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承德县人工油松林林下草本植物种间关系研究
张桂娟,张金龙,李淑贤,于新友,周国娜,高宝嘉
Interspecific Relations of Herbage Species under Artificial Pinus tabulaeformis Forests
中国农学通报 . 2009, (7): 109 -113 .  DOI: 10.11924/j.issn.1000-6850.2008-1549