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  • 樹木

    木本植物的總稱,有喬木、灌木和木質藤本之分,樹木主要是種子植物,蕨類植物中只有樹蕨為樹木,中國約有8000多種樹木。

    喬木:高3m以上具有明顯直立的主干和廣闊樹冠的木本植物,如楊樹、槐樹、杉木。按其大小又可分為大喬木(高20m以上)、中喬木(高10-20m)、小喬木(高3-10m)。

    灌木:無明顯主桿,植株高度較矮,一般在3米以下,分枝極多的一類植物。

    平特公式
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