總趨(qu)勢：預計(ji) 2009 年水稻(dao)(dao)中(zhong)后期病(bing)(bing)蟲(chong)(chong)呈中(zhong)等偏重發(fa)(fa)(fa)生(sheng)態勢，遷飛(fei)(fei)性(xing)(xing)害(hai)蟲(chong)(chong)、流行性(xing)(xing)病(bing)(bing)害(hai)為(wei)害(hai)突出，主(zhu)要(yao)病(bing)(bing)蟲(chong)(chong)有(you)稻(dao)(dao)瘟病(bing)(bing)、二代螟蟲(chong)(chong)、稻(dao)(dao)飛(fei)(fei)虱(shi)、稻(dao)(dao)縱卷(juan)葉(xie)(xie)螟、稻(dao)(dao)曲病(bing)(bing)及紋(wen)枯病(bing)(bing)。其中(zhong)：稻(dao)(dao)瘟病(bing)(bing)偏重發(fa)(fa)(fa)生(sheng)，預計(ji)發(fa)(fa)(fa)生(sheng)面(mian)積 350 萬(wan)畝次。二代螟蟲(chong)(chong)和(he)(he)稻(dao)(dao)飛(fei)(fei)虱(shi)偏重發(fa)(fa)(fa)生(sheng)，預計(ji)發(fa)(fa)(fa)生(sheng)面(mian)積分別為(wei) 1650 萬(wan)畝次和(he)(he) 300 萬(wan)畝次。稻(dao)(dao)縱卷(juan)葉(xie)(xie)螟、稻(dao)(dao)苞蟲(chong)(chong)、稻(dao)(dao)曲病(bing)(bing)和(he)(he)紋(wen)枯病(bing)(bing)中(zhong)等發(fa)(fa)(fa)生(sheng)，預計(ji)發(fa)(fa)(fa)生(sheng)面(mian)積分別為(wei) 200 萬(wan)畝次、 200 萬(wan)畝次、 300 萬(wan)畝次和(he)(he) 800 萬(wan)畝次。
1 、稻(dao)(dao)瘟病(bing)(bing)(bing)(bing)(bing)(bing)偏(pian)重發(fa)(fa)生(sheng)（ 4 級），預計發(fa)(fa)生(sheng)面(mian)積(ji) 350 萬(wan)畝(mu)次，其中(zhong)(zhong)穗(sui)頸(jing)瘟發(fa)(fa)生(sheng)面(mian)積(ji) 150 萬(wan)畝(mu)左(zuo)右，穗(sui)頸(jing)瘟應防(fang)面(mian)積(ji) 1000 萬(wan)畝(mu)次以上，流行(xing)區(qu)域主要是川(chuan)東北及盆(pen)周稻(dao)(dao)瘟病(bing)(bing)(bing)(bing)(bing)(bing)常(chang)(chang)發(fa)(fa)區(qu)。依(yi)據：（ 1 ）品(pin)(pin)(pin)種(zhong)(zhong)(zhong)對稻(dao)(dao)瘟病(bing)(bing)(bing)(bing)(bing)(bing)的抗性水(shui)(shui)平(ping)(ping)(ping)(ping)低(di)。 2008 年(nian)(nian) 5 個(ge)(ge)病(bing)(bing)(bing)(bing)(bing)(bing)圃(pu)監(jian)測(ce)結果顯(xian)示， 72 個(ge)(ge)監(jian)測(ce)品(pin)(pin)(pin)種(zhong)(zhong)(zhong)中(zhong)(zhong)，高感(gan)(gan)品(pin)(pin)(pin)種(zhong)(zhong)(zhong)（ 9 級） 48 個(ge)(ge)，占(zhan)(zhan)(zhan) 66.67% ；感(gan)(gan)病(bing)(bing)(bing)(bing)(bing)(bing)品(pin)(pin)(pin)種(zhong)(zhong)(zhong)（ 7-9 級） 64 個(ge)(ge)，占(zhan)(zhan)(zhan) 88.89% ；中(zhong)(zhong)感(gan)(gan)品(pin)(pin)(pin)種(zhong)(zhong)(zhong) 8 個(ge)(ge)，占(zhan)(zhan)(zhan) 11.11% 。