
Nitrogen-fixing bacteria are azospirillum, ditch millet nitrogen-fixing bacteria or azospirillum and the mixture of ditch millet nitrogen-fixing bacteria.
Specific embodiment 2
A kind of biological organic fertilizer with swine excrement as substrate that the present embodiment is provided, including swine excrement, based on dicalcium phosphate
Want the phosphate fertilizer of composition, the phosphate fertilizer with tricalcium phosphate as main component, neutral potash fertilizer, biological nitrogen fixation bacterium, multidimensional composite enzyme bacterium and send out
Ferment nutritional auxiliary, described swine excrement is pig urine and the mixture of pig manure, described biological nitrogen fixation bacterium and described multidimensional composite enzyme bacterium
Usage amount all accounts for the 0.10% of described swine excrement gross mass, and the phosphorus element in the described phosphate fertilizer with dicalcium phosphate as main component accounts for institute
Stating the 0.5% of swine excrement gross mass, the phosphorus element in the described phosphate fertilizer with tricalcium phosphate as main component accounts for described swine excrement gross mass
0.5%, make the potassium contents in described swine excrement be 0.9% by adding described neutral potash fertilizer.Described Nutrious fermented auxiliary agent with
The mass ratio of described biological nitrogen fixation bacterium is 10 1.
A kind of biological organic fertilizer preparation process with swine excrement as substrate that the present embodiment is provided and specific embodiment 1 phase
With.
Specific embodiment 3
A kind of biological organic fertilizer with swine excrement as substrate that the present embodiment is provided, including swine excrement, based on dicalcium phosphate
Want the phosphate fertilizer of composition, the phosphate fertilizer with tricalcium phosphate as main component, neutral potash fertilizer, biological nitrogen fixation bacterium, multidimensional composite enzyme bacterium and send out
Ferment nutritional auxiliary, described swine excrement is pig urine and the mixture of pig manure, described biological nitrogen fixation bacterium and described multidimensional composite enzyme bacterium
Usage amount all accounts for the 0.50% of described swine excrement gross mass, and the phosphorus element in the described phosphate fertilizer with dicalcium phosphate as main component accounts for institute
Stating the 0.6% of swine excrement gross mass, the phosphorus element in the described phosphate fertilizer with tricalcium phosphate as main component accounts for described swine excrement gross mass
0.6%, make the potassium contents in described swine excrement be 1.1% by adding described neutral potash fertilizer.Described Nutrious fermented auxiliary agent with
The mass ratio of described biological nitrogen fixation bacterium is 51.
A kind of biological organic fertilizer preparation process with swine excrement as substrate that the present embodiment is provided and specific embodiment 1 phase
With.
The when that in Plain, the middle and lower reach of Yangtze River, double single harvest rice subprovinces carrying out japonica rice plantation, contrast uses the present invention to be embodied as
A kind of biological organic fertilizer with swine excrement as substrate that example 1～3 is provided and the impact on crop yield of the commercially available compound fertilizer: execute
Fertile method contains divided by fertilizer divided by fertilizer nutrient utilization according to the difference of amount of nutrients needed for scheduled production with soil keeping amount again
Amount of nutrients, wherein fertilizer nutrient utilization is defined as 35%；Utilize the one that specific embodiment 1～3 is provided with swine excrement as base
The japonica rice plantation yield of the biological organic fertilizer fertilising of matter with directly with sheep stool or the round-grained rice that applies fertilizer as fertilizer using commercially available compound fertilizer
Seed rice plants yield no significant difference, but a kind of biology with swine excrement as substrate utilizing specific embodiment 1～3 to be provided has
Machine fertilizer applies fertilizer, the commercially available compound fertilizer of capable of reducing using 60%.
Preferably enforcement to the present invention is illustrated above, and certainly, the present invention can also use and above-mentioned enforcement
The form that mode is different, those of ordinary skill in the art are in the conversion of the equivalent made on the premise of spirit of the present invention
Or change accordingly, all should belong in protection scope of the present invention.
