日灼病又名日燒病,為彩色甜椒常見病,多在夏季發生,輕時零星發病,嚴重時病果可達30%,甚至更高。
症狀:youguohechengshuguojunkeshouhai。guoshixiangyangmianbeitaiyangzhaoshezhuoshang,chuqituilv,yihoubingbuguoroushishuibianbo,xingchengyouguangzejinsitoumingdegezhizhuang,jierbingbukuoda,shaoaoxian,zuzhihuaisibianying,yipo裂。病部易受病菌感染,生長黑色或粉色黴層,甚至腐爛。
病因:cibingshiyizhongshenglibinghai。zhuyaoyinyepianzheyangbuhao,guoshishouqianglieyangguangzhishe,yinqiguopiwendushangsheng,shuifendaliangzhengfashiguomianjubuwendushenggaoerzhuoshang。tongchang,guoshidexiangyangmianyubeiyinmianwenchayuda,fabingyuzhong。chunjizaipeicaisetianjiao,guoshipengdahecaishouwangjizhengzhishengxiahechuqiu,ruturangqueshui,yepianzheyangbuhao,tianqichixuganre,huoyu、露、霧天後暴晴暴熱,易引發此病。栽植過稀,缺少水肥,植株生長不良,病蟲造成缺株,或植株早期落葉,則發病較重。
防治方法:(1)根據品種特性適當增加種植密度。(2)實行與高稈作物間作或采用遮陽網遮陽種植。(3)增施磷鉀肥,促使果實發育。開花結果期,及時、均勻澆水,保持地麵濕潤,以減少發病。(4)及時防治病蟲害,防止因病蟲危害引起早期落葉。
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