CN106007843A - Method for producing water-soluble trace element fertilizer by embedding method - Google Patents
Method for producing water-soluble trace element fertilizer by embedding method Download PDFInfo
- Publication number
- CN106007843A CN106007843A CN201610324034.5A CN201610324034A CN106007843A CN 106007843 A CN106007843 A CN 106007843A CN 201610324034 A CN201610324034 A CN 201610324034A CN 106007843 A CN106007843 A CN 106007843A
- Authority
- CN
- China
- Prior art keywords
- trace element
- urea
- element fertilizer
- water
- producing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05C—NITROGENOUS FERTILISERS
- C05C3/00—Fertilisers containing other salts of ammonia or ammonia itself, e.g. gas liquor
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05C—NITROGENOUS FERTILISERS
- C05C9/00—Fertilisers containing urea or urea compounds
-
- 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
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biochemistry (AREA)
- Biotechnology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Microbiology (AREA)
- Molecular Biology (AREA)
- Fertilizers (AREA)
Abstract
The invention relates to a method for producing water-soluble trace element fertilizer by an embedding method, which comprises the following steps: the method comprises the steps of utilizing fruit tree branches as raw materials to obtain organic trace elements through microbial transformation, utilizing a low-grade alcohol solvent to dissolve out the organic trace elements, adding a proper amount of urea to dissolve after the solution is heated, accelerating urea crystallization by adopting a gradient cooling mode, filtering to obtain crystals, and drying or vacuum drying to obtain the finished product. The special embedding process adopted by the invention can avoid trace element poisoning. The fertilizer damage is easily caused by the excessive application of the trace elements, especially under the condition that the trace elements are directly contacted with the roots of crops. The invention utilizes the self characteristics of urea to uniformly wrap the trace elements, thereby effectively avoiding the trace element poisoning phenomenon of crops.
Description
Technical Field
The invention relates to a production method of a fertilizer, in particular to a production method of a trace element fertilizer, belonging to the technical field of fertilizer production.
Background
The trace elements are nutrients necessary for the normal biological functions of living organisms and the growth of plants, are closely related to the metabolism of proteins, lipids, polysaccharides, nucleic acids and vitamins, and play a role in regulating and controlling various physiological metabolic processes of plants. The crop growth process needs not only major elements such as nitrogen, phosphorus, potassium and the like, and medium elements such as sulfur, calcium, magnesium and the like, but also trace elements such as boron, zinc, manganese, iron, copper and the like. The synergistic effect can be achieved only under the condition that the proportion of each element is proper. If the proportion is not proper, the use effect is influenced by mutual restriction. The traditional agricultural production in China does not pay attention to balanced fertilization, 90% of crop production areas show insufficient trace elements, and the development of the trace element fertilizer with high efficiency, safety and strong adaptability has important significance for future agricultural production in China.
Chinese patents ZL200510130897.0, ZL200610125359.7, ZL201210331478.3 and ZL201210382951.0 relate to the production of trace element fertilizers by using steel waste residues, waste zinc-manganese batteries, pulp waste liquid and phosphated waste residues as raw materials, the production cost is low, but the fertilizer utilization rate is poor and the soil heavy metal standard is easy to exceed.
Chinese patents ZL921032096.X and ZL201110093683.6 relate to the production of glass state trace element fertilizer by using diboron trioxide and silicon dioxide as main raw materials, have certain use effect, but the production process is relatively complex.
In Chinese patent ZL200910065958.8, patent 201310425419.7, patent ZL201310094341.5 and patent ZL201410322864.5, gluconic acid, EDTA, aspartic acid and humic acid are respectively adopted as chelating agents to produce trace element fertilizers, the fertilizers have certain slow release effects, but the chelating rate is difficult to control accurately.
Chinese patents ZL201010165003.2 and 201210192294.3 relate to the production of trace element fertilizers by using earthworm excrement and sheep excrement as filling agents, and the fertilizers are relatively low in cost, but the production process is rough and the effect is unstable.
Disclosure of Invention
The invention provides a method for producing a water-soluble trace element fertilizer by an embedding method, aiming at the defects of the existing trace element fertilizer production technology.
