CN111848264A - Soil conditioner beneficial to vegetable cultivation and preparation method thereof - Google Patents
Soil conditioner beneficial to vegetable cultivation and preparation method thereof Download PDFInfo
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- CN111848264A CN111848264A CN202010486233.2A CN202010486233A CN111848264A CN 111848264 A CN111848264 A CN 111848264A CN 202010486233 A CN202010486233 A CN 202010486233A CN 111848264 A CN111848264 A CN 111848264A
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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
- 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
- C05F17/05—Treatments involving invertebrates, e.g. worms, flies or maggots
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- 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
- C05F17/20—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation using specific microorganisms or substances, e.g. enzymes, for activating or stimulating the treatment
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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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- 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
- C05G5/00—Fertilisers characterised by their form
- C05G5/10—Solid or semi-solid fertilisers, e.g. powders
- C05G5/12—Granules or flakes
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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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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Biochemistry (AREA)
- Biotechnology (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Microbiology (AREA)
- Molecular Biology (AREA)
- Tropical Medicine & Parasitology (AREA)
- Soil Sciences (AREA)
- Insects & Arthropods (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
- Fertilizers (AREA)
Abstract
The invention provides a soil conditioner beneficial to vegetable cultivation and a preparation method thereof, relating to the technical field of soil conditioners, wherein the soil conditioner comprises the following raw materials in parts by weight: 5-10 parts of calcium nitrate, 3-8 parts of monopotassium phosphate, 5-10 parts of potassium sulfate, 10-20 parts of carbonized rice hulls, 10-20 parts of shell powder, 10-20 parts of zeolite powder, 22-35 parts of thoroughly decomposed urban sludge and 20-40 parts of potassium-rich slate fermentation product. The soil conditioner has strong functionality and various raw materials, simultaneously contains organic and inorganic components and EM flora, can improve the nutrients of soil and improve the pH value of the soil, is scientific and reasonable in compounding of the raw materials, and is beneficial to cultivation and propagation of vegetables.
Description
Technical Field
The invention relates to the technical field of soil conditioners, in particular to a soil conditioner beneficial to vegetable cultivation and a preparation method thereof.
Background
The vegetable cultivation history in China is long, the vegetables are various, the product organs are diversified, the requirements of the growth and development rules on environmental conditions are different, and the conditions such as soil, moisture, temperature and the like are the basis of the cultivation of various vegetables. In the production process of vegetables, particularly greenhouse vegetables, due to the fact that the vegetables are continuously planted all year round, pesticide and chemical fertilizers are used more, soil obstacles such as field soil acidification, salinization and hardening are serious, crop diseases and insect pests are aggravated year by year, crop physiology is drought, ion exchange imbalance is caused, permeability is poor, root system breathing capacity is weak, metabolism is disordered, soil microbial activity is weakened, soil fertilizer and water supply performance is poor, and economic benefits are reduced. Therefore, it is very necessary to improve the soil in the vegetable field.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides the soil conditioner beneficial to vegetable cultivation and the preparation method thereof, the soil conditioner has strong functionality and various raw materials, simultaneously contains organic and inorganic components and EM flora, can improve the nutrient of soil and improve the pH value of the soil, is scientific and reasonable in compounding of the raw materials, and is beneficial to vegetable cultivation and propagation.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme:
a soil conditioner beneficial to vegetable cultivation comprises the following raw materials in parts by weight: 5-10 parts of calcium nitrate, 3-8 parts of monopotassium phosphate, 5-10 parts of potassium sulfate, 10-20 parts of carbonized rice hulls, 10-20 parts of shell powder, 10-20 parts of zeolite powder, 22-35 parts of thoroughly decomposed urban sludge and 20-40 parts of potassium-rich slate fermentation product.
Further, the soil conditioner raw material comprises the following components in parts by weight: 6-9 parts of calcium nitrate, 4-7 parts of monopotassium phosphate, 6-8 parts of potassium sulfate, 13-16 parts of carbonized rice hulls, 15-18 parts of shell powder, 14-17 parts of zeolite powder, 25-29 parts of thoroughly decomposed urban sludge and 25-35 parts of potassium-rich slate fermentation product.
