CN100348548C - Method for preparing poplar nutritious injection liquid by straw pulp black liquor - Google Patents
Method for preparing poplar nutritious injection liquid by straw pulp black liquor Download PDFInfo
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- CN100348548C CN100348548C CNB2006100807073A CN200610080707A CN100348548C CN 100348548 C CN100348548 C CN 100348548C CN B2006100807073 A CNB2006100807073 A CN B2006100807073A CN 200610080707 A CN200610080707 A CN 200610080707A CN 100348548 C CN100348548 C CN 100348548C
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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
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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Abstract
The present invention relates to a method for preparing poplar nutritious injection liquor from straw pulp black liquor, which belongs to the technical field of fertilizers. The method comprises: processing the straw pulp black liquor by anaerobic acidification; filtering a part of the acidified anaerobic black liquor to obtain filter liquor after ammonification and nitration; merging and concentrating the two parts of filter liquor to obtain mother liquor; enabling the mother liquor to react with hydrogen peroxide, adding nutrient components, and mixing the mother liquor with the nutrient components. When utilized to treat the straw pulp black liquor, the method of the present invention eliminates the pollution of the straw pulp black liquor and changes wastes into valuables by converting the obtained filter liquor into fertilizers; simultaneously, the prepared nutrient nutritious injection liquor is applied to the growth of poplars, overcomes the defects of slow effect taking and single nutrition of traditional fertilization, has different use effect from phytohormone chemically synthesized obviously accelerates the thickening of trunks with the same density after the nutrient nutritious injection liquor is applied to poplars, particularly triploid Chinese white poplars, and has the advantages of favorable economic benefit and environmental benefit.
Description
Technical field
The present invention relates to a kind ofly prepare the method for poplar nutritious injection, belong to technical field of fertilizers with straw pulp black liquor.
Background technology
The traditional fertilization method adopts soil application, and this fertilizing method exists many defectives, and is big as the soil application fertilizer application amount, nutritive element is often run off by soil fixing, rainwater leaching, volatilization and the element inactivation that appraises at the current rate easily takes place, and utilization rate of fertilizer is low, prevents and treats nutritional deficiency disease DeGrains such as iron deficiency; Therefore, produced the trunk injection technology.
The trunk injection technique functions comes from the agricultural chemicals that proposes in the nineteen twenty-six Japan " internal therapentics of plant " and injects theoretically, and it is primarily aimed at the costliness of chemical pesticide at that time and the techniques of pest control of the xylophyta of the low consumption agricultural chemicals that proposes.Be used for the rescuing and the production of other nutritional deficiency disease and rich trace elements fruit of iron chlorosis disease of xylophytas such as fruit tree after nineteen seventies gradually, as rich selenium fruit, high iodine fruit, these studys all at a kind of element, are the additional single-element of tree body.
Chinese patent ZL01130752.8 discloses " a kind of trunks of fruit trees composite liquid fertilizer for injection and method for making thereof ", this patent application is with urea, ferrous sulfate, saltpetre, sal epsom, zinc sulfate, manganous sulfate, boric acid, potassium primary phosphate, nitrocalcite, copper sulfate, citric acid and water are mixed, obtained a kind of trunks of fruit trees composite liquid fertilizer for injection, its objective is and reducing in the past under the prerequisite of applying fruit trees with fertilizer to soil and groundwater pollution, regulate the balance between tree endotrophic element simultaneously, strengthen the fruit tree tree vigo(u)r, make the production of fruit trees cost-saving synergistic, it is compared with soil application, the yellow level in theatre that can iron chlorosis disease is more serious is reduced to 0.20-0.22 by 2.96-2.92, yellow strain rate is reduced to 13.51-16.22 by 89.19-91.89, and the yellow index is reduced to 3.24-4.32 by 59.46-60.00; Normal relatively theatre is increasing obviously aspect single leaf area, specific leaf weight, total chlorophyll, the Net Photosynthetic Rate.
