Cold area wheat straw decomposing fungus Penicillium erythrogenes strain and its fermentation culture method and application

The technology of fermentation culture and fermentation medium is applied in the field of separation and application of straw decomposing fungi in cold regions, and can solve the problems of waste of crop resources, environmental pollution, conditions for returning fields and low degree of promotion.

Active Publication Date: 2021-09-03
NORTHEAST AGRICULTURAL UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Wheat is the main food crop in my country, and a huge amount of straw is produced every year. In winter, due to the low ambient temperature, low return conditions and low promotion degree, many straws are burned or discarded, which not only wastes valuable crop resources, but also harms the The environment has caused huge pollution

Method used

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  • Cold area wheat straw decomposing fungus Penicillium erythrogenes strain and its fermentation culture method and application
  • Cold area wheat straw decomposing fungus Penicillium erythrogenes strain and its fermentation culture method and application
  • Cold area wheat straw decomposing fungus Penicillium erythrogenes strain and its fermentation culture method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Example 1 Isolation and identification of straw-decomposing fungi in cold regions

[0042] 1. Test materials and methods

[0043] 1.1 Test material

[0044] The EM bacteria liquid used in this experiment was provided by Heilongjiang Academy of Agricultural Sciences. Wheat straw was collected from the experimental field of Northeast Agricultural University.

[0045] 1.2 Test method

[0046] 1.2.1 Decomposition of straw by EM bacteria in cold regions

[0047] In December 2016, in the experimental field of Northeast Agricultural University in Harbin, Heilongjiang Province, the outdoor temperature was between minus 12°C and 25°C. The mixture of crushed wheat straw and EM bacteria solution was buried in a deep ditch, and covered with untreated straw and plastic cloth. , decomposed and decomposed for 60d. The decomposed straws taken out were in a rotten state, and occasionally strips or small fragments of incompletely decomposed straw fragments were seen.

[0048] 1.2.2...

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Abstract

The invention discloses a strain of Penicillium erythrogenes, a wheat straw decomposing fungus in a cold region, a fermentation and cultivation method and an application thereof, and belongs to the field of separation, preparation and application of a straw decomposing fungus in a cold region. The invention firstly discloses an isolated Penicillium rubens-F1 strain, and its microorganism preservation number is: CGMCC No.15100. The Penicillium rubens-F1 strain isolated by the present invention can grow at different temperatures, and still has vigorous growth under low temperature conditions. The present invention further optimizes the relevant parameters of the fermentation preparation method of the isolated fungal strains. The isolated fungal strain of the present invention can efficiently ferment straw under low temperature conditions, and can be used alone or in combination with EM bacteria to ferment straw; after mixing the fermentation liquid of the strain of the present invention with the EM bacterial liquid, ferment wheat straw at low temperature for 25 Days, the straw fermentation effect was significantly improved, and the fermentation rate increased by 43.9%.

Description

technical field [0001] The invention relates to an isolated wheat straw decomposing fungus strain in cold regions, and also relates to the application of the cold region straw decomposing fungal strains in high-efficiency fermentation of wheat straw at low temperature, and belongs to the field of separation and application of cold region straw decomposing fungi. Background technique [0002] Wheat straw is rich in nutrients such as cellulose, hemicellulose, lignin, protein and mineral elements, and is a renewable biological resource. Wheat is the main food crop in my country, and a huge amount of straw is produced every year. In winter, due to the low ambient temperature, low return conditions and low promotion degree, many straws are burned or discarded, which not only wastes valuable crop resources, but also harms the The environment has caused huge pollution. Straw is mainly rich in cellulose, hemicellulose and lignin, and many fungi, bacteria and actinomycetes can secret...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12N1/14C05F15/00C05F11/08C05F17/20C12R1/80
CPCC05F11/00C05F11/08C05F17/00C12N1/14C12N1/145C12R2001/80Y02W30/40
Inventor 李凤兰冯艳忠冯哲王丽娟杨秀梅徐永清袁强
Owner NORTHEAST AGRICULTURAL UNIVERSITY
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