7月(yue)21日，我(wo)局在(zai)海鹽召開(kai)了單(dan)(dan)季晚(wan)(wan)稻(dao)(dao)中后(hou)期(qi)病(bing)(bing)蟲發(fa)(fa)(fa)生(sheng)(sheng)(sheng)趨(qu)(qu)勢(shi)會商會。與會代表(biao)認(ren)為，今年(nian)我(wo)省單(dan)(dan)季晚(wan)(wan)稻(dao)(dao)中后(hou)期(qi)病(bing)(bing)蟲發(fa)(fa)(fa)生(sheng)(sheng)(sheng)地區間差異大(da)(da)，病(bing)(bing)蟲情復雜(za)。根(gen)據(ju)當(dang)前單(dan)(dan)季晚(wan)(wan)稻(dao)(dao)病(bing)(bing)蟲發(fa)(fa)(fa)生(sheng)(sheng)(sheng)基(ji)數、耕作(zuo)制度(du)、稻(dao)(dao)株和(he)品種的抗病(bing)(bing)蟲性(xing)及未來氣候趨(qu)(qu)勢(shi)綜合分析，預計今年(nian)單(dan)(dan)季晚(wan)(wan)稻(dao)(dao)中后(hou)期(qi)病(bing)(bing)蟲偏(pian)重(zhong)發(fa)(fa)(fa)生(sheng)(sheng)(sheng)，發(fa)(fa)(fa)生(sheng)(sheng)(sheng)程(cheng)度(du)輕(qing)于去年(nian)。其中稻(dao)(dao)縱(zong)卷葉(xie)螟大(da)(da)發(fa)(fa)(fa)生(sheng)(sheng)(sheng)；褐飛虱在(zai)浙(zhe)江中部、南部和(he)西北(bei)部大(da)(da)發(fa)(fa)(fa)生(sheng)(sheng)(sheng)，浙(zhe)江北(bei)部偏(pian)重(zhong)發(fa)(fa)(fa)生(sheng)(sheng)(sheng)；雜(za)交秈稻(dao)(dao)區白背飛虱偏(pian)重(zhong)發(fa)(fa)(fa)生(sheng)(sheng)(sheng)；二化螟在(zai)浙(zhe)中、浙(zhe)南偏(pian)重(zhong)發(fa)(fa)(fa)生(sheng)(sheng)(sheng)，浙(zhe)北(bei)偏(pian)輕(qing)發(fa)(fa)(fa)生(sheng)(sheng)(sheng)；紋枯(ku)病(bing)(bing)偏(pian)重(zhong)發(fa)(fa)(fa)生(sheng)(sheng)(sheng)；稻(dao)(dao)曲病(bing)(bing)接近(jin)常年(nian)；細菌性(xing)病(bing)(bing)害在(zai)浙(zhe)南沿海部分稻(dao)(dao)區有流行趨(qu)(qu)勢(shi)；稻(dao)(dao)瘟病(bing)(bing)總體為輕(qing)發(fa)(fa)(fa)生(sheng)(sheng)(sheng)，但浙(zhe)西和(he)浙(zhe)南已發(fa)(fa)(fa)生(sheng)(sheng)(sheng)葉(xie)瘟的感病(bing)(bing)品種為偏(pian)重(zhong)發(fa)(fa)(fa)生(sheng)(sheng)(sheng)。
一、主要病蟲害發生趨勢(shi)
1．稻縱卷(juan)葉螟：稻縱卷(juan)葉螟大發(fa)生(sheng)(sheng)，發(fa)生(sheng)(sheng)面積約2850萬畝次。
2．稻飛虱(shi)(shi)：白(bai)背(bei)飛虱(shi)(shi)在單季雜(za)交秈稻上偏(pian)重(zhong)發(fa)生(sheng)(sheng)，部(bu)(bu)(bu)分大發(fa)生(sheng)(sheng)；褐飛虱(shi)(shi)在浙(zhe)江中部(bu)(bu)(bu)、南部(bu)(bu)(bu)和西(xi)北部(bu)(bu)(bu)大發(fa)生(sheng)(sheng)，浙(zhe)江北部(bu)(bu)(bu)偏(pian)重(zhong)發(fa)生(sheng)(sheng)。稻飛虱(shi)(shi)發(fa)生(sheng)(sheng)面積約3400萬畝次(ci)。
