龙舌兰麻是一类热带硬质纤维作物。世界主要产区分布在非洲和美洲热带地区。主产国有巴西、坦桑尼亚和墨西哥;此外还有肯尼亚、安哥拉、马达加斯加和海地等。各国栽培的龙舌兰麻主要是普通剑麻、灰叶剑麻和马盖麻三种。这些品种在整个世代产叶量少(250—330片),纤维产量低。坦桑尼亚和肯尼亚的育种工作者花了二十多年时间,培育出一个丰 Agave is a tropical hard-fiber crop. The world’s major producing areas are located in the tropics of Africa and the Americas. Main producing countries are Brazil, Tanzania and Mexico; in addition to Kenya, Angola, Madagascar and Haiti. Agave cultivated in various countries are mainly ordinary sisal, gray sisal and horse hemp. These varieties produce fewer leaves (250-330 slices) throughout the entire generation with lower fiber yields. Breeding workers in Tanzania and Kenya have spent more than two decades cultivating a fortune