CN106348915B - Special fertilizer for hot pickled mustard tuber and preparation method thereof - Google Patents
Special fertilizer for hot pickled mustard tuber and preparation method thereof Download PDFInfo
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- CN106348915B CN106348915B CN201610933553.1A CN201610933553A CN106348915B CN 106348915 B CN106348915 B CN 106348915B CN 201610933553 A CN201610933553 A CN 201610933553A CN 106348915 B CN106348915 B CN 106348915B
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C21/00—Methods of fertilising, sowing or planting
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B7/00—Fertilisers based essentially on alkali or ammonium orthophosphates
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/20—Mixtures of one or more fertilisers with additives not having a specially fertilising activity for preventing the fertilisers being reduced to powder; Anti-dusting additives
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/90—Mixtures of one or more fertilisers with additives not having a specially fertilising activity for affecting the nitrification of ammonium compounds or urea in the soil
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/20—Reduction of greenhouse gas [GHG] emissions in agriculture, e.g. CO2
- Y02P60/21—Dinitrogen oxide [N2O], e.g. using aquaponics, hydroponics or efficiency measures
Abstract
The invention discloses a special fertilizer for tuber mustard, which contains a basic fertilizer, a synergist and a nitrification inhibitor, wherein N, P in the basic fertilizer2O5、K2The weight ratio of O is 1.8-2.2: 0.9-1.1: 1.1 to 1.3; the content of the base fertilizer (N, P in percentage by weight) in the special fertilizer2O5、K2The sum of O) is 25 to 50 percent, the content of the synergist is 0.2 to 2.0 percent, and the content of the nitrification inhibitor is 1 to 3 percent; the synergist is polyaspartate, and the nitrification inhibitor is one or more of sodium benzoate, 3, 4-methylpyrazole phosphate, 2-chloro-6-trichloromethylpyridine, dicyandiamide, resorcinol and borax. According to the invention, polyaspartate and nitrification inhibitor are introduced into the basic fertilizer, so that the utilization rate of the preserved szechuan pickle to the nutrient elements of the fertilizer is improved, the loss of nitrogen in soil is slowed down, one-time fertilization is finally realized, the yield of the preserved szechuan pickle is increased, and the contents of nitrate and nitrite in the preserved szechuan pickle are effectively controlled.
Description
Technical Field
The invention relates to the technical field of crop fertilizers, in particular to a special fertilizer for tuber mustard and a preparation method thereof.
Background
The hot pickled mustard tuber is an important stem-processing vegetable in China, and the processed product of the hot pickled mustard tuber is called three major pickled mustard tubers in the world together with French pickled cucumbers and German sour and sweet cabbages, and is one of the main crops in Chongqing, particularly in Fuling areas. For a long time, the problems of unreasonable nutrition collocation and heavy nitrogen fertilizer exist in the fertilization of the preserved szechuan pickle, so that the contents of nitrate and nitrite in the tumor stem of the preserved szechuan pickle exceed the standard, the preserved szechuan pickle is not beneficial to the health after being eaten, and the export of preserved szechuan pickle is seriously influenced. And the common compound fertilizer has the problems of easy loss of nitrogen, low fertilizer utilization rate, continuous increase of the dosage of the formed nitrogen fertilizer, little increase of the yield, aggravation of environmental pollution and the like. Meanwhile, farmers need to fertilize for many times in the planting of the tuber mustard, the work is complicated, and the labor cost is increased.
Disclosure of Invention
The invention aims to provide a special fertilizer suitable for the growth characteristics of preserved szechuan pickle, which introduces polyaspartate and nitrification inhibitor, improves the utilization rate of the preserved szechuan pickle on nutrient elements of the fertilizer, slows down the loss of nitrogen in soil, finally achieves one-time fertilization, realizes the yield increase of the preserved szechuan pickle, and effectively controls the content of nitrate and nitrite in the preserved szechuan pickle.
