美国亚利桑那大学植物育种学家汤姆·拉梅奇搜集了全世界的大麦品种进行杂交,旨在培育出适合北部非洲荒漠地区生长的新品种,结果获得扎根深度大于180厘米的大麦类型.这一性状使之不用灌水也能通过吸收深层地下水得以生长、生产.准备于1986年秋季推出的两个品种,在供水150毫米的情况下,10年平均亩产大麦187～224公斤.这类大麦还能够控制杂草、减小风蚀、提供饲草. Tom Lamech, a plant breeding scientist at the University of Arizona in the United States, has collected the world’s barley varieties for hybridization to breed new varieties suitable for growing in the desert regions of northern Africa, with the result that barley types with a rooting depth greater than 180 cm are obtained. So that it can be grown and produced by absorbing deep groundwater without using irrigation. Two varieties, introduced in the fall of 1986, produced 187-224 kg of barley per mu for 10 years at a water supply of 150 mm, Control weeds, reduce wind erosion, provide forage.