稻(dao)(dao)瘟病是水稻(dao)(dao)生(sheng)(sheng)產上常發(fa)病害，在(zai)整個生(sheng)(sheng)育期(qi)(qi)內均(jun)會發(fa)生(sheng)(sheng)，其中(zhong)以葉(xie)瘟和穗(sui)頸(jing)瘟危害較重，尤(you)其是穗(sui)頸(jing)瘟，會造成水稻(dao)(dao)白穗(sui)甚(shen)至絕收(shou)。據(ju)統計，截止(zhi)7月21日，全市稻(dao)(dao)瘟病發(fa)生(sheng)(sheng)面積47.2萬(wan)畝，較上年同期(qi)(qi)增6.35個百(bai)分點，平均(jun)病葉(xie)率(lv)5.95%，較上年同期(qi)(qi)高(gao)0.4個百(bai)分點，合川(chuan)(chuan)局部(bu)田(tian)塊(kuai)最(zui)(zui)高(gao)病葉(xie)率(lv)100%；永川(chuan)(chuan)、合川(chuan)(chuan)、銅梁、潼(tong)南等地局部(bu)出(chu)現白穗(sui)，平均(jun)白穗(sui)率(lv)0.35%，較上年同期(qi)(qi)減0.35個百(bai)分點，涪陵局部(bu)田(tian)塊(kuai)最(zui)(zui)高(gao)白穗(sui)率(lv)3.5%。
當前，我(wo)(wo)(wo)市中低山(shan)平(ping)(ping)壩地(di)(di)(di)(di)區(qu)水稻(dao)(dao)處(chu)(chu)于(yu)抽(chou)穗(sui)-灌漿期(qi)，高山(shan)水稻(dao)(dao)處(chu)(chu)于(yu)拔節-抽(chou)穗(sui)期(qi)。據(ju)市氣(qi)象預(yu)(yu)報，我(wo)(wo)(wo)市夏季氣(qi)溫偏(pian)(pian)高，主(zhu)城、西部(bu)(bu)、西南部(bu)(bu)和(he)(he)東南部(bu)(bu)降水偏(pian)(pian)多(duo)(duo)(duo)，中部(bu)(bu)和(he)(he)東北部(bu)(bu)偏(pian)(pian)少。各(ge)(ge)地(di)(di)(di)(di)平(ping)(ping)均(jun)氣(qi)溫為24-29℃，海拔較(jiao)高地(di)(di)(di)(di)區(qu)為24-26℃，其余地(di)(di)(di)(di)區(qu)為26.1-29℃，與常(chang)年(nian)同(tong)期(qi)相比，大(da)部(bu)(bu)地(di)(di)(di)(di)區(qu)偏(pian)(pian)高0.4-1.5℃，其中東北部(bu)(bu)的(de)(de)(de)(de)(de)中部(bu)(bu)地(di)(di)(di)(di)區(qu)偏(pian)(pian)高1-1.5℃；大(da)部(bu)(bu)地(di)(di)(di)(di)區(qu)較(jiao)上年(nian)同(tong)期(qi)偏(pian)(pian)高0.5-1℃。各(ge)(ge)地(di)(di)(di)(di)降水量(liang)在(zai)(zai)360-680毫米之間，與常(chang)年(nian)同(tong)期(qi)相比，主(zhu)城、西部(bu)(bu)、西南部(bu)(bu)和(he)(he)東南部(bu)(bu)偏(pian)(pian)多(duo)(duo)(duo)1-3成(cheng)(cheng)，中部(bu)(bu)和(he)(he)東北部(bu)(bu)偏(pian)(pian)少1-2成(cheng)(cheng)；與上年(nian)同(tong)期(qi)相比，西部(bu)(bu)、主(zhu)城偏(pian)(pian)多(duo)(duo)(duo)1-2成(cheng)(cheng)，中部(bu)(bu)偏(pian)(pian)少2-3成(cheng)(cheng)，其余大(da)部(bu)(bu)地(di)(di)(di)(di)區(qu)持平(ping)(ping)。