The technical scheme for solving the technical problems is as follows:
a method for producing a water-soluble trace element fertilizer by an embedding method is characterized by comprising the following steps:
1) And (3) fermentation: placing a mixture consisting of 84-91 wt% of fruit tree branch powder, 1-2 wt% of glucose, 2-3 wt% of ammonium sulfate, 0.5-1 wt% of trace elements and 5-10 wt% of streptococcus bacterial liquid YIC24 at 20-60 ℃ for aerobic fermentation;
2) Leaching solution: adding 3-5 times of lower alcohol into the mixture after fermentation for solution leaching, wherein the lower alcohol is alcohol containing 1-4 carbon atoms, and filtering after leaching to obtain clear filtrate;
3) Dissolving urea: adding urea into the clear filtrate obtained in the step 2), adding 10-30 g of urea into every 100ml of filtrate, then heating to 50-60 ℃, and stirring until the urea is completely dissolved;
4) Gradient cooling: cooling the product dissolved in the step 3), reducing the temperature to 5-10 ℃ by adopting a gradient cooling mode, reducing the temperature by 5-10 ℃ per hour, keeping the temperature for 30-60 min, standing, and filtering to obtain urea crystals;
5) And (3) drying: drying the crystal at the temperature below 60 ℃, and controlling the water content of the product to be lower than 5% to obtain the trace element fertilizer.
Further, the trace elements in the step 1) refer to one or a mixture of more of selenium, manganese, boron and molybdenum.
Further, the fruit trees in the step 1) refer to pome fruit trees.
Further, the content of streptococcus liquid in the mixture in the step 1) is 5.5-7 wt%, and streptomycete YIC24 used in the invention is as follows: the institute of tobacco pipe coastal zone of Chinese academy of sciences is preserved in the institute of microorganism of Chinese academy of sciences in 2015, 12 months and 09 days, and the preservation number is CGMCC No.11848.
Further, the fermentation temperature in the step 1) is 25-45 ℃.
Further, the time of aerobic fermentation in the step 1) is 5 to 7 days.
Further, the lower alcohol in the step 2) is one of methanol, ethanol and isopropanol.
Further, the leaching time in the step 2) is 1 to 3 hours.
Further, the adding amount of the urea in the step 3) is 15-20 g of urea in each 100ml of filtrate.
Further, the temperature is decreased by 6-8 ℃ per hour through gradient temperature decrease in the step 4).
Further, the standing time in the step 4) is 2 to 5 hours.
The beneficial effects of the invention are:
1) The special embedding process adopted by the invention can avoid trace element poisoning. The excessive application of trace elements can easily cause fertilizer damage, especially under the condition that the trace elements are in direct contact with the roots of crops. The invention utilizes the self characteristics of urea to uniformly wrap the trace elements, thereby effectively avoiding the trace element poisoning phenomenon of crops.
2) The produced fertilizer has slow release and controlled release effects and accords with a crop growth nutrition demand curve. The trace elements are slowly released along with the utilization of nitrogen fertilizer by crops, so that the requirements of the crops on the trace elements in the growth process are met, and the effects of slow release and controlled release are achieved. Tests prove that the nutrient release rate in the initial stage (25 ℃, within 24 hours) of the trace elements is less than 2 percent, the cumulative nutrient release amount in 28 days is less than 40 percent, and the cumulative release rate in the nutrient release period (within 6 months) is more than 85 percent.
3) The production process is simple to operate, the fruit tree branches are fully utilized and can be reused, and the method is economical, environment-friendly, pollution-free, extremely low in equipment investment and easy for batch production.
Detailed Description
The principles and features of this invention are described below in conjunction with examples, which are included to illustrate the invention and not to limit the scope of the invention.
Example 1:
a method for producing water-soluble trace element fertilizer by an embedding method comprises the following steps:
1) Fermentation: placing a mixture consisting of 91wt% of apple tree branch powder, 1wt% of glucose, 2wt% of ammonium sulfate, 1wt% of manganese sulfate and 5wt% of streptococcus liquid YIC24 at 25-60 ℃ for aerobic fermentation for 5 days;
2) Solution leaching: adding 3 times of methanol into the mixture after fermentation for leaching for 2 hours, and filtering after leaching to obtain clear filtrate;
3) Dissolving urea: adding urea into the clear filtrate obtained in the step 2), adding 30g of urea into every 100ml of filtrate, heating to 50 ℃, and stirring until the urea is completely dissolved;
4) Gradient cooling: cooling the product dissolved in the step 3), reducing the temperature to 5 ℃ by adopting a gradient cooling mode, reducing the temperature by 5 ℃ per hour, keeping the temperature for 30min after the temperature is reduced, standing for 5 hours after the temperature is reduced, and filtering to obtain urea crystals;
5) And (3) drying: and (3) drying the urea crystal in a vacuum drying oven, controlling the vacuum degree to be-0.07 MPa, the temperature to be 60 ℃ and the weight loss of the product to be lower than 5%, stopping drying, and subpackaging to obtain the trace element fertilizer, wherein the manganese content in the finished product is 2.05wt% through detection, and the detection standard is NY/T1974.
