Search

CN-121974747-A - Fertilizer synergist with aspartic acid, brown alginate oligosaccharides, mannooligosaccharides and magnetic polysaccharide as carrier and preparation method thereof

CN121974747ACN 121974747 ACN121974747 ACN 121974747ACN-121974747-A

Abstract

The invention relates to a fertilizer synergist and a preparation method thereof, in particular to a fertilizer synergist based on natural components of modified aspartic acid, brown alginate oligosaccharides, mannooligosaccharides and magnetic polysaccharide and taking a fertilizer as a carrier. The fertilizer synergist remarkably improves the utilization efficiency, slow release property and nutrient absorption capacity of crops of the fertilizer through the innovative modification of the modified aspartic acid and the synergistic effect of natural polysaccharide. Compared with the traditional fertilizer synergist, the synergist provided by the invention can prolong the release time of nutrients, reduce fertilizer loss, improve crop yield, and has better environmental friendliness, so that pollution to soil and water possibly caused in the fertilizer application process is reduced. The fertilizer synergist has remarkable advantages in the aspects of improving the fertilizer utilization rate, the crop growth and the soil environmental protection. The fertilizer synergist provides a high-efficiency, environment-friendly and sustainable technical solution for agricultural production.

Inventors

  • CHEN HUI
  • Ni Yuanhao
  • Kan Yunan

Assignees

  • 港美生物科技(吉林)有限公司

Dates

Publication Date
20260505
Application Date
20260202

Claims (9)

  1. 1. The fertilizer synergist is characterized by comprising, by weight, 3-6 parts of modified aspartic acid, 1-3 parts of mannooligosaccharide, 2-4 parts of brown alginate oligosaccharide, 3-5 parts of magnetic polysaccharide, 1-2 parts of 2, 5-dihydroxyterephthalic acid dimethylamide, 10-50 parts of a fertilizer carrier, 0.5-2 parts of a surfactant and 0.1-0.5 part of an antioxidant, wherein the modified aspartic acid is prepared from the following raw materials.
  2. 2. The fertilizer synergist taking fertilizer as a carrier for the brown alginate-oligosaccharide, the mannooligosaccharide and the magnetic polysaccharide according to claim 1 is characterized by comprising, by weight, 5-10 parts of aspartic acid, 0.5-1.5 parts of aminosilane, 0.5-1 part of epoxy resin, 0.2-0.8 part of plasticizer, 0.1-0.5 part of cross-linking agent, 50-100 parts of deionized water, wherein the plasticizer is di (2-ethylhexyl) phthalate, and the cross-linking agent is diisocyanate.
  3. 3. The fertilizer synergist using fertilizer as carrier according to claim 1 or 2, wherein the preparation method of the modified aspartic acid comprises the following steps: (1) Dissolving the aspartic acid in deionized water, and stirring until the aspartic acid is completely dissolved to obtain an aspartic acid solution; (2) Sequentially adding aminosilane and epoxy resin into the aspartic acid solution, and stirring for reaction; (3) Continuously adding a plasticizer and a crosslinking agent, and continuously stirring to react until the modification reaction is complete, so as to form a modified aspartic acid solution; (4) Evaporating the obtained modified aspartic acid solution to remove the solvent, thereby obtaining the solid modified aspartic acid.
  4. 4. The fertilizer synergist using the fertilizer as the carrier according to claim 3, wherein the stirring reaction condition in the step (2) is that the temperature is 25-50 ℃, the stirring speed is 100-300 rpm, and the reaction time is 30 minutes-2 hours.
  5. 5. The fertilizer synergist using the fertilizer as the carrier according to claim 3, wherein the continuous stirring reaction condition in the step (3) is that the temperature is 30-60 ℃, the stirring speed is 150-400 rpm, and the reaction time is 1-3 hours.
  6. 6. The fertilizer synergist using fertilizer as carrier according to claim 3, wherein the evaporating conditions in the step (4) are 40-80 ℃, the vacuum degree is 0.1-0.5 mpa, and the evaporating time is 2-6 hours.
  7. 7. The fertilizer synergist taking fertilizer as a carrier and comprising alginic acid, brown alginate oligosaccharides, mannooligosaccharides and magnetic polysaccharide according to claim 1 is characterized in that the fertilizer carrier is formed by mixing bentonite and polyvinyl alcohol according to a mass ratio of 1:1-3:1, the surfactant is formed by mixing fatty alcohol polyoxyethylene ether and aminosilane according to a mass ratio of 2:1-4:1, and the antioxidant is formed by mixing butyl hydroxy anisole and ascorbic acid according to a mass ratio of 1:1-2:1.
  8. 8. The method for preparing fertilizer synergist by taking fertilizer as carrier from aspartic acid, brown algae oligosaccharide, mannooligosaccharide and magnetic polysaccharide, wherein the fertilizer synergist by taking fertilizer as carrier from aspartic acid, brown algae oligosaccharide, mannooligosaccharide and magnetic polysaccharide is as claimed in any one of claims 1-6, and is characterized by comprising the following steps: s1, mixing modified aspartic acid with a fertilizer carrier; s2, adding mannooligosaccharide, brown algae oligosaccharide, magnetic polysaccharide and 2, 5-dihydroxyl terephthalamide components, and continuously and uniformly mixing; S3, mixing the mixture with a surfactant to ensure that all components are uniformly distributed, and obtaining the final fertilizer synergist.
  9. 9. The method for preparing the fertilizer synergist by taking the fertilizer as the carrier, wherein the mixing condition in the step (1) is 25-50 ℃, the stirring speed is 100-300 rpm, the reaction time is 30 minutes-1 hour, the continuous mixing condition in the step (2) is 30-60 ℃, the stirring speed is 150-400 rpm, the reaction time is 1-2 hours, the mixing condition in the step (3) is 25-40 ℃, the stirring speed is 200-500 rpm, and the reaction time is 30 minutes-1 hour.

