定西市生物发酵床养猪现状
Developing（2010）
Abstract
<正>一、定西市生物发酵床养猪现状定西市位于甘肃省中部,属黄土高原丘陵沟壑干旱半干旱区,全市辖6县1区。主要种植的粮食作物有小麦、豆类、玉米、马铃薯、糜谷、胡麻等,其它作物有蔬菜和青饲草
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