Method for preparing salt-resistant alkali-resistant special algal biological water-soluble fertilizer by enzymatic hydrolysis fermentation

Abstract

The invention discloses a method for preparing salt-resistant alkali-resistant special algal biological water-soluble fertilizer by enzymatic hydrolysis fermentation, characterized by comprising: (1), pretreating algae; (2), carrying out ultrasonic-assisted enzymatic hydrolysis; (3), preparing fermentation broth; (4), aerobically fermenting; (5), fermenting in two steps; (6), filtering; (7), concentrating. refractory macromolecular substances in algae are degraded into small molecule polysaccharides, monosaccharides and nitrogen-bearing compounds by means of composite enzymatic hydrolysis and multi-bacteria co-fermentation, a great amount of soil beneficial bacteria and various specially-effective metabolites are generated, bioactivity of the algal fertilizer is improved, strong alkali, high temperature and high pressure are avoided being destroyed during algal fertilizer production, and rich nutrients in algae are fully reserved. This product integrates natural nutrients, antibiotics and plant hormones, has the composite effect of 'triple in one', organic fertilizer, microbial fertilizer and trace element fertilizer, is effective in improving saline and alkali soil and has a promising application prospect.

Description

technical field [0001] The invention belongs to the field of fertilizer production, and relates to a method for preparing seaweed biological water-soluble fertilizer special for saline-alkali resistance by enzymolysis and fermentation. Background technique [0002] At present, soil salinization is very serious, which has brought a great impact on agriculture, which is not conducive to the planting of plants, and has brought adverse effects on agricultural resources. In my country's 100 million square kilometers of arable land, about 10% of the land is saline soil. In addition, there are more than 2,000 hectares of salt wasteland, most of which have not been cultivated. How to reclaim and utilize these salinized soils, expand planting area, and increase national income is one of the important issues in current agricultural production. At present, the national government and scientific researchers are paying attention to the restoration of salinized soil, actively carrying ou...

AI Technical Summary

Problems solved by technology

At present, seaweed fertilizers and microbial fertilizers are relatively new types of improved products. They have good application prospects in the fields of improving the soil environment and utilizing salinized land. They are not only low in cost, but also have the advantages of no secondary pollution. Many experts and scholars have recognized seaweed The improvement effect of functional substances and microorganisms; however, in the application of seaweed fertilizers and microbial fertilizers to improve salinized land, there are still disadvantages such as poor effect and high improvement costs, and large-scale promotion and application have not yet been realized, and the integration and application of key industrialization technologies are urgently needed