Botanical pesticide for preventing and controlling downy mildew of grapes and preparation method and application of botanical pesticide

Abstract

The invention discloses a botanical pesticide for preventing and controlling downy mildew of grapes and a preparation method and an application method of the botanical pesticide, and belongs to the technical field of pesticides. The botanical pesticide for preventing and controlling the downy mildew of the grapes mainly comprises the following components in percentages by mass: 15-18% of cinnamomum camphora branches and leaves, 30-33% of pinus massoniana needles, 40-45% of sage stems and leaves and 9-12% of inula japonica inflorescences. The preparation method of the botanical pesticide for preventing and controlling the downy mildew of the grapes comprises the following steps: placing the cinnamomum camphora branches and leaves, the pinus massoniana needles, the sage stems and leaves andthe inula japonica inflorescences into distilled water and decocting over slow fire for 2 h, collecting decoction, adding distilled water for decocting, merging two-time filtrates, concentrating at the temperature of 80-90 DEG C, cooling, then sequentially adding an extractant for extraction according to a ratio of 1: 1, concentrating an organic phase by a rotary evaporator to obtain powder, and uniformly mixing to obtain the product.

Description

technical field [0001] The invention relates to a botanical agent for preventing and treating grape downy mildew, a preparation method and application thereof, and belongs to the technical field of biological pesticides. Background technique [0002] Grape downy mildew is a fungal disease caused by downy mildew. Downy mildew mainly infects grape leaves. At present, downy mildew occurs in most grape producing areas in the world, and it is also distributed in various grape cultivation areas in my country, especially in rainy and humid areas. The area was severely affected by the disaster, which caused serious economic losses to grape production. At present, downy mildew is mainly prevented by using chemical fungicides in production, but long-term use of chemical pesticides is likely to make the bacteria resistant to pesticides, and it will also cause pesticide residues, damage the ecological environment, and pose a potential threat to people's lives. [0003] Botanical pestici...

AI Technical Summary

Problems solved by technology

[0002] Grape downy mildew is a fungal disease caused by downy mildew. Downy mildew mainly infects grape leaves. At present, downy mildew occurs in most grape producing areas in the world, and it is also distributed in various grape cultivation areas in my country, especially in rainy and humid areas. The area was severely affected by the disaster, causing serious economic losses to grape production

At present, the production mainly uses chemical fungicides to prevent and control downy mildew, but long-term use of chemical pesticides is likely to make the bacteria resistant to pesticides, and it will also cause pesticide residues, damage the ecological environment, and pose a potential threat to people's lives

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