表：全国样本饲料企业玉米周度库存（单位：天）地区本周上周去年同期周环比较去年同比东北19.5019.3817.380.62%12.20%华北23.8222.1017.577.78%35.57%华中34.003330.673.03%10.86%华南29.6029.1727.931.47%5.98%西南28.1327.2528.423.23%-1.02%华东26