北方农业学报 ›› 2015, Vol. 43 ›› Issue (6): 21-21.
谷永丽[1] 杨恒山[2] 王红霞[1]
GU Yongli ,YANG Hengshan,WANG Hongxia (1.Hulunbuir Agricultural Technology Extension and Seruice Center, Halaer 021008,China; 2.College of Agronomy,Inner Mongolia University for Nationalities, Tongliao 028042, China)