菌核病是近年來沿海地區早春大棚茄子上的重要病害,從苗期至成株期均會發病,以開花結果初期危害最重,常造成門茄、對茄的花蕾和幼果腐爛脫落,主莖及分枝枯死,早期產量銳減。
發病症狀 苗(miao)期(qi)發(fa)病(bing)始(shi)於(yu)莖(jing)基(ji)部(bu),病(bing)部(bu)初(chu)呈(cheng)淺(qian)褐(he)色(se)水(shui)漬(zi)狀(zhuang),濕(shi)度(du)大(da)時(shi)長(chang)出(chu)白(bai)色(se)棉(mian)絮(xu)狀(zhuang)菌(jun)絲(si),致(zhi)茄(qie)苗(miao)軟(ruan)腐(fu)而(er)死(si)。成(cheng)株(zhu)期(qi)葉(ye)片(pian)受(shou)害(hai),初(chu)呈(cheng)水(shui)漬(zi)狀(zhuang),後(hou)出(chu)現(xian)褐(he)色(se)圓(yuan)斑(ban),濕(shi)度(du)大(da)時(shi)長(chang)出(chu)白(bai)色(se)菌(jun)絲(si);花蕾、花柄受害,先呈水漬狀濕腐,後脫落;果實受害通常始於果麵殘留的花瓣處,初呈水漬狀,後呈黃褐色腐爛狀,濕度大時長出白色菌絲,後期形成菌核;jingbushouhai,zhuyaofashengzaimenqieguobingzheshengchufujinhuoduiqiesuozaicezhishang,duoyoukaibaidehuahuoyouguoshangdebingjunkuosansuozhi,bingbuchuchengshuizizhuangqieshangxiakuozhan,shaoaoxian,houchengqianhuihuangse,picengfulan,houqizongpoujinggankejiansuibuyouheiseshufenzhuangjunhe,zhizhuzishouhaichuxiangshangkusi。
發病規律 qiezijunhebingweizhenjunxingbinghai,bingjunzhuyaoyijunhezaiturangzhongyuedong,qiezidingzhihoujunhemengfa,chouchuzinangpan,sanfazinangbaozi,suiqiliuchuandaojizhushang,congshangkouhuozirankongkouqinruxingchengchuqinran。zhihoubingzhuyujianzhujiechu,huobinghua、病果軟腐後落在健部均會引起發病,成為再侵染的途徑之一。早春連續陰雨,棚內低溫高濕發病重。
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