纺织工业的主要原料有植物纤维、动物纤维、矿物纤维和人造纤维四类。植物纤维中除了棉花就是靱皮纤维。靱皮纤维有从植物的茎上取得的纤维,如亚麻、苧麻、大麻、黄麻等,也有从植物的叶上取得的纤维,如马尼刺麻。亚麻在靱皮纤维中是较好的一种,因为除了苧麻,它比其他的靱皮纤维能纺出更高级的纱。亚麻为一年生的草本植物,普通分力长茎麻和短茎麻两种。此外还有各种的混种麻。长茎麻高度约在600到800毫米,有长到一米以上的。它枝杆较少,只带有少量的籽蒴。长茎麻 The main raw materials for the textile industry include plant fibers, animal fibers, mineral fibers and man-made fibers. In addition to cotton, plant fibers are molting fibers. Suede fibers are obtained from the stalks of plants, such as flax, ramie, hemp, jute, etc., as well as fibers obtained from the leaves of plants, such as Mani bursae. The flax is a better one in the molting fibers because it can be spun higher than other molting fibers in addition to ramie. Flax is an annual herbaceous plant, and its ordinary components include long stem and short stem. There is also a variety of mixed hemp. The long stems are about 600 to 800 mm in height and have a length of more than one meter. It has fewer branches and only a small amount of seed pods. Long stem