CN103408345B - Humic acid synergistic composite fertilizer and preparation method thereof - Google Patents
Humic acid synergistic composite fertilizer and preparation method thereof Download PDFInfo
- Publication number
- CN103408345B CN103408345B CN201310241956.6A CN201310241956A CN103408345B CN 103408345 B CN103408345 B CN 103408345B CN 201310241956 A CN201310241956 A CN 201310241956A CN 103408345 B CN103408345 B CN 103408345B
- Authority
- CN
- China
- Prior art keywords
- humic acid
- peat
- composite fertilizer
- weathered coal
- active
- 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.)
- Expired - Fee Related
Links
Landscapes
- Fertilizers (AREA)
Abstract
The invention discloses a humic acid synergistic composite fertilizer and a preparation method thereof. The humic acid synergistic composite fertilizer is refined by selecting and using high-quality raw materials, namely nitrogen, phosphorus and potassium, matching with an appropriate amount of high-activity humic acid and trace elements, especially extracting the humic acid from weathered coal and peat by adopting an advanced oxidation technology and adopting an advanced granulating process, wherein the high utilization ratio of the raw materials used for producing the humic acid is high. The humic acid synergistic composite fertilizer disclosed by the invention is high in humic acid transformation ratio and full in nutrient, can not only achieve the high output and good quality of crops, but also improve the soil structure, and achieves an obvious yield-increasing effect by being subjected to a plot experiment on the crops, such as soybeans and corns.
Description
Technical field
The present invention relates to a kind of composite fertilizer, particularly relate to a kind of Humic acid synergistic composite fertilizer and preparation method.
Background technology
China is fertilizer market maximum in the world, and along with the continuous increase of China's farmland fertilizer amount of application, chemical fertilizer supply is still comparatively nervous, and easily hardening in the arable land of year after year using chemical fertilizer, affects the growth of farm crop.In the face of current China Soil structure is seriously damaged, the phenomenon that soil fertility declines, strengthening the application of humic acids in agricultural fertilizer is a kind of very effective method.
At present, the 70%-80% of developed country's chemical fertilizer ultimate production produces in the mode of composite fertilizer and applies in the world, although China's chemistry chemical fertilizer constantly increases in production and practical, number, the several of the face minute of chemical fertilizer total amount only put in composite fertilizer, with to compare gap abroad larger.China is large agricultural country, there are 16.8 hundred million mu of arable lands, over half be in, low-yield land, China's drought and water-scarce area accounts for the half of national total area under cultivation, therefore, combating a natural disaster mitigation is the important step realizing agricultural produce, and humic acid fertilizer has larger advantage in the resistance improving farm crop, the fertilizer of agricultural all be unable to do without humic acids, is all that carrier is equipped with the element such as various trace elements and nitrogen, phosphorus, potassium and makes with humic acids.Humic acid fertilizer can not only meet the needs of an agriculture featuring high yields, fine quality and high efficiency sustainable development, and it is in short supply fundamentally to solve China's organic fertilizer again, and long-term a large amount of problem such as soil compaction, desertification degeneration using chemical fertilizer to cause.
Humic acid complex fertilizer on comprehensive market in recent years finds, ubiquity humic acids content is lower, has influence on fertilizer efficiency with this, and the not high reason of humic acids content is that feedstock conversion becomes the transformation efficiency of humic acids not high, like this except affecting fertilizer efficiency, also cause the waste of humic acids raw materials for production.
Summary of the invention
The object of this invention is to provide a kind of humic acids transformation efficiency high, nutrient is comprehensive, can reach high crop yield high-quality, can improve again the Humic acid synergistic composite fertilizer of Soil structure.
Another object of the present invention is to provide a kind of preparation method of Humic acid synergistic composite fertilizer.
A kind of Humic acid synergistic composite fertilizer is made up of the raw material of following weight part:
Weathered coal 30-50 part, peat 30-50 part, urea 20-40 part, phosphate fertilizer 20-40 part, potash fertilizer 20-40 part, micro-10-30 part, tackiness agent 3-9 part, water are appropriate.