Claims (5)
1. the pig manure bio-organic fertilizer of a fermentation maturity, it is characterised in that include swine excrement, with dicalcium phosphate as main component
Phosphate fertilizer, phosphate fertilizer with tricalcium phosphate as main component, neutral potash fertilizer, biological nitrogen fixation bacterium, multidimensional composite enzyme bacterium and Nutrious fermented
Auxiliary agent, described swine excrement is pig urine and the mixture of pig manure, described biological nitrogen fixation bacterium and the usage amount of described multidimensional composite enzyme bacterium
All accounting for the 0.05%～0.50% of described swine excrement gross mass, the phosphorus element in the described phosphate fertilizer with dicalcium phosphate as main component accounts for institute
Stating the 0.4%～0.6% of swine excrement gross mass, the phosphorus element in the described phosphate fertilizer with tricalcium phosphate as main component accounts for described swine excrement
The 0.4%～0.6% of gross mass, makes the potassium contents in described swine excrement be 0.7%～1.1% by adding described neutral potash fertilizer,
The Organic substance that described Nutrious fermented auxiliary agent ferments for sugar can be provided to carry out for described multidimensional composite enzyme bacterium；And include following
Preparation process:
Step one, by suitable quantity of water, described multidimensional composite enzyme bacterium and described Nutrious fermented auxiliary agent mix homogeneously are formed fermenting mixture
Disperse system, then utilizes the urine of the pig in the described swine excrement that scoop will be deposited on level land and pig manure to turn over throwing mix homogeneously, mixed
During closing described swine excrement, utilize atomized spray instrument that described fermenting mixture disperse system is uniformly sprayed onto described pig manure
Just, in, pre fermentation fertilizer is prepared；
Step 2, being packed together by the described pre fermentation fertilizer that step one prepares, the width of accumulation is 1.2～2 meters, highly
Being 0.6～1.2 meter, the in real time internal temperature of the described pre fermentation fertilizer that monitoring is piled up, when internal temperature reaches 65 DEG C pair
The described pre fermentation fertilizer piled up carries out turning over polishing working, makes the described pre fermentation fertilizer within accumulation and the institute of deposition surface
State pre fermentation fertilizer location swap, ferment 12～15 days until material darkens, in the shade face has white hypha to grow, temperature
The most significantly raised being considered as is become thoroughly decomposed completely, prepares decomposed manure；
Step 3, to step 2 prepare described in decomposed manure be sampled detecting potassium contents therein, then basis
Difference weighs the described neutral potash fertilizer required supplementation with, by described phosphate fertilizer with dicalcium phosphate as main component, described with tricresyl phosphate
Calcium is that the phosphate fertilizer of main component, described neutral potash fertilizer, described biological nitrogen fixation bacterium add a small amount of water and be mixed to form inanimate matter disperse system, so
After turn over decomposed manure described in throwing mixing and spray described inanimate matter disperse system simultaneously uniformly, i.e. prepare bio-organic fertilizer.
The pig manure bio-organic fertilizer of a kind of fermentation maturity the most according to claim 1, it is characterised in that: described Nutrious fermented
Auxiliary agent is the mixture of one or more in flour, rice flour, sweet potato powder, powdered soybean and brown sugar powder, and described fermentation battalion
The mass ratio supporting auxiliary agent and described biological nitrogen fixation bacterium is (5～15) 1.
The pig manure bio-organic fertilizer of a kind of fermentation maturity the most according to claim 1, it is characterised in that: described with di(2-ethylhexyl)phosphate
Calcium is that the phosphate fertilizer of main component is one or more in precipitated phosphate, thomas phosphate, calcium magnesium phosphate and defluorinated phosphate and mixes
Thing.
The pig manure bio-organic fertilizer of a kind of fermentation maturity the most according to claim 1, it is characterised in that: described with tricresyl phosphate
Calcium is the mixture that phosphate fertilizer is bone meal, ground phosphate rock or bone meal and ground phosphate rock of main component.
The pig manure bio-organic fertilizer of a kind of fermentation maturity the most according to claim 1, it is characterised in that: described biological nitrogen fixation
Bacterium is azospirillum, ditch millet nitrogen-fixing bacteria or azospirillum and the mixture of ditch millet nitrogen-fixing bacteria.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610741142.2A CN106316630A (en) | 2016-08-29 | 2016-08-29 | Biologic organic fertilizer with fermented and thoroughly decomposed pig manure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610741142.2A CN106316630A (en) | 2016-08-29 | 2016-08-29 | Biologic organic fertilizer with fermented and thoroughly decomposed pig manure |
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| Publication Number | Publication Date |
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| CN106316630A true CN106316630A (en) | 2017-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610741142.2A Withdrawn CN106316630A (en) | 2016-08-29 | 2016-08-29 | Biologic organic fertilizer with fermented and thoroughly decomposed pig manure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106986731A (en) * | 2017-05-19 | 2017-07-28 | 佛山市高明区生产力促进中心 | A kind of compoiste fertilizer for using live pig excrement to be fabricated to for base-material |
| CN111777443A (en) * | 2020-06-22 | 2020-10-16 | 广西伟恒生态农业有限公司 | Nitrogenous phosphate fertilizer and preparation method thereof |
| CN113582780A (en) * | 2021-08-12 | 2021-11-02 | 中国科学院城市环境研究所 | Phosphorus-rich and silicon-rich compost product prepared by adding yellow phosphorus slag and production method thereof |
-
2016
- 2016-08-29 CN CN201610741142.2A patent/CN106316630A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106986731A (en) * | 2017-05-19 | 2017-07-28 | 佛山市高明区生产力促进中心 | A kind of compoiste fertilizer for using live pig excrement to be fabricated to for base-material |
| CN111777443A (en) * | 2020-06-22 | 2020-10-16 | 广西伟恒生态农业有限公司 | Nitrogenous phosphate fertilizer and preparation method thereof |
| CN113582780A (en) * | 2021-08-12 | 2021-11-02 | 中国科学院城市环境研究所 | Phosphorus-rich and silicon-rich compost product prepared by adding yellow phosphorus slag and production method thereof |
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