Enteromorpha prolifera and straw fertilizer synergist and preparation method thereof

Abstract

The invention discloses an enteromorpha prolifera and straw fertilizer synergist. A preparation method of the synergist comprises the following steps of: (1) pretreating enteromorpha prolifera and straw; (2) carrying out first-stage microbial fermentation degradation and ensilage; (3) performing second-stage biological enzymolysis; (4) carrying out catalytic oxidative degradation on a Mn<2+> / H2O2system at a third stage; and (5) carrying out centrifugal separation, microfiltration, concentration and spray drying to prepare the fertilizer synergist. Mixed ensilage of two seasonal resources, namely enteromorpha prolifera and straw, is realized by utilizing a composite strain microbial fermentation technology, the storage cost is low, and the period is long; the product prepared by adopting athree-stage degradation method is high in extraction rate of active substances and small in molecular weight, the average molecular weight is 300Da, the product is rich in enteromorpha sulfated oligosaccharide, uronic acid, amino acid and fulvic acid, is fully water-soluble, resistant to hard water, acid-base, activated phosphorus and calcium, has good chelating ability on trace elements like Cu,Fe, Zn and Mn, and has obvious effects in the aspects of repairing soil, stimulating crop photosynthesis, increasing the seedling rate and promoting root development. The product can be compounded and applied in various products like compound fertilizers, organic-inorganic compound fertilizers, water-soluble fertilizers and the like, can also be used independently as a fertilizer, is wide in application range, and is a novel fertilizer synergist suitable for sustainable development of "fertilizer reduction and synergy".

Description

technical field [0001] The invention belongs to the technical field of fertilizer synergist production, and in particular relates to an enteromorpha and straw fertilizer synergist and a preparation method thereof. [0002] technical background [0003] Enteromorpha is a large green algae, a genus of Chlorophyta Ulvaceae, which grows naturally along the coast. Enteromorpha is rich in carbohydrates, proteins, crude fiber, fatty acids, trace elements and other active ingredients, and has the characteristics of strong reproductive ability, rich nutrition and low harvesting cost. Due to the specificity of the marine living environment, the active ingredients of Enteromorpha have unique physiological characteristics. The comprehensive reuse of Enteromorpha can not only increase the added value of Enteromorpha, but also realize low-carbon economy, circular economy and sustainable development economy. Therefore, Enteromorpha is a seaweed resource with great development value. [00...

AI Technical Summary

Problems solved by technology

Among the existing patents, CN 108329137A discloses a preparation method of Enteromorpha bio-organic fertilizer, and CN107365208A discloses a straw fertilizer additive, neither of which combines the use of Enteromorpha and straw resources, and there is no use of Enteromorpha and straw in the industry. The technology and related products developed with the combination of various resources and applications come out