目(mu)前，我省早(zao)稻(dao)已(yi)處于分(fen)(fen)蘗期(qi)、部分(fen)(fen)早(zao)插(cha)早(zao)播田已(yi)進入幼(you)穗(sui)分(fen)(fen)化(hua)期(qi)，據(ju)各(ge)地監測(ce)，當前粵西(xi)地區水稻(dao)病蟲發生(sheng)較重，達中等、局部偏重程(cheng)度，其(qi)余(yu)地區水稻(dao)病蟲發生(sheng)較輕，主(zhu)要(yao)發生(sheng)的病蟲有：稻(dao)飛虱、稻(dao)縱(zong)卷葉螟(ming)(ming)和稻(dao)葉瘟，紋枯病、三(san)化(hua)螟(ming)(ming)、二化(hua)螟(ming)(ming)等也(ye)有不同程(cheng)度發生(sheng)。
稻(dao)飛虱(shi)：3月(yue)(yue)(yue)以來(lai)，稻(dao)飛虱(shi)陸(lu)續遷入(ru)我省，遷入(ru)早(zao)(zao)，但遷入(ru)蟲(chong)(chong)(chong)(chong)量(liang)(liang)(liang)(liang)(liang)較小，遷入(ru)峰(feng)次(ci)不明(ming)顯；田(tian)(tian)間發(fa)生(sheng)分(fen)布不平(ping)衡，大部分(fen)田(tian)(tian)塊蟲(chong)(chong)(chong)(chong)口(kou)密度不高(gao)(gao)(gao)，粵(yue)西稻(dao)區(qu)早(zao)(zao)插(cha)田(tian)(tian)塊發(fa)生(sheng)較重。燈(deng)(deng)下(xia)(xia)情(qing)況。白(bai)背(bei)飛虱(shi)3月(yue)(yue)(yue)1日(ri)燈(deng)(deng)下(xia)(xia)始(shi)見(jian)，比(bi)去年早(zao)(zao)8天。4月(yue)(yue)(yue)20-27日(ri)恩平(ping)站(zhan)、新興站(zhan)、廣(guang)州站(zhan)燈(deng)(deng)下(xia)(xia)監測(ce)出現蟲(chong)(chong)(chong)(chong)峰(feng)，單燈(deng)(deng)單日(ri)誘(you)(you)(you)蟲(chong)(chong)(chong)(chong)一(yi)(yi)般29-87頭(tou)(tou)(tou)。恩平(ping)站(zhan)3月(yue)(yue)(yue)1日(ri)燈(deng)(deng)下(xia)(xia)始(shi)見(jian)白(bai)背(bei)飛虱(shi)，3月(yue)(yue)(yue)8日(ri)燈(deng)(deng)下(xia)(xia)出現誘(you)(you)(you)蟲(chong)(chong)(chong)(chong)高(gao)(gao)(gao)峰(feng)，單日(ri)單燈(deng)(deng)誘(you)(you)(you)蟲(chong)(chong)(chong)(chong)216頭(tou)(tou)(tou)；4月(yue)(yue)(yue)下(xia)(xia)旬出現高(gao)(gao)(gao)峰(feng)，22-27日(ri)單燈(deng)(deng)誘(you)(you)(you)蟲(chong)(chong)(chong)(chong)169頭(tou)(tou)(tou)，高(gao)(gao)(gao)空(kong)測(ce)報燈(deng)(deng)20-26日(ri)共誘(you)(you)(you)蟲(chong)(chong)(chong)(chong)119頭(tou)(tou)(tou)；新興站(zhan)4月(yue)(yue)(yue)20-24日(ri)，燈(deng)(deng)下(xia)(xia)誘(you)(you)(you)蟲(chong)(chong)(chong)(chong)量(liang)(liang)(liang)(liang)(liang)192頭(tou)(tou)(tou)；廣(guang)州站(zhan)4月(yue)(yue)(yue)20-21日(ri)，燈(deng)(deng)下(xia)(xia)誘(you)(you)(you)蟲(chong)(chong)(chong)(chong)量(liang)(liang)(liang)(liang)(liang)141頭(tou)(tou)(tou)。田(tian)(tian)間情(qing)況。