現在市場基本有兩(liang)種(zhong)包(bao)(bao)裝(zhuang)形式(shi)，一種(zhong)為(wei)普通的(de)包(bao)(bao)裝(zhuang)，利用(yong)(yong)(yong)聚丙稀塑料(liao)編織(zhi)袋(dai)對大(da)米(mi)進(jin)(jin)行包(bao)(bao)裝(zhuang)，包(bao)(bao)裝(zhuang)過程中不施(shi)加任何的(de)保(bao)鮮技(ji)術(shu)，這(zhe)種(zhong)包(bao)(bao)裝(zhuang)對于大(da)米(mi)的(de)防蟲及(ji)(ji)防霉等方面的(de)效(xiao)果差。還有一種(zhong)是(shi)用(yong)(yong)(yong)真(zhen)空(kong)(kong)(kong)包(bao)(bao)裝(zhuang)技(ji)術(shu)對包(bao)(bao)裝(zhuang)袋(dai)進(jin)(jin)行抽真(zhen)空(kong)(kong)(kong)，真(zhen)空(kong)(kong)(kong)鈄技(ji)術(shu)對大(da)米(mi)的(de)儲存有較好(hao)的(de)保(bao)鮮作用(yong)(yong)(yong)，但用(yong)(yong)(yong)于大(da)米(mi)自身(shen)的(de)形狀及(ji)(ji)真(zhen)空(kong)(kong)(kong)度的(de)選(xuan)擇并不合(he)適(shi)，目前大(da)米(mi)真(zhen)空(kong)(kong)(kong)包(bao)(bao)裝(zhuang)選(xuan)用(yong)(yong)(yong)的(de)真(zhen)空(kong)(kong)(kong)度一般在-0.07～-0.09kPa之間，只(zhi)要真(zhen)空(kong)(kong)(kong)度在范圍內，所出廠(chang)的(de)就是(shi)合(he)格產品。