現在(zai)市場基(ji)本有兩種(zhong)(zhong)包(bao)(bao)裝(zhuang)(zhuang)形式(shi)，一種(zhong)(zhong)為(wei)普(pu)通(tong)的包(bao)(bao)裝(zhuang)(zhuang)，利用聚丙(bing)稀(xi)塑料編織袋對大米(mi)(mi)進行(xing)包(bao)(bao)裝(zhuang)(zhuang)，包(bao)(bao)裝(zhuang)(zhuang)過程中不(bu)施加任(ren)何的保鮮技術，這種(zhong)(zhong)包(bao)(bao)裝(zhuang)(zhuang)對于(yu)大米(mi)(mi)的防(fang)蟲及(ji)防(fang)霉等方面的效果差。還有一種(zhong)(zhong)是(shi)用真空(kong)(kong)包(bao)(bao)裝(zhuang)(zhuang)技術對包(bao)(bao)裝(zhuang)(zhuang)袋進行(xing)抽真空(kong)(kong)，真空(kong)(kong)鈄技術對大米(mi)(mi)的儲存有較好的保鮮作用，但用于(yu)大米(mi)(mi)自身(shen)的形狀及(ji)真空(kong)(kong)度的選擇并(bing)不(bu)合適，目前大米(mi)(mi)真空(kong)(kong)包(bao)(bao)裝(zhuang)(zhuang)選用的真空(kong)(kong)度一般在(zai)-0.07～-0.09kPa之間，只要(yao)真空(kong)(kong)度在(zai)范圍內，所出廠的就是(shi)合格產品。