Mixture of bacterial medicine for controlling vegetable epidemic disease and preparation method

Abstract

The invention belongs to the field of chemical and biological soil treatment agents and preparation methods thereof, in particular to the field of a bacterial-drug mixture capable of preventing and controlling vegetable blight and the preparation method thereof. The method can be carried out in sequence as follows: Fermentation and cultivation of biocontrol strains with antagonistic effects on vegetable blight pathogens, and then centrifuging the bacterium precipitate obtained from the fermentation broth and mixing it with micropowder calcium carbonate at a mass ratio of 1:1 to prepare a biocontrol agent; b) making the biocontrol agent formed in step a The biocontrol fungicide is compounded with the fungicide whose active ingredient content is 50% according to the mass ratio of 1:1. The invention can reduce the application amount of chemical pesticides on facility vegetables by more than 50%, partially or completely replace traditional high-toxicity and high-residue pesticides, ensure that the vegetable pesticide residues are below the allowable standard, and meet the requirements for pollution-free vegetable production.

Description

technical field [0001] The invention belongs to the field of chemical and biological soil treatment agents and preparation methods thereof, in particular to the field of a fungus-drug mixture capable of preventing and controlling vegetable blight and the preparation method thereof. Background technique [0002] Blight is a serious disease in vegetable production. Common blight mainly includes pepper blight, tomato late blight and cucumber blight. In my country, pepper blight is the most serious. In recent years, due to changes in varieties, cultivation systems, and fertilizer and water conditions, the disease has increased year by year, and the diseased area has expanded from south to north year by year. The death rate in severely diseased areas can reach more than 80%, and the yield loss is very significant. Capsicum blight can occur throughout the growth period of peppers, especially when peppers are budding and fruit-setting. Under favorable weather conditions, the dise...

AI Technical Summary

Problems solved by technology

However, due to the fact that a single biocontrol factor is difficult to achieve the same control effect as the use of chemical fungicides under different environmental conditions; and the biocontrol factors are sensitive to fluctuations in the environmental conditions of the soil or the root circle of crops, under the ecological conditions of pathogenic bacteria in the field , the colonization ability of biological control factors is very different

At present, the research on biological control of vegetable diseases is mostly carried out in laboratories and greenhouses, and has not been used in large-scale production practice.

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