稻飛(fei)(fei)虱(shi)：3月(yue)(yue)以來陸(lu)續遷入(ru)我省，粵(yue)北和粵(yue)西稻區多地監測(ce)到(dao)遷入(ru)峰，遷入(ru)蟲(chong)(chong)(chong)量(liang)(liang)略高(gao)(gao)(gao)于去年同期。田(tian)間發生(sheng)分(fen)布不平(ping)衡，大部分(fen)田(tian)塊(kuai)蟲(chong)(chong)(chong)口密(mi)度(du)不高(gao)(gao)(gao)，粵(yue)西稻區早插田(tian)塊(kuai)發生(sheng)較重，蟲(chong)(chong)(chong)卵(luan)(luan)量(liang)(liang)較高(gao)(gao)(gao)。燈下(xia)情況。白背飛(fei)(fei)虱(shi)3月(yue)(yue)9日(ri)(ri)燈下(xia)始見，比去年遲(chi)5天。陽山站(zhan)(zhan)(zhan)(zhan)(zhan)3月(yue)(yue)21日(ri)(ri)單(dan)燈誘蟲(chong)(chong)(chong)10頭，恩(en)平(ping)站(zhan)(zhan)(zhan)(zhan)(zhan)3月(yue)(yue)25日(ri)(ri)單(dan)燈誘蟲(chong)(chong)(chong)99頭；4月(yue)(yue)21-25日(ri)(ri)，雷州(zhou)(zhou)站(zhan)(zhan)(zhan)(zhan)(zhan)、恩(en)平(ping)站(zhan)(zhan)(zhan)(zhan)(zhan)、南雄站(zhan)(zhan)(zhan)(zhan)(zhan)、曲江站(zhan)(zhan)(zhan)(zhan)(zhan)、陽山站(zhan)(zhan)(zhan)(zhan)(zhan)、大埔站(zhan)(zhan)(zhan)(zhan)(zhan)等監測(ce)站(zhan)(zhan)(zhan)(zhan)(zhan)監測(ce)到(dao)遷入(ru)峰，單(dan)燈單(dan)日(ri)(ri)誘蟲(chong)(chong)(chong)一(yi)般(ban)46-147頭，高(gao)(gao)(gao)的(de)266-346頭。田(tian)間情況。當(dang)前，全省百(bai)叢(cong)(cong)蟲(chong)(chong)(chong)量(liang)(liang)一(yi)般(ban)在50-150頭，粵(yue)西稻區早插田(tian)塊(kuai)百(bai)叢(cong)(cong)蟲(chong)(chong)(chong)量(liang)(liang)一(yi)般(ban)100-500頭，高(gao)(gao)(gao)的(de)1200-5000頭。據各地調(diao)查，茂名(ming)站(zhan)(zhan)(zhan)(zhan)(zhan)4月(yue)(yue)26日(ri)(ri)調(diao)查，百(bai)叢(cong)(cong)卵(luan)(luan)量(liang)(liang)一(yi)般(ban)1100粒，高(gao)(gao)(gao)的(de)3300粒；陽春站(zhan)(zhan)(zhan)(zhan)(zhan)4月(yue)(yue)28日(ri)(ri)調(diao)查，田(tian)間以白背飛(fei)(fei)虱(shi)低齡(ling)若蟲(chong)(chong)(chong)為主，百(bai)叢(cong)(cong)蟲(chong)(chong)(chong)量(liang)(liang)一(yi)般(ban)1200-3600頭，高(gao)(gao)(gao)的(de)4920頭，田(tian)間仍有大量(liang)(liang)未孵卵(luan)(luan)粒；雷州(zhou)(zhou)站(zhan)(zhan)(zhan)(zhan)(zhan)4月(yue)(yue)28-30日(ri)(ri)調(diao)查，百(bai)叢(cong)(cong)蟲(chong)(chong)(chong)量(liang)(liang)一(yi)般(ban)250-500頭，高(gao)(gao)(gao)的(de)2000-4000頭，以3-4齡(ling)白背飛(fei)(fei)虱(shi)為主。
