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将四周龄的Fraser冷杉[Abies fraseri(Pursh)Poir]树苗栽培在能控制环境的室内,在昼温为18°、22°、26°和30℃与夜温为10°、14°、18°、22°、26℃的阶乘组合下生长17周,最适温度取决于生长参数:子叶以上的高度(30°/18℃),茎的横截面积22°/26℃,根的干重(26°/10℃),枝的干重(18°/22℃和22°/26℃)和总干重(26°/14℃)枝/根的比率在夜温低于14℃时迅速降低,而在昼温30℃和夜温18°—22℃组合时为最高。昼温达30℃时能加速长高,但会使总干重,根的干重和茎的横截面积减低。昼温22°—27℃,和夜温13°—19℃对在旺盛生长期的集装箱化的Fraser冷杉树苗最为适宜。
Four-week-old Fraser fir (Abies fraseri (Pursh) Poir] saplings were grown indoors in controlled environments at temperatures of 18 °, 22 °, 26 ° and 30 ° C with night temperatures of 10 °, 14 °, 18 ° The optimum temperature was determined by the growth parameters: height above cotyledon (30 ° / 18 ℃), cross-sectional area of stem 22 ° / 26 ℃, dry weight of root (18 ° C / 22 ° C and 22 ° / 26 ° C) and total dry weight (26 ° / 14 ° C) branches / roots rapidly decreased at night temperatures below 14 ° C , While the highest temperature was 30 ℃ and night temperature 18 ° -22 ℃ combination. Daytime temperature up to 30 ℃ can accelerate the growth, but will make the total dry weight, root dry weight and stem cross-sectional area reduced. Day temperatures of 22 ° -27 ° C and night temperatures of 13 ° -19 ° C are most suitable for containerized Fraser fir seedlings in high season.