Preferably, weathered coal 40 parts, 40 parts, peat, 30 parts, urea, 30 parts, phosphate fertilizer, 30 parts, potash fertilizer, trace element 20 parts, 5 parts, tackiness agent, water are appropriate.
The humic acids content of described weathered coal and peat is respectively 40-60%, 30-50%.
Described phosphate fertilizer is calcium superphosphate and monoammonium phosphate at least one.
Described potash fertilizer is Repone K and potassium sulfate at least one.
Described trace element is boric acid, ferrous sulfate, zinc sulfate, manganous sulfate, ammonium molybdate, copper sulfate, accounts for 30% of micro-total amount, 20%, 15%, 15%, 15%, 5% respectively.
Described tackiness agent is bentonite.
A kind of preparation method of Humic acid synergistic composite fertilizer:
1. weathered coal pulverized 80-150 mesh sieve, evenly sprayed into the H that concentration is 6-13%
2o
2, preferably spray into H
2o
2concentration be 9%, coal is sealed oxidation after 24 hours, dries under 80 DEG C of temperature condition.Add the sodium hydroxide solution of 2% in weathered coal after oxidation, after 80-90 DEG C of stirred in water bath 30min, leave standstill to room temperature, after adding ammonium bicarbonate soln and potassium sulfite solution stirring 60min respectively, obtain active weathered coal.
2. the nitric acid of peat 5-6mol/l, at the temperature of 80-90 DEG C, carry out nitration reaction 2 hours, centrifugation goes out supernatant liquor, dries under 80 DEG C of temperature condition.Air-dry product add the potassium hydroxide solution of 3%, half an hour is heated in 80-90 DEG C of water-bath, obtains active peat.
3. in active weathered coal obtained above and active peat, urea, calcium superphosphate, monoammonium phosphate, Repone K, potassium sulfate, zinc sulfate, ammonium molybdate, boric acid, ferrous sulfate, manganous sulfate, copper sulfate is added respectively, stirring under normal temperature in stirrer makes each component mix for 1 hour, puts into after 60-70 DEG C big vast case is dried and grinds powdered.
4. the powder be ground into step 3. obtained adds binding agent, in tablets press granulation composite fertilizer.
As everyone knows, with nitric acid as oxidant process peat, the concentration of its nitric acid directly has influence on the humic acids content in peat, for finding out desirable concentration of nitric acid further, the relationship experiments of different concentration of nitric acid and humic acid in peat content has been done in my company laboratory, to find out the concentration of nitric acid of optimal process peat.Test method is as follows:
1, choose different sources ground, three peat samples that initial humic acids content is different, are numbered I peat samples, II peat samples, III peat samples respectively.
2, sample oxidation treatment step: take a certain amount of peat in beaker (or test tube), add a certain amount of oxygenant one nitric acid, stirring heating 1 hour in 80-90 DEG C of water-bath, centrifugation goes out supernatant liquor, precipitates through air-dry (or oven dry) for subsequent use.
3, liquid preparation to be measured: take air-dry sample 0.2 gram, be placed in 250 milliliters of Erlenmeyer flasks, add 1%NaOH35 milliliter, funnel is inserted at bottleneck, the water-bath of 80-90 DEG C is heated half an hour (noting shake), after cooling by leach liquor together with residue-with proceeding in 100 milliliters of volumetric flasks, use distilled water constant volume.Again through Medium speed filter paper filter (discarding 10 initial ml solns), get 5 milliliters broad carry out analysiss mensuration.By 21 K of Ministry of Agriculture MT mono-promulgated by the ministries or commissions of the Central Government 32-79
2cr
2o
7method analyzes humic acid total amount.
Experiment finds that the concentration of nitric acid directly has influence on the humic acid content in active peat.In table 1
Content of humic acid in table 1 concentration of nitric acid and active peat
As can be seen from the above table, the peat of initial different humic acids content, after nitric acid treatment, the humic acids content in peat is all improved, when concentration of nitric acid is 5.5mol/l, humic acids content in peat reaches the highest, later along with the increase of concentration of nitric acid, the humic acids content in peat starts again to decline, therefore, be 5.5mol/l process peat with concentration of nitric acid, the humic acids obtained is maximum.