Further, the soil conditioner raw material comprises the following components in parts by weight: 8 parts of calcium nitrate, 6 parts of monopotassium phosphate, 7 parts of potassium sulfate, 15 parts of carbonized rice hulls, 16 parts of shell powder, 16 parts of zeolite powder, 28 parts of decomposed municipal sludge and 30 parts of potassium-rich slate fermentation product.
Further, the preparation method of the decomposed municipal sludge comprises the following steps:
1) drying the municipal sludge to enable the water content of the municipal sludge to be 65-75%, and mixing the dried sludge and plant straws in a mass ratio of 10: mixing and putting the materials into a pile body according to the proportion of 0.5-2, sealing the vent holes, and performing anaerobic piling for 20-30 days;
2) after the step 1), adding earthworms into the fermentation pile, and carrying out aerobic decomposition for 50-80 days under the natural ventilation condition, wherein the adding density of the earthworms is 1-2kg/m2；
Further, in the step 2), after earthworms are put into the pile, turning the pile every other week, sampling, and adjusting the moisture according to the moisture content measured by pile sampling so that the moisture content of the pile is not lower than 55%.
Further, the preparation method of the potassium-rich slate fermentation product comprises the following steps: crushing the potassium-rich slate to a particle size of 220-260 meshes, and mixing the crushed potassium-rich slate particles with the waste molasses and the bean cake powder in a mass ratio of 9: 3: 2, and adding EM microbial inoculum with the total mass of 6-9% to ferment for 45-60 days at room temperature until the mixture is thoroughly decomposed, thus obtaining the potassium-rich slate ferment.
The preparation method of the soil conditioner beneficial to vegetable cultivation comprises the following steps: weighing and uniformly mixing 5-10 parts of calcium nitrate, 3-8 parts of monopotassium phosphate, 5-10 parts of potassium sulfate, 10-20 parts of carbonized rice hulls, 10-20 parts of shell powder, 10-20 parts of zeolite powder, 22-35 parts of decomposed municipal sludge and 20-40 parts of potassium-rich slate leavening, controlling the water content of the mixture to be 40-50%, and then carrying out disc granulation, wherein the rotating speed of a disc is 40r/min, and the inclination angle is 60 degrees.
(III) advantageous effects
The invention provides a soil conditioner beneficial to vegetable cultivation and a preparation method thereof, wherein the carbonized rice hulls, shell powder and zeolite powder are compounded for use, so that the pH value of soil can be improved, soil nutrients are increased, the respiration of the soil is improved, the respiration of degraded soil is close to that of farmland soil, the activity of related enzymes can be improved, the activity of urease, neutral phosphatase, catalase and cellulase is improved, the activity of polyphenol magnesium oxide is reduced, the formation of humus is facilitated, the decomposition of simple organic matters returned to the soil by plants is facilitated, the release of nutrients such as nitrogen and phosphorus is promoted, the resistance of the soil is improved, the absorption of heavy metals such as Cd and Pb by crops can be effectively reduced, the biological effectiveness of the heavy metals is reduced, and the harm of the heavy metals to plants is reduced.
In the preparation process of the decomposed municipal sludge adopted by the invention, earthworms utilize the own specific physiological functions to swallow the sludge, discharge earthworm excrement, promote the formation of a sludge granular structure, simultaneously improve the porosity of the sludge, reduce the volume weight, and greatly improve the quality of the sludge because the sludge granules treated by the earthworms are finer than those before treatment. The potassium-rich slate fermentation product is rich in organic matters, potassium, calcium, magnesium and other elements, and has effective viable count up to 6.98 x 10 11The fertilizer per gram can provide sufficient nutrients for soil and improve the pH value of the soil, and is more beneficial to vegetable cultivation.
The soil conditioner prepared by the invention has strong functionality and various raw materials, simultaneously contains organic and inorganic components and EM flora, can improve the nutrient of soil and the pH value of the soil, is scientific and reasonable in compounding of the raw materials, and is beneficial to cultivation and propagation of vegetables.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
a soil conditioner beneficial to vegetable cultivation comprises the following raw materials in parts by weight: 8 parts of calcium nitrate, 6 parts of monopotassium phosphate, 7 parts of potassium sulfate, 15 parts of carbonized rice hulls, 16 parts of shell powder, 16 parts of zeolite powder, 28 parts of decomposed municipal sludge and 30 parts of potassium-rich slate fermentation product.
