风信子花叶病症状及防治

植物图片 2021-05-19 16:53

风信子的叶片嫩绿，表面光滑，可以通过光合作用为植株提供养分。但是植株感染花叶病，叶片上会出现许多的斑点，降低了原本的美观度。本文为大家介绍风信子花叶病的防治办法！

风信子花叶病表现症状

发病初期，症状较轻，叶片光泽度下降，出现细小的斑点，逐渐形成褐色的条纹或斑块。严重时叶片整个黄化、扭曲，植株矮小，花期无花或花小，种球退化。

病原解析

花叶病的病原主要是花叶病毒，在68℃的高温下会发生变异。另外其他花的病毒如郁金香、水仙花、百合花病毒都会引起风信子的花叶病。

发病规律

在自然状态下病毒会侵染风信子。此种病毒为机械传播，枝叶接触到病菌就能感染，如果发生病虫害，如线虫、蚜虫均可传播。

防治方法

花叶病无法根治，只可预防，在养护中多费一份心，就能少操一点心。

①在种植前，要挑选无病植株的鳞茎进行栽种，栽种之前对种球进行消毒。

②种植前对土壤进行消毒，灌浇波尔多液溶液。

③及时杀灭虫害，消灭病原。

④一旦发现叶片上有小斑点，立即喷施药剂杀毒，及时清理掉病叶，以免交叉感染。

⑤栽种时不要与其他植物同盆，单独养护。家中植物较多的注意不要让风信子靠近郁金香、水仙、百合等植物，以免病菌互相传播患病。

专题： 风信子
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