Method for radically treating apple cankers by microorganism pythium oligadrum

Abstract

The invention relates to a method for radically treating apple cankers by microorganism pythium oligadrum; the method comprises the following steps: (1) first, cleaning a tree trunk and tree branches with apple cankers by clean water so as to remove germs and dust attached to the surfaces of the tree trunk and the tree branches; (2) preparing a biocontrol bacterium liquid: pouring a pythium oligadrum bactericide into a container filled with a small amount of clean water; dipping and appropriately stirring the pythium oligadrum bactericide; pouring out supernatant after about 30 minutes; continuing to add clean water to dilute the supernatant; after the supernatant is diluted, adding an appropriate amount of plant nutrition regulators, white sugars, ureas and organic silicon additives to the diluted supernatant; sufficiently stirring the supernatant so as to obtain the uniform biocontrol bacterium liquid; and (3) after the surfaces of the tree trunk and the tree branches are dried, uniformly spraying or coating the biocontrol bacterium liquid on the tree trunk and the tree branches. Through directly spraying clean water on the tree trunk and the tree branches to clean the tree trunk and the tree branches and then spraying and coating the microorganism pythium oligadrum bactericide on the tree trunk and the tree branches to kill germs, the method for radically treating the apple cankers by the microorganism pythium oligadrum, provided by the invention, has the advantages of simplicity, convenience, easiness, enduring effect, no influence on tree vigor, safety and environment friendliness and is suitable for sustainable production of pollution-free, green and organic apples.

Description

technical field [0001] The invention relates to the field of plant protection, in particular to a simple and effective method for radically curing apple rot by utilizing the microorganism Pythium oligandrum. Background technique [0002] Apple rot disease, commonly known as rotten skin disease and stinky skin disease, is an important disease of apple trees in northern China, and it is common in North China, Northeast China, and Northwest China. It mainly damages fruiting trees that are more than 6 years old, causing tree vigor to weaken, branches to die, dead trees, and even damage to the garden. The diseased strain rate of large trees is generally 20% to 30%, and the diseased strain rate of seriously diseased gardens is over 80%. It affects apples. devastating disease of production. The main symptoms of the disease are large reddish-brown, water-stained, slightly elevated necrotic plaques on the bark of the trunk and branches of the apple tree. In the later stage, the dis...

AI Technical Summary

Problems solved by technology

[0005] ①The traditional control method is to scrape the skin from October to December every year or from March to April of the next year. It is not the period of disease occurrence. It is just to remove the diseased tissues of the trunk and branches that were infected in the current year or the previous year. The bacteria of the disease have not been targetedly controlled;

[0006] ②The traditional method of treating rot disease is to scrape the bark and then apply medicine, focusing on the rot spots. The rot bacteria hidden in the healthy bark have not been treated, so the rot disease has not been cured;

[0007] ③The traditional skin scraping prevention method is very labor-intensive, not only the efficiency is very low, the high branches are inconvenient to operate or even impossible to implement, there are prevention and control omissions, the overall effect is poor, and it is impossible to achieve a radical cure;

[0008] ④After the bark is scraped, the tree body cannot transport water and nutrients normally. The bark part is exposed all the year round and is vulnerable to external bad weather. The water inside the trunk is easy to lose from the diseased part. Severely damaged vigor, eventually leading to necrosis and dryness of the whole plant