Stress-resistant seedling-lifting special fertilizer and production method thereof

Abstract

The invention provides a stress-resistant seedling-raising special fertilizer. The stress-resistant seedling-raising special fertilizer is prepared from the following components in parts by weight: 345 to 390 parts of urea, 190 to 310 parts of ammonium nitrate phosphorus, 90 to 115 parts of monoammonium phosphate, 160 to 185 parts of potassium sulfate, 18 to 33 parts of mineral source potassium fulvate, 16 to 27.5 parts of trace elements, 2.5 to 7 parts of amino acid polypeptide, 42 to 68 parts of anhydrous magnesium sulfate, 0.1 to 0.3 part of plant endophyte metabolite and 0.2 to 0.4 part of stress-resistant supplement. The invention also provides a production method of the stress-resistant seedling-lifting special fertilizer. The plant endophyte metabolite is added to enhance the stress resistance of plants. Meanwhile, the alginate oligosaccharide is matched, so that the alginate oligosaccharide and the alginate oligosaccharide cooperate with each other, and under various stress conditions (water stress, salt stress, osmotic stress and pH change), the metabolism of the plant is promoted, and the adversity stress resistance of the plant is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of biological fertilizers, in particular to a special fertilizer for stress resistance and seedling enhancement and a production method thereof. Background Art

[0002] Agricultural production faces the challenge of disasters triggered by multiple meteorological factors, such as dry and hot winds, freezing waterlogging, and rotting rain. These disasters, resulting from the interaction of multiple meteorological conditions, pose a serious threat to agricultural production and affect crop growth and yield. Experts have analyzed that extreme weather events are becoming increasingly frequent. In recent years, in particular, there have been many extreme weather events, such as droughts, heavy rains, low temperatures, and high temperatures. These climate changes have significantly impacted crop production, leading to an increase in the incidence of crop diseases and pests. Some previously minor pests and diseases have become major, and localized pests and diseases have spread to large-scale outbreaks.

[0003] To address agrometeorological disasters, scholars have proposed measures to address these challenges: establishing and improving meteorological monitoring networks and strengthening meteorological monitoring and early warning systems; promoting disaster-resistant varieties and cultivation techniques, while also adopting appropriate cultivation methods; improving the agricultural insurance system; strengthening farmland infrastructure to enhance farmland's resilience to meteorological disasters; and, in terms of fertilization, strengthening monitoring and analysis of soil nutrient status and formulating scientific fertilization plans based on these results to improve soil fertility and nutrient content. While these measures have been effective, reducing the area affected by minor disasters due to the increasing incidence of extreme weather and climate events under the impact of climate change, their resilience to major disasters remains insufficient. Therefore, researching new agricultural response measures is crucial for ensuring the stability and sustainability of agricultural production.

[0004] As a seaweed extract, algal oligosaccharides not only improve soil quality but also promote crop growth, increase crop yields, and enhance crop resistance to adverse environmental conditions. They hold broad application prospects in the context of reducing chemical fertilizer use and increasing efficiency. However, current fertilizers using algal oligosaccharides as their primary ingredient are too limited in effectiveness and lack synergy with other ingredients, resulting in limited stress resistance. Therefore, further improvement is needed. Summary of the Invention

[0005] In response to the shortcomings of the existing technology, the present invention provides a special fertilizer for stress resistance and seedling promotion and a production method thereof, which solves the problem in the existing technology that the fertilizer with brown algae oligosaccharide as the main ingredient is too single in effect and lacks synergistic effect with other ingredients, resulting in insufficient stress resistance.

[0006] In a first aspect, the present invention proposes a special fertilizer for stress resistance and seedling promotion, comprising, calculated by weight: 345-390 parts of urea, 190-310 parts of ammonium nitrate phosphate, 90-115 parts of monoammonium phosphate, 160-185 parts of potassium sulfate, 18-33 parts of mineral potassium humate, 16-27.5 parts of trace elements, 2.5-7 parts of amino acid polypeptides, 42-68 parts of anhydrous magnesium sulfate, 0.1-0.3 parts of plant endophyte metabolites, and 0.2-0.4 parts of stress resistance supplements.

[0007] Preferably, the trace elements include a mixture of zinc, boron, iron and molybdenum in EDTA chelated state, wherein the weight ratio of each component is 2:1:1:1.

[0008] Preferably, the amino acid polypeptide is a peptide chain fragment obtained by biological fermentation of proteins from animal sources such as cow's milk, pig blood, animal bones, hoof horns, hair, feathers, etc.

[0009] Preferably, the plant endophyte metabolite is a metabolite extracted from endophytic fungal mycelium isolated and purified from wild seabuckthorn plants.

