CN113773137A - Universal low-temperature-resistant liquid fertilizer and preparation method thereof - Google Patents
Universal low-temperature-resistant liquid fertilizer and preparation method thereof Download PDFInfo
- Publication number
- CN113773137A CN113773137A CN202111045466.XA CN202111045466A CN113773137A CN 113773137 A CN113773137 A CN 113773137A CN 202111045466 A CN202111045466 A CN 202111045466A CN 113773137 A CN113773137 A CN 113773137A
- Authority
- CN
- China
- Prior art keywords
- parts
- temperature
- low
- liquid fertilizer
- stirring
- 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.)
- Granted
Links
Images
Classifications
-
- 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
-
- 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
- C05G5/00—Fertilisers characterised by their form
- C05G5/20—Liquid fertilisers
-
- 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 universal low-temperature-resistant liquid fertilizer which comprises the following raw materials in parts by weight: 500-600 parts of potassium fulvate mother liquor, 30-50 parts of polyvinyl alcohol, 1-2 parts of silane coupling agent, 100-150 parts of water, 50-100 parts of gamma-polyglutamic acid liquid, 20-30 parts of propylene glycol, 100-150 parts of urea, 50-80 parts of monopotassium phosphate, 3-5 parts of boric acid, 1-2 parts of ammonium heptamolybdate, 50-80 parts of monoammonium phosphate, 30-50 parts of salicylic acid and 3-5 parts of brassin. According to the invention, through the crosslinking reaction of polyvinyl alcohol, a silane coupling agent and the neutral potassium fulvate mother liquor, the solution adhesion and extension capability can be well improved, the retention time of the fertilizer on the leaves is greatly improved in the use scene of foliage spraying, the washing of the fertilizer liquid caused by low-temperature or frost leaf condensate water is avoided, the plant heat preservation capability is improved, and the negative effect of low-temperature cold damage is reduced.
Description
Technical Field
The invention relates to the technical field of liquid fertilizers, in particular to a universal low-temperature-resistant liquid fertilizer and a preparation method thereof.
Background
The low-temperature cold damage is one of important disasters influencing the sustainable and stable development of agricultural production, has the characteristics of large scale, comprehensiveness, regional difference and the like, is likely to occur in all seasons, is mostly concentrated in 3-4 months in spring, is easy to cause the phenomenon of falling spring cold in the north, and can damage crops such as early rice, wheat in the northern area, cotton, peanuts, fruit trees, potatoes and the like in the middle and downstream areas of Yangtze river; the low-temperature cold damage in summer is mainly delayed, is mainly concentrated in high-latitude and high-altitude areas, and can cause the rice in the areas to generate obstacle type cold damage; the low-temperature cold damage in autumn mainly damages autumn growth and overwintering crops sowed in autumn, and can cause insufficient accumulated temperature to influence yield; the cold damage in winter mainly affects tropical crops, which can cause the tropical crops to suffer cold damage and crop cells to lose water and wither. The low-temperature cold damage seriously affects the agricultural production in China, and the yield of grains can be reduced by about 100 hundred million kilograms in years when the severe low-temperature cold damage occurs.
Besides the change of external form, it is more important to slow down the speed of a series of physiological activities of plants and even destroy the plants when the crops are subjected to cold damageIn order to prevent cold damage, the physiological function of the plant is to adopt greenhouse cultivation and greenhouse cultivation under a small part of situations, and the other method is to apply fertilizers for improving the cold resistance of crops to enhance the resistance of the crops to the cold damage. The mechanism of improving the cold resistance of crops by applying fertilizers to regulate the metabolic activities of the crops is basically realized by regulating water/nutrient metabolism related proteins in the crops. For example, when the fulvic acid cold-resistant fertilizer is applied, on one hand, the activity of enzymes in plants is stimulated, cells in the plants are regulated and catalyzed to accelerate the absorption of water and nutrients, the water potential of leaves is reduced, and the metabolic activities such as osmotic pressure and the like are enhanced; on the other hand, inhibition of K in guard cells+The accumulation of (2) can improve the water retention capacity of plants when encountering drought and cold, close the air holes of the leaves or reduce the opening degree, reduce the water transpiration, obviously increase the diffusion resistance of the air holes of the leaves and reduce the transpiration strength of the leaves. During the application process of the fertilizer, based on the mechanism of the fertilizer, the fertilizer components do not directly act on metabolism, but indirectly influence the moisture/nutrient metabolism degree of the crops in a cold damage environment through the product environment influencing the metabolism of the crops, and the cold resistance efficiency after the fertilizer is applied is slow, and the effect is not obvious. Therefore, a liquid fertilizer which comprehensively improves the resistance of crops to low-temperature cold damage after being used is needed, the retention time of the fertilizer on the leaf surface can be prolonged, the scouring of the condensed water of the low-temperature or frost leaves to the fertilizer liquid is avoided, the heat preservation capability of plants is improved, and the negative effect of the low-temperature cold damage is reduced.
Disclosure of Invention
Aiming at the prior art, the invention aims to provide a general low-temperature-resistant liquid fertilizer and a preparation method thereof. The universal low-temperature-resistant liquid fertilizer can improve the resistance of crops to low-temperature cold damage, reduce crop damage caused by the low-temperature cold damage and ensure the stable yield of the crops.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a general low-temperature-resistant liquid fertilizer, which comprises the following raw materials in parts by weight:
500-600 parts of potassium fulvate mother liquor, 30-50 parts of polyvinyl alcohol, 1-2 parts of silane coupling agent, 100-150 parts of water, 50-100 parts of gamma-polyglutamic acid liquid, 20-30 parts of propylene glycol, 100-150 parts of urea, 50-80 parts of monopotassium phosphate, 3-5 parts of boric acid, 1-2 parts of ammonium heptamolybdate, 50-80 parts of monoammonium phosphate, 30-50 parts of salicylic acid and 3-5 parts of brassin.
