Biological preparation for inducing plants to prevent and treat fungal diseases and preparation method and application thereof

Abstract

The invention provides a biological preparation for inducing plants to prevent and treat fungal diseases as well as a preparation method and application thereof. The biological preparation is prepared from the following raw materials in parts by weight: 5 to 20 parts of bacillus velezensis HAB-2, 5 to 10 parts of bacillus licheniformis, 3 to 10 parts of metarhizium anisopliae and 1 to 3 parts of gamma-aminobutyric acid. The biological agent for inducing the plants to prevent and treat the fungal diseases, which is prepared by combining the biocontrol inoculant and the inducer, not only can induce a plant system to obtain resistance and activate a defense system of the plants so as to enhance the prevention and treatment of the fungal diseases of the plant bodies, but also can promote and accelerate the growth and development of the plants. The compound can be used for inducing bananas, pineapples, guavas and strawberries to prevent anthracnose, leaf spot and ring spot, has a good field application effect, is green, healthy and pollution-free, is simple in preparation and use methods, and has important significance on plant diseases caused by fungi, and the prevention and treatment effect is equivalent to that of pesticide prevention and treatment.

Description

technical field [0001] The invention relates to the technical field of biological preparations, in particular to a biological preparation for inducing plant prevention and treatment of fungal diseases and its preparation method and application. Background technique [0002] Plant diseases caused by pathogenic fungi are one of the main factors affecting the high yield of crops, and 70-80% of plant diseases are caused by fungi. The study of antifungal agents with broad-spectrum antifungal is of great significance for the control of plant diseases caused by fungi. At present, microorganisms or their metabolites are mainly used to prevent and control plant diseases through the joint effect between different mechanisms. Previous studies have found that Bacillus velezensis can better inhibit the growth of fungal pathogens. [0003] However, the microbial preparations prepared by Bacillus Velez are usually live bacterial preparations. Therefore, when they are actually applied in ...

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Problems solved by technology

[0003] However, the microbial preparations prepared by Bacillus Velez are usually live bacterial preparations. Therefore, when they are actually applied in the field, the physiological activities of the strains are easily affected by natural conditions, which affect their colonization ability and activity, often resulting in insufficient Form a stable biological population, so that the control effect obtained under the experimental conditions is not uniform with the actual control effect in the field, reducing its application effect in the field

Moreover, the control mechanism usually played by microbial agents is competition and antagonism, and it is rare to induce plants to increase resistance and combine several different control mechanisms.

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