Journal of Northern Agriculture ›› 2015, Vol. 43 ›› Issue (6): 32-32.
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YANG Yang,LI Zhiqiang,LIU Jun,LI Yue,YAO Yu ,GAO Wa,SUN Guoliang (1.Chengdu Hua Hong Ecological Agriculture Science & Technology Limited Company, Dujiangyan 611830, China; 2.Inner Mongolia Soil and Fertilizer Station, Hohhot 010011, China; 3.Inner Mongolia Wuchuan County Agricultural Technology Extension Center, Hohhot 011700, China)