根(gen)據我(wo)區(qu)的農作物種植結構(gou)情況、結合病蟲(chong)源基(ji)數及歷史資料綜(zong)合分析，2008年上半(ban)年我(wo)區(qu)農作物主要病蟲(chong)總體發(fa)生(sheng)(sheng)(sheng)程度為中等(deng)偏(pian)重局部大發(fa)生(sheng)(sheng)(sheng)，發(fa)生(sheng)(sheng)(sheng)面積約(yue)9800萬(wan)畝次。受前期低溫天氣影響，我(wo)區(qu)蟲(chong)害總體發(fa)生(sheng)(sheng)(sheng)偏(pian)遲(chi)，稻(dao)飛(fei)虱(shi)、稻(dao)縱卷葉螟(ming)等(deng)遷飛(fei)性害蟲(chong)呈偏(pian)重發(fa)生(sheng)(sheng)(sheng)，三化(hua)螟(ming)呈偏(pian)輕發(fa)生(sheng)(sheng)(sheng)。具(ju)體發(fa)生(sheng)(sheng)(sheng)趨勢如下：
1、水稻(dao)病(bing)蟲 發生(sheng)程度為4（5）級。發生(sheng)面(mian)積約(yue)5000萬畝(mu)次。與上(shang)年相比，蟲害發生(sheng)偏(pian)輕，病(bing)害發生(sheng)持平到(dao)略重。
稻瘟病 預計發生(sheng)(sheng)程(cheng)度為2（4）級，發生(sheng)(sheng)面積420萬畝。發生(sheng)(sheng)主要區域為桂東北及種(zhong)植感病品(pin)種(zhong)較多的山(shan)區。
稻紋枯病 預計發(fa)(fa)生(sheng)(sheng)程度為(wei)4（5）級，發(fa)(fa)生(sheng)(sheng)面(mian)積(ji)1000萬畝，全區普遍(bian)發(fa)(fa)生(sheng)(sheng)。重(zhong)發(fa)(fa)區為(wei)桂東北、桂東南(nan)的高產稻區。
三化螟 預計發(fa)生(sheng)(sheng)(sheng)程度為2（3）級，發(fa)生(sheng)(sheng)(sheng)面(mian)積325萬畝。主要發(fa)生(sheng)(sheng)(sheng)區(qu)域為桂中大(da)部及桂東北(bei)、右江河谷(gu)、桂南部分稻區(qu)。
稻飛虱(shi) 預計(ji)發(fa)生程度為4（5）級，發(fa)生面積1250萬畝(mu)，全(quan)區普遍發(fa)生。
稻(dao)縱卷葉螟 預計發生程度為3（5）級，發生面(mian)積1090萬畝(mu)，全(quan)區(qu)普遍發生。其中桂(gui)東(dong)北、桂(gui)西北大部(bu)稻(dao)區(qu)為偏(pian)重發生區(qu)。
二化螟 預計(ji)發生程度為(wei)1（3）級(ji)，發生面積65萬畝(mu)。主要在桂林市(shi)北部(bu)縣發生。
此外，水(shui)稻(dao)(dao)(dao)(dao)胡麻葉斑病(bing)、水(shui)稻(dao)(dao)(dao)(dao)根(gen)結線蟲、稻(dao)(dao)(dao)(dao)蟓(xiang)甲、稻(dao)(dao)(dao)(dao)蝽蟓(xiang)、稻(dao)(dao)(dao)(dao)薊馬、稻(dao)(dao)(dao)(dao)矮縮病(bing)、稻(dao)(dao)(dao)(dao)葉蟬(chan)等病(bing)蟲在部分稻(dao)(dao)(dao)(dao)區將有不同程度的發生。
2、玉(yu)米病蟲 發(fa)生程度(du)為2（3）級(ji)，發(fa)生面積(ji)約700萬畝(mu)次(ci)。其中局部地區的(de)玉(yu)米鐵甲(jia)蟲、玉(yu)米螟將偏重發(fa)生。
