CN103787759A - Preparation method for water retention type humic acid compound fertilizer - Google Patents
Preparation method for water retention type humic acid compound fertilizer Download PDFInfo
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- CN103787759A CN103787759A CN201410029168.5A CN201410029168A CN103787759A CN 103787759 A CN103787759 A CN 103787759A CN 201410029168 A CN201410029168 A CN 201410029168A CN 103787759 A CN103787759 A CN 103787759A
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Abstract
The invention provides a preparation method for a water retention type humic acid compound fertilizer. The preparation method comprises the following steps: firstly, mixing acrylic acid, a cross-linking agent, an accelerant, a neutralizing agent, water, humic acid, urea, diammonium phosphate and potassium chloride at a certain weight ratio; continuously agitating and reacting; then, drying a reactant at a certain temperature; crushing and sieving to prepare the water retention type humic acid compound fertilizer. According to the method, a macromolecular network cross-linking structure formed by cross-linking and polymerizing the humic acid and the acrylic acid is utilized; after the water retention type humic acid compound fertilizer is applied to soil, a lot of water molecules can be absorbed and are preserved in a colloid manner, so that the irrigation water capacity and the irrigation times are reduced; the requirements of stably supplying the water to a plant root system are met; the production process is simple, needed equipment is less and the preparation cost is low; the water retention type humic acid compound fertilizer is convenient to popularize and promote and is especially applicable to arid regions.
Description
Technical field
The present invention relates to the preparation method of a kind of preparation method's of humic acid complex fertilizer, particularly a kind of water-maintaining humic acid complex fertilizer.
Background technology
At present, approximately 15.11 hundred million mu of China's Arid lands areas, account for 76% of total area under cultivation, wherein approximately 11.71 hundred million of non-irrigated condition mu.Super absorbent resin is a kind of new functional macromolecule material.It can absorb and keep the even pure water of thousands of times or the physiological saline of decades of times of hundreds of times of sole masses, has good drought-resistant water-preserving effect and effect, can be used as water-holding agent and use in agricultural.But because its price is too expensive, be difficult to apply as water-holding agent in agricultural.
Humic acids is a kind of organic macromolecule compound that occurring in nature extensively exists, and is the main component of agron, accounts for the more than 85% of soil ulmin.Humic acids is also extensively present in brown coal, weathered coal and peat soil, and content reaches 30～70%.In humic acids molecular structure, contain the several functions groups such as phenolic hydroxyl group, alcoholic extract hydroxyl group, enol base, sulfonic group, amino, quinonyl and carbonyl.It is functional that humic acids acidity, wetting ability, ion exchangeable and complexing etc. have been given in the existence of these active groups.Humic acids has special biological activity and structure properties, can stimulating plant grows, increases the resistance of crop, strengthens the crumb structure of soil, improves the absorption of soil to nutritive substances such as nitrogen, phosphorus, potassium, and has certain fertilizer conservation, water retention capacity.At present, humic acid substance oneself be widely used in the industries such as agricultural, oil, building materials, environmental protection, agricultural chemicals, health care, fertilizer.
In recent years, utilize vinylformic acid hydrophilic monomer and humic acids main chain active centre that graft copolymerization occurs, the work of preparing super absorbent resin water-holding agent has obtained certain progress.(the A. Li such as Li, J. Zhang, A. Wang, Polym. Advan. Technol., 16 (2005) 675) synthesized polyacrylic acid/humic acids super absorbent resin, found that, the introducing of humic acids can significantly improve the water absorbent rate of polyacrylic acid high water absorptive resin in distilled water and physiological saline, even if introduce 40% humic acids, the water absorbent rate of gained super absorbent resin is still far above polyacrylic acid high water absorptive resin.(the Shi Jun such as Shi Jun, Wang Tao, Xi'an Petroleum University's journal (natural science edition), (2008) 53) take vinylformic acid and humic acids as raw material, N, N '-methylene-bisacrylamide is that linking agent, ammonium persulphate are initiator, has synthesized polyacrylic acid/humic acids super absorbent resin of multi-hole type.Research shows, compared with the polyacrylic acid high water absorptive resin of synthesized under same condition, the introducing of humic acids has improved the rate of water absorption of super absorbent resin, has also improved salt tolerant and the temperature resistant capability of resin simultaneously.(the first jasmines such as first jasmine, Zhu Shuquan, Li Huamin, Huang Zhanbin, Zou Lizhuan, Journal of Chemical Industry and Engineering, (2005) 2004) adopt solution polymerization process to synthesize Sodium Polyacrylate Super Hydroscopicity Resin, by compound to humic acids and sodium polyacrylate, make a kind of surface-crosslinked type super absorbent resin by surface-crosslinked reaction.Research finds, adding of humic acids obviously improved receptivity and the salt resistant character of super absorbent resin to water, and can promote the growth of plant.