The present invention adopts hydrogen peroxide to carry out oxidation as oxygenant to weathered coal to have good advantage, because the oxidation susceptibility of hydrogen peroxide is gentleer, the bacterial classification in weathered coal can not be killed, and other group or element can not be introduced in the reaction, be a kind of simple and easy to do method improving Humic Acid Production Rate.
Advantage of the present invention: the Humic acid synergistic composite fertilizer that the present invention produces, select high-quality nitrogen, phosphorus, potassium raw material, and be equipped with appropriate high-activity humic acid and trace element, the new green environment protection compound manure integrating organic and inorganic-biological regulation, the particularly first-selected fertilizer of wheat, seeding corn and other crops.1, stimulate plant physiology metabolism, enhancing development, make plant cane healthy and strong, branches and leaves are luxuriant, strengthen photosynthesis, accelerate various nutrient to fruit, seed conveying, improve crop yield; 2, improve Soil structure, regulate the soil water, fertilizer, gas, thermal conditions, improve soil fertilizer water retention capacity, have good improving effect to lean soil and new land reclamation, saltings; 3, activating soil available nutrient, reduces soil to phosphorus fixation, improves nitrogen, phosphorus, potassium nutrition utilization ratio, promotes that crop root is to the absorption of nutrient; 4, improve crop quality, promote the synthesis of protein, starch, sugar, fat and various VITAMIN, make agricultural-food plentiful abundant, best in quality, nutritious.
Field experiment data
1, for studying thing soybean, corn
2, adopt randomized block experiment design for method for testing test, repeat 3 times, plot area 35m
2, be rich No. 5 of literary composition for examination soybean varieties, for examination corn variety for chatting beautiful No. 18.To use Humic acid synergistic composite fertilizer for test group, using common chemical fertilizer is control group.
3, fertilizing method all makees base manure, and the every plot area of test group uses 3 kilograms of Humic acid synergistic composite fertilizers, and the every plot area of control group uses 3 kilograms of inorganic fertilizers.
4, test-results:
Soybean plot experiment result proves, Humic acid synergistic composite fertilizer for the proterties of soybean, test group plant height, bear pods number and 100-grain weight be all better than control group.In table 2
Table 2 liang group compares soybean trait impact
On the impact of soybean yields, test group is control group every mu volume increase 20.1 kilograms comparatively, and stimulation ratio is 13.6%.In table 3
The impact of table 3 liang group on soybean yields is compared
Corn plot experiment result proves, Humic acid synergistic composite fertilizer is for the proterties of corn, and test group is all better than control group at plant height, spike length, line number, row grain number and 100-grain weight.In table 4
Table 4 liang group compares corn character impact
On the impact of corn yield, test group is control group every mu volume increase 63.9 kilograms comparatively, and stimulation ratio is 10.6%.In table 5
The impact of table 5 liang group on corn yield is compared
Embodiment
Embodiment 1
1. take weathered coal 40kg and pulverized 100 mesh sieves, evenly spray into the H that concentration is 9%
2o
2, coal is sealed oxidation after 24 hours, dries under 80 DEG C of temperature condition.Add the sodium hydroxide solution of 2% in weathered coal after oxidation, after 85 DEG C of stirred in water bath 30min, leave standstill to room temperature, after adding ammonium bicarbonate soln and potassium sulfite solution stirring 60min respectively, obtain active weathered coal.
2. take the nitric acid of peat 40kg 5.5mol/l, at the temperature of 85 DEG C, carry out nitration reaction 2 hours, centrifugation goes out supernatant liquor, dry under 80 DEG C of temperature condition, air-dry product add the potassium hydroxide solution of 3%, half an hour is heated in 85 DEG C of water-baths, obtains active peat.
3. in active weathered coal obtained above and active peat, urea 30kg, monoammonium phosphate 30kg, potassium sulfate 30kg, micro-20kg is added respectively, stirring under normal temperature in stirrer makes each component mix for 1 hour, puts into after 65 DEG C big vast casees are dried and grinds powdered.
4. the powder be ground into step 3. obtained adds bentonite 5kg, in tablets press granulation composite fertilizer.
