Multifunctional agricultural soil remediation bacterium agent as well as preparation method and application thereof

Abstract

The invention provides a multifunctional agricultural soil remediation bacterium agent as well as a preparation method and application thereof, and relates to a bacterium agent as well as a preparation method and application thereof, aiming at solving the problems of an existing microorganism degradation method of DBP (Dibutyl Phthalate) that microorganisms are easily influenced by soil environment factors including indigenous microorganism competition, soil temperature and the like, relatively high bioactivity is difficult to keep and the function is relatively single. The bacterium agent isprepared from a microorganism bacterium agent A and a DBP degradation bacterium fermentation solution, wherein the microorganism bacterium agent A is prepared from a sphingobium fermentation solution,a bacillus mucilaginosus fermentation solution and a klebsiella oxytoca fermentation solution. The method comprises the following steps: preparing the microorganism bacterium agent A; preparing the DBP degradation bacterium fermentation solution; mixing the DBP degradation bacterium fermentation solution with the microorganism bacterium agent A to obtain the multifunctional agricultural soil remediation bacterium agent. The bacterium agent provided by the invention can keep relatively high biological remediation activity in a soil environment for a long term, and the remediation efficiency ofDBP pollution is effectively improved; when DBP polluted soil is repaired, the fertility of the polluted soil also can be improved. The multifunctional agricultural soil remediation bacterium agent is used for the field of soil remediation.

Description

technical field [0001] The invention relates to a bacterial agent and its preparation method and application. Background technique [0002] The rapid development of agriculture has led to the extensive use of agricultural mulch, and the use of agricultural mulch in China ranks first in the world, and the situation of white pollution caused by agricultural mulch is severe. Dibutyl phthalate (DBP) is an important phthalate ester (PAEs) compound, as a plasticizer, it is widely used in plastic agricultural film. The extensive use of agricultural film has led to serious DBP pollution in agricultural soil in my country. DBP pollution will not only lead to deterioration of soil quality and affect agricultural production, but DBP will also accumulate in crops and enter the human body through the food chain, causing damage to human endocrine, nervous system, etc. Harm. At present, both China National Environmental Testing Center and the US Environmental Protection Agency (EPA) list ...

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the problem that in the existing DBP microbial degradation method, microorganisms are easily affected by soil environmental factors such as indigenous microbial competition and soil temperature, and it is difficult to maintain high biological activity and relatively single function, and provide a multifunctional agricultural soil Restoration bacteria agent and its preparation method and application

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