Example 2:
a method for producing water-soluble trace element fertilizer by an embedding method comprises the following steps:
1) Fermentation: placing a mixture consisting of 84wt% of peach branch powder, 2wt% of glucose, 3wt% of ammonium sulfate, 1wt% of sodium selenite and 10wt% of streptococcus liquid YIC24 at the temperature of 20-45 ℃ for aerobic fermentation for 7 days;
2) Leaching solution: adding 5 times of ethanol into the mixture after fermentation for leaching for 1 hour, and filtering after leaching to obtain clear filtrate;
3) Dissolving urea: adding urea into the clear filtrate obtained in the step 2), adding 20g of urea into every 100ml of filtrate, heating to 60 ℃, and stirring until the urea is completely dissolved;
4) Gradient cooling: cooling the product dissolved in the step 3), reducing the temperature to 5 ℃ by adopting a gradient cooling mode, reducing the temperature by 8 ℃ per hour, keeping the temperature for 30min after the temperature is reduced, standing for 2 hours after the temperature is reduced, and filtering to obtain urea crystals;
5) And (3) drying: drying the urea crystals in a drying oven at 55 ℃, stopping drying after the weight loss of the product is lower than 5%, and subpackaging to obtain the trace element fertilizer; the selenium content in the finished product is 1.38wt% through detection, and the detection standard is NY/T1972.
Example 3:
a method for producing water-soluble trace element fertilizer by an embedding method comprises the following steps:
1) Fermentation: placing a mixture consisting of 88wt% of pear branch powder, 2wt% of glucose, 2wt% of ammonium sulfate, 0.5wt% of molybdenum sulfate and 7.5wt% of streptococcus bacterial liquid YIC24 at 25-45 ℃ for aerobic fermentation for 6 days;
2) Solution leaching: adding isopropanol with 4 times volume into the mixture after fermentation for leaching for 2 hours, and filtering after leaching to obtain clear filtrate;
3) Dissolving urea: adding urea into the clear filtrate obtained in the step 2), adding 10g of urea into every 100ml of filtrate, then heating to 50 ℃, and stirring until the urea is completely dissolved;
4) Gradient cooling: cooling the product dissolved in the step 3), reducing the temperature to 10 ℃ by adopting a gradient cooling mode, reducing the temperature by 10 ℃ per hour, keeping the temperature for 60min after the temperature is reduced, standing for 3 hours after the temperature is reduced, and filtering to obtain urea crystals;
5) And (3) drying: and (3) drying the urea crystals in a drying oven at the temperature of 60 ℃, stopping drying after the weight loss of the product is lower than 5%, and subpackaging to obtain the trace element fertilizer, wherein the content of molybdenum in the product is detected to be 0.98wt%, and the detection standard is NY/T1974.
Example 4:
a method for producing water-soluble trace element fertilizer by an embedding method comprises the following steps:
1) Fermentation: placing a mixture consisting of 88wt% of jujube branch powder, 1wt% of glucose, 2wt% of ammonium sulfate, 1wt% of boron trioxide and 8wt% of streptococcus liquid YIC24 at 25-45 ℃ for aerobic fermentation for 6 days;
2) Leaching solution: adding 4 times of glycol into the mixture after fermentation to carry out solution leaching for 2 hours, and filtering after leaching to obtain clear filtrate;
3) Dissolving urea: adding urea into the clear filtrate obtained in the step 2), adding 20g of urea into every 100ml of filtrate, heating to 50 ℃, and stirring until the urea is completely dissolved;
4) Gradient cooling: cooling the product dissolved in the step 3), reducing the temperature to 5 ℃ by adopting a gradient cooling mode, reducing the temperature by 10 ℃ per hour, keeping the temperature for 60min after the temperature is reduced, standing for 3 hours after the temperature is reduced, and filtering to obtain urea crystals;
5) And (3) drying: and (3) drying the urea crystal in a drying oven at the temperature of 60 ℃ until the weight loss of the product is lower than 5%, stopping drying, and subpackaging to obtain the trace element fertilizer, wherein the boron content in the product is 1.55wt% according to a detection standard NY/T1974.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A method for producing a water-soluble trace element fertilizer by an embedding method is characterized by comprising the following steps:
1) Fermentation: placing a mixture consisting of 84-91 wt% of fruit tree branch powder, 1-2 wt% of glucose, 2-3 wt% of ammonium sulfate, 0.5-1 wt% of trace elements and 5-10 wt% of streptococcus bacterial liquid YIC24 at 20-60 ℃ for aerobic fermentation;
2) Leaching solution: adding 3-5 times of lower alcohol into the mixture after fermentation for solution leaching, wherein the lower alcohol is alcohol containing 1-4 carbon atoms, and filtering after leaching to obtain clear filtrate;
3) Dissolving urea: adding urea into the clear filtrate obtained in the step 2), adding 10-30 g of urea into every 100ml of filtrate, then heating to 50-60 ℃, and stirring until the urea is completely dissolved;
4) Gradient cooling: cooling the product dissolved in the step 3), cooling to 5-10 ℃ by adopting a gradient cooling mode, cooling to 5-10 ℃ per hour, keeping for 30-60 min, standing, and filtering to obtain urea crystals;
5) And (3) drying: drying the crystal at the temperature below 60 ℃, and controlling the water content of the product to be lower than 5 percent to obtain the trace element fertilizer.
