根據全(quan)省(sheng)各地植保部(bu)門去年秋季越冬基數(shu)調查結(jie)果,結(jie)合氣象因素及(ji)今年種植結(jie)構特(te)點等(deng)(deng)綜合分(fen)析,預計2011年全(quan)省(sheng)農(nong)作(zuo)物病(bing)蟲(chong)(chong)草鼠(shu)害(hai)(hai)等(deng)(deng)生(sheng)物災害(hai)(hai)總(zong)體趨勢(shi)為中等(deng)(deng)偏重發生(sheng)。其中玉米螟仍(reng)將達(da)到大發生(sheng)程(cheng)度,水稻稻瘟病(bing)和(he)馬鈴薯(shu)晚(wan)疫病(bing)在主產(chan)區(qu)有(you)中等(deng)(deng)偏重或大流行趨勢(shi),農(nong)田鼠(shu)密(mi)度居(ju)高(gao)不(bu)下。另外,大田苗期病(bing)蟲(chong)(chong)害(hai)(hai)與地下害(hai)(hai)蟲(chong)(chong)、水稻二化螟、大豆食(shi)心蟲(chong)(chong)、大豆蚜、大豆紅蜘蛛等(deng)(deng)病(bing)蟲(chong)(chong)在部(bu)分(fen)區(qu)域將造成一定程(cheng)度危(wei)害(hai)(hai),遷飛性(xing)害(hai)(hai)蟲(chong)(chong)草地螟、蝗(huang)蟲(chong)(chong)存在局部(bu)出現高(gao)蟲(chong)(chong)口(kou)密(mi)度的(de)可能,中小棚育(yu)苗的(de)水稻苗床病(bing)害(hai)(hai)、區(qu)域性(xing)的(de)農(nong)田草荒及(ji)藥害(hai)(hai)將重于(yu)常年。具體分(fen)析如下:
1、玉米病蟲害。以玉米螟(ming)為主(zhu)的玉米病蟲害總(zong)體將重(zhong)于上年,達偏重(zhong)至大發生。
去年(nian)(nian)秋季扒桿調查(cha),玉(yu)(yu)米(mi)(mi)螟百(bai)(bai)(bai)桿活(huo)蟲(chong)全(quan)省(sheng)加權平(ping)(ping)均(jun)(jun)為(wei)171.7頭(tou),比上(shang)(shang)年(nian)(nian)、常(chang)年(nian)(nian)分別上(shang)(shang)升24.6%、37.3%,越冬(dong)總(zong)蟲(chong)量(liang)達到歷史最高(gao),是常(chang)年(nian)(nian)的(de)3.2倍,比上(shang)(shang)年(nian)(nian)增(zeng)加49%,超(chao)百(bai)(bai)(bai)頭(tou)的(de)縣占48.3%,且(qie)高(gao)密(mi)度(du)蟲(chong)源多集(ji)中(zhong)在一、二(er)積(ji)溫帶玉(yu)(yu)米(mi)(mi)主(zhu)產區(qu)(qu)。其中(zhong)種植面積(ji)百(bai)(bai)(bai)萬畝以上(shang)(shang)的(de)30余個縣(市、區(qu)(qu))百(bai)(bai)(bai)桿活(huo)蟲(chong)平(ping)(ping)均(jun)(jun)達171.1頭(tou),均(jun)(jun)處(chu)于全(quan)省(sheng)最高(gao)水平(ping)(ping)。雙城、樺南、拜泉百(bai)(bai)(bai)桿活(huo)蟲(chong)數超(chao)過400頭(tou)。越冬(dong)蟲(chong)體質(zhi)量(liang)較好,全(quan)省(sheng)平(ping)(ping)均(jun)(jun)冬(dong)前存活(huo)率為(wei)88%,與(yu)常(chang)年(nian)(nian)接(jie)近。預(yu)計(ji)今(jin)年(nian)(nian)玉(yu)(yu)米(mi)(mi)螟全(quan)省(sheng)范圍內將大(da)(da)發(fa)生。另外,玉(yu)(yu)米(mi)(mi)大(da)(da)(小)斑病受密(mi)植栽培及前重(zhong)后輕施(shi)肥方式(shi)與(yu)后夏(xia)雨水較集(ji)中(zhong)的(de)氣象條件影響(xiang)將中(zhong)等(deng)偏重(zhong)發(fa)生。