ougenhejiangmiaowentishixiguamiaoqiyichuxiandeliangzhongshenglibinghai。guamiaofashengougenhou，genbubufaxingenhuobudinggen，genpifaxiuhoufulan
，zaochengdishangbuweinian，yeyuankujiao。一般持續過低的地溫加上澆水過量或遇陰雨天氣
，苗床溫度過低，就易發生漚根；僵jiang苗miao則ze表biao現xian為wei幼you苗miao生sheng長chang量liang小xiao，展zhan葉ye慢man，葉ye片pian灰hui綠lv增zeng厚hou
，子zi葉ye和he真zhen葉ye變bian黃huang，根gen發fa黃huang。瓜gua農nong要yao想xiang防fang治zhi生sheng理li性xing病bing害hai，就jiu要yao控kong製zhi好hao育yu苗miao環huan境jing
，一yi是shi育yu苗miao的de床chuang土tu要yao選xuan用yong新xin土tu
，配pei製zhi營ying養yang土tu的de肥fei料liao要yao充chong分fen發fa酵jiao腐fu熟shu；二是育苗的溫度最好控製在28℃～30℃，夜間不低於18℃；三是苗床白天應加強通風換氣，夜間做好保溫。尤其在低溫陰雨，光照不足時，更要把握好溫度，保證育苗的晝夜溫差在5℃～8℃之間；四是苗期水分管理應根據苗床濕度和天氣而定

，嚴防大水漫灌。

苗期非生理病害
，猝倒病
、likubingheguobanbingfashengdejilvxiangduijiaogao。xiguayoumiaogenjingbuyoushuijinzhuangbingban，zhihoubingbuzhujianbianchenghuanghesegankushousuo，wangwangziyeshangweidiaowei，youmiaojiturandaodidexianxiang
，jiushidianxingdecudaobing。likubingduozaichuangwenjiaogaoshihuoyumiaohouqifasheng，zhuyaoweihaiyoumiaojingjibuhuodixiagenbu。guamiaohuanbingchuqizaijingjibuchuxiantuoyuanxinganhesebingban，zhujianxiangliaoxian
，kuozhanhouraojingyizhou

，zhijingbuweisuogankuhouguamiaosiwang。fangzhizheliangzhongbinghaiyingyaozuohaomiaochuangheyingyangtudeyaojichuli，yibanmeipingfangmimiaochuangyong40%多菌靈或50%福美雙可濕性粉劑15～20克，與苗床土混勻。如苗床內已發現病苗，應及時拔除
，並在苗床上撒幹草木灰
，立即噴藥防止蔓延。