玉(yu)米鐵(tie)甲(jia)蟲 發(fa)(fa)生(sheng)程度2（4）級，發(fa)(fa)生(sheng)面積50萬(wan)畝次。主要(yao)發(fa)(fa)生(sheng)區域為河池(chi)、百色、崇(chong)左(zuo)、南寧、來賓(bin)等五市(shi)玉(yu)米種植區，其中河池(chi)、百色兩(liang)市(shi)發(fa)(fa)生(sheng)重于其他地區。
玉(yu)米螟 發(fa)生程(cheng)度(du)2（3）級(ji)，發(fa)生面(mian)積180萬(wan)畝次，玉(yu)米種植區皆有發(fa)生。
玉(yu)米蚜蟲 發(fa)生程度2（3）級(ji)，發(fa)生面(mian)積180萬畝次，玉(yu)米種(zhong)植區皆有(you)發(fa)生。
玉米紋枯病 發(fa)生程度2（3）級，發(fa)生面積140萬畝次。桂西北(bei)、桂西南發(fa)生較(jiao)重(zhong)。
玉米大小斑(ban)病 發生(sheng)程度2（3）級，發生(sheng)面積80萬畝次。桂西南(nan)、桂東(dong)南(nan)部分種植感病品(pin)種的地區發生(sheng)較重。
3、水(shui)果病蟲 發生程(cheng)度(du)為2（3）級，發生面積(ji)約1500萬畝(mu)次。與上年(nian)相比(bi)，柑桔(jie)病蟲總體(ti)發生略輕，其(qi)中蟲害除蚧殼蟲持平外，其(qi)他都偏輕，病害則略重(zhong)于上年(nian)。
柑(gan)桔（含柑(gan)橘、橙、沙田柚）病(bing)蟲(chong)發(fa)(fa)(fa)生(sheng)面積750萬(wan)畝(mu)(mu)次(ci)，其中炭疽病(bing)、潰(kui)瘍病(bing)、瘡痂(jia)病(bing)發(fa)(fa)(fa)生(sheng)程(cheng)度2（3）級，發(fa)(fa)(fa)生(sheng)面積210萬(wan)畝(mu)(mu)次(ci)；柑(gan)桔紅蜘(zhi)蛛發(fa)(fa)(fa)生(sheng)程(cheng)度3（4）級，發(fa)(fa)(fa)生(sheng)面積190萬(wan)畝(mu)(mu)次(ci)；柑(gan)桔銹(xiu)壁虱、潛葉蛾、介殼(ke)蟲(chong)發(fa)(fa)(fa)生(sheng)程(cheng)度2（3）級，發(fa)(fa)(fa)生(sheng)面積280萬(wan)畝(mu)(mu)次(ci)。
荔枝、龍眼(yan)病蟲發生(sheng)面積780萬畝次，其(qi)中霜疫霉病、蒂蛀蟲、癭螨、蝽蟓發生(sheng)程(cheng)度2（3）級。
香蕉(jiao)病(bing)(bing)蟲發(fa)生面積40萬(wan)畝次，其中葉斑病(bing)(bing)、花葉心腐(fu)病(bing)(bing)、束頂病(bing)(bing)、香蕉(jiao)弄蝶發(fa)生程度2級。
4、甘蔗病蟲 發(fa)生程度為3（4）級，發(fa)生面積約(yue)1400萬(wan)畝(mu)次。與(yu)上年(nian)相比，螟蟲偏重，薊馬、綿蚜持(chi)平。
甘(gan)蔗螟蟲(chong) 發生程(cheng)度3（4）級，發生面積480萬畝次，主要是二點螟、條螟。桂(gui)中(zhong)及桂(gui)西南蔗區發生較重。
甘蔗綿蚜 發生程度2（3）級(ji)，發生面(mian)積260萬(wan)畝(mu)次，桂中(zhong)及桂西(xi)南蔗區發生較重。。
甘(gan)蔗薊(ji)馬(ma) 發(fa)生(sheng)程(cheng)度2（3）級(ji)，發(fa)生(sheng)面積380 萬畝次(ci)，桂中(zhong)及桂西(xi)南蔗區(qu)發(fa)生(sheng)較重。
蔗根土天(tian)牛 發生(sheng)程度1（3）級，發生(sheng)面積(ji)90萬畝次。