近(jin)三年(nian)(nian)對 211 個(ge)(ge)品(pin)(pin)(pin)種(zhong)(zhong)(zhong)（組合）的監(jian)測(ce)結果表(biao)明(ming)，五個(ge)(ge)病(bing)(bing)(bing)(bing)(bing)(bing)圃(pu)中(zhong)(zhong)未(wei)發(fa)(fa)現同(tong)時達到中(zhong)(zhong)抗以上水(shui)(shui)平(ping)(ping)(ping)(ping)的品(pin)(pin)(pin)種(zhong)(zhong)(zhong)。（ 2 ）前期(qi)稻(dao)(dao)瘟病(bing)(bing)(bing)(bing)(bing)(bing)發(fa)(fa)病(bing)(bing)(bing)(bing)(bing)(bing)重于(yu)近(jin)年(nian)(nian)。截止(zhi) 7 月(yue) 14 日 ，我省有 20 個(ge)(ge)市州、 107 個(ge)(ge)縣(xian)區(qu)發(fa)(fa)生(sheng)稻(dao)(dao)瘟病(bing)(bing)(bing)(bing)(bing)(bing)，發(fa)(fa)病(bing)(bing)(bing)(bing)(bing)(bing)面(mian)積(ji)為 141.08 萬(wan)畝(mu)，高于(yu)近(jin)年(nian)(nian)，其中(zhong)(zhong)甘(gan)孜州瀘定縣(xian)已發(fa)(fa)現穗(sui)頸(jing)瘟 370 畝(mu)。近(jin)期(qi)川(chuan)東、川(chuan)中(zhong)(zhong)部分地(di)(di)區(qu)流行(xing)加快。據監(jian)測(ce)，進(jin)入 6 月(yue)以來(lai)，稻(dao)(dao)瘟病(bing)(bing)(bing)(bing)(bing)(bing)在南(nan)充、達州、巴中(zhong)(zhong)、內江(jiang)(jiang)、資陽等部分地(di)(di)方流行(xing)蔓延加快。雁江(jiang)(jiang)區(qu) 6 月(yue)中(zhong)(zhong)旬調(diao)查，平(ping)(ping)(ping)(ping)均病(bing)(bing)(bing)(bing)(bing)(bing)株(zhu)率 23.4% ，急性病(bing)(bing)(bing)(bing)(bing)(bing)斑(ban)占(zhan)(zhan)(zhan) 19.2% 。通(tong)江(jiang)(jiang)縣(xian) 6 月(yue)下旬調(diao)查，平(ping)(ping)(ping)(ping)均病(bing)(bing)(bing)(bing)(bing)(bing)株(zhu)率 7.9% ，急性病(bing)(bing)(bing)(bing)(bing)(bing)斑(ban)占(zhan)(zhan)(zhan) 32.5% 。資中(zhong)(zhong) 7 月(yue) 13 日 調(diao)查，平(ping)(ping)(ping)(ping)均病(bing)(bing)(bing)(bing)(bing)(bing)株(zhu)葉(xie)率 9.3% ，平(ping)(ping)(ping)(ping)均病(bing)(bing)(bing)(bing)(bing)(bing)指 2.67 。（ 3 ）氣象預報 7-8 月(yue)盛夏(xia)期(qi)間(jian)總(zong)降水(shui)(shui)量(liang)盆(pen)地(di)(di)東北部接(jie)近(jin)正常(chang)(chang)，省內其余地(di)(di)區(qu)偏(pian)多，盆(pen)地(di)(di)內洪澇接(jie)近(jin)常(chang)(chang)年(nian)(nian) , 其中(zhong)(zhong)東部、南(nan)部部分地(di)(di)區(qu)洪澇較常(chang)(chang)年(nian)(nian)偏(pian)重，對稻(dao)(dao)瘟病(bing)(bing)(bing)(bing)(bing)(bing)發(fa)(fa)生(sheng)無明(ming)顯(xian)不(bu)利。
