播种深度对青藏铁路沙区植物白刺、油蒿、沙棘存活和生长的影响  

Influences of Sowing Depth on Survival and Growth of Nitraria tangutorum,Hippophae rhamnoides and Artemisia ordosica in Sandy Lands Along Qinghai-Tibet Railway

作　　者：任珺 陶玲[1,2] 赵迎迎[1,2] 余方可[1,2] 

机构地区：[1]兰州交通大学环境与市政工程学院环境生态研究所,甘肃兰州730070 [2]甘肃高等学校环境科学与技术实验教学示范中心,甘肃兰州730070

出　　处：《西北林学院学报》2012年第2期13-17,共5页Journal of Northwest Forestry University

基　　金：铁道部科技研究开发计划课题(2008G013-B);甘肃省自然科学基金(1014RJZA043)

摘　　要：研究了青藏铁路沙区植物白刺、油蒿、沙棘对不同播种深度的生长反应。结果表明:在播种2a和3a时,3种沙漠植物的成活率、植株高度和冠幅都随播种深度的增加而增加。油蒿在播种深度为6cm时的成活率最高,白刺在播种深度为2cm时植株高度最大,白刺的冠幅在播种深度为4cm时达到最大值。沙棘的植株高度和冠幅在播种深度为4cm时达到最大值。播种深度对白刺、沙棘和油蒿的存活和生长有显著的影响。研究结果对于青藏铁路沙区植被的人工恢复有一定的指导意义。Effects of sowing depth on the growth responses of Nitraria tangutorum, Hippophae rhamnoides and Arternisia ordosica in the sand areas along the Qinghai-Tibet Railway were investigated. The results showed that the survival rate, height and crown width of three plants increased with the sowing depth after 2, 3 years of sowing. A. ordosica performd the highest survival rate under sowing depth of 6 cm, N. tangutorurn performed highest height under sowing depth of 2 era, and the height and crown width of H. rhamnoides were the biggest under sowing depth of 4 cm. Indicating that the sowing depth could significantly influence the survival and growth of three plants.

关 键 词：青藏铁路 白刺 沙棘 油蒿 沙区 

分 类 号：S725.72[农业科学—林木遗传育种]