Preferably, the potassium fulvate mother liquor is a neutral mineral source potassium fulvate mother liquor which takes weathered coal and lignite as raw materials, and the pH value of the mother liquor is 6-7.
Preferably, the content of mineral humic acid in the potassium fulvate mother liquor is 8% -10% and the content of mineral fulvic acid in the potassium fulvate mother liquor is 12% -18%.
Preferably, the gamma-polyglutamic acid liquid is prepared by mixing a polyglutamic acid stock solution with water, and the concentration of the gamma-polyglutamic acid liquid is 3 wt%.
The preferred silane coupling agent is vinyltriethoxysilane.
In a second aspect of the present invention, there is provided a method for preparing a universal low temperature resistant liquid fertilizer, comprising the steps of:
(1) mixing polyvinyl alcohol, potassium fulvate mother liquor and a silane coupling agent to obtain solution A;
(2) mixing water, gamma polyglutamic acid liquid and propylene glycol to obtain liquid B;
(3) and (3) mixing the solution A obtained in the step (1) and the solution B obtained in the step (2), and then sequentially adding urea, monopotassium phosphate, boric acid, ammonium heptamolybdate, monoammonium phosphate, salicylic acid and brassin, and uniformly stirring to obtain the universal low-temperature-resistant liquid fertilizer.
Preferably, in step (1), the solution a is prepared by the following method:
1) adding polyvinyl alcohol into the potassium fulvate mother liquor for 3-5 times at normal temperature, stirring while adding, stirring for 0.5-1 h, then heating to 80-90 ℃, and stirring for 1-2 h;
2) then cooling to 50 ℃, preserving heat and stirring for 1-2 hours;
3) and finally, adding the silane coupling agent while stirring, heating to 80-90 ℃, stirring for 0.5-1 hour, and cooling to room temperature to obtain the solution A.
Preferably, in the step (2), the solution B is prepared by the following method:
adding gamma polyglutamic acid liquid and propylene glycol into water, and stirring at normal temperature for 0.5-1 h to obtain solution B.
Preferably, in the step (3), after the solution A and the solution B are mixed, adding urea, monopotassium phosphate, boric acid, ammonium heptamolybdate, monoammonium phosphate and salicylic acid in sequence, heating to 50 ℃, and stirring for 0.5 hour; and cooling, adding the brassin, and stirring for 10-15 minutes to obtain the universal low-temperature-resistant liquid fertilizer.
In a third aspect of the invention, the application of the general low-temperature-resistant liquid fertilizer in the following 1) or 2) is provided:
1) the fertilizer is used before low-temperature cold damage occurs, so that the damage to crops caused by the low-temperature cold damage is reduced;
2) the fertilizer is used after low-temperature cold damage occurs, and the restoring capability of crops is improved.
Preferably, the general low-temperature-resistant liquid fertilizer is sprayed on the leaf surfaces of crops, the crops are subjected to drop irrigation, root irrigation or water flushing, the recommended spraying dosage is 800 times of blade spraying by diluting 500 times, the recommended spraying dosage is 500 times of blade spraying by diluting 300 times when irrigating the roots, the dosage per mu of water flushing is 8L-10L, and the dosage per mu of drop irrigation is 5L-8L.
The invention has the beneficial effects that:
(1) the low-temperature-resistant liquid fertilizer prepared by the invention combines a plurality of elements which are beneficial to improving the low-temperature-resistant capability of crops, promotes the generation of a plurality of life activities which are beneficial to improving the low-temperature cold damage resistance capability of the crops, reduces the damage to the crops caused by the low-temperature cold damage, can also be repaired and used after the low-temperature cold damage occurs, and improves the crop repair capability.
(2) The low-temperature-resistant liquid fertilizer prepared by the invention can improve the attachment and extension capacity of the fertilizer on the leaf surfaces under the condition of spraying the fertilizer on the leaf surfaces, improve the fertilizer absorption effect, further improve the restoration capacity of crops and reduce the damage of low temperature to the crops.
(3) The low-temperature-resistant liquid fertilizer prepared by the invention can be used 7-10 days before low-temperature cold injury occurs, and can also be repaired and used after the low-temperature cold injury occurs and when the weather is warm, and the application method comprises foliage spraying, drip irrigation, root irrigation and flushing application, and is convenient to use. The invention develops a universal low-temperature-resistant liquid fertilizer aiming at low-temperature cold damage, and has great significance for the agricultural stability and the economic development of China.
Drawings
FIG. 1 shows the ductility and wettability of the liquid on corn leaves after T1 treatment (a) and CK1 treatment (b) spraying.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
As described in the background section, the current mechanism of improving crop cold resistance by regulating crop metabolic activity through fertilizer application is basically realized by regulating water/nutrient metabolism-related proteins in crops. Based on the mechanism, the fertilizer ingredients do not directly act on metabolism, but indirectly influence the moisture/nutrient metabolism degree of crops in a cold damage environment through the product environment influencing the metabolism of the crops, the cold resistance efficiency after application is slow, and the effect is not obvious.
Based on the above, the invention aims to provide a general low-temperature-resistant liquid fertilizer and a preparation method thereof. The invention comprehensively improves the resistance of crops to low-temperature cold damage after being used by compounding various elements. The macroelements of nitrogen, phosphorus and potassium can improve the protein accumulation of crops, improve the content of soluble sugar and the level of cell phospholipid, simultaneously adjust the leaf pores of the crops, inhibit evaporation and adjust the permeability of cell sap to adapt to the stress of cell water caused by low temperature; the trace elements of boron and molybdenum can promote the synthesis of organic phosphorus-containing compounds in crops, improve the content of bound water in the crops and prevent the water loss of cells caused by low temperature; the fulvic acid and the humic acid can improve various enzyme activities in crops, protect the permeability of crop cell membranes and enhance the cold-proof capability of the crops, and meanwhile, the fulvic acid and the humic acid are added to make the liquid black, so that the fulvic acid and humic acid liquid has good heat absorption and heat preservation capabilities; the gamma-polyglutamic acid has good water retention effect, can be degraded and absorbed by crops, promotes the secretion of crop stress protein, and further improves the cold resistance of the crops; the use of the brassin and the salicylic acid can stimulate the crops to perform low-temperature stress reaction in advance and improve the activity of various enzymes of the crops such as SOD, POD, CAT and the like.