3．螟蟲：以(yi)二化螟為主，地區(qu)間差異(yi)較大，呈明顯斑(ban)塊現(xian)象，在浙(zhe)中部(bu)和南(nan)部(bu)單雙季稻混栽區(qu)偏重發(fa)(fa)生，部(bu)分(fen)稻區(qu)穗期重發(fa)(fa)，浙(zhe)江北部(bu)和其他(ta)純(chun)單季稻區(qu)偏輕發(fa)(fa)生。大螟明顯回升，部(bu)分(fen)稻田穗期受(shou)害較重。螟蟲發(fa)(fa)生面積(ji)約1200萬畝(mu)次。
4．紋枯病：偏重(zhong)發(fa)生，發(fa)生面積約1080萬畝。
5．細菌(jun)性病(bing)(bing)害：細菌(jun)性條斑病(bing)(bing)在浙南沿海(hai)稻區(qu)有流行可能。白葉枯病(bing)(bing)輕發(fa)生。發(fa)生面積(ji)約50萬畝。
6．稻曲(qu)病：稻曲(qu)病接近(jin)常(chang)年，如在感病生育期遇(yu)多雨(yu)天氣有局部流(liu)行可能，發生面積約250萬畝。
7．稻瘟(wen)病：總體為(wei)輕發生(sheng)(sheng)，但(dan)在浙(zhe)(zhe)西和浙(zhe)(zhe)南(nan)部(bu)分山區(qu)半山區(qu)的(de)感病品種上有偏重流(liu)行的(de)可能，其發生(sheng)(sheng)程(cheng)度為(wei)近幾年來(lai)較重的(de)一年，預計發生(sheng)(sheng)面積為(wei)90萬畝次。
8.灰飛(fei)虱：穗(sui)期灰飛(fei)虱繼續呈逐年(nian)加(jia)重趨勢，在浙北和浙中(zhong)的粳稻穗(sui)期為偏重發生，發生面(mian)積約550萬畝次。
二、主要預測依據
1.蟲害(hai)基數偏(pian)高，特別是稻(dao)縱卷(juan)葉(xie)螟蛾峰(feng)多，盛發期長，世(shi)代重疊、蟲量偏(pian)高；褐飛虱基數偏(pian)高。
稻(dao)(dao)縱卷葉螟 四(2)代稻(dao)(dao)縱卷葉螟蛾(e)峰多，盛發期長(chang)，田(tian)(tian)(tian)間(jian)蛾(e)量(liang)(liang)(liang)(liang)偏高(gao)(gao)，發生(sheng)程度(du)雖輕于(yu)去(qu)年同期，但全(quan)省大(da)(da)部稻(dao)(dao)區仍達到大(da)(da)發生(sheng)。經防治后殘蟲(chong)(chong)量(liang)(liang)(liang)(liang)偏高(gao)(gao)，一(yi)般畝(mu)(mu)(mu)殘留量(liang)(liang)(liang)(liang)在(zai)1500條(tiao)(tiao)左(zuo)右。自7月(yue)(yue)(yue)17日(ri)起，各地(di)田(tian)(tian)(tian)間(jian)蛾(e)量(liang)(liang)(liang)(liang)開始(shi)突增，一(yi)般畝(mu)(mu)(mu)蛾(e)量(liang)(liang)(liang)(liang)為(wei)(wei)(wei)(wei)700－2000頭(tou)(tou)，高(gao)(gao)的(de)(de)超過3500頭(tou)(tou)，大(da)(da)部分稻(dao)(dao)區高(gao)(gao)蛾(e)量(liang)(liang)(liang)(liang)日(ri)持續3－6天。