玉(yu)(yu)米(mi)(mi)絲黑(hei)穗病上(shang)(shang)年(nian)(nian)全(quan)省(sheng)平(ping)(ping)均(jun)(jun)病株(zhu)率為(wei)2%,低于常(chang)年(nian)(nian),預(yu)計(ji)在早播、干(gan)旱地區(qu)(qu)相對較重(zhong)。玉(yu)(yu)米(mi)(mi)頂腐病在齊齊哈爾、綏(sui)化、哈爾濱、大(da)(da)慶等(deng)玉(yu)(yu)米(mi)(mi)連作區(qu)(qu)仍會(hui)不同程度(du)發(fa)生。玉(yu)(yu)米(mi)(mi)蚜發(fa)生呈上(shang)(shang)升趨(qu)勢。
2、水稻病蟲(chong)害(hai)。以稻瘟病、二化螟為(wei)主(zhu)的(de)水稻病蟲(chong)總體將(jiang)中等(deng)偏重發生。
自2005、2006年(nian)(nian)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)稻(dao)(dao)(dao)(dao)稻(dao)(dao)(dao)(dao)瘟(wen)(wen)(wen)病在(zai)(zai)全省(sheng)大(da)流(liu)行(xing)后(hou),近幾年(nian)(nian)總(zong)體發(fa)病程度一(yi)(yi)直較(jiao)(jiao)(jiao)輕,病株(zhu)率(lv)平(ping)(ping)均(jun)2%-5%,但在(zai)(zai)東部(bu)(bu)非常(chang)(chang)(chang)發(fa)區與(yu)西部(bu)(bu)新(xin)稻(dao)(dao)(dao)(dao)區近年(nian)(nian)發(fa)生(sheng)(sheng)呈上(shang)升趨勢,且(qie)空育131等(deng)(deng)(deng)感病品(pin)種局部(bu)(bu)發(fa)生(sheng)(sheng)較(jiao)(jiao)(jiao)重(zhong),嚴重(zhong)地塊穗頸(jing)瘟(wen)(wen)(wen)病株(zhu)率(lv)達(da)30%以上(shang),甚至達(da)到80%,使得田間菌源充足。今年(nian)(nian)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)稻(dao)(dao)(dao)(dao)種植面積(ji)將大(da)幅(fu)(fu)上(shang)升,空育131、稻(dao)(dao)(dao)(dao)花香2號、墾(ken)稻(dao)(dao)(dao)(dao)12、龍粳(jing)系列等(deng)(deng)(deng)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)稻(dao)(dao)(dao)(dao)品(pin)種單一(yi)(yi)化種植比例(li)加大(da),增加了(le)大(da)面積(ji)流(liu)行(xing)的風險(xian),且(qie)據(ju)氣(qi)象部(bu)(bu)門預(yu)(yu)測,今年(nian)(nian)夏季(ji)(ji)后(hou)夏降(jiang)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)比較(jiao)(jiao)(jiao)集中,加大(da)了(le)稻(dao)(dao)(dao)(dao)瘟(wen)(wen)(wen)病尤其是穗頸(jing)瘟(wen)(wen)(wen)大(da)面積(ji)發(fa)生(sheng)(sheng)的危(wei)險(xian)性,預(yu)(yu)計(ji)(ji)今年(nian)(nian)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)稻(dao)(dao)(dao)(dao)稻(dao)(dao)(dao)(dao)瘟(wen)(wen)(wen)病在(zai)(zai)松花江(jiang)流(liu)域及三江(jiang)平(ping)(ping)原水(shui)(shui)(shui)(shui)(shui)(shui)(shui)稻(dao)(dao)(dao)(dao)主(zhu)產(chan)區有(you)中等(deng)(deng)(deng)偏(pian)重(zhong)或大(da)流(liu)行(xing)趨勢。