半干旱风沙区抗逆性树种引进试验研究初报

分析了银水牛果、蒙古扁桃、花棒、白刺、蒙古莸、霸王、长柄扁桃、醉鱼草、沙柳、黄柳、乌柳等11种引进灌木树种的成活率,其中：白刺成活率最高为86.2%,花棒和银水牛果成活率较低,分别为20.4%和40%,其他树种的成活率在52.4%～74.6%之间。以成活率为指标将以上树种的抗旱能力分为4个等级：白刺抗旱能力最强,霸王、蒙古扁桃、沙柳、乌柳、醉鱼草次之,黄柳、长柄扁桃、蒙古莸中等,银水牛果、花棒较差;初步得出了比柠条抗旱力强的6种树种,即：白刺、霸王、蒙古扁桃、沙柳、乌柳、醉鱼草。

A Preliminary Study on Introduction Test of Resistant Tree Species in Semiarid and Wind-sand Area

Survival rate of 11 introduced shrub species including silver rabbitberry,Mongolian peach,Hedysarum scoparium,nitraria sibirica Pall,Caryopteris mongholica Bunge,Zygophyllum xanthoxylom Maxim,Prunus pedunculata Pall,Buddleja alternifolia,Salix psammophila,Salix gordejecii and Salix cheilophila Schnejd was analyzed,of which Nitraria sibirica Pall had the maximal value of 86.2%.Hedysarum scoparium and silver rabbitberry were low with 20.4% and 40%,respectively.Others varied from 52.4% to 74.6%.According to survival rate,the drought resistance of above tree species was divided into 4 grades： Nitraria sibirica Pall had the strongest,Zygophyllum xanthoxylom Maxim,Mongolian peach,Salix psammophila,salix cheilophila Schnejd and Buddleja alternifolia were next,Salix gordejecii,Prunus pedunculata Pall,and Caryopteris mongholica Bunge were in middle,and silver rabbitberry and Hedysarum scoparium were poor.Six species were more resistant to drought than Caragana Korshinskii Kom.namely,Nitraria sibirica Pall,Zygophyllum xanthoxylum Maxim,Mongolian peach,Salix psammophila,Salix cheilophila Schnejd and Buddleja alternifolia.