Application method of disease-resistant medicine for treating cucumber powdery mildew

Abstract

The invention discloses an application method of a disease-resistant medicine for treating cucumber powdery mildew, comprising the following steps: A, a stock solution is prepared: components of the stock solution comprise 27% high-fat membrane, 2% pyrimidine nucleoside agricultural antibiotic, garlic extract, astragalus polysaccharide, baicalein, polyoxin, root of Chinese pulsatilla and dryopteris crasirhitom nakai; B, water is added to the stock solution to prepare a diluents which accounts for 400-600 times the mass of the stock solution; C, use dosage per mu is 3.5-4kg; the medicine is sprayed uniformly; front and back sides of a leaf are sprayed uniformly; the key point is to spray sick leaves; and upper healthy leaves are sprayed for protection; D, a fertilizer is applied within three days after spraying so as to prevent shortage of fertilizer and early aging and enhance disease resistance of plants; after fertilization, watering is not carried out at cloudy days and fresh air is blown in at sunny days; relative humidity in a greenhouse or shed is reduced, excess temperature is prevented, and stuffiness is avoided; and E, within three days after spraying, sulphur is used for smoking, and smoking is carried out in the shed for 10 min every day. The medicine 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 method for using a disease-resistant medicine for cucumber 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, but the le...