如何防治“沙漠守护神”胡杨叶锈病

 “我赞美它 并不是因为它生命的昭示 我赞美它 并不是因为它死亡的壮烈 我赞美它 并不是因为它永垂不朽 安于贫瘠的胡......”胡杨，秋天最美的树，是一亿三千万年前遗留下的最古老树种，只生在沙漠。它耐寒、耐旱、耐盐碱、抗风沙，有很强的生命力。“胡杨生而千年不死，死而千年不倒，倒而千年不烂”。胡杨是生长在沙漠的唯一乔木树种，且十分珍贵，可以和有“植物活化石”之称的银杏树相媲美。

 

yexiubingweihuyangchangjianbinghaizhiyi。bingyuanjunweifenbeizhaxiujunmelampsora ;pruinosae tranz.  xiabaozidui0.5～1 mm，xiabaozijuhuangse，luanyuanxinghuotuoyuanxing，danbao，bihou，biaomianmishengxiaoyou，21～28×18～21 μm，mengyahoukeshenchu1～4geyaguan。cesiwuse，dingduanpengdachengtouzhuanghuoduanbangzhuang，wuse，zhang45～65 μm，dingduankuan15～21 μm，bihou1.5～4 μm。。dongbaozidui0.2～1 mm，dongbaozihuanghese，lengzhuzhuang，42～60×6～12 μm。  

 

　　fabingguilv   

yijunsitihuoweichengshudexiabaoziduizaiya、nenshaojiyoujingshangyuedong。yinian4yueshangxundangqiwenshangshengdao12 ℃shi，huyangkaishimengya，jichuxianyuedongbingzhu。pingjunqiwen18 ℃shi，kaishifabing；25 ℃shidaliangfabingliuxing。zai7、8、9sangeyuezhong，yinmiaomushengzhangliangda，zhitiaomiji，qihoushire，youliyuxiubingliuxing，fabingchangdagaofeng。

 

　　症状

chuqijizhuyepianshangchuxiandanhuangxiaodian，jianzengda，yansejiashen，houtupobiaopi，luchuchenghuangsexiabaozidui；fabingyanzhongshixiabaoziduilianchengpian，yepiankusi。houqizaixiabaoziduizhouweixingchenglazhi、hehuanghuohongzongsetuqidepianceng，jidongbaozidui，xingzhuangbuguizehuochengduojiaoxing，duolianchengpian，daxiaobudeng。xia、dongbaoziduijunshengyuyeliangmian，yebeimianjiaoduo。

 

　　分布及危害

fenbuyuxinjiang、gansu、ningxia、neimenggu、shanxi。zaitianranlinherengonglinzhongfashengpubian，shiyoumiaoheyoulindezhuyaobinghai。weihaihuyanghehuiyang，weihaiqizhangda6geyue。fabingzhulvgaoshikeda100%，bingqingzhishuda97.2，simiaolvgaoda71.1%。 

 

　　防治方法

　　1． xiaomieyuedongjunyuan。xuanzemiaopudiyujiumiaopugeli1 000 mzuoyou，yijianshaojunyuanchuanbohemanyan。ershigenjudiyinianbutongbozhongqijimiaomuzhangshi，zai8yueshangxunzhi9yuexiaxunpen1～2ci1：300beifenxiuning，kejiangdibingjunyuedonglv。sanshizaidiernian4yueshangxunzhi5yueshangxun，jiehejianmiaobachubingzhu，huozhaichubingya、bingye，jizhongkengmaihuoshaohui。 

　　2． kongzhiguangai，zhonggengbaoshang  

　　3． helimizhi，shidangshuzhi  

　　4． qingchuzacao，helishifei  

　　5． xuanyukangxiubingxinpinzhong  

　　6． huaxuefangzhi 25%qiangxiuning、15%（huo25%）fenxiuningweigaoxiaoneixiji，fangzhixiaoguokeda85%～90%。5yueshangzhongxun，diyicipenyao，kongzhitianjianchufabingyuan。junyunpensayepianzhengfanmian。quannianpen3～4ci。qicishi1：200beiweixiuning、1：50beidixiuna、1：300beiduojunlingyeyouyidingxiaoguo。