Photosynthetic bacterium strain, liquid manure containing same, preparation method of liquid manure and application of liquid manure

Abstract

The invention relates to a photosynthetic bacterium strain and liquid manure rich in photosynthetic bacterium strain and belongs to the technical fields of microbial fermentation, agricultural planting and the like. The photosynthetic bacterium strain is identified as Rhodopseudomonas sp. HL with the preservation number CGMCC No.11874 and can reproduce and grow rapidly by a biogas slurry matrix under an illumination or dark condition. The invention further provides application of the photosynthetic bacterium strain as the microorganism liquid manure. According to the application, the liquid manure is obtained by culturing the Rhodopseudomonas sp. HL in fresh biogas slurry serving as a raw material, and Rhodopseudomonas sp. HL concentration in bacterium liquid is not less than 108CFU / mL. The photosynthetic bacterium strain, the liquid manure rich in the photosynthetic bacterium strain and the application of the photosynthetic bacterium strain have the advantages that biogas slurry use and photosynthetic bacterium culture are coupled, so that the microbial liquid manure with multiple special properties is produced, and a cheap green biogas slurry high-added-value development technology and a cheap green biogas slurry high-added-value product are provided.

Description

technical field [0001] The invention relates to a microbial strain and a liquid fertilizer rich in the strain, in particular to a microbial liquid fertilizer based on biogas slurry raw materials, a preparation method and application thereof, and belongs to the technical fields of microbial fermentation and agricultural planting. Background technique [0002] With the development of my country's livestock and poultry breeding industry, the annual production of livestock and poultry manure has reached 2.5 billion tons. At the same time, my country is a large agricultural country, and agricultural production produces more than 700 million tons of crop straw every year. Anaerobic fermentation technology, represented by biogas engineering, is an environmentally friendly technology that can absorb organic waste such as livestock and poultry manure, crop stalks, and household garbage, and alleviate energy shortages, and has been increasingly widely used. According to statistics, as...

AI Technical Summary

Problems solved by technology

At present, the high additional development and utilization of biogas slurry has also been reported successively. For example, CN105254367A discloses a "method for preparing special fertilizer for drip irrigation from biogas slurry". This method uses clarified biogas slurry as the base material and adds nutrients and microorganisms Special fertilizer for drip irrigation can be prepared by mixing bacterial agents, but this method requires a large investment in equipment and high processing and operating costs

CN102503660A discloses a "high-efficiency microbial liquid bacterial fertilizer made from biogas slurry and its application". The bacterial fertilizer is based on clarified biogas slurry, microbial functional bacteria, plant growth regulator, and diffusing agent. The microbial liquid fertilizer was prepared by mixing, but a large amount of inorganic chemical components were added to the fertilizer, which destroyed the natural components of the biogas slurry

[0003] To sum up, the high value-added development of biogas slurry mostly stays at the technical level of biogas slurry concentration and biogas slurry mixing. These technologies either have huge investment in equipment and high operating costs; or have problems such as destroying the natural components of biogas slurry.

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