In addition, in recent decades, use in a large number the chemical fertilizer of nutritive elements such as containing nitrogen, phosphorus, potassium in China's agriculture production, compare traditional farm manure, its onset is rapid, can make crop yield be doubled and redoubled.But due to the life-time service of chemical fertilizer, China's arable soil hardens seriously at present, and agricultural product quality also has decline.
In sum, traditional superabsorbent acrylics is expensive, without the required nutritive element of plant-growth, and cannot widespread use in agricultural; Humic acids is cheap and easy to get, and aboundresources also needs to develop new derived product; Common chemical fertilizer is easily leaching loss and volatilization in application, and utilization ratio is low.Thereby, prepare a kind of cheap multifunctional compound fertilizer with preserve moisture and fertility, stimulating plant growth and nutrition slow-release function and be extremely necessary.
Summary of the invention
For the general arid of ploughing, the problem that soil compaction is serious, utilization rate of fertilizer is low, the invention provides a kind of preparation method who has water-absorbing-retaining, improvement soil quality, stimulation crop growth, the water-maintaining humic acid complex fertilizer of the several functions such as nutrition is provided for farm crop.
For the problems referred to above, the preparation method of a kind of water-maintaining humic acid complex fertilizer provided by the invention, described in it, the preparation method of humic acid complex fertilizer follows these steps to carry out:
(1) by vinylformic acid, linking agent, promotor, neutralizing agent, water, be crushed to 60～80 object humic acidss, urea, diammonium phosphate, Repone K and mix with the mass parts of 30～60:0.02～0.1:0.01～0.03:5～20:50～200:10～40:5～45:10～20:5～20,60～80 ℃ of continuously stirring reactions 3～5 hours;
(2) above-mentioned reactant is dried at 20～90 ℃, crushing and screening to 20～60 order, makes water-maintaining humic acid complex fertilizer.
In technique scheme, further.
Described linking agent is N, a kind of or its mixture of N '-methylene-bisacrylamide, glycerol.
Described promotor is a kind of or its mixture of Potassium Persulphate, ammonium persulphate.
Described neutralizing agent is a kind of or its mixture of sodium hydroxide, potassium hydroxide.
The present invention is directed to the general arid of ploughing, the problem that soil compaction is serious, utilization rate of fertilizer is low, provides a kind of preparation method who has water-absorbing-retaining, improvement soil quality, stimulation crop growth, the water-maintaining humic acid complex fertilizer of the several functions such as nutrition is provided for farm crop.Compared with prior art, its that directly bring and advantage that certainly lead to and positively effect are that present method production technique is simple, and required equipment is less, and preparation cost is cheap, is convenient to penetration and promotion, and three-waste free discharge in process of production, has realized cleaner production.
In the water-maintaining humic acid complex fertilizer that present method is produced, contain the macromolecule network crosslinking structure of humic acids, the formation of vinylformic acid crosslinking polymerization, be administered to after soil, can absorb in a large number moisture and be preserved with the form of colloid, reduce irrigation water use and number of times, the demand of stable supply root system of plant to moisture, is especially applicable to arid area and uses.
The nutritive elements such as nitrogen in the water-maintaining humic acid complex fertilizer that present method is produced, phosphorus, potassium can be kept in the macromolecule network structure that humic acids, vinylformic acid crosslinking polymerization form for a long time, obtain slow release effect, have reduced nutrient element loss rate in fertilizer.
The humic acids itself comprising in the water-maintaining humic acid complex fertilizer that present method is produced is also fertilizer, it also can be released in soil slowly, play stimulating plant and grow, improve crop quality and anti-adversity, strengthen the crumb structure of soil, improve the absorption of soil to nutritive substance.
Embodiment
Below the specific embodiment of the present invention is made an explanation.
