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은행나무 묘목에 대한 시비가 생장 및 엽내 양분과 유용 추출물 농도에 미치는 영향
손요환,김진수,황재홍,박정수 ( Yo Whan Son,Zin Suh Kim,Jae Hong Hwang,Jung Soo Park ) 한국산림과학회 1998 한국산림과학회지 Vol.87 No.1
We measured seedling growth, foliar nutrient and extract concentrations of 3-year-old Ginkgo biloba seedlings growing in a nursery following a single fertilization with nitrogen (N), phosphorus (P) and nitrogen plus phosphorus (N+P) fertilizers. Fertilization did not change foliage, stem and root biomass of the seedlings except for the high N+P treatment, Foliar N and P concentrations following fertilization varied according to the amount of fertilizers. In general, foliar N and P concentrations increased with fertilization, but fertilization with 400㎏ N/㏊ and 100㎏ P/㏊ decreased foliar N and P concentrations, respectively. Seedling growth and foliar nutrient concentrations showed that N and P were the growth-limiting nutrients in our study site. It was found that fertilization reduced the concentrations of secondary metabolites (Ginkgo flavon glycosides and terpene lactones) in foliages. It seemed there was a relationship between foliage biomass production and secondary chemicals in G. biloba seedlings.