The inventor finds that if the retention time of the fertilizer on the leaves can be prolonged, the washing of the fertilizer liquid caused by low-temperature or frost leaf condensate water is avoided, and the resistance of crops to low-temperature cold damage and the restoration capability of the crops after the low-temperature cold damage are effectively improved. The inventor mixes back through certain processing with polyvinyl alcohol, silane coupling agent and neutral potassium fulvate mother liquor, takes place the cross-linking reaction, and promotion solution that can be fine is attached to and extends the ability, under the foliage spray use scene, very big improvement the dwell time of fertilizer on the blade, avoid because of low temperature or frost blade comdenstion water to the washing away of fertilizer liquid, improve the plant heat preservation ability simultaneously, reduce the negative effects of low temperature cold injury.
In order to make the technical solutions of the present application more clearly understood by those skilled in the art, the technical solutions of the present application will be described in detail below with reference to specific embodiments.
The test materials used in the examples of the present invention are all conventional in the art and commercially available.
Example 1
(1) Preparing a solution A:
1) 40g of polyvinyl alcohol is added into 550g of mineral potassium fulvate mother liquor in 4 times at normal temperature, and the mixture is added while stirring for 0.5 hour.
2) Continuously stirring, heating to 85 ℃, and stirring for 1.5 hours;
3) cooling to 50 ℃, preserving heat and stirring for 1 hour;
4) 1.5g of vinyltriethoxysilane was added while stirring, the temperature was raised to 85 ℃ and stirred for 0.5 hour, and the mixture was cooled to room temperature to form solution A.
(2) And B, preparation of a solution B:
to 125g of water, 75g of a 3 wt% gamma-polyglutamic acid solution and 25g of propylene glycol were added under stirring at room temperature, and the mixture was stirred for 0.5 hour to obtain a solution B.
(3) And mixing the solution A and the solution B, stirring for 15 minutes, then sequentially adding 125g of urea, 65g of monopotassium phosphate, 4g of boric acid, 1.5g of ammonium heptamolybdate, 65g of monoammonium phosphate and 40g of salicylic acid, heating to 50 ℃, and stirring for 0.5 hour. And 4g of brassin is added after cooling, and the mixture is stirred for 10 minutes to obtain the universal low-temperature-resistant liquid fertilizer.
Example 2
(1) Preparing a solution A:
1) 30g of polyvinyl alcohol is added into 500g of mineral potassium fulvate mother liquor in 3 times at normal temperature, and the mixture is added while stirring for 0.5 hour.
2) Continuously stirring, heating to 80 ℃, and stirring for 1.5 hours;
3) cooling to 50 ℃, preserving heat and stirring for 1 hour;
4) adding 1g of vinyltriethoxysilane while stirring, heating to 80 ℃, stirring for 0.5 hour, and cooling to room temperature to form solution A.
(2) And B, preparation of a solution B:
to 150g of water, 100g of a 3 wt% gamma-polyglutamic acid solution and 20g of propylene glycol were added under stirring at room temperature, and the mixture was stirred for 0.5 hour to obtain a solution B.
(3) And mixing the solution A and the solution B, stirring for 15 minutes, then sequentially adding 150g of urea, 80g of monopotassium phosphate, 3g of boric acid, 1g of ammonium heptamolybdate, 50g of monoammonium phosphate and 30g of salicylic acid, heating to 50 ℃, and stirring for 0.5 hour. And (3) after cooling, adding 3g of brassin, and stirring for 10 minutes to obtain the universal low-temperature-resistant liquid fertilizer.
Example 3
(1) Preparing a solution A:
1) 50g of polyvinyl alcohol is added into 600g of mineral potassium fulvate mother liquor by 5 times at normal temperature, and the mixture is added while stirring for 1 hour.
2) Continuously stirring, heating to 90 ℃, and stirring for 2 hours;
3) cooling to 50 ℃, preserving heat and stirring for 2 hours;
4) 2g of vinyltriethoxysilane was added while stirring, the temperature was raised to 90 ℃ and stirred for 1 hour, and the mixture was cooled to room temperature to form solution A.
(2) And B, preparation of a solution B:
to 100g of water, 50g of a 3 wt% gamma-polyglutamic acid solution and 30g of propylene glycol were added under stirring at room temperature, and the mixture was stirred for 1 hour to obtain a solution B.
(3) And mixing the solution A and the solution B, stirring for 15 minutes, sequentially adding 100g of urea, 50g of monopotassium phosphate, 5g of boric acid, 2g of ammonium heptamolybdate, 80g of monoammonium phosphate and 50g of salicylic acid, heating to 50 ℃, and stirring for 0.5 hour. And cooling, adding 5g of brassin, and stirring for 10 minutes to obtain the universal low-temperature-resistant liquid fertilizer.
Comparative example 1
(1) To 125g of water, 75g of a 3 wt% gamma-polyglutamic acid solution and 25g of propylene glycol were added under stirring at room temperature, and the mixture was stirred for 0.5 hour to obtain a solution B.
(2) 125g of urea, 65g of monopotassium phosphate, 4g of boric acid, 1.5g of ammonium heptamolybdate, 65g of monoammonium phosphate and 40g of salicylic acid are sequentially added into the solution B, the temperature is raised to 50 ℃, and the mixture is stirred for 0.5 hour. And 4g of brassin is added after cooling, and the mixture is stirred for 10 minutes to obtain the universal low-temperature-resistant liquid fertilizer.
