돈분에 왕겨 혼합 수준이 지렁이 퇴비화에 미치는 영향

다국어 초록 (Multilingual Abstract)

he present study was conducted to provide basic data for efficient vermicomposting of swine manure by investigatingthe effect of rice hull mix on growth and reproduction of earthworms, amount of earthworm cast produced, and its chemicalcomposition when mixing swine manure in different levels (0 (SRH0), 10 (SRH10), 20 (SRH20), 30 (SRH30), and 40%(SRH40)) with rice hull commonly used as a bulking agent for facilitation in manure composting. The C/N ratio of thefeed was 10.19-13.95 and increased with higher level of rice hull mixed, and the survival rate of earthworms during theexperiment period was 35.2-99.2%. The biomass growth rate of earthworms was significantly higher in the SRH30 andSRH40 treatments than others (p<0.05), and young worms were not found in any treatments, but the number of cocoonswas 7.4 in the SRH40 treatment. The production of earthworm cast and digested amount were higher with the higherlevel of mixed rice hull (p<0.05), and the C/N ratio of cast increased with the mixed rice hull ratio, being significantlyhigher ratio in SRH40 than other treatments (p<0.05). Among heavy metals, the copper content tended to decrease withthe mixed rice hull level. To summarize, the higher level of mixed rice hull was associated with improvement in growth,reproduction, and cast production of earthworms, and 30-40% rice hull mix in particular could result in efficientvermicomposting.

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