The invention provides a special fertilizer for tuber mustard, which comprises a basic fertilizer, a synergist and a nitrification inhibitor, wherein N, P is contained in the basic fertilizer2O5、K2The weight ratio of O is 1.8-2.2: 0.9-1.1: 1.1 to 1.3; the content of the base fertilizer (N, P in percentage by weight) in the special fertilizer2O5、K2The sum of O) is 25 to 50 percent, the content of the synergist is 0.2 to 2.0 percent, and the content of the nitrification inhibitor is 1 to 3 percent; wherein the synergist is a polyaspartate; the nitrification inhibitor comprises sodium benzoate, 2-chloro-6-trichloromethylpyridine and one or more of optional 3, 4-methylpyrazole phosphate, dicyandiamide, resorcinol and borax.
Further, the polyaspartate is prepared by hydrolysis reaction of polysuccinimide in a weak base salt solution, wherein the weak base salt solution is carbonate or bicarbonate of potassium, sodium or ammonium, and the molar ratio of the weak base salt to the polysuccinimide is 0.50-1.60: 0.80-1.20.
Further, the molecular weight of the polysuccinimide is 2000-15000.
Furthermore, the molecular weight of the polysuccinimide is 3000-7000, and researches show that the molecular weight of the polyaspartic acid also has an influence on the synergistic effect, and the polyaspartic acid generated by hydrolysis of the polysuccinimide when the molecular weight is 3000-7000 has the most obvious synergistic effect on the tuber mustard.
Further, the nitrification inhibitor is a mixture of sodium benzoate, 2-chloro-6-trichloromethylpyridine, dicyandiamide and borax, wherein the weight ratio of sodium benzoate: 2-chloro-6-trichloromethylpyridine: dicyandiamide: the weight part ratio of borax is 1-3: 0.5-2: 1-3: 1 to 5. Because different nitrification inhibitors have different mechanisms for inhibiting the conversion of the ammonium nitrogen, the compound nitrification inhibitor can act on different stages of the conversion of the ammonium nitrogen to obtain better nitrification inhibition effect.
Further, the nitrogen source is at least one of ammonium nitrate, ammonium phosphate nitrate, calcium ammonium nitrate, urea and monoammonium phosphate.
Further, the phosphorus source is at least one of calcium superphosphate, ammonium phosphate nitrate, monoammonium phosphate, calcium phosphate and ammonium polyphosphate.
Further, the potassium source is at least one of potassium chloride and potassium sulfate.
The invention also provides a preparation method of the special fertilizer for hot pickled mustard tuber, which comprises the following steps:
(1) adding deionized water into a reaction kettle, heating to 40-90 ℃, adding weak base salt under stirring condition until the weak base salt is dissolved, adding polysuccinimide, and hydrolyzing for 20-300 min to obtain polyaspartic acid salt solution, wherein the weak base salt is carbonate or bicarbonate of potassium, sodium or ammonium; the method adopts a weak alkali salt process to prepare the polyaspartic acid salt solution, can ensure that the molecular structure and the molecular weight of the polyaspartic acid are less damaged by strong alkali, and has better synergistic effect and synergistic time limit;
(2) adding the polyaspartate solution and nitrification inhibitor obtained in the step (1) into any one of the base fertilizers, and uniformly mixing;
(3) weighing the mixture obtained in the step (2) and the rest of the basic fertilizer, and then transferring the mixture and the rest of the basic fertilizer into a granulator for granulation;
(4) screening the granulated product, crushing the large-particle product and the fine powder, entering the step (3), and re-granulating together with the raw materials;
(5) drying a product with proper granularity until the moisture content is lower than 2%, wherein the proper granularity means that the particle size is between 1.00 and 5.60mm, and more than 90% of the particle size of the product is in the range;
(6) and cooling the dried product, and adding an anti-caking agent to obtain the product, wherein the anti-caking agent is a commonly used fertilizer anti-caking agent in the prior art.