Embodiment 2
1. take weathered coal 30kg and pulverized 110 mesh sieves, evenly spray into the H that concentration is 6%
2o
2, coal is sealed oxidation after 24 hours, dries under 80 DEG C of temperature condition.Add the sodium hydroxide solution of 2% in weathered coal after oxidation, after 85 DEG C of stirred in water bath 30min, leave standstill to room temperature, after adding ammonium bicarbonate soln and potassium sulfite solution stirring 60min respectively, obtain active weathered coal.
2. take the nitric acid of peat 50kg 5mol/l, at the temperature of 85 DEG C, carry out nitration reaction 2 hours, centrifugation goes out supernatant liquor, dry under 80 DEG C of temperature condition, air-dry product add the potassium hydroxide solution of 3%, half an hour is heated in 85 DEG C of water-baths, obtains active peat.
3. in active weathered coal obtained above and active peat, urea 40kg, calcium superphosphate 40kg, Repone K 40kg, micro-30kg is added respectively, stirring under normal temperature in stirrer makes each component mix for 1 hour, puts into after 70 DEG C big vast casees are dried and grinds powdered.
4. the powder be ground into step 3. obtained adds bentonite 9kg, in tablets press granulation composite fertilizer.
Embodiment 3
1. take weathered coal 50kg and pulverized 120 mesh sieves, evenly spray into the H that concentration is 13%
2o
2, coal is sealed oxidation after 24 hours, dries under 80 DEG C of temperature condition.Add the sodium hydroxide solution of 2% in weathered coal after oxidation, after 85 DEG C of stirred in water bath 30min, leave standstill to room temperature, after adding ammonium bicarbonate soln and potassium sulfite solution stirring 60min respectively, obtain active weathered coal.
2. take the nitric acid of peat 30kg 6mol/l, at the temperature of 85 DEG C, carry out nitration reaction 2 hours, centrifugation goes out supernatant liquor, dry under 80 DEG C of temperature condition, air-dry product add the potassium hydroxide solution of 3%, half an hour is heated in 85 DEG C of water-baths, obtains active peat.
3. in active weathered coal obtained above and active peat, urea 20kg, calcium superphosphate and monoammonium phosphate 20kg, Repone K and potassium sulfate 20kg, micro-10kg is added respectively, stirring under normal temperature in stirrer makes each component mix for 1 hour, puts into after 60 DEG C big vast casees are dried and grinds powdered.
4. the powder be ground into step 3. obtained adds bentonite 3kg, in tablets press granulation composite fertilizer.
Claims (1)
1. a preparation method for Humic acid synergistic composite fertilizer, comprises the following steps: 1. weathered coal pulverized 80-150 mesh sieve, evenly sprays into the H that concentration is 9%
2o
2coal is sealed oxidation after 24 hours, dry under 80 DEG C of temperature condition, the sodium hydroxide solution of 2% is added in weathered coal after oxidation, after 80-90 DEG C of stirred in water bath 30min, leave standstill to room temperature, after adding ammonium bicarbonate soln and potassium sulfite solution stirring 60min respectively, obtain active weathered coal; 2. the nitric acid of peat 5.5mol/L, at the temperature of 80-90 DEG C, carry out nitration reaction 2 hours, centrifugation goes out supernatant liquor, dry under 80 DEG C of temperature condition, air-dry product add the potassium hydroxide solution of 3%, half an hour is heated in 80-90 DEG C of water-bath, obtains active peat; 3. in active weathered coal obtained above and active peat, urea, calcium superphosphate, monoammonium phosphate, Repone K, potassium sulfate, zinc sulfate, ammonium molybdate, boric acid, ferrous sulfate, manganous sulfate, copper sulfate is added respectively, stirring under normal temperature in stirrer makes each component mix for 1 hour, puts into after 60-70 DEG C big vast case is dried and grinds powdered; 4. the powder be ground into step 3. obtained adds binding agent, in tablets press granulation composite fertilizer, it is characterized in that described step 1. in spray into H
