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Effect of soil extracts with different pH values on the germination and seedling growth of alfalfa
魏晓斌 徐安凯 王志锋 于洪柱 孙启忠
Chinese Agricultural Science Bulletin . 2013, (15): 60 -67 .  DOI: 10.11924/j.issn.1000-6850.2012-4170