根據近期各地田間蟲情調查，田間褐飛虱比例上升較快，一般為35%－55%，高的達到83%（椒江）。褐飛虱短翅型成蟲數量偏高，為2005年以來同期次高年，預計六（4）代褐飛虱呈中等發生態勢，七（5）代呈中等偏重發生態勢，如防控不到位，部分田塊仍有可能出現“毀稈倒伏”。稻縱卷葉螟田間蛾量偏高，且仍在上升，預計六（4）代稻縱卷葉螟為中等偏重發生，局部大發生，對遲熟單季稻和連作晚稻構成較大威脅。各地應對六（4）代褐飛虱和稻縱卷葉螟的發生動態，給予密切關注。
褐飛虱 ①8月下旬一些地方燈下出現不同程度的褐飛虱回遷峰。天臺縣8月21日燈下開始突增，高峰日8月23日燈下誘蟲3200頭，8月21－26日燈下累計誘褐飛虱8080只，占8月1-26日累計誘褐飛虱的88.48%。②褐飛虱及其短翅型成蟲種群比例偏高。據調查，當前田間褐飛虱蟲量為100－450頭/百叢，高的稻區超過800頭/百叢，短翅型成蟲比例為10%－46.6%。遂昌站8月20日調查，單季稻褐飛虱221.25頭/百叢，比2008年同期增47.5%。椒江站8月20日測區調查，單季晚稻平均褐飛虱446頭/百叢，其中短翅型成蟲60頭占13.45%，褐飛虱短翅型成蟲為2005年來同期最高；8月25日調查，平均稻飛虱百叢蟲量282頭，其中褐飛虱234頭占總稻飛虱的83%，并有未孵卵270.5萬粒（幅度167.5－460.8萬粒）。嘉興站8月25日調查，平均褐飛虱蟲量為13.33頭/百叢，其中短翅型成蟲1.5頭占11.25%，2008年同期褐飛虱為1.33頭/百叢；桐鄉站8月26日觀測圃調查，褐飛虱短翅型成蟲高達200頭/百叢；天臺站8月25日普查，全縣褐飛虱蟲量為535頭/百叢（幅度0－4100頭/百叢），其中短翅型成蟲70頭占13.65%（2008年同期調查為61頭，其中短翅型成蟲20頭；2007年155頭，其中短翅型成蟲15頭）。東陽站8月21日調查，單季稻褐飛虱短翅型成蟲110頭，占29.7%。桐廬8月20日調查，褐飛虱為263頭/百叢，其中短翅型成蟲占40.7 %。蕭山站大田普查，失治田塊褐飛虱達到315頭/百叢，短翅型成蟲占46%。松陽站8月25日調查，單季稻平均310頭/百叢（幅度35－530頭/百叢），短翅型成蟲占25.4%。縉云站8月24－26日普查30塊田，平均褐飛虱750頭/百叢，其中百叢蟲量在1000頭以上占10%，500－900頭占50%。
稻(dao)(dao)(dao)縱卷(juan)(juan)(juan)葉(xie)(xie)螟 ①五（3）代殘留(liu)(liu)蟲(chong)(chong)(chong)(chong)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)。五（3）代殘留(liu)(liu)蟲(chong)(chong)(chong)(chong)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)為(wei)(wei)1100－4500頭(tou)(tou)(tou)/畝(mu)(mu)(mu)(mu)，防治(zhi)差的(de)田(tian)塊為(wei)(wei)9000－12000頭(tou)(tou)(tou)/畝(mu)(mu)(mu)(mu)。如(ru)桐廬8月(yue)(yue)(yue)(yue)(yue)20日(ri)(ri)(ri)(ri)(ri)(ri)(ri)調(diao)(diao)查，殘留(liu)(liu)蟲(chong)(chong)(chong)(chong)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)平(ping)(ping)均(jun)為(wei)(wei)1290頭(tou)(tou)(tou)/畝(mu)(mu)(mu)(mu)，低(di)于去年1350頭(tou)(tou)(tou)/畝(mu)(mu)(mu)(mu)、前(qian)年1500頭(tou)(tou)(tou)/畝(mu)(mu)(mu)(mu)，防治(zhi)差的(de)田(tian)塊殘留(liu)(liu)蟲(chong)(chong)(chong)(chong)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)高(gao)(gao)(gao)(gao)達7500頭(tou)(tou)(tou)/畝(mu)(mu)(mu)(mu)，未防治(zhi)田(tian)塊殘留(liu)(liu)蟲(chong)(chong)(chong)(chong)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)高(gao)(gao)(gao)(gao)達9萬(wan)(wan)(wan)(wan)(wan)頭(tou)(tou)(tou)/畝(mu)(mu)(mu)(mu)；溫(wen)嶺(ling)(ling)站(zhan)(zhan)8月(yue)(yue)(yue)(yue)(yue)19日(ri)(ri)(ri)(ri)(ri)(ri)(ri)觀察圃調(diao)(diao)查，單(dan)季(ji)稻(dao)(dao)(dao)防治(zhi)區卷(juan)(juan)(juan)葉(xie)(xie)率(lv)2.6%，畝(mu)(mu)(mu)(mu)殘留(liu)(liu)蟲(chong)(chong)(chong)(chong)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)4400頭(tou)(tou)(tou)，不防治(zhi)區卷(juan)(juan)(juan)葉(xie)(xie)率(lv)7.68%，畝(mu)(mu)(mu)(mu)殘留(liu)(liu)蟲(chong)(chong)(chong)(chong)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)21750頭(tou)(tou)(tou)。江(jiang)(jiang)山站(zhan)(zhan)8月(yue)(yue)(yue)(yue)(yue)20日(ri)(ri)(ri)(ri)(ri)(ri)(ri)調(diao)(diao)查，加(jia)權平(ping)(ping)均(jun)卷(juan)(juan)(juan)葉(xie)(xie)率(lv)3.4%，畝(mu)(mu)(mu)(mu)均(jun)殘留(liu)(liu)蟲(chong)(chong)(chong)(chong)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)1002條(tiao)。②田(tian)間(jian)蛾(e)(e)(e)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)。8月(yue)(yue)(yue)(yue)(yue)20－23日(ri)(ri)(ri)(ri)(ri)(ri)(ri)全省大(da)部分(fen)地區出(chu)現六（4）代第一(yi)個蛾(e)(e)(e)峰突(tu)增(zeng)，一(yi)般田(tian)蛾(e)(e)(e)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)在(zai)(zai)(zai)800－1100頭(tou)(tou)(tou)/畝(mu)(mu)(mu)(mu)，最高(gao)(gao)(gao)(gao)達到3500頭(tou)(tou)(tou)/畝(mu)(mu)(mu)(mu)，目(mu)前(qian)部分(fen)稻(dao)(dao)(dao)區田(tian)間(jian)蛾(e)(e)(e)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)仍在(zai)(zai)(zai)持(chi)續(xu)上升。蒼南站(zhan)(zhan)8月(yue)(yue)(yue)(yue)(yue)20-21日(ri)(ri)(ri)(ri)(ri)(ri)(ri)調(diao)(diao)查，單(dan)季(ji)稻(dao)(dao)(dao)平(ping)(ping)均(jun)畝(mu)(mu)(mu)(mu)蛾(e)(e)(e)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)1033頭(tou)(tou)(tou)，連(lian)作晚(wan)稻(dao)(dao)(dao)早插田(tian)1025頭(tou)(tou)(tou)、遲(chi)插田(tian)267頭(tou)(tou)(tou)；瑞(rui)安站(zhan)(zhan)調(diao)(diao)查，8月(yue)(yue)(yue)(yue)(yue)21日(ri)(ri)(ri)(ri)(ri)(ri)(ri)開始突(tu)增(zeng)，8月(yue)(yue)(yue)(yue)(yue)24日(ri)(ri)(ri)(ri)(ri)(ri)(ri)畝(mu)(mu)(mu)(mu)蛾(e)(e)(e)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)高(gao)(gao)(gao)(gao)達1460頭(tou)(tou)(tou)；椒江(jiang)(jiang)站(zhan)(zhan)8月(yue)(yue)(yue)(yue)(yue)21日(ri)(ri)(ri)(ri)(ri)(ri)(ri)畝(mu)(mu)(mu)(mu)蛾(e)(e)(e)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)1916頭(tou)(tou)(tou)；溫(wen)嶺(ling)(ling)站(zhan)(zhan)單(dan)季(ji)稻(dao)(dao)(dao)畝(mu)(mu)(mu)(mu)蛾(e)(e)(e)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)1185.5頭(tou)(tou)(tou)（幅度528—1976頭(tou