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Chinese Journal of Applied Ecology ›› 2002, Vol. ›› Issue (11): 1459-1462.

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HUANG Guofeng1,2, ZHONG Liuju1, ZHANG Zhentian1, WU Qitang 2   

  1. 1. Institute of Environmental Science Guongdong Province, Guangzhou 510045;
    2. College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642
  • Received:2001-04-28 Revised:2001-09-07 Online:2002-11-15

Abstract: The contents of T-N, the ratios of soluble NO3-N/soluble T-N and soluble organic N/soluble T-N increased after co composting for 63 days of pig manure and sawdust with or without additional leaves, while the ratios of soluble NH4-N/soluble T-N decreased. In this study, addition of leaves was beneficial for maturation of pig manure composting, and it could shorten the composting time from 42d to 35d.The ratios of soluble NH4-N/soluble T-N,soluble NO3-N/soluble T-N and soluble organic N/soluble T-N correlated with seed germination index (GI) significantly, and it could be used for maturity evaluation.

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