Abstract: Through regulating the moisture and adding calcium superphosphate and lime, the effect of fermentation factors on composting temperature, moisture, pH, C/N and plant nutrient content etc. were studied in the maturity process of high temperature composting of chicken manure and sawdust. The results indicated that: the high temperature composting maintained a longer time, and lasted for 20 d over 50℃ in 53 days;the moisture and C/N ratio dropped, and the C/N ratio of different treatments had the range of decline differently, furthermore, the treatments that T value is less than 0.6 were treatment 4, 5 and 6;The pH value had a rise followed by a drop, and stayed stable at around 7.0 after 53 d ; Total phosphorus and available phosphorus was slowly rising, and the increase of treatment 5 was largest;Total potassium and available potassium had experienced from decrease to increase, and the content and the increase of treatment 5 was maximum. Taking all factors, material ratio of treatment 5 was more suitable for high temperature eomposting of chicken manure fermentation in this region.

Key words: Chicken manure, Sawdust, Composting, Material ratio

CLC Number: 

• S141.4