AU2020104406A4 - Citric acid organic foliar fertilizer, and preparation method and use thereof - Google Patents
Citric acid organic foliar fertilizer, and preparation method and use thereof Download PDFInfo
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- AU2020104406A4 AU2020104406A4 AU2020104406A AU2020104406A AU2020104406A4 AU 2020104406 A4 AU2020104406 A4 AU 2020104406A4 AU 2020104406 A AU2020104406 A AU 2020104406A AU 2020104406 A AU2020104406 A AU 2020104406A AU 2020104406 A4 AU2020104406 A4 AU 2020104406A4
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- citric acid
- foliar fertilizer
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B7/00—Fertilisers based essentially on alkali or ammonium orthophosphates
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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
- C05G5/00—Fertilisers characterised by their form
- C05G5/20—Liquid fertilisers
- C05G5/23—Solutions
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
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- Pest Control & Pesticides (AREA)
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Abstract
The present disclosure pertains to the technical field of fertilizer production and discloses a
citric acid organic foliar fertilizer and a preparation method and use thereof. The citric acid
organic foliar fertilizer contains 150-200 g/L of organic matters, 40-70 g/L of N, 10-20 g/L
of P205 , 40-60 g/L of K20 and 20-30 g/L of Zn, wherein the organic matters are the organic
matters in the citric acid fermentation tail solution. The present disclosure uses the citric
acid fermentation tail solution concentrate as the mother liquor, which saves the post
treatment process of the tail solution, and at the same time converts industrial waste into
organic foliar fertilizer, turning waste into treasure; the organic matters in the foliar
fertilizer can enhance stomatal conductance and promote leaf chlorophyll accumulation,
thereby increasing the photosynthesis rate, transpiration rate and water use efficiency of the
leaves. Zn is added to the foliar fertilizer of the present disclosure and works together with
the organic matters to improve fruit quality, such as color, yield and sweetness, and
promote early ripening.
1/1
DRAWINGS:
FIG.1
Description
1/1
FIG.1
[0001] The present disclosure relates to the technical field of fertilizer production, in particular to a citric acid organic foliar fertilizer and a preparation method and use thereof.
[0002] After the soil is fertilized, various nutrients are first adsorbed by the soil. Some fertilizers must undergo a transformation process in the soil, and then be absorbed by the crop roots through ion exchange or diffusion, and transported to the leaves. The nutrient transport distance is long and the speed is slow. In addition, long-term application of chemical fertilizers to the soil is likely to cause the accumulation of nitrates in groundwater and vegetables, and cause serious harm to human health and the natural environment. Therefore, it is necessary to improve the fertilization method for the development of modem agriculture.
[0003] Foliar fertilizer is a kind of fertilizer through which nutrient elements are applied to the surface of crop leaves and are absorbed by the leaves to exert their functions. The foliar fertilization method can appropriately reduce the amount of soil fertilization, reduce the nitrates in the plant and the residual mineral nitrogen in the soil, and reduce the pollution of the soil and the water source. Moreover, by using foliar fertilization, various nutrients can be quickly absorbed by crop leaves, directly enter the plant body through the stomata, participate in the metabolism of the crop, and solve the nutrient deficiency problem of the crop in time. It takes effect faster than soil fertilization. Therefore, foliar fertilization is a fertilization technique that can kill two birds with one stone. In recent years, with the improvement of fertilization technology, foliar fertilization, as a measure to strengthen crop nutrition and prevent certain nutrient deficiency diseases, has been rapidly promoted and applied, and has made a lot of contributions to agricultural production.
[0004] The production of citric acid in China is mainly based on dried potatoes, corn, and the like as raw materials, followed by raw material processing, fermentation, extraction and purification processes to obtain the product. The citric acid fermentation tail solution is a high concentration wastewater produced in the process for the production of citric acid, which mainly comes from the neutralization, sugar washing and ion exchanger regeneration sections. The components in the wastewater are complex, and the chemical oxygen demand (COD) is large. Serious pollution would be caused if it is directly discharged, and even discharge after treatment would consume a large amount of energy. However, the citric acid fermentation tail solution is not useless because it contains a large amount of organic matters. Therefore, the development of an organic foliar fertilizer with the citric acid fermentation tail solution as the main component is not only environmentally friendly, but also has significant economic value.
