Special culture medium for blueberry and production process thereof

Abstract

The invention provides a special culture medium for a blueberry and a production process thereof, belonging to the technical field of crop cultivation. According to the invention, vinegar residues are used as a main material, 1 to 5% of urea is added to adjust a carbon-nitrogen ratio to 25: 1 to 20: 1; 0.1 to 0.5% of a composite microbial strain is added; after completion of microbial fermentation and decomposition, the pH value of a material is 6.7 to 6.9 and is adjusted to 4.5 to 5.0 by using tail vinegar; and a finished product procedure is carried out so as to prepare the special culture medium for the blueberry. The special culture medium for the blueberry is an acidic granular medium containing no less than 60% of organic matters, 4.0 to 4.5% of total nutrients, 30 to 35% of moisture content, a soluble ion concentration EC value of 1 to 2 mS / cm, 22 to 25% (V) of ventilation porosity and 44 to 46% (V) of water-retention porosity. Test results show that the special culture medium for the blueberry is used for blueberry cultivation and has better effect than a turf medium. According to the invention, the waste is turned into the valuable; exploitation of the resource of turf is reduced; and the environment is protected.

Description

technical field [0001] The invention belongs to the technical field of crop cultivation, and is a special cultivation substrate for economic fruit blueberries and a production process thereof, in particular to a special cultivation substrate for blueberries produced by utilizing vinegar grains through microbial fermentation and transformation and a production method thereof. Background technique [0002] Vinegar grains are the main by-products of vinegar making, accounting for about 70-80% of the raw materials for making vinegar. It is composed of rice husks fermented by vinegar making, a small amount of bran and rice wine dregs, with an organic matter content of about 90%, a nitrogen content of about 2.5%, and a total calcium, phosphorus, and potassium content of 0.6-0.75%. It is an organic waste with high cellulose and lignin content, high acidity at pH 4.5-5.5, and difficult to handle. Due to its large quantity, high fiber content and high acidity, it is easy to cause en...

AI Technical Summary

Problems solved by technology

However, in the actual large-scale industrial production, the plant ash auxiliary materials used mainly come from straw incineration power plants. In the process of straw incineration, in order to support combustion, additional combustion aids such as pulverized coal and diesel oil need to be added. The EC value of the plant ash produced in this way is very low. High, often around 14mS / cm, so even adding 8-10% plant ash will make the EC value of the final substrate product high, generally around 3.6mS / cm, and the product has a potential risk of burning seedlings when used in agricultural production

[0005] At the same time, it is relatively simple to add bacteria in the literature, which leads to incomplete fermentation of the material, and the pH value after fermentation is still low (pH5.5-6.5). If the material is fully fermented, the microbial flora can fully metabolize and utilize the organic acid components in the material, and the fermentation is over. The pH value of the material should be close to neutral (pH7.0)