在水分低胁迫条件下 ,对不同棉花品种根系生长发育和分布规律进行了研究 ,结果表明 ,杂交抗虫棉根系早发易衰 ,常规抗虫棉晚发迟熟 ,中早熟常规棉介于前两者之间 ,耐旱碱棉根系保持持续稳定的增长和衰退过程 Under the conditions of low water stress, root growth and distribution of different cotton cultivars were studied. The results showed that the roots of hybrid cotton had a tendency of early failure, late maturity of conventional cotton and late maturity of conventional cotton, Between them, the root system of drought-resistant cotton maintained a steady and steady growth and decline process