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凤仙花常见病害及防治方法

   2014-11-07 542
核心提示:凤仙花的花型小巧玲珑,花色娇俏艳丽,而且其花头、翅、尾、足俱翘然如凤状,故又名金凤花。凤仙花的生命力旺盛,适应性强,但凤仙花常受到白粉病、褐斑病、立枯病这三种病害的威胁,下面为你介绍凤仙花这三种常见病害的防治方法。

fengxianhuadehuaxingxiaoqiaolinglong,huasejiaoqiaoyanli,erqieqihuatou、chi、wei、zujuqiaoranrufengzhuang,guyoumingjinfenghua。fengxianhuadeshengmingliwangsheng,shiyingxingqiang,danfengxianhuachangshoudaobaifenbing、hebanbing、likubingzheisanzhongbinghaideweixie,xiamianweinijieshaofengxianhuazheisanzhongchangjianbinghaidefangzhifangfa。

 

凤仙花白粉病:凤仙花的白粉病主要发生在叶片和嫩梢上。一般在6月开始发生,7月份以后叶面布满白色粉层。随后,在白粉层中形成黄色小粒点,颜色逐渐变深,最后呈黑褐色。  

防治方法:

1、yaofangzhifengxianhuadebaifenbing,zhuyaoyaojiaqiangtongfeng,zaizhishi,zhuyikongzhizhizhudemidu,jiaqiangfeishuiguanli,zengqiangzhizhudekangbingli。

2、baifenbingdebingjunzaibingzhucantihezhongzineiyuedong,yinian,huanjingshiyishi,bingjunkejiefengyuchuanbo。suoyiyaojiangbingye、bingzhuqingchu,jizhongxiaohui,jianshaochuanranyuan。  

3、8~9月为本病的盛发期,在发病期间用15%粉锈宁可湿性粉剂1000~1200倍液,或70%甲基托布津可湿性粉剂1000倍液防治。在32℃以上的高温下避免喷药,以免发生药害。

 

fengxianhuahebanbing:fengxianhuahebanbingyouchengfengxianhuayebanbing,binghaizhuyaofashengzaiyepianshang。yemianbingbanchuweiqianhuanghesexiaodian,houkuozhanchengyuanxinghuotuoyuanxing,yihouzhongyangbianchengdanhese,bianyuanhese,juyoubumingxiandelunwen。yanzhonghuanbingdeyepianshang,bingbanlianpian,daozhiyepianbiandekuhuang,zhizhizhizhusiwang。  

防治方法:

1、fengxianhuaxifeiwodeshazhirangtu,bunailao。yinci,zhongzhiyishazhirangtuweiyi,yilipaishui。

2、penzaifengxianhua,yuhouyingjishidaopen。qiumoyingjiangbingye、bingzhujizhongxiaohui,jianshaolainianchuanranyuan。  

3、发病初期用25%多菌灵可湿性粉剂300~600倍液,或50%甲基托布津100倍液,或75%百菌清1000倍液防治。

 

fengxianhualikubing:fengxianhuadelikubingzhuyaoweihaideshigenjingbu,bingjunqinrangenjingbu,zhibingbubianheihuoyisuo,chaoshishiqishangshengbaisemeizhuangwu,zhizhuranbinghou,shutianneijijianyeweinian、ganku,jierzaochengzhengzhusiwang。  

防治方法:

在发病初期拔除病株后喷洒75%百菌清可湿性粉剂600倍液,或60%多·福可湿性粉剂500倍液、20%甲基立枯磷乳油1200倍液。

 
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