Bactericide for preventing and controlling scab of Guanxi honey pomelo and preparation method thereof

Abstract

The invention discloses a bactericide for preventing and controlling scab of Guanxi honey pomelo. The bactericide is an aqueous emulsion bactericide. Every 1000g of the water emulsion bactericide mainly comprises 100-180g of antibacterial pesticide, 50-80g of allicin, 20-40g of chlorophyll, 28-45g of chitosan, 10-16g of polydopamine, 3-8g of plant activator benzothiadiazole, 2-6g of pectinase crude extract, 2-6g of SOD enzyme, 6-12g of potassium carbonate, 8-11g of surfactant, 20-40g of film spreading oil and 20-35g of emulsifier and the balance of water. The alkaline pesticide is matched withpotassium carbonate to adjust the pH value, sterilization and nutritional factors are added, the resistance of honey pomelo trees is enhanced, the fruit quality is improved, synthesis of lignin in honey pomelo peel is induced, the system resistance of honey pomelo is improved, and the surface of honey pomelo is kept dry and a part of antibacterial factors are locked by utilizing the characteristics of a film spreading oil agent, and the long-term antibacterial effect is realized.

Description

technical field [0001] The invention relates to the field of pesticides, in particular to a fungicide for preventing and controlling Guanxi pomelo scab and a preparation method thereof. Background technique [0002] Scab is caused by the infection of the fungus Cladosporium solani. The fungus survives the winter as mycelium or conidia along with the diseased residues in the field, in the soil, and on the scaffolding of the shed, and becomes the source of primary infection in the coming year. Seeds can also be infected with the fungus. The pathogen mainly penetrates directly from the epidermis, or invades from the stomata and wounds to cause the disease. The conidia produced on the diseased plants spread in the field by airflow, rainwater splashing and agricultural operations. The growth and development temperature of the pathogen is 2-35°C, the suitable temperature is 20-22°C, the relative humidity is above 93%, and the daily average temperature is 15-30°C, it is easier to...

AI Technical Summary

Problems solved by technology

[0003] Because scab usually invades in the young fruit stage, and the symptoms will not appear until the fruit is nearly ripe, it is difficult to prevent and treat in advance. The existing fungicides can only reduce the damage of scab to a certain extent, but their effect is limited , there is still a large disease loss

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