Microorganism compound bactericide for controlling cucumber fusarium wilt and preparation method thereof

Abstract

The invention provides a microorganism compound bactericide for controlling cucumber fusarium wilt and a preparation method thereof. The microorganism compound bactericide for controlling cucumber fusarium wilt is characterized by consisting of 10 to 15 parts by weight of rhodopseudanonas palustris, 30 to 40 parts by weight of bacillus subtilis, 15 to 18 parts by weight of streptomyces, 20 to 23 parts by weight of lactobacillu plantarum and 10 to 15 parts by weight of saccharomyces cerevisiae. The preparation method is characterized by comprising the following steps of: screening the rhodopseudanonas palustris, the bacillus subtilis and the streptomyces, and respectively inoculating and culturing in a flask in which nutrient agar culture media are put; mixing obtained strains with the lactobacillu plantarum and the saccharomyces cerevisiae; and inoculating mixed lawn in a liquid culture dish, and fermenting in a fermentation tank to obtain the microorganism compound bactericide. In the invention, soil ecological environment is repaired and improved under the condition of inhibiting the reproduction of fusarium wilt pathogenic bacteria and controlling pathogenetic scale and degree,meanwhile, cucumber growth and yield are improved.

Description

technical field [0001] The present invention relates to a microbial compound bacterial agent for preventing and treating cucumber wilt and a preparation method thereof, in particular to a method for preventing and treating fusarium wilt by microorganisms that inhibit the proliferation and reproduction of cucumber wilt pathogens (Fusarium oxysporum, etc.) and eliminate the ability of pathogenic bacteria to spread and infect A microbial compound bacterial agent and a preparation method thereof belong to the technical field of biocontrol. Background technique [0002] Fusarium oxysporum, the pathogen of melon (cucumber, watermelon and muskmelon), is Fusarium oxysporum. When the disease occurs, the pathogenic bacteria mainly invade the vascular bundles at the root and stem base of the plant, multiply and spread in the vascular bundles, and poison the host cells by blocking the vascular bundle ducts and secreting toxic substances, destroying the normal absorption and transportati...

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Problems solved by technology

[0006]A currently published patent application document, titled "A marine Bacillus subtilis and its preparation for isolation and control of cucumber wilt", application number: CN200810011342, It is a microbial preparation made by fermentation of marine Bacillus subtilis. It is applied deep in the soil to kill and inhibit the reproduction of pathogenic bacteria. Due to the single strain used, it is difficult to meet the complex soil environment requirements, making the environment of the preparation suitable. limited efficacy and stability, and therefore limited control of cucumber wilt

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