Chinese patent ZL99115891.1 discloses " nutrient injection for apple tree and method for making thereof ", this nutrient injection for apple tree is by gelatin 1-5%, sucrose 6-10%, urea 10-14%, ferrous sulfate 5-9%, zinc sulfate 7-11%, borax 1-3% and water 57-61% constitute, method for making is that the adding ferrous sulfate carried out chelatropic reaction after water was added gelatin hydrolysis, give in the solution again and add sucrose, urea, zinc sulfate, borax, it is fully dissolved, and adjust about pH value to 2.2, it collects underground fertilising, the advantage of several different methods such as leaf dressing is in one, particularly adopt tree bar injection, can effectively prevent and effect a radical cure the yellow that fruit tree causes because of nutritional deficiency, noninfectious diseases such as leaflet, strong tree body, increasing both production and income, data presentation, after Qiaoization Qin Guan tree resting stage trunk injection nutritive medium, the percentage of fertile fruit that percentage of fertile fruit is not more injected improves 36.5%; Can effectively prevent the preharvest drop phenomenon of Qin Guan, the preharvest drop rate of not injecting nutritive medium has reduced 32.2%.
Black liquid contains the various active group, has ion-exchange and huge legendary turtle is closed performance, is applicable to the raw material as the preparation slow release fertilizer.
Existing fertilizer injection technique is paid close attention to the growth of fruit tree more, then lacks concern for the economic tree of willow and so on, and the black liquor waste material is used as fertilizer, then especially beyond example, therefore, awaits further research.
Summary of the invention
The object of the present invention is to provide a kind of method for preparing poplar nutritious injection with straw pulp black liquor.
The anaerobic acidification, partial acidification anaerobism black liquor that described method comprises straw pulp black liquor respectively through add ammonia react, the nitration reaction after-filtration gets filtrate, merge two portions filtrate and concentrate mother liquor, add through hydrogen peroxide reaction back that nutrition composition is mixed to be got.
Black liquor of the present invention can be any alkaline straw-pulp black liquid
The inventive method is: black liquor temperature is reduced to 30-45 ℃, insert yeast, the access amount is the 1/30-1/20 of black liquor volume, mix, preserved at normal temperatures 5-8 days, making black liquor be acidified to pH value is 8.0-9.0, and the color of anaerobism black liquor was pale brown look and had sweet stink this moment;
Above-mentioned yeast can be yeast saccharomyces cerevisiae AS 2.23, AS 2.24, AS 2.240; The preferred yeast saccharomyces cerevisiae AS 2.23 that uses.
The lower floor's bed mud that separates the anaerobism black liquor slowly adds sulfuric acid uniformly in supernatant liquid, stirs when adding acid, and be 6-7 until the pH value of black liquor, obtain acidifying anaerobism black liquor;
Described sulfuric acid is that concentration is the vitriol oil of 92-98%.
Acidifying anaerobism black liquor is divided into two parts, a copy of it adds ammoniacal liquor and blowing air reacts, the reaction back adds sulfuric acid and regulates pH value, filters then and obtains adding ammonia react filtrate, is specially: the ammoniacal liquor that adds 10-30% concentration, ammonia volume is 4-5 a times of anaerobism black liquor solid content, temperature of reaction is controlled at 170-200 ℃, and pressure-controlling is at 2.5-3.2Mpa, and being pressed into air capacity is 5-10L/min, reaction times is 2-3 hour, adds dense H then
2SO
4Conditioned reaction product pH value is 2.5-3.5, carries out screen filtration, must add ammonia react filtrate.
Another part black liquor adds nitric acid and carries out nitration reaction, the reaction after-filtration obtains nitration reaction filtrate, is specially: under normal pressure, add the nitric acid of 50-70% to black liquor, consumption is the 2-5% of anaerobism black liquor solid content, reacted 0.5-1 hour down at 70 ℃, and then slowly add nitric acid, the nitric acid add-on is the 5-10% of anaerobism black liquor solid content, concentration of nitric acid is 50-70%, boiled 2-3 hour, and carried out screen filtration, get nitration reaction filtrate.
When adding nitric acid reaction, the NO that nitration reaction produces
2Gas application alkali lye in time absorbs, and avoids the pollution of environment and to the corrosion of equipment.
To add ammonia react filtrate and nitration reaction filtrate is even according to the mixed of 3.0-3.5: 1.5-2.0, being concentrated into solid content is 80-85%, slowly adds hydrogen peroxide to reaction solution then and is faint yellow, obtains mother liquor.
Above-mentioned blending ratio is preferably 3.2: 1.7.
Above-mentioned hydrogen peroxide concentration is preferably 7-15%.