)(tou)(tou))；臨(lin)海站(zhan)(zhan)8月(yue)(yue)(yue)(yue)(yue)24日(ri)(ri)(ri)(ri)(ri)(ri)(ri)蛾(e)(e)(e)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)724頭(tou)(tou)(tou)/畝(mu)(mu)(mu)(mu)(幅度312－1270頭(tou)(tou)(tou)/畝(mu)(mu)(mu)(mu))；永康站(zhan)(zhan)8月(yue)(yue)(yue)(yue)(yue)20－24日(ri)(ri)(ri)(ri)(ri)(ri)(ri)每(mei)天蛾(e)(e)(e)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)維持(chi)在(zai)(zai)(zai)700－900頭(tou)(tou)(tou)/畝(mu)(mu)(mu)(mu)；海鹽站(zhan)(zhan)8月(yue)(yue)(yue)(yue)(yue)23日(ri)(ri)(ri)(ri)(ri)(ri)(ri)蛾(e)(e)(e)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)825頭(tou)(tou)(tou)/畝(mu)(mu)(mu)(mu)；平(ping)(ping)湖站(zhan)(zhan)8月(yue)(yue)(yue)(yue)(yue)23日(ri)(ri)(ri)(ri)(ri)(ri)(ri)蛾(e)(e)(e)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)876頭(tou)(tou)(tou)/畝(mu)(mu)(mu)(mu)，沿(yan)海鄉鎮1500頭(tou)(tou)(tou)/畝(mu)(mu)(mu)(mu)以上；蕭山站(zhan)(zhan)8月(yue)(yue)(yue)(yue)(yue)21日(ri)(ri)(ri)(ri)(ri)(ri)(ri)蛾(e)(e)(e)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)為(wei)(wei)3030頭(tou)(tou)(tou)/畝(mu)(mu)(mu)(mu)；椒江(jiang)(jiang)站(zhan)(zhan)8月(yue)(yue)(yue)(yue)(yue)26日(ri)(ri)(ri)(ri)(ri)(ri)(ri)蛾(e)(e)(e)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)1840頭(tou)(tou)(tou)/畝(mu)(mu)(mu)(mu)；德清(qing)站(zhan)(zhan)8月(yue)(yue)(yue)(yue)(yue)20日(ri)(ri)(ri)(ri)(ri)(ri)(ri)蛾(e)(e)(e)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)1450頭(tou)(tou)(tou)/畝(mu)(mu)(mu)(mu)。③當(dang)前(qian)田(tian)間(jian)蟲(chong)(chong)(chong)(chong)、卵(luan)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)。一(yi)般為(wei)(wei)1－4萬(wan)(wan)(wan)(wan)(wan)粒(li)/畝(mu)(mu)(mu)(mu)，局部高(gao)(gao)(gao)(gao)的(de)稻(dao)(dao)(dao)區為(wei)(wei)10萬(wan)(wan)(wan)(wan)(wan)粒(li)/畝(mu)(mu)(mu)(mu)以上；蟲(chong)(chong)(chong)(chong)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)為(wei)(wei)10－20頭(tou)(tou)(tou)/百叢(cong)，高(gao)(gao)(gao)(gao)的(de)稻(dao)(dao)(dao)區為(wei)(wei)250頭(tou)(tou)(tou)/百叢(cong)以上。