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1 形态特征 芦苇Phragmjtes communis Trin.属禾本科,为多年生高大草本植物,地下茎横生,在适生的砂质壤士中长可达10余米,径粗1.0～1.5厘米,黄白色,节间中空,每节生有1芽,且有多条须根。地上茎直立,高2～5米,表面光滑,富含纤维,质较坚韧,每节且有1腋芽,节下通常有白粉。叶二列式排列,叶片广披针形,长30～6O厘米,宽2～5厘米,全缘,两面粗糙;叶鞘圆筒状包围着杆,叶舌有毛。秋季开花,圆锥花序顶生,呈毛帚状,长约15～45厘米,棕紫色,略下垂头,基部常有白色丝状毛。2 生境条件 芦苇分布几遍全国及全球暖温带地区。喜湿、喜光,多生于河滩、湿地、池沼、盐渍地、堰坝及池塘边,但十旱沙丘亦能生长。
1 Morphological characteristics Reed Phragmjtes communis Trin. Gramineae, is a perennial tall large herbaceous plant, underground stems accrete, in the habitat of sandy soil cuttings up to 10 meters long, diameter of 1.0 to 1.5 cm, yellow-white, internals hollow , Each node has a bud, and a number of fibrous roots. On the stem erect, 2 to 5 meters high, smooth, rich in fiber, the quality of more tough, each section and 1 axillary buds, the festival is usually white powder. Leaves arranged in two rows, the leaves wide lanceolate, 30 to 60 cm long, 2 to 5 cm wide, entire, both sides rough; sheath sheath surrounded by leaves, ligule hairy. Flowering in autumn, panicle terminal, showing a broom-like, about 15 to 45 cm, brownish purple, slightly drooping head, the base often white filamentous hair. 2 Habitat Reed distribution several times the national and global warm temperate regions. Hi wet, hi light, more than born in riverbanks, wetlands, ponds, salinization, barrage and ponds, but ten dry sand dunes can grow.