小(xiao)麥(mai)條(tiao)鏽(xiu)病(bing)屬(shu)世(shi)界(jie)性(xing)禾(he)穀(gu)類(lei)重(zhong)要(yao)病(bing)害(hai),發(fa)生(sheng)範(fan)圍(wei)廣(guang),流(liu)行(xing)成(cheng)災(zai)頻(pin)率(lv)高(gao),危(wei)害(hai)嚴(yan)重(zhong),是(shi)影(ying)響(xiang)我(wo)國(guo)小(xiao)麥(mai)安(an)全(quan)生(sheng)產(chan)的(de)重(zhong)要(yao)生(sheng)物(wu)災(zai)害(hai)。據(ju)有(you)關(guan)專(zhuan)家(jia)的(de)分(fen)析(xi)預(yu)測(ce),小(xiao)麥(mai)條(tiao)鏽(xiu)病(bing)菌(jun)源(yuan)基(ji)地(di)秋(qiu)苗(miao)及(ji)自(zi)生(sheng)麥(mai)苗(miao)病(bing)情(qing)嚴(yan)重(zhong),菌(jun)量(liang)較(jiao)大(da),小(xiao)麥(mai)感(gan)病(bing)品(pin)種(zhong)廣(guang)泛(fan)存(cun)在(zai),去(qu)冬(dong)今(jin)春(chun)氣(qi)候(hou)條(tiao)件(jian)適(shi)宜(yi),今(jin)年(nian)全(quan)國(guo)小(xiao)麥(mai)條(tiao)鏽(xiu)病(bing)將(jiang)發(fa)生(sheng)偏(pian)重(zhong)以(yi)上(shang)流(liu)行(xing)態(tai)勢(shi),麵(mian)積(ji)約(yue)8000萬畝。
在(zai)我(wo)國(guo),小(xiao)麥(mai)條(tiao)鏽(xiu)菌(jun)在(zai)高(gao)寒(han)冷(leng)涼(liang)的(de)西(xi)部(bu)地(di)區(qu)越(yue)夏(xia),在(zai)東(dong)部(bu)麥(mai)區(qu)越(yue)冬(dong),麥(mai)區(qu)間(jian)存(cun)在(zai)大(da)規(gui)模(mo)菌(jun)源(yuan)交(jiao)流(liu),病(bing)菌(jun)春(chun)去(qu)秋(qiu)來(lai),循(xun)環(huan)往(wang)複(fu),構(gou)成(cheng)全(quan)國(guo)大(da)區(qu)流(liu)行(xing)。因(yin)此(ci),綜(zong)合(he)治(zhi)理(li)西(xi)北(bei)和(he)西(xi)南(nan)越(yue)夏(xia)易(yi)變(bian)區(qu)、保護廣大冬麥區,是持續控製我國小麥條鏽病流行危害的基本戰略。隴南海拔1600~1800米、川西北海拔1900~2500米(mi)地(di)區(qu)為(wei)條(tiao)鏽(xiu)菌(jun)越(yue)夏(xia)和(he)早(zao)播(bo)秋(qiu)苗(miao)菌(jun)源(yuan)主(zhu)要(yao)集(ji)中(zhong)地(di),是(shi)條(tiao)鏽(xiu)病(bing)發(fa)生(sheng)流(liu)行(xing)的(de)關(guan)鍵(jian)地(di)帶(dai),亦(yi)是(shi)控(kong)製(zhi)條(tiao)鏽(xiu)菌(jun)源(yuan)基(ji)地(di)的(de)重(zhong)中(zhong)之(zhi)重(zhong)。可(ke)采(cai)取(qu)的(de)具(ju)體(ti)措(cuo)施(shi)主(zhu)要(yao)有(you):
調整種植業結構,提高作物多樣性
結合國家退耕還林還牧、長江上遊水利治理工程等,在隴南和川西北等條鏽菌越夏異變區進行作物結構調整,高山坡區實施退耕還林、還牧,發展經濟林,半山區擴種地膜玉米、馬鈴薯、蠶can豆dou和he中zhong藥yao材cai等deng多duo種zhong高gao經jing濟ji效xiao益yi作zuo物wu,取qu代dai部bu分fen小xiao麥mai種zhong植zhi,打da破po以yi小xiao麥mai為wei主zhu的de簡jian單dan作zuo物wu布bu局ju,提ti高gao作zuo物wu多duo樣yang性xing,既ji可ke大da大da降jiang低di條tiao鏽xiu菌jun越yue夏xia易yi變bian區qu秋qiu苗miao菌jun源yuan數shu量liang,又you能neng使shi貧pin困kun山shan區qu農nong民min脫tuo貧pin致zhi富fu。例li如ru,地di膜mo玉yu米mi在zai海hai拔ba1400~2400米之間種植,畝產量大多能達到400~500公斤,其經濟收入是小麥收入的2~3倍(bei),既(ji)能(neng)增(zeng)產(chan)又(you)能(neng)增(zeng)收(shou)。