四种园林树木抗寒性的比较分析

园艺学报 ›› 2006, Vol. 33 ›› Issue (3): 667-670.

四种园林树木抗寒性的比较分析

缴丽莉¹;路丙社^1*;白志英¹;孟庆瑞¹;甄红伟²

(¹河北农业大学园林与旅游学院, 河北保定071000; ² 河北农业大学西陵林场, 河北易县074200)

收稿日期:2005-08-19 修回日期:2005-12-01 出版日期:2006-06-25 发布日期:2006-06-25

The Comparation of Cold Resistance of Four Gardening Young Trees

Jiao Lili¹;Lu Bingshe^1*;Bai Zhiying¹;Meng Qingrui¹;Zhen Hongwei²

(¹College of Landscape and Tourism, Agricultural University of Hebei, Baoding, Hebei 071000, China; ² Forestry Station, Agricultural University of Hebei, Yixian, Hebei 074200, China)

Received:2005-08-19 Revised:2005-12-01 Online:2006-06-25 Published:2006-06-25

摘要/Abstract

摘要： 以灯台树、复叶槭、流苏和山桐子幼树1年生休眠枝条为材料, 研究了不同冷冻处理条件下枝条的相对电导率和钾离子(K⁺ ) 相对渗出率, 利用Logistic方程计算了各树种的半致死温度(LT₅₀) , 并通过苗木生长恢复试验进行了验证。结果表明: 山桐子、复叶槭、流苏和灯台树4种枝条的相对电导率和K+相对渗出率均随处理温度的降低而呈“S”形上升, 其枝条的LT₅₀分别为- 11.5℃、- 24.9℃、- 20.7℃和- 29.8℃; 其抗寒性顺序依次为: 灯台树>复叶槭>流苏>山桐子, 与枝条恢复生长的试验结果基本一致。

关键词: 灯台树, 复叶槭, 流苏, 山桐子, 相对电导率, 钾离子相对外渗率, 半致死温度(LT₅₀ )

Abstract: Regarding the relative electric conductivity and relative leakage of K⁺ as a physiological indicator for the cold resistance of one-year dormant shoots of four gardening young trees, the curves of relative electric conductivity and relative leakage of K⁺ by different temperature treatments were rep resented using Logistic equation. The results showed that the relative electric conductivity and the relative leakage of K⁺ increased as a S-curves with the decreased of temperature. According to these S-shaped curves and the
Logistic equation, it could be calculated the semi-lethal temperature (LT₅₀ ) of four sticks of Idesia polycarpa, Acer negundo, Chionanthus retusu and Cornus controversa, which was - 11.5℃, - 24.9℃, - 20.7℃ and - 29.8℃ respectively. Among the four species, the cold resistance of Cornus controversa stick was the strongest, followed by Acer negundo, Chionanthus retusu and Idesia polycarpa.

Key words: Cornus controversa, Acer negundo, Chionan thusretusu, Idesia polycarpa, Relative electric conductivity, Relative leakage of K⁺, Semi-lethal temperature (LT₅₀)

缴丽莉;路丙社;白志英;孟庆瑞;甄红伟. 四种园林树木抗寒性的比较分析[J]. 园艺学报, 2006, 33(3): 667-670.

Jiao Lili;Lu Bingshe;Bai Zhiying;Meng Qingrui;Zhen Hongwei. The Comparation of Cold Resistance of Four Gardening Young Trees[J]. ACTA HORTICULTURAE SINICA, 2006, 33(3): 667-670.

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