초록
대맥, 소맥, 대두(大豆), 감자, 고구마, 오이, 가지, 고추 토마토, 상치, 수박, 아주까리, 포도, 백합에 0.1, 0.25, 0.50, $1.0mg{\ell}/hr$의 아황산가스를 각각(各各) 접촉하여, 엽피해증상, 피해엽율(被害葉率), 체내유황함량, 가스흡수량(吸收量)을 조사(調査)한 결과(結果)는 다음과 같다. 1. 아황산가스 농도증가에 따라 엽피해(葉被害)가 증가하였으며, 작물(作物)에 따라서 엽피해정도(葉被害程度)가 상이(相異)하여 가지는 $0.1mg/{\ell}/hr$에서 30%, 소맥, 감자, 아주까리, 수박, 백합은 $0.25mg/{\ell}/hr$에서 가시적(可視的) 피해(被害)가 나타나지 않았으며, 수박은 $0.5mg/{\ell}/hr$에서 피해엽율(被害葉率)이 6.4%이였다. 2. 피해증상의 특징(特徵)은 대맥, 소맥은 엽맥(葉脈)사이를 따라 회백색(灰白色)내지 적갈색반점(赤葛色班点), 대두(大豆), 감자, 고구마, 아주까리, 가지, 고추, 토마토, 포도는 엽맥(葉脈)사이에 적갈색반점(赤葛色班点), 상치, 수박, 백합은 엽맥(葉脈)사이에 회백색반점(灰白色班点), 오이는 엽선단(葉先端)을 따라 백색(白色)으로 고사(枯死)되였다. 3. 오이, 가지, 고추, 아주까리는 $0.1mg/{\ell}/hr$의 아황산가스 흡수량(吸收量)이 $10{\ell}$ 이상(以上)인데, 상치, 수박, 포도, 보리, 밀은 $2{\ell}$ 미만이였다. 4. 아황산가스 농도(濃度)에 비례(比例)하여 각작물체내 유황함량(硫黃含量)이 증가하였으나, 흡수(吸收)된 가스량(量)은 감소(減少)하였고, 유황함량(硫黃含量) 및 흡수(吸收)된 가스량(量)은 작물(作物)에 따라 상이(相異)하였다. 5. 작물체내 유황함량(硫黃含量)이 증가함에 따라 피해엽율(被害葉率)이 증가하였으며, 전유황(全硫黃)과 수용성유황함량간(水溶性硫黃含量間)에는 $Y=0.79X-0.12({\gamma}=0.9522^{**})$의 정(正)의 상관을 나타내었다.
To study the effects of sulfur dioxide on the plant; Barly, wheat, soybean sweet potato, cucumber, egg plant, red pepper, tomato, lettuce, water melon, castor bean, grape and lily were exposed to the different levels of sulfur dioxide gas(0.1, 0.25, 0.50, $1.0mg/{\ell}/hr$) The symptoms of damage, ratios of destroyed leaf, sulfur content and absorption amounts of the gas by leaves were investigated 1. According to the increasing concentration of the gas ratios of destroyed leaf were increased in all plants. The ratios of destroyed leaf were shown by egg plant at $0.1mg/{\ell}/hr$ of $SO_2$ were 30 percent, and no visible injuries were shown by the wheat potato, castor bean, water melon, lily at $0.25mg/{\ell}/hr$. 2. Gray and red brown spots between the vein nerve shown by barly and wheat leaf; leaf burn by soybean, potato, sweat potato, castor bean, egg plant, red pepper, tomato and grape; leaf withering from the leaf tips by the lettuce, water melon, lily. 3. The volums of the gas absorption by cucumber, egg plant, red peper, castor he an were more than $10{\ell}/hr$, however less than $2{\ell}/hr$, be lettuce, water melon, grape, barly and wheat. 4. According to the increasing concentration of sulfur dioxide gas, sulfur contents in leaf were increased in all plants, however volums of absorption gas were decreaed. 5. According to the increase of sulfur content in leaf, ratios of destroyed leaf were increased. 6. Positive correlation was shown between total and water soluble sulfur content in leaf.