The preparation method of the decomposed municipal sludge comprises the following steps:
1) drying the municipal sludge to enable the water content of the municipal sludge to be 65-75%, and mixing the dried sludge and plant straws in a mass ratio of 10: 1.5, mixing and putting the materials into a stack body, sealing the vent holes, and performing anaerobic composting for 30 days;
2) after the step 1), adding earthworms into the fermentation pile, and carrying out aerobic decomposition for 60 days under the natural ventilation condition, wherein the adding density of the earthworms is 1kg/m2And after earthworms are put into the reactor, turning and sampling the reactor every other week, and regulating the water content according to the water content measured by sampling the reactor to ensure that the water content of the reactor is not lower than 55%.
The preparation method of the potassium-rich slate fermentation product comprises the following steps: crushing the potassium-rich slate to the particle size of 240 meshes, and mixing the crushed potassium-rich slate particles with the waste molasses and the bean cake powder in a mass ratio of 9: 3: 2, and adding EM microbial inoculum with the total mass of 7 percent to ferment for 50 days at room temperature until the mixture is thoroughly decomposed, thus obtaining the potassium-rich slate ferment.
The preparation method of the soil conditioner beneficial to vegetable cultivation comprises the following steps: weighing and uniformly mixing 8 parts of calcium nitrate, 6 parts of monopotassium phosphate, 7 parts of potassium sulfate, 15 parts of carbonized rice hulls, 16 parts of shell powder, 16 parts of zeolite powder, 28 parts of decomposed municipal sludge and 30 parts of potassium-rich slate fermentation product, controlling the water content of the mixture to be 40-50%, and then carrying out disc granulation, wherein the rotating speed of a disc is 40r/min, and the inclination angle is 60 degrees.
Example 2:
a soil conditioner beneficial to vegetable cultivation comprises the following raw materials in parts by weight: 9 parts of calcium nitrate, 3 parts of monopotassium phosphate, 8 parts of potassium sulfate, 10 parts of carbonized rice hulls, 18 parts of shell powder, 10 parts of zeolite powder, 29 parts of decomposed urban sludge and 20 parts of potassium-rich slate fermentation product.
The preparation method of the decomposed municipal sludge comprises the following steps:
1) drying the municipal sludge to enable the water content of the municipal sludge to be 65-75%, and mixing the dried sludge and plant straws in a mass ratio of 10: 2, mixing and putting the mixture into a stack body, sealing the vent holes, and performing anaerobic composting for 20 days;
2) after the step 1), adding earthworms into the fermentation pile, and carrying out aerobic decomposition for 80 days under the natural ventilation condition, wherein the adding density of the earthworms is 2kg/m2After earthworms are put into the container, the container is turned and sampled every other week, and the water content is adjusted according to the water content measured by sampling the container so as to ensure that the container is full of earthwormsThe water content of the obtained stack is not less than 55%.
The preparation method of the potassium-rich slate fermentation product comprises the following steps: crushing the potassium-rich slate to a particle size of 220 meshes, and mixing the crushed potassium-rich slate particles with the waste molasses and the bean cake powder in a mass ratio of 9: 3: 2, and adding an EM microbial inoculum with the total mass of 9 percent to ferment for 60 days at room temperature until the mixture is thoroughly decomposed, thus obtaining the potassium-rich slate ferment.
The preparation method of the soil conditioner beneficial to vegetable cultivation comprises the following steps: weighing and uniformly mixing 9 parts of calcium nitrate, 3 parts of monopotassium phosphate, 8 parts of potassium sulfate, 10 parts of carbonized rice hulls, 18 parts of shell powder, 10 parts of zeolite powder, 29 parts of decomposed municipal sludge and 20 parts of potassium-rich slate fermentation product, controlling the water content of the mixture to be 40-50%, and then carrying out disc granulation, wherein the rotating speed of a disc is 40r/min, and the inclination angle is 60 degrees.
Example 3:
a soil conditioner beneficial to vegetable cultivation comprises the following raw materials in parts by weight: 6 parts of calcium nitrate, 8 parts of monopotassium phosphate, 6 parts of potassium sulfate, 20 parts of carbonized rice hulls, 15 parts of shell powder, 20 parts of zeolite powder, 25 parts of decomposed municipal sludge and 40 parts of potassium-rich slate fermentation product.
