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Early Growth Response and Nutrient Absorption Characteristics of Willows (Salix sp.) Treated with Nitrogen Source

질소원 처리에 따른 버드나무류의 생육초기 반응과 양분 흡수 특성

  • Chae, Seung-Min (Dept. of Forest Environmental Science, Jeonbuk National University) ;
  • Kim, Mi-Ja (Dept. of Forest Environmental Science, Jeonbuk National University) ;
  • Kim, Sun-Young (Dept. of Forest Environmental Science, Jeonbuk National University) ;
  • Lee, Chang-Heon (Dept. of Forest Environmental Science, Jeonbuk National University)
  • 채승민 (전북대학교 산림환경과학과) ;
  • 김미자 (전북대학교 산림환경과학과) ;
  • 김선영 (전북대학교 산림환경과학과) ;
  • 이창헌 (전북대학교 산림환경과학과)
  • Received : 2020.04.09
  • Accepted : 2020.05.25
  • Published : 2020.06.30

Abstract

The present study was to investigate the growth response and nutrient absorption in three willow species (Salix gracilistyla, S. koreensis and S. chaenomeloides) treated with nitrogen source (NH4+:NO3- rate; 200:0, 150:50, 100:100, 50:150, 200:0) for a period of 90days. The height, dry weight and chlorophyll contents of three species of willows were found to be highest at 50:150 (NH4+:NO3-) treatment. NO3--N was more effective than NH4+-N in the early growth of three species of willows. The increase in percentage of NO3--N handling, T-N, NO3--N in plant tissue increased. The analysis of C, N and mineral content in various parts revealed that the amounts of C, N, K, Ca and Mg were higher in leaves than those in the stems and the roots. However, the amount of NO3--N and P were higher in roots than those in the leaves and the stems. Salix koreensis was excellent, followed by S. chaenomeloides and S. gracilistyla in absorption of nitrate nitrogen. Higher percentage of NO3--N, the amounts of T-N, NO3--N, P2O5, K, Na, Ca, and pH in soil were decreased.

Keywords

References

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