Method for preparing biopesticide tetramycin and application

Abstract

The invention discloses a method for preparing biopesticide tetramycin from Streptomyces ahygroscopicus subsp.Wuzhouensis n.subsp, and application of a product prepared by the method in preventing and controlling diseases such as apple alternaria leaf spots and the like. The tetramycin prepared by the method improves the biological potency of the tetramycin (the biological potency of fermentation liquor is improved by 15.5 percent after 0.3 to 0.5 percent of normal propyl alcohol is added.), can prolong the quality guarantee period, improves the effect of preventing and controlling apple canker to over 95 percent, has good effect of preventing and controlling the diseases such as the apple alternaria leaf spots, tomato gray mold and the like, has effect of inhibiting yeast, gram-negative and gram positive bacteria, fungi (comprising fungal pathogens) and the like, has wide adaptability, and belongs to the environment-friendly biopesticide.

Description

technical field

[0001] The invention relates to an improved preparation method of Wuningmycin, a biopesticide produced by Streptomyces ahygroscopicus subsp. Wuzhouensis n.subsp, and the application of the product in preventing and treating apple leaf spot disease. Background technique

[0002] my country is a large agricultural country, with more than 100 million hectares of grain crops, more than 4.8 million hectares of cotton, more than 14 million hectares of oil crops, and more than 18 million hectares of vegetables and fruits. For a long time, people have used a lot of chemical pesticides to prevent and control plant diseases and insect pests. The use of chemical pesticides plays an effective role in ensuring the normal production of crops, but with the long-term use of a large number of chemical pesticides, it has caused serious damage to the ecological environment, such as soil structure damage, reduced enzyme activity in the soil, serious pollution of soil and water, e...

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