The preparation method of the decomposed municipal sludge, the preparation method of the potassium-rich slate fermentation product and the preparation method of the soil conditioner are the same as in example 1.
Example 4:
a soil conditioner beneficial to vegetable cultivation comprises the following raw materials in parts by weight: 10 parts of calcium nitrate, 4 parts of monopotassium phosphate, 10 parts of potassium sulfate, 13 parts of carbonized rice hulls, 20 parts of shell powder, 14 parts of zeolite powder, 35 parts of decomposed municipal sludge and 25 parts of potassium-rich slate fermentation product.
The preparation method of the decomposed municipal sludge, the preparation method of the potassium-rich slate fermentation product and the preparation method of the soil conditioner are the same as in example 1.
Example 5:
a soil conditioner beneficial to vegetable cultivation comprises the following raw materials in parts by weight: 5 parts of calcium nitrate, 7 parts of monopotassium phosphate, 5 parts of potassium sulfate, 16 parts of carbonized rice hulls, 10 parts of shell powder, 17 parts of zeolite powder, 22 parts of decomposed municipal sludge and 35 parts of potassium-rich slate fermentation product.
The preparation method of the decomposed municipal sludge, the preparation method of the potassium-rich slate fermentation product and the preparation method of the soil conditioner are the same as in example 1.
Test examples
A vegetable field for continuously planting vegetables for many years is selected, and is divided into two parts with equal area, namely a test area and a control area. The soil conditioner prepared in the embodiment 1 of the invention is used for soil turning improvement in a test area, and farmyard manure is used for soil turning improvement in a control area, wherein the use amounts of the soil conditioner and the farmyard manure are 100m per each2The dosage is 150 kg. The tomatoes are planted in the test area and the control area according to the same method under the same condition, and the yield of the tomatoes planted in the test area is 25.33% higher than that of the tomatoes planted in the control area through calculation, which shows that the soil conditioner prepared in the embodiment 1 of the invention has a remarkable effect on the yield increase of the tomatoes.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (7)
1. The soil conditioner beneficial to vegetable cultivation is characterized in that the soil conditioner comprises the following raw materials in parts by weight: 5-10 parts of calcium nitrate, 3-8 parts of monopotassium phosphate, 5-10 parts of potassium sulfate, 10-20 parts of carbonized rice hulls, 10-20 parts of shell powder, 10-20 parts of zeolite powder, 22-35 parts of thoroughly decomposed urban sludge and 20-40 parts of potassium-rich slate fermentation product.
2. The soil conditioner beneficial to vegetable cultivation as claimed in claim 1, wherein the soil conditioner raw material comprises the following components in parts by weight: 6-9 parts of calcium nitrate, 4-7 parts of monopotassium phosphate, 6-8 parts of potassium sulfate, 13-16 parts of carbonized rice hulls, 15-18 parts of shell powder, 14-17 parts of zeolite powder, 25-29 parts of thoroughly decomposed urban sludge and 25-35 parts of potassium-rich slate fermentation product.
3. The soil conditioner for vegetable cultivation as claimed in claim 2, wherein the soil conditioner raw material comprises the following components in parts by weight: 8 parts of calcium nitrate, 6 parts of monopotassium phosphate, 7 parts of potassium sulfate, 15 parts of carbonized rice hulls, 16 parts of shell powder, 16 parts of zeolite powder, 28 parts of decomposed municipal sludge and 30 parts of potassium-rich slate fermentation product.
4. A soil conditioner for improving vegetable cultivation as claimed in any one of claims 1 to 3, wherein said method for preparing decomposed municipal sludge comprises the steps of:
1) drying the municipal sludge to enable the water content of the municipal sludge to be 65-75%, and mixing the dried sludge and plant straws in a mass ratio of 10: mixing and putting the materials into a pile body according to the proportion of 0.5-2, sealing the vent holes, and performing anaerobic piling for 20-30 days;
2) after the step 1), adding earthworms into the fermentation pile, and carrying out aerobic decomposition for 50-80 days under the natural ventilation condition, wherein the adding density of the earthworms is 1-2kg/m2。
5. A soil conditioner for improving vegetable cultivation as claimed in claim 4, wherein in the step 2), after the earthworms are thrown, the stack is turned over every other week, the sampling is performed, and the moisture content of the stack is adjusted so as not to be lower than 55% based on the moisture content measured by the stack sampling.