Comparative example 2
(1) Preparing a solution A:
40g of polyvinyl alcohol, 550g of mineral potassium fulvate mother liquor and 1.5g of vinyl triethoxysilane are mixed uniformly to obtain solution A.
(2) And B, preparation of a solution B:
to 125g of water, 75g of a 3 wt% gamma-polyglutamic acid solution and 25g of propylene glycol were added under stirring at room temperature, and the mixture was stirred for 0.5 hour to obtain a solution B.
(3) And mixing the solution A and the solution B, stirring for 15 minutes, then sequentially adding 125g of urea, 65g of monopotassium phosphate, 4g of boric acid, 1.5g of ammonium heptamolybdate, 65g of monoammonium phosphate and 40g of salicylic acid, heating to 50 ℃, and stirring for 0.5 hour. And 4g of brassin is added after cooling, and the mixture is stirred for 10 minutes to obtain the universal low-temperature-resistant liquid fertilizer.
Comparative example 3
(1) Preparing a solution A:
1) 40g of polyvinyl alcohol is added into 550g of mineral potassium fulvate mother liquor in 4 times at normal temperature, and the mixture is added while stirring for 0.5 hour.
2) Continuously stirring, heating to 85 ℃, and stirring for 1.5 hours;
3) cooling to 50 ℃, preserving heat and stirring for 1 hour;
4) 1.5g of vinyltriethoxysilane was added while stirring, the temperature was raised to 85 ℃ and stirred for 0.5 hour, and the mixture was cooled to room temperature to form solution A.
(2) 125g of urea, 65g of monopotassium phosphate, 4g of boric acid, 1.5g of ammonium heptamolybdate, 65g of monoammonium phosphate and 40g of salicylic acid are sequentially added into the solution A, the temperature is raised to 50 ℃, and the mixture is stirred for 0.5 hour. And 4g of brassin is added after cooling, and the mixture is stirred for 10 minutes to obtain the universal low-temperature-resistant liquid fertilizer.
Test example 1
In order to further illustrate the application value of the invention, the inventor adopts a pot treatment mode and selects the tomatoes in the seedling stage to perform an effect test under the irrigation use condition.
The test was conducted with 8 treatments in total, a blank Control (CK), a conventional nutritional type liquid fertilizer (CK1), a low temperature prevention type liquid fertilizer (T1) prepared in example 1, a low temperature prevention type liquid fertilizer (T2) prepared in example 2, a low temperature prevention type liquid fertilizer (T3) prepared in example 3, a low temperature prevention type liquid fertilizer (CK2) prepared in comparative example 1, a low temperature prevention type liquid fertilizer (CK3) prepared in comparative example 2, a low temperature prevention type liquid fertilizer (CK4) prepared in comparative example 3, wherein the indexes of the conventional nutritional type liquid fertilizer are N: 50g/L, P2O5≥50g/L,K2O is more than or equal to 300 g/L. The manufacturer of conventional nutritional liquid fertilizers is Israel Haihua Agrochemistry, Inc.
The test method comprises the following steps: 24 tomato seedlings with uniform growth vigor are selected, and 3 tomato seedlings are treated by 8 tomato seedlings. Performing blank control treatment on CK, and irrigating clean water with equal quantity; diluting the CK1 conventional nutritional liquid fertilizer by 800 times and irrigating; T1-T3 and CK 2-4 refer to that the low-temperature-resistant liquid fertilizers prepared in the embodiments 1-3 and the comparative examples 1-3 are respectively diluted by 800 times and irrigated, and the irrigation amount of all treatments is the same. After 10 days of treatment, the potted tomato seedlings are moved into an artificial climate box, the temperature is gradually reduced from 25 ℃ to 4 ℃, the temperature is respectively maintained at 25 ℃, 20 ℃, 15 ℃, 10 ℃, 8 ℃ and 4 ℃ for 3 hours, after low-temperature stress, the temperature is gradually increased to 20 ℃, the temperature is recovered for 1 hour, the fresh weight, the soluble sugar content and the relative conductivity of the overground plant are measured, and the obtained results are shown in table 1.
TABLE 1 Effect of different treatments on the Low temperature resistance of tomatoes under irrigation conditions
| Treatment of | Fresh weight of plant (g) | Soluble sugar (%) | Relative conductivity (%) |
| CK | 6.33d | 0.63c | 21.00a |
| CK1 | 7.47c | 0.81b | 18.18b |
| T1 | 9.90a | 1.11a | 14.22d |
| T2 | 9.32a | 1.03a | 15.27d |
| T3 | 9.57a | 1.07a | 15.18d |
| CK2 | 8.12b | 0.87b | 16.81c |
| CK3 | 8.16b | 0.85b | 16.96c |
| CK4 | 8.23b | 0.89b | 16.66c |
Test results show that the resistance of tomato seedlings to low-temperature stress can be obviously improved under the irrigation condition by using the example 1 based on the invention, and the specific expression is that the dry weight of the tomato seedlings is improved by 56.40% compared with a blank control, is improved by 32.53% compared with a nutritional liquid fertilizer and is improved by 20.29-21.92% compared with a comparative example; the soluble sugar content of the plant is increased by 76.19 percent compared with a blank control, 37.03 percent compared with a nutritional liquid fertilizer and 24.72 to 30.59 percent compared with a comparative example; the relative conductivity is reduced by 32.29 percent compared with a blank control, reduced by 21.78 percent compared with a nutritional liquid fertilizer, and reduced by 14.65 to 16.16 percent compared with a comparative example. The differences among the three examples are not significant, but all the data have the best effect of example 1 and are all obviously superior to the comparative example.
Test example 2
In order to further illustrate the application value of the invention, the inventor adopts a pot treatment mode and selects the tomatoes in the seedling stage to carry out a verification test under the condition of spraying the leaves.