梢腐病、黑穗(sui)病、鳳梨病發(fa)生(sheng)程度1（2）級，發(fa)生(sheng)面積共160萬(wan)畝次，桂(gui)中及桂(gui)西南蔗區(qu)發(fa)生(sheng)較重。
5、蔬菜病(bing)蟲 發(fa)生(sheng)程(cheng)度為3級(ji)，發(fa)生(sheng)面(mian)積約850萬畝次，個蔬菜種植區(qu)普遍發(fa)生(sheng)的病(bing)蟲有：
菜蚜 發生程度2（3）級，發生面積(ji)150萬畝(mu)次。
小菜蛾 發(fa)生程度2（4）級，發(fa)生面積110萬畝次。
菜青蟲 發生(sheng)程度(du)2（3）級，發生(sheng)面(mian)積100萬畝(mu)次。
黃曲條跳甲(jia) 發(fa)生程(cheng)度3（4）級，發(fa)生面積(ji)130萬畝次
白菜軟腐病 發(fa)生程度(du)2（3）級，發(fa)生面積50萬畝次(ci)。
白菜(cai)霜霉(mei)病 發生程(cheng)度2（3）級，發生面(mian)積60萬畝次。
瓜(gua)類枯(ku)萎病 發生(sheng)程度2級，發生(sheng)面積30萬畝次。
瓜類疫病 發生程度(du)2（3）級，發生面積40萬畝次(ci)。
6、其他病蟲
鼠害 發生程度3級(ji)，發生面積1050萬畝次(ci)。普遍發生，山區、旱地(di)發生偏重(zhong)。
草害 ; 發生(sheng)程(cheng)度3級，發生(sheng)面積3000萬畝次。
蝗蟲 發生面(mian)積210萬畝(mu)次(ci)(ci)，其中東亞飛(fei)蝗（夏蝗）發生面(mian)積13萬畝(mu)次(ci)(ci)。
粘蟲 桂(gui)西北、桂(gui)中(zhong)、右江(jiang)河谷(gu)等地的局部將偏(pian)重發(fa)生，發(fa)生面積20萬畝次(ci)。
主要依據
1 蟲源面積
2007年(nian)農作物下半年(nian)主要病(bing)(bing)(bing)蟲(chong)(chong)總體發生面(mian)積(ji)9085.0萬(wan)(wan)(wan)(wan)(wan)(wan)(wan)(wan)畝(mu)(mu)(mu)(mu)(mu)次(ci)(ci)(ci)，比上(shang)年(nian)增151.5萬(wan)(wan)(wan)(wan)(wan)(wan)(wan)(wan)畝(mu)(mu)(mu)(mu)(mu)次(ci)(ci)(ci)。其(qi)(qi)中水稻病(bing)(bing)(bing)蟲(chong)(chong)發生面(mian)積(ji)4744.2萬(wan)(wan)(wan)(wan)(wan)(wan)(wan)(wan)畝(mu)(mu)(mu)(mu)(mu)次(ci)(ci)(ci)，比上(shang)年(nian)增107.2萬(wan)(wan)(wan)(wan)(wan)(wan)(wan)(wan)畝(mu)(mu)(mu)(mu)(mu)次(ci)(ci)(ci)，蔬(shu)(shu)菜(cai)病(bing)(bing)(bing)蟲(chong)(chong)發生面(mian)積(ji)1210.6萬(wan)(wan)(wan)(wan)(wan)(wan)(wan)(wan)畝(mu)(mu)(mu)(mu)(mu)次(ci)(ci)(ci)，比上(shang)年(nian)減(jian)少(shao)(shao)(shao)74.1萬(wan)(wan)(wan)(wan)(wan)(wan)(wan)(wan)畝(mu)(mu)(mu)(mu)(mu)次(ci)(ci)(ci)。