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云杉和水杉有什么区别
更新时间: 2020-11-04 10:37:30  

云杉主要分布于陕西西南部、甘肃东部以及白龙江流域等地区,子叶6至7枚,呈条状锥形,长1.4至2cm,初生叶四棱状条形,长0.5至1.2cm,先端尖,四面有气孔线,全缘或隆起的中脉上部有齿毛。耐阴,喜好湿润的气候和肥沃微酸性的沙质土壤,生长较慢,属于浅根性树种。而水杉主要分布在湖北、重庆、湖南交界的利川、石柱以及龙山三县等地区。子叶呈条形,长0.8至3.5cm,宽1至2.5cm,上面呈淡绿色,下面呈色较淡,沿中脉有2条稍宽的淡黄色气孔带,每带有4至8条气孔线,叶在侧生小枝上呈羽状。生于山谷或山麓附近稍有积水之处,耐寒性和耐水湿能力较强,在轻盐碱地可生长为喜光性树种,根系发达,生长的快慢常受土壤水分的支配,并且树干基部一般膨大和有纵棱。

关键词: 云杉 水杉 什么 区别

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