Application method of composition capable of resisting peronospora parasitica

Abstract

The invention discloses an application method of a composition capable of resisting peronospora parasitica. The application method comprises the following steps: A. preparing a stock solution, preparing the stock solution from the following components: 55% dimethorph wettable powder, a 30% water solution of monopotassium phosphate, a polyethylene glycol solution, phillyrin, chlorogenic acid, stachydrine, silica sol and calcium chloride; B. cultivating cabbages and selecting seeds without diseases; immersing sterile seeds with the stock solution with a 400-time volume ratio for 1.5-2 hours and taking out the seeds to be washed with clean water, and sowing the seeds; C. when plants are attacked by diseases, adding water into the stock solution to be diluted to a 600-time solution and carrying out spraying work; and D. adding the water into the stock solution to be diluted to a 500-time solution in a spraying process of the step C, and carrying out root irrigation operation. The application method disclosed by the invention is simple and the application method of the applied product is simple; the applied product has a simple ratio and is convenient to apply, and has good effect of treating cabbage peronospora parasitica; and a test verifies that a 400-600-time solution of the mixture has the very obvious deactivation effect on fungal imperfect fungi parasitic peronospora parasitica and has good sterilization effect.

Description

Technical field: [0001] The invention relates to vegetable medicines, in particular to a method for using a downy mildew resistant composition. Background technique: [0002] The parasitic peronospora mainly harms Chinese cabbage. The mycelium is colorless and without septum. It grows between the silk cells and absorbs water and nutrients through the haustoria. The haustoria is sac-shaped, spherical or bifurcated. During vegetative reproduction, cyst peduncles are produced from the hyphae, protruding from the stomata, colorless, without septa, solitary or in bundles of 2-4 roots, 260-300 μm long, the base of the main branch is slightly enlarged, repeating bifurcations Branches, with 2-5 sub-branches at the top, the main axis and branches are at an acute angle, the peduncles at the top are sharp and curved, and a sporangia grows at each end. Sporangia are colorless, unicellular, oblong to oval, 24~27×15~20μm, germ tubes are usually produced from the side during germination...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the drug resistance problem caused by downy mildew of cabbage at present, the present invention provides a kind of anti-frost agent which is simple in use method, simple in use method of the product used, simple in proportion of the product used, convenient in use and good in treating downy mildew of cabbage How to use the composition of mold