경남지역의 토양 및 농작물중 게르마늄 함량
Germanium Contents of Soil and Crops in Gyeongnam Province
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양질의 기능성 농산물 생산을 위하여 게르마늄의 농업적 이용에 대한 기초 자료를 제공하고자 경남지역의 토양을 중심으로 지역, 지형, 토양유형 및 토성별 게르마늄 함량과 자연상태에서 재배한 농작물별 게르마늄 함량을 조사하여 그 분포특성을 검토한 결과는 다음과 같다.토양중 게르마늄 함량을 분석한 결과 경남지역 논 토양 평균 함량은 0.24 mg/kg 이었고, 마산시, 진주시 및 하동군 지역이 0.30 mg/kg 이상으로 높았다. 지형별로는 홍적대지가 0.26 mg/kg으로 약간 높았으나 지형에 따른 큰 차이는 없었다. 토양유형별 게르마늄 함량은 보통답이 0.27 mg/kg으로 사질답과 습답에 비하여 높았으며, 토성별로는 미사질양토가 0.27 mg/kg으로 비교적 높았다.일반농작물중 게르마늄 함량은 곡류>채소류>과일류 순으로 높았고, 쌀과 보리는 각각 약 68 및 48 ㎍/kg의 게르마늄을 함유하고 있었으며, 단감과 배는 각각 약 11 및 23 ㎍/kg으로 전반적으로 낮은 수준이었다. 채소류중 게르마늄 함량은 엽채류>근채류>과채류 순으로 높았으며 특히 상추와 열무중 게르마늄 함량이 각각 약 62 및 65 ㎍/kg으로서 높았다. 약용작물중 게르마늄 함량은 신선초(Angelica keiskei), 토천궁(Ligusticum chuanxiong), 인삼(Panax ginseng), 삽주(Atractylodes macrocephala), 백지(Angelica dahurica), 맥문동(Liriope platyphy- lla) 및 도라지(Platycodon grandiflorum)에서 100 ㎍/kg 이상으로 게르마늄 함량이 높았으며, 선학초(Agrimonia pilosa) 및 일당귀(Angelica acutiloba)의 함량은 각각 37 및 30 ㎍/kg으로 낮았다.
Abstract
To investigate the germanium content in paddy soil in Gyeongnam province, 310 paddy soil samples were collected at 19 areas in Gyeongnam, Ulsan and Busan. Contents of germanium in paddy soils were analyzed in different topographies, soil types and soil textures. Average content of germanium in Gyeo- ngnam was 0.24 ㎎/㎏, those of Masan, Jinju and Hadong were above 0.30 ㎎/㎏. Germanium content with different topographies were no difference. Germanium contents in different soil types were 0.27 ㎎/㎏ in well adapted soil and 0.23 ㎎/㎏ in poorly drained soil. Germanium contents in different soil textures were 0.27 ㎎/㎏ in silt loam and 0.23 ㎎/㎏ in sandy loam.To determine germanium content on agricultural product in the field, content of germanium in cereals, vegetables and fruits were analyzed. Germanium content of agricultural product was high in the order of cereals＞vegetables＞fruits. In case of vegetables, germanium contents were high in the order of leaf veget- ables＞root vegetables＞fruit vegetables. Germanium contents were high with 62 and 65 ㎍/㎏ in lettuce and young radish, respectively. To analyze the germanium content in medicinal plant, samples were collected from 19 medicinal plants at Hamyang areas. Germanium contents in Angelica keiskei, Ligusticum chuanxiong, Panax ginseng and Atractylodes macrocephala were relatively high with 100 ㎍/㎏ above.
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