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21.5021.3822.630.56%-4.99%华北23.2925.6026.06-9.02%-10.63%华中39.3339.6735.33-0.86%11.32%华南29.4729.8028.33-1.11%4.02%西南34.5835.0532.28-1.34%7.