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20.8821.2522.25-1.74%-6.16%华北19.9419.2723.913.48%-16.60%华中40.674034.671.68%17.31%华南30.3030.1329.230.56%3.66%西南32.9733.5735.07-1.79%-5.99%华