Radix isatidis dreg bio-organic fertilizer suitable for radix glehniae and preparation method thereof

The invention relates to a traditional Chinese medicine waste residue bio-organic fertilizer suitable for radix glehniae and a preparation method thereof. The organic fertilizer is prepared from the following components in parts by weight: 12-17 parts of radix isatidis dregs, 50-55 parts of cow dung, 14-18 parts of plant ash, 15-20 parts of rice hull powder, 1-2 parts of calcium superphosphate, 0.5-1 part of a microbial agent, 2-4 parts of urea and 3-4 parts of poly gamma-glutamic acid. The process comprises the following steps of: well stirring and mixing the raw materials, adjusting the C/N ratio to be 30: 1 by using urea, then adding the microbial agent into the fermented product, mixing and stirring, composting and retting, and adding the poly gamma-glutamic acid after the fermentation is completed. According to the bio-organic fertilizer especially suitable for radix glehniae, the radix isatidis dregs, the cow dung, the rice hull powder and the like are processed into the organic fertilizer which is appl