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20.7520.8822.13-0.62%-6.24%华北20.5919.9423.913.26%-13.89%华中40.3340.6734.67-0.84%16.33%华南29.8030.3029.00-1.65%2.76%西南33.0832.9734.670.33%-4.