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20.0020.3820.25-1.86%-1.23%华北22.5122.5122.010.00%2.27%华中38.673933.33-0.85%16.02%华南29.7330.4029.10-2.20%2.16%西南33.2733.1532.070.36%3.74%华东3