淳安站(zhan)(zhan)7月(yue)(yue)(yue)18日(ri)為(wei)(wei)(wei)(wei)1649頭(tou)(tou)/畝(mu)(mu)(mu)，7月(yue)(yue)(yue)22日(ri)為(wei)(wei)(wei)(wei)1707頭(tou)(tou)/畝(mu)(mu)(mu)；南潯站(zhan)(zhan)7月(yue)(yue)(yue)18日(ri)移栽田(tian)(tian)(tian)為(wei)(wei)(wei)(wei)917頭(tou)(tou)/畝(mu)(mu)(mu)，直播田(tian)(tian)(tian)為(wei)(wei)(wei)(wei)2203頭(tou)(tou)/畝(mu)(mu)(mu)；海(hai)鹽站(zhan)(zhan)7月(yue)(yue)(yue)16日(ri)為(wei)(wei)(wei)(wei)1283頭(tou)(tou)/畝(mu)(mu)(mu)、7月(yue)(yue)(yue)18日(ri)為(wei)(wei)(wei)(wei)1120頭(tou)(tou)/畝(mu)(mu)(mu)、7月(yue)(yue)(yue)20日(ri)為(wei)(wei)(wei)(wei)2125頭(tou)(tou)/畝(mu)(mu)(mu)；海(hai)寧站(zhan)(zhan)7月(yue)(yue)(yue)17日(ri)－21日(ri)田(tian)(tian)(tian)間(jian)畝(mu)(mu)(mu)蛾(e)量(liang)(liang)(liang)(liang)均在(zai)2200頭(tou)(tou)以上，高(gao)(gao)的(de)(de)達到4090頭(tou)(tou)。據7月(yue)(yue)(yue)15－22日(ri)23個(ge)測(ce)報站(zhan)(zhan)田(tian)(tian)(tian)間(jian)蟲(chong)(chong)卵量(liang)(liang)(liang)(liang)調(diao)(diao)查，平(ping)均幼蟲(chong)(chong)115條(tiao)(tiao)/百(bai)(bai)(bai)叢(cong)(cong)(cong)，卵量(liang)(liang)(liang)(liang)為(wei)(wei)(wei)(wei)380粒(li)(li)(li)/百(bai)(bai)(bai)叢(cong)(cong)(cong)；如湖州站(zhan)(zhan)7月(yue)(yue)(yue)18日(ri)調(diao)(diao)查，幼蟲(chong)(chong)90條(tiao)(tiao)/百(bai)(bai)(bai)叢(cong)(cong)(cong)，卵量(liang)(liang)(liang)(liang)215粒(li)(li)(li)/百(bai)(bai)(bai)叢(cong)(cong)(cong)；嘉興站(zhan)(zhan)調(diao)(diao)查，7月(yue)(yue)(yue)21日(ri)蟲(chong)(chong)量(liang)(liang)(liang)(liang)為(wei)(wei)(wei)(wei)131條(tiao)(tiao)/百(bai)(bai)(bai)叢(cong)(cong)(cong)，7月(yue)(yue)(yue)22日(ri)卵量(liang)(liang)(liang)(liang)為(wei)(wei)(wei)(wei)49.2粒(li)(li)(li)/百(bai)(bai)(bai)叢(cong)(cong)(cong)；紹(shao)興站(zhan)(zhan)7月(yue)(yue)(yue)20日(ri)調(diao)(diao)查，卵量(liang)(liang)(liang)(liang)666粒(li)(li)(li)/百(bai)(bai)(bai)叢(cong)(cong)(cong)；上虞站(zhan)(zhan)7月(yue)(yue)(yue)19日(ri)調(diao)(diao)查，平(ping)均卵量(liang)(liang)(liang)(liang)540粒(li)(li)(li)/百(bai)(bai)(bai)叢(cong)(cong)(cong)，高(gao)(gao)的(de)(de)達900粒(li)(li)(li)/百(bai)(bai)(bai)叢(cong)(cong)(cong)； 松陽站(zhan)(zhan) 