現(xian)在(zai)市(shi)場基本(ben)有兩種(zhong)(zhong)包(bao)(bao)(bao)裝(zhuang)形(xing)式，一種(zhong)(zhong)為普通(tong)的(de)包(bao)(bao)(bao)裝(zhuang)，利用(yong)(yong)聚丙(bing)稀塑料編(bian)織袋(dai)對大(da)米(mi)(mi)(mi)進行包(bao)(bao)(bao)裝(zhuang)，包(bao)(bao)(bao)裝(zhuang)過程中不(bu)施加(jia)任何的(de)保鮮(xian)技術，這種(zhong)(zhong)包(bao)(bao)(bao)裝(zhuang)對于大(da)米(mi)(mi)(mi)的(de)防蟲及(ji)防霉(mei)等方(fang)面的(de)效果差。還(huan)有一種(zhong)(zhong)是用(yong)(yong)真(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)包(bao)(bao)(bao)裝(zhuang)技術對包(bao)(bao)(bao)裝(zhuang)袋(dai)進行抽真(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)，真(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)鈄技術對大(da)米(mi)(mi)(mi)的(de)儲存(cun)有較好(hao)的(de)保鮮(xian)作用(yong)(yong)，但用(yong)(yong)于大(da)米(mi)(mi)(mi)自(zi)身的(de)形(xing)狀及(ji)真(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)度(du)的(de)選擇并不(bu)合適，目前(qian)大(da)米(mi)(mi)(mi)真(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)包(bao)(bao)(bao)裝(zhuang)選用(yong)(yong)的(de)真(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)度(du)一般在(zai)-0.07～-0.09kPa之間，只要真(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)度(du)在(zai)范(fan)圍內，所出廠的(de)就是合格產(chan)品(pin)。