止于7月29日，全區一代(dai)成蟲(chong)發生(sheng)面積841.69萬(wan)(wan)(wan)畝(mu)(mu)(mu)(mu)(mu)，其中(zhong)：呼(hu)(hu)倫貝爾(er)盟10萬(wan)(wan)(wan)畝(mu)(mu)(mu)(mu)(mu)，興安盟200萬(wan)(wan)(wan)畝(mu)(mu)(mu)(mu)(mu),通遼市(shi)(shi)112萬(wan)(wan)(wan)畝(mu)(mu)(mu)(mu)(mu)，赤峰市(shi)(shi)120萬(wan)(wan)(wan)畝(mu)(mu)(mu)(mu)(mu)，錫林郭(guo)勒盟50萬(wan)(wan)(wan)畝(mu)(mu)(mu)(mu)(mu)，烏蘭察(cha)布市(shi)(shi)60萬(wan)(wan)(wan)畝(mu)(mu)(mu)(mu)(mu)，呼(hu)(hu)和浩特(te)市(shi)(shi)178萬(wan)(wan)(wan)畝(mu)(mu)(mu)(mu)(mu),鄂(e)爾(er)多斯市(shi)(shi)48萬(wan)(wan)(wan)畝(mu)(mu)(mu)(mu)(mu)，包頭市(shi)(shi)35萬(wan)(wan)(wan)畝(mu)(mu)(mu)(mu)(mu)，巴(ba)彥淖(nao)爾(er)市(shi)(shi)16.49萬(wan)(wan)(wan)畝(mu)(mu)(mu)(mu)(mu)，烏海市(shi)(shi)2.2萬(wan)(wan)(wan)畝(mu)(mu)(mu)(mu)(mu)，阿拉善盟10萬(wan)(wan)(wan)畝(mu)(mu)(mu)(mu)(mu)。二代(dai)幼蟲(chong)在西部(bu)地區發生(sheng)25.78萬(wan)(wan)(wan)畝(mu)(mu)(mu)(mu)(mu),部(bu)分地區蟲(chong)口密度較(jiao)高。其中(zhong), 烏蘭察(cha)布市(shi)(shi)2萬(wan)(wan)(wan)畝(mu)(mu)(mu)(mu)(mu),呼(hu)(hu)和浩特(te)市(shi)(shi)0.2萬(wan)(wan)(wan)畝(mu)(mu)(mu)(mu)(mu),鄂(e)爾(er)多斯市(shi)(shi)9.3萬(wan)(wan)(wan)畝(mu)(mu)(mu)(mu)(mu)，巴(ba)彥淖(nao)爾(er)市(shi)(shi)4.18萬(wan)(wan)(wan)畝(mu)(mu)(mu)(mu)(mu),阿拉善盟10.1萬(wan)(wan)(wan)畝(mu)(mu)(mu)(mu)(mu)。具(ju)體情況(kuang)如下:
成(cheng)蟲(chong)(chong)情況：7月25-28日(ri),草地(di)(di)螟一代成(cheng)蟲(chong)(chong)在(zai)(zai)興(xing)安(an)盟、呼倫(lun)貝(bei)(bei)爾(er)始盛(sheng)，興(xing)安(an)盟各(ge)旗(qi)縣(xian)區(qu)百(bai)步(bu)驚蛾(e)(e)400-500頭(tou)(tou)(tou)(tou)，烏蘭(lan)浩(hao)特市7月28日(ri)，百(bai)步(bu)驚蛾(e)(e)500頭(tou)(tou)(tou)(tou)，單燈誘(you)蛾(e)(e)20頭(tou)(tou)(tou)(tou)，抱卵級(ji)別2-3級(ji)，以(yi)林(lin)地(di)(di)和草灘為(wei)主。科右前(qian)旗(qi)單燈誘(you)蛾(e)(e)10頭(tou)(tou)(tou)(tou)左右。目前(qian)，呼倫(lun)貝(bei)(bei)爾(er)市嶺東地(di)(di)區(qu)百(bai)步(bu)驚蛾(e)(e)100-200頭(tou)(tou)(tou)(tou)。呼和浩(hao)特各(ge)旗(qi)縣(xian)區(qu)百(bai)步(bu)驚蛾(e)(e)量為(wei)20-40頭(tou)(tou)(tou)(tou)，局(ju)部(bu)達200-300頭(tou)(tou)(tou)(tou)。其它地(di)(di)區(qu)蛾(e)(e)量在(zai)(zai)30頭(tou)(tou)(tou)(tou)以(yi)下(xia)。
