Effects of Soil Moisture and Planting Depth on the Growth of 2-year Old Ginseng Plant (Panax ginseng C. A. Meyer)

토양수분(土讓水分) 및 재식심도(栽植深度)가 저년근(低年根) 고려인삼(高麗人蔘)의 생육(生育)에 미치는 영향(影響)

  • Lee, Jong Chul (Korean ginseng and tobacco research institute) ;
  • Mok, Seong Kyun (Korean ginseng and tobacco research institute) ;
  • Lee, Jong Wha (Korean ginseng and tobacco research institute) ;
  • Jo, Jae Seong (Dept. of Agronomy, College of Agriculture, Choongnam National University)
  • Published : 1983.12.31

Abstract

This experiment was conducted to determine the effect of soil moisture content and planting depth on the growth of 2-year old ginseng plant. The results obtained are summarized as follows; 1. When the ginseng seedlings were planted in soil by 4 to 5cm in depth, the length of leaflet and stem and the number of branch roots were significantly decreased but the stem diameter was increased. 2. Highly significant quadratic regressions were shown between soil moisture content and the growth of the stem, leaf and root of the ginseng plant. 3. Estimated amount of soil moisture for the maximum growth of the stem was 75% of field capacity, and that for length and width of the leaflet was about 65 to 66% of field capacity. Estimated soil moisture for the maximum growth of the root was about 56 to 58% of field capacity and that for increase in root weight was about 60 to 61% of field capacity. 4. Estimated soil moisture content for best growth of ginseng roots was 1 to 5% lower when the seedling was planted in 3cm depth compared with 2cm in depth. And when the amount of soil moisture was 31% of field capacity, the deep planting was adequate for good root growth. 5. Significant correlations were resulted between the dry weight of roots and the leaf length, the leaf width and the dry weight of stem and leaves. And also, significant correlations were obtained between the ratio of root dry weight to root fresh weight and the stem length, the leaf length, the leaf width and the dry weight of stem and leaves.

토양수분(土壤水分) 및 재식심도(栽植深度)가 인삼(人蔘)의 생육(生育) 및 수량(收量)에 미치는 영향(影響)을 구명(九命)하고져 본(本) 실험(實驗)을 수행(遂行)하였던바 그 결과(結果)를 요약(要約)하면 다음과 같다. 1) 엽장(葉長) 및 근장(根長)과 지근수(支根數)는 4~5cm 심도(深度)의 재식구(栽植區)에서 현저한 감소(減少)를 보였던 반면(反面) 경직경(莖直徑)은 오히려 증가(增加)되었고 그 외의 생육(生肉) 형질(形質)은 심도(深度)에 따르는 유의차(有意差)가 인정(認定)되지 않았다. 2) 경직경(莖直徑)을 제외한 경엽(莖葉) 및 근(根)의 주요(主要) 생육(生育) 형질(形質)은 토양수분(土壤水分)의 증가(增加)에 따라 고도(高度)로 현저한 2차곡선적(次曲線的) 변이(變異)를 나타내었다. 3) 경장(莖長)의 최대(最大) 생육(生育)에 요(要)하는 최적토양수분함량(最適土壤水分含量)의 추정치(推定値)는 75%였고 엽장(葉長) 및 엽폭(葉幅)에 요(要)하는 최적수분(最適水分)은 65~66%였으며 근장(根長) 및 지근수(支根數)에 요(要)하는 최적수분(最適水分)은 56~58%였고 근중(根重)의 증가(增加)에 요(要)하는 최적수분(最適水分)은 60~61%였다. 4) 2cm심도(深度)의 재식구(栽植區)에 비(比)해 3cm 심도(深度)의 재식구(栽植區)에서 근중증가(根重增加)에 요(要)하는 최적(最適) 토양수분(土壤水分)의 추정치(推定値)는 1~5% 낮았다. 31%의 토양수분하(土壤水分下)에서만은 깊게 심을 수록 근건물중(根乾物重)은 현저히 증가(增加)되었다. 5) 근건물중(根乾物重)과 엽장(葉長), 엽폭(葉幅) 및 지상부(地上部) 건물중간(乾物重間)에는 정(正)의 유의(有意) 상관(相關)이 인정(認定)되었고 근(根)의 생체중(生體中)에 대(對)한 건물중(乾物重)의 비율(比率)은 경장(莖長), 엽장(葉長), 엽폭(葉幅) 및 지상부(地上部) 건물중(乾物重)과 역시 정(正)의 유의(有意) 상관(相關)이 인정(認定)되었다.

Keywords