現在市場基(ji)本有兩種(zhong)(zhong)包(bao)裝(zhuang)形式，一種(zhong)(zhong)為普通的(de)包(bao)裝(zhuang)，利用(yong)聚丙稀塑料編(bian)織袋對大米進行包(bao)裝(zhuang)，包(bao)裝(zhuang)過程中不(bu)施加任何(he)的(de)保(bao)鮮(xian)技術，這種(zhong)(zhong)包(bao)裝(zhuang)對于(yu)大米的(de)防蟲及(ji)防霉等(deng)方面的(de)效果(guo)差。還(huan)有一種(zhong)(zhong)是(shi)用(yong)真(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)包(bao)裝(zhuang)技術對包(bao)裝(zhuang)袋進行抽真(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)，真(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)鈄技術對大米的(de)儲存有較好的(de)保(bao)鮮(xian)作用(yong)，但用(yong)于(yu)大米自身的(de)形狀及(ji)真(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)度的(de)選擇并不(bu)合適，目前大米真(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)包(bao)裝(zhuang)選用(yong)的(de)真(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)度一般在-0.07～-0.09kPa之間，只(zhi)要真(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)度在范(fan)圍內(nei)，所出廠的(de)就是(shi)合格產品。