平菇菌糠堆肥制备生物有机肥研究

以平菇菌糠和枯草芽孢杆菌为试验材料，进行60天的堆肥发酵，制备平菇菌糠生物有机肥。发酵过程中通过测定温度、pH、电导率、营养成分、C/N、腐植酸的含量变比，判断平菇菌糠有机肥的腐熟程度。结果表明，发酵后的平菇菌糠C/N为（15-20）：1、有机质质量分数46.31%、水分含量22.37%、酸碱度8.2、总养分4.70%、发芽指数81，均符合我国有机肥技术指标NY/T 525-2021的相关指标要求，可作有机肥用于农业生产。

Preparation of Bio-organic Fertilizer by Composting Mushroom Bran

Oyster mushroom bran and Bacillus subtilis were composted and fermented for 60 days to prepare oyster mushroom bran organic fertilizer. In the process of fermentation, temperature, pH, conductivity, nutrient composition, C/N, humic acid content ratio were measured to determine the degree of maturation of oyster mushroom bran organic fertilizer. The results showed that the bran C/N of oyster mushroom after fermentation was (15-20) : 1. Organic matter mass fraction 46.31%, moisture content 22.37%, pH 8.2, total nutrient 4.70% and germination index 81, all of which met the requirements of Chinese organic fertilizer technical index NY/T 525-2021, and could be used as organic fertilizer for agricultural production.