一、蓝剑麻(Agave amaniensis Jrel.and Nowell)(2n=60) 蓝剑麻系1929年在坦桑尼亚阿曼尼东非农业研究站的次生植被中第一次发现的。它可能是在第一次世界大战前已由德国人引进。它是一个尚未被描述过的二倍体。在整个生命周期里,单株产叶约200片。叶片大,长约150—200厘米,叶尖有刺,叶缘平滑;叶片通常起波纹,因覆有一厚层角质蜡而呈现粉蓝色,纤维长而细。每片叶具有2,000多条纤维束, First, blue sisal (Agave amaniensis Jrel.and Nowell) (2n = 60) Blue sisal line was discovered in 1929 in the secondary vegetation of the East African Agricultural Research Station in Amani, Tanzania. It may have been introduced by Germans before the First World War. It is a diploid that has not been described yet. Throughout the life cycle, leaves about 200 leaves per plant. Leaves large, about 150-200 cm, tip spines, leaf margin smooth; leaves usually rippled, as covered with a thick layer of horny wax and appear pink blue, long and thin fibers. Each leaf has more than 2,000 fiber bundles,