[0005] In view of the problems existing in the background art, the present disclosure provides a citric acid organic foliar fertilizer and a preparation method and use thereof. The main raw material of the citric acid organic foliar fertilizer of the present disclosure is derived from the citric acid fermentation tail solution concentrate, which turns waste into treasure, has rich nutrition, rapid fertilizer efficiency and very good economic benefits.
[0006] In order to achieve the purpose of the present disclosure, the citric acid organic foliar fertilizer of the present disclosure contains 150-200 g/L of organic matters, 40-70 g/L of N, 10-20 g/L of P 2 05 , 40-60 g/L of K20 and 20-30 g/L of Zn, wherein the organic matters are the organic matters in the citric acid fermentation tail solution.
[0007] Preferably, the citric acid organic foliar fertilizer contains 155-180 g/L of organic matters, 50-65 g/L of N, 13-17 g/L of P2 05 , 45-55 g/L of K20 and 23-27 g/L of Zn.
[0008] More preferably, the citric acid organic foliar fertilizer contains 160 g/L of organic matters, 60 g/L of N, 15 g/L of P 2 0 5, 50 g/L of K20 and 25 g/L of Zn.
[0009] Further, the present disclosure provides a method for preparing the above-mentioned citric acid organic foliar fertilizer, the method comprising the following steps:
[0010] (1) Concentrating the citric acid fermentation tail solution by evaporation to obtain a mother liquor, wherein the mother liquor is 1/25-1/15 of the volume of the citric acid fermentation tail solution;
[0011] (2) Mixing the mother liquor instep (1) with a nitrogen fertilizer, a phosphorus fertilizer, a potassium fertilizer and a zinc fertilizer uniformly to obtain the citric acid organic foliar fertilizer.
[0012] Further, the mother liquor in step (1) contains 150-200 g/L of organic matters, -70 g/L of N, 1-10 g/L of P 2 05 and 1-20 g/L of K20.
[0013] Preferably, the mother liquor in the step (1) contains 160 g/L of organic matter, 55 g/L of N, 7 g/L of P 2 05 and 8 g/L of K20.
[0014] Further, the temperature of the evaporation concentration instep (1) is 70-85°C.
[0015] Further, instep (2), the nitrogen fertilizer is urea and/or monoammonium phosphate; the phosphorus fertilizer is potassium dihydrogen phosphate and/or monoammonium phosphate; the potassium fertilizer is potassium sulfate and/or potassium dihydrogen phosphate; and the zinc fertilizer is zinc sulfate.
[0016] Further, instep (2), the mixing temperature is 60-75°C.
[0017] In another aspect, the present disclosure also provides a use of the above-mentioned citric acid organic foliar fertilizer, i.e., its use in crop planting.
[0018] Further, when the citric acid organic foliar fertilizer is used in crop planting, it is applied on the stems and leaves of the crop by spraying.
[0019] Further, the crop is grapes, and the amount of the fertilizer applied by spraying is -15 L/mu (mu, a traditional Chinese unit of area, 1 mu=667 m 2 ) during the whole growth period.
[0020] Compared with the existing technology, the present disclosure has the following advantages:
[0021] (1) The present disclosure uses the citric acid fermentation tail solution concentrate as the mother liquor, which saves the post-treatment process of the tail solution, and at the same time converts industrial waste into an organic foliar fertilizer, turning waste into treasure;
[0022] (2) The concentrated mother liquor of the present disclosure is enriched with nutrients, amino acids and residual sugars, which can enhance the disease resistance of crops, significantly increase crop yield, and improve crop quality at low cost;
[0023] (3) The organic matters in the foliar fertilizer of the present disclosure can enhance stomatal conductance and promote leaf chlorophyll accumulation, thereby increasing the photosynthesis rate, transpiration rate and water use efficiency of the leaves. Zn is added to the foliar fertilizer of the present disclosure and works together with the organic matters to promote fruit coloring and sugar accumulation, which not only significantly improves fruit quality and yield, but also has a certain effect on promoting early ripening.
