Back Lida Yu, Shen Yu, Biaohu Cheng, Mei Lin and Zhengao Li
Research Institute of Citrus Science, Zhejiang Academy of Sciences, Huangyan, China
Full Paper (PDF File: 135KB)
Abstract
A series of living-refuse composts treated with EM are been carried out in an experimental period. Making of living-refuse composts, their pot experiments and field trails, and commercialization of products will be done in the following year. This paper presents some properties of EM living-refuse compost treated with different composting times, 7, 15 and 30 days, which were made in the laboratory. Results showed that EM could promote the decomposition of living-refuse, increase the concentrations of available nutrients such as N, P and K in composts, especially the available P with 1.0, 2.6 and 2.0 g P2O5 kg-1 accretions in EM7, EM15 and EM30 than that in the control, the natural living-refuse compost with 15 day heaping, respectively, and keep more organic carbon in compost, ranging from 35.2-75.7 g C kg-1, than in the control. Population of bacteria and fungi rapidly increased with heaping time in EM living-refuse composts. Bacteria grew more thriftily in EM15 and EM30 than in the control at near double size. Potential of hydrogen peroxidase tended to decline with heaping time but inversely, the urease activity was increased in EM composts and the activities of EM15 and EM30 were higher than that of control.