Use method of pharmaceutical composition for preventing and treating powdery mildew

Abstract

The invention discloses a use method of pharmaceutical composition for preventing and treating powdery mildew. The use method includes the following steps that A. a stock solution is prepared, and components of the stock solution are 30% difenoconazole, 80% thiophanate methyl wettable powder, mint, cassia twig, baicalein, 75% chlorothalonil, gypsum and fructus anidii; B. water is added into the stock solution to be mixed to prepare diluent of 400-600 mass multiple ratio; C. 3.5-4kg of the diluent is used for each mu, spraying is conducted evenly on the front and the back of each leaf, especially on sick leaves, and spraying protection is conducted on upper healthy leaves; D. fertilizer is supplemented 3 days after the spraying is conducted, fertilizing loss and premature senility are prevented, plant disease resistance is improved, watering is not required in cloudy days after fertilizer is applied, ventilation is often conducted in sunny days, relative humidity of a greenhouse is reduced, temperature is prevented from being too high, and stuffiness is prevented; E. 3 days after spraying, sulphur smudging is conducted, and smudging is conducted for 10 minutes every day in the greenhouse. The use method is easy in matching, convenient to use and good in cucumber mildew treating effect. Through the tests, diluent of mixture of 400-600 mass multiple ratio has a remarkable inactivation effect on eubacterium fungi imperfecti sphaerotheca fuliginea powdery mildew and is good in sterilizing effect.

Description

[0001] Technical field: [0002] The invention relates to vegetable medicines, in particular to a method for using 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 leaves, b...

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 using a pharmaceutical