2 、稻(dao)(dao)(dao)(dao)(dao)(dao)飛(fei)(fei)(fei)(fei)虱(shi)(shi)(shi)(shi)(shi)偏重(zhong)發(fa)(fa)(fa)(fa)(fa)生(sheng)(sheng)(sheng)（ 4 級），川南、川東局部大(da)(da)發(fa)(fa)(fa)(fa)(fa)生(sheng)(sheng)(sheng)，預(yu)計發(fa)(fa)(fa)(fa)(fa)生(sheng)(sheng)(sheng)面(mian)(mian)(mian)積 450 萬畝(mu)次(ci)(ci)左(zuo)右。稻(dao)(dao)(dao)(dao)(dao)(dao)縱卷(juan)葉螟(ming)中(zhong)(zhong)(zhong)等發(fa)(fa)(fa)(fa)(fa)生(sheng)(sheng)(sheng)，主要集中(zhong)(zhong)(zhong)在盆東南常發(fa)(fa)(fa)(fa)(fa)區(qu)(qu)(qu)(qu)為害(hai)，發(fa)(fa)(fa)(fa)(fa)生(sheng)(sheng)(sheng)面(mian)(mian)(mian)積 200 萬畝(mu)次(ci)(ci)。依(yi)據：（ 1 ）周(zhou)邊(bian)地(di)區(qu)(qu)(qu)(qu)大(da)(da)發(fa)(fa)(fa)(fa)(fa)生(sheng)(sheng)(sheng)，對我(wo)省(sheng)的(de)(de)(de)(de)(de)蟲(chong)源壓力大(da)(da)。今年(nian)(nian)(nian)稻(dao)(dao)(dao)(dao)(dao)(dao)飛(fei)(fei)(fei)(fei)虱(shi)(shi)(shi)(shi)(shi)在廣(guang)西、云南、貴(gui)州重(zhong)發(fa)(fa)(fa)(fa)(fa)生(sheng)(sheng)(sheng)，截止 6 月(yue) 18 日 ，云南已(yi)發(fa)(fa)(fa)(fa)(fa)生(sheng)(sheng)(sheng)稻(dao)(dao)(dao)(dao)(dao)(dao)飛(fei)(fei)(fei)(fei)虱(shi)(shi)(shi)(shi)(shi) 602 萬畝(mu)，比(bi)(bi)特大(da)(da)發(fa)(fa)(fa)(fa)(fa)生(sheng)(sheng)(sheng)的(de)(de)(de)(de)(de) 2007 年(nian)(nian)(nian)同期增加(jia) 64 萬畝(mu)。廣(guang)西今年(nian)(nian)(nian)稻(dao)(dao)(dao)(dao)(dao)(dao)飛(fei)(fei)(fei)(fei)虱(shi)(shi)(shi)(shi)(shi)全(quan)(quan)區(qu)(qu)(qu)(qu)普遍發(fa)(fa)(fa)(fa)(fa)生(sheng)(sheng)(sheng)，預(yu)計發(fa)(fa)(fa)(fa)(fa)生(sheng)(sheng)(sheng)面(mian)(mian)(mian)積 1000 萬畝(mu)以(yi)上(shang)。（ 2 ）我(wo)省(sheng)前期蟲(chong)量(liang)高。六月(yue)下旬以(yi)來，我(wo)省(sheng)盆地(di)大(da)(da)部地(di)區(qu)(qu)(qu)(qu)繼續(xu)遭遇持續(xu)降雨過程，伴隨此(ci)次(ci)(ci)降雨過程稻(dao)(dao)(dao)(dao)(dao)(dao)飛(fei)(fei)(fei)(fei)虱(shi)(shi)(shi)(shi)(shi)在我(wo)省(sheng)各地(di)又出現(xian)一(yi)個大(da)(da)的(de)(de)(de)(de)(de)遷(qian)入(ru)峰(feng)。截止 7 月(yue) 14 日 ，全(quan)(quan)省(sheng)已(yi)有(you)(you)(you)(you) 17 個市(shi)、 65 個縣（區(qu)(qu)(qu)(qu)）發(fa)(fa)(fa)(fa)(fa)現(xian)稻(dao)(dao)(dao)(dao)(dao)(dao)飛(fei)(fei)(fei)(fei)虱(shi)(shi)(shi)(shi)(shi)，其(qi)中(zhong)(zhong)(zhong) 12 個市(shi)、 54 個縣（區(qu)(qu)(qu)(qu)）田間蟲(chong)量(liang)達到防治指標，稻(dao)(dao)(dao)(dao)(dao)(dao)飛(fei)(fei)(fei)(fei)虱(shi)(shi)(shi)(shi)(shi)發(fa)(fa)(fa)(fa)(fa)生(sheng)(sheng)(sheng)面(mian)(mian)(mian)積 243.9 萬畝(mu)，比(bi)(bi)上(shang)周(zhou)增加(jia) 74.38 萬畝(mu)。