Organic fertilizer water-soluble fertilizer composition and application thereof

Abstract

The organic fertilizer water-soluble fertilizer composition comprises lichen polysaccharide, amino acid, zinc glycinate, magnesium salicylate, biological surfactant and polymer carrier. The water-soluble fertilizer can regulate physiological metabolic process of crop plants, promote cell division and elongation, accelerate growth and recovery of the plants, is beneficial to absorption and utilization of nutrients by crops, and significantly improves products of the crops.

Description

Technical Field

[0001] This invention relates to the field of fertilizers, specifically to an organic fertilizer-water soluble fertilizer composition and its application. Background Technology

[0002] Excessive use of chemical fertilizers not only hinders crop growth but also causes environmental problems. In recent years, water-soluble fertilizers have been increasingly widely used in facility agriculture due to their significant advantages such as high nutrient utilization and convenient application. However, there are many types of water-soluble fertilizers, such as high-nitrogen, high-potassium, and balanced types, each with its own focus. Different components and formulations have significant differences in their impact on crop growth, yield, and quality.

[0003] CN107324917A Biomass Graphene Micronutrient Water-Soluble Fertilizer specifically discloses a biomass graphene micronutrient water-soluble fertilizer that extracts biomass graphene oxide from plant straw, which can activate the crop's self-healing ability and realize the crop's self-repair mechanism. CN118496040A Amino Acid Chelated Water-Soluble Fertilizer and its Preparation Method use nitrogen, phosphorus, and potassium fertilizers, amino acids, sodium humate, organic matter, alginic acid, whisker regulators, and graphene modifiers. The two are used in synergistic combination to enhance the effect, and the product has a coordinated improvement effect on soil heavy metal improvement and plant quality improvement. CN118619731A A Macronutrient Water-Soluble Fertilizer that can strengthen seedlings and its Preparation Method uses urea combined with industrial monoammonium phosphate, potassium dihydrogen phosphate, caprolactam, potassium nitrate, and other raw materials. The product is rich in essential nutrients for crops such as nitrogen, phosphorus, potassium, and medium and micronutrients, and is also rich in activating enzymes. Existing water-soluble fertilizers have poor seedling strengthening effects and low crop yields, which limits their application efficiency. Based on this, the present invention further improves them.

[0004] Furthermore, weeding is a crucial agricultural management technique in crop cultivation, effectively controlling weed growth and ensuring healthy crop growth to achieve expected yields. However, farmers' over-reliance on herbicides has led to frequent herbicide damage incidents in crop fields. Without appropriate remedial measures, this can result in a series of irreversible losses.

[0005] Therefore, there is an urgent need for a water-soluble organic fertilizer, which is of great significance for regulating the physiological metabolic processes of crop plants, promoting cell division and elongation, accelerating plant growth and recovery, effectively alleviating crop pesticide damage, improving fertilizer utilization, reducing labor costs, and ensuring stable crop yields and income. Summary of the Invention

[0006] In view of the shortcomings of existing technologies, the purpose of this invention is to provide an organic fertilizer water-soluble fertilizer composition and its application, so as to solve the problems mentioned in the background art.

[0007] This invention provides an organic fertilizer water-soluble fertilizer composition, comprising lichen polysaccharide, amino acids, zinc glycine, magnesium salicylate, biosurfactant, and polymer carrier;

[0008] The lichen polysaccharide mentioned is an extract of Parmotrema tinctorum, containing ≥18% black tea extract and ≥85% β-glucan;

[0009] The amino acid in question is a mixture of L-methionine and γ-polyglutamic acid;

[0010] The biosurfactants mentioned are a class of natural surface-active substances produced by microbial fermentation of oils and sugars under suitable conditions, including sophorolipids, rhamnolipids, and lipopeptides;

[0011] The biosurfactant mentioned is sophorolipid;

[0012] The sophorolipids mentioned include lactone type and acid type, with a mass ratio of 2:1;

