논토양의 Indole Acetic Acid 생성능

This study was conducted to evaluate the indole acetic acid (IAA) formation in soils as a biological indicator for the health of rice paddy soils with control, nitrogen sole, chemical fertilizer (NPK), and chemical fertilizer plus compost (CNPK) plots. There was a positive relationship between color...

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Veröffentlicht in:韓國土壤肥料學會誌 2006, 39(6), , pp.386-391
Hauptverfasser: 서장선(Jang-Sun Suh), 노형준(Hyung-Jun Noh), 최수임(Soo-Im Choi)
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Sprache:kor
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Zusammenfassung:This study was conducted to evaluate the indole acetic acid (IAA) formation in soils as a biological indicator for the health of rice paddy soils with control, nitrogen sole, chemical fertilizer (NPK), and chemical fertilizer plus compost (CNPK) plots. There was a positive relationship between colorimetric method and high performance liquid chromatography for IAA in soils determined, and the values were similar between two methods, as $0.83{\sim}1.23{\mu}g\;IAA\;g^{-1}h^{-1}$ in colorimetric method, $0.80{\sim}1.29{\mu}g\;IAA\;g^{-1}h^{-1}$ in HPLC method. Numbers of dehydrogenase-producing bacteria and the IAA production in soils were high in NPK and CNPK plots comparing with control and nitrogen sole plots. Also there was high correlation between numbers of dehydrogenase-producing bacteria and IAA production in soils. 본 연구는 생물학적 토양건전성평가 지표로서의 토양의 탈수소효소 생성균 밀도와 IAA생성능의 적용 가능성을 살펴보고자, 무시용구, 질소 단용구, 3요소 시용구 및 퇴비 3요소 시용구로 처리된 논토양에서의 탈수소효소 생성균 및 토양의 IAA 생성능의 변화에 대해 조사하였다. 비색법과 HPLC법 간의 IAA분석치는 유의성 있는 정의 상관관계가 있었으며, 시험토양의 IAA생성량은 비색법 $0.83{\sim}1.23{\mu}g\;IAA\;g^{-1}h^{-1}$, HPLC법 $0.80{\sim}1.29{\mu}g\;IAA\;g^{-1}h^{-1}$로 분석법 간에 거의 비슷한 수준을 보였다. 탈수소효소생성 토양세균과 토양의 IAA생성능은 대조구와 N 단용구에 비해 NPK구 및 CNPK구에서 유의적으로 높은 결과를 보였으며, 탈수소효소 생성세균과 토양의 IAA 생성능 간에는 유의성이 높은 정의 상관관계를 보였다.
ISSN:0367-6315
2288-2162