The test was conducted with a total of 8 treatments, namely, a blank Control (CK), a conventional nutritional type liquid fertilizer (CK1), a low-temperature prevention type liquid fertilizer (T1) prepared in example 1, a low-temperature prevention type liquid fertilizer (T2) prepared in example 2, a low-temperature prevention type liquid fertilizer (T3) prepared in example 3, a low-temperature prevention type liquid fertilizer (CK2) prepared in comparative example 1, a low-temperature prevention type liquid fertilizer (CK3) prepared in comparative example 2, a low-temperature prevention type liquid fertilizer (CK4) prepared in comparative example 3, wherein the conventional nutritional type liquid fertilizer (CK) was used as a raw material for the testThe indexes of the liquid fertilizer are N: 50g/L, P2O5≥80g/L,K2O is more than or equal to 70g/L, and humic acid is more than or equal to 30 g/L. The manufacturer of conventional nutritional liquid fertilizers is Israel Haihua Agrochemistry, Inc.
The test method comprises the following steps: 24 tomato seedlings with uniform growth vigor are selected, and 3 tomato seedlings are treated by 8 tomato seedlings. Performing blank control treatment on the CK, spraying equivalent clear water, and spraying the CK1 conventional nutritional liquid fertilizer after diluting by 800 times; T1-T3 and CK 2-4 are used for spraying the low-temperature-resistant liquid fertilizers prepared in the embodiments 1-3 and the comparative examples 1-3 after being diluted by 800 times respectively, the spraying amount of all the treatments is the same, and the fertilizers are sprayed once every 7 days for 2 times. After the second spraying treatment for 7 days, the potted tomato seedlings are moved into an artificial climate box, the temperature is gradually reduced from 25 ℃ to 4 ℃, the temperature is respectively maintained at 25 ℃, 20 ℃, 15 ℃, 10 ℃, 8 ℃ and 4 ℃ for 3 hours, after low-temperature stress, the temperature is gradually increased to 20 ℃, the temperature is recovered for 1 hour, and the fresh weight, the soluble sugar content and the relative conductivity of the overground plant are measured, and the obtained results are shown in table 2.
TABLE 2 Effect of different treatment foliar spray conditions on Low temperature resistance of tomatoes
| Treatment of | Fresh weight of plant (g) | Soluble sugar (%) | Relative conductivity (%) |
| CK | 7.11d | 0.81c | 20.82a |
| CK1 | 8.43c | 0.93b | 18.29b |
| T1 | 10.92a | 1.32a | 14.01d |
| T2 | 10.16a | 1.21a | 14.31d |
| T3 | 10.35a | 1.27a | 14.35d |
| CK2 | 9.12b | 1.02b | 15.78c |
| CK3 | 9.17b | 1.01b | 15.69c |
| CK4 | 9.32b | 0.99b | 15.99c |
Test results show that the resistance of tomato seedlings to low-temperature adversity can be obviously improved under the condition of foliage spraying by using the method of example 1 based on the invention, and the specific expression is that the dry weight of the tomato seedlings is improved by 53.59 percent compared with a blank control, is improved by 29.54 percent compared with a nutritional liquid fertilizer, and is 17.17 to 19.74 percent higher than that of a comparative example; the soluble sugar content of the plant is improved by 62.96 percent compared with a blank control, by 41.94 percent compared with a nutritional liquid fertilizer and by 29.41 to 33.33 percent compared with a comparative example; compared with a blank control, the relative conductivity is reduced by 32.01 percent, compared with a nutritional liquid fertilizer, the relative conductivity is reduced by 23.40 percent, and compared with a comparative example, the relative conductivity is reduced by 10.71 to 12.38 percent. The contrast difference among the 3 examples is not significant, but all the data are optimal to the effect of the example 1 and are remarkably superior to the comparative example.
Test example 3
In order to further illustrate the application value of the invention, the inventor adopts a pot treatment mode, and after the tomatoes in the seedling stage are selected to be subjected to low-temperature generation, the leaf spraying recovery contrast effect is verified.
The test was conducted with a total of 8 treatments, a blank Control (CK), a conventional nutritional type liquid fertilizer (CK1), a low temperature prevention type liquid fertilizer (T1) prepared in example 1, a low temperature prevention type liquid fertilizer (T2) prepared in example 2, a low temperature prevention type liquid fertilizer (T3) prepared in example 3, a low temperature prevention type liquid fertilizer (CK2) prepared in comparative example 1, a low temperature prevention type liquid fertilizer (CK3) prepared in comparative example 2, and a low temperature prevention type liquid fertilizer (CK4) prepared in comparative example 3. The manufacturer of conventional nutritional liquid fertilizers is Israel Haihua Agrochemistry, Inc.
The test method comprises the following steps: 24 tomato seedlings with uniform growth vigor are selected, and 3 tomato seedlings are treated by 8 tomato seedlings. Firstly, tomato seedlings are moved into an artificial climate box, the temperature is gradually reduced from 25 ℃ to 4 ℃, the temperature is respectively maintained at 25 ℃, 20 ℃, 15 ℃, 10 ℃, 8 ℃ and 4 ℃ for 3 hours, after low-temperature stress, the temperature is gradually increased to 20 ℃ for recovery for 3 days. Performing related treatment after 3 days, wherein CK is subjected to blank control treatment, equivalent clear water is sprayed, and CK1 conventional nutritional liquid fertilizer is sprayed after being diluted by 800 times; T1-T3 and CK 2-4 are used for spraying the low-temperature-resistant liquid fertilizers prepared in the embodiments 1-3 and the comparative examples 1-3 after being diluted by 800 times respectively, the spraying amount of all treatments is the same, and the fresh weight of the tomato seedlings is tested after 7 days of treatment, so that the recovery effect of the tomato seedlings is verified.
