Horticultural Science & Technology (원예과학기술지)

Korean Society of Horticultural Science (한국원예학회)
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Yield Response of Chinese Cabbage to Compost, Gypsum, and Phosphate Treatments under the Saline-sodic Soil Conditions of Reclaimed Tidal Land

퇴비, 석고, 인산으로 개량한 염류-나트륨성 간척지 토양에서 배추의 생육

  • Lee, Jeong-Eun (Department of Bio-environmental Chemistry, Wonkwang University) ;
  • Seo, Dong-Hyuk (Department of Bio-environmental Chemistry, Wonkwang University) ;
  • Ro, Hee-Myong (Department of Agricultural Biotechnology, Seoul National University) ;
  • Yun, Seok-In (Department of Bio-environmental Chemistry, Wonkwang University)
  • 이정은 (원광대학교 생물환경화학과) ;
  • 서동혁 (원광대학교 생물환경화학과) ;
  • 노희명 (서울대학교 농생명공학부) ;
  • 윤석인 (원광대학교 생물환경화학과)
  • Received : 2015.08.17
  • Accepted : 2016.06.22
  • Published : 2016.08.31
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Abstract

Salt stress in crops in reclaimed tidal lands can be reduced by applying soil amendments. To evaluate the effects of compost, gypsum, and phosphate on the growth of Chinese cabbage in saline-sodic soil conditions, we conducted a pot experiment in 2013 and 2014. The treatments consisted of a standard fertilizer application of a mix of compost and N-P-K fertilizer (S) and standard fertilizer applications with additional compost (S + C), gypsum (S + G), phosphate (S+P), and gypsum and phosphate (S + GP). The mean dry matter yield of cabbage in 2014 was three times as great as that in 2013, although soil EC (Electrical conductivity) in 2014 was not decreased. However, the mean ratio of sodium ion in soil solution ($SAR_{1:5}$) significantly decreased from $17.3{\pm}1.1$ in 2013 to $11.2{\pm}2.7$ in 2014. Application of gypsum had the greatest positive impact on the growth of Chinese cabbage. The S + G treatment increased dry matter yield by 7.0 (48.2) and 7.9 g/plant (16.6%) in 2013 and 2014, respectively, compared to the S treatment. Applying gypsum increased soil EC, but decreased $SAR_{1:5}$ by 14 and 38% in 2013 and 2014, respectively. The application of compost and phosphate had a small effect on the growth of Chinese cabbage. These results suggest that applying gypsum in reclaimed tidal lands can reduce the sodicity of the soil and improve crop growth.

본 연구는 염류-나트륨성 토양 조건에서 작물의 생육에 미치는 퇴비, 석고, 인산의 효과를 평가하기 위해, 2013년과 2014년에 배추를 포트재배하였고, 퇴비와 화학비료를 시비한 표준시비 처리구(S), 표준시비에 퇴비 추가 처리구(S + C), 석고 추가 처리구(S + G), 인산 추가 처리구(S + P), 석고-인산 추가 처리구(S + GP) 등 다섯 처리를 두어 비교하였다. 배추 건물중은 2013년과 비교하여 2014년에 크게 증가하였다. 토양의 전기전도도(EC)가 2013년에 비해 2014년에 감소하지 않았지만, 토양용액내 양이온 중 나트륨의 평균 비율($SAR_{1:5}$)이 2013년 $17.3{\pm}1.1$에서 2014년 $11.2{\pm}2.7$로 크게 감소하였다. 토양개량제 중에서 석고를 시용하였을 때 배추의 생육이 가장 좋았다. 표준시비 처리구와 비교하여 석고 추가 처리구에서 배추 건물중이 2013년에 7.0g/plant(48.2%) 더 높았고 2014년에 7.9g/plant(16.6%) 더 높았다. 석고 시용 시 오히려 토양 전기전도도가 증가하여 배추 생육에 부정적이었지만, SAR이 2013년과 2014년에 각각 14%, 38% 감소하여 배추생육에 긍정적인 효과가 있었다. 본 연구 결과는 염류-나트륨성 토양이 분포하는 간척지에 석고를 시용하여 토양의 나트륨 비율을 개선함으로써 작물의 생육을 촉진시킬 수 있다는 것을 시사해 주었다.

Keywords

References

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