The invention also provides a preserved szechuan pickle fertilizing method which comprises the steps of applying the special fertilizer for preserved szechuan pickle 40-80kg per mu of the preserved szechuan pickle, applying the special fertilizer for preserved szechuan pickle into soil at one time in a spreading, hole spreading or furrow spreading mode during the transplanting of the preserved szechuan pickle, and spreading the soil for covering.
The invention also provides application of the special fertilizer for tuber mustard in production of tuber mustard.
The special fertilizer for the hot pickled mustard tuber is mainly applied to the field of hot pickled mustard tuber, the proportion of nitrogen, phosphorus and potassium adopted by the special fertilizer is mainly aimed at the requirement of the hot pickled mustard tuber on nutrient elements in the growth stage, and compared with the conventional fertilizer, the special fertilizer for the hot pickled mustard tuber adopts measures of reducing nitrogen and increasing phosphorus and potassium.
Based on the characteristic that nitrogen fertilizer in the fertilizer is easy to run off, the invention adds nitrification inhibitor and polyaspartic acid after reducing the nitrogen fertilizer dosage. The polyaspartic acid is a high-efficiency fertilizer synergist, a plant nutrient absorption promoter and a regulator, has a strong chelating function on nutrient components required by plants, can effectively enrich nitrogen, phosphorus, potassium and trace elements in soil for the plants to absorb and utilize, promotes the growth of root systems, strengthens the plants, realizes the joint improvement of the yield and the quality of crops, and does not contain hormone, is non-toxic and has no residue after being used. Meanwhile, researches show that polyaspartate can reduce leaching and migration of nitrogen-containing ions (especially ammonium and nitrate) in the fertilizer in soil. The nitrification inhibitor can effectively inhibit the conversion of ammonium nitrogen into nitrate nitrogen and nitrite nitrogen, and the mechanism of the commonly used nitrification inhibitor for inhibiting the conversion of the ammonium nitrogen is as follows: 3, 4-methylpyrazole phosphate inhibits the growth of chemoautotrophic bacteria (mainly ammonia oxidizing bacteria); dicyandiamide and sodium benzoate can interfere or block the utilization of ammonia oxidizing microorganisms on substrates (ammonia); the oxidation product of 2-chloro-6-trichloromethylpyridine, 6-chloropyrimidine carboxylic acid, chelates Cu on the active site of the catalytic ammoxidation key enzyme to inhibit nitration; borate can slow the rate of ammonium formation by inhibiting urease activity. Because different nitrification inhibitors have different mechanisms for inhibiting the conversion of the ammonium nitrogen, the compound nitrification inhibitor can act on different stages of the conversion of the ammonium nitrogen, so that a better nitrification inhibition effect is obtained, and the quality of the preserved szechuan pickle is improved.
The beneficial effects obtained by applying the invention to the tuber mustard are as follows:
1. compared with conventional fertilization, the method can realize one-time fertilization on the premise that the pure nitrogen applied per mu is reduced by 8-10% and other conditions are unchanged, and then additional fertilization is not needed, so that the fertilizing times can be reduced by 1-2 times compared with the conventional fertilizer, the labor force is greatly saved, and the yield of the tuber mustard is not reduced, even increased by 6-13%.
2. The compound nitrification inhibitor adopted by the invention can act on different stages of ammonium nitrogen conversion to obtain better nitrification inhibition effect, and the sodium benzoate and the 2-chloro-6-trichloromethyl pyridine have synergistic effect, and the two compounds generate nitrification inhibition effect of 1+1> 2.
3. The invention adopts the polysuccinimide with the molecular weight of 3000-7000, and the polyaspartic acid generated after hydrolysis has better synergistic effect on the growth of the tuber mustard.
