几种新引进植物在盐池沙地中的适应性研究

Research on the Adaptability of Several Newly Introdued Plants Grown on Sandy Land of Yanchi County of Ningxia

针对火炬树、胡杨、互生叶醉鱼草等8个新引进树种进行引种适应性研究,结果表明:(1)在8种引种植物中,从成活率和保存率指标来衡量,适宜在该地区生长的树种有火炬树、互生叶醉鱼草、蒙古莸、沙地柏、沙木蓼、饲料桑和东疆沙拐枣。(2)通过数据统计分析表明,除了胡杨之外,其它树种均能在不需要任何保护措施的条件下正常生长、越冬渡夏。(3)除了胡杨之外,其它树种在试验区表现出耐干旱、耐贫瘠,其中互生叶醉鱼草、沙木蓼、东疆沙拐枣还具有速生和稳定性的特点。(4)在无任何防寒措施的条件下,几乎无枯稍和冻害现象发生,说明所有引种树种有着抗寒性的特点。(5)在降水量小,蒸发量大和风大的条件下,除了胡杨之外,其它引种树种均表现出具有较强抗旱性的特点。

The authors studied the adaptability of 8 newly introduced plant species including Rhus typhina,Populus euphratica,Buddleja alternifolia,Caryopteris mongolica,Sabina vlugaris,Atraphaxis bracteata,Morus alba and Calligonum klementzii. The result were as follows:(1)From the viewpoints of survival rate and preserve ratio,all these species,except Populus euphratica,were adaptable to grow in Yanchi.(2)The results of statistical analysis showed that all these species,except Populus euphratica,could grow,pass winter and summer normally without any preservative countermeasures. (3)All these species,except Populus euphratica,showed the characteristics of drought-tolerance and could grow under poor site conditions. Buddleja alternifolia,Atraphaxis bracteata and Calligonum klementzi had also the characteristics of fast-growing and stability.(4)Under the condition without any defrost countermeasures,these species did not suffer from top drying or freezing injury,which showed all these species had strong cold-tolerance. (5) Under the conditions of poor rainfall,high evaporation and strongly windy,all these except Populus euphratica,showed higher drought-tolerance.