由于近(jin)期(qi)我(wo)省(sheng)南(nan)部頻繁降雨，對(dui)水(shui)稻(dao)兩遷害蟲(chong)遷入十(shi)(shi)分有(you)(you)利，目(mu)前(qian)信陽市田(tian)(tian)間稻(dao)縱卷葉(xie)(xie)螟(ming)畝(mu)(mu)(mu)蛾(e)(e)(e)量(liang)(liang)劇增，全市平(ping)(ping)均(jun)(jun)(jun)(jun)每(mei)(mei)畝(mu)(mu)(mu)蛾(e)(e)(e)量(liang)(liang)820頭(tou)(tou)(tou)，其中(zhong)：定點(dian)田(tian)(tian)蛾(e)(e)(e)量(liang)(liang)：潢川(chuan)縣(xian)(xian)7月(yue)(yue)16日(ri)(ri)，調(diao)查(cha)(cha)三(san)點(dian)計0.3畝(mu)(mu)(mu)，見(jian)蛾(e)(e)(e)6頭(tou)(tou)(tou)，7月(yue)(yue)20日(ri)(ri)蛾(e)(e)(e)量(liang)(liang)明顯(xian)上升(sheng)，三(san)點(dian)平(ping)(ping)均(jun)(jun)(jun)(jun)折(zhe)(zhe)畝(mu)(mu)(mu)蛾(e)(e)(e)量(liang)(liang)576頭(tou)(tou)(tou)，7月(yue)(yue)24日(ri)(ri)趕蛾(e)(e)(e)，三(san)點(dian)平(ping)(ping)均(jun)(jun)(jun)(jun)折(zhe)(zhe)畝(mu)(mu)(mu)蛾(e)(e)(e)量(liang)(liang)1230頭(tou)(tou)(tou)。大田(tian)(tian)普查(cha)(cha)： 7月(yue)(yue)24—25日(ri)(ri)趕蛾(e)(e)(e)，商城縣(xian)(xian)平(ping)(ping)均(jun)(jun)(jun)(jun)每(mei)(mei)畝(mu)(mu)(mu)蛾(e)(e)(e)量(liang)(liang)4000頭(tou)(tou)(tou)，最高(gao)達10000頭(tou)(tou)(tou)以上；羅山縣(xian)(xian)平(ping)(ping)均(jun)(jun)(jun)(jun)畝(mu)(mu)(mu)蛾(e)(e)(e)量(liang)(liang)1800-3500頭(tou)(tou)(tou)，最高(gao)蛾(e)(e)(e)量(liang)(liang)5500頭(tou)(tou)(tou)；光山縣(xian)(xian)每(mei)(mei)畝(mu)(mu)(mu)蛾(e)(e)(e)量(liang)(liang)2060頭(tou)(tou)(tou)，最高(gao)畝(mu)(mu)(mu)蛾(e)(e)(e)量(liang)(liang)2350頭(tou)(tou)(tou)；潢川(chuan)縣(xian)(xian)每(mei)(mei)畝(mu)(mu)(mu)有(you)(you)蛾(e)(e)(e)600-700頭(tou)(tou)(tou)，最多田(tian)(tian)塊(kuai)(kuai)(kuai)畝(mu)(mu)(mu)有(you)(you)蛾(e)(e)(e)達3200頭(tou)(tou)(tou)；固始平(ping)(ping)均(jun)(jun)(jun)(jun)畝(mu)(mu)(mu)蛾(e)(e)(e)量(liang)(liang)140頭(tou)(tou)(tou)，最高(gao)870頭(tou)(tou)(tou)。殘留基(ji)數：潢川(chuan)縣(xian)(xian)7月(yue)(yue)14—17日(ri)(ri)調(diao)查(cha)(cha)36塊(kuai)(kuai)(kuai)田(tian)(tian)82畝(mu)(mu)(mu)，抽查(cha)(cha)3600叢(cong)，見(jian)有(you)(you)效活(huo)蟲(chong)208頭(tou)(tou)(tou)，平(ping)(ping)均(jun)(jun)(jun)(jun)每(mei)(mei)百叢(cong)有(you)(you)蟲(chong)5.8頭(tou)(tou)(tou)，最多田(tian)(tian)塊(kuai)(kuai)(kuai)畝(mu)(mu)(mu)有(you)(you)蟲(chong)1034頭(tou)(tou)(tou)。目(mu)前(qian)我(wo)省(sheng)稻(dao)縱卷葉(xie)(xie)螟(ming)即將進(jin)入卵孵盛期(qi)，而近(jin)期(qi)低溫高(gao)濕的氣候(hou)條件(jian)十(shi)(shi)分適宜稻(dao)縱卷葉(xie)(xie)螟(ming)的孵化(hua)生(sheng)長，預計我(wo)省(sheng)三(san)代(dai)稻(dao)縱卷葉(xie)(xie)螟(ming)在豫南(nan)稻(dao)區將大發生(sheng)。
稻飛虱全省已發生97.3萬(wan)畝，在信陽(yang)稻區的(de)蟲(chong)田率為(wei)27%，平均百叢有蟲(chong)146頭(tou)，最(zui)高(gao)550頭(tou)；南陽(yang)的(de)蟲(chong)田率達68%，平均百叢蟲(chong)量117.3頭(tou)，最(zui)高(gao)達1160頭(tou)。據中央氣(qi)(qi)象(xiang)臺預報，今年第8號臺風“鳳凰”即將(jiang)在福建沿海登陸，超(chao)強對流天氣(qi)(qi)有可能將(jiang)南方大量的(de)稻飛虱帶入我省，造成(cheng)稻飛虱大爆發。
來源：河(he)南植保信息網
