Mixed agent for preventing and controlling tobacco soil-borne diseases and its application method

Abstract

The invention provides a mixture used for the prevention and treatment of tobacco soil-borne diseases and its use method. The main components of the mixture are: 5-15 parts of rhodiola root extract, 10-20 parts of marigold root extract, Coptis chinensis Root extract 15‑35 parts; 95% alcohol 50 parts. Use of the mixture: (1) Before sowing tobacco, prepare a solution of the above mixture and water at a ratio of 1:10, spray evenly on the seedling substrate, spray 0.1-0.15 L per kilogram of substrate, and mix well. Then sow normally, and after the growth of the tobacco seedlings reaches the standard, transplant them in the field. (2) When transplanting tobacco in the field, the above mixture and water are prepared into a solution at a ratio of 1:400-600, and poured into the seedling holes where the tobacco seedlings are transplanted, and each seedling hole is filled with 40-60 ml. The invention has the characteristics of wide sterilizing range, long-lasting drug effect, non-toxic safety and the like, significantly reduces the occurrence rate of tobacco soil-borne diseases, and improves the quality of tobacco leaves.

Description

technical field [0001] The invention belongs to the technical field of biological control of plant diseases, and in particular relates to a mixture used for preventing and controlling tobacco soil-borne diseases and a use method thereof. Background technique [0002] Tobacco is one of the important economic crops in my country, and it is also one of the crops most seriously damaged by diseases. Among the many tobacco diseases, the losses caused by soil-borne diseases are the most serious. Tobacco soil-borne diseases mainly include bacterial wilt, black shank, root black rot, etc. Tobacco bacterial wilt is a bacterial soil-borne disease caused by the parasitism of Ralstonia solanacearum. Tube bundle diseases; tobacco black shank and root black rot are fungal diseases caused by Phytophtora parasitica var. The resulting economic losses amounted to more than 100 million yuan. Tobacco soil-borne diseases are ubiquitous in many tobacco-growing areas in my country, and often occ...

AI Technical Summary

Problems solved by technology

Traditional chemical control methods have the characteristics of less dosage and quick results. However, during the use of chemical pesticides, they have had serious negative impacts on humans and the ecological environment, not only causing excessive residues of harmful substances, destroying soil ecology, but also causing A series of problems such as human and animal poisoning and increased resistance of bacteria

Although the use of microbial control overcomes the above-mentioned disadvantages of chemical control, and research and practice have proved that it has a certain control effect on tobacco soil-borne diseases, the effect of microbial control is generally slow, and the effective active ingredients are relatively complex, which is easily affected by environmental factors. Constraints and interference

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