Soil conditioner for preventing and treating tobacco bacterial wilt and increasing proportion of middle-first-class tobacco leaves and preparation method thereof

Abstract

The invention discloses a soil conditioner for preventing and treating tobacco bacterial wilt and increasing the proportion of middle-first-class tobacco leaves and a preparation method of the soil conditioner. The organic fertilizer comprises the following raw materials in parts by weight: 10-15 parts of decomposed seaweed, 10-15 parts of soybean meal, 5-10 parts of potassium humate, 10-15 parts of shell powder, 20-30 parts of livestock manure, 10-20 parts of fermented mushroom residues, 5-10 parts of distillers' grains, 5-20 parts of charcoal, 5-10 parts of waste tobacco shreds and 1-5 parts of auxiliary materials. The invention also provides a preparation method of the soil conditioner. The soil conditioner can regulate the pH value and other physicochemical properties of soil, improve the soil micro-ecology and improve rhizosphere microflora, so that the rhizosphere microenvironment is not beneficial to growth of bacterial wilt pathogenic bacteria, bacterial wilt is prevented and controlled from the source, the bacterial wilt morbidity of tobacco in the vigorous growth period, the topping period and the harvesting and baking period can be remarkably reduced, nutrient balance can be adjusted, and the tobacco quality is improved. The tobacco yield and the medium-first-class tobacco proportion are improved, and economic benefits are increased.

Description

technical field [0001] The invention belongs to the technical field of tobacco-specific fertilizers, in particular to a soil conditioner for preventing and treating tobacco bacterial wilt and increasing the proportion of medium and high-grade tobacco leaves. Background technique [0002] Tobacco bacterial wilt is a devastating soil-borne disease caused by Ralstonia solanacearum Smith, the pathogenic bacterium Ralstonia solanacearum, which has chemotaxis, motility and a wide host range, with initial onset The location is generally at the root, and it expands rapidly under suitable environmental conditions, which can result in reduced tobacco leaf production, reduced tobacco leaf quality, or even no harvest. The pathogen Ralstia solanacearum can survive in the environment for many years, and invades the host through micro-wounds in plant roots, causing plant leaves to wither and vascular bundles to rot and blacken, eventually leading to plant death. [0003] Tobacco bacteri...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a soil conditioner for preventing and treating tobacco bacterial wilt and increasing the proportion of middle and high-grade tobacco leaves and its preparation method, aiming to solve the problem of using chemical fungicides in the prior art to prevent and treat tobacco bacterial wilt. Large amount and low control effect will also cause pesticide residues, which will affect the quality of tobacco leaves and environmental safety.

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