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Effect of Continuous Cropping on Growth and Activities of Enzymes in roots
of American Ginseng
Zhao Xiaomeng, Zhang Xuesong, Qi Jianjun, Zhou Lili, Li Xian’en
Chinese Agricultural Science Bulletin . 2009, (13): 103 -107 .  DOI: 10.11924/j.issn.1000-6850.2009-0666