卷柏常见病虫害及其防治方法

植物图片 2021-03-24 09:14

卷柏在生长期间易受到叶斑病、炭疽病、介壳虫、褐软蚧等危害。为了卷柏的健康成长，快和小编一起来认识卷柏常见病虫害及其防治方法吧。

卷柏病害

叶斑病叶斑病多发于梅雨天气，一般湿度大的天气易发病，因为湿度大的天气易使病菌繁殖。刚发病时为褐色的小斑，叶斑的边缘呈现出水浸状褪绿，并且呈轮纹状向外扩展。后期病斑中心会出现黑褐色霉斑，潮湿条件下变成黑褐色霉层。叶斑病防治方法及时清除病叶，发病期间可用稀释100倍的多菌灵喷洒。炭疽病炭疽病起初发生在叶片上，严重时会蔓延到叶柄上。病斑初期呈水浸状的小黄斑，逐渐蔓延为轮纹状，后期病斑连成一片造成叶片干枯，并且会产生轮纹排列的小黑点。炭疽病防治方法加强养护，增施磷、钾肥增强植株抗性；发病初期可用稀释1000倍的等量式波尔多液或稀释1500倍的托布津溶液喷洒。

卷柏虫害

褐软蚧褐软蚧能危害很多种植物，在卷柏上多发。褐软蚧一般群集在叶面或嫩叶上，通过刺吸式口器吸食植株汁液，容易诱发煤污病，影响植株的光合作用，最终造成生长势弱，叶片枯黄。褐软蚧防治方法虫数不多的情况下，可以用毛笔或竹片等物将虫体刮除；在若虫孵化期可以用稀释100倍的乐果乳油或氧化乐果乳油喷洒。
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