论文部分内容阅读
金叶美国梓紫薇科落叶乔木,高达15—20米,株形开展,叶对生或3叶轮生,叶阔卵圆形,叶基心形,长25cm左右,新叶金黄,夏季叶色转为黄绿,花白色,花茎5cm顶生圆锥花序,上部呈黄色和棕紫色,荚果细长。耐寒、耐旱,喜光照,稍耐阴,喜肥沃湿润而排水良好的土壤,抗污染能力较强,根系较浅,生长较快。抗病虫力稍差。原产美国东南部,适合我国的东北、华北地区栽培。金叶美国梓冠大、荫浓,树
Sequoia Americana Zi Ziwei Deciduous trees, up to 15-20 meters, the plant-shaped, leaf opposite or 3-leaf rotation, leafy oval, leaf-based heart-shaped, about 25cm long, the new leaves golden yellow summer leaf color switch For the yellow-green, white flowers, stems 5cm top panicles, the upper part is yellow and brown purple, pods slender. Cold-tolerant, drought-tolerant, hi light, a little shade-tolerant, like fertile moist and well-drained soil, strong anti-pollution ability, shallow root system, rapid growth. Disease and insect resistance is slightly worse. Native to the southeastern United States, suitable for China’s northeast and north China cultivation. Golden leaf American crown big, shade thick, tree