Xu Kaiwei,Petri Penttinen,Chen Yuanxue,et al. Symbiotic Efficiency, Genetic Diversity and Phylogeny of the Rhizobia Isolated from Leucaena Leucocephala in Arid-hot River Valley Area in Panxi,Sichuan , China[EB/OL]. Beijing:Sciencepaper Online[2011-03-28]. http://www.paper.edu.cn/releasepaper/content/201103-1053. 此文件来自 中国科技论文在线 请勿作用于商业用途!