Journal of Northern Agriculture ›› 2018, Vol. 46 ›› Issue (4): 128-128.
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XU Weiping1, ZHANG Ying1, ZHANB Lin2 (1.State Key Laboratory of Reproductive Regulation and Breeding of Grassland Animals, Inner Mongolia University, Hohhot 010021 China;2.Inner Mongolia Mengcao Seed Industry Science and Technology Research Institute Co. Ltd,Horinger 010051,China)