棉花,是锦葵科棉花属植物个种子纤维,原产拉亚热带,拉热带地区栽培可长到6米高,一般为1到2米。花朵乳白色,开花后弗久转成深红色然后凋谢,留下绿色小型个蒴果,称为棉铃。棉铃内有棉籽,棉籽上个茸毛从棉籽表皮长出,塞满棉铃内部。棉铃成熟辰光裂开,露出柔软个纤维。
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