Composite microbial bacterial agent for controlling soil pollution and its preparation method and application

Abstract

The invention discloses a compound microbial agent. The compound microbial agent comprises, by weight, 30-45 parts of acetobacter aceti culture, 35-60 parts of fusarium graminearum culture, 10-20 parts of yeast culture, 15-20 parts of micrococcus culture and 10-20 parts of bacillus subtilis culture; according to the composite microbial agent, through the acetobacter aceti culture, the fusarium graminearum culture, the mixed culture of micrococcus and bacillus subtilis and other mixed microbial agents prepared by mixing other microorganisms used for treating contaminated soil, safe and effective decomposition of contaminant petroleum hydrocarbons in alkaline soil is achieved, and at the same time, the mixed culture of strains and the preparation of culture media effectively inhibit the formation of harmful spores in fusarium graminearum.

Description

technical field [0001] The invention relates to a microbial bacterial agent and its preparation method and application, in particular to a composite microbial bacterial agent for treating alkaline soil polluted by organic matter and its preparation method and application. Background technique [0002] Pollutants produced by human activities enter the soil and accumulate to a certain extent, causing soil quality to deteriorate, and then causing some indicators in crops to exceed national standards, resulting in soil pollution. There are various ways for pollutants to enter the soil. Pollutants contained in exhaust gas, especially particulate matter, settle to the ground and enter the soil under the action of gravity. Wastewater carries a large amount of pollutants into the soil. Pollutants in solid waste directly enter the soil or Its exudate enters the soil. Among them, the pollution and omission accidents in the process of oil mining, smelting, use and transportation, as w...

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Problems solved by technology

[0003] In the prior art, the application of chemical methods, such as chemical modifiers, surfactants or biological improvement measures, increases the environmental capacity of the soil and enhances the ability of soil purification to apply lime, alkaline phosphate, iron oxide, carbonate and Chemical modifiers such as sulfides can accelerate the decomposition of organic matter; however, due to the different soil acidity and alkalinity in my country, especially in coastal plains, estuary deltas, and Huanghuaihai plains, coastal saline areas and yellow rivers are formed due to the comprehensive influence of natural conditions and soil intrinsic factors. In the saline area of ​​the Huaihai Plain, when the commonly used chemical methods are used to treat the polluted soil, the rich calcium, excessive application of lime and irrigation of alkaline sewage will aggravate the deterioration of the soil alkaline condition

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