7月(yue)(yue)(yue)18日(ri)調(diao)(diao)查，蟲(chong)(chong)量(liang)(liang)(liang)(liang)194條(tiao)(tiao)/百(bai)(bai)(bai)叢(cong)(cong)(cong)（幅度(du)10－310條(tiao)(tiao)/百(bai)(bai)(bai)叢(cong)(cong)(cong)）；建德站(zhan)(zhan)7月(yue)(yue)(yue)21日(ri)調(diao)(diao)查，蟲(chong)(chong)量(liang)(liang)(liang)(liang)553條(tiao)(tiao)/百(bai)(bai)(bai)叢(cong)(cong)(cong)；江山(shan)站(zhan)(zhan)7月(yue)(yue)(yue)21日(ri)調(diao)(diao)查，蟲(chong)(chong)量(liang)(liang)(liang)(liang)為(wei)(wei)(wei)(wei)233條(tiao)(tiao)/百(bai)(bai)(bai)叢(cong)(cong)(cong)。目前(qian)各地(di)田(tian)(tian)(tian)間(jian)蟲(chong)(chong)、卵量(liang)(liang)(liang)(liang)還在(zai)繼續上升，但地(di)區間(jian)、田(tian)(tian)(tian)塊間(jian)差異較大(da)(da)。
白(bai)背(bei)飛虱 到(dao)目(mu)前為(wei)(wei)(wei)(wei)止大部分稻區燈下累計(ji)誘蟲量(liang)比去(qu)年(nian)(nian)(nian)低，接近常年(nian)(nian)(nian)略偏少(shao)。7月15－22日田間(jian)蟲量(liang)調(diao)查，大多數(shu)地區田間(jian)蟲量(liang)低于去(qu)年(nian)(nian)(nian)同(tong)期(qi)，浙江中部一(yi)(yi)般(ban)為(wei)(wei)(wei)(wei)50－200頭(tou)/百(bai)叢(cong)(cong)，高的(de)超過2000頭(tou)/百(bai)叢(cong)(cong)，卵量(liang)為(wei)(wei)(wei)(wei)200－1000粒/百(bai)叢(cong)(cong)；浙江西部蟲量(liang)一(yi)(yi)般(ban)為(wei)(wei)(wei)(wei)500－2000頭(tou)/百(bai)叢(cong)(cong)，卵量(liang)為(wei)(wei)(wei)(wei)1000－2000粒/百(bai)叢(cong)(cong)；浙北（湖州、嘉興(xing)）蟲量(liang)一(yi)(yi)般(ban)為(wei)(wei)(wei)(wei)20－100頭(tou)/百(bai)叢(cong)(cong)，卵量(liang)為(wei)(wei)(wei)(wei)500－4000粒/百(bai)叢(cong)(cong)。
褐(he)(he)(he)飛(fei)虱(shi) 今年(nian)(nian)(nian)(nian)(nian)(nian)褐(he)(he)(he)飛(fei)虱(shi)燈(deng)下初見(jian)期(qi)為(wei)5月(yue)(yue)下旬至6月(yue)(yue)初，比(bi)(bi)去(qu)(qu)(qu)年(nian)(nian)(nian)(nian)(nian)(nian)偏遲(chi)，比(bi)(bi)常年(nian)(nian)(nian)(nian)(nian)(nian)早4－10天，屬歷(li)史早發(fa)年(nian)(nian)(nian)(nian)(nian)(nian)。