北方农业学报 ›› 2014, Vol. ›› Issue (5): 89-89.
闫文文[1] 郭顺美[2] 李达[1] 张文柱[2] 刘瑞芳[2] 杨健[2]
YAN Wen wen, GUO Sun me, LI Da, ZHANG Wen zhu, LIU Rui fang, YANG Jian (1.Hechuang Agricultural Science and Technology Research Center in Hohhot, Hohhot 010010,China;2.The training center of Agricuhure Occupation and Skill in Hohhot, Hohhot 010010,China)