尤其應注意前期(qi)葉(xie)瘟(wen)(wen)(wen)輕,后(hou)期(qi)穗頸(jing)瘟(wen)(wen)(wen)重(zhong)的現象。水(shui)(shui)(shui)(shui)(shui)(shui)(shui)稻(dao)(dao)(dao)(dao)二化螟(ming)去秋扒桿(gan)(gan)調查,平(ping)(ping)均(jun)百桿(gan)(gan)活蟲5.5頭,高(gao)于(yu)上(shang)年(nian)(nian)12.2%、低于(yu)常(chang)(chang)(chang)年(nian)(nian)16.1%,存(cun)活率(lv)為86.6%,與(yu)常(chang)(chang)(chang)年(nian)(nian)接近,冬季(ji)(ji)氣(qi)溫(wen)偏(pian)低,對其越冬存(cun)活有(you)一(yi)(yi)定影響,預(yu)(yu)計(ji)(ji)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)稻(dao)(dao)(dao)(dao)二化螟(ming)在(zai)(zai)主(zhu)要發(fa)生(sheng)(sheng)區為中等(deng)(deng)(deng)至中等(deng)(deng)(deng)偏(pian)重(zhong)發(fa)生(sheng)(sheng)。水(shui)(shui)(shui)(shui)(shui)(shui)(shui)稻(dao)(dao)(dao)(dao)潛(qian)葉(xie)蠅(ying)(ying)、水(shui)(shui)(shui)(shui)(shui)(shui)(shui)稻(dao)(dao)(dao)(dao)負(fu)泥蟲全省(sheng)平(ping)(ping)均(jun)每(mei)平(ping)(ping)方米越冬量(liang)分別為5.3頭、2.2頭,接近常(chang)(chang)(chang)年(nian)(nian),預(yu)(yu)計(ji)(ji)潛(qian)葉(xie)蠅(ying)(ying)、負(fu)泥蟲在(zai)(zai)山區、半山區的稻(dao)(dao)(dao)(dao)田將達(da)中等(deng)(deng)(deng)以上(shang)程度發(fa)生(sheng)(sheng)。由于(yu)今年(nian)(nian)春季(ji)(ji)氣(qi)溫(wen)變(bian)幅(fu)(fu)較(jiao)(jiao)(jiao)大(da),初春和后(hou)春有(you)階段性強降(jiang)溫(wen)過(guo)程,加大(da)了(le)水(shui)(shui)(shui)(shui)(shui)(shui)(shui)稻(dao)(dao)(dao)(dao)苗床(chuang)管理難度,一(yi)(yi)些管理水(shui)(shui)(shui)(shui)(shui)(shui)(shui)平(ping)(ping)較(jiao)(jiao)(jiao)差的中、小育苗棚水(shui)(shui)(shui)(shui)(shui)(shui)(shui)稻(dao)(dao)(dao)(dao)苗床(chuang)青(立)枯(ku)病會重(zhong)發(fa)生(sheng)(sheng)。水(shui)(shui)(shui)(shui)(shui)(shui)(shui)稻(dao)(dao)(dao)(dao)鞘(qiao)腐(fu)病、紋枯(ku)病、細菌性褐斑病、赤(chi)枯(ku)病等(deng)(deng)(deng)病害在(zai)(zai)局部(bu)(bu)地區繼續呈上(shang)升趨勢。
3、大豆(dou)(dou)(dou)病蟲害。以大豆(dou)(dou)(dou)食心蟲、大豆(dou)(dou)(dou)蚜、大豆(dou)(dou)(dou)根(gen)部(bu)病害為(wei)主的(de)大豆(dou)(dou)(dou)病蟲總體為(wei)中等至中等偏重發生(sheng)。
