【摘要】 通过以不同光照条件下的 3年生曼地亚红豆杉 (Taxusmediacv.Hicksii)为材料 ,以低温半致死温度为指标 ,研究了其叶片在自然降温过程中抗寒力的变化。结果表明 :不同光照条件下的曼地亚红豆杉抗寒力发生了变化 ,其变化由大至小的顺序为 :自然光 >1层遮荫 >2层遮荫。更多还原

【Abstract】 The paper studies the changes of leaf cold resistance abilities of 3-year old T.media cv. Hicksii grown at different light conditions as temperature fell taking the semilethal temperature as index.The results show that the order of leaf cold resistance ability of T.media cv.Hicksii among the three light conditions is natural-light leaf > one-layer shady leaf > two-Layer shady leaf.更多还原