二代幼蟲(chong)(chong)(chong)發生(sheng)(sheng)情況:止于(yu)7月28日(ri)，二代幼蟲(chong)(chong)(chong)在西(xi)部(bu)5盟(meng)市(shi)(shi)發生(sheng)(sheng)，但目(mu)前發生(sheng)(sheng)面積不大。鄂爾多(duo)斯市(shi)(shi)7月24日(ri)調(diao)查(cha)，達拉(la)特旗(qi)(qi)侯家營子人(ren)工(gong)苜蓿(xu)地(di)幼蟲(chong)(chong)(chong)量平(ping)(ping)均(jun)60～80頭(tou)(tou)/m2 ，最(zui)高(gao)300頭(tou)(tou)左(zuo)右(you)，蟲(chong)(chong)(chong)齡(ling)(ling)(ling)均(jun)為(wei)(wei)(wei)(wei)1～2齡(ling)(ling)(ling)，以(yi)2齡(ling)(ling)(ling)居多(duo)。鄂托克旗(qi)(qi)賽烏素草籽場(chang)、三(san)北羊(yang)場(chang)的油葵地(di)、苜蓿(xu)地(di)幼蟲(chong)(chong)(chong)平(ping)(ping)均(jun)密(mi)度60～80頭(tou)(tou)/m2，最(zui)高(gao)120頭(tou)(tou)/m2，蟲(chong)(chong)(chong)齡(ling)(ling)(ling)均(jun)為(wei)(wei)(wei)(wei)1～2齡(ling)(ling)(ling)，以(yi)1齡(ling)(ling)(ling)居多(duo)；7月25日(ri)烏審旗(qi)(qi)蘇力(li)德蘇木沙爾利(li)格嘎查(cha)農田(tian)(tian)周邊草場(chang)（以(yi)黃蒿為(wei)(wei)(wei)(wei)主(zhu)）幼蟲(chong)(chong)(chong)平(ping)(ping)均(jun)密(mi)度60頭(tou)(tou)/m2，最(zui)高(gao)170頭(tou)(tou)/m2，蟲(chong)(chong)(chong)齡(ling)(ling)(ling)為(wei)(wei)(wei)(wei)1～3齡(ling)(ling)(ling)。阿(a)(a)拉(la)善(shan)盟(meng)阿(a)(a)左(zuo)旗(qi)(qi)7月26日(ri)調(diao)查(cha)，巴音木仁蘇木4.5萬畝(mu)向日(ri)葵，5.5萬畝(mu)的農田(tian)(tian)周邊河灘草場(chang)發生(sheng)(sheng)二代幼蟲(chong)(chong)(chong)，其中重(zhong)發生(sheng)(sheng)4萬畝(mu)，向日(ri)葵田(tian)(tian)蟲(chong)(chong)(chong)口密(mi)度一般500-600頭(tou)(tou)/m2，發生(sheng)(sheng)嚴重(zhong)的地(di)塊2000-3000頭(tou)(tou)/m2。呼和(he)浩特市(shi)(shi)托克托縣7月28日(ri)調(diao)查(cha)，五申鎮金河農業(ye)園區苜蓿(xu)田(tian)(tian)幼蟲(chong)(chong)(chong)密(mi)度平(ping)(ping)均(jun)為(wei)(wei)(wei)(wei)52頭(tou)(tou)/m2，蟲(chong)(chong)(chong)齡(ling)(ling)(ling)為(wei)(wei)(wei)(wei) 3齡(ling)(ling)(ling)。
來源：內(nei)蒙(meng)古自治區植保植檢站
