胡杨是一种耐盐碱能力较强的乔木树种,利用胡杨改造盐碱地效果较好。胡杨育苗是否成功与种子的质量直接有关,而胡杨种子质量的好坏与胡杨种子的采集、调制、运输及贮藏技术关系密切。胡杨为雌雄异株,蒴果成熟后容易开裂,因此采种前必须选好母树,注意观察果穗变化情况。采种过早,种子未成熟;采种过晚,种子巳飞散。七月上旬,额济纳旗就有个别胡杨母树的蒴果成熟,到七月中旬,大部分母树的蒴果由绿变黄,个别蒴果顶端开裂,露出白色绒絮,用手一捻,绒絮和种子自然分开,种子呈紫红色,这时应马上组织采集。在采种过程中避免掠青和在幼树上采种,同时还必须注意保护母树。胡杨枝条脆,易于折断,采种时要尽量折取果穗集中的结果小枝,防止将大枝剪 Populus euphratica is a kind of tree species with strong saline-alkali tolerance, which is better by using Populus euphratica to transform saline-alkali soil. The success of Populus euphratica seedlings and seed quality is directly related to the quality of Populus euphratica seeds and Populus euphratica collection, modulation, transport and storage technology is closely related. Populus dioecious, the capsule is easy to crack after maturity, the mother tree must be selected before planting, pay attention to observe the changes of ear. Early planting, immature seeds; seed too late, the seeds have been scattered. In early July, the Ejin flag had mature capsules of individual Populus euphratica trees. By mid-July, the capsules of most of the tree trees turned green from yellow to green, and the tops of individual capsules cracked revealing white fleece, hand twisting, fluff and seed nature Separation, the seeds were purple, then the tissue should be collected immediately. Avoid sweeping greens and seedlings in saplings during harvesting, and care must also be taken to protect mother trees. Populus crisp branches, easy to break, when collecting seed try to get the focus of the results of twigs to prevent the big pruning shears