한국환경생태학회지 (Korean Journal of Environment and Ecology)

  • 제34권4호
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  • Pages.345-354
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  • 2020
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  • 1229-3857(pISSN)
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  • 2288-131X(eISSN)
한국환경생태학회 (Korean Society of Environment and Ecology)
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토양개량제와 수크령 식재에 따른 고농도 염화칼슘 염분저감 효과 비교

Comparison of the High Concentration Calcium Chloride(CaCl2) Salt Reduction Effect of Soil Amendment Agent and Planting Pennisetum alopecuroides

  • 양지 (건국대학교 대학원 녹색기술융합학과) ;
  • 박재현 (국립산림품종관리센터 종묘관리과) ;
  • 윤용한 (건국대학교 녹색환경시스템전공) ;
  • 주진희 (건국대학교 녹색환경시스템전공)
  • Yang, Ji (Dept. of Green Technology Convergence, Graduate School, Konkuk University) ;
  • Park, Jae-Hyeon (Korea Forest Seed & Variety Center) ;
  • Yoon, Yong-Han (Dept. of Green Technology Convergence, Konkuk University) ;
  • Ju, Jin-Hee (Dept. of Green Technology Convergence, Konkuk University)
  • 투고 : 2020.05.07
  • 심사 : 2020.07.27
  • 발행 : 2020.08.31
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초록

본 연구는 고농도 염화칼슘 처리 토양에서 토양개량제인 하이드로볼, 활성탄의 처리와 수크령 식재 유무에 따른 토양침출수의 화학적 특성과 토양 내 염분 저감 효과에 미치는 영향을 규명하고자 수행하였다. 고농도 제설제처리 염분토양에서 토양개량제 하이드로볼, 활성탄의 염분 저감 효과 및 수크령의 식재 효과를 알아보기 위하여 2018년 4월부터 10월까지 유리온실에 직경 10 cm, 높이 9 cm의 플라스틱 포트에 수크령을 식재하고 무처리 (Cont.), 하이드로볼 (H), 활성탄 (AC), 수크령식재 (P), 하이드로볼 + 수크령식재 (H + P), 활성탄 + 수크령식재 (AC + P) 총 6개의 처리구로 나누었다. 염화칼슘 (CaCl2) 처리는 10 mg/L 농도의 수용액을 조제하여 2주 간격 1회 200mL씩 분주하였다. 토양침출수 분석은 pH와 EC, 염류계치환성양이온 (K+, Ca2+, Na+, Mg2+) 함량을 측정하였고, 수크령의 생육은 초장, 엽장, 엽폭, 엽수를 측정한 뒤 실험종료 후 생체중, 건물중, 건물률, T/R률을 조사 분석하였다. 토양침출수 화학성 분석결과, 토양산도는 처리구별 뚜렷한 차이를 보이지는 않았으나 모든 처리구에서 약산성을 띄었으며, 전기전도도는 H + P, P, AC + P, H, AC, Cont. 순으로 감소하는 경향을 보였다. 염류계 치환성양이온함량에 있어서 토양 염류도의 지표라 할 수 있는 Ca2+ 항목에서 Cont., P, H, AC, H + P, AC + P 순으로 높아지는 경향을 보였다. 수크령의 생육변화는 H + P, AC + P, P 순으로 초장, 엽장, 엽폭, 엽수 모든 항목에서 상대생장률이 통계적으로 유의하게 높게 나타났다. 따라서 하이드로볼과 활성탄은 제설제 피해지역 토양개량제로 활용가치가 높으며 수크령은 토양 내 고농도 염화칼슘 염분저감 식물소재로 적합한 수종이라 판단된다.

The purpose of this study was to investigate the effects of soil amendment treatments, such as hydroball, and active carbon, and planting Pennisetum alopecuroides for reducing calcium chloride (CaCl2) of soil leachate and the growth of Pennisetum alopecuroides. The experiment planted Pennisetum alopecuroides in a plastic pot with a diameter of 10 cm and a height of 9 cm in a greenhouse April-October 2018. The experimental group comprised six treatments, including Non-treatment (Cont.), Hydroball (H), Active carbon (AC), planting Pennisetum alopecuroides (P), hydroball + planting Pennisetum alopecuroides (H + P), and active carbon + planting Pennisetum alopecuroides (AC + P). The dissolution of the CaCl2 concentration 200ml of 10g/L was irrigated once every two weeks. We measured the growth (plant height, leaf length, leaf width, number of leaves), EC, pH, and exchangeable cations (K+, Ca2+, Na+, and Mg2+) according to the high concentration of CaCl2 in the plant and soil leachate. In a treatment with the 'hydroball' amendment, the soil leachate electrical conductivity (EC), and the cation exchangeable were decreased more than those of the control, while the growth of Pennisetum alopecuroides relative growth rate(RGR) increased. Overall, application with the hydroball amendment added the planting of Pennisetum alopecuroides improved the salt reduction effect more than the control group. These results indicate that the application of the soil amendment agent hydroball was suitable soil amendments in accordance with the high concentration of calcium chloride (CaCl2). Also, Planting Pennisetum alopecuroides is expected to be appropriate for salt-tolerant plant for soil affected by deicing salt agents.

키워드

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