Production method of pharmaceutical composition for preventing and treating powdery mildew

Abstract

The invention discloses a production method of a pharmaceutical composition for preventing and treating powdery mildew, comprising the following steps: A, material preparation: 30% Score WG, 80% thiophanate methyl wettable powder, mint, cassia twig, baicalein, 75% chlorothalonil, gypsum and common cnidium fruit are prepared; B, alcohol leaching of an extract of gypsum and common cnidium fruit: gypsum and common cnidium fruit are crushed, broken and washed; after air drying, gypsum and common cnidium fruit are placed in a closed container; 60 wt% of an ethanol solution is added, gypsum and common cnidium fruit are infiltrated and immersed for 18 hours and then are placed in a percolator; the percolator is a barrel structure, a cone is arranged at the bottom of the barrel structure, and switch equipment for dripping is disposed below the cone for extraction of medicinal materials; medicinal materials are uniformly placed in the barrel; an immersion fluid, water or wine, is added and drips slowly; a percolate is collected; and ethanol is heated and recovered to obtain an extract; and C, 30% Score WG, 80% thiophanate methyl wettable powder, mint, cassia twig, baicalein and 75% chlorothalonil are combined with the extract obtained from the step B, the mixture is stirred uniformly and UV sterilization is finally carried out to obtain the pharmaceutical composition for preventing and treating powdery mildew. The pharmaceutical composition provided by the invention requires a simple composition ratio, is convenient to use and has a good effect of treating cucumber powdery mildew. Through tests, a liquid which accounts for 400-600 times the volume of the mixture has an obvious inactivation effect on fungi imperfecti Sphaerotheca powdery mildew, and has a good bactericidal effect.

Description

[0001] Technical field: [0002] The invention relates to vegetable medicines, in particular to a preparation method of a medicine composition for preventing and treating powdery mildew. [0003] Background technique: [0004] Cucumber powdery mildew, commonly known as "white hair disease", is the most serious damage to leaves, followed by petioles and stems, and generally does not harm fruits. In the early stage of the disease, small white powder spots on the front or back of cucumber powdery mildew-affected leaves will gradually expand into large white powder areas with inconspicuous edges, covering the leaf surface, as if sprinkled with white powder. Wipe off the white powder, it can be seen that the leaves are chlorotic, withered and yellow and brittle. When the disease is severe, the leaves are covered with white powder and become off-white until the whole leaf dies. After powdery mildew infects petioles and tender stems, the symptoms are similar to those on the leav...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problem of drug resistance caused by cucumber powdery mildew at present, the present invention provides a method for manufacturing a pharma...