當前，全省百叢(cong)蟲(chong)(chong)(chong)(chong)量(liang)(liang)(liang)(liang)(liang)一(yi)(yi)般在20-150頭(tou)(tou)(tou)，粵(yue)西稻(dao)區(qu)早(zao)(zao)插(cha)田(tian)(tian)塊百叢(cong)蟲(chong)(chong)(chong)(chong)量(liang)(liang)(liang)(liang)(liang)一(yi)(yi)般100-200頭(tou)(tou)(tou)，高(gao)(gao)(gao)的(de)500-800頭(tou)(tou)(tou)。雷(lei)州站(zhan)調(diao)查(cha)(cha)，田(tian)(tian)間以3-4齡(ling)白(bai)背(bei)飛虱(shi)幼蟲(chong)(chong)(chong)(chong)為(wei)主，百叢(cong)蟲(chong)(chong)(chong)(chong)量(liang)(liang)(liang)(liang)(liang)一(yi)(yi)般150-200頭(tou)(tou)(tou)；陽西站(zhan)調(diao)查(cha)(cha)，百叢(cong)蟲(chong)(chong)(chong)(chong)量(liang)(liang)(liang)(liang)(liang)一(yi)(yi)般100-200頭(tou)(tou)(tou)，高(gao)(gao)(gao)的(de)600頭(tou)(tou)(tou)；陸(lu)豐站(zhan)調(diao)查(cha)(cha)，早(zao)(zao)插(cha)田(tian)(tian)百叢(cong)蟲(chong)(chong)(chong)(chong)量(liang)(liang)(liang)(liang)(liang)10-40頭(tou)(tou)(tou)，以白(bai)背(bei)飛虱(shi)為(wei)主；龍門站(zhan)調(diao)查(cha)(cha)，百叢(cong)蟲(chong)(chong)(chong)(chong)量(liang)(liang)(liang)(liang)(liang)50頭(tou)(tou)(tou)，高(gao)(gao)(gao)的(de)200頭(tou)(tou)(tou)；連平(ping)站(zhan)調(diao)查(cha)(cha)，白(bai)背(bei)飛虱(shi)百叢(cong)蟲(chong)(chong)(chong)(chong)量(liang)(liang)(liang)(liang)(liang)20頭(tou)(tou)(tou)，未發(fa)現褐飛虱(shi)。
稻縱(zong)卷(juan)葉(xie)螟：遷(qian)入(ru)早(zao)(zao)、遷(qian)入(ru)峰(feng)次多，遷(qian)入(ru)蟲(chong)峰(feng)出現早(zao)(zao)。3月(yue)(yue)(yue)(yue)3日(ri)(ri)(ri)燈(deng)下(xia)首見，于3月(yue)(yue)(yue)(yue)9-14日(ri)(ri)(ri)廉(lian)(lian)江、佛(fo)(fo)山(shan)、恩平、陽(yang)春等(deng)地監測到(dao)遷(qian)入(ru)蟲(chong)峰(feng)，進入(ru)4月(yue)(yue)(yue)(yue)，各地紛(fen)(fen)紛(fen)(fen)監測到(dao)遷(qian)入(ru)蛾(e)(e)(e)(e)量(liang)(liang)(liang)，4中下(xia)旬廉(lian)(lian)江、高(gao)(gao)州、信宜、陽(yang)春、臺山(shan)、新興等(deng)粵(yue)(yue)西(xi)縣(xian)（市、區(qu)）監測到(dao)田(tian)(tian)間(jian)蛾(e)(e)(e)(e)峰(feng)，畝(mu)(mu)(mu)(mu)蛾(e)(e)(e)(e)量(liang)(liang)(liang)一(yi)(yi)般200-600頭(tou)(tou)(tou)(tou)(tou)(tou)，高(gao)(gao)的8000-15000頭(tou)(tou)(tou)(tou)(tou)(tou)。田(tian)(tian)間(jian)以粵(yue)(yue)西(xi)稻區(qu)發(fa)生較重，其他稻區(qu)發(fa)生輕。趕蛾(e)(e)(e)(e)情況。