Variation Mode of the Absorbtion Contents of N, P and K and the Contents of Available Constituents of Angelica gigas Nakai at Different Growth Stages

당귀(當歸)(Angelica gigas Nakai)의 생육시기별(生育時期別) N, P, K 흡수(吸收) 및 유효성분함량(有效成分含量)의 변화양상(變化樣相)

This study was conducted to find out the variation modes of the absorbtion contents of N, P and K and the contents of decursin, decursinol and sugar in Angelica gigas Nakai at different growth stages. The results of field study were as follows. The dried weights of root and shoot was increased by the application of nitrogen and potassium fertilizers during the growing seasons. But, the effect of phosphorus application was observed only the increasing of the dried weight of shoot. During the growing seasons, the contents of nitrogen and phosphorus in root was decreased, but in shoot was increased. The potassium contents of root was increased and that of shoot was decreased. The decursin and total sugar contents of root were continually increased, and the decursinol and reducing sugar contents were increased until the middle growth stage and after that were decreased.

당귀(當歸)의 수량(水梁)과 품질(品秩)을 증대(增大)시키기 위하여 3요소(要素)의 사용량(使用量)에 따른 생육시기별(生育時期別) 3요소(要素) 흡수(吸收) 및 유효성분(有效成分)으로 알려져 있는 decursin, decursinol 및 당함량(糖含量)의 변화양상(變化樣相)을 조사(調査)한 결과(結果)는 다음과 같았다. 질소(窒素) 및 가리(加里)의 시용(施用)은 지상부(地上部), 지하부(地下部)의 생육촉진효과(生育促進效果)가 있었지만 인산(燐酸)의 시용(施用)은 단지 지상부(地上部)의 생육(生育)에만 효과(效果)가 인정(認定)되었다. 생육(生育)함에 따라 지하부(地下部)에는 질소(窒素) 및 인산(燐酸)의 농도(濃度)는 감소(減少)하였지만 지상부(地上部)에서는 증가(增價)하는 경향(傾向)이었다. 가리(加里)의 농도(濃度)는 지하부(地下部)에서 증가(增價)하였지만 지상부(地上部)에서는 약간 감소(減少) 또는 거의 변화(變化)가 없었다. Decursin 및 전당(全糖)의 함량(含量)은 생육후기(生育後期)로 갈수록 계속 증가(增價)하였으며, Decursinol 및 환원당함량(還元糖含量)은 생육중기(生育中期) 이후(以後)에는 수확기(收穫期)가 가까워질수록 감소(減少)하는 경향(傾向)이었다.