稻(dao)(dao)縱卷(juan)(juan)葉(xie)螟：4月(yue)以來陸(lu)續遷入(ru)我省，粵西部(bu)(bu)分(fen)稻(dao)(dao)區監測(ce)到較明顯遷入(ru)峰。田(tian)(tian)間(jian)發生(sheng)為害早(zao)，大部(bu)(bu)分(fen)田(tian)(tian)塊蟲口密度不高(gao)(gao)，粵西早(zao)插和(he)濃(nong)綠田(tian)(tian)塊發生(sheng)較重。趕蛾(e)情況。雷(lei)州站(zhan)4月(yue)4-11日(ri)調(diao)查(cha)(cha)(cha)，畝(mu)(mu)(mu)(mu)(mu)蛾(e)量(liang)(liang)一(yi)般(ban)(ban)(ban)(ban)150-500頭(tou)(tou)(tou)(tou)，高(gao)(gao)的1800-3000頭(tou)(tou)(tou)(tou)；高(gao)(gao)州站(zhan)4月(yue)12-16日(ri)調(diao)查(cha)(cha)(cha)，畝(mu)(mu)(mu)(mu)(mu)蛾(e)量(liang)(liang)一(yi)般(ban)(ban)(ban)(ban)150-520頭(tou)(tou)(tou)(tou)，高(gao)(gao)的800-1100頭(tou)(tou)(tou)(tou)；臺(tai)山站(zhan)4月(yue)20-24日(ri)調(diao)查(cha)(cha)(cha)，畝(mu)(mu)(mu)(mu)(mu)蛾(e)量(liang)(liang)一(yi)般(ban)(ban)(ban)(ban)150-280頭(tou)(tou)(tou)(tou)，高(gao)(gao)的300-450頭(tou)(tou)(tou)(tou)。田(tian)(tian)間(jian)情況。當前主要在粵西稻(dao)(dao)區發生(sheng)，畝(mu)(mu)(mu)(mu)(mu)幼(you)(you)蟲量(liang)(liang)一(yi)般(ban)(ban)(ban)(ban)100-650頭(tou)(tou)(tou)(tou)，高(gao)(gao)的1000-3700頭(tou)(tou)(tou)(tou)，卷(juan)(juan)葉(xie)率0.01%-0.05%，其余稻(dao)(dao)區零(ling)星發生(sheng)。陽春站(zhan)4月(yue)28日(ri)調(diao)查(cha)(cha)(cha)，濃(nong)綠田(tian)(tian)塊畝(mu)(mu)(mu)(mu)(mu)幼(you)(you)蟲量(liang)(liang)一(yi)般(ban)(ban)(ban)(ban)1.8萬-2.8萬頭(tou)(tou)(tou)(tou)，高(gao)(gao)的5.2萬頭(tou)(tou)(tou)(tou)，以低齡為主；茂名站(zhan)4月(yue)26日(ri)調(diao)查(cha)(cha)(cha)，畝(mu)(mu)(mu)(mu)(mu)幼(you)(you)蟲量(liang)(liang)一(yi)般(ban)(ban)(ban)(ban)1350頭(tou)(tou)(tou)(tou)，高(gao)(gao)的3700頭(tou)(tou)(tou)(tou)，畝(mu)(mu)(mu)(mu)(mu)卵(luan)量(liang)(liang)一(yi)般(ban)(ban)(ban)(ban)3500粒(li)，高(gao)(gao)的6000粒(li)，卷(juan)(juan)葉(xie)率一(yi)般(ban)(ban)(ban)(ban)0.1%，高(gao)(gao)的0.8%；湛江站(zhan)4月(yue)26日(ri)調(diao)查(cha)(cha)(cha)，畝(mu)(mu)(mu)(mu)(mu)幼(you)(you)蟲量(liang)(liang)一(yi)般(ban)(ban)(ban)(ban)180頭(tou)(tou)(tou)(tou)，高(gao)(gao)的1655頭(tou)(tou)(tou)(tou)，畝(mu)(mu)(mu)(mu)(mu)卵(luan)量(liang)(liang)一(yi)般(ban)(ban)(ban)(ban)1860粒(li)，高(gao)(gao)的8100粒(li)，卷(juan)(juan)葉(xie)率一(yi)般(ban)(ban)(ban)(ban)0.4%，高(gao)(gao)的1.3%。
據省氣(qi)候中(zhong)(zhong)心預計，5月氣(qi)溫(wen)偏高，降水(shui)大(da)部分地(di)區偏多1-2成，有5次主(zhu)要降水(shui)過程，利(li)(li)于水(shui)稻(dao)遷(qian)飛性害(hai)蟲(chong)持(chi)續遷(qian)入和集中(zhong)(zhong)降落；早稻(dao)陸續進入分蘗盛期(qi)，郁(yu)閉度(du)增大(da)，營養條件豐富，利(li)(li)于水(shui)稻(dao)遷(qian)飛性害(hai)蟲(chong)滋生(sheng)繁殖。
各(ge)地要密切監測水稻遷飛性害蟲發生動態(tai)，及(ji)時(shi)發布預報預警(jing)，因地制宜地科(ke)學指導農戶做好防(fang)治工(gong)作。