2. The method for producing a water-soluble trace element fertilizer by an embedding method according to claim 1, wherein the trace element in the step 1) is one or a mixture of selenium, manganese, boron and molybdenum.
3. The method for producing a water-soluble trace element fertilizer by an embedding method according to claim 1, wherein the fruit tree in the step 1) is a pome fruit tree.
4. The method for producing a water-soluble trace element fertilizer by an embedding method according to any one of claims 1 to 3, wherein the mixture in the step 1) contains 5.5 to 7wt% of streptococcus liquid YIC 24.
5. The method for producing a water-soluble trace-element fertilizer according to claim 4, wherein the fermentation temperature in the step 1) is 25 to 45 ℃.
6. The method for producing a water-soluble trace element fertilizer by an embedding method according to claim 5, wherein the time for aerobic fermentation in the step 1) is 5 to 7 days.
7. The method for producing a water-soluble trace element fertilizer by an embedding method according to any one of claims 1 to 3, wherein the lower alcohol in the step 2) is one of methanol, ethanol and isopropanol.
8. The method for producing a water-soluble trace-element fertilizer according to any one of claims 1 to 3, wherein the leaching time in the step 2) is 1 to 3 hours.
9. The method for producing a water-soluble trace-element fertilizer according to any one of claims 1 to 3, wherein the amount of urea added in step 3) is 15 to 20g per 100ml of filtrate.
10. The method for producing a water-soluble trace element fertilizer by an embedding method according to any one of claims 1 to 3, wherein the gradient temperature reduction in the step 4) is performed at a temperature of 6 to 8 ℃ per hour, and the standing time is 2 to 5 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610324034.5A CN106007843A (en) | 2016-05-17 | 2016-05-17 | Method for producing water-soluble trace element fertilizer by embedding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610324034.5A CN106007843A (en) | 2016-05-17 | 2016-05-17 | Method for producing water-soluble trace element fertilizer by embedding method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106007843A true CN106007843A (en) | 2016-10-12 |
Family
ID=57098357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610324034.5A Pending CN106007843A (en) | 2016-05-17 | 2016-05-17 | Method for producing water-soluble trace element fertilizer by embedding method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106007843A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107365189A (en) * | 2017-07-07 | 2017-11-21 | 烟台固特丽生物科技股份有限公司 | A kind of preparation method and application of PHB parcels Yellow humic acid fertilizer |
| CN107417329A (en) * | 2017-08-05 | 2017-12-01 | 烟台固特丽生物科技股份有限公司 | A kind of method that plant asphalt extraction triacontanol prepares fertilizer |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101265131A (en) * | 2007-03-13 | 2008-09-17 | 李启东 | Multifunctional organic long-acting biological green fertilizer |
| CN101723731A (en) * | 2009-02-25 | 2010-06-09 | 山东三方化工集团有限公司 | Environment-friendly long-acting compound fertilizer and preparation method thereof |
| CN101857512A (en) * | 2009-04-08 | 2010-10-13 | 陈兴业 | Production of organic fertilizer from erythorbate fermentation and crystallization waste liquor |
| CN102775214A (en) * | 2012-07-19 | 2012-11-14 | 茶陵湘东群利化工有限责任公司 | Clubbed compound microelement fertilizer, tubular compound insecticide and fertilizer and application thereof |
| CN105461465A (en) * | 2016-01-14 | 2016-04-06 | 山东森禾生物科技有限公司 | Chemosynthetic water-soluble fertilizer and production method and application thereof |
| CN105624066A (en) * | 2015-12-31 | 2016-06-01 | 中国科学院烟台海岸带研究所 | Cellulose producing actinomycete and application thereof |
-
2016
- 2016-05-17 CN CN201610324034.5A patent/CN106007843A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101265131A (en) * | 2007-03-13 | 2008-09-17 | 李启东 | Multifunctional organic long-acting biological green fertilizer |