Detailed Description
The following are non-limiting examples of the present invention, which are given for illustrative purposes only and are not to be construed as limiting the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
1. Fertilizer special for preparing hot pickled mustard tuber
Example one
Preparation of polyaspartate
Adding 700L of deionized water into a 1000L reaction kettle, heating to 45 ℃, adding 125kg of potassium carbonate under the stirring condition, adding 165kg of polysuccinimide with the molecular weight of 3000-7000, hydrolyzing for 300min, and filtering to obtain a polyaspartic acid potassium solution.
Example two
Preparation of special fertilizer for hot pickled mustard tuber
Weighing basic fertilizers, including 243kg of ammonium nitrate, 75kg of monoammonium phosphate, 90kg of potassium chloride, 6.35L of polyaspartic acid potassium solution, 3kg of sodium benzoate, 1kg of 2-chloro-6-trichloromethylpyridine, 2kg of dicyandiamide and 4kg of borax for later use. The method comprises the following steps of fully mixing potassium polyaspartate, sodium benzoate, 2-chloro-6-trichloromethylpyridine, dicyandiamide, borax and potassium chloride to obtain a potassium chloride mixture containing a synergist and a nitrification inhibitor, transferring the mixture, ammonium nitrate and monoammonium phosphate into a granulator for granulation, sieving a granulated product, crushing large-particle products and fine powder, granulating the crushed large-particle products and fine powder together with the raw materials again, drying the product with proper particle size until the water content is lower than 2%, cooling the dried product, and adding an anti-caking agent to obtain the special fertilizer for the tuber mustard.
2. Application effect of special fertilizer for hot pickled mustard tuber
2.1 the special fertilizer for hot pickled mustard tuber prepared in the second embodiment is used for fertilizing hot pickled mustard tuber in a field test according to the fertilizing method, the test is located in the Baitao Zhemper Jia dam in the Fuling area of Chongqing, the test variety is 'Fuza I', and the test soil is lime-brown purple mud. Soil is applied once and spread for covering during transplanting, then additional fertilization is not needed, and yield reduction and even yield increase of 6-13% can not occur after the preserved szechuan pickle is harvested.
2.2 study of the synergistic inhibitory Effect of sodium benzoate and 2-chloro-6-trichloromethylpyridine
As different nitrification inhibitors have different mechanisms for inhibiting the conversion of ammonium nitrogen, the invention researches the synergistic inhibition effect of sodium benzoate and 2-chloro-6-trichloromethylpyridine, and the result is shown in Table 1, wherein the content of nitrate and nitrite is the average value of three measurements.
Samples 1-4 were:
sample 1: basic fertilizer, polyaspartic acid potassium, dicyandiamide and borax;
sample 2: basic fertilizer, polyaspartic acid potassium, dicyandiamide, borax and sodium benzoate;
sample 3: basic fertilizer, polyaspartic acid potassium, dicyandiamide, borax and 2-chloro-6-trichloromethylpyridine;
sample 4: the base fertilizer, the polyaspartic acid potassium, the dicyandiamide, the borax, the sodium benzoate and the 2-chloro-6-trichloromethylpyridine.
The amounts of the base fertilizer, the polyaspartic acid potassium, the dicyandiamide, the borax, the sodium benzoate and the 2-chloro-6-trichloromethylpyridine in the samples 1 and 4 are the same as those in the example two, the amounts of the base fertilizer, the polyaspartic acid potassium, the dicyandiamide and the borax in the samples 2 and 3 are the same as those in the example two, and the amounts of the sodium benzoate and the 2-chloro-6-trichloromethylpyridine are respectively 2 times that in the example two.