[0024] (4) The mother liquor obtained by concentrating the citric acid fermentation tail solution in the present disclosure is uniformly mixed with nitrogen, phosphate, potassium and zinc fertilizers, and the resulting citric acid organic foliar fertilizer has a wide range of applications, is safe and non-toxic after use and has rapid fertilizer efficiency as well as good economic benefits.
[0025] The left side of FIG. 1 shows the grapes without the application of the organic foliar fertilizer obtained in Example 1 (control group of deionized water), and the right side shows the grapes with the application of the organic foliar fertilizer obtained in Example 1.
[0026] In order to make the purpose, technical solutions and advantages of the present disclosure clearer, the present disclosure is described hereinbelow in detail in conjunction with the accompanying drawing and examples. Some of the additional aspects and advantages of the present disclosure will be demonstrated in the following description, and some of them will become obvious from the following description, or be understood through the practice of the present disclosure. It should be understood that the following description is only used to explain the present disclosure, not to limit the present disclosure.
[0027] The source of the organic matters in the present disclosure is the organic matters in the citric acid fermentation tail solution. The organic matters are enriched with amino acids and residual sugars, which can enhance the disease resistance of crops, significantly increase crop yield, and improve crop quality. The source of the citric acid fermentation tail solution is not specifically limited in the present disclosure, as long as the source of the citric acid fermentation tail solution is well known in the art. For example, dried potatoes and corn are used as raw materials, and successively subjected to raw material processing, fermentation, extraction and purification processes to obtain the product, and the wastewater generated in the neutralization, sugar washing and ion exchanger regeneration sections is taken as the citric acid fermentation tail solution. In the examples of the present disclosure, the citric acid fermentation tail solution is from Jiangsu Guoxin Union Energy Co., Ltd.
[0028] In the present disclosure, the sources of the N, P 2 05 , K20 and Zn include the citric acid fermentation tail solution as well as nitrogen, phosphate, potassium and zinc fertilizers. The forms of the added nitrogen, phosphate, potassium and zinc fertilizers are not limited. The nitrogen fertilizer is preferably urea and/or monoammonium phosphate; the phosphorus fertilizer is preferably potassium dihydrogen phosphate and/or monoammonium phosphate; the potassium fertilizer is preferably potassium sulfate and/or potassium dihydrogen phosphate; and the zinc fertilizer is preferably zinc sulfate. The sources of the nitrogen, phosphate, potassium and zinc fertilizers are not particularly limited, and any agricultural fertilizer products that are commercially available and water-soluble can be used.
[0029] The citric acid organic foliar fertilizer provided by the present disclosure is enriched with organic matters as well as N, P 2 0 5 , K20 and Zn, and the organic matters can enhance stomatal conductance, promote leaf chlorophyll accumulation, thereby increasing the photosynthesis rate, transpiration rate and water use efficiency of the leaves; and at the same time, it is also of great significance in improving the crop's ability to resist diseases and insects as well as the yield and quality of agricultural products. The N, P 2 05 , K20 and Zn can supplement inorganic nutrients to the crop. Zn can also improve fruit quality, such as color and sweetness, and promote early ripening.
[0030] In the present disclosure, the citric acid fermentation tail solution is concentrated by evaporation to obtain the mother liquor. In the present disclosure, the temperature of the evaporation concentration is preferably 70-85°C and more preferably 75-80°C. The degree of evaporation concentration is calculated based on the volume ratio of the liquid feed before evaporation concentration to the liquid feed after evaporation concentration, and is preferably 15-25 times and more preferably 20 times. In the present disclosure, the mother liquor contains organic matters, N, P2 0 5 and K20; the content of the organic matters in the mother liquor is preferably 150-200 g/L, more preferably 155-180 g/L and most preferably 160 g/L. The content of the N in the mother liquor is preferably 40-70 g/L, more preferably 50-60 g/L and most preferably 55 g/L. The content of the P 2 0 5 in the mother liquor is preferably 1-10 g/L and more preferably 7 g/L. The content of the K2 0 in the mother liquor is 1-20 g/L and more preferably 8 g/L.