海鹽站(zhan)(zhan)8月(yue)(yue)(yue)(yue)(yue)24日(ri)(ri)(ri)(ri)(ri)(ri)(ri)普查，有未孵卵(luan)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)平(ping)(ping)均(jun)為(wei)(wei)3.68萬(wan)(wan)(wan)(wan)(wan)粒(li)/畝(mu)(mu)(mu)(mu)（幅度0-12.83萬(wan)(wan)(wan)(wan)(wan)粒(li)/畝(mu)(mu)(mu)(mu)）；長興站(zhan)(zhan)8月(yue)(yue)(yue)(yue)(yue)20日(ri)(ri)(ri)(ri)(ri)(ri)(ri)調(diao)(diao)查，平(ping)(ping)均(jun)卵(luan)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)為(wei)(wei)2.33萬(wan)(wan)(wan)(wan)(wan)粒(li)/畝(mu)(mu)(mu)(mu)；德清(qing)站(zhan)(zhan)8月(yue)(yue)(yue)(yue)(yue)20日(ri)(ri)(ri)(ri)(ri)(ri)(ri)調(diao)(diao)查，卵(luan)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)為(wei)(wei)8.3萬(wan)(wan)(wan)(wan)(wan)粒(li)/畝(mu)(mu)(mu)(mu)；瑞(rui)安站(zhan)(zhan)8月(yue)(yue)(yue)(yue)(yue)24日(ri)(ri)(ri)(ri)(ri)(ri)(ri)調(diao)(diao)查，幼(you)蟲(chong)(chong)(chong)(chong)257.5頭(tou)(tou)(tou)/百叢(cong)(幅度160-340頭(tou)(tou)(tou)/百叢(cong))，以2-3齡為(wei)(wei)主，卵(luan)粒(li)2.3萬(wan)(wan)(wan)(wan)(wan)粒(li)/畝(mu)(mu)(mu)(mu)。當(dang)前(qian)各(ge)地蛾(e)(e)(e)、卵(luan)量(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)還在(zai)(zai)(zai)繼續(xu)增(zeng)加(jia)。
氣候條件 據省氣候中心8月下旬－9月中旬天
氣(qi)趨勢(shi)預測：平(ping)均氣(qi)溫(wen)(wen)(wen)浙(zhe)(zhe)(zhe)南地(di)(di)區(qu)(qu)(qu)(qu)接(jie)近(jin)常年(nian)(nian)(nian)(nian)，全(quan)省(sheng)其他(ta)大(da)部分(fen)地(di)(di)區(qu)(qu)(qu)(qu)接(jie)近(jin)常年(nian)(nian)(nian)(nian)略(lve)(lve)(lve)偏(pian)高，除(chu)沿海(hai)島嶼外全(quan)省(sheng)大(da)部分(fen)地(di)(di)區(qu)(qu)(qu)(qu)還有(you)35℃以上(shang)的高溫(wen)(wen)(wen)天(tian)氣(qi)出(chu)現(xian)(xian)；東(dong)南沿海(hai)地(di)(di)區(qu)(qu)(qu)(qu)和麗(li)水地(di)(di)區(qu)(qu)(qu)(qu)東(dong)部降水量接(jie)近(jin)常年(nian)(nian)(nian)(nian)或(huo)偏(pian)多，全(quan)省(sheng)其他(ta)地(di)(di)區(qu)(qu)(qu)(qu)接(jie)近(jin)常年(nian)(nian)(nian)(nian)略(lve)(lve)(lve)偏(pian)少。2009年(nian)(nian)(nian)(nian)日(ri)(ri)平(ping)均氣(qi)溫(wen)(wen)(wen)≤20℃的初(chu)日(ri)(ri)，浙(zhe)(zhe)(zhe)北(bei)大(da)部分(fen)地(di)(di)區(qu)(qu)(qu)(qu)出(chu)現(xian)(xian)在(zai)10月(yue)(yue)(yue)(yue)(yue)(yue)上(shang)旬中(zhong)期（常年(nian)(nian)(nian)(nian)9月(yue)(yue)(yue)(yue)(yue)(yue)28日(ri)(ri)），比(bi)常年(nian)(nian)(nian)(nian)略(lve)(lve)(lve)偏(pian)遲(chi)；浙(zhe)(zhe)(zhe)中(zhong)、浙(zhe)(zhe)(zhe)南兩地(di)(di)區(qu)(qu)(qu)(qu)出(chu)現(xian)(xian)在(zai)10月(yue)(yue)(yue)(yue)(yue)(yue)中(zhong)旬（常年(nian)(nian)(nian)(nian)10月(yue)(yue)(yue)(yue)(yue)(yue)13日(ri)(ri)），接(jie)近(jin)常年(nian)(nian)(nian)(nian)或(huo)略(lve)(lve)(lve)遲(chi)。