With above-mentioned mother liquor is solvent, adds α-Nai Yisuanna, MgSO
4, ZnSO
4, MnSO
4, KH
2PO
4And urea, mixing and dissolve, it is 3-4 that potential of hydrogen is adjusted to pH, obtains finished product, above-mentioned each weight percentages of components should be controlled at following scope:
α-Nai Yisuanna 0.2%
MgSO
4 12-15％
ZnSO
4 5-9％
MnSO
4 2-6％
KH
2PO
4 10-12％
Urea 5-7%.
In the resulting finished product, above-mentioned each weight percentages of components preferably is controlled at following ratio:
α-Nai Yisuanna 0.2%
MgSO
4 14％
ZnSO
4 7％
MnSO
4 4％
KH
2PO
4 11％
Urea 6%.
Utilize the inventive method straw pulping black liquor, the filtrate that obtains is converted into fertilizer uses, when having eliminated the straw pulp black liquor pollution, turn waste into wealth; The nutrient injection that makes simultaneously is applied to the growth of willow, solved that traditional fertilization takes effect slowly, the single shortcoming of nutrition, result of use is different from the plant hormone of chemosynthesis, especially at Triploid of Populus Tomentosa, trunk increases thick obviously quickening under the same density after the use, has good economic benefits and environmental benefit.
Description of drawings
Fig. 1 is the inventive method schema.
Embodiment
Embodiment 1
Black liquor temperature is reduced to 30 ℃, insert yeast saccharomyces cerevisiae AS 2.23, the access amount is 1/30 of a black liquor volume, mixes, and preserves at normal temperatures 5 days, and making black liquor be acidified to pH value is 9.0, and the color of anaerobism black liquor was pale brown look and had sweet stink this moment;
The lower floor's bed mud that separates the anaerobism black liquor slowly adds 92% sulfuric acid uniformly in supernatant liquid, stirs when adding acid, and be 6 until the pH value of black liquor, obtain acidifying anaerobism black liquor;
Acidifying anaerobism black liquor is divided into two parts, enter enamel reaction still respectively, a copy of it adds the ammoniacal liquor of 25% concentration, ammonia volume is 5 times of anaerobism black liquor solid content, temperature of reaction is controlled at 170 ℃, and pressure-controlling is at 2.5Mpa, and being pressed into air capacity is 10L/min, reaction times is 3 hours, adds dense H then
2SO
4Conditioned reaction product pH value is 3, carries out screen filtration, must add ammonia react filtrate.
Another part black liquor is under normal pressure, nitric acid to black liquor adding 63%, consumption is 2% of an anaerobism black liquor solid content, reacted 0.5 hour down at 70 ℃, and then slowly add nitric acid, the nitric acid add-on is 8% of an anaerobism black liquor solid content, concentration of nitric acid is 63%, boiled 3 hours, and carried out screen filtration, get nitration reaction filtrate.
When adding nitric acid reaction, the NO that nitration reaction produces
2Gas application alkali lye in time absorbs, and avoids the pollution of environment and to the corrosion of equipment.
To add ammonia react filtrate and nitration reaction filtrate is even according to 3.2: 1.7 mixed, being concentrated into solid content is 85%, and hydrogen peroxide to the reaction solution that slowly adds 7% concentration then is faint yellow, obtains mother liquor.
With above-mentioned mother liquor is solvent, adds α-Nai Yisuanna, MgSO
4, ZnSO
4, MnSO
4, KH
2PO
4And urea, mixing and dissolve, it is 3 that potential of hydrogen is adjusted to pH, obtains finished product, above-mentioned each weight percentages of components is:
α-Nai Yisuanna 0.2%
MgSO
4 14％
ZnSO
4 7％
MnSO
4 4％
KH
2PO
4 11％
Urea 6%.
Embodiment 2
Black liquor temperature is reduced to 35 ℃, insert yeast saccharomyces cerevisiae AS 2.24, the access amount is 1/25 of a black liquor volume, mixes, and preserves at normal temperatures 8 days, and making black liquor be acidified to pH value is 8.5, and the color of anaerobism black liquor was pale brown look and had sweet stink this moment;
The lower floor's bed mud that separates the anaerobism black liquor slowly adds 95% sulfuric acid uniformly in supernatant liquid, stirs when adding acid, and be 7 until the pH value of black liquor, obtain acidifying anaerobism black liquor;
Acidifying anaerobism black liquor is divided into two parts, enter enamel reaction still respectively, a copy of it adds the ammoniacal liquor of 10% concentration, ammonia volume is 5 times of anaerobism black liquor solid content, temperature of reaction is controlled at 200 ℃, and pressure-controlling is at 3.0Mpa, and being pressed into air capacity is 8L/min, reaction times is 2.5 hours, adds dense H then
2SO
4Conditioned reaction product pH value is 3.5, carries out screen filtration, must add ammonia react filtrate.
