中文摘要：

通过对库布齐沙漠人工梭梭地上、地下部分生长特性的调查研究，表明，梭梭苗木幼龄阶段生长非常迅速，2年生梭梭平均株高、地茎与1年生比较，增长率分别为145.93％和165．06％，3年生梭梭与2年生比较，增长率分别是168．75％和335．77％，即梭梭苗木以苗期速生来适应流沙活动性。不同立地条件的梭梭根系表现出明显的可塑性，2年、3年、4年生梭梭主根较明显，向下至100cm左右，且随着土层的加深根量呈现逐渐减少的趋势。2年、3年、4年生梭梭侧根系统的根量呈现相同的变化趋势，2年生梭梭侧根根量主要集中在距地表105em以上范围，且在60cm-90cm范围内大量集中。3年、4年生梭梭则主要集中在0cm-30cm和90em-120cm，且在90cm～120cm范围内大量集中，因此，水平根系集中分布在距地表120cm的土层范围内。

英文摘要：

The Haloxylon ammodendron growing characters under ground and above ground indicated that Haloxylon ammodendron grows fast when it is a seedling,two years old Haloxylon ammodendron average highness, and terra stem growing rate are 145.93% and 165. 065% compared with one year old,three years old compared with two year old one are 168.75% and 335.77%. Haloxylon ammodendron＇s root system has clear plasticity,especially the two, three and four years old ones, down to 100em nearly,and with the deepth of the earth, the vale shows the trend of decreasing. Two, three and four year - Haloxylon ammodendron system of side root show the same trend of changing, The two year Haloxylon ammodendron＇side root range from 0cm - 90cm, mainly from 60cm - 90cm. Three and four year Haloxylon ammodendron side roots mainly range on 0cm - 30cm and 90cm - 120cm, especially 90 - 120 cm, thus, level roots distribute in the range of 120cm away from the surface of the earth.