[0013] Furthermore, the composition comprises lichen polysaccharide, L-methionine, γ-polyglutamic acid, zinc glycine, magnesium salicylate, sophorolipid, and a polymer carrier;

[0014] An organic fertilizer water-soluble fertilizer composition, wherein the composition comprises the following components in parts by weight:

[0015] 10-30 parts of lichen polysaccharide

[0016] L-methionine 5-20 parts

[0017] 25-40 parts of γ-polyglutamic acid

[0018] 8-16 parts of zinc glycinate

[0019] 3-8 parts magnesium salicylate

[0020] Sophorolipids 5-15 parts

[0021] The polymer carrier is used to replenish the remaining amount.

[0022] The polymer carriers mainly include the following three types: organic polymers, inorganic polymers, or organic / inorganic hybrid materials;

[0023] The organic polymers mentioned include: natural polysaccharides such as chitosan, starch, and cellulose; synthetic oligomers and polymers such as polyester, polyurea, polyurethane, polyether, and block copolymers;

[0024] The inorganic polymers mentioned include: nano-silica, nano-clay, graphene oxide, nano-molecular sieves, and boron nitride, etc.

[0025] The organic / inorganic hybrid materials mentioned include: metal-organic framework materials, etc.

[0026] The polymer carrier is functionalized graphene. The specific graphene functionalization process is as follows: graphene oxide is dispersed in deionized water and ultrasonically treated; Fe3O4 and montmorillonite are added, and the mixture is reacted at 80°C for 12 hours under N2 protection; after magnetic separation, it is grafted with citric acid-chitosan (at 60°C for 6 hours and freeze-dried to obtain functionalized graphene).

[0027] An organic fertilizer water-soluble fertilizer composition, wherein the composition comprises the following components in parts by weight:

[0028] 15-30 parts of lichen polysaccharide

[0029] L-methionine 5-20 parts

[0030] 25-40 parts of γ-polyglutamic acid

[0031] 8-16 parts of zinc glycinate

[0032] 3-8 parts magnesium salicylate

[0033] Sophorolipids 5-15 parts

[0034] Functionalized graphene fills the gap;

[0035] An organic fertilizer water-soluble fertilizer composition, wherein the composition comprises the following components in parts by weight:

[0036] 18-25 parts of lichen polysaccharide

[0037] L-methionine 10-18 parts

[0038] 30-40 parts of γ-polyglutamic acid

[0039] 10-15 parts of zinc glycinate

[0040] 3-6 parts magnesium salicylate

[0041] Sophorolipids 8-12 parts

[0042] Functionalized graphene fills the gap;

[0043] An organic fertilizer water-soluble fertilizer composition, wherein the composition comprises the following components in parts by weight:

[0044] 20 parts of lichen polysaccharide

[0045] 15 portions of L-methionine

[0046] 35 parts of γ-polyglutamic acid

[0047] 13.5 parts of zinc glycinate

[0048] 4.5 parts magnesium salicylate

[0049] 10 parts of sophorolipid

[0050] Two portions of functionalized graphene;

[0051] An organic fertilizer water-soluble fertilizer composition, wherein the composition comprises the following components in parts by weight:

[0052] 20 parts of lichen polysaccharide (Parmotrema tinctorum extract)

[0053] 15 portions of L-methionine

[0054] 35 parts of γ-polyglutamic acid

[0055] Zinc glycinate (chelated Zn²⁺ content 12.0±0.5%) 13.5 parts

[0056] Magnesium salicylate (chelated Mg²⁺ content 8.5±0.3%) 4.5 parts

[0057] Sophorolipids (lactone type: acid type = 2:1) 10 parts

[0058] Two portions of functionalized graphene;

[0059] Specific preparation method:

[0060] 1) Lichen polysaccharide extraction;

[0061] 2) Purification of sophorolipids;

[0062] 3) Graphene functionalization;

[0063] 4) Lichen polysaccharide-methionine self-assembly;

[0064] 5) Construction of the sophorolipid coating layer;

[0065] 6) Functional layer load;

[0066] 7) Outer layer modification;

[0067] 8) Granulation and post-processing.