6. A soil conditioner for improving vegetable cultivation as claimed in any one of claims 1 to 3, wherein said potassium-rich slate ferment is prepared by a method comprising: crushing the potassium-rich slate to a particle size of 220-260 meshes, and mixing the crushed potassium-rich slate particles with the waste molasses and the bean cake powder in a mass ratio of 9: 3: 2, and adding EM microbial inoculum with the total mass of 6-9% to ferment for 45-60 days at room temperature until the mixture is thoroughly decomposed, thus obtaining the potassium-rich slate ferment.
7. A soil conditioner for vegetable cultivation as claimed in any one of claims 1 to 3, wherein the soil conditioner is prepared by a method comprising: weighing and uniformly mixing 5-10 parts of calcium nitrate, 3-8 parts of monopotassium phosphate, 5-10 parts of potassium sulfate, 10-20 parts of carbonized rice hulls, 10-20 parts of shell powder, 10-20 parts of zeolite powder, 22-35 parts of decomposed municipal sludge and 20-40 parts of potassium-rich slate leavening, controlling the water content of the mixture to be 40-50%, and then carrying out disc granulation, wherein the rotating speed of a disc is 40r/min, and the inclination angle is 60 degrees.
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| CN202010486233.2A CN111848264A (en) | 2020-06-01 | 2020-06-01 | Soil conditioner beneficial to vegetable cultivation and preparation method thereof |
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| CN202010486233.2A CN111848264A (en) | 2020-06-01 | 2020-06-01 | Soil conditioner beneficial to vegetable cultivation and preparation method thereof |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101100401A (en) * | 2007-07-05 | 2008-01-09 | 中国科学院地球化学研究所 | Organic composite potassium fertilizer and its producing method |
| CN101412573A (en) * | 2008-11-15 | 2009-04-22 | 伏小勇 | Method for processing city life sludge by using angleworm |
| CN101857346A (en) * | 2010-05-24 | 2010-10-13 | 北京龙威昌生物科技有限公司 | Biological processing technology of earthworms contained in municipal sludge |
| CN103539489A (en) * | 2013-11-01 | 2014-01-29 | 内蒙古科技大学 | Integrated method for preparing potassium fertilizer from Bayan Obo potassium-rich slate |
| CN106336873A (en) * | 2016-08-25 | 2017-01-18 | 董晓 | Method for preparing soil modifier by using earthworm to treat urban sludge |
| CN106380335A (en) * | 2016-08-27 | 2017-02-08 | 安徽省司尔特肥业股份有限公司 | Soil-improving continuous-cropping-resistant compound fertilizer for vegetables and preparation method thereof |
| CN106478289A (en) * | 2016-09-18 | 2017-03-08 | 广西大学 | A kind of soil conditioner being applied to vegetable plot |
-
2020
- 2020-06-01 CN CN202010486233.2A patent/CN111848264A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101100401A (en) * | 2007-07-05 | 2008-01-09 | 中国科学院地球化学研究所 | Organic composite potassium fertilizer and its producing method |
| CN101412573A (en) * | 2008-11-15 | 2009-04-22 | 伏小勇 | Method for processing city life sludge by using angleworm |
| CN101857346A (en) * | 2010-05-24 | 2010-10-13 | 北京龙威昌生物科技有限公司 | Biological processing technology of earthworms contained in municipal sludge |
| CN103539489A (en) * | 2013-11-01 | 2014-01-29 | 内蒙古科技大学 | Integrated method for preparing potassium fertilizer from Bayan Obo potassium-rich slate |
| CN106336873A (en) * | 2016-08-25 | 2017-01-18 | 董晓 | Method for preparing soil modifier by using earthworm to treat urban sludge |
| CN106380335A (en) * | 2016-08-27 | 2017-02-08 | 安徽省司尔特肥业股份有限公司 | Soil-improving continuous-cropping-resistant compound fertilizer for vegetables and preparation method thereof |
| CN106478289A (en) * | 2016-09-18 | 2017-03-08 | 广西大学 | A kind of soil conditioner being applied to vegetable plot |
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