Total-nutrient kelp oligosaccharide biological synergistic fertilizer and preparation method thereof

Abstract

The invention relates to a total-nutrient kelp oligosaccharide biological synergistic fertilizer and a preparation method thereof. The preparation method comprises the steps of: firstly soaking kelps in water and filtering soaking water; crushing the soaked kelps, adding kelp powder into the filtered soaking water and adding alginic acid lyase for enzymolysis; and after the enzymolysis is completed, conducting low-temperature concentration to enzymatic hydrolyzate to complete the preparation of liquid fertilizer. Since the temperature in the whole production process is controlled to be below 50 DEG C and any chemical is not used, the total-nutrient kelp oligosaccharide biological synergistic fertilizer has the characteristics of environmental friendliness, ecological and environmental protection, energy saving and emission reduction, natural plant growth promoting factors in the kelps are fully reserved, compositions such as iodine, alginic acid oligosaccharide, mannitol and fucoidan capable of resisting diseases and adversity, preserving water and moisture and resisting ionizing radiation, ultraviolet radiation and nuclear radiation are added and the efficacy that medicine and the fertilizer are combined together is obtained.

Description

technical field [0001] The invention belongs to the technical field of seaweed biological fertilizers, and in particular relates to a full-nutrition kelp oligosaccharide biosynergistic fertilizer and a preparation method thereof. technical background [0002] Kelp is a huge adsorbent, it can concentrate 440,000 times the nutrients in the ocean, which is very suitable for feeding barren land. In addition, a large amount of nutrients in the land are discharged into the ocean through rainwater and rivers to form a reasonable biological cycle. Worldwide, about 21.5 million tons of nitrogen and 2 million tons of potassium flow from land to rivers through rainwater and then into the ocean. Kelp as an agricultural plant growth regulator is to recombine the nutrients that originally came from land through the "reactor" of kelp and return them to land plants. [0003] Kelp bio-fertilizer is a kind of agricultural seaweed bio-fertilizer that can promote crop growth, increase yield, ...

AI Technical Summary

Problems solved by technology

[0006] (2) Alginic acid in alginic acid-containing fertilizers does not reach the 2% level of my country's industry standard, and the phenomenon of compounding alginic acid, nitrogen, phosphorus, potassium, trace elements, fulvic acid and humic acid is serious, which also reduces the amount of algae The active ingredients of other seaweeds in the fertilizer weaken the synergistic effect of the seaweed fertilizer

[0007] (3) Lack of a specific lyase that degrades macromolecular alginate in kelp into oligosaccharides, which is also a technical bottleneck restricting kelp bio-fermentation fertilizers. The market kelp fermentation fertilizers basically use cellulase, protease, yeast, Fermentation of papain, hemicellulase and pectinase, etc. These enzymes cannot degrade the most active alginic acid metal salt with a valence of more than 2 in kelp into small molecules of water-soluble fucoidan oligosaccharides, which are dissolved from seaweed

[0008] (4) In the production of existing seaweed fertilizer, the soaking water of sea-tangle is not utilized, but is discharged as waste water, which not only wastes water-soluble active ingredients in sea-tangle such as iodine, potassium, magnesium, manganese, titanium, trace elements, Vitamins, N-containing compounds, highly unsaturated fatty acids, seaweed enzymes, betaine, amino acids and various natural plant growth regulators (plant auxins, gibberellins, cytokinins, polyphenolic compounds and natural antibiotic substances) and Fucoidan sulfate and mannitol also pollute the environment and cannot reflect the full nutrition of kelp