Another part black liquor is under normal pressure, nitric acid to black liquor adding 50%, consumption is 5% of an anaerobism black liquor solid content, reacted 1 hour down at 70 ℃, and then slowly add nitric acid, the nitric acid add-on is 5% of an anaerobism black liquor solid content, concentration of nitric acid is 50%, boiled 2 hours, and carried out screen filtration, get nitration reaction filtrate.
When adding nitric acid reaction, the NO that nitration reaction produces
2Gas application alkali lye in time absorbs, and avoids the pollution of environment and to the corrosion of equipment.
To add ammonia react filtrate and nitration reaction filtrate is even according to 3: 2 mixed, being concentrated into solid content is 82%, and hydrogen peroxide to the reaction solution that slowly adds 15% concentration then is faint yellow, obtains mother liquor.
With above-mentioned mother liquor is solvent, adds α-Nai Yisuanna, MgSO
4, ZnSO
4, MnSO
4, KH
2PO
4And urea, mixing and dissolve, it is 3 that potential of hydrogen is adjusted to pH, obtains finished product, above-mentioned each weight percentages of components is:
α-Nai Yisuanna 0.2%
MgSO
4 12％
ZnSO
4 9％
MnSO
4 2％
KH
2PO
4 12％
Urea 5%.
Embodiment 3
Black liquor temperature is reduced to 45 ℃, insert yeast saccharomyces cerevisiae AS 2.240, the access amount is 1/20 of a black liquor volume, mixes, and preserves at normal temperatures 6 days, and making black liquor be acidified to pH value is 8, and the color of anaerobism black liquor was pale brown look and had sweet stink this moment;
The lower floor's bed mud that separates the anaerobism black liquor slowly adds 98% sulfuric acid uniformly in supernatant liquid, stirs when adding acid, and be 6.5 until the pH value of black liquor, obtain acidifying anaerobism black liquor;
Acidifying anaerobism black liquor is divided into two parts, enter enamel reaction still respectively, a copy of it adds the ammoniacal liquor of 30% concentration, ammonia volume is 4 times of anaerobism black liquor solid content, temperature of reaction is controlled at 190 ℃, and pressure-controlling is at 3.2Mpa, and being pressed into air capacity is 5L/min, reaction times is 2 hours, adds dense H then
2SO
4Conditioned reaction product pH value is 2.5, carries out screen filtration, must add ammonia react filtrate.
Another part black liquor is under normal pressure, nitric acid to black liquor adding 70%, consumption is 3% of an anaerobism black liquor solid content, reacted 1 hour down at 70 ℃, and then slowly add nitric acid, the nitric acid add-on is 10% of an anaerobism black liquor solid content, concentration of nitric acid is 70%, boiled 2.5 hours, and carried out screen filtration, get nitration reaction filtrate.
When adding nitric acid reaction, the NO that nitration reaction produces
2Gas application alkali lye in time absorbs, and avoids the pollution of environment and to the corrosion of equipment.
To add ammonia react filtrate and nitration reaction filtrate is even according to 3.5: 1.5 mixed, being concentrated into solid content is 80%, and hydrogen peroxide to the reaction solution that slowly adds 10% concentration then is faint yellow, obtains mother liquor.
With above-mentioned mother liquor is solvent, adds α-Nai Yisuanna, MgSO
4, ZnSO
4, MnSO
4, KH
2PO
4And urea, mixing and dissolve, it is 3.5 that potential of hydrogen is adjusted to pH, obtains finished product, above-mentioned each weight percentages of components is:
α-Nai Yisuanna 0.2%
MgSO
4 15％
ZnSO
4 5％
MnSO
4 6％
KH
2PO
4 10％
Urea 7%.