日(ri)(ri)平(ping)均氣(qi)溫(wen)(wen)(wen)≤23℃的初(chu)日(ri)(ri)，浙(zhe)(zhe)(zhe)中(zhong)西(xi)部和浙(zhe)(zhe)(zhe)北(bei)地(di)(di)區(qu)(qu)(qu)(qu)出(chu)現(xian)(xian)在(zai)9月(yue)(yue)(yue)(yue)(yue)(yue)中(zhong)旬中(zhong)期（常年(nian)(nian)(nian)(nian)9月(yue)(yue)(yue)(yue)(yue)(yue)15日(ri)(ri)），接(jie)近(jin)常年(nian)(nian)(nian)(nian)；全(quan)省(sheng)其他(ta)地(di)(di)區(qu)(qu)(qu)(qu)出(chu)現(xian)(xian)在(zai)9月(yue)(yue)(yue)(yue)(yue)(yue)下旬后期（常年(nian)(nian)(nian)(nian)9月(yue)(yue)(yue)(yue)(yue)(yue)21日(ri)(ri)），比(bi)常年(nian)(nian)(nian)(nian)略(lve)(lve)(lve)偏(pian)遲(chi)。預計9月(yue)(yue)(yue)(yue)(yue)(yue)上(shang)中(zhong)旬有(you)二個冷空氣(qi)影響(xiang)我省(sheng)，分(fen)別出(chu)現(xian)(xian)在(zai)9月(yue)(yue)(yue)(yue)(yue)(yue)2－5日(ri)(ri)（較強）和9月(yue)(yue)(yue)(yue)(yue)(yue)11－13日(ri)(ri)（中(zhong)等）。8月(yue)(yue)(yue)(yue)(yue)(yue)下旬至9月(yue)(yue)(yue)(yue)(yue)(yue)中(zhong)旬的氣(qi)候(hou)條件對褐飛虱和稻(dao)縱卷葉(xie)螟(ming)的發生較為有(you)利。
由于(yu)受前(qian)期(qi)褐飛(fei)(fei)(fei)(fei)虱(shi)(shi)(shi)遷(qian)入基數偏(pian)低，以(yi)及防(fang)(fang)(fang)治(zhi)(zhi)(zhi)的影響，全(quan)省大部(bu)分稻(dao)(dao)田(tian)(tian)蟲量不高，但仍有一些(xie)田(tian)(tian)塊(kuai)褐飛(fei)(fei)(fei)(fei)虱(shi)(shi)(shi)比(bi)例(li)和(he)(he)(he)蟲量偏(pian)高，特(te)別是當前(qian)短(duan)翅型(xing)成蟲數量和(he)(he)(he)比(bi)例(li)偏(pian)高。由于(yu)今(jin)年(nian)的氣(qi)候條件對(dui)褐飛(fei)(fei)(fei)(fei)虱(shi)(shi)(shi)的發生十分有利，褐飛(fei)(fei)(fei)(fei)虱(shi)(shi)(shi)具(ju)有極強的繁殖能力(li)和(he)(he)(he)致害性，一些(xie)田(tian)(tian)塊(kuai)如果失(shi)治(zhi)(zhi)(zhi)，仍有可(ke)能出現毀稈倒伏，各(ge)地應密切關注(zhu)田(tian)(tian)間(jian)褐飛(fei)(fei)(fei)(fei)虱(shi)(shi)(shi)種群消(xiao)長動態，克(ke)服(fu)麻痹思想，加強蟲情系統監測和(he)(he)(he)大田(tian)(tian)普查，分類指導防(fang)(fang)(fang)治(zhi)(zhi)(zhi)，堅持“治(zhi)(zhi)(zhi)前(qian)控后(hou)”策略，將褐飛(fei)(fei)(fei)(fei)虱(shi)(shi)(shi)種群基數控制在防(fang)(fang)(fang)治(zhi)(zhi)(zhi)指標以(yi)下，防(fang)(fang)(fang)患于(yu)未(wei)然(ran)。同時，鑒于(yu)今(jin)年(nian)一些(xie)稻(dao)(dao)區灰(hui)飛(fei)(fei)(fei)(fei)虱(shi)(shi)(shi)的種群數量偏(pian)高，建議粳稻(dao)(dao)區和(he)(he)(he)水(shui)稻(dao)(dao)病毒病重發區在防(fang)(fang)(fang)治(zhi)(zhi)(zhi)褐飛(fei)(fei)(fei)(fei)虱(shi)(shi)(shi)時，使用吡蚜(ya)酮兼治(zhi)(zhi)(zhi)灰(hui)飛(fei)(fei)(fei)(fei)虱(shi)(shi)(shi)，減輕后(hou)期(qi)灰(hui)飛(fei)(fei)(fei)(fei)虱(shi)(shi)(shi)的防(fang)(fang)(fang)控壓力(li)；做(zuo)好稻(dao)(dao)縱卷葉螟的“達標”防(fang)(fang)(fang)治(zhi)(zhi)(zhi)。
來源：浙(zhe)江省農作物病蟲(chong)測報(bao)站
