水(shui)稻(dao)(dao)(dao)病(bing)蟲害發(fa)(fa)生(sheng)(sheng)(sheng)基(ji)數(shu)高(gao)，后(hou)期(qi)重(zhong)(zhong)(zhong)發(fa)(fa)態勢(shi)明顯。截至目前(qian)，水(shui)稻(dao)(dao)(dao)重(zhong)(zhong)(zhong)大病(bing)蟲累(lei)計發(fa)(fa)生(sheng)(sheng)(sheng)5.75億畝(mu)次，比7月初增加(jia)86%。其(qi)中(zhong)，稻(dao)(dao)(dao)飛虱發(fa)(fa)生(sheng)(sheng)(sheng)1.63億畝(mu)次，程度明顯重(zhong)(zhong)(zhong)于(yu)上年。稻(dao)(dao)(dao)縱卷葉螟(ming)發(fa)(fa)生(sheng)(sheng)(sheng)1.18億畝(mu)，程度與上年同期(qi)相當。稻(dao)(dao)(dao)瘟(wen)病(bing)發(fa)(fa)生(sheng)(sheng)(sheng)2400萬畝(mu)次，南方稻(dao)(dao)(dao)區(qu)病(bing)葉率(lv)一般(ban)2%~5%，但點片重(zhong)(zhong)(zhong)發(fa)(fa)現象突(tu)出。東(dong)北(bei)稻(dao)(dao)(dao)區(qu)當前(qian)病(bing)葉率(lv)較低，一般(ban)在2%以(yi)下(xia)，但近期(qi)病(bing)點增加(jia)較快。預計下(xia)階段江南和長江中(zhong)下(xia)游(you)水(shui)稻(dao)(dao)(dao)“兩遷”害蟲，以(yi)及西(xi)南東(dong)部(bu)、長江中(zhong)下(xia)游(you)和東(dong)北(bei)稻(dao)(dao)(dao)區(qu)稻(dao)(dao)(dao)瘟(wen)病(bing)重(zhong)(zhong)(zhong)發(fa)(fa)態勢(shi)明顯。
玉(yu)(yu)米病蟲(chong)(chong)(chong)害發(fa)(fa)(fa)生(sheng)(sheng)范圍廣，局部呈加重危害態勢。截至目前，玉(yu)(yu)米重大(da)病蟲(chong)(chong)(chong)累計發(fa)(fa)(fa)生(sheng)(sheng)4.5億(yi)畝(mu)次，同比增(zeng)加6%，比7月(yue)(yue)初增(zeng)加73.1%。其(qi)中(zhong)，玉(yu)(yu)米螟發(fa)(fa)(fa)生(sheng)(sheng)1.1億(yi)畝(mu)次，東北(bei)(bei)春玉(yu)(yu)米區總體(ti)中(zhong)等(deng)至偏(pian)重發(fa)(fa)(fa)生(sheng)(sheng)，程度(du)(du)與上(shang)年相當。西北(bei)(bei)春玉(yu)(yu)米區上(shang)升危害態勢明顯(xian)。黃淮海夏玉(yu)(yu)米區總體(ti)中(zhong)等(deng)發(fa)(fa)(fa)生(sheng)(sheng)，但局部程度(du)(du)較重。玉(yu)(yu)米大(da)斑病發(fa)(fa)(fa)生(sheng)(sheng)0.65億(yi)畝(mu)次。玉(yu)(yu)米粘蟲(chong)(chong)(chong)7月(yue)(yue)下旬東北(bei)(bei)、華北(bei)(bei)、黃淮地區相繼出現成蟲(chong)(chong)(chong)峰，尤其(qi)東北(bei)(bei)地區蛾(e)量顯(xian)著高于上(shang)年同期，8月(yue)(yue)上(shang)中(zhong)旬將進入幼蟲(chong)(chong)(chong)危害盛期。預計下階段(duan)玉(yu)(yu)米螟東北(bei)(bei)南部、華北(bei)(bei)和(he)黃淮局部以(yi)及新疆等(deng)地偏(pian)重發(fa)(fa)(fa)生(sheng)(sheng)，玉(yu)(yu)米大(da)斑病在(zai)(zai)東北(bei)(bei)部分地區加重流行，玉(yu)(yu)米三代粘蟲(chong)(chong)(chong)在(zai)(zai)東北(bei)(bei)、華北(bei)(bei)、黃淮局部出現高密度(du)(du)集中(zhong)危害。
馬鈴薯(shu)晚疫病近期(qi)(qi)(qi)(qi)擴展(zhan)加快，后期(qi)(qi)(qi)(qi)重(zhong)發(fa)風(feng)險較(jiao)大(da)。受前(qian)期(qi)(qi)(qi)(qi)降水偏(pian)少(shao)(shao)影響，華北(bei)(bei)(bei)、西北(bei)(bei)(bei)、東北(bei)(bei)(bei)馬鈴薯(shu)主產區晚疫病發(fa)生(sheng)輕于上年同期(qi)(qi)(qi)(qi)，累計發(fa)生(sheng)510萬畝，同比減少(shao)(shao)29.1%。但隨著(zhu)汛期(qi)(qi)(qi)(qi)雨水增(zeng)多，近期(qi)(qi)(qi)(qi)擴展(zhan)速度明(ming)顯加快，東北(bei)(bei)(bei)、西北(bei)(bei)(bei)局(ju)部(bu)發(fa)生(sheng)面積快速上升。預計下階段將進(jin)入發(fa)生(sheng)流(liu)行盛期(qi)(qi)(qi)(qi)，甘肅南部(bu)、黑(hei)龍江西部(bu)、內蒙古東部(bu)、山西北(bei)(bei)(bei)部(bu)和河北(bei)(bei)(bei)北(bei)(bei)(bei)部(bu)重(zhong)發(fa)流(liu)行風(feng)險較(jiao)大(da)。
針對秋糧(liang)作物重大(da)病(bing)蟲(chong)(chong)發生危害嚴峻形勢，各級(ji)農(nong)業(ye)部(bu)門和植保機構按照農(nong)業(ye)部(bu)《防病(bing)治蟲(chong)(chong)奪(duo)秋糧(liang)豐收行動方(fang)案》總體(ti)要(yao)求，認真貫徹落實全國秋糧(liang)作物重大(da)病(bing)蟲(chong)(chong)防控現場會精神，強化措施落實，努力實現“蟲(chong)(chong)口(kou)奪(duo)糧(liang)”。