Experimental example
The poplar nutritious injection of embodiment 1-3 preparation is applied to Triploid of Populus Tomentosa, the contrast experiment grows, carrying out observation test aspect height increment and the breast diameter growth amount, relatively under the identical situation of other conditions, nutrient injection of the present invention and traditional fertilization are to the influence of Triploid of Populus Tomentosa volume of timber gain, with the excellent effect of explanation nutrient injection of the present invention.Material: Triploid of Populus Tomentosa is twisted with the fingers grafting at the forest farm seedling nursery with a whip work in-process seedling and big gun, and spring in 2000 compared test with 1 year living seedling, the long-pending 7.1hm for examination
2, density 5m*5m, i.e. 400 strains/hm
2, grow and measured in 8 years.
Method: injection orifice is selected in tree overhead about 10cm place, bar bottom, and along the drill bit horizontal drilling of the diametric(al) of setting bar with 5mm, hole depth is about the 1/2-2/3 that sets shank diameter.Available two or three syringe needles are injected simultaneously, but the distance between injection orifice and the injection orifice is about 15cm, and boring direction is the angle of 90 ° or 120 °.
Interpretation of result sees the following form:
| 1 | 2 | 3 | 4 | 5 | Mean value | ||
| Height of tree m | The traditional fertilization group | 11.6 | 11.7 | 11.9 | 11.9 | 9.6 | 11.34 |
| Of the present invention group | 15.3 | 14.3 | 14.4 | 13.7 | 14.2 | 14.38 | |
| Diameter of a cross-section of a tree trunk 1.3 meters above the ground cm | The traditional fertilization group | 16.0 | 16.4 | 16.3 | 16.5 | 17.2 | 16.48 |
| Of the present invention group | 18.5 | 19.6 | 18.9 | 18.3 | 19.0 | 18.86 |
Take the completely random block design, 10 strain/groups are got 5 groups at random, average for every group, and be contrast with traditional fertilization group Triploid of Populus Tomentosa, volume of timber gain is respectively organized in statistical study.
This shows, of the present invention group than the traditional fertilization group on height of tree index, improve 26.8%, on diameter of a cross-section of a tree trunk 1.3 meters above the ground index, improve 14.4%, overall volume of timber average gain surpasses the traditional fertilization group, growth differences is obvious, effect is remarkable.
Claims (8)
1, a kind of method for preparing poplar nutritious injection with straw pulp black liquor, it is characterized in that, the anaerobic acidification, two portions acidifying anaerobism black liquor that described method comprises straw pulp black liquor respectively through add ammonia react, the nitration reaction after-filtration gets filtrate, merge two portions filtrate and concentrated, obtain mother liquor after the hydrogen peroxide reaction, the interpolation nutrition composition is mixed to be got;
The anaerobic acidification of described straw pulp black liquor is: the straw pulp black liquor temperature is reduced to 30-45 ℃, insert yeast, the access amount is the 1/30-1/20 of black liquor volume, mix, preserved at normal temperatures 5-8 days, making black liquor be acidified to pH value is 8.0-9.0, and the color of anaerobism black liquor was pale brown look and had sweet stink this moment; The lower floor's bed mud that separates the anaerobism black liquor slowly adds sulfuric acid uniformly in supernatant liquid, stirs when adding acid, and be 6-7 until the pH value of black liquor, obtain acidifying anaerobism black liquor;
The described ammonia react that adds is: acidifying anaerobism black liquor is divided into two parts, a copy of it adds ammoniacal liquor and blowing air reacts, the reaction back adds sulfuric acid and regulates pH value, filters then and obtains adding ammonia react filtrate, is specially: the ammoniacal liquor that adds 10-30% concentration, ammonia volume is 4-5 a times of anaerobism black liquor solid content, temperature of reaction is controlled at 170-200 ℃, and pressure-controlling is at 2.5-3.2Mpa, and being pressed into air capacity is 5-10L/min, reaction times is 2-3 hour, adds dense H then
2SO
4Conditioned reaction product pH value is 2.5-3.5, carries out screen filtration, must add ammonia react filtrate;
