Compound microbial fertilizer for preventing and treating take-all disease of wheat and preparation method of compound microbial fertilizer

Abstract

The invention discloses a compound microbial fertilizer for preventing and treating take-all disease of wheat and a preparation method of the compound microbial fertilizer. The compound microbial fertilizer consists of the following raw materials: streptomyces catenulae, streptomyces albolongus, bacillus flexus, bacillus aryabhattai and trichoderma brevicompactum. The strains of the invention, on the basis of the comprehensive utilization of microbial inter-species or intra-species antibiosis, competition, hyperparasitism and bacteriolysis effects or by inducing the wheat to generate disease resistance by virtue of secondary metabolites, can generate various antibiotics, such as proceomycin, neomycin E, catenulin, diparomomycin and the like, so as to inhibit pathogenic bacteria of the take-all disease of wheat; the five strains adopted by the invention are directly separated from soil and have a rhizosphere growth promoting effect; the strains can promote reproduction and growth on crop surfaces or in plants or soil, and meanwhile, the strains can take an effect on nitrogen fixation and can promote the directional secretion of some secondary metabolites from plant rhizosphere; and the strains can enhance nutrition absorption of plants and stimulate plant growth, so that the effects of the fertilizer are achieved.

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 controlling wheat take-all and a preparation method thereof. Background technique [0002] Wheat take-all disease is a soil-borne and destructive disease caused by the infection of Ascomycota acrotheca genus, which has caused serious losses to humans. The disease is susceptible throughout the wheat growth period. After the onset at the seedling stage, the primary roots and underground stems of wheat seedlings turn dark brown, and there are many lesions on the secondary roots. In severe cases, the lesions are connected together, causing the entire root system to turn black and die. Short, with yellowish leaves on the ground, easy to break off from the rhizome. There are no obvious symptoms in the aboveground part of the millet division stage, only the seriously disease...

AI Technical Summary

Problems solved by technology

[0005] Due to the diversity and simultaneous evolution of pathogenic bacteria, the existing single antagonistic strains cannot achieve ideal control effects due to their single mode of action, unstable control effect, and production and use. Therefore, many biological functions of biocontrol bacteria need to rely on The synergy between two or more strains of bacteria can play a better role