大(da)(da)(da)豆(dou)(dou)(dou)食(shi)心蟲(chong)(chong)(chong)(chong)蟲(chong)(chong)(chong)(chong)食(shi)率(lv)全省平均(jun)為3%,屬于(yu)(yu)(yu)較低年份,較上(shang)年、常年分(fen)別下降1.5、3.25個百(bai)分(fen)點,達(da)(da)到防治(zhi)指標(蟲(chong)(chong)(chong)(chong)食(shi)率(lv)5%)的(de)縣(xian)(市)占(zhan)21.7%,低于(yu)(yu)(yu)上(shang)年12.6個百(bai)分(fen)點,蟲(chong)(chong)(chong)(chong)食(shi)率(lv)超過10%的(de)縣(xian)(市)僅(jin)占(zhan)1.7%,各地(di)(di)(di)差(cha)異(yi)不(bu)顯(xian)著。若今年8月上(shang)中(zhong)旬沒有大(da)(da)(da)到暴雨天氣,預計大(da)(da)(da)豆(dou)(dou)(dou)食(shi)心蟲(chong)(chong)(chong)(chong)可達(da)(da)到中(zhong)等發(fa)(fa)(fa)生(sheng)(sheng)(sheng)(sheng)程(cheng)度,發(fa)(fa)(fa)生(sheng)(sheng)(sheng)(sheng)區(qu)(qu)域以(yi)(yi)(yi)齊齊哈爾(er)、黑(hei)河、哈爾(er)濱(bin)、綏化北部(bu)等地(di)(di)(di)為主(zhu)。大(da)(da)(da)豆(dou)(dou)(dou)蚜在(zai)東(dong)部(bu)越冬寄主(zhu)較多的(de)地(di)(di)(di)區(qu)(qu)將(jiang)達(da)(da)到中(zhong)等以(yi)(yi)(yi)上(shang)發(fa)(fa)(fa)生(sheng)(sheng)(sheng)(sheng)程(cheng)度。西(xi)、北部(bu)地(di)(di)(di)區(qu)(qu)的(de)大(da)(da)(da)豆(dou)(dou)(dou)紅(hong)蜘蛛發(fa)(fa)(fa)生(sheng)(sheng)(sheng)(sheng)期將(jiang)早于(yu)(yu)(yu)常年。重迎茬(cha)導致的(de)大(da)(da)(da)豆(dou)(dou)(dou)根腐(fu)病(bing)、孢(bao)囊線(xian)蟲(chong)(chong)(chong)(chong)等根部(bu)病(bing)害將(jiang)中(zhong)等偏重發(fa)(fa)(fa)生(sheng)(sheng)(sheng)(sheng),發(fa)(fa)(fa)生(sheng)(sheng)(sheng)(sheng)分(fen)布不(bu)均(jun),東(dong)部(bu)以(yi)(yi)(yi)根腐(fu)、西(xi)部(bu)以(yi)(yi)(yi)孢(bao)囊線(xian)蟲(chong)(chong)(chong)(chong)為主(zhu)。大(da)(da)(da)豆(dou)(dou)(dou)菌核(he)病(bing)在(zai)局部(bu)澇洼地(di)(di)(di)及(ji)重迎茬(cha)地(di)(di)(di)塊將(jiang)達(da)(da)中(zhong)等發(fa)(fa)(fa)生(sheng)(sheng)(sheng)(sheng)。大(da)(da)(da)豆(dou)(dou)(dou)霜霉(mei)病(bing)、大(da)(da)(da)豆(dou)(dou)(dou)褐紋病(bing)、大(da)(da)(da)豆(dou)(dou)(dou)灰斑病(bing)等大(da)(da)(da)豆(dou)(dou)(dou)生(sheng)(sheng)(sheng)(sheng)長期葉部(bu)病(bing)害將(jiang)重于(yu)(yu)(yu)常年。
4、馬鈴薯與蔬菜病蟲害。預計為偏重發生。
馬(ma)鈴(ling)薯(shu)晚疫(yi)(yi)病(bing)(bing)(bing)(bing)(bing)(bing)(bing)是影響全省馬(ma)鈴(ling)薯(shu)產量的(de)主(zhu)要病(bing)(bing)(bing)(bing)(bing)(bing)(bing)害(hai)(hai),近(jin)年(nian)田(tian)間發(fa)病(bing)(bing)(bing)(bing)(bing)(bing)(bing)較重,田(tian)間菌(jun)源豐富,且(qie)生產中(zhong)(zhong)缺少抗病(bing)(bing)(bing)(bing)(bing)(bing)(bing)品(pin)種(zhong)。