TABLE 1 synergistic inhibitory Effect study of sodium benzoate and 2-chloro-6-trichloromethylpyridine
As can be seen from table 2, the nitrate and nitrite contents in sample 2 were reduced by 12.18% and 11.14%, respectively, and the nitrate and nitrite contents in sample 3 were reduced by 16.24% and 13.04%, respectively. When the amounts of the sodium benzoate and the 2-chloro-6-trichloromethylpyridine are both reduced by half, theoretically, the contents of the nitrate and the nitrite should be between those of the sample 2 and the sample 3, and the contents of the nitrate and the nitrite in the sample 4 are both lower than the theoretical values, which shows that the sodium benzoate and the 2-chloro-6-trichloromethylpyridine have synergistic inhibition effect, and the combination of the two can produce the inhibition effect of 1+1> 2.
2.3 Effect study of molecular weight of polysuccinimide on Hot pickled mustard tuber
The invention also researches the synergistic effect of polyaspartic acid generated by hydrolyzing polysuccinimide with different molecular weights on tuber mustard, as shown in table 2, wherein polyaspartic acid with different molecular weights is generated after hydrolyzing polysuccinimide, and polyaspartic acid with different molecular weights, a base fertilizer and a nitrification inhibitor are used for preparing the special tuber mustard fertilizer according to the method and the dosage of the second embodiment, and the results are shown in table 2, wherein the utilization rate of nitrogen, phosphorus and potassium elements is the average value of three measurements.
TABLE 2 synergistic effect of polyaspartic acid produced by hydrolysis of polysuccinimide of different molecular weight on mustard tuber
Research results show that the polysuccinimide with different molecular weights has different synergistic effects on tuber mustard, and when the molecular weight of the polysuccinimide is 3000-7000, the utilization rate of nitrogen, phosphorus and potassium elements is highest.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any simple modifications and equivalent variations of the above embodiments according to the technical spirit of the present invention are within the scope of the present invention.
Claims (9)
1. The special fertilizer for hot pickled mustard tuber is characterized by comprising a base fertilizer, a synergist and a nitrification inhibitor, wherein N, P is contained in the base fertilizer2O5、K2The weight ratio of O is 1.8-2.2: 0.9-1.1: 1.1 to 1.3; the content of the basic fertilizer in the special fertilizer is N, P percent by weight2O5、K2The sum of O is 25-50%, the content of the synergist is 0.2-2.0%, and the content of the nitrification inhibitor is 1-3%; wherein the synergist is a polyaspartate; the nitrification inhibitor is a mixture of sodium benzoate, 2-chloro-6-trichloromethyl pyridine, dicyandiamide and borax, wherein the weight ratio of sodium benzoate: 2-chloro-6-trichloromethylpyridine: dicyandiamide: the weight part ratio of borax is 1-3: 0.5-2: 1-3: 1 to 5.
2. The special fertilizer for preserved szechuan pickle as claimed in claim 1, wherein the polyaspartate is prepared by hydrolysis reaction of polysuccinimide in weak alkali salt solution, the weak alkali salt solution is carbonate or bicarbonate of potassium, sodium or ammonium, and the molar ratio of the weak alkali salt to the polysuccinimide is 0.50-1.60: 0.80-1.20.
3. The special fertilizer for hot pickled mustard tuber according to claim 2, wherein the molecular weight of the polysuccinimide is 2000-15000.
4. The special fertilizer for hot pickled mustard tuber according to claim 2, wherein the molecular weight of the polysuccinimide is 3000-7000.
5. The special fertilizer for hot pickled mustard tuber according to claim 1, wherein the nitrogen source in the base fertilizer is at least one of ammonium nitrate, ammonium phosphate nitrate, calcium ammonium nitrate, urea and monoammonium phosphate.
6. The special fertilizer for hot pickled mustard tuber according to claim 1, wherein the phosphorus source in the base fertilizer is at least one of calcium superphosphate, phosphorus ammonium nitrate, monoammonium phosphate, calcium phosphate and ammonium polyphosphate.
7. The special fertilizer for hot pickled mustard tuber according to claim 1, wherein the potassium source in the base fertilizer is at least one of potassium chloride and potassium sulfate.