佛(fo)(fo)山(shan)站(zhan)(zhan)(zhan)3月(yue)(yue)(yue)(yue)11日(ri)(ri)(ri)調查燈(deng)下(xia)誘蟲(chong)218頭(tou)(tou)(tou)(tou)(tou)(tou)；廉(lian)(lian)江站(zhan)(zhan)(zhan)3月(yue)(yue)(yue)(yue)11日(ri)(ri)(ri)調查早(zao)(zao)播稻田(tian)(tian)發(fa)現蛾(e)(e)(e)(e)峰(feng)，畝(mu)(mu)(mu)(mu)蛾(e)(e)(e)(e)量(liang)(liang)(liang)2000-2667頭(tou)(tou)(tou)(tou)(tou)(tou)，高(gao)(gao)的3萬頭(tou)(tou)(tou)(tou)(tou)(tou)，4月(yue)(yue)(yue)(yue)17-29日(ri)(ri)(ri)再出現持續蛾(e)(e)(e)(e)峰(feng)，高(gao)(gao)峰(feng)日(ri)(ri)(ri)4月(yue)(yue)(yue)(yue)19日(ri)(ri)(ri)畝(mu)(mu)(mu)(mu)蛾(e)(e)(e)(e)量(liang)(liang)(liang)平均(jun)1360頭(tou)(tou)(tou)(tou)(tou)(tou)，最高(gao)(gao)的26000頭(tou)(tou)(tou)(tou)(tou)(tou)；雷州站(zhan)(zhan)(zhan)4月(yue)(yue)(yue)(yue)26日(ri)(ri)(ri)調查，田(tian)(tian)間(jian)畝(mu)(mu)(mu)(mu)蛾(e)(e)(e)(e)量(liang)(liang)(liang)一(yi)(yi)般2000-4662頭(tou)(tou)(tou)(tou)(tou)(tou),高(gao)(gao)的7992頭(tou)(tou)(tou)(tou)(tou)(tou)；信宜站(zhan)(zhan)(zhan)4月(yue)(yue)(yue)(yue)29日(ri)(ri)(ri)調查，畝(mu)(mu)(mu)(mu)蛾(e)(e)(e)(e)量(liang)(liang)(liang)402頭(tou)(tou)(tou)(tou)(tou)(tou)，高(gao)(gao)的1001頭(tou)(tou)(tou)(tou)(tou)(tou)；高(gao)(gao)州站(zhan)(zhan)(zhan)4月(yue)(yue)(yue)(yue)21-23日(ri)(ri)(ri)調查，畝(mu)(mu)(mu)(mu)蛾(e)(e)(e)(e)量(liang)(liang)(liang)1286頭(tou)(tou)(tou)(tou)(tou)(tou)，高(gao)(gao)的3479頭(tou)(tou)(tou)(tou)(tou)(tou)；中山(shan)站(zhan)(zhan)(zhan)4月(yue)(yue)(yue)(yue)27日(ri)(ri)(ri)調查，畝(mu)(mu)(mu)(mu)蛾(e)(e)(e)(e)量(liang)(liang)(liang)20-100頭(tou)(tou)(tou)(tou)(tou)(tou)，高(gao)(gao)的1500-2000頭(tou)(tou)(tou)(tou)(tou)(tou)；海豐(feng)站(zhan)(zhan)(zhan)4月(yue)(yue)(yue)(yue)21日(ri)(ri)(ri)調查，畝(mu)(mu)(mu)(mu)蛾(e)(e)(e)(e)量(liang)(liang)(liang)25頭(tou)(tou)(tou)(tou)(tou)(tou)，高(gao)(gao)的70頭(tou)(tou)(tou)(tou)(tou)(tou)。田(tian)(tian)間(jian)情況。當前主(zhu)要(yao)在粵(yue)(yue)西(xi)稻區(qu)發(fa)生，畝(mu)(mu)(mu)(mu)幼(you)(you)蟲(chong)量(liang)(liang)(liang)一(yi)(yi)般1500-3000頭(tou)(tou)(tou)(tou)(tou)(tou)，高(gao)(gao)的8000-12000頭(tou)(tou)(tou)(tou)(tou)(tou)，卷(juan)葉(xie)率(lv)(lv)0.5%-3%。廉(lian)(lian)江站(zhan)(zhan)(zhan)4月(yue)(yue)(yue)(yue)30日(ri)(ri)(ri)調查，畝(mu)(mu)(mu)(mu)幼(you)(you)蟲(chong)量(liang)(liang)(liang)平均(jun)6120頭(tou)(tou)(tou)(tou)(tou)(tou)，卷(juan)葉(xie)率(lv)(lv)1.4%；高(gao)(gao)州站(zhan)(zhan)(zhan)4月(yue)(yue)(yue)(yue)30日(ri)(ri)(ri)調查，畝(mu)(mu)(mu)(mu)幼(you)(you)蟲(chong)量(liang)(liang)(liang)一(yi)(yi)般6800頭(tou)(tou)(tou)(