[0068] Specifically:

[0069] 1) Lichen polysaccharide extraction: Take dried Parmotrema tinctorum lichen (black tea extract ≥18%), crush it and pass it through an 80-mesh sieve; add 0.1 M NaOH solution at a material-to-liquid ratio of 1:15, extract at 80℃ for 3 h, centrifuge (8000 rpm, 15 min); adjust the pH of the supernatant to 7.0, add 3 times the volume of ethanol to precipitate, and freeze-dry to obtain lichen polysaccharide with β-glucan content ≥85%;

[0070] 2) Purification of sophorolipids: The fermentation broth was extracted with ethyl acetate, and the solvent was removed by rotary evaporation; silica gel column chromatography (petroleum ether: ethyl acetate = 3:1) was performed to collect the fraction with a 1:1 ratio of lactone type to acid type.

[0071] 3) Graphene functionalization: Graphene oxide was dispersed in deionized water (1 mg / mL) and sonicated (40 kHz, 1 h); Fe3O4 and montmorillonite (mass ratio 1:0.7) were added and reacted at 80 °C for 12 h under N2 protection; after magnetic separation, it was grafted with citric acid-chitosan (molar ratio 1:0.4) at 60 °C for 6 h and freeze-dried to obtain functionalized graphene;

[0072] 4) Lichen polysaccharide-methionine self-assembly: 20 parts of lichen polysaccharide and 15 parts of L-methionine were dissolved in 0.1 M phosphate buffer (pH 6.8) to a final concentration of 5% (w / v); ultrasonic treatment was carried out at 55℃ (40 kHz, 300 W, 30 min) to form micelles with a particle size of 150±20 nm; pre-frozen at -45℃ for 4 h, and freeze-dried at 0.1 Pa for 24 h to obtain porous microspheres (moisture content ≤3%).

[0073] 5) Construction of sophorolipid coating: 10 parts of sophorolipid were dissolved in anhydrous ethanol (20% w / v), and 0.1% Tween-80 was added to aid dissolution; the core microspheres were placed in a fluidized bed (inlet air temperature 60±2℃, air velocity 1.5 m³ / min); spray rate 5 mL / min, atomization pressure 0.15 MPa, and coating was carried out until the weight gain was 10±0.5%.

[0074] 6) Functional layer loading (graphene-trace element composite): 2 parts of functionalized graphene were dispersed in deionized water (5 mg / mL), and 13.5 parts of zinc glycine and 4.5 parts of magnesium salicylate were added; the mixture was stirred at 45℃ for 6 h, centrifuged (10000 rpm, 10 min) to collect the precipitate, and dried at 60℃; the loaded graphene was sprayed onto the surface of the coated microspheres using supercritical CO2 assisted spraying (pressure 150 kPa, 120℃).

[0075] 7) Outer layer modification (pH-responsive shell): 15 parts of L-methionine were mixed with zinc glycine (Zn²⁺ 12%) and magnesium salicylate (Mg²⁺ 8.5%) at a mass ratio of 4:1; the complex was dissolved in 70% ethanol (10% w / v), the voltage was 12 kV, the receiving distance was 15 cm, and the deposition rate was ≥85%.

[0076] 8) Granulation and post-treatment: Mix the above granules with 35 parts of γ-polyglutamic acid and knead until "it can be formed into a ball when squeezed, but can be easily dispersed when touched"; extrude granulation (pore size 3 mm), with a particle length of 3-5 mm; fluidized bed drying (40±2℃, humidity 15%), with a moisture content ≤5%; air pressure treatment (150 kPa, 10 min) to make the compressive strength of the particles ≥10 MPa.

[0077] An application of an organic fertilizer water-soluble fertilizer composition for improving crop stress resistance;

[0078] The crops mentioned are selected from one or more of the following: grains, vegetables, fruits, nuts, sugar crops, oil crops, beverage crops, seasoning crops, feed crops, medicinal plants, and other crops.

