Organic fertilizer stack-type fermentation method with mushroom dreg as substrate

Abstract

The invention relates to the technical field of fertilizer fermentation and particularly relates to an organic fertilizer stack-type fermentation method with the mushroom dreg as a substrate. The method comprises the steps of (1) the preparation of fermentation raw materials; (2) pre-fermentation; (3) stack retting for fermentation; (4) crushing and screening; (5) subsequent decomposition and fermentation process. Based on the above method, the prepared organic fertilizer is high in decomposition degree, free of obvious odor, high in nutrient content, short in fermentation period, and convenient in operation process. The humification coefficient of the prepared organic fertilizer reaches over 80%, and the total nutrient content thereof is over 5.8%. However, the humification coefficient of an organic fertilizer prepared by the conventional fermentation method is only about 50%, and the total nutrient content thereof is smaller than 5.0%. Therefore, the prepared fertilizer is better in quality, and the fermentation period thereof is shortened by 30-35 days compared with the conventional fermentation method on the condition that the humification coefficients in the two methods are both 50%. As a result, the economic benefit is more obvious.

Description

Technical field [0001] The invention relates to the technical field of fertilizer fermentation, in particular to a stack-type fermentation method of organic fertilizer based on bacterial residue. Background technique [0002] China is a major producer of edible fungi. China’s annual output of edible fungi accounts for more than 70% of the world’s annual output. A large amount of edible fungi will be produced every year after harvesting. Most of the fungus residues are discarded or incinerated as waste, especially in In rural areas, the random stacking of waste fungus residue is serious, which easily causes environmental pollution and the spread of diseases. The disposal of waste fungus residue has become an urgent problem to be solved. [0003] Bacteria residue is the waste material of the culture medium remaining after the cultivation of edible fungi. The main components include cellulose, lignin, hemicellulose, bacterial protein, vitamins and mineral elements. At present, the co...

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Problems solved by technology

[0004] Chinese patent CN104788151A mixes fungus residue and cow dung to prepare compound organic fertilizer through two fermentations, which effectively solves the problem of full utilization of waste and organic fertilizer for crops; patent CN101412642B mixes edible fungus residue and livestock manure to prepare organic fertilizer , using the method of preparing original bacterial agent and fermentation bacterial agent for one-time fermentation treatment to produce organic fertilizer; patent CN1245356C uses edible fungus residue, livestock manure, etc. as raw materials, and uses two fermentation methods to prepare bio-organic fertilizer, which can kill a large number of Harmful bacteria and odor elimination, but there are too many sections in the tank fermentation tank, each section must strictly control the time, temperature and water content, and the production process is more complicated

[0005] Although the prior art has solved the problem of resource utilization and composting of fungus slag well, it has not mentioned the decomposing degree of organic fertilizer. The degree of decomposing is closely related to the quality of fertilizers. Therefore, there is an urgent need for an organic fertilizer fermentation method that can be deeply decomposed, has a simple preparation process, and has a short fermentation period.

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