The preparation method who implements a kind of water-maintaining humic acid complex fertilizer that the present invention is above-mentioned provided, described in it, preparation method follows these steps to carry out:
First, by vinylformic acid, linking agent, promotor, neutralizing agent, water, be crushed to 60～80 object humic acidss, urea, diammonium phosphate, Repone K and mix with the mass parts of 30～60:0.02～0.1:0.01～0.03:5～20:50～200:10～40:5～45:10～20:5～20,60～80 ℃ of continuously stirring reactions 3～5 hours;
Secondly, above-mentioned reactant is dried at 20～90 ℃, crushing and screening to 20～60 order, makes water-maintaining humic acid complex fertilizer.
In technique scheme, further, linking agent is to adopt N, and a kind of or its mixture of N '-methylene-bisacrylamide, glycerol all can.Promotor is to adopt a kind of or its mixture of Potassium Persulphate, ammonium persulphate all can.Neutralizing agent is to adopt a kind of or its mixture of sodium hydroxide, potassium hydroxide all can.
Below the specific embodiment of the present invention is further illustrated.
Embodiment 1
Humic acids, urea, diammonium phosphate, Repone K are pulverized respectively and are crossed 60 mesh sieves, then press vinylformic acid: N, the mass parts of N '-methylene-bisacrylamide: Potassium Persulphate: sodium hydroxide: water: humic acids: urea: diammonium phosphate: Repone K=60:0.05:0.01:14:150:20:15:12:9 adds reactor to mix, at 70 ℃, carry out continuously stirring reaction, 5 hours reaction times.Reactant is dry at 90 ℃, and crushing and screening to 20 order, can be made into water-maintaining humic acid complex fertilizer.
Embodiment 2
Humic acids, urea, diammonium phosphate, Repone K are pulverized respectively and are crossed 60 mesh sieves, then press vinylformic acid: N, the mass parts of N '-methylene-bisacrylamide: ammonium persulfate: potassium hydroxide: water: humic acids: urea: diammonium phosphate: Repone K=60:0.05:0.02:16:150:30:20:15:6 adds reactor to mix, at 75 ℃, carry out continuously stirring reaction, 3 hours reaction times.Reactant is dry at 70 ℃, and crushing and screening to 60 order, can be made into water-maintaining humic acid complex fertilizer.
Embodiment 3
Humic acids, urea, diammonium phosphate, Repone K are pulverized respectively and are crossed 80 mesh sieves, then by vinylformic acid: the mass parts of glycerol: ammonium persulfate: sodium hydroxide: water: humic acids: urea: diammonium phosphate: Repone K=30:0.02:0.01:5:100:30:30:10:20 adds reactor to mix, at 65 ℃, carry out continuously stirring reaction, 4.5 hours reaction times.Reactant is dry at 20 ℃, and crushing and screening to 30 order, can be made into water-maintaining humic acid complex fertilizer.
Embodiment 4
Humic acids, urea, diammonium phosphate, Repone K are pulverized respectively and are crossed 60 mesh sieves, then press vinylformic acid: N, the mass parts of N '-methylene-bisacrylamide: ammonium persulfate: sodium hydroxide: water: humic acids: urea: diammonium phosphate: Repone K=50:0.05:0.02:5:200:40:17:10:5 adds reactor to mix, at 60 ℃, carry out continuously stirring reaction, 5 hours reaction times.Reactant is dry at 50 ℃, and crushing and screening to 30 order, can be made into water-maintaining humic acid complex fertilizer.
Embodiment 5
Humic acids, urea, diammonium phosphate, Repone K are pulverized respectively and are crossed 80 mesh sieves, then press vinylformic acid: N, the mass parts of N '-methylene-bisacrylamide: Potassium Persulphate: potassium hydroxide: water: humic acids: urea: diammonium phosphate: Repone K=60:0.05:0.03:20:200:40:17:10:5 adds reactor to mix, at 60 ℃, carry out continuously stirring reaction, 5 hours reaction times.Reactant is dry at 90 ℃, and crushing and screening to 30 order, can be made into water-maintaining humic acid complex fertilizer.