到目前為(wei)止(zhi)，燈(deng)下累計誘(you)蟲(chong)量(liang)和(he)田(tian)間(jian)蟲(chong)量(liang)，除浙江北(bei)部和(he)東部稻區(qu)明顯低于去(qu)(qu)(qu)年(nian)(nian)(nian)(nian)(nian)(nian)外，其他稻區(qu)較去(qu)(qu)(qu)年(nian)(nian)(nian)(nian)(nian)(nian)同(tong)期(qi)略低和(he)相近。如(ru)建(jian)德站(zhan)到7月(yue)(yue)18日(ri)止(zhi)，燈(deng)下共(gong)誘(you)褐(he)(he)(he)飛(fei)虱(shi)512頭(tou)(tou)(tou)，比(bi)(bi)2007年(nian)(nian)(nian)(nian)(nian)(nian)同(tong)期(qi)335頭(tou)(tou)(tou)增(zeng)52.8%，7月(yue)(yue)19日(ri)調(diao)(diao)查，田(tian)間(jian)褐(he)(he)(he)飛(fei)虱(shi)為(wei)72頭(tou)(tou)(tou)/百(bai)叢(cong)，比(bi)(bi)去(qu)(qu)(qu)年(nian)(nian)(nian)(nian)(nian)(nian)增(zeng)3.8倍；遂昌(chang)站(zhan)7月(yue)(yue)15日(ri)調(diao)(diao)查，防治(zhi)區(qu)26.7頭(tou)(tou)(tou)/百(bai)叢(cong)，未防治(zhi)觀(guan)測區(qu)1915頭(tou)(tou)(tou)/百(bai)叢(cong)，高于去(qu)(qu)(qu)年(nian)(nian)(nian)(nian)(nian)(nian)同(tong)期(qi)1450頭(tou)(tou)(tou)/百(bai)叢(cong)；湖州站(zhan)到7月(yue)(yue)17日(ri)止(zhi)，燈(deng)下共(gong)誘(you)褐(he)(he)(he)飛(fei)虱(shi)50頭(tou)(tou)(tou)，比(bi)(bi)去(qu)(qu)(qu)年(nian)(nian)(nian)(nian)(nian)(nian)同(tong)期(qi)減(jian)(jian)(jian)77.9%，7月(yue)(yue)19日(ri)調(diao)(diao)查，褐(he)(he)(he)飛(fei)虱(shi)24頭(tou)(tou)(tou)/百(bai)叢(cong)，比(bi)(bi)去(qu)(qu)(qu)年(nian)(nian)(nian)(nian)(nian)(nian)減(jian)(jian)(jian)75%；嘉興站(zhan)到7月(yue)(yue)20日(ri)止(zhi)，燈(deng)下共(gong)誘(you)褐(he)(he)(he)飛(fei)虱(shi)58頭(tou)(tou)(tou)，比(bi)(bi)去(qu)(qu)(qu)年(nian)(nian)(nian)(nian)(nian)(nian)同(tong)期(qi)減(jian)(jian)(jian)40%，7月(yue)(yue)8日(ri)調(diao)(diao)查，田(tian)間(jian)褐(he)(he)(he)飛(fei)虱(shi)成蟲(chong)0.14頭(tou)(tou)(tou)/百(bai)叢(cong)，比(bi)(bi)去(qu)(qu)(qu)年(nian)(nian)(nian)(nian)(nian)(nian)同(tong)期(qi)4.7頭(tou)(tou)(tou)/百(bai)叢(cong)減(jian)(jian)(jian)少97%。目前浙江中部和(he)南部田(tian)間(jian)褐(he)(he)(he)飛(fei)虱(shi)蟲(chong)量(liang)已具備主害代大發(fa)生(sheng)的蟲(chong)源基數。
