Effect on Simulated Acid Rain and Wood Vinegar Treatment on Growth of Lonicera japonica

인공산성비 및 목초액 처리가 인동덩굴의 생장에 미치는 영향

  • Seo, Dong-Jin (Department of Forest Environmental Resources, Gyeongsang National University) ;
  • Kim, Jong-Kab (Department of Forest Environmental Resources, Gyeongsang National University)
  • 서동진 (경상대학교 환경산림과학부) ;
  • 김종갑 (경상대학교 환경산림과학부)
  • Received : 2010.04.05
  • Accepted : 2010.05.06
  • Published : 2010.06.30

Abstract

This study was carried out to understand the effect on soil chemical property, ion contents, and growth of Lonicera japonica by treatment of simulated acid rain and wood vinegar. It was treated total 30 times by one time per 2 weeks during 150 days from June to October dividing to various pH level of simulated acid rain (each pH 5.6, 4.5, 3.5 and 2.5) and the control site (pH 6.3). The wood vinegar diluted with 500 times was also treated total 10 times by one time per 2 weeks at the experimental sites. The soil pH was reduced as pH level of simulated acid rain was decreased. The organic content, total nitrogen, and Av. $P_2O_5$ in soil showed a tendency to increment. However, the soil improvement effect was exposed to be insufficient when a wood vinegar was treated. In the component of the plant body, $SO_4{^2}$ and $NO_3{^-}$ increased due to the simulated acid rain treatment and the increment ratio was reduced in the wood vinegar treatment plot. In addition, the cation contents showed a tendency to variation due to pH of simulated acid rain. And it showed more increment in the leaves than the root. The early fallen leaves and growth inhibition of L. japonica showed up after the simulated acid rain treatment but the growth of L. japonica increased after the wood vinegar treatment.

인공산성비 처리와 목초액 처리가 토양 화학적 성질, 인동덩굴(Lonicera japonica)의 뿌리와 엽내 이온함량 변화 및 생장에 미치는 영향을 알아보기 위하여 다양한 수준의 인공산성비(pH 5.6, 4.5, 3.5, 2.5)와 대조구(pH 6.3)로 구분하여 6월에서 10월까지 150일간 주 2회씩 총 30회에 걸쳐 처리하였고, 목초액을 500배로 희석하여 2주 1회씩 총 10회에 걸쳐 처리하였다. 인공산성비의 pH가 낮아질수록 토양 pH는 감소하였고, 유기물함량, 전 질소, 유효인산은 증가하는 경향이었지만, 목초액을 처리하였을 때 토양 개선효과는 미비한 것으로 나타났다. 식물체의 성분은 인공산성비 처리에 의해 $SO_4{^2}$$NO_3{^-}$가 증가하였으며 목초액 처리구에서는 증가 폭이 감소하였다. 또한 양이온은 인공산성비의 pH 에 따라 증가하는 경향이 나타났으며, 뿌리 보다는 잎에서 더 높게 나타났다. 인공산성비 처리 후 조기 낙엽과 생장저해가 나타났으나 목초액 처리 후 생장량이 증가하였다.

Keywords

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