| CN101723731A (en) * | 2009-02-25 | 2010-06-09 | 山东三方化工集团有限公司 | Environment-friendly long-acting compound fertilizer and preparation method thereof |
| CN101857512A (en) * | 2009-04-08 | 2010-10-13 | 陈兴业 | Production of organic fertilizer from erythorbate fermentation and crystallization waste liquor |
| CN102775214A (en) * | 2012-07-19 | 2012-11-14 | 茶陵湘东群利化工有限责任公司 | Clubbed compound microelement fertilizer, tubular compound insecticide and fertilizer and application thereof |
| CN105624066A (en) * | 2015-12-31 | 2016-06-01 | 中国科学院烟台海岸带研究所 | Cellulose producing actinomycete and application thereof |
| CN105461465A (en) * | 2016-01-14 | 2016-04-06 | 山东森禾生物科技有限公司 | Chemosynthetic water-soluble fertilizer and production method and application thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107365189A (en) * | 2017-07-07 | 2017-11-21 | 烟台固特丽生物科技股份有限公司 | A kind of preparation method and application of PHB parcels Yellow humic acid fertilizer |
| CN107417329A (en) * | 2017-08-05 | 2017-12-01 | 烟台固特丽生物科技股份有限公司 | A kind of method that plant asphalt extraction triacontanol prepares fertilizer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106631509A (en) | Special formula fertilizer for soilless culture lettuce and preparation method thereof | |
| CN104211499A (en) | High-phosphorus, high-zinc and high-magnesium liquid compound fertilizer as well as preparation method and application method thereof | |
| CN102260117B (en) | High-efficiency compound foliar fertilizer | |
| CN103193526A (en) | Preparation method of potassium yellowish-brown humate from lignite humic acid | |
| CN101928174A (en) | Humic acid water-soluble fertilizer | |
| CN107285950B (en) | Liquid organic water-soluble fertilizer and preparation method thereof | |
| CN104311205B (en) | All-element high-concentration water-culture flower nutrient mother solution and preparation method thereof | |
| CN104016736A (en) | Liquid organic fertilizer additive and preparation method | |
| CN111499459A (en) | Organic water-soluble fertilizer containing humic acid and preparation method thereof | |
| CN106007843A (en) | Method for producing water-soluble trace element fertilizer by embedding method | |
| CN109206235A (en) | A kind of humic acid Macroelement water-soluble fertilizer and preparation method thereof | |
| CN111777465A (en) | Liquid water-soluble fertilizer and preparation method thereof | |
| CN111018591A (en) | Nutrient solution for long-season cultivation of cherry tomatoes | |
| CN108456122B (en) | Special slow release fertilizer for peanuts and preparation method thereof | |
| CN111559938A (en) | Nutrient solution for increasing pine tree survival rate in arid area and preparation method thereof | |
| CN103910564A (en) | Tea seedling-transplanting seedling-protecting matrix suitable for soil with higher pH value and production process thereof | |
| CN111269052A (en) | Soilless culture step-by-step type fertilizer special for strawberries and preparation method thereof | |
| CN106748550B (en) | EM tree nutrient solution | |
| CN104529640A (en) | Leaf vegetable special fertilizer containing amino acid and preparing method thereof | |
| CN107311754A (en) | A kind of high phosphorus height potassium type Liquid Fertilizer and preparation method thereof | |
| CN114890829A (en) | Biochemical chelate fertilizer and its production process | |
| CN113277904A (en) | Pricklyash peel leaf fertilizer and preparation method and use method thereof | |
| CN111512879A (en) | Water and fertilizer integrated fertilization method for full bearing period of pears | |
| CN111087257A (en) | Hydroponic plant nutrient solution | |
| CN113045352A (en) | Liquid organic fertilizer for improving crop immunity and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161012 |
|
| RJ01 | Rejection of invention patent application after publication |