Described nitration reaction is: another part black liquor adds nitric acid and carries out nitration reaction, the reaction after-filtration obtains nitration reaction filtrate, is specially: under normal pressure, add the nitric acid of 50-70% to black liquor, consumption is the 2-5% of anaerobism black liquor solid content, reacted 0.5-1 hour down at 70 ℃, and then slowly add nitric acid, the nitric acid add-on is the 5-10% of anaerobism black liquor solid content, concentration of nitric acid is 50-70%, boiled 2-3 hour, and carried out screen filtration, get nitration reaction filtrate;
The reaction of described hydrogen peroxide is: will add ammonia react filtrate and nitration reaction filtrate is even according to the mixed of 3.0-3.5: 1.5-2.0, being concentrated into solid content is 80-85%, slowly adds hydrogen peroxide to reaction solution then and is faint yellow, obtains mother liquor;
Described interpolation nutrition composition process is: with above-mentioned mother liquor is solvent, adds α-Nai Yisuanna, MgSO4, ZnSO4, MnSO4, KH2PO4 and urea, mixes and dissolves, and it is 3-4 that potential of hydrogen is adjusted to pH,
Obtain finished product;
Described nutrition composition is α-Nai Yisuanna, MgSO
4, ZnSO
4, MnSO
4, KH
2PO
4And urea,
α-Nai Yisuanna, MgSO in the described nutrient injection
4, ZnSO
4, MnSO
4, KH
2PO
4Be respectively with the weight percent of urea:
α-Nai Yisuanna 0.2%
MgSO
4 12-15％
ZnSO
4 5-9％
MnSO
4 2-6％
KH
2PO
4 10-12％
Urea 5-7%.
2, method according to claim 1 is characterized in that, described yeast is yeast saccharomyces cerevisiae AS 2.23, AS 2.24, AS 2.240.
3, method according to claim 2 is characterized in that, described yeast is yeast saccharomyces cerevisiae AS 2.23.
4, method according to claim 1 is characterized in that, described sulfuric acid is that concentration is the vitriol oil of 92-98%.
5, method according to claim 1 is characterized in that, in the described nitration reaction, and when adding nitric acid reaction, the NO that nitration reaction produces
2Gas application alkali lye in time absorbs.
6, method according to claim 1 is characterized in that, describedly adds ammonia react filtrate and nitration reaction filtrate is even according to 3.2: 1.7 mixed.
7, method according to claim 1 is characterized in that, described hydrogen peroxide concentration is 7-15%.
8, method according to claim 1 is characterized in that, α-Nai Yisuanna, MgSO in the described nutrient injection
4, ZnSO
4, MnSO
4, KH
2PO
4Be respectively with the weight percent of urea:
α-Nai Yisuanna 0.2%
MgSO
4 14％
ZnSO
4 7％
MnSO
4 4％
KH
2PO
4 11％
Urea 6%.
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|---|---|---|---|
| CNB2006100807073A CN100348548C (en) | 2006-05-12 | 2006-05-12 | Method for preparing poplar nutritious injection liquid by straw pulp black liquor |
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| CN100348548C true CN100348548C (en) | 2007-11-14 |
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| CN101486607B (en) * | 2008-01-16 | 2011-07-20 | 山东泉林纸业有限责任公司 | Yellow humic acid water flush fertilizer with straw pulping black liquor as raw material by ammonium sulfite process and preparation thereof |
| CN102757262B (en) * | 2012-06-12 | 2013-12-11 | 福建省诏安县绿洲生化有限公司 | Method for producing liquid water-soluble carbon fertilizer with high-concentration organic waste water |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1075312A (en) * | 1992-02-14 | 1993-08-18 | 于国源 | The production method of humic acid liquid compound fertilizer |
| CN1280968A (en) * | 1999-07-16 | 2001-01-24 | 江西贵溪化肥厂 | Process for preparing organic composite N-P-K fertilizer from solidified substance in black paper-making liquid |
| CN1420108A (en) * | 2002-12-20 | 2003-05-28 | 呼世斌 | Long-acting compound nutrient injection for fruit tree and applying method |
-
2006
- 2006-05-12 CN CNB2006100807073A patent/CN100348548C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1075312A (en) * | 1992-02-14 | 1993-08-18 | 于国源 | The production method of humic acid liquid compound fertilizer |
| CN1280968A (en) * | 1999-07-16 | 2001-01-24 | 江西贵溪化肥厂 | Process for preparing organic composite N-P-K fertilizer from solidified substance in black paper-making liquid |
| CN1420108A (en) * | 2002-12-20 | 2003-05-28 | 呼世斌 | Long-acting compound nutrient injection for fruit tree and applying method |
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