氣(qi)候總體(ti)條件對(dui)(dui)稻(dao)(dao)瘟(wen)(wen)(wen)病(bing)(bing)(bing)(bing)的(de)(de)(de)(de)(de)發生流行較(jiao)為有(you)利(li)。雖然我(wo)(wo)(wo)市水稻(dao)(dao)品種(zhong)(zhong)(zhong)抗病(bing)(bing)(bing)(bing)性(xing)近年(nian)來有(you)所提(ti)升(sheng)，但部(bu)(bu)分品種(zhong)(zhong)(zhong)仍存較(jiao)大(da)流行風險，稻(dao)(dao)瘟(wen)(wen)(wen)病(bing)(bing)(bing)(bing)病(bing)(bing)(bing)(bing)菌(jun)優勢種(zhong)(zhong)(zhong)群分布(bu)更加(jia)集中，優勢小種(zhong)(zhong)(zhong)更加(jia)突出、致病(bing)(bing)(bing)(bing)譜廣(guang)、致病(bing)(bing)(bing)(bing)性(xing)強。因此，各(ge)(ge)地(di)(di)(di)(di)要(yao)(yao)(yao)高度(du)重視，積(ji)極開(kai)展(zhan)稻(dao)(dao)瘟(wen)(wen)(wen)病(bing)(bing)(bing)(bing)的(de)(de)(de)(de)(de)系(xi)統調查和(he)(he)大(da)田普查，及時發布(bu)稻(dao)(dao)瘟(wen)(wen)(wen)病(bing)(bing)(bing)(bing)發生防(fang)治(zhi)(zhi)信(xin)息，要(yao)(yao)(yao)抓住(zhu)關(guan)鍵(jian)時期(qi)，組織對(dui)(dui)路藥劑(ji)，積(ji)極動員廣(guang)大(da)群眾開(kai)展(zhan)稻(dao)(dao)瘟(wen)(wen)(wen)病(bing)(bing)(bing)(bing)的(de)(de)(de)(de)(de)防(fang)治(zhi)(zhi)工作，最大(da)限(xian)度(du)地(di)(di)(di)(di)減少稻(dao)(dao)瘟(wen)(wen)(wen)病(bing)(bing)(bing)(bing)造成(cheng)(cheng)的(de)(de)(de)(de)(de)損失。防(fang)治(zhi)(zhi)關(guan)鍵(jian)時間：7-8月重點預(yu)(yu)防(fang)穗(sui)頸瘟(wen)(wen)(wen)，感病(bing)(bing)(bing)(bing)品種(zhong)(zhong)(zhong)、常(chang)發地(di)(di)(di)(di)區(qu)及發生過葉瘟(wen)(wen)(wen)的(de)(de)(de)(de)(de)地(di)(di)(di)(di)塊，要(yao)(yao)(yao)在(zai)(zai)破口(kou)初(chu)期(qi)用(yong)藥預(yu)(yu)防(fang)，若抽(chou)穗(sui)揚花期(qi)遇雨(yu)，須在(zai)(zai)破口(kou)期(qi)和(he)(he)齊穗(sui)期(qi)各(ge)(ge)噴一次藥。抗稻(dao)(dao)瘟(wen)(wen)(wen)病(bing)(bing)(bing)(bing)品種(zhong)(zhong)(zhong)，視情況采取(qu)防(fang)治(zhi)(zhi)措施，破口(kou)抽(chou)穗(sui)期(qi)應(ying)預(yu)(yu)防(fang)穗(sui)頸瘟(wen)(wen)(wen)。防(fang)治(zhi)(zhi)藥劑(ji)推薦：枯草芽(ya)孢桿菌(jun)或春(chun)雷霉素或嘧菌(jun)酯或三環(huan)唑或咪鮮胺微乳劑(ji)等。