比較(jiao)（與2007年(nian)下半年(nian)比）水稻、蔬(shu)(shu)菜(cai)、果樹上(shang)發生面(mian)積(ji)較(jiao)大的21種(zhong)病(bing)(bing)(bing)蟲(chong)(chong)，水稻上(shang)三(san)化螟減(jian)少(shao)(shao)(shao)56.8萬(wan)(wan)(wan)(wan)(wan)(wan)(wan)(wan)畝(mu)(mu)(mu)(mu)(mu)次(ci)(ci)(ci)，稻瘟病(bing)(bing)(bing)增加(jia)(jia)41.0萬(wan)(wan)(wan)(wan)(wan)(wan)(wan)(wan)畝(mu)(mu)(mu)(mu)(mu)次(ci)(ci)(ci)，稻飛虱增加(jia)(jia)116.0萬(wan)(wan)(wan)(wan)(wan)(wan)(wan)(wan)畝(mu)(mu)(mu)(mu)(mu)次(ci)(ci)(ci)，其(qi)(qi)余病(bing)(bing)(bing)蟲(chong)(chong)持平到(dao)(dao)接近(jin)；玉(yu)米(mi)上(shang)玉(yu)米(mi)螟減(jian)少(shao)(shao)(shao)13.3萬(wan)(wan)(wan)(wan)(wan)(wan)(wan)(wan)畝(mu)(mu)(mu)(mu)(mu)次(ci)(ci)(ci)，玉(yu)米(mi)紋(wen)枯病(bing)(bing)(bing)減(jian)少(shao)(shao)(shao)114.0萬(wan)(wan)(wan)(wan)(wan)(wan)(wan)(wan)畝(mu)(mu)(mu)(mu)(mu)次(ci)(ci)(ci)，其(qi)(qi)他病(bing)(bing)(bing)蟲(chong)(chong)持平到(dao)(dao)略多(duo)；柑(gan)(gan)(gan)桔(jie)(jie)上(shang)除柑(gan)(gan)(gan)桔(jie)(jie)銹螨增加(jia)(jia)9.6萬(wan)(wan)(wan)(wan)(wan)(wan)(wan)(wan)畝(mu)(mu)(mu)(mu)(mu)次(ci)(ci)(ci)外(wai)，其(qi)(qi)他病(bing)(bing)(bing)蟲(chong)(chong)發生面(mian)積(ji)大多(duo)下降，其(qi)(qi)中柑(gan)(gan)(gan)桔(jie)(jie)葉螨減(jian)少(shao)(shao)(shao)98.5萬(wan)(wan)(wan)(wan)(wan)(wan)(wan)(wan)畝(mu)(mu)(mu)(mu)(mu)次(ci)(ci)(ci)，柑(gan)(gan)(gan)桔(jie)(jie)蚧(jie)類減(jian)少(shao)(shao)(shao)40.0萬(wan)(wan)(wan)(wan)(wan)(wan)(wan)(wan)畝(mu)(mu)(mu)(mu)(mu)次(ci)(ci)(ci)，柑(gan)(gan)(gan)桔(jie)(jie)潛葉蛾減(jian)少(shao)(shao)(shao)40.9萬(wan)(wan)(wan)(wan)(wan)(wan)(wan)(wan)畝(mu)(mu)(mu)(mu)(mu)次(ci)(ci)(ci)，柑(gan)(gan)(gan)桔(jie)(jie)瘡痂病(bing)(bing)(bing)減(jian)少(shao)(shao)(shao)92.8萬(wan)(wan)(wan)(wan)(wan)(wan)(wan)(wan)畝(mu)(mu)(mu)(mu)(mu)次(ci)(ci)(ci)，柑(gan)(gan)(gan)桔(jie)(jie)炭疽(ju)病(bing)(bing)(bing)減(jian)少(shao)(shao)(shao)33.3萬(wan)(wan)(wan)(wan)(wan)(wan)(wan)(wan)畝(mu)(mu)(mu)(mu)(mu)次(ci)(ci)(ci)；甘(gan)蔗(zhe)(zhe)蟲(chong)(chong)害(hai)增加(jia)(jia)明顯，甘(gan)蔗(zhe)(