TABLE 3 Effect of different treated foliar spray conditions on tomato recovery after Low temperatures
| Treatment of | Fresh weight of plant (g) |
| CK | 9.37d |
| CK1 | 10.32c |
| T1 | 14.57a |
| T2 | 14.16a |
| T3 | 14.27a |
| CK2 | 12.18b |
| CK3 | 12.38b |
| CK4 | 12.79b |
The test results show that the fresh weight average of the plants using the 3 examples based on the invention is significantly better than the respective proportions, with the best results from example 1.
Test example 4
In order to further illustrate the application value of the low-temperature resistant liquid fertilizer, the leaf spraying treatment mode of the inventor is adopted, and the corn leaf which is difficult to adsorb leaf fertilizer is selected for testing, so that the ductility and wettability of the low-temperature resistant liquid fertilizer produced under the condition of the invention are verified.
The test method comprises the following steps: the test was conducted with a total of 8 treatments, namely, a clear water Control (CK), a 800-fold dilution of a conventional nutritional liquid fertilizer (CK1), a 800-fold dilution of a low-temperature-resistant liquid fertilizer prepared in example 1 (T1), a 800-fold dilution of a low-temperature-resistant liquid fertilizer prepared in example 2 (T2), a 800-fold dilution of a low-temperature-resistant liquid fertilizer prepared in example 3 (T3), a 800-fold dilution of a low-temperature-resistant liquid fertilizer prepared in comparative example 1 (CK2), a 800-fold dilution of a low-temperature-resistant liquid fertilizer prepared in comparative example 2 (CK3), and a 800-fold dilution of a low-temperature-resistant liquid fertilizer prepared in comparative example 3 (CK 4). The liquid in each of the above 8 treatments was sampled, and the surface tension of the liquid was measured by a BZY-1 surface tension meter, and the average value was obtained by repeating the treatment 3 times. Leaf area meter S (cm) for measuring leaf area of uniform growing corn leaves2) Weighing and then measuring W0(mg), the leaf blade was immersed in each of the above 8 treatment liquids, left for 5 seconds, and the weight W was measured by taking out with tweezers until no liquid drops were dropped1(mg), maximum retention R (mg/cm)2) The calculation formula is as follows: r ═ W0-W1) (ii)/2S. The manufacturer of conventional nutritional liquid fertilizers is Israel Haihua Agrochemistry, Inc.
TABLE 4 surface tension and maximum holdup for different treatments
| Treatment of | Surface tension (mN/m) | Maximum retention R |
| CK | 72.5 | 2.54 |
| CK1 | 56.42 | 6.53 |
| T1 | 21.08 | 52.61 |
| T2 | 32.65 | 38.72 |
| T3 | 30.16 | 41.25 |
| CK2 | 35.62 | 36.27 |
| CK3 | 39.42 | 32.56 |
| CK4 | 37.25 | 31.22 |
The reduction in surface tension may increase the ductility and wettability of the liquid on the blade, and the increase in maximum retention indicates a strong adherence of the liquid on the blade. From the results of the tests in Table 4, the surface treated with T1 had the lowest tension and the highest maximum retention, which was the best ductility, wettability and retention as foliar application.
FIG. 1 shows that T1 treatment (a) and CK1 treatment (b) are carried out, T1 treatment is sprayed on corn leaves and evenly spread on the leaves, and CK1 treatment is sprayed on the corn leaves and has poor wettability and ductility in the form of liquid drops.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. The general low-temperature-resistant liquid fertilizer is characterized by comprising the following raw materials in parts by weight:
500-600 parts of potassium fulvate mother liquor, 30-50 parts of polyvinyl alcohol, 1-2 parts of silane coupling agent, 100-150 parts of water, 50-100 parts of gamma-polyglutamic acid liquid, 20-30 parts of propylene glycol, 100-150 parts of urea, 50-80 parts of monopotassium phosphate, 3-5 parts of boric acid, 1-2 parts of ammonium heptamolybdate, 50-80 parts of monoammonium phosphate, 30-50 parts of salicylic acid and 3-5 parts of brassin.
2. The universal low-temperature-resistant liquid fertilizer as claimed in claim 1, wherein the potassium fulvate mother liquor is a neutral mineral potassium fulvate mother liquor prepared from weathered coal and lignite, and has a pH value of 6-7.
3. The universal low-temperature-resistant liquid fertilizer as claimed in claim 2, wherein the content of mineral humic acid in the potassium fulvate mother liquor is 8% -10% and the content of mineral fulvic acid is 12% -18%.
4. The universal low temperature prevention liquid fertilizer as claimed in claim 1, wherein the gamma-polyglutamic acid liquid is prepared by mixing a polyglutamic acid stock solution with water, and the concentration of the gamma-polyglutamic acid liquid is 3 wt%.
5. The preparation method of the universal low-temperature-resistant liquid fertilizer as claimed in any one of claims 1 to 4, characterized by comprising the following steps:
(1) mixing polyvinyl alcohol, potassium fulvate mother liquor and a silane coupling agent to obtain solution A;
(2) mixing water, gamma polyglutamic acid liquid and propylene glycol to obtain liquid B;
(3) and (3) mixing the solution A obtained in the step (1) and the solution B obtained in the step (2), and then sequentially adding urea, monopotassium phosphate, boric acid, ammonium heptamolybdate, monoammonium phosphate, salicylic acid and brassin, and uniformly stirring to obtain the universal low-temperature-resistant liquid fertilizer.
6. The method according to claim 5, wherein in the step (1), the solution A is prepared by:
1) adding polyvinyl alcohol into the potassium fulvate mother liquor for 3-5 times at normal temperature, stirring while adding, stirring for 0.5-1 h, then heating to 80-90 ℃, and stirring for 1-2 h;
2) then cooling to 50 ℃, preserving heat and stirring for 1-2 hours;
3) and finally, adding the silane coupling agent while stirring, heating to 80-90 ℃, stirring for 0.5-1 hour, and cooling to room temperature to obtain the solution A.