[0079] The crops mentioned are corn, rice, and peanuts;

[0080] The quality of the crop mentioned refers to one or more of the following: vitamin C content, soluble protein content, amino acid content, crude protein content, soluble sugar content, organic acid content, starch content, and chlorophyll content.

[0081] The application method is selected from one or more of the following: spraying, dusting, seed dressing, soil irrigation, granulation, fumigation, poison bait, and injection.

[0082] Beneficial effects:

[0083] 1) It can regulate the physiological metabolic processes of crop plants, promote cell division and elongation, accelerate plant growth and recovery, and effectively alleviate crop pesticide damage;

[0084] 2) By adding sophorolipids, the surface tension of the composition can be reduced, the ionic strength between liquid molecules can be increased, and the dispersibility of nanoparticles in the aqueous phase can be improved, thereby enhancing wettability and permeability;

[0085] 3) This water-soluble fertilizer composition has high stability and a wide range of applications, which can rapidly increase the yield of agricultural products by 10-20%. Specific Implementation

[0086] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to specific examples. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Specific Implementation

[0087] Example 1

[0088] An organic fertilizer water-soluble fertilizer composition, wherein the composition comprises the following components in parts by weight:

[0089] 20 parts of lichen polysaccharide (Parmotrema tinctorum extract)

[0090] 15 portions of L-methionine

[0091] 35 parts of γ-polyglutamic acid

[0092] 13.5 parts of zinc glycinate

[0093] 4.5 parts magnesium salicylate

[0094] Sophorolipids (lactone type: acid type = 2:1) 10 parts

[0095] Two portions of functionalized graphene;

[0096] Example 2

[0097] An organic fertilizer water-soluble fertilizer composition, wherein the composition comprises the following components in parts by weight:

[0098] 20 parts of lichen polysaccharide (Parmotrema tinctorum extract)

[0099] 15 portions of L-methionine

[0100] 35 parts of γ-polyglutamic acid

[0101] 13.5 parts of zinc glycinate

[0102] 4.5 parts magnesium salicylate

[0103] Sophorolipids (lactone type: acid type = 1:1) 10 parts

[0104] Two portions of functionalized graphene;

[0105] Example 3

[0106] An organic fertilizer water-soluble fertilizer composition, wherein the composition comprises the following components in parts by weight:

[0107] 20 parts of lichen polysaccharide (Parmotrema tinctorum extract)

[0108] 15 portions of L-methionine

[0109] 35 parts of γ-polyglutamic acid

[0110] 13.5 parts of zinc glycinate

[0111] 4.5 parts magnesium salicylate

[0112] Sophorolipids (lactone type: acid type = 2:3) 10 parts

[0113] Two portions of functionalized graphene;

[0114] Compare with Example 1

[0115] An organic fertilizer water-soluble fertilizer composition, wherein the composition comprises the following components in parts by weight:

[0116] 20 parts carboxymethyl cellulose

[0117] 15 portions of L-methionine

[0118] 35 parts of γ-polyglutamic acid

[0119] 13.5 parts of zinc glycinate

[0120] 4.5 parts magnesium salicylate

[0121] Sophorolipids (lactone type: acid type = 2:1) 10 parts

[0122] Two portions of functionalized graphene;

[0123] Compare with Example 2

[0124] An organic fertilizer water-soluble fertilizer composition, wherein the composition comprises the following components in parts by weight:

[0125] 20 parts of lichen polysaccharide (Parmotrema tinctorum extract)

[0126] 15 portions of L-methionine

[0127] 35 parts of γ-polyglutamic acid

[0128] 13.5 parts of zinc glycinate

[0129] 4.5 parts magnesium salicylate

[0130] Sophorolipids (lactone type: acid type = 3:1) 10 parts

[0131] Two portions of functionalized graphene;

[0132] Compare with Example 3

[0133] An organic fertilizer water-soluble fertilizer composition, wherein the composition comprises the following components in parts by weight:

[0134] 20 parts of lichen polysaccharide (Parmotrema tinctorum extract)

[0135] 15 portions of L-methionine

[0136] 35 parts of γ-polyglutamic acid

[0137] 13.5 parts of zinc glycinate

[0138] 4.5 parts magnesium salicylate

[0139] Sophorolipids (lactone type: acid type = 2:1) 10 parts

[0140] Two parts of multilayer graphene;

[0141] Compare with Example 4

[0142] An organic fertilizer water-soluble fertilizer composition, wherein the composition comprises the following components in parts by weight:

[0143] 20 parts of lichen polysaccharide (Parmotrema tinctorum extract)

[0144] 15 parts glycine

[0145] 35 parts of γ-polyglutamic acid

[0146] 13.5 parts of zinc glycinate

[0147] 4.5 parts magnesium salicylate

[0148] Sophorolipids (lactone type: acid type = 2:1) 10 parts

[0149] Two portions of functionalized graphene;

[0150] Compare with Example 5

[0151] An organic fertilizer water-soluble fertilizer composition, wherein the composition comprises the following components in parts by weight:

[0152] 8 parts of lichen polysaccharide (Parmotrema tinctorum extract)

[0153] 15 portions of L-methionine

[0154] 35 parts of γ-polyglutamic acid

[0155] 13.5 parts of zinc glycinate

[0156] 4.5 parts magnesium salicylate

[0157] Sophorolipids (lactone type: acid type = 2:1) 10 parts

[0158] 2 portions of functionalized graphene

[0159] 12 parts deionized water;

[0160] Compare with Example 6

[0161] An organic fertilizer water-soluble fertilizer composition, wherein the composition comprises the following components in parts by weight:

[0162] 28 parts of lichen polysaccharide (Parmotrema tinctorum extract)

[0163] 12 portions of L-methionine

[0164] 30 parts of γ-polyglutamic acid

[0165] 13.5 parts of zinc glycinate

[0166] 4.5 parts magnesium salicylate

[0167] Sophorolipids (lactone type: acid type = 2:1) 10 parts

[0168] Two portions of functionalized graphene; Specific Implementation

[0169] 1) Performance test indicators:

[0170] Reference test method:

[0171] GB / T 17767.3-2010 "Determination of Organic-Inorganic Compound Fertilizers" Part 3: Total Potassium Content;

[0172] Pb²⁺ adsorption rate determination method GB / T 34764-2017 "Determination of lead, cadmium, chromium, arsenic and mercury in fertilizers";

[0173] Methods for determining SOD enzyme activity enhancement: GB / T 34799-2017 "Determination of superoxide dismutase (SOD) activity in plants" and ultraviolet spectrophotometry (NBT photochemical reduction method).

[0174]

[0175] 2) Correlation between leaf contact angle and nutrient absorption rate

[0176] Reference test method:

[0177] Leaf contact angle determination: ISO 19403-2017 "Surface free energy determination - contact angle method" and ASTM D7334-08 (surface wettability assessment);

[0178] Zinc absorption rate determination method: NY / T 3087-2017 "Method for determination of nutrient absorption efficiency of foliar fertilizers".

[0179]

[0180] 3) Measurement of photosynthetic rate and stomatal conductance

[0181] Reference test method:

[0182] Photosynthetic rate (Pn): LI-COR 6400XT Photosynthesis Analyzer Operation Manual (International Standard) and GB / T 29371-2012 "Methods for Determination of Plant Photosynthesis";

[0183] Stomatal conductance (Gs): ISO 20044:2022 (Stomatal conductance measurement standard) and Guidelines for Laboratory Practice in Plant Physiology (Science Press)

[0184] Field efficacy trials

[0185] Crop target: Maize (Zhengdan 958)

[0186] Test location: Pingling Village, Qingyuan District, Baoding City, Hebei Province

[0187] Apply 40 g / L nicosulfuron dispersible oil suspension at the corn tasseling stage, with an active ingredient dosage of 300 ml / hm². 2 Used to control annual weeds in cornfields;

[0188] One day after application, observation revealed that the base of the corn's whorl leaves turned pale green, and irregular pale green spots appeared on the leaves. Three days after application, some leaves were found to have curled into a tubular shape, and the leaf edges were wrinkled. Preliminary assessment indicated that the corn was suffering from damage.