[0010] Preferably, the stress-resistant supplement is brown algae oligosaccharide extracted from deep-sea Ascophyllum nodosum.

[0011] Preferably, the polymer of long-chain molecules in the brown algae oligosaccharide is 3-7.

[0012] In a second aspect, the present invention further provides a method for producing a special fertilizer for stress resistance and seedling enhancement, comprising the following steps:

[0013] S1, weighing ammonium nitrate phosphate, monoammonium phosphate, and potassium sulfate raw materials in proportion, and then transporting them to a crusher via a conveyor belt for crushing to form a primary mixture;

[0014] S2. Weighing trace elements, anhydrous magnesium sulfate, mineral-derived potassium fulvic acid, and amino acid polypeptides in proportion and placing them into a reaction kettle, heating and stirring to form a stable complex of amino acid polypeptides and trace elements;

[0015] S3, processing urea into a molten state, then mixing the primary mixture obtained in step S1 and the complex prepared in step S2 with the molten urea to form a co-melt, which is then introduced into a granulator. Under the action of the rotary spraying of the granulator, molten granules are formed and discharged from the granulator. The discharged molten granules are cooled to form granules;

[0016] S4. Evenly mix the plant endophyte metabolites, brown algae oligosaccharides and coating oil, and evenly coat the mixture on the surface of the particles prepared in step S3 through a coating machine. The mixture is then sent to a packaging system for packaging to obtain the product of the present invention.

[0017] Furthermore, during the heating and stirring process in step S2, the stirring speed is 25-35 rpm, the stirring temperature is 50° C.-70° C., and the stirring time is 30-40 minutes.

[0018] Furthermore, the particles formed in step S3 need to be sieved to remove fine powder less than 1 mm and large particles larger than 4 mm, thereby obtaining uniform particles with a diameter of 1 mm to 4 mm.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The present invention is a new type of high-nitrogen fertilizer product, and contains a large amount of urea nitrogen, ammonia nitrogen, and nitrate nitrogen. It can be used to replace urea, has strong fast-acting properties, and has a long-lasting fertilizer effect. It can act on all crops and has a wide range of uses. It can be used as a topdressing fertilizer or a basal fertilizer. The product has good water solubility and can be used for sprinkler irrigation.

[0021] 2. The nutrients of the present invention are comprehensive, including nitrogen, phosphorus, potassium, magnesium, zinc, boron, iron, molybdenum, fulvic acid, amino acids and other nutritional costs, which can effectively balance the needs of crops for various elements;

[0022] 3. The present invention adds plant endophyte metabolites, which can ensure the normal growth and development of plants by regulating plant photosynthesis, hormone concentration, osmotic regulating substance content, antioxidant enzyme activity and related gene expression, thereby enhancing plant stress resistance. At the same time, it is matched with brown algae oligosaccharides, which play the role of signal molecules in plant stress resistance. Brown algae oligosaccharides will form a protective film, effectively protecting protein molecules from denaturation and inactivation, thereby maintaining the life process and biological characteristics of living organisms, and thus showing extraordinary stress resistance to harsh external environments. Brown algae oligosaccharides can protect plant endophyte metabolites and enable them to function normally in harsh environments, so that the two can cooperate with each other, promote plant metabolism under various stress conditions (water stress, salt stress, osmotic stress, pH changes), increase the activity of antioxidant enzymes in plants, maintain the stability of pH and the balance of anions / cations in plants, and enable plants to adapt to osmotic stress, thereby improving the ability of plants to resist adverse stress;

[0023] 4. The present invention contains rich amino acid polypeptides and hemoglobin, which can be directly absorbed by plants, effectively promoting photosynthesis and respiration in plants, improving metabolic conversion efficiency, increasing the accumulation of starch, sugars and other carbon oxides in the body, ripening early, promoting sweetening and coloring of fruits, making fruits plump and uniform in size, and improving quality. DETAILED DESCRIPTION

[0024] The technical solution of the present invention is further described below with reference to the embodiments.

[0025] Example 1:

[0026] A special fertilizer for plant endophyte metabolites for stress resistance and seedling promotion, comprising raw materials in parts by weight: 360 parts of urea, 270 parts of ammonium nitrate phosphate, 100 parts of monoammonium phosphate, 170 parts of potassium sulfate, 20 parts of mineral fulvic acid, 24.5 parts of trace elements, 5 parts of amino acid polypeptides, 50 parts of anhydrous magnesium sulfate, 0.2 parts of sea buckthorn endophyte metabolites, and 0.3 parts of brown algae oligosaccharides.