zhe)螟、甘(gan)蔗(zhe)(zhe)綿蚜、甘(gan)蔗(zhe)(zhe)薊馬(ma)分別增加(jia)(jia)了69.4、73.0、93.6萬(wan)(wan)(wan)(wan)(wan)(wan)(wan)(wan)畝(mu)(mu)(mu)(mu)(mu)次(ci)(ci)(ci)；蔬(shu)(shu)菜(cai)上(shang)白菜(cai)軟腐(fu)病(bing)(bing)(bing)減(jian)少(shao)(shao)(shao)88.7萬(wan)(wan)(wan)(wan)(wan)(wan)(wan)(wan)畝(mu)(mu)(mu)(mu)(mu)次(ci)(ci)(ci)，小菜(cai)蛾減(jian)少(shao)(shao)(shao)27.3萬(wan)(wan)(wan)(wan)(wan)(wan)(wan)(wan)畝(mu)(mu)(mu)(mu)(mu)次(ci)(ci)(ci)，豆莢(jia)螟減(jian)少(shao)(shao)(shao)42.2萬(wan)(wan)(wan)(wan)(wan)(wan)(wan)(wan)畝(mu)(mu)(mu)(mu)(mu)次(ci)(ci)(ci)，菜(cai)青蟲(chong)(chong)增加(jia)(jia)136.8萬(wan)(wan)(wan)(wan)(wan)(wan)(wan)(wan)畝(mu)(mu)(mu)(mu)(mu)次(ci)(ci)(ci)，其(qi)(qi)余病(bing)(bing)(bing)蟲(chong)(chong)持平到(dao)(dao)接近(jin)。
2 病蟲源基數
近(jin)期各(ge)地(di)(di)進行病蟲(chong)(chong)基數冬(dong)后調查(cha)(cha)(cha)表明，受低(di)溫凍雨(yu)影(ying)響，冬(dong)后蟲(chong)(chong)源(yuan)基數有所下降。與(yu)上(shang)(shang)(shang)年(nian)(nian)(nian)(nian)同(tong)(tong)期相比(bi)(bi)：三化螟越(yue)冬(dong)死亡率(lv)(lv)偏(pian)高(gao)，殘蟲(chong)(chong)密(mi)度(du)(du)下降；玉米鐵甲蟲(chong)(chong)、鼠(shu)(shu)密(mi)度(du)(du)偏(pian)低(di)；水稻紋(wen)枯病菌核(he)量大(da)部減少(shao)(shao)(shao)。三化螟 3月(yue)(yue)(yue)上(shang)(shang)(shang)旬各(ge)地(di)(di)調查(cha)(cha)(cha)越(yue)冬(dong)代殘蟲(chong)(chong)，越(yue)冬(dong)死亡率(lv)(lv)偏(pian)高(gao)，統計興安等43個(ge)縣(xian)(xian)（市(shi)、區(qu)）各(ge)類型田(tian)加權死亡率(lv)(lv)為(wei)(wei)(wei)(wei)(wei)13.9%，分(fen)別比(bi)(bi)上(shang)(shang)(shang)年(nian)(nian)(nian)(nian)同(tong)(tong)期、歷年(nian)(nian)(nian)(nian)平均(jun)(jun)增79.3%、45.5%；平均(jun)(jun)殘蟲(chong)(chong)量與(yu)上(shang)(shang)(shang)年(nian)(nian)(nian)(nian)比(bi)(bi)較大(da)部偏(pian)少(shao)(shao)(shao)；統計全州(zhou)(zhou)等55個(ge)縣(xian)(xian)（市(shi)、區(qu)）各(ge)類型田(tian)加權平均(jun)(jun)蟲(chong)(chong)口密(mi)度(du)(du)為(wei)(wei)(wei)(wei)(wei)505.8頭(tou)/畝，分(fen)別比(bi)(bi)上(shang)(shang)(shang)年(nian)(nian)(nian)(nian)同(tong)(tong)期、歷年(nian)(nian)(nian)(nian)平均(jun)(jun)減36.1%、52.1%。