現在市場基本有兩種(zhong)包(bao)裝(zhuang)(zhuang)(zhuang)形(xing)式，一(yi)種(zhong)為(wei)普通的包(bao)裝(zhuang)(zhuang)(zhuang)，利用聚丙(bing)稀塑料(liao)編織袋對大米進行(xing)(xing)包(bao)裝(zhuang)(zhuang)(zhuang)，包(bao)裝(zhuang)(zhuang)(zhuang)過程中不(bu)(bu)施加任何的保鮮技(ji)(ji)術，這(zhe)種(zhong)包(bao)裝(zhuang)(zhuang)(zhuang)對于(yu)大米的防蟲(chong)及(ji)防霉(mei)等方面的效果差(cha)。還有一(yi)種(zhong)是用真空(kong)(kong)(kong)包(bao)裝(zhuang)(zhuang)(zhuang)技(ji)(ji)術對包(bao)裝(zhuang)(zhuang)(zhuang)袋進行(xing)(xing)抽真空(kong)(kong)(kong)，真空(kong)(kong)(kong)鈄(tou)技(ji)(ji)術對大米的儲存(cun)有較(jiao)好的保鮮作用，但用于(yu)大米自身的形(xing)狀及(ji)真空(kong)(kong)(kong)度的選(xuan)擇并不(bu)(bu)合適，目(mu)前大米真空(kong)(kong)(kong)包(bao)裝(zhuang)(zhuang)(zhuang)選(xuan)用的真空(kong)(kong)(kong)度一(yi)般(ban)在-0.07～-0.09kPa之間，只要真空(kong)(kong)(kong)度在范圍(wei)內，所出廠的就是合格產(chan)品。