[0027] A production method for a special fertilizer for plant endophyte metabolites for stress resistance and seedling promotion is characterized by the specific steps of: weighing each component according to the mass ratio; adding trace elements, anhydrous magnesium sulfate, mineral-source potassium fulvate and amino acid polypeptides into a reactor, heating and stirring at a stirring speed of 30 rpm, a stirring temperature of 50°C to 70°C, and a stirring time of 30 minutes to form a stable complex of amino acid polypeptides and trace elements; simultaneously, transporting ammonium nitrate phosphate, monoammonium phosphate and potassium sulfate to a crusher via a conveyor belt for crushing to form a primary mixture, which is then introduced into a mixing tank of a granulator together with the amino acid polypeptide and trace element complex and urea processed into a molten state in an external section to mix to form a eutectic; after granulation by the granulator, cooling, drying and sieving, and then coating the mixture of sea buckthorn endophyte metabolites, brown algae oligosaccharides and coating oil by a coating machine to obtain a fertilizer product.

[0028] Example 2:

[0029] A special fertilizer for plant endophyte metabolites for stress resistance and seedling promotion, whose raw materials, calculated by weight, include: 390 parts of urea, 190 parts of ammonium nitrate phosphate, 115 parts of monoammonium phosphate, 185 parts of potassium sulfate, 33 parts of mineral fulvic acid, 16 parts of trace elements, 2.5 parts of amino acid polypeptides, 68 parts of anhydrous magnesium sulfate, 0.1 part of sea buckthorn endophyte metabolites, and 0.4 part of brown algae oligosaccharides.

[0030] A production method for a special fertilizer for plant endophyte metabolites for stress resistance and seedling promotion is characterized by the specific steps of: weighing each component according to the mass ratio; adding trace elements, anhydrous magnesium sulfate, mineral-source potassium fulvate and amino acid polypeptides into a reactor, heating and stirring at a stirring speed of 30 rpm, a stirring temperature of 50°C to 70°C, and a stirring time of 30 minutes to form a stable complex of amino acid polypeptides and trace elements; simultaneously, transporting ammonium nitrate phosphate, monoammonium phosphate and potassium sulfate to a crusher via a conveyor belt for crushing to form a primary mixture, which is then introduced into a mixing tank of a granulator together with the amino acid polypeptide and trace element complex and urea processed into a molten state in an external section to mix to form a eutectic; after granulation by the granulator, cooling, drying and sieving, and then coating the mixture of sea buckthorn endophyte metabolites, brown algae oligosaccharides and coating oil by a coating machine to obtain a fertilizer product.

[0031] Example 3:

[0032] A special fertilizer for plant endophyte metabolites for stress resistance and seedling promotion, whose raw materials, calculated by weight, include: 345 parts of urea, 310 parts of ammonium nitrate phosphate, 90 parts of monoammonium phosphate, 160 parts of potassium sulfate, 18 parts of mineral fulvic acid, 27.5 parts of trace elements, 7 parts of amino acid polypeptides, 42 parts of anhydrous magnesium sulfate, 0.3 parts of sea buckthorn endophyte metabolites, and 0.2 parts of brown algae oligosaccharides.

[0033] A production method for a special fertilizer for plant endophyte metabolites for stress resistance and seedling promotion is characterized by the specific steps of: weighing each component according to the mass ratio; adding trace elements, anhydrous magnesium sulfate, mineral-source potassium fulvate and amino acid polypeptides into a reactor, heating and stirring at a stirring speed of 30 rpm, a stirring temperature of 50°C to 70°C, and a stirring time of 30 minutes to form a stable complex of amino acid polypeptides and trace elements; simultaneously, transporting ammonium nitrate phosphate, monoammonium phosphate and potassium sulfate to a crusher via a conveyor belt for crushing to form a primary mixture, which is then introduced into a mixing tank of a granulator together with the amino acid polypeptide and trace element complex and urea processed into a molten state in an external section to mix to form a eutectic; after granulation by the granulator, cooling, drying and sieving, and then coating the mixture of sea buckthorn endophyte metabolites, brown algae oligosaccharides and coating oil by a coating machine to obtain a fertilizer product.

[0034] Comparative Example 1:

[0035] The rest of this example is the same as Example 1, except that no plant endophyte metabolites are added to the ingredients.

[0036] Comparative Example 2:

[0037] The rest of this embodiment is the same as that of Example 1, except that plant endophyte metabolites and brown algae oligosaccharides are not added to the ingredients. Example:

[0038] The fertilizer products prepared in Examples 1-3 and Comparative Examples 1-2 were experimentally compared. Tomatoes were sown, raised, and planted in a greenhouse. When the tomatoes grew to 3 leaves and 1 heart, the above fertilizer was applied as base fertilizer at a rate of 40 kg / mu.

