Soil Physicochemical Properties by applied with Mixed Ratio Soldier Fly (Hermetia illucens) Casts

동애등애 분변토의 혼합비율에 따른 토양이화학적 특성

  • Received : 2011.04.23
  • Accepted : 2011.05.20
  • Published : 2011.06.30

Abstract

This study was conducted to investigate the effect of the mixture ratio of a soldier fly casts (SFC), compost and cocopeat on the soil physicochemical properties. The mixture ratios of soil amendment were 0%, 3%, 5%, 7% and 10% (V/V) incorporated with sand which met to the USGA particle standard. To analyze the effects of amendments on soil chemical properties, pH and EC were measured. The porosity, capillary porosity, air-filled porosity, bulk density and hydraulic conductivity also measured to analyze the physical properties. Chemical properties were significantly different by mixture ratios of a SFC, compost and cocopeat. Capillary porosity was a factor involved in soil physical properties by blending with a SFC and compost. It was affected on the volume of porosity or hydraulic conductivity. To analyze the correlation of mixture ratio versus to physical characters, the ratios of SFC were significantly different in capillary porosity, air-filled porosity, and hydraulic conductivity. These results indicated that mixing ratios of SFC were affected on soil physicochemical properties such as porosity and hydraulic conductivity of the root zone on the USGA sand green.

본 연구는 아메리카동애등애 사육과정에서 발생한 분변토(SFC)가 골프장의 토양개량제로서 사용가능성을 평가하기 위해 모래와 혼합비율별 물리화학성을 조사하고자 한다. 토양개량제의 혼합비율에 따라 상토의 물리화학성을 조사한 결과는 다음과 같다. SFC, compost 및 cocopeat는 pH와 EC에서 고도의 정의 상관성 (P<0.01)을 나타내어 토양개량제의 특성에 따라 상토의 토양화학성에 영향을 주었다. SFC와 compost의 혼합에 따른 토양물리성 변화에서 가장 중요한 요인은 모세관공극으로 총공극이나 수리전도도의 변화에 영향을 미쳤다. 토양개량제의 혼합비율에 따른 토양개선효과를 비교할 때, SFC는 모세관공극, 총공극 및 수리전도도에서, compost는 모세관공극, 비모세관공극, 총공극 및 수리전도도에서, cocopeat는 모세관공극과 비모세관공극에서 고도의 상판성을 나타내었다(P<0.05). 이들 결과를 통해 토양개량제의 종류와 특성 및 혼합비율이 USGA 상토의 근권층 개량과 토양 이화학성에 영향을 미치고 있음을 알 수 있으며, 본 실험조건에서는 SFC는 상토의 공극과 수리전도도의 개선효과를 보였다.

Keywords

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