稻飛虱 燈(deng)下監測：始見期出現(xian)(xian)在3月(yue)(yue)(yue)上(shang)(shang)(shang)旬初，接近(jin)上(shang)(shang)(shang)年(nian)(nian)(nian)(nian)，3月(yue)(yue)(yue)1日，都安燈(deng)下已誘到稻飛虱。田(tian)間情況：田(tian)間出現(xian)(xian)比(bi)(bi)上(shang)(shang)(shang)年(nian)(nian)(nian)(nian)偏(pian)遲，防城(cheng)、玉州(zhou)(zhou)、合浦3月(yue)(yue)(yue)上(shang)(shang)(shang)旬調查(cha)(cha)(cha)，皆(jie)未發現(xian)(xian)稻飛虱。稻縱卷(juan)葉(xie)螟 截止3月(yue)(yue)(yue)15日，防城(cheng)、玉州(zhou)(zhou)、合浦等縣(xian)(xian)調查(cha)(cha)(cha)，發生比(bi)(bi)上(shang)(shang)(shang)年(nian)(nian)(nian)(nian)偏(pian)遲。防城(cheng)區(qu)3月(yue)(yue)(yue)10日在水渠邊雜(za)草(cao)上(shang)(shang)(shang)趕蛾，畝有成蟲(chong)(chong)45頭(tou)，其余(yu)兩縣(xian)(xian)田(tian)間尚未發現(xian)(xian)。稻紋(wen)枯病 大(da)部稻區(qu)各(ge)類型田(tian)平均(jun)(jun)菌核(he)量一(yi)般在0.7萬(wan)～8.8萬(wan)粒(li)/畝，高(gao)的(de)10.6~19.1萬(wan)粒(li)/畝，與(yu)上(shang)(shang)(shang)年(nian)(nian)(nian)(nian)相比(bi)(bi)，菌核(he)量減少(shao)(shao)(shao)4.1%~25.0%。玉米鐵甲蟲(chong)(chong) 東蘭(lan)調查(cha)(cha)(cha)，雜(za)草(cao)地(di)(di)密(mi)度(du)(du)平均(jun)(jun)0.03頭(tou)/米2，比(bi)(bi)去(qu)年(nian)(nian)(nian)(nian)同(tong)(tong)期（3.9頭(tou)/米2）少(shao)(shao)(shao)99.2%。南丹(dan)3月(yue)(yue)(yue)3日調查(cha)(cha)(cha)，雜(za)草(cao)地(di)(di)最高(gao)有36頭(tou)。大(da)化縣(xian)(xian)3月(yue)(yue)(yue)13日調查(cha)(cha)(cha)雜(za)草(cao)地(di)(di)，未發現(xian)(xian)有蟲(chong)(chong)。東亞飛蝗 興賓區(qu)3月(yue)(yue)(yue)10日在大(da)灣、正龍(long)鄉、小(xiao)平陽甘蔗及(ji)荒(huang)草(cao)地(di)(di)取120樣點(dian)調查(cha)(cha)(cha)，未發現(xian)(xian)有東亞飛蝗卵(luan)塊。