Key indicators of preparation for microbial compound fertilizer by chicken manure compost

With manual and mechanical equipment stack-turning,chicken manure and bacteria bran were as raw materials for preparation of mirobial compoud fertilizer.Key indicators change in process of high temperature composting fermentation were studied,which would provide an effective method for resource utilization of animal manure.The experiment results showed that: In the whole compost cycles,the change of organic matter content appeared the trend of gradual decline and temperature changes reached the maximum temperature 65 ℃ in a short time and kept the high temperature stage about 60 ℃ in 8-10 d,and then temperature droped.The nutrient test of the product at the former fermentation and after fermentation analysis showed that,the organic matter reduced from 46.0% to 41.2%,total nutrient remained basically unchanged but the total of phosphorus and total potassium increased slightly and water droped from 35.82% to 25.40%,which accorded with the national NY/T798—2004 Microbial Compound Fertilizer standards requirements.