Journal of the Korea Organic Resources Recycling Association (유기물자원화)

Korea Organic Resources Recycling Association (유기성자원학회)
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Effects of pig manure composts with different composting periods on feeding rate, biomass and cocoon production of earthworm(Eisenia fetida)

돈분 퇴비의 부숙기간이 줄지렁이의 섭식률, 생체량 및 산란율에 미치는 영향

  • 배윤환 (대진대학교 생명과학과) ;
  • 박광일 (대진대학교 생명과학과)
  • Published : 2013.06.30
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Abstract

Effects of pig manure with various composting periods(0, 15, 30, 50, 80 days) on feeding rate, biomass, cocoon production of earthworm(Eisenia fetida) population and physicochemical property of vermicast produced from pig manure were investigated. The feeding rate of earthworm was increased with longer composting period of pig manure. But the biomass production of earthworm population was highest upon the pig manure composted for 30 days. Upon the pig manure composted for 80 days, the biomass was severely reduced. Cocoon production was decreased with longer composting period and especially lower on the pig manure composted for 80 days. Values of pH, EC, C/N ratio of vermicasts produced from pig manure composts were lower than those of pig manures. And the organic material contents of vermicasts were uniformly reduced irrespective of composting duration of pig manure, whose values were 35.9-39.8%. From these results, the optimum composting period of pig manure for vermicomposting could be 15-30 days. And the application of vermicomposting upon the composted pig manure could be an efficient way for the treatment of pig feces, which can stabilize and recycle the organic wastes more rapidly than the conventional composting method.

부숙기간(부숙 0일, 15일, 30일, 50일, 80일)이 다른 돈분퇴비에 대한 줄지렁이의 섭식량, 생체량, 산란율 및 돈분퇴비로부터 생산된 분변토의 이화학적 성상을 조사하였다. 돈분퇴비에 대한 지렁이 섭식량은 부숙 기간이 길어질수록 증가하였으나, 지렁이 생체량은 30일간 부숙된 돈분퇴비에서 가장 높았으며, 80일간 부숙된 돈분퇴비에서는 생체량이 현저하게 감소하였다. 지렁이의 산란수는 부숙이 진행된 먹이일수록 낮아지는 경향을 보였으며, 특히 80일간 부숙된 돈분퇴비에서 현저하게 낮았다. 부숙기간이 다른 돈분 퇴비로부터 생산된 분변토의 pH, 전기전도도, C/N율이 일반적인 퇴비화 공정보다 빠르게 감소되었으며, 생산된 분변토의 유기물 함량은 돈분퇴비의 부숙기간에 무관하게 35.9-39.8%으로 균질화되었다. 이상에서 지렁이의 처리효율, 생장률 등을 고려하였을 때, 돈분에 대한 지렁이처리를 위한 돈분퇴비의 부숙기간은 15-30일 정도가 적정한 것으로 판단된다. 그리고 일반적인 퇴비화와 지렁이 처리법의 혼합적용에 의해 돈분을 효과적으로 처리할 수 있을 뿐만 아니라 양질의 분변토와 지렁이를 생산할 수 있을 것으로 생각된다.

Keywords

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