害鼠(shu)(shu) 據靈(ling)川(chuan)、柳(liu)江、靈(ling)山、扶綏(sui)等縣(xian)(xian)近(jin)期調查(cha)(cha)(cha)：靈(ling)川(chuan)縣(xian)(xian)農田(tian)捕獲(huo)率(lv)(lv)為(wei)(wei)(wei)(wei)(wei)24.6％；柳(liu)江縣(xian)(xian)農田(tian)盜洞率(lv)(lv)為(wei)(wei)(wei)(wei)(wei)9.5％～28.6％，菜(cai)地(di)(di)盜洞率(lv)(lv)為(wei)(wei)(wei)(wei)(wei)5.7％～16.0％，畬地(di)(di)盜洞率(lv)(lv)為(wei)(wei)(wei)(wei)(wei)5.1％～13.6％，同(tong)(tong)比(bi)(bi)減少(shao)(shao)(shao)0.3～1.4個(ge)百分(fen)點(dian)；靈(ling)山縣(xian)(xian)農區(qu)捕獲(huo)率(lv)(lv)為(wei)(wei)(wei)(wei)(wei)13.6％，同(tong)(tong)比(bi)(bi)增2.7個(ge)百分(fen)點(dian)；扶綏(sui)縣(xian)(xian)農田(tian)鼠(shu)(shu)密(mi)度(du)(du)一(yi)般為(wei)(wei)(wei)(wei)(wei)1.8頭(tou)/畝，高(gao)的(de)為(wei)(wei)(wei)(wei)(wei)6頭(tou)/畝，同(tong)(tong)比(bi)(bi)偏(pian)少(shao)(shao)(shao)0.4～0.6頭(tou)/畝，馬鈴薯(shu)被害株率(lv)(lv)為(wei)(wei)(wei)(wei)(wei)5％左右(you)，甘蔗被害株率(lv)(lv)為(wei)(wei)(wei)(wei)(wei)2.0％～8.0％。
3 農事(shi)活動
2008年(nian)(nian)全(quan)(quan)區早稻(dao)計劃(hua)種(zhong)植面(mian)積(ji)(ji)為1448.7萬(wan)(wan)(wan)(wan)畝(mu)(mu)(mu)(mu)(mu)(mu)(mu)，比(bi)(bi)上(shang)年(nian)(nian)增25.1萬(wan)(wan)(wan)(wan)畝(mu)(mu)(mu)(mu)(mu)(mu)(mu)；其中雜交稻(dao)1135.7萬(wan)(wan)(wan)(wan)畝(mu)(mu)(mu)(mu)(mu)(mu)(mu)，比(bi)(bi)上(shang)年(nian)(nian)增24.8萬(wan)(wan)(wan)(wan)畝(mu)(mu)(mu)(mu)(mu)(mu)(mu)；優(you)質稻(dao)1174.4萬(wan)(wan)(wan)(wan)畝(mu)(mu)(mu)(mu)(mu)(mu)(mu)，比(bi)(bi)上(shang)年(nian)(nian)增29.9萬(wan)(wan)(wan)(wan)畝(mu)(mu)(mu)(mu)(mu)(mu)(mu)；旱育秧(yang)837.7萬(wan)(wan)(wan)(wan)畝(mu)(mu)(mu)(mu)(mu)(mu)(mu)，比(bi)(bi)上(shang)年(nian)(nian)減17.6萬(wan)(wan)(wan)(wan)畝(mu)(mu)(mu)(mu)(mu)(mu)(mu)；拋秧(yang)1205.2萬(wan)(wan)(wan)(wan)畝(mu)(mu)(mu)(mu)(mu)(mu)(mu)，比(bi)(bi)上(shang)年(nian)(nian)增33.7萬(wan)(wan)(wan)(wan)畝(mu)(mu)(mu)(mu)(mu)(mu)(mu)；免耕506.9萬(wan)(wan)(wan)(wan)畝(mu)(mu)(mu)(mu)(mu)(mu)(mu)，比(bi)(bi)上(shang)年(nian)(nian)增45.2萬(wan)(wan)(wan)(wan)畝(mu)(mu)(mu)(mu)(mu)(mu)(mu)。