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Gradually drought on Photosynthesis and Fluorescence Characteristics in Peony
Zhang feng , Kong Xiangsheng, Fan Zhiye, Zhao Yongtao, Shen Xianglei
Chinese Agricultural Science Bulletin . 2008, (12): 251 -255 .  DOI: 10.11924/j.issn.1000-6850.2008-0817