由于夏(xia)季(ji)降水集中(zhong)(zhong)期與馬(ma)鈴(ling)薯(shu)易感(gan)病(bing)(bing)(bing)(bing)(bing)(bing)(bing)的(de)花蕾期基本(ben)同步,預(yu)計今年(nian)馬(ma)鈴(ling)薯(shu)晚疫(yi)(yi)病(bing)(bing)(bing)(bing)(bing)(bing)(bing)仍(reng)將(jiang)達到偏(pian)(pian)重至大發(fa)生程度(du)。今年(nian)保(bao)護地蔬(shu)菜(cai)(cai)種(zhong)植面積(ji)將(jiang)大幅增加,新增棚室管理及病(bing)(bing)(bing)(bing)(bing)(bing)(bing)蟲(chong)害(hai)(hai)防控(kong)技術水平很難保(bao)證,春季(ji)保(bao)護地蔬(shu)菜(cai)(cai)病(bing)(bing)(bing)(bing)(bing)(bing)(bing)蟲(chong)害(hai)(hai)將(jiang)偏(pian)(pian)重發(fa)生,缺素、藥(yao)害(hai)(hai)等(deng)(deng)生理性(xing)病(bing)(bing)(bing)(bing)(bing)(bing)(bing)害(hai)(hai)也將(jiang)加重。預(yu)計溫(wen)室以番茄葉霉病(bing)(bing)(bing)(bing)(bing)(bing)(bing)、灰霉病(bing)(bing)(bing)(bing)(bing)(bing)(bing)、黃瓜角斑病(bing)(bing)(bing)(bing)(bing)(bing)(bing)、菜(cai)(cai)豆疫(yi)(yi)病(bing)(bing)(bing)(bing)(bing)(bing)(bing)等(deng)(deng)低溫(wen)性(xing)病(bing)(bing)(bing)(bing)(bing)(bing)(bing)害(hai)(hai)為(wei)主(zhu),大棚以霜(shuang)霉病(bing)(bing)(bing)(bing)(bing)(bing)(bing)、晚疫(yi)(yi)病(bing)(bing)(bing)(bing)(bing)(bing)(bing)等(deng)(deng)高(gao)溫(wen)性(xing)病(bing)(bing)(bing)(bing)(bing)(bing)(bing)害(hai)(hai)為(wei)主(zhu)。棚室集中(zhong)(zhong)連(lian)片的(de)地區斑潛蠅、白粉虱等(deng)(deng)將(jiang)偏(pian)(pian)重發(fa)生。露地蔬(shu)菜(cai)(cai)小菜(cai)(cai)蛾、甘藍(lan)夜盜、菜(cai)(cai)青蟲(chong)危害(hai)(hai)將(jiang)重于常年(nian)。
5、小麥病害。預計(ji)中等偏輕至中等發生。
由于(yu)(yu)冬(dong)季降雪多,土壤濕度大,加(jia)之(zhi)初春、后(hou)春氣(qi)溫較(jiao)(jiao)低,小麥腥、散黑穗病(bing)、根腐病(bing)會(hui)重于(yu)(yu)常年,預計將達中等程度發生。夏季氣(qi)溫略高,降水較(jiao)(jiao)集中,局(ju)部地區將發生小麥赤(chi)霉病(bing)。
6、雜食性及突發性害蟲(chong)。總體(ti)為中等至中等偏重發生。
苗期害(hai)(hai)蟲(chong)與(yu)地下(xia)害(hai)(hai)蟲(chong):地老虎(hu)、蠐螬(cao)、螻蛄、金(jin)針蟲(chong)、大豆根(gen)潛(qian)蠅(ying)等(deng)地下(xia)害(hai)(hai)蟲(chong)越冬基(ji)數,全(quan)省平(ping)均(jun)平(ping)方米分(fen)別(bie)為0.45、0.4、0.3、0.56、1.63頭,金(jin)針蟲(chong)高于(yu)常(chang)年1倍,其它(ta)均(jun)略低(di)于(yu)上年與(yu)常(chang)年。今年春季大部分(fen)地區氣(qi)溫正(zheng)常(chang),降水略多,以二條葉甲、薊馬、跳甲、黑絨金(jin)龜(gui)、斑須蝽為主的苗期害(hai)(hai)蟲(chong)發生程度將(jiang)接近常(chang)年,以地老虎(hu)、蠐螬(cao)、金(jin)針蟲(chong)為主的地下(xia)害(hai)(hai)蟲(chong)將(jiang)重于(yu)常(chang)年。