瀘州百(bai)叢(cong)(cong)蟲(chong)量(liang) 5000 頭(tou)以(yi)上(shang)的(de)(de)(de)(de)(de)田塊占(zhan)發(fa)(fa)(fa)(fa)(fa)生(sheng)(sheng)(sheng)田塊的(de)(de)(de)(de)(de) 47.69% ， 5000-10000 頭(tou)的(de)(de)(de)(de)(de)站發(fa)(fa)(fa)(fa)(fa)生(sheng)(sheng)(sheng)田塊的(de)(de)(de)(de)(de) 30.77% ，達標田面(mian)(mian)(mian)積占(zhan)水(shui)稻(dao)(dao)(dao)(dao)(dao)(dao)種植(zhi)面(mian)(mian)(mian)積的(de)(de)(de)(de)(de) 80% ，個別區(qu)(qu)(qu)(qu)縣已(yi)出現(xian)通火團。近(jin)期雁江、資中(zhong)(zhong)(zhong)、仁(ren)壽、劍(jian)閣、旺(wang)蒼、元壩、梓潼(tong)、石棉、中(zhong)(zhong)(zhong)江、馬邊(bian)、樂至等波及區(qu)(qu)(qu)(qu)也已(yi)發(fa)(fa)(fa)(fa)(fa)現(xian)稻(dao)(dao)(dao)(dao)(dao)(dao)飛(fei)(fei)(fei)(fei)虱(shi)(shi)(shi)(shi)(shi)，目前還未達到防治指標。雁江 7 月(yue) 3 日 調查水(shui)稻(dao)(dao)(dao)(dao)(dao)(dao)田塊 16 塊，發(fa)(fa)(fa)(fa)(fa)生(sheng)(sheng)(sheng)稻(dao)(dao)(dao)(dao)(dao)(dao)飛(fei)(fei)(fei)(fei)虱(shi)(shi)(shi)(shi)(shi)有(you)(you)(you)(you) 5 塊，百(bai)叢(cong)(cong)蟲(chong)量(liang) 0-1460 頭(tou)，平(ping)均 213.6 頭(tou)，發(fa)(fa)(fa)(fa)(fa)生(sheng)(sheng)(sheng)期比(bi)(bi)去年(nian)(nian)(nian)提(ti)前 18 天，比(bi)(bi)大(da)(da)發(fa)(fa)(fa)(fa)(fa)生(sheng)(sheng)(sheng)年(nian)(nian)(nian)（ 2007 年(nian)(nian)(nian)）提(ti)前 10 天，百(bai)叢(cong)(cong)蟲(chong)量(liang)比(bi)(bi)去年(nian)(nian)(nian)同期多(duo) 172.3 頭(tou)，比(bi)(bi) 2007 年(nian)(nian)(nian)少 115 頭(tou)。截止目前，全(quan)(quan)省(sheng)有(you)(you)(you)(you) 11 個市(shi)、 38 個縣（區(qu)(qu)(qu)(qu)）發(fa)(fa)(fa)(fa)(fa)生(sheng)(sheng)(sheng)稻(dao)(dao)(dao)(dao)(dao)(dao)縱卷(juan)葉螟(ming)，發(fa)(fa)(fa)(fa)(fa)生(sheng)(sheng)(sheng)面(mian)(mian)(mian)積 119.3 萬畝(mu)。（ 3 ）氣象(xiang)預(yu)報 7-8 月(yue)盛夏期間總(zong)降水(shui)量(liang)盆地(di)東北部接近(jin)正(zheng)常，省(sheng)內(nei)其(qi)余地(di)區(qu)(qu)(qu)(qu)偏多(duo)，盆地(di)內(nei)洪(hong)澇接近(jin)常年(nian)(nian)(nian) , 全(quan)(quan)省(sheng)有(you)(you)(you)(you) 2-4 次(ci)(ci)區(qu)(qu)(qu)(qu)域(yu)性暴雨，有(you)(you)(you)(you)利于稻(dao)(dao)(dao)(dao)(dao)(dao)飛(fei)(fei)(fei)(fei)虱(shi)(shi)(shi)(shi)(shi)和(he)稻(dao)(dao)(dao)(dao)(dao)(dao)縱卷(juan)葉螟(ming)的(de)(de)(de)(de)(de)遷(qian)入(ru)為害(hai)。
