最近,筆者在壽光市古城街道、孫家集街道、青州市等地采訪時,不少種植甜椒的菜農反映近期爛稈現象很嚴重,嚴重的導致死棵。
筆bi者zhe在zai幾ji個ge棚peng內nei觀guan察cha甜tian椒jiao爛lan稈gan症zheng狀zhuang,發fa現xian主zhu要yao是shi兩liang種zhong病bing害hai所suo致zhi,有you些xie植zhi株zhu是shi兩liang種zhong病bing害hai混hun發fa導dao致zhi爛lan稈gan。當dang前qian引yin起qi甜tian椒jiao發fa生sheng爛lan稈gan的de主zhu要yao有you細xi菌jun性xing軟ruan腐fu病bing和he灰hui黴mei病bing。
一、細(xi)菌(jun)性(xing)軟(ruan)腐(fu)病(bing)。主(zhu)要(yao)為(wei)害(hai)果(guo)實(shi)和(he)莖(jing)稈(gan),多(duo)從(cong)整(zheng)枝(zhi)後(hou)造(zao)成(cheng)的(de)傷(shang)口(kou)開(kai)始(shi)侵(qin)染(ran),病(bing)部(bu)初(chu)生(sheng)水(shui)浸(jin)狀(zhuang)暗(an)綠(lv)色(se)斑(ban),後(hou)變(bian)褐(he)軟(ruan)腐(fu),病(bing)部(bu)腐(fu)爛(lan)後(hou)表(biao)麵(mian)呈(cheng)膜(mo)狀(zhuang),而(er)且(qie)病(bing)部(bu)多(duo)散(san)發(fa)惡(e)臭(chou)味(wei),稍(shao)遇(yu)外(wai)力(li)就(jiu)會(hui)脫(tuo)落(luo)。幼(you)苗(miao)染(ran)病(bing)亦(yi)多(duo)從(cong)傷(shang)口(kou)開(kai)始(shi)染(ran)病(bing),呈(cheng)水(shui)浸(jin)狀(zhuang)軟(ruan)腐(fu),終(zhong)使(shi)幼(you)苗(miao)倒(dao)折(zhe)死(si)亡(wang)。
二、灰黴病。甜椒灰黴病的致病原因是多方麵的,低溫高濕正是早春的氣候特點,病菌發病適溫是23℃,加jia之zhi當dang前qian菜cai農nong放fang風feng不bu及ji時shi,澆jiao水shui多duo,棚peng內nei濕shi度du必bi然ran大da,這zhe是shi灰hui黴mei病bing流liu行xing的de主zhu要yao原yuan因yin。有you些xie菜cai農nong把ba防fang治zhi重zhong點dian放fang在zai了le疫yi病bing和he白bai粉fen病bing的de防fang治zhi上shang,用yong的de藥yao物wu不bu能neng兼jian治zhi灰hui黴mei病bing,錯cuo過guo了le防fang的de時shi機ji,導dao致zhi當dang前qian灰hui黴mei病bing暴bao發fa流liu行xing。
yishangzheliangzhongbinghaidouxihuangaoshihuanjing,jiangdipengneishidushifangzhizheliangzhongbinghaideguanjian,tongguodimofugai,kongzhijiaoshui,jishifangfeng,yanwujihefenchenjifangzhibingweizhu,penwufangzhiweifudengcuoshilaijiangdishidu。ruoyishangliangzhongbinghaihunfa,jianyicainongyongnongyonglianmeisuhuoyekuzuohunpuhaiyinhuoshileshipenwufangzhi。
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