[0031] After the mother liquor is obtained, the mother liquor is mixed with the nitrogen, phosphate, potassium and zinc fertilizers uniformly in the present disclosure to obtain the citric acid organic foliar fertilizer. In the present disclosure, based on the mother liquor, the addition amount of the nitrogen fertilizer in terms of N is preferably 0-10 g/L and more preferably 5 g/L; the addition amount of the phosphorus fertilizer in terms of P2 05 is preferably 5-15 g/L and more preferably; the addition amount of the potassium fertilizer in terms of K20 is preferably 40-50 g/L and more preferably 42 g/L; the addition amount of the zinc fertilizer in terms of Zn is preferably 20-30 g/L and more preferably 25 g/L.
[0032] In the present disclosure, after the mother liquor is mixed with the nitrogen, phosphate, potassium and zinc fertilizers, due to the occurrence of complexation, chelation or physical-chemical adsorption actions, the fertilizer conversion process can be effectively regulated; the consistency between nutrient supply and crop demand can be improved; and the effect of the fertilizer can be optimized. In the present disclosure, the mixing temperature is preferably 60-75°C and more preferably 65-70°C. The mixing temperature provided by the present disclosure is conducive to the sufficient dispersion of the nitrogen, phosphate, potassium and zinc fertilizers in the mother liquor. In the present disclosure, the mixing is preferably the addition of the nitrogen, phosphate, potassium and zinc fertilizers to the mother liquor. The mixing is performed preferably with stirring. In the present disclosure, the order and rate of adding the nitrogen, phosphate, potassium and zinc fertilizers are not particularly limited, as long as the nitrogen, phosphate, potassium and zinc fertilizers can be sufficiently dispersed in the mother liquor.
[0033] The present disclosure uses the citric acid fermentation tail solution as the raw material to prepare the citric acid organic foliar fertilizer. This tail solution is rich in carbon sources, nitrogen sources and inorganic salts, which are essential nutrients for crop growth and development. Concentrating them into foliar fertilizers can reduce environmental pollution, lower agricultural production costs and increase the yield and quality of agricultural products.
[0034] In the present disclosure, the citric acid fermentation tail solution is concentrated by a low temperature evaporation process to recover nutrients, and the condensed water produced during the concentration process can also be directly reused. The tail solution is transported through a pipeline to an evaporation circulating water tank and mixed with a concentrated solution, then lifted by a circulating pump and heat exchanged to the process requirements, and then enters an evaporation module. When the volume of the concentrated solution reaches the required volume, it is short-circuited through the outlet and discharged into a temporary ton barrel or other containers. The treatment process is simple, which not only saves the post-treatment process of the tail solution, but also can turn waste into treasure, using the citric acid fermentation tail solution as the raw material of agricultural fertilizer.
[0035] The product provided by the present disclosure has rapid fertilizer efficiency, good economic benefits, wide application range, simple and convenient preparation process, and can be used as a new way for the treatment of the citric acid fermentation tail solution.
[0036] The present disclosure also provides a use of the above-mentioned citric acid organic foliar fertilizer in crop planting. In the present disclosure, the use preferably comprises the following steps:
[0037] (1 Transporting the citric acid organic foliar fertilizer to the field, spraying it on the stems and leaves after diluting by 200 times, and applying 10-15 L/mu during the whole growth period;
[0038] © Carrying out normal field management.
[0039] In the present disclosure, the citric acid organic foliar fertilizer is preferably applied by spraying. When the crop is grapes, the spraying rate is preferably 10-15 L/mu and more preferably 12 L/mu during the whole growth period. The combined application of the citric acid organic foliar fertilizer provided by the present disclosure and drip-irrigation chemical fertilizers can timely supplements the inorganic nutrients lacking in fruit trees during the critical period of crop nutrition, improves the crop's resistance to diseases and insects, enhances leaf photosynthesis rate and ultimately increases the crop's yield and quality.
[0040] The terms "comprising", "including", "having", "containing" or any other variations as used herein are intended to cover non-exclusive inclusions. For example, the composition, step, method, article or device containing the listed elements is not necessarily limited to those elements, but may include other elements that are not explicitly listed or elements intrinsic to such composition, step, method, article or device.