8. The preparation method of the special fertilizer for preserved szechuan pickle according to any one of claims 1 to 7, which is characterized by comprising the following steps of:
(1) adding deionized water into a reaction kettle, heating to 40-90 ℃, adding weak base salt under stirring condition until the weak base salt is dissolved, adding polysuccinimide, and hydrolyzing for 20-300 min to obtain polyaspartic acid salt solution, wherein the weak base salt is carbonate or bicarbonate of potassium, sodium or ammonium;
(2) adding the polyaspartate solution and nitrification inhibitor obtained in the step (1) into any one of the base fertilizers, and uniformly mixing;
(3) weighing the mixture obtained in the step (2) and the rest of the basic fertilizer, and then transferring the mixture and the rest of the basic fertilizer into a granulator for granulation;
(4) screening the granulated product, crushing the large-particle product and the fine powder, entering the step (3), and re-granulating together with the raw materials;
(5) drying the product with proper granularity until the moisture content is lower than 2%;
(6) and cooling the dried product, and adding an anti-caking agent to obtain the product.
9. The method for fertilizing the preserved szechuan pickle, which comprises the step of applying the special fertilizer for the preserved szechuan pickle according to any one of claims 1 to 7 to the preserved szechuan pickle, wherein 40 to 80kg of the special fertilizer for the preserved szechuan pickle is applied to each mu of the preserved szechuan pickle, and the special fertilizer for the preserved szechuan pickle is applied to soil at one time in a spreading mode, a hole spreading mode or a furrow spreading mode and covered with the soil in a spreading mode when the preserved szechuan pickle is transplanted.
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| CN107870153A (en) * | 2017-11-02 | 2018-04-03 | 南京工业大学 | The detection method that a kind of phenolic compound influences on nitrobacteria electron transport system |
| CN112655499A (en) * | 2021-01-12 | 2021-04-16 | 长江师范学院 | Efficient planting method for hot pickled mustard tuber |
| CN116621657A (en) * | 2022-11-08 | 2023-08-22 | 苏州闻达食品配料有限公司 | High nitrate fertilizer special for plants |
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| CN1233598C (en) * | 2004-01-18 | 2005-12-28 | 西南农业大学 | Special nuisance-free fertilizer for preserved szechuan pickle and method for preparation thereof |
| CN101434502B (en) * | 2007-11-16 | 2012-05-30 | 中国科学院沈阳应用生态研究所 | Synergistic slow release nitrogen fertilizer and preparation thereof |
| CN102153409A (en) * | 2011-03-15 | 2011-08-17 | 长江师范学院 | Pickle prolonged-effect-time compound fertilizer and preparation method thereof |
| CN102503686B (en) * | 2011-10-29 | 2013-07-24 | 史丹利化肥股份有限公司 | Melt granulation polypeptide stability lost control compound fertilizer and preparing method thereof |
| CN103787798A (en) * | 2012-11-04 | 2014-05-14 | 李明 | Long-acting synergistic controlled release fertilizer |
| CN103183573B (en) * | 2013-03-28 | 2016-04-20 | 石家庄市中嘉化肥有限公司 | A kind of Ecological slow-release fertilizer of polymerization amino acid |
| CN104628493B (en) * | 2013-11-13 | 2017-10-17 | 中航化肥有限公司 | Nitrogen fertilizer potentiating agent and the nitrogenous fertilizer containing the nitrogen fertilizer potentiating agent |
| CN104557286A (en) * | 2014-12-24 | 2015-04-29 | 中国科学院沈阳应用生态研究所 | Efficient compound organic acid-based stable ecological fertilizer |
| CN104973982B (en) * | 2015-07-29 | 2017-12-08 | 长江师范学院 | Hot pickled mustard tube special complex fertilizer |
| CN105085089A (en) * | 2015-09-23 | 2015-11-25 | 重庆建峰化工股份有限公司 | Fertilizer synergist and preparation method thereof |
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