A kind of medicament for preparing and preventing walnut rot and its application

Abstract

The invention discloses a medicament for preparing and preventing walnut rot and its application. By selecting 35-45 parts of wood tar, 15-30 parts of wood vinegar, 8-14 parts of total alkaloids of Sophora sophora, 2-8 parts of isoflavone lignans, 4-10 parts of astragalus, and 10-20 parts of surfactants Combining with the physical method of sawing off diseased branches, scraping off diseased spots, and spraying walnut orchards with diluents, the amount of pesticides used can be greatly reduced. No chemical pesticides are added to the control agents, no pollution, and low cost. Low, and the wound surface of physical control treatment is small, and the agent can penetrate deep into the xylem, so that the internal and external pathogens can fully contact with the agent, which is conducive to the exertion of the drug effect, and has a significant effect on the prevention and treatment of walnut rot disease, which has the value of popularization and application.

Description

technical field [0001] The invention relates to the field of prevention and control of fruit tree diseases and insect pests, in particular to the technical field of preparing a medicament for preventing and treating walnut rot and its application. Background technique [0002] Walnut (Juglans regia L.) is an important woody oil tree species with high economic, ecological and social benefits. In recent years, with the country's strong support for the woody oil industry, the market demand has gradually increased, and the cultivation area of ​​walnut has continued to expand. Walnut rot is a kind of branch disease caused by pathogenic fungi. The pathogenic fungi overwinter in the diseased part as mycelium or pycnidia, and produce conidia in the next year, which are spread by wind, rain and insects. Spring and autumn It is the peak period of the disease, when the air humidity is high, a large number of conidia are produced, and multiple infestation hazards are carried out. The di...

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Problems solved by technology

Chemical pesticide control is a method with a high rate of use in the control of walnut rot disease. Common fungicides are usually used in combination with corresponding antibiotics for comprehensive control. Commonly used are octoprobin, agricultural streptomycin, thiophanate-methyl, and high-concentration caustic soda However, after the use of chemical pesticides, traces of pesticide original bodies and toxic metabolites remaining in organisms, agricultural by-products, and the environment pollute the environment; physical methods of prevention and control are mainly through pruning and scraping the diseased spots, and completely scraping the diseased spots This method of prevention and treatment will damage the phloem and xylem of the trunk, affect the nutrient transport of the tree, and may further reduce the tree vigor and cause secondary infection of rot pathogens. This method is suitable for small diseased spots, young tree age, and relatively vigorous tree vigor The use of walnut trees at the early fruit stage is not suitable for the full fruit stage and old and weak trees; biological control uses the antagonism between microorganisms to achieve comprehensive control of pathogenic bacteria, but the cost is relatively high

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