Method for producing tobacco float breeding medium from distillers' grains and tobacco float breeding medium

Abstract

The invention discloses a method for producing a tobacco float breeding medium from distillers' grains and the tobacco float breeding medium. The tobacco float breeding medium is prepared by fermenting and drying distillers' grains and mushroom residues in air, subsequently making into particles that the particle size is less than or equal to 4mm, adding carbonized rice hull that the particle size is less than or equal to 4mm and willow leaves that the particle size is less than or equal to 4mm, and uniformly mixing by using a stirrer. The tobacco float breeding medium comprises the following solid components in percentage by volume: 30-40% of distillers' grains, 20-30% of mushroom residues, 20-30% of carbonized rice hull (soaked in a 0.02% salicylic acid solution, and dried in air), and 10% of rotten willow leaves. The preparation method is simple, the raw materials are wide and centralized in resource, circular using of resources is achieved, the production equipment is simple, and the production process is environment-friendly. The medium produced by using the method is high in water-retaining property and good in air permeability, can inhibit algae breeding, induce low temperature resistance and disease resistance of tobacco seedlings, is small in medium residue and is not scattered when the tobacco seedlings are dissociated from discs.

Description

technical field [0001] The invention relates to a method for producing tobacco floating seedling-raising substrates by using distiller's grains and the tobacco floating seedling-raising substrates, and belongs to the technical field of producing organic seedling-raising substrates by using industrial and agricultural wastes. Background technique [0002] The main methods of growing flue-cured tobacco seedlings include nutrition bag seedlings, tray seedlings, floating seedlings, etc., all of which require seedling substrates. At present, the main raw materials of the substrate are peat, expanded perlite, vermiculite, etc., among which peat is the main component of almost all commercial tobacco seedling cultivation substrates. As a cultivation matrix component, peat has the advantages of rich nutrients, loose structure, good water retention and air permeability, etc., but there are many problems at the same time. First, peat is mainly produced in wetlands, and it takes a long ...

AI Technical Summary

Problems solved by technology

[0004] Distiller's grains are the leftovers of brewing enterprises. It is the grain residue left after fermentation and distillation of rice, barley, buckwheat, sorghum and other raw materials. It is very rich in nutrients. However, due to the high acidity of distiller's grains, it is easy to spoil and deteriorate. Long-term stacking will inevitably pollute the environment.

At present, more than 50 million tons of distiller's grains need to be processed in China, which has become a waste that is difficult to handle in winemaking. Many brewing companies even arrange special funds to dispose of distiller's grains, and the disposal methods are relatively simple, such as landfilling or open-air stacking in garbage dumps. Not only waste resources, but also pollute the environment

Mushroom dregs are solid wastes left after producing edible fungi with cottonseed husks, corncobs, and crop stalks. The output is also very large. The current treatment and utilization methods are relatively simple and extensive, and often cause environmental pollution.

A search found that using distiller's grains, mushroom dregs, carbonized rice husk and willow leaves as the main raw materials, and compounding a small amount of salicylic acid to produce tobacco-specific floating seedling substrates has not been reported in China.

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