Compound functional organic bacterial fertilizer as well as preparation method and application thereof

Abstract

The invention discloses a compound functional organic bacterial fertilizer as well as a preparation method and application thereof. The compound functional organic bacterial fertilizer comprises 96-98 parts of mushroom residue organic fertilizer and 2-4 parts of compound functional microbial agent, wherein the composite functional microbial agent comprises the following components in percentage by mass: 30%-45% of a klebsiella microbial agent, 20%-25% of a penicillium microbial agent, 15%-25% of an aspergillus niger microbial agent and 5%-20% of a bacillus subtilis microbial agent. The preparation method comprises the following steps: mixing the mushroom residue organic fertilizer with the composite functional microbial agent, and fermenting to obtain the composite functional organic bacterial fertilizer. The compound functional organic bacterial fertilizer disclosed by the invention has the advantages of being suitable for arbor-shrub-grass micro-ecological plant groups, being capable of reducing the concentration of heavy metals in a soil environment, promoting plant growth, effectively improving the efficiency of repairing heavy metal polluted soil by plants and the like, and being capable of promoting the plants to effectively repair the heavy metal polluted soil; good application values and application prospects are realized.

Description

technical field [0001] The invention belongs to the technical field of microbial preparations, and relates to a compound functional organic bacterial fertilizer and a preparation method and application thereof. Background technique [0002] The use of economical plant and microorganism joint remediation technology to treat heavy metal contaminated soil can organically combine soil remediation technology with biomass energy production, taking into account both ecological and economic benefits, and has broad application prospects. However, at present, many plant-microbe joint remediation technologies are often only aimed at a single plant, and most of them use hyperaccumulator plants and herbs are the main ones. Although this method has high heavy metal content in plants, its biomass is small, so the total amount of heavy metal absorption is small. , the removal efficiency is low; in addition, due to the single plant species, shallow root system, low soil-fixing effect of root...

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Problems solved by technology

However, because these plants are easily affected by heavy metal stress, they also have defects such as slow growth and small biomass, and the total amount of heavy metal enrichment is low, so the time for soil restoration is relatively long and the restoration efficiency is low.

[0003] At present, there is no special organic bacterial fertilizer suitable for arbor-shrub-grass micro-ecological flora, which can not only reduce the concentration of heavy metals in the soil environment, but also promote plant growth and can effectively improve the efficiency of phytoremediation of heavy metal-contaminated soil. Invented a kind of special organic bacterial fertilizer that is specially used in the arbor-shrub-grass micro-ecological flora to restore heavy metal-contaminated soil, which can reduce the toxicity of heavy metals in the soil environment and promote the growth of plants. It is of great significance to improve the growth of plants and improve the efficiency of phytoremediation of heavy metal-contaminated soils.

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