tou)(tou)(tou)，卷(juan)葉(xie)率(lv)(lv)一(yi)(yi)般3%；臺山(shan)站(zhan)(zhan)(zhan)4月(yue)(yue)(yue)(yue)27日(ri)(ri)(ri)調查，畝(mu)(mu)(mu)(mu)幼(you)(you)蟲(chong)量(liang)(liang)(liang)400-950頭(tou)(tou)(tou)(tou)(tou)(tou)，卷(juan)葉(xie)率(lv)(lv)1%-7%；陸豐(feng)站(zhan)(zhan)(zhan)調查，主(zhu)要(yao)在早(zao)(zao)插田(tian)(tian)上發(fa)生，卷(juan)葉(xie)率(lv)(lv)一(yi)(yi)般0.08%-0.3%。
稻(dao)葉(xie)(xie)(xie)瘟(wen)(wen)：受4月連(lian)續陰雨寡照天(tian)氣的(de)(de)影(ying)響(xiang)，我省葉(xie)(xie)(xie)瘟(wen)(wen)開始(shi)發(fa)(fa)生，在(zai)部分(fen)地區感(gan)病(bing)品(pin)種(zhong)(zhong)上發(fa)(fa)生較(jiao)重。信宜(yi)站(zhan)調(diao)(diao)(diao)查(cha)，慢性型葉(xie)(xie)(xie)瘟(wen)(wen)開始(shi)發(fa)(fa)生，發(fa)(fa)病(bing)田塊病(bing)葉(xie)(xie)(xie)率(lv)平均0.2%，高(gao)(gao)(gao)達3.4%，個(ge)(ge)別品(pin)種(zhong)(zhong)如美(mei)香占發(fa)(fa)病(bing)較(jiao)重，病(bing)葉(xie)(xie)(xie)率(lv)26.67%；紫金站(zhan)調(diao)(diao)(diao)查(cha)，葉(xie)(xie)(xie)瘟(wen)(wen)已在(zai)多個(ge)(ge)鄉鎮發(fa)(fa)生，病(bing)葉(xie)(xie)(xie)率(lv)一(yi)般0.6%-1.2%，高(gao)(gao)(gao)的(de)(de)3.8%-4.2%,個(ge)(ge)別田塊發(fa)(fa)生急性型葉(xie)(xie)(xie)瘟(wen)(wen)，急性型病(bing)斑病(bing)葉(xie)(xie)(xie)率(lv)0.1%；高(gao)(gao)(gao)州站(zhan)調(diao)(diao)(diao)查(cha)，香油占病(bing)葉(xie)(xie)(xie)率(lv)1.2%；雷州站(zhan)調(diao)(diao)(diao)查(cha)，感(gan)病(bing)品(pin)種(zhong)(zhong)病(bing)葉(xie)(xie)(xie)率(lv)一(yi)般0.3%-0.6%，嚴重的(de)(de)12%；南雄站(zhan)調(diao)(diao)(diao)查(cha)，感(gan)病(bing)品(pin)種(zhong)(zhong)病(bing)葉(xie)(xie)(xie)率(lv)0.6%。
據省氣候中心預計，5月平均(jun)氣溫大部(bu)(bu)偏(pian)高(gao)0.5-1.0℃，5月雨量除粵(yue)北偏(pian)多2成(cheng)(cheng)左右外，其(qi)余地區偏(pian)少2-3成(cheng)(cheng)，有3次主要(yao)降水(shui)過程，利于(yu)水(shui)稻(dao)遷(qian)(qian)飛(fei)性(xing)害(hai)蟲持續遷(qian)(qian)入和(he)集中降落(luo)；早稻(dao)陸續進入撥節(jie)期(qi)，郁(yu)閉(bi)度增大，營養條件豐富，利于(yu)水(shui)稻(dao)遷(qian)(qian)飛(fei)性(xing)害(hai)蟲滋(zi)生(sheng)繁殖(zhi)和(he)稻(dao)瘟(wen)病的暴發(fa)流行。預計早稻(dao)分蘗期(qi)至幼穗(sui)分化期(qi)“兩遷(qian)(qian)”害(hai)蟲中等、局部(bu)(bu)偏(pian)重(zhong)發(fa)生(sheng)、鉆蛀(zhu)性(xing)螟蟲偏(pian)輕發(fa)生(sheng)、紋枯病中等發(fa)生(sheng)、葉瘟(wen)在局部(bu)(bu)稻(dao)區的感(gan)病品種上中等發(fa)生(sheng)。
各(ge)地(di)要密(mi)切(qie)監測(ce)水稻(dao)病(bing)蟲發生動態，加密(mi)監測(ce)，及時發布(bu)預報預警(jing)，因(yin)地(di)制宜地(di)科學指導(dao)農戶做好防治工作，確(que)保早稻(dao)的生產安全。
