论文部分内容阅读
铁树在植物学上称为苏铁,别名凤尾蕉、番蕉、避火蕉、属苏铁科、苏铁属常绿乔木。原严于我国中南部、印度、日本及印度尼西亚,起源于东亚和东南亚。浙、赣、湘、川等地厂为栽培。华北、西北等地作盆栽植物供室内观赏。苏铁性喜阳光、干燥和通风良好环境,不耐寒,好肥,喜沙质土壤,生长缓慢。 苏铁在原产地高可达8米,室内盆栽高可达3米,茎为粗圆柱状,没有分枝,有粗大的叶痕,形成鱼鳞状。叶簇生于至顶,为大型羽状复叶,长1米左右。小叶线形,革质,尖端坚硬,浓绿色具光泽,叶绿反卷。每年春天生2～3轮,老叶则相继脱落;花单性,生于
Tieshu in botany known as cycads, alias phoenix banana, banana, fire banana, is a cycad, cycads are evergreen trees. The original strict in central and southern China, India, Japan and Indonesia, originated in East Asia and Southeast Asia. Zhejiang, Jiangxi, Hunan, Sichuan and other plants for cultivation. North China, Northwest and other places for potted plants for indoor viewing. Cycas Hi sun, dry and well-ventilated environment, not cold, good fertilizer, Hi sandy soil, slow growth. Cycas high in the origin of up to 8 meters, up to 3 meters high indoor potted stems are rough cylindrical, no branches, with large leaf marks, the formation of fish scales. Born from the top of the leaf clusters, for the large pinnate, about 1 meter long. Lobular linear, leathery, cutting-edge hard, rich green shiny, leaf green anti-roll. Spring each year 2 to 3, the old leaves are successively off; flowers unisexual, born