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21.6321.3822.251.17%-2.79%华北19.9622.2224.91-10.17%-19.87%华中39.3338.6734.671.71%13.44%华南29.9729.7026.500.91%13.09%西南33.5033.6833.88-0.53%-1