遷飛性害蟲(chong)草(cao)地(di)(di)螟(ming):根據(ju)全國(guo)測(ce)報(bao)網監測(ce)調查(cha)(cha),國(guo)內(nei)草(cao)地(di)(di)螟(ming)越冬總蟲(chong)量是1996年(nian)(nian)以來第(di)三個周期內(nei)較低的(de)年(nian)(nian)份。我省也未查(cha)(cha)到(dao)越冬蟲(chong)源,但作為我省草(cao)地(di)(di)螟(ming)主要蟲(chong)源地(di)(di)的(de)俄(e)羅斯克拉斯諾雅爾(er)斯克、伊(yi)爾(er)庫(ku)茨克、西(xi)伯利亞等區域內(nei)及蒙古共(gong)和國(guo)東部(bu)等境外越冬蟲(chong)量不明,同時(shi)根據(ju)草(cao)地(di)(di)螟(ming)發生周期規(gui)律特點分析(xi),今年(nian)(nian)草(cao)地(di)(di)螟(ming)僅有局部(bu)發生的(de)可能。
蝗(huang)蟲:2009年亞洲(zhou)飛蝗(huang)在(zai)我省(sheng)西部(bu)兩市三縣一場暴(bao)發(fa)后(hou),由于防(fang)治徹底,去(qu)年并(bing)未(wei)發(fa)生。但(dan)并(bing)不排(pai)除今年個別(bie)葦(wei)塘濕地(di)仍存(cun)在(zai)局部(bu)出現高蟲口密(mi)度(du)的(de)可(ke)能。土蝗(huang)越冬卵量全省(sheng)平均每平方米(mi)1.6塊,分別(bie)下降(jiang)了40.7%、71.4%,但(dan)較高的(de)肇東(dong)(dong)、克東(dong)(dong)、尚志等地(di)仍高于常年1倍以上,預計土蝗(huang)在(zai)我省(sheng)中西部(bu)地(di)區會達到(dao)中等發(fa)生。
遷飛性害蟲粘蟲:近年二代(dai)粘蟲在我省東部地(di)區(qu)發生(sheng)區(qu)域較(jiao)廣(guang),局部地(di)塊受害較(jiao)重,且我省及江淮等一代(dai)粘蟲發生(sheng)區(qu)小麥(mai)播種面積(ji)呈回升趨(qu)勢,利于粘蟲發生(sheng)危害。因此,粘蟲在局部地(di)區(qu)將有造(zao)成(cheng)危害的(de)可(ke)能。
7、農田草害。據大部分地區監測,一年生雜草種子量,旱田平均每平方米為3623粒,水田為456.8粒,低于上年、常年15%、73%,但局部雜草種子量是常年的3倍以上,且秋季氣溫高,降水少,冬雪大,有利于雜草種子成熟及多年生繁殖器官存活,預計局部區域農田草荒將較重。旱田雜草主要種類以一年生的稗、藜、莧等為主要優勢種群,苣荬菜、鴨跖草、大(小)薊仍為生產中難防雜草。水田在用藥選擇壓力的影響下,野慈菇、澤瀉、雨久花等闊葉雜草繼續呈上升勢頭、新稻區后期稗草重。此外,土壤濕度大、除草劑用量大(da)的地(di)(di)區及旱改水的地(di)(di)塊,藥(yao)害現(xian)象(xiang)將較普遍。
8、農(nong)田鼠(shu)(shu)(shu)害。近(jin)年(nian)(nian)全(quan)省持(chi)續開展大規(gui)模統(tong)一(yi)滅鼠(shu)(shu)(shu),滅鼠(shu)(shu)(shu)區(qu)鼠(shu)(shu)(shu)密(mi)度(du)已大幅(fu)度(du)下(xia)降。全(quan)省平(ping)均百鋏(jia)(日)捕獲率為8.9%,與上年(nian)(nian)接近(jin),比歷年(nian)(nian)均值13.2%下(xia)降了4.3個百分(fen)點。其(qi)中防(fang)治(zhi)區(qu)內大部(bu)分(fen)控制在防(fang)治(zhi)指標以下(xia),但未防(fang)治(zhi)區(qu)內平(ping)均鼠(shu)(shu)(shu)密(mi)度(du)仍(reng)接近(jin)或超過(guo)10%,高出防(fang)治(zhi)指標2倍以上,林(lin)口(kou)、密(mi)山分(fen)別達到36%、18.2%。冬雪較大,氣溫較低(di),影響(xiang)害鼠(shu)(shu)(shu)覓(mi)食,預計(ji)今年(nian)(nian)春季鼠(shu)(shu)(shu)害活動(dong)早(zao),未進行大面積滅鼠(shu)(shu)(shu)的地區(qu),早(zao)春作物與水稻苗床(chuang)盜籽扒苗現象(xiang)會(hui)加重(zhong)。