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振兴草畜产业──生态大农业发展的必然决择王辉珠,刘存琦,艾克拜尔·阿玛依拉(甘肃农业大学草原系,兰州730070)VitalizingHerbivorousAnimalHusbandry──AnInevitableChoicefortheDevelopmentofEcologicalAgriculture¥.WangHuizhu;LiuCunqi;Aikebail.A;Mayila(GrasslandDept.,GansuAgriculturalUni-versity,henzhou730070