7. The method according to claim 5, wherein in the step (2), the solution B is prepared by:
adding gamma polyglutamic acid liquid and propylene glycol into water, and stirring at normal temperature for 0.5-1 h to obtain solution B.
8. The preparation method according to claim 5, wherein in the step (3), after the solution A and the solution B are mixed, urea, monopotassium phosphate, boric acid, ammonium heptamolybdate, monoammonium phosphate and salicylic acid are added in sequence, the temperature is raised to 50 ℃, and the mixture is stirred for 0.5 hour; and cooling, adding the brassin, and stirring for 10-15 minutes to obtain the universal low-temperature-resistant liquid fertilizer.
9. The use of the universal low temperature resistant liquid fertilizer of any one of claims 1 to 4 in 1) or 2) as follows:
1) the fertilizer is used before low-temperature cold damage occurs, so that the damage to crops caused by the low-temperature cold damage is reduced;
2) the fertilizer is used after low-temperature cold damage occurs, and the restoring capability of crops is improved.
10. The application of the universal low-temperature-resistant liquid fertilizer as claimed in claim 9, wherein the universal low-temperature-resistant liquid fertilizer as claimed in any one of claims 1 to 4 is sprayed on the leaf surfaces of crops, and the crops are subjected to drip irrigation, root irrigation or water flushing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111045466.XA CN113773137B (en) | 2021-09-07 | 2021-09-07 | Universal low-temperature-resistant liquid fertilizer and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111045466.XA CN113773137B (en) | 2021-09-07 | 2021-09-07 | Universal low-temperature-resistant liquid fertilizer and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113773137A true CN113773137A (en) | 2021-12-10 |
| CN113773137B CN113773137B (en) | 2023-05-05 |
Family
ID=78841518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111045466.XA Active CN113773137B (en) | 2021-09-07 | 2021-09-07 | Universal low-temperature-resistant liquid fertilizer and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113773137B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115572197A (en) * | 2022-10-27 | 2023-01-06 | 山东农大肥业科技股份有限公司 | Liquid fertilizer for crop rapid rooting and seedling raising and preparation method and application thereof |
| CN115812705A (en) * | 2022-11-29 | 2023-03-21 | 陕西科技大学 | Humic acid nutritional type plant antifreezing agent and preparation method thereof |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1033080A2 (en) * | 1999-03-03 | 2000-09-06 | Kuraray Co., Ltd. | Oxygen absorptive resin composition |
| CN101792348A (en) * | 2010-03-17 | 2010-08-04 | 常玉 | Humic acid liquid fertilizer and preparation method thereof |
| CN103641579A (en) * | 2013-11-06 | 2014-03-19 | 马鞍山科邦生态肥有限公司 | A nutritional-type fertilizer and a preparation method thereof |
| CN104973937A (en) * | 2015-06-08 | 2015-10-14 | 东莞一翔液体肥料有限公司 | Special seed fertilizer for strong rice seedling liquid suspension and preparation method thereof |
| CN105237156A (en) * | 2015-09-09 | 2016-01-13 | 安徽稻稼云社生物科技有限公司 | High-purity liquid fertilizer having seedling strengthening function and preparation method thereof |
| CN105948943A (en) * | 2016-06-21 | 2016-09-21 | 菏泽金正大生态工程有限公司 | Special antifreezing foliage fertilizer for garlic and application thereof |
| CN106831158A (en) * | 2017-03-01 | 2017-06-13 | 新昌县天姥园艺发展有限公司 | Extend auxiliary agent of Plant leaf fertilizer lasting period and preparation method thereof |
| CN107324891A (en) * | 2017-07-26 | 2017-11-07 | 望江县乡缘农业有限责任公司 | A kind of Rice Cropping slow release fertilizer |
| CN108314539A (en) * | 2018-03-29 | 2018-07-24 | 李侠 | A kind of preparation method of the rice base manure of coated slow-release containing mineral element |
| CN108440036A (en) * | 2018-06-25 | 2018-08-24 | 合肥雪立歆农业科技有限公司 | A kind of long-acting environment friendly composite fertilizer and preparation method thereof |
| CN109503285A (en) * | 2018-12-10 | 2019-03-22 | 深圳市芭田生态工程股份有限公司 | Liquid fertilizer and preparation method thereof, cold-resistance agent |
| CN111777446A (en) * | 2020-06-12 | 2020-10-16 | 施可丰化工股份有限公司 | Mineral source potassium fulvate water-soluble fertilizer and preparation method thereof |
| CN111848283A (en) * | 2020-08-04 | 2020-10-30 | 深圳市芭田生态工程股份有限公司 | Repairing fertilizer after cold injury and disaster and preparation method and application thereof |
| CN111995470A (en) * | 2020-09-11 | 2020-11-27 | 成都云图控股股份有限公司 | Mineral source fulvic acid slow release fertilizer and preparation method thereof |
-
2021
- 2021-09-07 CN CN202111045466.XA patent/CN113773137B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1033080A2 (en) * | 1999-03-03 | 2000-09-06 | Kuraray Co., Ltd. | Oxygen absorptive resin composition |
| CN101792348A (en) * | 2010-03-17 | 2010-08-04 | 常玉 | Humic acid liquid fertilizer and preparation method thereof |
| CN103641579A (en) * | 2013-11-06 | 2014-03-19 | 马鞍山科邦生态肥有限公司 | A nutritional-type fertilizer and a preparation method thereof |
| CN104973937A (en) * | 2015-06-08 | 2015-10-14 | 东莞一翔液体肥料有限公司 | Special seed fertilizer for strong rice seedling liquid suspension and preparation method thereof |