3 、二(er)(er)代(dai)螟(ming)(ming)(ming)蟲(chong)(chong)(chong)(chong)偏(pian)(pian)重(zhong)發(fa)(fa)(fa)生（ 4 級），預(yu)計發(fa)(fa)(fa)生面積 1650 萬畝(mu)(mu)(mu)次，重(zhong)發(fa)(fa)(fa)區(qu)(qu)(qu)域為川(chuan)(chuan)西、川(chuan)(chuan)南稻區(qu)(qu)(qu)。依據(ju)：（ 1 ）今年一(yi)(yi)代(dai)螟(ming)(ming)(ming)蟲(chong)(chong)(chong)(chong)全(quan)省(sheng)總(zong)體(ti)中(zhong)等偏(pian)(pian)重(zhong)發(fa)(fa)(fa)生，發(fa)(fa)(fa)生面積為 1750 萬畝(mu)(mu)(mu)。全(quan)省(sheng) 32 個站(zhan)點螟(ming)(ming)(ming)害(hai)調查(cha)(cha)(cha)，一(yi)(yi)代(dai)螟(ming)(ming)(ming)蟲(chong)(chong)(chong)(chong)殘(can)(can)(can)蟲(chong)(chong)(chong)(chong)量(liang)高。據(ju)射(she)洪 6 月下旬(xun)調查(cha)(cha)(cha)輕、中(zhong)、重(zhong)三(san)種類型田(tian)共 12 塊， 1200 叢，共剝(bo)(bo)查(cha)(cha)(cha)到(dao)二(er)(er)化(hua)螟(ming)(ming)(ming) 56 頭(tou)，其(qi)中(zhong)死(si)蟲(chong)(chong)(chong)(chong) 2 頭(tou)，死(si)亡率(lv) 3.4% ；二(er)(er)齡幼(you)(you)蟲(chong)(chong)(chong)(chong)占 12% 、三(san)齡幼(you)(you)蟲(chong)(chong)(chong)(chong)占 46% ，四齡幼(you)(you)蟲(chong)(chong)(chong)(chong)占 26% ，五齡幼(you)(you)蟲(chong)(chong)(chong)(chong)占 16% 。未剝(bo)(bo)查(cha)(cha)(cha)到(dao)三(san)化(hua)螟(ming)(ming)(ming)、大(da)螟(ming)(ming)(ming)幼(you)(you)蟲(chong)(chong)(chong)(chong)和蛹。二(er)(er)化(hua)螟(ming)(ming)(ming)殘(can)(can)(can)蟲(chong)(chong)(chong)(chong)量(liang) 0-556-1206 頭(tou) / 畝(mu)(mu)(mu)，平(ping)均畝(mu)(mu)(mu)殘(can)(can)(can)蟲(chong)(chong)(chong)(chong)量(liang)比(bi)(bi)去年 -1.07% ；一(yi)(yi)代(dai)螟(ming)(ming)(ming)蟲(chong)(chong)(chong)(chong)危害(hai)枯(ku)心率(lv)為 0-1.09%-3.72% ，平(ping)均比(bi)(bi)去年 -2.68% 。綿竹 6 月底調查(cha)(cha)(cha)：一(yi)(yi)代(dai)二(er)(er)化(hua)螟(ming)(ming)(ming)為害(hai)枯(ku)心率(lv)平(ping)均 0.75 ％，畝(mu)(mu)(mu)殘(can)(can)(can)蟲(chong)(chong)(chong)(chong)量(liang)，平(ping)均 856.5 頭(tou)，比(bi)(bi)去年減(jian)少(shao) 33.2 ％，比(bi)(bi)常(chang)(chang)年減(jian)少(shao) 8.1% 。防(fang)治較(jiao)好田(tian)枯(ku)心率(lv) 0.58% ，畝(mu)(mu)(mu)殘(can)(can)(can)蟲(chong)(chong)(chong)(chong)量(liang) 776.4 頭(tou)；防(fang)治較(jiao)差田(tian)枯(ku)心率(lv) 2.9 ％，畝(mu)(mu)(mu)殘(can)(can)(can)蟲(chong)(chong)(chong)(chong)量(liang) 1840 頭(tou)。 7 月 6 日 各監測點剝(bo)(bo)查(cha)(cha)(cha)二(er)(er)化(hua)螟(ming)(ming)(ming)幼(you)(you)蟲(chong)(chong)(chong)(chong)比(bi)(bi)例占 94.2 ％，蛹殼占 5.8 ％，其(qi)中(zhong) 4 、 5 、 6 齡幼(you)(you)蟲(chong)(chong)(chong)(chong)占 66.5% ，預(yu)蛹占 27.8%, 發(fa)(fa)(fa)育(yu)進度比(bi)(bi)較(jiao)整齊。