Description

Fertilizer synergist with aspartic acid, brown alginate oligosaccharides, mannooligosaccharides and magnetic polysaccharide as carrier and preparation method thereof Technical Field The invention relates to the field of agricultural chemicals, in particular to a fertilizer synergist based on aspartic acid, brown alginate oligosaccharides, mannooligosaccharides and magnetic polysaccharide and taking fertilizer as a carrier and a preparation method thereof. Background The traditional fertilizer is widely applied in agricultural production and is mainly used for improving crop yield. However, long-term use of fertilizers suffers from a number of problems including low fertilizer utilization, fertilizer loss, environmental pollution, etc. In particular, in the rain wash or irrigation process, fertilizer nutrients which are not absorbed by crops are easy to run off, so that groundwater pollution, soil acidification and emission of nitrogen oxide and other chamber gases are caused. Excessive fertilization can also cause the accumulation of harmful substances in the soil, affect the health of the soil, and threaten the growth of crops. To solve these problems, researchers have proposed various fertilizer potentiators including natural substances and synthetic chemicals such as amino acids, plant extracts, humic acids, etc. The synergists can improve the utilization rate of the fertilizer, reduce the loss and volatilization of the fertilizer and further reduce the pollution to the environment by improving the solubility, slow release property, stability and other characteristics of the fertilizer. However, most of the existing fertilizer synergists have the problems of higher production cost, poor environmental adaptability, poor compatibility with different types of fertilizers and the like while enhancing the fertilizer efficiency. Therefore, the development of a new fertilizer synergist not only can improve the fertilizer effect, but also has environmental protection and cost benefits, and becomes an important direction of research in the current agricultural field. Disclosure of Invention In order to solve the problems of low fertilizer utilization rate, serious environmental pollution and high production cost in the background technology, the invention aims to provide a fertilizer synergist based on aspartic acid, brown alginate oligosaccharides, mannooligosaccharides and magnetic polysaccharide and taking fertilizer as a carrier and a preparation method thereof. The invention adopts natural components of modified aspartic acid, brown alginate oligosaccharides, mannooligosaccharides and magnetic polysaccharide, and enhances the slow release property of the fertilizer and the nutrient absorption capability of crops through synergistic effect and innovative modification. The fertilizer synergist provided by the invention can obviously improve the fertilizer utilization rate, reduce fertilizer loss, improve the crop growth benefit, and has better environmental friendliness and cost benefit. The aim of the invention can be achieved by the following technical scheme: the fertilizer synergist comprises, by weight, 3-6 parts of modified aspartic acid, 1-3 parts of mannooligosaccharide, 2-4 parts of brown alginate oligosaccharide, 3-5 parts of magnetic polysaccharide, 1-2 parts of 2, 5-dihydroxyterephthalic acid benzamide, 10-50 parts of a fertilizer carrier, 0.5-2 parts of a surfactant, 0.1-0.5 part of an antioxidant and 0.1-0.5 part of modified aspartic acid Optionally, the modified aspartic acid comprises the following raw materials, by weight, 5-10 parts of aspartic acid, 0.5-1.5 parts of aminosilane, 0.5-1 parts of epoxy resin, 0.2-0.8 part of plasticizer, 0.1-0.5 part of cross-linking agent and 50-100 parts of deionized water, wherein the plasticizer is di (2-ethylhexyl) phthalate, and the cross-linking agent is diisocyanate. Optionally, the preparation method of the modified aspartic acid comprises the following steps: (1) Dissolving the aspartic acid in deionized water, and stirring until the aspartic acid is completely dissolved to obtain an aspartic acid solution; (2) Sequentially adding aminosilane and epoxy resin into the aspartic acid solution, and stirring for reaction; (3) Continuously adding a plasticizer and a crosslinking agent, and continuously stirring to react until the modification reaction is complete, so as to form a modified aspartic acid solution; (4) Evaporating the obtained modified aspartic acid solution to remove the solvent, thereby obtaining the solid modified aspartic acid. Optionally, the stirring reaction condition in the step (2) is that the temperature is 25-50 ℃, the stirring speed is 100-300 rpm, and the reaction time is 30 minutes-2 hours. Optionally, the reaction condition of continuous stirring in the step (3) is that the temperature is 30-60 ℃, the stirring speed is 150-400 rpm, and the reaction time is 1-3 hours. Optionally, the evaporation condition in the step (4) is that