2o
2concentration be 9%, described step 2. in the nitric acid of peat 5.5mol/L carry out nitration reaction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310241956.6A CN103408345B (en) | 2013-06-19 | 2013-06-19 | Humic acid synergistic composite fertilizer and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310241956.6A CN103408345B (en) | 2013-06-19 | 2013-06-19 | Humic acid synergistic composite fertilizer and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103408345A CN103408345A (en) | 2013-11-27 |
| CN103408345B true CN103408345B (en) | 2015-05-20 |
Family
ID=49601404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310241956.6A Expired - Fee Related CN103408345B (en) | 2013-06-19 | 2013-06-19 | Humic acid synergistic composite fertilizer and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103408345B (en) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103664364A (en) * | 2013-12-03 | 2014-03-26 | 河南金地宝生态肥业有限公司 | Chelated three-ammonium compound and preparation method thereof |
| CN103787789B (en) * | 2013-12-22 | 2015-12-30 | 黄翔 | A kind of natural green peanut Drug coating and preparation method |
| CN103922844B (en) * | 2014-04-19 | 2016-05-11 | 中农舜天生态肥业有限公司 | A kind of containing humic acid rush fertilising and preparation method |
| CN105152814A (en) * | 2015-10-13 | 2015-12-16 | 史丹利化肥宁陵有限公司 | Synchronous slow-release humic acid fertilizer produced by using high tower process and production method of synchronous slow-release humic acid fertilizer |
| CN105347983A (en) * | 2015-12-23 | 2016-02-24 | 山东农业大学 | Special super-large-granule humic acid fertilizer for fruit trees and preparation method of special super-large-granule humic acid fertilizer |
| CN105924283B (en) * | 2016-04-29 | 2017-09-29 | 武汉皓达农业科技有限公司 | A kind of preparation method of colourless organic water-soluble fertilizer |
| CN106045688A (en) * | 2016-06-01 | 2016-10-26 | 卞佳林 | Preparation method of humic acid compound fertilizer |
| WO2019040460A2 (en) * | 2017-08-21 | 2019-02-28 | Pro Farm Technologies Oy | Soluble fertilizer formulation and method for use thereof |
| CN107382562A (en) * | 2017-09-20 | 2017-11-24 | 阿米巴南京生物技术有限责任公司 | A kind of apple activation phosphorus organic fertilizer and preparation method thereof |
| CN108546555A (en) * | 2018-05-04 | 2018-09-18 | 保山保农农业开发股份有限公司 | A kind of soil conditioner and preparation method thereof |
| CN111138684A (en) * | 2019-12-31 | 2020-05-12 | 山东胜伟盐碱地科技有限公司 | Method for extracting humic acid from lignite |
| CN111233550B (en) * | 2020-01-19 | 2021-11-23 | 浙江丰瑜生态科技股份有限公司 | Humic acid water-soluble fertilizer suitable for hickory planting and preparation method and application thereof |
| CN111423283A (en) * | 2020-03-09 | 2020-07-17 | 沃博特生物科技有限公司 | Method for producing humic acid compound fertilizer by treating weathered coal through acidification-ammoniation |
| CN111646839A (en) * | 2020-05-21 | 2020-09-11 | 河南捷农生化有限公司 | Humic acid compound fertilizer and preparation method thereof |
| CN113248321A (en) * | 2021-05-19 | 2021-08-13 | 东华大学 | Preparation method of light-operated slow-release fulvic acid fertilizer capable of repairing heavy metals |
| CN115073219A (en) * | 2022-08-08 | 2022-09-20 | 甘肃科竟园生物肥业有限公司 | Production method of organic-inorganic compound fertilizer |
| CN116253604A (en) * | 2023-04-10 | 2023-06-13 | 辽宁金秋肥业有限责任公司 | Preparation method of organic-inorganic compound fertilizer containing high-activity humic acid |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1343646A (en) * | 2000-09-16 | 2002-04-10 | 新疆汇通旱地龙腐植酸有限责任公司 | Liquid fertilizer for flower |
| CN1629106A (en) * | 2003-12-19 | 2005-06-22 | 中国科学院沈阳应用生态研究所 | Quick dissolving fertilizer containing nitro ammonium humate and method for preparing same |
| CN1919802A (en) * | 2006-08-23 | 2007-02-28 | 杭州艾可泰投资有限公司 | Humic acid highly effective composite fertilizer and preparation method thereof |