Claims (4)
1. a preparation method for water-maintaining humic acid complex fertilizer, described in it, preparation method follows these steps to carry out:
(1) by vinylformic acid, linking agent, promotor, neutralizing agent, water, be crushed to 60～80 object humic acidss, urea, diammonium phosphate, Repone K and mix with the mass parts of 30～60:0.02～0.1:0.01～0.03:5～20:50～200:10～40:5～45:10～20:5～20,60～80 ℃ of continuously stirring reactions 3～5 hours;
(2) above-mentioned reactant is dried at 20～90 ℃, crushing and screening to 20～60 order, makes water-maintaining humic acid complex fertilizer.
2. the preparation method of a kind of water-maintaining humic acid complex fertilizer as claimed in claim 1, is characterized in that described linking agent is N, a kind of or its mixture of N '-methylene-bisacrylamide, glycerol.
3. the preparation method of a kind of water-maintaining humic acid complex fertilizer as claimed in claim 1, is characterized in that described promotor is a kind of or its mixture of Potassium Persulphate, ammonium persulphate.
4. the preparation method of a kind of water-maintaining humic acid complex fertilizer as claimed in claim 1, is characterized in that described neutralizing agent is a kind of or its mixture of sodium hydroxide, potassium hydroxide.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104030838A (en) * | 2014-06-30 | 2014-09-10 | 成都新柯力化工科技有限公司 | Polymerized sustained-release compound fertilizer and preparation method thereof |
| CN109369291A (en) * | 2018-11-09 | 2019-02-22 | 中国农业科学院农业资源与农业区划研究所 | It is a kind of for winter wheat or the phosphorus ammonium preparation method containing Humic acid synergistic carrier of spring maize base manure |
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| CN1781982A (en) * | 2004-12-02 | 2006-06-07 | 中国科学院兰州化学物理研究所 | Organic-inorganic composite water retaining agent with fertilizer slow release function and its preparing method |
| CN101003600A (en) * | 2006-12-29 | 2007-07-25 | 中国科学院长春应用化学研究所 | Method for preparing high water absorbing resin in nutrition type for agricultural use |
| CN101215207A (en) * | 2008-01-18 | 2008-07-09 | 师进 | Biochemistry fulvic acid water-loss reducer and preparation method thereof |
| CN101434675A (en) * | 2008-12-15 | 2009-05-20 | 中国科学院长春应用化学研究所 | Polyacrylic acid/acrylic amide type water retention agent containing nitrogen, phosphor, potassium and montmorillonite and preparation thereof |
| US20090312183A1 (en) * | 2006-08-31 | 2009-12-17 | Hirotama Fujimaru | Particulate water absorbing agent and production method thereof |
| CN102002369A (en) * | 2010-10-08 | 2011-04-06 | 中国科学院新疆生态与地理研究所 | Method for preparing ecological agricultural water-retaining agent |
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2014
- 2014-01-22 CN CN201410029168.5A patent/CN103787759A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1781982A (en) * | 2004-12-02 | 2006-06-07 | 中国科学院兰州化学物理研究所 | Organic-inorganic composite water retaining agent with fertilizer slow release function and its preparing method |
| US20090312183A1 (en) * | 2006-08-31 | 2009-12-17 | Hirotama Fujimaru | Particulate water absorbing agent and production method thereof |
| CN101003600A (en) * | 2006-12-29 | 2007-07-25 | 中国科学院长春应用化学研究所 | Method for preparing high water absorbing resin in nutrition type for agricultural use |
| CN101215207A (en) * | 2008-01-18 | 2008-07-09 | 师进 | Biochemistry fulvic acid water-loss reducer and preparation method thereof |
| CN101434675A (en) * | 2008-12-15 | 2009-05-20 | 中国科学院长春应用化学研究所 | Polyacrylic acid/acrylic amide type water retention agent containing nitrogen, phosphor, potassium and montmorillonite and preparation thereof |
| CN102002369A (en) * | 2010-10-08 | 2011-04-06 | 中国科学院新疆生态与地理研究所 | Method for preparing ecological agricultural water-retaining agent |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104030838A (en) * | 2014-06-30 | 2014-09-10 | 成都新柯力化工科技有限公司 | Polymerized sustained-release compound fertilizer and preparation method thereof |
| CN109369291A (en) * | 2018-11-09 | 2019-02-22 | 中国农业科学院农业资源与农业区划研究所 | It is a kind of for winter wheat or the phosphorus ammonium preparation method containing Humic acid synergistic carrier of spring maize base manure |
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Application publication date: 20140514 |