[0041] When an amount, concentration, or other values or parameters are represented by a range, a preferred range, or a range defined by a series of upper and lower preferred values, this should be understood as specifically disclosing all ranges formed by any pair of any upper limit or preferred value and any lower limit or preferred value, regardless of whether the ranges are independently disclosed or not. For example, when the range "1 to " is disclosed, the described range should be interpreted as including the ranges "1 to 4", "1 to 3", "1 to 2", "1 to 2 and 4 to 5" , "1 to 3 and 5", etc. When a numerical range is described herein, unless otherwise stated, the range is intended to include its end values and all integers and fractions within the range.
[0042] In addition, the technical features involved in the various embodiments of the present disclosure can be combined with each other as long as they do not conflict with each other.
[0043] Example 1
[0044] (1) The evaporation temperature was set as 80°C, and the citric acid fermentation tail solution was subjected to a low temperature evaporation and concentration treatment. By monitoring the volume of the concentrated solution, the tail solution was concentrated to 1/20 of the original volume to obtain the tail solution with a suitable concentration, i.e., the mother liquor, which contains organic matters such as starch, proteins, fermentation residues, glucose, ammonia nitrogen, fat, and the like.
[0045] (2) The following raw material components were weighed: 1 L of the concentrated citric acid mother liquor; 16 g of potassium dihydrogen phosphate; 74 g of potassium sulfate; 9 g of urea; and 125 g of zinc sulfate (ZnSO47H 20).
[0046] (3) The urea, potassium dihydrogen phosphate, potassium sulfate and zinc sulfate were added to the mother liquor with stirring, and the reaction temperature was maintained at 60-70°C to obtain a uniformly mixed feed solution.
[0047] (4) The uniformly mixed feed solution was cooled, and after passing the quality inspection, it was placed into a storage tank and sealed to obtain the citric acid organic foliar fertilizer.
[0048] The comprehensive content index of the fertilizer was determined by the foliar fertilizer standard (GBT17419-2018), and the results are as shown in Table 1.
[0049] Table 1 Quality index of the citric acid organic foliar fertilizer
Index Traits
Total nitrogen (N) 60 g/L
Total phosphorus (P 2 05 ) 15 g/L
Total potassium (K20) 50 g/L
Zinc (Zn) 25 g/L
Organic matters 160 g/L pH 4.71
Appearance Black viscous liquid, good fluidity
[0050] Example 2
[0051] Two plots of land with the same growth were selected as the experimental group and the control group. Both groups were planted with grapes. During the growth of the grapes, the experimental group was not only provided with soil fertilizers, but also provided with the citric acid organic foliar fertilizer obtained in Example 1 (i.e., the zinc-containing foliar fertilizer of the present disclosure, which was applied by spraying on the stems and leaves after diluting by 200 times, and was sprayed six times in a total amount of 14 L/mu during the whole growth period) during the second fruit expansion period. In contrast, the control group was not provided with the citric acid organic foliar fertilizer (deionized water was applied in the second fruit expansion period, and was sprayed six times in a total amount of 14 L/mu during the whole growth period), or it was provided with a zinc-free foliar fertilizer (i.e., a foliar fertilizer obtained by the same method as described in Example 1 except that no zinc was added, which was applied by spraying on the stems and leaves after diluting by 200 times, and was sprayed six times in a total amount of 14 L/mu during the whole growth period). Subsequently, normal field management was carried out until the final harvest.
[0052] The impacts of different treatments on the yield and quality of grapes are as shown in Tables 2-3.
[0053] Table 2 Impacts of different treatments on the grape yield
Zinc-free foliar Zinc-containing Treatment (spraying) Deionized water fertilizer foliar fertilizer
Single fruit weight (g/grain) 2.22 2.38 2.70
Single ear weight (g/ear) 346.40 370.00 390.60
Grape yield (kg/mu) 1714.68 1831.50 1933.47
[0054] Table 3 Impacts of different treatments on the grape fruit quality during harvest
Treatment (spraying) Deionized water Zinc-free foliar Zinc-containing
fertilizer foliar fertilizer
Soluble sugar (%) 16.14 17.48 18.47
Titratable acid(%) 0.81 0.64 0.61
Soluble solids(%) 16.16 17.94 18.55
Vitamin C (mg/kg) 16.62 16.80 17.34
Colorindex 3.91 4.42 4.99
[0055] It can be seen from Table 2 that after applying the citric acid organic foliar fertilizer provided by the present disclosure, the single fruit weight and single ear weight of grapes were increased by 21.62% and 12.76%, respectively, and the yield was increased by 12.76% compared with the group without applying the foliar fertilizer in Example 1. All were significantly higher than those of the deionized water group and the group with the zinc-free foliar fertilizer. The citric acid organic foliar fertilizer provided by the present disclosure had an extremely obvious expansion effect on the grape fruit and also significantly increased the grape yield.
