几种灌木在宁夏盐池干旱风沙区的生长适应性评价

Evaluation on Growth Adaptability of Several Shrub Species in Arid and Sandy Area of Yanchi in Ningxia

盐池县是宁夏沙化土地面积最大、风沙危害最严重的地区,为筛选出适宜宁夏盐池干旱风沙区生长的优良植物材料,选用柠条、花棒、梭梭、红柳、紫穗槐5种灌木的一年生裸根苗和沙木蓼、沙柳的一年生扦插枝条作为试验材料,分别种植在盐池县高沙窝林业站和四墩子试验基地,测定其苗木成活率、地径、苗高、新梢粗、新梢长等指标,结果表明:红柳、沙木蓼在干旱风沙区的生长适应性最好,梭梭和花棒的生长适应性最差。

Yanchi County is the region of the largest area of desertification and the most severe harm of dust storm in Ningxia. In order to select fine varieties of plants that are suitable for the growth in the arid and sandy area of Yanchi in Ningxia,the paper selected 5 species of shrubs of one year old bare-rooted seedlings of Caragana korshinskii,Hedysarum scoparium,Haloxylon ammodendron,Tamarix ramosissima and Amorpha fruticosa and one year old cutting branches of Atraphaxis bracteata and Salix psammophila as test materials,planted in Gaoshawo Forestry Station and Sidunzi Test Base respectively and measured the indexes of the survival rate,ground diameter,height,new shoot thickness and length. The outcomes show that the growth adaptability of Tamarix ramosissima and Atraphaxis bracteata in arid and sandy area are the best and Haloxylon ammodendron and Hedysarum scoparium are the worst.