在(zai)隴(long)南(nan)和(he)川(chuan)西(xi)北(bei)等(deng)條(tiao)鏽(xiu)菌(jun)越(yue)夏(xia)異(yi)變(bian)區(qu),通(tong)過(guo)作(zuo)物(wu)結(jie)構(gou)調(tiao)整(zheng),壓(ya)縮(suo)小(xiao)麥(mai)播(bo)種(zhong)麵(mian)積(ji),減(jian)少(shao)條(tiao)鏽(xiu)病(bing)越(yue)夏(xia)區(qu)菌(jun)源(yuan),對(dui)於(yu)控(kong)製(zhi)全(quan)國(guo)小(xiao)麥(mai)條(tiao)鏽(xiu)病(bing)流(liu)行(xing)危(wei)害(hai)具(ju)有(you)重(zhong)要(yao)戰(zhan)略(lve)意(yi)義(yi)。在(zai)我(wo)國(guo)小(xiao)麥(mai)稈(gan)鏽(xiu)病(bing)治(zhi)理(li)方(fang)麵(mian),通(tong)過(guo)作(zuo)物(wu)結(jie)構(gou)調(tiao)整(zheng),在(zai)閩(min)南(nan)稈(gan)鏽(xiu)菌(jun)越(yue)冬(dong)基(ji)地(di)停(ting)種(zhong)"年糕麥",鏟除了稈鏽病越冬菌源,加上不斷推出大量抗病品種,從而使該病害在我國得以長期控製就是成功的例證。
實施抗病基因合理布局,建立品種遺傳多樣性
小xiao麥mai條tiao鏽xiu病bing的de發fa生sheng是shi小xiao麥mai品pin種zhong和he鏽xiu菌jun群qun體ti在zai一yi定ding環huan境jing條tiao件jian下xia互hu作zuo的de結jie果guo。小xiao麥mai生sheng產chan品pin種zhong抗kang病bing基ji因yin多duo樣yang性xing和he豐feng富fu度du的de提ti高gao,不bu利li於yu病bing菌jun群qun體ti的de定ding向xiang選xuan擇ze,從cong而er減jian少shao病bing菌jun新xin小xiao種zhong產chan生sheng和he發fa展zhan的de機ji會hui,使shi抗kang病bing品pin種zhong的de抗kang性xing得de以yi相xiang對dui持chi久jiu化hua。基ji本ben途tu徑jing是shi:(1)廣泛發掘抗病資源,建立抗病基因庫;(2)研究抗病機製及其遺傳特點,揭示抗性本質;(3)根據生態區劃,強化生態育種;(4)各類抗性兼蓄並用,提高抗病基因豐富度;(5)培育多基因聚合品種和多係品種,達到品種抗性持久化。
推行適期晚播,有效降低秋苗菌源數量
適期晚播即是在小麥播種適期範圍內盡量推遲播種,避免早播,是控製小麥條鏽病發生流行最經濟、youxiaodeduogongnengcuoshi。shijianzhengming,gaixiangjishujikedadajiangdiqiumiaojunyuanshuliang,congeryouxiaokongzhibinghaichuanbojiqichunjiliuxingchengdu,youjuyouhenhaodebaochanhezengchanxiaoguo,yijuduode,xingzhiyouxiao。
實行秋播藥劑拌種,控製條鏽病春季流行
在小麥條鏽病越夏和越冬關鍵地區,秋播時實施藥劑拌種(或包衣),yadiqiujijunliangheyuedongjunyuanjishu,jikeyouxiaokongzhidangdichunxiajitiaoxiubingdeliuxingweihai,youkedadajianshaoyuedongyuexiajunyuandexiangwaichuanbokuosan。shiyanyanjiubiaoming,yaojibanzhong(或包衣)麵積越大、越徹底,對病害的控製效果亦越好、越明顯。對於春季以外來菌源為主的條鏽病流行區(即非越冬區),則ze應ying結jie合he病bing害hai監jian測ce,在zai春chun季ji小xiao麥mai生sheng長chang期qi病bing情qing達da到dao防fang治zhi指zhi標biao時shi進jin行xing及ji時shi噴pen藥yao防fang治zhi。對dui於yu條tiao鏽xiu菌jun越yue夏xia易yi變bian區qu的de自zi生sheng麥mai苗miao,提ti倡chang深shen耕geng滅mie苗miao,結jie合he秋qiu季ji對dui靶ba噴pen藥yao防fang病bing,以yi控kong製zhi菌jun源yuan傳chuan播bo。有you效xiao的de藥yao劑ji品pin種zhong主zhu要yao有you粉fen鏽xiu寧ning、羥鏽寧特譜唑、敵力脫等,各地可根據藥源情況選用。
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