[0189] Experimental treatment:

[0190] Accurately describe the symptoms of herbicide damage to corn (growth inhibition, chlorosis, necrotic spots, deformities, etc.), and classify the herbicide damage according to the herbicide damage grading method:

[0191] Level 1: The corn is growing normally and shows no signs of damage.

[0192] Level 2: Slight herbicide damage to corn, with damage less than 10%.

[0193] Level 3: Moderate pesticide damage to corn; it will recover and will not affect yield.

[0194] Level 4: Severe pesticide damage to corn, difficult to recover from, resulting in reduced yield;

[0195] Level 5: Severe pesticide damage to corn, irreversible, resulting in significant yield reduction or complete crop failure.

[0196] Simultaneously observe the interaction between pesticide damage and adverse factors (cultivation methods, lodging, pest and disease infestation, damage caused by prolonged high temperature or freezing, etc.).

[0197] The standards for measuring maize yield increase are NY / T 3082-2017 "Technical Regulations for Field Trials of Fertilizer Effects" and GB / T5520-2011 "Grain and Oil Inspection: Determination of Grain Seed Yield".

[0198] Safety investigation: Observe the changes in pesticide damage and the time required for complete recovery.

[0199] Yield survey: Yields were measured in each treatment area at harvest time.

[0200]

[0201] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that can be understood by those skilled in the art. For those skilled in the art, several improvements and modifications can be made without departing from the spirit and scope of the invention, and these improvements and modifications should also be considered within the scope of protection of the invention.

Claims

1. An organic fertilizer water-soluble fertilizer composition, comprising lichen polysaccharide, amino acids, zinc glycine, magnesium salicylate, biosurfactant, and polymer carrier.

2. The composition according to claim 1, characterized in that, The lichen polysaccharide is Parmotrematinctorum extract, containing ≥18% black tea extract and ≥85% β-glucan.

3. The composition according to claim 1, characterized in that, The amino acid in question is a mixture of L-methionine and γ-polyglutamic acid.

4. The composition according to claim 1, characterized in that, The biosurfactants mentioned include sophorolipids, rhamnolipids, and lipopeptides; Preferably, the biosurfactant is sophorolipid.

5. The composition according to claim 4, characterized in that, The sophorolipids mentioned include lactone type and acid type, with a mass ratio of 2:

1.

6. The composition according to any one of claims 1 to 5, characterized in that, The composition includes lichen polysaccharide, L-methionine, γ-polyglutamic acid, zinc glycine, magnesium salicylate, sophorolipid, and a polymer carrier; The composition comprises the following components in parts by weight: 10-30 parts of lichen polysaccharide L-methionine 5-20 parts, 25-40 parts of γ-polyglutamic acid 8-16 parts of zinc glycinate 3-8 parts magnesium salicylate Sophorolipids 5-15 parts The polymer carrier is used to make up the remaining amount.

7. The composition according to claim 6, characterized in that, The polymer carrier is functionalized graphene.

8. An application of an organic fertilizer water-soluble fertilizer composition for improving crop stress resistance.

9. The application according to claim 8, characterized in that, The crops mentioned are selected from one or more of the following: grains, vegetables, fruits, nuts, sugar crops, oil crops, beverage crops, seasoning crops, feed crops, medicinal plants, and other crops. The crops mentioned are corn, rice, and peanuts.

10. The application according to claim 8, characterized in that, The specific application method of the composition is selected from one or more of the following: spraying, dusting, seed dressing, soil irrigation, granulation, fumigation, poison bait, and injection.

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