[0039] After 3 days of acclimatization at room temperature, the seedlings were placed in an intelligent incubator and treated at a low temperature of 4°C. The experimental data are shown in Table 1:

[0040]

[0041] Table 1

[0042] As can be seen from Table 1, the fertilizer product provided by the present invention has a strong antioxidant capacity, which can significantly reduce the malondialdehyde (MDA) content of plant leaves in adverse environments, reduce damage, and simultaneously increase the activity of plant antioxidant enzymes, so that crops can improve their resistance to abiotic stress (cold, drought, waterlogging, heat, pesticide and fertilizer damage, etc.). The secondary metabolites of seabuckthorn endophytes can effectively stimulate the growth and development of host plants, making the amino acid and protein content inside the plants higher, that is, maintaining the concentration of brown algae oligosaccharides, prompting brown algae oligosaccharides to produce better effects, and playing a synergistic effect. At the same time, it can also promote the improvement of the plant's ability to resist abiotic stress and biotic stress. In addition, the secondary metabolites of seabuckthorn endophytes also have antibacterial, antitumor, antiviral, antioxidant, insecticide, immunosuppressive and hypoglycemic activities, and are more environmentally friendly.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A special fertilizer for stress resistance and seedling promotion, characterized in that: The invention comprises the following components calculated by weight: 345-390 parts of urea, 190-310 parts of ammonium nitrate phosphate, 90-115 parts of monoammonium phosphate, 160-185 parts of potassium sulfate, 18-33 parts of mineral potassium fulvic acid, 16-27.5 parts of trace elements, 2.5-7 parts of amino acid polypeptides, 42-68 parts of anhydrous magnesium sulfate, 0.1-0.3 parts of plant endophyte metabolites, and 0.2-0.4 parts of stress resistance supplement.

2. A special fertilizer for stress resistance and seedling promotion as claimed in claim 1, characterized in that: The trace elements include a mixture of zinc, boron, iron and molybdenum in an EDTA chelated state, wherein the weight ratio of each component is 2:1:1:

1.

3. A special fertilizer for stress resistance and seedling promotion as claimed in claim 1, characterized in that: The amino acid polypeptides are peptide chain fragments obtained by biological fermentation of proteins from animal sources such as cow's milk, pig's blood, animal bones, hoof horns, hair, feathers, etc.

4. A special fertilizer for stress resistance and seedling promotion as claimed in claim 1, characterized in that: The plant endophyte metabolite is a metabolite extracted from endophytic fungus mycelium separated and purified from wild seabuckthorn plants.

5. A special fertilizer for stress resistance and seedling promotion as claimed in claim 1, characterized in that: The stress-resistant supplement is brown algae oligosaccharide extracted from deep-sea Ascophyllum nodosum.

6. A special fertilizer for stress resistance and seedling promotion as claimed in claim 5, characterized in that: The polymer of long chain molecules in the brown algae oligosaccharide is 3-7.

7. A method for producing the special fertilizer for stress resistance and seedling promotion as claimed in claim 1, characterized in that: The steps include: S1, weighing ammonium nitrate phosphate, monoammonium phosphate, and potassium sulfate raw materials in proportion, and then transporting them to a crusher via a conveyor belt for crushing to form a primary mixture; S2. Weighing trace elements, anhydrous magnesium sulfate, mineral-derived potassium fulvic acid, and amino acid polypeptides in proportion and placing them into a reaction kettle, heating and stirring to form a stable complex of amino acid polypeptides and trace elements; S3, processing urea into a molten state, then mixing the primary mixture obtained in step S1 and the complex prepared in step S2 with the molten urea to form a co-melt, which is then introduced into a granulator. Under the action of the rotary spraying of the granulator, molten granules are formed and discharged from the granulator. The discharged molten granules are cooled to form granules; S4. Evenly mix the plant endophyte metabolites, brown algae oligosaccharides and coating oil, and evenly coat the mixture on the surface of the particles prepared in step S3 through a coating machine. The mixture is then sent to a packaging system for packaging to obtain the product of the present invention.

8. The production method of a special fertilizer for stress resistance and seedling promotion as claimed in claim 6, wherein: During the heating and stirring process in step S2, the stirring speed is 25-35 rpm, the stirring temperature is 50° C.-70° C., and the stirring time is 30-40 minutes.

9. The production method of a special fertilizer for stress resistance and seedling promotion as claimed in claim 6, wherein: The particles formed in step S3 need to be sieved to remove fine powder less than 1 mm and large particles larger than 4 mm, thereby obtaining uniform particles with a diameter of 1 mm to 4 mm.

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