[0056] It can be seen from Table 3 that when zinc was not added in Example 1 of the present disclosure, after applying the resulting foliar fertilizer, compared with the group without applying the foliar fertilizer of Example 1, its soluble sugar was increased by 8.30%, and its soluble solids were increased by 11.01%, and its Vitamin C was increased by 1.08%, and its color index was increased by 13.04% (significantly lower than the synergistic effects of Example 1, which were 14.43%, 14.79%, 4.33%, 27.62%), and its titratable acid was reduced by 20.99% (the reduction rate was significantly lower than the 24.69% of Example 1). Applying the citric acid organic foliar fertilizer provided by the present disclosure can obviously improve the quality of the grapes, and the present disclosure has good application effects on increasing the yield of the grape fruit and promoting the development of the grape fruit.
[0057] It is easy for a person skilled in the art to understand that the above are only the examples of the present disclosure and are not intended to limit the present disclosure. Any modifications, equivalent replacements and improvements made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.
Claims (5)
1. A citric acid organic foliar fertilizer, comprising 150-200 g/L of organic matters, -70 g/L of N, 10-20 g/L of P 2 05 , 40-60 g/L of K20 and 20-30 g/L of Zn, wherein the organic matters are the organic matters in the citric acid fermentation tail solution.
2. The citric acid organic foliar fertilizer according to claim 1, wherein the citric acid organic foliar fertilizer comprises 155-180 g/L of organic matters, 50-65 g/L of N, 13-17 g/L of P 2 0 5, 45-55 g/L of K20 and 23-27 g/L of Zn.
3. A method for preparing the citric acid organic foliar fertilizer according to any one of claims 1 to 2, comprising the following steps: (1) concentrating the citric acid fermentation tail solution by evaporation to obtain a mother liquor, wherein the mother liquor is 1/25-1/15 of the volume of the citric acid fermentation tail solution; (2) mixing the mother liquor in step (1) with a nitrogen fertilizer, a phosphorus fertilizer, a potassium fertilizer and a zinc fertilizer uniformly to obtain the citric acid organic foliar fertilizer; wherein the mother liquor in step (1) comprises 150-200 g/L of organic matters, 40 g/L of N, 1-10 g/L of P 2 05 and 1-20 g/L of K2 0.
4. The method for preparing the citric acid organic foliar fertilizer according to claim 3, wherein the temperature of the evaporation concentration in step (1) is 70-85°C.
5. Use of the citric acid organic foliar fertilizer according to any one of claims I to 2, wherein the citric acid organic foliar fertilizer is applied on the stems and leaves of the crop by spraying when used in crop planting; the crop is grapes; the spraying amount is -15 L/mu during the whole growth period.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111328485A (en) * | 2020-04-21 | 2020-06-26 | 福建省农业科学院茶叶研究所 | Integrative device of fertilization is loosened soil in tea garden |
| WO2023279551A1 (en) * | 2021-07-06 | 2023-01-12 | 石河子大学 | Compound microbial fertilizer, preparation method therefor and application thereof |
-
2020
- 2020-12-31 AU AU2020104406A patent/AU2020104406A4/en not_active Ceased
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111328485A (en) * | 2020-04-21 | 2020-06-26 | 福建省农业科学院茶叶研究所 | Integrative device of fertilization is loosened soil in tea garden |
| WO2023279551A1 (en) * | 2021-07-06 | 2023-01-12 | 石河子大学 | Compound microbial fertilizer, preparation method therefor and application thereof |
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