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

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.