Composite lactobacillus agent for improving grape quality and preparation method of composite lactobacillus agent

Abstract

The invention provides a composite lactobacillus agent for improving grape quality and a preparation method of the composite lactobacillus agent, and belongs to the field of application of microorganisms. The composite lactobacillus agent consists of Lactobacillus plantarum P-8, Lactobacillus casei Zhang and Lactobacillus delbrueckii subsp.bulgaricus in a ratio of (1.5-2):(1.5-2):(1-1.5); the total viable count of the composite lactobacillus agent is 2.4-3.2*10<9>cfu / ml. Compounding of the three types of bacteria has a significant effect of promoting growth and metabolism of grapes, and particularly can synergistically increase the total soluble sugar content and the soluble solid content of the grapes, so that the grape quality is improved and planting benefits are enhanced.

Description

technical field [0001] The invention relates to the field of microbial application, in particular to a compound lactic acid bacteria agent for improving grape quality and a preparation method thereof. Background technique [0002] At present, nearly half of the countries in the world, including major developed countries such as Japan, the United Kingdom, the United States, France, and Sweden, and developing countries such as Pakistan, India, and China, are developing and utilizing microbial fertilizers. Yao Guoqiang screened out strains that inhibit pathogenic fungi through preliminary experiments, and obtained lactic acid bacteria and their metabolites through low-temperature and long-term mixed fermentation. Yu Xiangrong and others screened the fermentation liquid of three strains of lactic acid bacteria with good antibacterial effect and wide antibacterial spectrum, which have good control effects on Guifei rose downy mildew, Meile anthracnose and Fujiminori white rot. T...

AI Technical Summary

Problems solved by technology

[0004] At present, the methods to increase grape yield are mainly planting techniques such as selecting suitable varieties, strengthening water and fertilizer management, and preventing and controlling diseases and insect pests. According to the growth characteristics of grapes and the needs of commodity traits, the application of different fertilizers is a necessary condition for high-yield and high-quality grapes. Research on different fertilizer amounts The results show that the higher the amount of fertilization, the higher the grape yield, but the sugar content is not necessarily high, and it also increases the cost of fertilization and reduces the input-output ratio.

And long-term application of chemical fertilizers will not only cause pollution and damage to the environment, but also cause land compaction, soil fertility and quality decline, and crop yield reduction, etc.

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