Studies on relationship between composition and type of fertilizer and seedling I. Influence on biomass, specific leaf area and chlorophyll content

비료의 성분 및 종류와 묘목과의 관계 연구 I. 생체량, SLA 및 엽록소 함량에 미치는 영향

  • 황정옥 (고려대학교 환경생태공학부) ;
  • 손요환 (고려대학교 환경생태공학부) ;
  • 이명종 (강원대학교 산림자원학부) ;
  • 변재경 (임업연구원 임지보전과) ;
  • 정진현 (임업연구원 임지보전과) ;
  • 이천용 (임업연구원 임지보전과)
  • Published : 2003.09.01

Abstract

This study was conducted to develop new fertilizers which can be applied to various environmental conditions. Fertilizers with different levels of nitrogen, phosphorus and potassium, and different types and amount of combined fertilizers were used on 1-1 seedlings of Pinus densiflora, Larix leptolepis, Quercus acutissima, and Betula platyphylla var. japonica. Biomass, specific leaf area (SLA) and chlorophyll content of foliage were measured. Biomass of foliage, shoot, and root showed no differences among fertilization treatments. Biomass of double treatments of solid-combination fertilizer and UF combination fertilizer increased whereas those of triple treatments decreased. SLA ($\textrm{cm}^2$/g) of P. densiflora fo. the 6:4:1 treatment and L. leptolepis for the 3:4:1 treatment showed the highest with 59.2 and 110.0, respectively, but those of Q. arutissima and B. platyphylla var. japonica for the control showed the higher than other treatments with 207.5 and 202.0, respectively. Chlorophyll contents (mg/g) in the foliage of P. densiflora and L. leptolepis fertilized with the 6:4:1 treatment were 0.222 and 0.127, respectively, and these contents were higher than those of the 3:4:1 treatment with 0.211 and 0.082, respectively. These results suggested that the increased nitrogen fertilization had an effort on increase of chlorophyll contents.