二代粘(zhan)蟲(chong)(chong)是我省(sheng)玉米苗期(qi)的重要害(hai)蟲(chong)(chong)，具有暴食性(xing)、突(tu)發性(xing)和(he)遷飛性(xing)，往(wang)往(wang)在局部地(di)區突(tu)然(ran)暴發成(cheng)災，嚴(yan)重時(shi)將葉片(pian)吃(chi)光形成(cheng)光桿，造成(cheng)缺苗斷垅，甚至絕收。
今年我(wo)省多地(di)(di)測報(bao)燈下粘蟲(chong)(chong)蛾量(liang)(liang)(liang)較(jiao)高(gao)，近期(qi)天氣(qi)條件對粘蟲(chong)(chong)發生危(wei)害有(you)利，各地(di)(di)監測結(jie)果(guo)表明，目(mu)前已進入二代粘蟲(chong)(chong)幼蟲(chong)(chong)為害期(qi)，部分地(di)(di)區為害較(jiao)重(zhong)(zhong)，截止6月20日不(bu)完全統計，全省發生面積(ji)90.95萬畝，一(yi)般百(bai)(bai)株(zhu)蟲(chong)(chong)量(liang)(liang)(liang)5--10頭(tou)(tou)(tou)(tou)，以(yi)洛陽、南陽、周(zhou)口(kou)等地(di)(di)的(de)(de)部分地(di)(di)區田(tian)(tian)(tian)間蟲(chong)(chong)量(liang)(liang)(liang)較(jiao)高(gao).洛陽市(shi)的(de)(de)嵩(song)縣玉(yu)米田(tian)(tian)(tian)危(wei)害株(zhu)率平(ping)均(jun)(jun)15～20%，嚴(yan)重(zhong)(zhong)地(di)(di)塊(kuai)(kuai)達(da)(da)50%以(yi)上，平(ping)均(jun)(jun)百(bai)(bai)株(zhu)蟲(chong)(chong)量(liang)(liang)(liang)9頭(tou)(tou)(tou)(tou)，嚴(yan)重(zhong)(zhong)地(di)(di)塊(kuai)(kuai)達(da)(da)76頭(tou)(tou)(tou)(tou)，最(zui)高(gao)單(dan)株(zhu)有(you)蟲(chong)(chong)2～3頭(tou)(tou)(tou)(tou)。伊川縣白元鄉旱地(di)(di)玉(yu)米田(tian)(tian)(tian)一(yi)般百(bai)(bai)株(zhu)蟲(chong)(chong)量(liang)(liang)(liang)5～10頭(tou)(tou)(tou)(tou)，嚴(yan)重(zhong)(zhong)地(di)(di)塊(kuai)(kuai)達(da)(da)30～40頭(tou)(tou)(tou)(tou)，個別單(dan)株(zhu)有(you)蟲(chong)(chong)5頭(tou)(tou)(tou)(tou)。宜陽縣川區夏(xia)玉(yu)米田(tian)(tian)(tian)一(yi)般受害株(zhu)率15-20%，嚴(yan)重(zhong)(zhong)達(da)(da)50%，平(ping)均(jun)(jun)百(bai)(bai)株(zhu)蟲(chong)(chong)量(liang)(liang)(liang)8頭(tou)(tou)(tou)(tou)，最(zui)高(gao)達(da)(da)65頭(tou)(tou)(tou)(tou)。周(zhou)口(kou)市(shi)的(de)(de)淮陽縣部分早(zao)播玉(yu)米田(tian)(tian)(tian)塊(kuai)(kuai)百(bai)(bai)株(zhu)蟲(chong)(chong)量(liang)(liang)(liang)最(zui)高(gao)達(da)(da)15頭(tou)(tou)(tou)(tou)。南陽市(shi)的(de)(de)新野縣平(ping)均(jun)(jun)百(bai)(bai)株(zhu)蟲(chong)(chong)量(liang)(liang)(liang)12.5頭(tou)(tou)(tou)(tou)，重(zhong)(zhong)田(tian)(tian)(tian)塊(kuai)(kuai)百(bai)(bai)株(zhu)54頭(tou)(tou)(tou)(tou)；西(xi)峽縣平(ping)均(jun)(jun)百(bai)(bai)株(zhu)蟲(chong)(chong)量(liang)(liang)(liang)7頭(tou)(tou)(tou)(tou)，最(zui)高(gao)百(bai)(bai)株(zhu)42頭(tou)(tou)(tou)(tou)；唐河縣一(yi)般百(bai)(bai)株(zhu)蟲(chong)(chong)量(liang)(liang)(liang)10-50頭(tou)(tou)(tou)(tou)，嚴(yan)重(zhong)(zhong)的(de)(de)桐(tong)河鄉大楊莊(zhuang)村10畝夏(xia)玉(yu)米百(bai)(bai)株(zhu)蟲(chong)(chong)量(liang)(liang)(liang)高(gao)達(da)(da)500頭(tou)(tou)(tou)(tou)以(yi)上。
目前我省粘蟲尚處于低齡幼蟲為害期，部分地區蟲齡已達3齡盛期，少數進入3、4齡暴食期，正值防治的關鍵時期，各地植保部門必須高度警惕，對已發生地塊立即組織群眾開展應急防治，深入田間提供技術指導，減輕二代粘蟲為害；同時，要進一步加強蟲情監測，在近期內立即開展一次全面普查，全面摸清蟲害發生情況，主動向當地政府領導做好匯報，落實屬地管理責任，抓緊安排部署，及時組織群眾開展統防統治和群防群治，嚴防其危害成災。
