Straw fiber-based slow-release biological bacterial fertilizer and preparation method

Abstract

The invention relates to a straw fiber-based slow-release biological bacterial fertilizer and a preparation method, and belongs to the technical field of biological bacterial fertilizers. The biological bacterial fertilizer is obtained by using straw fiber and algal powder as main raw materials, adding medium and trace elements and functional microorganisms and fermenting. The straw fiber is loaded with a large amount of functional microorganisms, so that soil microecology is regulated and the soil structure is improved; high molecular components in the algal powder are chelated with the medium and trace elements to form sustained-release gel granules, so that moisture is retained and nutrients are slowly released. Through resource utilization of the straw fiber and the algal powder in thebiological bacterial fertilizer, preparation of a high-efficiency slow-release fertilizer is achieved; the biological bacterial fertilizer has significant regulating and promoting effects on soil improvement, soil fertility improvement and crop growth.

Description

technical field [0001] The invention relates to a slow-release biological bacterial fertilizer based on straw fiber and a preparation method thereof, belonging to the technical field of biological bacterial fertilizer. Background technique [0002] With the improvement of the intensification of agricultural production and the increasing application of chemical fertilizers, the application of manure and green manure has been greatly reduced, and crop straw will become an important source of organic fertilizer to improve soil fertility. Straw returning can not only increase soil organic matter content, improve soil physical and chemical properties, optimize farmland ecological environment, but also promote the recycling of rural nutrient resources and sustainable agricultural development. The common forms of straw returning to the field mainly include smashing and pressing, covering, stacking and retting, and belly returning. Crushing, pressing and covering returning to the f...

AI Technical Summary

Problems solved by technology

Peat and vermiculite resources are unevenly distributed and limited, and the collection cost is high, which limits their application; although animal manure contains rich nutrients that can be used by microorganisms, it also carries pathogenic bacteria, antibiotics and heavy metal ions, which are harmful to plant growth. It will have adverse effects; when the straw is directly crushed as a bacterial fertilizer carrier, the eggs and bacteria in the straw still exist, and the pests and diseases will occur directly after application or in the next year after overwintering. At the same time, the lignin, hemicellulose, cellulose, etc. in the straw It is difficult to decompose and affect farming; diatoms have a good adsorption effect on bacterial strains, but lack of organic matter, it is difficult to provide continuous nutrient supply for bacterial strain reproduction; skimmed milk is rich in nutrients, which is conducive to microbial reproduction, but the cost is too high and very It is difficult to apply it to agricultural production; biochar has high porosity and specific surface area, which can improve the effect of microbial fertilizer in soil, but its preparation requires pyrolysis and high technical requirements, so it is difficult to promote