Composite microbial fertilizer for control of botrytis cinerea and preparation method thereof

Abstract

The invention discloses a composite microbial fertilizer for control of botrytis cinerea and a preparation method thereof. The composite microbial fertilizer is prepared by mixing of the following raw materials: a Str. Viridifaciens fermentation broth, a S. champavatii fermentation broth, an India bacillus fermentation broth, a B. mojavensis fermentation broth, and a Trichoderma ovalisporium fermentation broth. The strains involved in the invention can comprehensively utilize the antibiosis, competition, hyperparasitism and bacteriolysis effects between or within microbial species, or utilize secondary metabolites to induce the disease resistance of tomatoes, and can generate a variety of antibiotics like tetracycline, 7-aureomycin, champamycin A and B (antifungal antibiotics of heptaene) and champavatin to inhibit botrytis cinerea pathogenic bacteria and strengthen its disease prevention effect. The composite microbial fertilizer provided by the invention is safe to human and livestock, is environment-friendly, and does not produce drug resistance when applied to control of botrytis cinerea. The composite microbial fertilizer has the advantages of simple preparation method, low cost, and easy use.

Description

technical field [0001] The invention belongs to the technical field of agricultural biological control and microbial fertilizer, and in particular relates to a compound microbial fertilizer for preventing and treating tomato gray mold and a preparation method thereof. Background technique [0002] Botrytis cinerea, as a fungal disease that harms tomato production in modern cultivation, often causes huge losses. Tomatoes in some protected areas in our country are seriously damaged by gray mold, and the yield reduction is as high as 60% or more; many protected tomato areas are damaged by gray mold, resulting in a 20%-30% reduction in yield, and more than 50% in severe areas; tomatoes in Jiaodong, Shandong Province The young fruit is affected by Botrytis cinerea, and the yield is reduced by 10%-30%, and the yield is even severe in severe plots. [0003] Botrytis cinerea is a worldwide fungal disease caused by Botrytis cinerea, which seriously affects the yield and quality of t...

AI Technical Summary

Problems solved by technology

Due to the diversity and synchronous evolution of pathogenic bacteria, a single antagonistic strain cannot achieve an ideal control effect, so it is necessary to find a combination of different types of bacteria to form a combination with better control effect against Botrytis cinerea

Due to the diversity and synchronous evolution of pathogenic bacteria, a single antagonistic bacterial strain cannot achieve an ideal control effect. Therefore, many biological functions of biocontrol bacteria need to rely on the synergy between two or more strains of bacteria to exert a better effect. good effect