現在市場基本有(you)兩種包(bao)(bao)裝(zhuang)(zhuang)形式(shi)，一(yi)種為普通的(de)(de)包(bao)(bao)裝(zhuang)(zhuang)，利(li)用(yong)聚丙稀塑(su)料編織袋(dai)對(dui)大米(mi)進行包(bao)(bao)裝(zhuang)(zhuang)，包(bao)(bao)裝(zhuang)(zhuang)過程(cheng)中(zhong)不(bu)施加任何(he)的(de)(de)保鮮(xian)技術，這種包(bao)(bao)裝(zhuang)(zhuang)對(dui)于(yu)大米(mi)的(de)(de)防(fang)蟲及防(fang)霉等方面(mian)的(de)(de)效果差。還有(you)一(yi)種是(shi)(shi)用(yong)真空(kong)(kong)(kong)(kong)(kong)包(bao)(bao)裝(zhuang)(zhuang)技術對(dui)包(bao)(bao)裝(zhuang)(zhuang)袋(dai)進行抽真空(kong)(kong)(kong)(kong)(kong)，真空(kong)(kong)(kong)(kong)(kong)鈄技術對(dui)大米(mi)的(de)(de)儲存有(you)較好的(de)(de)保鮮(xian)作(zuo)用(yong)，但用(yong)于(yu)大米(mi)自身的(de)(de)形狀及真空(kong)(kong)(kong)(kong)(kong)度的(de)(de)選(xuan)擇并不(bu)合(he)適(shi)，目前(qian)大米(mi)真空(kong)(kong)(kong)(kong)(kong)包(bao)(bao)裝(zhuang)(zhuang)選(xuan)用(yong)的(de)(de)真空(kong)(kong)(kong)(kong)(kong)度一(yi)般在-0.07～-0.09kPa之(zhi)間，只要(yao)真空(kong)(kong)(kong)(kong)(kong)度在范圍(wei)內，所出廠的(de)(de)就(jiu)是(shi)(shi)合(he)格產品。