| CN101041600A (en) * | 2007-03-16 | 2007-09-26 | 阴高鹏 | Humic acid composite material and preparation method thereof |
| CN101768031A (en) * | 2009-12-30 | 2010-07-07 | 马增禄 | Preparation method of humic acid organic fertilizer |
-
2013
- 2013-06-19 CN CN201310241956.6A patent/CN103408345B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1343646A (en) * | 2000-09-16 | 2002-04-10 | 新疆汇通旱地龙腐植酸有限责任公司 | Liquid fertilizer for flower |
| CN1629106A (en) * | 2003-12-19 | 2005-06-22 | 中国科学院沈阳应用生态研究所 | Quick dissolving fertilizer containing nitro ammonium humate and method for preparing same |
| CN1919802A (en) * | 2006-08-23 | 2007-02-28 | 杭州艾可泰投资有限公司 | Humic acid highly effective composite fertilizer and preparation method thereof |
| CN101041600A (en) * | 2007-03-16 | 2007-09-26 | 阴高鹏 | Humic acid composite material and preparation method thereof |
| CN101768031A (en) * | 2009-12-30 | 2010-07-07 | 马增禄 | Preparation method of humic acid organic fertilizer |
Non-Patent Citations (1)
| Title |
|---|
| 硝基腐植酸生产工艺及生物活性的研究;赵春山等;《哈尔滨理工大学学报》;20031231;第8卷(第6期);第70-72页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103408345A (en) | 2013-11-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103408345B (en) | Humic acid synergistic composite fertilizer and preparation method thereof | |
| CN103588583B (en) | A kind of tea tree bio-organic fertilizer special and preparations and applicatio method thereof | |
| CN101768031B (en) | Preparation method of humic acid organic fertilizer | |
| CN104086317B (en) | A kind of Fructus Vitis viniferae ecological organic fertilizer and preparation method thereof | |
| CN103214317A (en) | Active amino acid water-soluble fertilizer as well as preparation method and application thereof | |
| CN103274827A (en) | Special microbial fertilizer for Magnolia biloba | |
| CN105175174A (en) | Biochar slow release base fertilizer special for wheat and preparation method thereof | |
| CN103864534B (en) | A kind of fruit-specific fertilizer containing algae component and preparation method thereof | |
| CN105503471A (en) | Pasty sea algae functional organic fertilizer and production process | |
| CN105777263A (en) | Water-soluble fertilizer containing alginate and various nutrients and preparation method of water-soluble fertilizer | |
| CN104446984B (en) | A kind of quinoa special fertilizer and preparation method thereof | |
| CN104058836A (en) | Organic fertilizer using attapulgite as carrier and preparation method thereof | |
| CN102584429A (en) | High-concentration ecological compound fertilizer, preparation method and application in agricultural and forestry production | |
| CN106220364B (en) | Composite foliar fertilizer and preparation method and application thereof | |
| CN104817410A (en) | Special fertilizer with rich selenium for grape | |
| CN108440189B (en) | Compound fertilizer | |
| CN102417425A (en) | Novel ecological slow release carbamide compound, and preparation method and application thereof in production of agriculture or forestry | |
| CN104003781A (en) | Betel nut organic mixed fertilizer | |
| CN105294180B (en) | A kind of natural plants nutrient solution and its application | |
| CN105130530A (en) | Liquid fertilizer for improving soil planting conditions and preparation method thereof | |
| CN101260011A (en) | Humic acid silicon selenium fertilizer | |
| CN106146212A (en) | The cultural method of rich vanadium Semen arachidis hypogaeae | |
| CN104609968A (en) | Preparation method of alginate synergistic controlled-release organic compound fertilizer | |
| CN108484283A (en) | A kind of Chinese pricklyash fertilizer special for organic and preparation method thereof | |
| CN104418654A (en) | Total-nutrient yield increasing corn fertilizer with high efficiency |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150520 Termination date: 20200619 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |