現在(zai)(zai)市(shi)場(chang)基本有兩種(zhong)(zhong)包(bao)(bao)裝形(xing)(xing)式，一種(zhong)(zhong)為普通的(de)包(bao)(bao)裝，利用(yong)聚(ju)丙(bing)稀塑料編織袋(dai)對大米(mi)進(jin)(jin)行(xing)包(bao)(bao)裝，包(bao)(bao)裝過(guo)程(cheng)中不(bu)施加任何(he)的(de)保(bao)鮮技(ji)術(shu)，這種(zhong)(zhong)包(bao)(bao)裝對于大米(mi)的(de)防(fang)蟲及防(fang)霉等方面的(de)效果差。還有一種(zhong)(zhong)是(shi)用(yong)真(zhen)(zhen)空(kong)(kong)(kong)包(bao)(bao)裝技(ji)術(shu)對包(bao)(bao)裝袋(dai)進(jin)(jin)行(xing)抽真(zhen)(zhen)空(kong)(kong)(kong)，真(zhen)(zhen)空(kong)(kong)(kong)鈄技(ji)術(shu)對大米(mi)的(de)儲存有較好(hao)的(de)保(bao)鮮作用(yong)，但用(yong)于大米(mi)自(zi)身(shen)的(de)形(xing)(xing)狀及真(zhen)(zhen)空(kong)(kong)(kong)度的(de)選擇(ze)并不(bu)合適，目前大米(mi)真(zhen)(zhen)空(kong)(kong)(kong)包(bao)(bao)裝選用(yong)的(de)真(zhen)(zhen)空(kong)(kong)(kong)度一般在(zai)(zai)-0.07～-0.09kPa之間，只要真(zhen)(zhen)空(kong)(kong)(kong)度在(zai)(zai)范(fan)圍內，所出廠(chang)的(de)就(jiu)是(shi)合格(ge)產品。