| CN105237156A (en) * | 2015-09-09 | 2016-01-13 | 安徽稻稼云社生物科技有限公司 | High-purity liquid fertilizer having seedling strengthening function and preparation method thereof |
| CN105948943A (en) * | 2016-06-21 | 2016-09-21 | 菏泽金正大生态工程有限公司 | Special antifreezing foliage fertilizer for garlic and application thereof |
| CN106831158A (en) * | 2017-03-01 | 2017-06-13 | 新昌县天姥园艺发展有限公司 | Extend auxiliary agent of Plant leaf fertilizer lasting period and preparation method thereof |
| CN107324891A (en) * | 2017-07-26 | 2017-11-07 | 望江县乡缘农业有限责任公司 | A kind of Rice Cropping slow release fertilizer |
| CN108314539A (en) * | 2018-03-29 | 2018-07-24 | 李侠 | A kind of preparation method of the rice base manure of coated slow-release containing mineral element |
| CN108440036A (en) * | 2018-06-25 | 2018-08-24 | 合肥雪立歆农业科技有限公司 | A kind of long-acting environment friendly composite fertilizer and preparation method thereof |
| CN109503285A (en) * | 2018-12-10 | 2019-03-22 | 深圳市芭田生态工程股份有限公司 | Liquid fertilizer and preparation method thereof, cold-resistance agent |
| CN111777446A (en) * | 2020-06-12 | 2020-10-16 | 施可丰化工股份有限公司 | Mineral source potassium fulvate water-soluble fertilizer and preparation method thereof |
| CN111848283A (en) * | 2020-08-04 | 2020-10-30 | 深圳市芭田生态工程股份有限公司 | Repairing fertilizer after cold injury and disaster and preparation method and application thereof |
| CN111995470A (en) * | 2020-09-11 | 2020-11-27 | 成都云图控股股份有限公司 | Mineral source fulvic acid slow release fertilizer and preparation method thereof |
Non-Patent Citations (6)
| Title |
|---|
| 宋元林等: "《蔬菜优质四季栽培 芹菜 莴苣》", 31 August 2000, 科学技术文献出版社 * |
| 康智勇等: "环境友好聚乙烯醇粘合剂研究", 《中国胶粘剂》 * |
| 张有平等: "《无公害猕猴桃实用技术问答》", 31 January 2010, 西北农林科技大学出版社 * |
| 温辉梁等: "《化工助剂》", 31 December 2009, 江西科学技术出版社 * |
| 王振平等: "《果树设施环境调控理论与优质高效栽培技术》", 31 December 2017, 阳光出版社 * |
| 郑平等: "《黄腐酸类物质在农业与医药中的应用》", 30 June 1993, 化学工业出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115572197A (en) * | 2022-10-27 | 2023-01-06 | 山东农大肥业科技股份有限公司 | Liquid fertilizer for crop rapid rooting and seedling raising and preparation method and application thereof |
| CN115812705A (en) * | 2022-11-29 | 2023-03-21 | 陕西科技大学 | Humic acid nutritional type plant antifreezing agent and preparation method thereof |
| CN115812705B (en) * | 2022-11-29 | 2024-03-01 | 陕西科技大学 | Humic acid nutritional type plant antifreezing agent and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113773137B (en) | 2023-05-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113773137B (en) | Universal low-temperature-resistant liquid fertilizer and preparation method thereof | |
| CN102349551B (en) | Plant culturing medium regulator and preparation method thereof | |
| Kumawat et al. | Effect of integrated nutrient management on productivity, nutrient uptake and economics of rainfed pigeonpea (Cajanus cajan) and blackgram (Vigna mungo) intercropping system | |
| CN108863615B (en) | Cold-resistant nutritional agent for fruit trees and application thereof | |
| CN107347546B (en) | The cultural method of peach in a kind of continuous cropping peach garden | |
| CN105766327A (en) | Cultivation method of Camellia oleifera Abel | |
| CN105481519A (en) | Balanced type liquid water-soluble fertilizer and preparation method thereof | |
| CN102936172A (en) | Loss-controlled fertilizer containing amino acid and organic matters | |
| CN105104051A (en) | Cultivation method for high-yield Chinese scholartree | |
| CN108976014A (en) | It a kind of vegetables compounding anti-icing fluid and preparation method thereof and uses | |
| Kamatyanatti et al. | Effect of integrated nutrient management on growth, flowering and yield of subtropical plum cv. Kala Amritsari | |
| Loomis | Temperature and other factors affecting the rest period of potato tubers | |
| CN106508571A (en) | Cultivation method for litchi seedlings | |
| CN107586170B (en) | Leaf vegetable nutrient and application thereof | |
| CN110903122A (en) | Water-soluble fertilizer set meal for fruit trees in full bearing period and application | |
| CN115024147B (en) | Fertilizing method for improving high-quality fruit rate of red crisp pears | |
| CN106106005A (en) | A kind of cultural method of Longan Seedlings | |
| CN105145042A (en) | Soil cultivation method for potato virus-free basic seeds | |
| CN110204374A (en) | A kind of tomato fertilizer and its application method and application | |
| CN107810820A (en) | A kind of implantation methods of Jasmine | |
| CN112586157A (en) | Method for controlling nitrogen and phosphorus loss in early spring period of rice field in cold and cool areas | |
| CN112244041A (en) | Sesame salt-resistant seedling-protecting agent and using method thereof | |
| CN111837497A (en) | Method for mixed planting of high-yield forage grass and soil remediation in saline-alkali soil | |
| CN112898089A (en) | Fish protein functional biological fertilizer and preparation method thereof | |
| CN113087562A (en) | Chelated liquid fertilizer containing 5-aminolevulinic acid and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 271699 Feicheng high tech Development Zone, Tai'an, Shandong Patentee after: Shandong Nongda Feiye Technology Co.,Ltd. Address before: 271600 Feicheng High-tech Development Zone, Taian City, Shandong Province Patentee before: SHANDONG AGRUNIV FERT SCITECH Co.,Ltd. |