現在(zai)(zai)市場基本有兩種(zhong)包裝(zhuang)(zhuang)(zhuang)形(xing)式(shi)，一(yi)種(zhong)為普通(tong)的包裝(zhuang)(zhuang)(zhuang)，利用(yong)(yong)(yong)聚丙稀塑料編織袋對(dui)大米(mi)進(jin)行(xing)包裝(zhuang)(zhuang)(zhuang)，包裝(zhuang)(zhuang)(zhuang)過程(cheng)中不施加任何的保鮮(xian)技術(shu)，這種(zhong)包裝(zhuang)(zhuang)(zhuang)對(dui)于大米(mi)的防(fang)(fang)蟲及防(fang)(fang)霉等方面的效(xiao)果(guo)差。還有一(yi)種(zhong)是用(yong)(yong)(yong)真空(kong)(kong)包裝(zhuang)(zhuang)(zhuang)技術(shu)對(dui)包裝(zhuang)(zhuang)(zhuang)袋進(jin)行(xing)抽(chou)真空(kong)(kong)，真空(kong)(kong)鈄技術(shu)對(dui)大米(mi)的儲存有較好的保鮮(xian)作用(yong)(yong)(yong)，但用(yong)(yong)(yong)于大米(mi)自身(shen)的形(xing)狀及真空(kong)(kong)度的選擇并不合適，目(mu)前大米(mi)真空(kong)(kong)包裝(zhuang)(zhuang)(zhuang)選用(yong)(yong)(yong)的真空(kong)(kong)度一(yi)般在(zai)(zai)-0.07～-0.09kPa之間，只要真空(kong)(kong)度在(zai)(zai)范(fan)圍內，所出(chu)廠的就是合格產品。