防治方法:首先要增強樹勢,多施磷、鉀肥,並及時清除田間病葉,減少病源菌。發病初期及新梢帛發期,可噴灑65%多菌靈可濕性粉劑600倍液或50%多菌靈可濕性粉劑800—1000倍液,每隔10—15天,連續噴藥2—3次。
枇(pi)杷(pa)炭(tan)疽(ju)病(bing)。主(zhu)要(yao)為(wei)害(hai)果(guo)實(shi),貯(zhu)藏(zang)過(guo)程(cheng)中(zhong)如(ru)濕(shi)度(du)大(da)則(ze)發(fa)生(sheng)嚴(yan)重(zhong)。此(ci)病(bing)初(chu)期(qi)侵(qin)染(ran)果(guo)實(shi),病(bing)斑(ban)淺(qian)褐(he)色(se)小(xiao)圓(yuan)點(dian),水(shui)漬(zi)狀(zhuang),後(hou)期(qi)逐(zhu)漸(jian)變(bian)橢(tuo)圓(yuan)形(xing),深(shen)褐(he)色(se),病(bing)斑(ban)凹(ao)陷(xian),上(shang)長(chang)密(mi)生(sheng)淡(dan)紅(hong)色(se)小(xiao)點(dian),後(hou)變(bian)小(xiao)黑(hei)點(dian),呈(cheng)同(tong)心(xin)輪(lun)紋(wen)狀(zhuang)排(pai)列(lie),直(zhi)至(zhi)腐(fu)爛(lan)。病(bing)菌(jun)以(yi)菌(jun)絲(si)體(ti)在(zai)病(bing)果(guo)上(shang)越(yue)冬(dong),翌(yi)年(nian)春(chun)季(ji)產(chan)生(sheng)孢(bao)子(zi),靠(kao)風(feng)雨(yu)傳(chuan)播(bo)。果(guo)實(shi)成(cheng)熟(shu)期(qi)遇(yu)高(gao)溫(wen)多(duo)雨(yu)則(ze)為(wei)害(hai)嚴(yan)重(zhong)。
防治櫞杷炭病應加強栽培管理,在冬季修剪是摘除病果,並集中燒毀。發病安期噴灑1∶1∶200倍波爾多液,或80%大生可濕性粉劑400—600倍液,或70%代森錳鋅粉劑500倍液。每隔10—15天噴1次,連續噴2次以上。
枇杷葉斑病,該病表現三種類型。
1、灰斑病:zaiyepianshangfabing,chuqibingbandanhese,yuanxing,houbianhuibaise,bingjianbufenjiemingxian,youjiaoxiazhaideheihesehuandai,zhongyanghuibaisezhihuihuangse。guoshishouhaihouchuxianmingxianaoxiandeyuanxingzihesebingban,shangsanshengheisexiaodian。qinhaiyepiandebingbanyoujixingxinghehuanmanxinglianglei,jixingxingchangyinqiyepianjiaoku,luoye。qinhaizhiganderunbanyuzhiganbingxiangsi,youliujiaoxinghegankuxinglianglei。huibanbinghainengweihaiguoshi。
2、角斑病:在zai葉ye片pian上shang發fa病bing初chu期qi出chu現xian小xiao褐he點dian,多duo呈cheng多duo角jiao形xing,周zhou圍wei有you黃huang色se暈yun環huan。病bing斑ban以yi葉ye脈mai為wei界jie,多duo愈yu合he成cheng大da病bing斑ban,上shang長chang黑hei色se灰hui狀zhuang小xiao點dian,即ji病bing菌jun的de分fen生sheng孢bao子zi梗geng和he分fen生sheng孢bao子zi。
3、斑點病:zaiyepianshangfabing,chuqichuxianchihesexiaodian,houzhujiankuodaxingchengzhongyanghuihuangse,waiyuanchihesedeyuanxingbingban,houqibingbanshangchangchuxiaoheidian,jifenshengbaoziqi,youshipailiechenglunzhizhuang,duoshuyuhechengbuguizexing。
以(yi)上(shang)三(san)種(zhong)葉(ye)部(bu)病(bing)害(hai)全(quan)年(nian)都(dou)有(you)發(fa)生(sheng)。病(bing)菌(jun)在(zai)被(bei)害(hai)葉(ye)片(pian)上(shang)越(yue)冬(dong),次(ci)年(nian)春(chun)季(ji)借(jie)風(feng)雨(yu)傳(chuan)播(bo)侵(qin)染(ran)。角(jiao)斑(ban)病(bing)和(he)灰(hui)斑(ban)病(bing)在(zai)幹(gan)旱(han)條(tiao)件(jian)下(xia)發(fa)病(bing)嚴(yan)重(zhong),斑(ban)點(dian)病(bing)在(zai)多(duo)雨(yu)季(ji)節(jie)發(fa)病(bing)流(liu)行(xing)。開(kai)溝(gou)排(pai)水(shui),夏(xia)季(ji)抗(kang)旱(han)等(deng)栽(zai)培(pei)管(guan)理(li)工(gong)作(zuo),在(zai)發(fa)病(bing)初(chu)期(qi)噴(pen)灑(sa)1∶1∶200倍波爾多液或60%代森鋅可濕性粉劑600倍液,或70%甲基托布津可濕性粉劑600—800倍液,或50%多菌靈可濕性粉劑800—1000倍液,每隔10—15天,連續噴藥2—3次。
手機版




