最zui近jin記ji者zhe在zai走zou訪fang過guo程cheng中zhong了le解jie到dao隨sui著zhe氣qi溫wen的de回hui升sheng,春chun茬cha辣la椒jiao心xin葉ye皺zhou縮suo現xian象xiang嚴yan重zhong,很hen多duo菜cai農nong認ren為wei是shi病bing毒du病bing,可ke是shi防fang治zhi效xiao果guo並bing不bu理li想xiang。造zao成cheng辣la椒jiao心xin葉ye皺zhou縮suo的de原yuan因yin有you哪na些xie呢ne?是shi不bu是shi一yi定ding是shi病bing毒du病bing造zao成cheng的de呢ne?記ji者zhe就jiu此ci谘zi詢xun了le本ben報bao特te聘pin專zhuan家jia邵shao樹shu策ce。邵shao老lao師shi認ren為wei造zao成cheng辣la椒jiao心xin葉ye皺zhou縮suo的de原yuan因yin除chu了le病bing毒du病bing外wai,還hai有you蟎man蟲chong為wei害hai、藥害等。而且不同原因導致的心葉皺縮症狀表現不一,要加以區分,正確防治。
辣椒感染花葉病毒病後表現:花葉病毒病分為輕型花葉和重型花葉。輕型花葉病葉表現明脈輕微褪綠,或現濃、淡綠相間的斑駁,病株無明顯畸形或矮化,不落葉;辣椒感染重型花葉病毒病後葉片出現黃綠斑駁,葉麵凹凸不平、葉脈皺縮。造成辣椒心葉皺縮主要是重型花葉病毒病,葉片出現黃綠斑駁和皺縮。出現黃綠斑駁是區分的重要特征。
防治對策:可以噴灑病毒A500倍混寧南黴素300倍、0.5%菇類蛋白多糖水劑200-300倍、3.85%病毒必克水乳劑600倍。《農業知識》瓜(gua)果(guo)菜(cai)中(zhong)介(jie)紹(shao)多(duo)羥(qiang)基(ji)雙(shuang)萘(nai)醛(quan)防(fang)治(zhi)病(bing)毒(du)病(bing)。原(yuan)理(li)是(shi)噴(pen)灑(sa)在(zai)植(zhi)物(wu)葉(ye)片(pian)後(hou)既(ji)能(neng)夠(gou)直(zhi)接(jie)抑(yi)製(zhi)病(bing)毒(du)複(fu)製(zhi),還(hai)能(neng)通(tong)過(guo)誘(you)導(dao)寄(ji)主(zhu)產(chan)生(sheng)誘(you)導(dao)抗(kang)性(xing)間(jian)接(jie)阻(zu)止(zhi)病(bing)毒(du)侵(qin)染(ran),使(shi)該(gai)化(hua)合(he)物(wu)具(ju)有(you)治(zhi)療(liao)作(zuo)用(yong)與(yu)預(yu)防(fang)作(zuo)用(yong)。實(shi)驗(yan)在(zai)接(jie)種(zhong)病(bing)毒(du)前(qian)24小時噴藥,對西葫蘆病毒病和玉米矮化花葉病的相對預防效果分別是83.7%和76.7%,預防效果較好。
蟎蟲為害辣椒心葉症狀:蟎蟲易為害辣椒的嫩葉、嫩莖,受害葉片背麵呈灰褐色或黃褐色,且具有油質光澤或油浸狀,葉片邊緣向下卷曲。受害的嫩莖、nenyebianweihuanghese,niuqujixing,yanzhongdezhizhudingbuganku。ruoweihaihualei,yanzhongzhebukaihuazuoguo。shouhaibuweijuyouyouzhiguangzeshiqizhongyaoshibietezheng。ciwai,manchongyeshibingdubingdezhongyaochuanbotujing,yingjiaqiangfangzhi。
防治對策:可噴用1.8%阿維菌素乳油3000-4000倍液,1%苦參堿600倍液。重點噴灑嫩葉背麵、花器及幼果。
藥害:yaohaifenweiliangzhong,yishijisuzhongdu,haiyouyizhongjiushipenyaonongduguodazhijiechanshengdeyaohai。jisuzhongduzhuyaoshiyumiaoqiweikongzhizhizhuchangshipensajisuerchuxiande。yincizhuyaofashengzaishengchangdianfujinyounendexinyeshang,yemaifanzhuanniuqu,yepianhoushijiangying,yansebianshen,yeyuanshangjuan。erpenyaonongdudadaozhideyaohaiquanzhudoukefasheng,xinyeyouqiyanzhong。
防治對策:藥害可以噴施愛多收6000倍混加核苷酸葉肥500倍加以緩解。
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