受前(qian)期低溫雨雪天氣影響(xiang)，春種(zhong)進度與去年(nian)(nian)同(tong)(tong)(tong)期相比(bi)(bi)差距較大，截止(zhi)3月(yue)20日(ri)，全(quan)(quan)區已種(zhong)旱地作物1943.1萬(wan)(wan)(wan)(wan)畝(mu)(mu)(mu)(mu)(mu)(mu)(mu)，同(tong)(tong)(tong)比(bi)(bi)少(shao)22.5萬(wan)(wan)(wan)(wan)畝(mu)(mu)(mu)(mu)(mu)(mu)(mu)，其中旱糧作物595.86萬(wan)(wan)(wan)(wan)畝(mu)(mu)(mu)(mu)(mu)(mu)(mu)，同(tong)(tong)(tong)比(bi)(bi)多74.13萬(wan)(wan)(wan)(wan)畝(mu)(mu)(mu)(mu)(mu)(mu)(mu)，經濟作物1347.2萬(wan)(wan)(wan)(wan)畝(mu)(mu)(mu)(mu)(mu)(mu)(mu)，同(tong)(tong)(tong)比(bi)(bi)少(shao)96.63萬(wan)(wan)(wan)(wan)畝(mu)(mu)(mu)(mu)(mu)(mu)(mu)。截止(zhi)3月(yue)20日(ri)統計，全(quan)(quan)區犁耙田(tian)為535.8萬(wan)(wan)(wan)(wan)畝(mu)(mu)(mu)(mu)(mu)(mu)(mu)，同(tong)(tong)(tong)比(bi)(bi)少(shao)69.6萬(wan)(wan)(wan)(wan)畝(mu)(mu)(mu)(mu)(mu)(mu)(mu)，占早稻(dao)計劃(hua)面(mian)積(ji)(ji)的37.0%，全(quan)(quan)區機耕面(mian)積(ji)(ji)302.8萬(wan)(wan)(wan)(wan)畝(mu)(mu)(mu)(mu)(mu)(mu)(mu)，同(tong)(tong)(tong)比(bi)(bi)少(shao)21.3萬(wan)(wan)(wan)(wan)畝(mu)(mu)(mu)(mu)(mu)(mu)(mu)。
4 氣候因素
2008年2月全區(qu)(qu)平均(jun)氣溫(wen)9.7℃，比(bi)常年同(tong)(tong)期偏(pian)(pian)低2.8℃，偏(pian)(pian)低居(ju)1951年以(yi)來同(tong)(tong)期的第五位。其中桂林市(shi)(shi)(shi)大(da)部(bu)及金秀、三江、南丹、樂(le)業、富川等地(di)在8.0℃以(yi)下，江州、東(dong)興、龍州在12.0℃以(yi)上(shang)，其余(yu)地(di)區(qu)(qu)8.0~11.9℃。溫(wen)度抑制部(bu)分(fen)病蟲的發育。全區(qu)(qu)平均(jun)降雨量75.1毫米，比(bi)常年同(tong)(tong)期偏(pian)(pian)多3成。其中，玉林市(shi)(shi)(shi)、梧州市(shi)(shi)(shi)、北海(hai)市(shi)(shi)(shi)、百色(se)市(shi)(shi)(shi)北部(bu)山區(qu)(qu)、賀州市(shi)(shi)(shi)大(da)部(bu)、欽州市(shi)(shi)(shi)大(da)部(bu)及資源、全州、防城(cheng)等地(di)正常到偏(pian)(pian)少(shao)1~5成，其余(yu)地(di)區(qu)(qu)偏(pian)(pian)多1成至1.6倍。截止3月上(shang)旬(xun)末統計：全區(qu)(qu)水庫有效蓄水量為38.82億立方(fang)米，比(bi)上(shang)年同(tong)(tong)期減少(shao)6.58億。
來源：廣西壯族自治區(qu)農作物病蟲測報站