二(er)化螟(ming) 由于(yu)(yu)今(jin)年(nian)(nian)一代(dai)二(er)化螟(ming)發生和防治工作的(de)不(bu)平(ping)衡(heng)，各(ge)地一代(dai)殘(can)留蟲(chong)量(liang)(liang)差異(yi)較大，地區(qu)間(jian)極不(bu)平(ping)衡(heng)，有近半(ban)數以(yi)上的(de)稻區(qu)高(gao)(gao)于(yu)(yu)去年(nian)(nian)，其(qi)中以(yi)浙江(jiang)(jiang)中南稻區(qu)較為突(tu)出(chu)。在浙江(jiang)(jiang)中南部的(de)一些稻區(qu)二(er)代(dai)二(er)化螟(ming)燈下誘蛾(e)較高(gao)(gao)，溫(wen)州(zhou)站7月1－15日共誘蛾(e)599頭(tou)(tou)，為歷年(nian)(nian)少見；溫(wen)嶺站累計誘蛾(e)109頭(tou)(tou)，高(gao)(gao)于(yu)(yu)去年(nian)(nian)4頭(tou)(tou)和前年(nian)(nian)25頭(tou)(tou)，低于(yu)(yu)常年(nian)(nian)181頭(tou)(tou)；天(tian)臺站累計誘蛾(e)57頭(tou)(tou)，高(gao)(gao)于(yu)(yu)去年(nian)(nian)和前年(nian)(nian)。經防治后，這些地區(qu)二(er)代(dai)殘(can)留蟲(chong)量(liang)(liang)仍然偏(pian)高(gao)(gao)，7月16日前后調查，溫(wen)州(zhou)畝(mu)殘(can)蟲(chong)量(liang)(liang)3498頭(tou)(tou)；瑞安(an)畝(mu)殘(can)蟲(chong)量(liang)(liang)10827頭(tou)(tou)（1984－24866頭(tou)(tou)）；龍(long)游畝(mu)殘(can)蟲(chong)量(liang)(liang)7800頭(tou)(tou)；江(jiang)(jiang)山畝(mu)殘(can)蟲(chong)量(liang)(liang)500頭(tou)(tou)。
稻瘟病(bing)(bing) 葉(xie)瘟在浙中和浙南的(de)山區(qu)(qu)部分地區(qu)(qu)發生(sheng)較重(zhong)，據(ju)不完全(quan)統計，全(quan)省已發生(sheng)葉(xie)瘟2萬畝，為近年來較重(zhong)的(de)一年。如黃巖山區(qu)(qu)常規稻上發生(sheng)葉(xie)瘟5000余(yu)畝，重(zhong)病(bing)(bing)田叢病(bing)(bing)率100%、株病(bing)(bing)率33.9%；江山發生(sheng)葉(xie)瘟2000余(yu)畝，發病(bing)(bing)中心株病(bing)(bing)率32.1%、葉(xie)病(bing)(bing)率18.5%。
2．氣象條件(jian)對(dui)病蟲發生(sheng)有利(li)
根據省氣(qi)(qi)候(hou)中心(xin)預(yu)報，7－8 月(yue)我(wo)省將(jiang)有(you)階段性的高溫(wen)(wen)、少(shao)雨天(tian)氣(qi)(qi)，高溫(wen)(wen)干旱(han)程度總體接近常(chang)年(nian)(nian)(nian)。預(yu)計日最高氣(qi)(qi)溫(wen)(wen)≥35℃的高溫(wen)(wen)天(tian)數，全省大部地(di)(di)區比(bi)常(chang)年(nian)(nian)(nian)略偏多，比(bi)去年(nian)(nian)(nian)明顯偏少(shao)。7－9月(yue)總降水量沿海和浙(zhe)南地(di)(di)區比(bi)常(chang)年(nian)(nian)(nian)略偏多，其他(ta)地(di)(di)區比(bi)常(chang)年(nian)(nian)(nian)略偏少(shao)。7－9 月(yue)可能有(you)3 個熱帶氣(qi)(qi)旋影(ying)響我(wo)省，其中1 個熱帶氣(qi)(qi)旋可能嚴重影(ying)響或登陸我(wo)省。根據上述氣(qi)(qi)候(hou)趨勢(shi)預(yu)報分析，今年(nian)(nian)(nian)夏季(ji)(ji)和秋季(ji)(ji)的氣(qi)(qi)候(hou)條件有(you)利于單季(ji)(ji)稻(dao)病蟲發生。
