Journal of Ecology and Rural Environment ›› 2015, Vol. 31 ›› Issue (3): 420-424.doi: 10.11934/j.issn.1673-4831.2015.03.023

• muci • Previous Articles     Next Articles

High-Temperature Composting of Mixtures of Chicken Manure and Coconut Husk Different in C/N Ratio

DONG  Cun-Ming, ZHANG  Man, DENG  Xiao-Ken, QIN  Hai-Li, ZHAO  Yan, LIU  Xiao-Yu, RUAN  Yun-Ze   

  1. College of Agronomy,Hainan University
  • Received:2014-10-27 Revised:2015-03-31 Online:2015-05-25 Published:2015-09-22
  • Contact: RUAN Yun-Ze College of Agronomy,Hainan University E-mail:ruanyunze1974@hainu.edu.cn

Abstract: In high-temperature composting experiments, mixture of chicken manure and coconut husk wasused as basic raw material. The experiments were designed to explore effect of C/N ratio, controlled by regulating proportions of chicken manure and coconut husk in the mixture, on some physical-chemical indices of the material under composting, i.e., temperature, pH, C/N and total nutrients, in an attempt to find the most proper C/N ratio of the raw material for high-temperature composting. Results show that when the mixture was 25 in initial C/N an, reached as high as 57℃during 14 days of composting, the composts in all the treatments showed declining trends in C/N and contents of organic matter and TC; but in pH, they went up in the first 8 days and down toward the end of the composting; TN and IG (seed germination index) increased during the process. At the end of composting, Treatments F1 (20 in initial C/N ratio), Treatment F2 (25 in initial C/N ratio) and Treatment F3 (30 in initial C/N ratio) was 11.13, 11.19 and 10.24, respectively, lower in C/N ratio; 7.94%, 8.63% and 8.29%, respectively, in content of total nutrient and 77.90%, 100.65% and 93.30%, respectively in IG.

Key words: chicken manure, coconut husk, C/N, composting

CLC Number: