Preparation process of graphene synergistic biological nano-selenium biological bacterial fertilizer

Abstract

The invention discloses a preparation process of a graphene synergistic biological nano-selenium biological bacterial fertilizer. The graphene synergistic biological nano-selenium biological bacterialfertilizer is formed by compounding a micro-nano biological bacterial fertilizer, biological nano-selenium and a graphene nano-material according to a weight part ratio of 1000:(1.5-3.0):(5.0-30), wherein the total number of organic nutrient substances and inorganic nutrient substances with the particle size in a range of 100-600 nanometers required by plants in the micro-nano biological bacterial fertilizer is not less than 50%, the proportion of graphene particles with the diameter smaller than 200 nanometers is 10% or above; and the selenium content is 1000-2000ppm / Kg. According to the preparation process, production equipment and a process for producing the graphene synergistic micro-nano biological bacterial fertilizer are utilized, and inorganic selenium is converted into biologicalnano-selenium directly in the graphene synergistic micro-nano biological bacterial fertilizer by virtue of effective viable bacteria flora in the biological bacterial fertilizer through biological conversion, so that the graphene synergistic biological nano-selenium biological bacterial fertilizer is prepared.

Description

technical field [0001] The invention belongs to the technical field of agriculture, and relates to a process for preparing a biological bacterial fertilizer, in particular to a process for preparing a graphene-enhanced micro-nano biological bacterial fertilizer. Background technique [0002] Biological bacterial fertilizer is the main variety of new fertilizers in the 21st century. It is a specific fertilizer containing living microorganisms. Based on the principles of biology, botany and plant nutrition, biological beneficial bacteria and plant nutrition are added to the fertilizer. It is composed of trace elements and other components, and has become an important variety in fertilizers. [0003] Biological bacterial fertilizer plays an irreplaceable role in improving the utilization rate of nutrient transformation, maintaining soil and plant health, increasing production and efficiency, reducing weight and increasing efficiency, improving quality and efficiency, and ensuri...

AI Technical Summary

Problems solved by technology

[0019] When the above-mentioned patented technology uses microorganisms to convert and synthesize biological nano-selenium, it adopts very strict process conditions and uses specialized equipment. The process is complicated and the investment in equipment is relatively large. Large-scale field application affects the production of selenium-enriched agricultural and forestry products with low cost and high quality

Moreover, there are also defects in nano-selenium. In the absence of a protective agent, nano-selenium is easy to agglomerate, its physical and chemical properties are unstable, and it is easy to lose its biological activity at room temperature.