3．稻田生態環境對害蟲控制能(neng)力弱
由于單(dan)季(ji)稻(dao)(dao)生(sheng)(sheng)(sheng)育(yu)期長，長勢旺，田間適溫(wen)高濕時(shi)間長，十分(fen)有(you)利(li)于水稻(dao)(dao)病(bing)蟲(chong)(chong)的(de)發(fa)生(sheng)(sheng)(sheng)和繁衍(yan)，特別是超級稻(dao)(dao)面積擴大(da)對病(bing)蟲(chong)(chong)發(fa)生(sheng)(sheng)(sheng)更為有(you)利(li)。我省(sheng)大(da)多水稻(dao)(dao)品(pin)種(zhong)對褐(he)飛虱等(deng)病(bing)蟲(chong)(chong)抗(kang)性差(cha)，以及因鉀肥價格(ge)上(shang)漲，稻(dao)(dao)田鉀肥施用量(liang)減少，導致(zhi)稻(dao)(dao)株抗(kang)病(bing)蟲(chong)(chong)能力(li)下降。此外，單(dan)季(ji)稻(dao)(dao)生(sheng)(sheng)(sheng)長前期，因大(da)量(liang)使用化學農藥防(fang)治稻(dao)(dao)縱卷葉螟等(deng)害蟲(chong)(chong)，殺(sha)傷稻(dao)(dao)田天(tian)(tian)敵，自然天(tian)(tian)敵對害蟲(chong)(chong)控制能力(li)下降。因此，目(mu)前單(dan)季(ji)稻(dao)(dao)田生(sheng)(sheng)(sheng)態環境對水稻(dao)(dao)病(bing)蟲(chong)(chong)的(de)自然控制很(hen)弱。
鑒于今年我省單季晚(wan)稻(dao)(dao)中(zhong)后期重(zhong)(zhong)大(da)(da)病(bing)(bing)蟲(chong)(chong)發(fa)(fa)生仍然(ran)較重(zhong)(zhong)，稻(dao)(dao)縱卷葉(xie)螟蛾(e)峰多、蛾(e)量大(da)(da)、發(fa)(fa)生重(zhong)(zhong)、世(shi)代重(zhong)(zhong)疊；褐飛虱蟲(chong)(chong)源遷入尚(shang)未定局(ju)，浙江北部(bu)褐飛虱發(fa)(fa)生態勢仍不十分明朗；穗頸瘟在(zai)山區(qu)半山區(qu)的感(gan)病(bing)(bing)品種上有局(ju)部(bu)流行可能；地區(qu)間、田(tian)塊(kuai)間病(bing)(bing)蟲(chong)(chong)情(qing)(qing)差異較大(da)(da)等(deng)情(qing)(qing)況，各地要(yao)(yao)切實加強病(bing)(bing)蟲(chong)(chong)情(qing)(qing)監(jian)測和面上普查，特別(bie)要(yao)(yao)加強對水(shui)(shui)稻(dao)(dao)“兩(liang)遷”害蟲(chong)(chong)和稻(dao)(dao)瘟病(bing)(bing)的監(jian)測工作(zuo)，及時發(fa)(fa)布短(duan)中(zhong)期預報和警報，根據《2008年浙江省水(shui)(shui)稻(dao)(dao)重(zhong)(zhong)大(da)(da)病(bing)(bing)蟲(chong)(chong)防(fang)控方案(an)》的總體要(yao)(yao)求(qiu)，因地制宜提出科學防(fang)控策略和技術措施，并(bing)通過電視等(deng)媒體迅速(su)將防(fang)治(zhi)關鍵技術傳(chuan)送給廣大(da)(da)糧農，有效控制水(shui)(shui)稻(dao)(dao)病(bing)(bing)蟲(chong)(chong)害發(fa)(fa)生。
來源：浙江省植物保護檢疫局
