大米吸濕性很強，營養物質代謝速度快，而且密度大
，積熱不易散發，最易陳化變質、生黴和生蟲
，是夏天較難保管的成品糧。要使大米安全度夏，就必須延緩大米的陳化，防止大米黴變和生蟲。
　　 一、保持大米優良品質，延緩陳化。 大da米mi由you於yu營ying養yang物wu質zhi在zai高gao溫wen高gao濕shi的de條tiao件jian下xia代dai謝xie加jia速su，品pin質zhi會hui發fa生sheng劣lie變bian，失shi去qu油you脂zhi性xing，失shi去qu糯nuo性xing，清qing香xiang味wei消xiao失shi
，出chu現xian大da量liang碎sui米mi

，手shou捏nie米mi粒li甚shen至zhi成cheng粉fen

，降jiang低di使shi用yong價jia值zhi。大da米mi隻zhi能neng在zai陰yin涼liang通tong風feng的de地di方fang自zi然ran降jiang濕shi降jiang水shui
，不bu能neng高gao溫wen烘hong幹gan或huo陽yang光guang直zhi接jie曝pu曬shai。因yin為wei大da米mi腰yao部bu皮pi薄bo
，組zu織zhi疏shu鬆song，水shui分fen出chu入ru快kuai，驟zhou然ran降jiang溫wen降jiang水shui會hui使shi大da米mi“爆腰”
，jiyaobudaliangliewen，yanzhongshiduanweiliangjiehuosuilie。ziranjiangwenjiangshuihoudedami，yingdangcunfangzaiganzaotongfengdedifang，mibizairongqihuocangfangneizhuzang，jianshaoyukongqidejiechuheyangguangdezhaoshe
，jianruodamiyingyangwuzhidedaixie，yanhuandamidechenhuasudu，baochiqingxiangkekoudepinzhi。
　　 二、diwenqueyangmibifangshengmei。damijingguojiangwenjiangshuiyihou
，xuanzeyitianzhongqiwenzuidideshihoumibiqilai。kexuanyongsuliaodaimibi，badaikoutangsihuoyongshengzhajin，yanmigejuewaibukongqijinru，shidaineixingchengziranqueyangzhuangtai。zaibamidaifangrurongqihuoliangcangnei，shangmianyagaiqitaliangshi，shidamichuyuganzaodiwenbiguangdehuanjing，waimianshirekongqibuyiqinru，damibaochidiwendishuifen
，buhuishengmei。yekeyibajiangwenjiangshuihoudedamizhijiezhuangrurongqihuoliangcang，dibujisizhoupuhaofangchaowu
，shangmiangaiyicengsuliaobuhuobaozhi，zaishangmianyagaidiwendeganxishatuhuojiejingganzaodemaikang，bingbashatuhuomaikangyashi
，buliufengxi，zheyangyekeyiqidaofangregechaozudangyangguangzhaoshedezuoyong
，damibaochiganzaodiwen，buhuifarefanchaoshengmei。
　　 三、低藥量防生蟲。用塑料袋或容器、糧倉貯存的大米，為了防止生蟲

，可在密閉以前放入少量的磷化鋁藥片，每立方米1-3克，然後把袋口或容器
、liangcangmibi。linhualvpianhuizaidiwendiyangdezhuangtaixiahuanmandishifangchulinhuaqingqiti，keyouxiaodiyizhihaichongfasheng。jishishuifengaoxiededami，zailinhuaqingqitidezuoyongxia，yenengbaozhengzaiyinianneibushengchong。shiyongshikecongdaihuorongqineiquchuyibufen，ranhoumifenghao。quchudedamichangfang3天，磷化氫氣體就會散盡
，不留絲毫殘毒
，即可食用。