值(zhi)得注意的(de)是(shi)：今年三(san)化(hua)螟(ming)(ming)(ming)在川(chuan)(chuan)中(zhong)、川(chuan)(chuan)西上升明顯，局部區(qu)(qu)(qu)域三(san)化(hua)螟(ming)(ming)(ming)所占比(bi)(bi)率(lv)達 20% — 50% ，畝(mu)(mu)(mu)殘(can)(can)(can)蟲(chong)(chong)(chong)(chong)量(liang)在 600-1000 頭(tou)，高于(yu)常(chang)(chang)年，應高度警惕(ti)。（ 2 ）我省(sheng)旱育(yu)秧、免耕及再(zai)生稻面積較(jiao)大(da)，旱育(yu)秧、免耕使螟(ming)(ming)(ming)蟲(chong)(chong)(chong)(chong)越冬基數(shu)增加。川(chuan)(chuan)南、川(chuan)(chuan)東再(zai)生稻推廣有利于(yu)后期螟(ming)(ming)(ming)蟲(chong)(chong)(chong)(chong)（特別是(shi)三(san)化(hua)螟(ming)(ming)(ming)）的(de)取食。（ 3 ） 7-8 月全(quan)省(sheng)大(da)部分(fen)地區(qu)(qu)(qu)氣(qi)溫正(zheng)常(chang)(chang)略偏(pian)(pian)高，總(zong)降水量(liang)基本正(zheng)常(chang)(chang)，對螟(ming)(ming)(ming)蟲(chong)(chong)(chong)(chong)發(fa)(fa)(fa)生較(jiao)為有利。
4 、稻(dao)曲病(bing)(bing)(bing)(bing)中等發生(sheng)(sheng)，局部偏(pian)重（ 3(4) ）級，預計發生(sheng)(sheng)面積(ji) 300 萬畝。依據：（ 1 ）主栽品種對稻(dao)曲病(bing)(bing)(bing)(bing)無(wu)抗性(xing)。優(you)質稻(dao)和大(da)穗(sui)型品種種植比例大(da)，感稻(dao)曲病(bing)(bing)(bing)(bing)。去(qu)年(nian)稻(dao)曲病(bing)(bing)(bing)(bing)發生(sheng)(sheng) 287 萬畝，菌源(yuan)充(chong)足。（ 2 ）氣象(xiang)預報我省盛夏 7-8 月降水(shui)量(liang)盆(pen)地大(da)部分地區正常或(huo)略(lve)偏(pian)多，并有區域(yu)性(xing)暴雨，如果水(shui)稻(dao)孕穗(sui)期(qi)(qi)至灌漿期(qi)(qi)遇雨，稻(dao)曲病(bing)(bing)(bing)(bing)將偏(pian)重發生(sheng)(sheng)。
5 、水(shui)稻紋枯病(bing)中等(deng)發(fa)(fa)生(sheng) (3 級 ) ，預計發(fa)(fa)生(sheng)面積 800 萬畝。依(yi)據：我省旱育秧推(tui)廣(guang)面積逐年(nian)增大，因其分蘗力強、長勢旺、群體郁蔽，利于紋枯病(bing)的發(fa)(fa)生(sheng)。據綿竹(zhu) 6 月(yue)底調查：水(shui)稻發(fa)(fa)病(bing)叢率加權平均 13.8% 、病(bing)株率 9.2% 、病(bing)指 2.3 ，分別(bie)比去年(nian)同(tong)期(qi)減少 27.7% 、 64.3% 、 53.3% ，目前達防治指標面積 5 萬畝，較去年(nian)同(tong)期(qi)減少 5 萬畝。
6 、 三代稻(dao)(dao)苞(bao)蟲(chong)中等發生(sheng)（ 3 級），預計發生(sheng)面積(ji) 200 萬畝次(ci)。依(yi)據：（ 1 ）前期(qi)危害(hai)重。岳池 7 月上旬(xun)調查，稻(dao)(dao)田稻(dao)(dao)苞(bao)蟲(chong)百叢有蟲(chong)苞(bao) 13.44 — 201.36 個，平均 86.31 個。（ 2 ）受前期(qi)干旱影響，今(jin)年水稻(dao)(dao)生(sheng)育期(qi)推遲，有利(li)于三代稻(dao)(dao)苞(bao)蟲(chong)的發生(sheng)。
來(lai)源(yuan)：四川省農業廳植保站
