Background : Ginseng is mainly grown as a break crop in paddy fields after rice has been cultured for approximately 4 - 5 years, because it reduces the negative effects of continuous rice cropping. However, physiological disorders, such as leaf discoloration, occur in ginseng grown in paddy fields with poor drainage and excessive levels of inorganic components.
Methods and Results : This study investigated the effect of ridge height on the growth characteristics and yield of 6 year old Panax ginseng. Ridge height was varied by making 20, 30, and 40 ㎝ high ridges in a pooly drained paddy field. Soil moisture content decreased, while electrical conductivity (EC) as the ridge height increased. The NO3, K, Ca, Mg, and Na levels also rose as ridge height increased, but organic matter and P2O4 levels did not. The leaf discoloration ratio rose as the ridge height increased, and root yield reached a peak when the ridge height was 30 ㎝.
Conclusion : A ridge height of 30 ㎝ in poorly drained paddy field improved ginseng growth by reducing leaf discoloration and increasing root survival, owing to more suitable soil moisture and EC levels.

서 언
 재료 및 방법
 결과 및 고찰
  1. 두둑높이에 따른 토양수분 및 염류농도의 경시적 변화
  2. 두둑높이에 따른 토양의 화학적 특성 변화
  3. 두둑높이별 6년생 인삼의 생육특성 및 수량성
 감사의 글
 REFERENCES

• 이성우(농촌진흥청 국립원예특작과학원 인삼특작부) | Sung Woo Lee Corresponding author
• 이승호(농촌진흥청 국립원예특작과학원 인삼특작부) | Seung Ho Lee
• 장인복(농촌진흥청 국립원예특작과학원 인삼특작부) | In Bok Jang
• Jin Mei Lan(농촌진흥청 국립원예특작과학원 인삼특작부)
• 박경훈(농촌진흥청 국립원예특작과학원 인삼특작부) | Kyung Hoon Park
• 김기홍(농촌진흥청 국립원예특작과학원 인삼특작부) | Ki Hong Kim