米兰花掉叶子怎么办？留意米兰花根系枯死

植物图片 2019-05-16 14:05

米兰花种植在家里很容易叶子发黄掉叶子，造成米兰花掉叶子的原因有很多，我们应该仔细分析原因，再采取措施对米兰救治。

米兰刷啦啦掉叶子

米兰掉叶子的原因分析及解决办法

1、浇水：浇水过多造成根系无法呼吸，窒息烂根。水分无法传导到叶面上。表现出来的就是起初下部叶子卷曲，干枯，变成褐色脱落，进而造成上层绿色叶子短时间内也脱落。长时间缺水，造成根系枯死，此时再浇透水，会在短时间内大量落叶，植株死亡。浇水应严格按照“见干见湿”，不干不浇，浇则浇透。基本上是2天浇次透水。

2、施肥：米兰花对肥料有一定的要求，尤其是在生长期要有足够的肥料，如果肥料不足也会造成叶子也会变黄掉落。施肥应掌握薄肥勤施的原则，尤其是春天开始追肥时，忌施浓肥。追肥宜7～10天施一次，在肥水中亦应增加适量的过磷酸钙，有利米兰花的生长。

3、光照：米兰花喜光，通常是摆在明亮散射光下培养的，如果摆放的室内比较暗，会影响米兰花的生长，造成发黄掉叶子。米兰要摆在室内通风、有散射光的地方。每天可以见见晨光，中午太阳高照的时候搬进室内。太阳快落山时见见夕阳。这个过程可以持续半月左右，让米兰有个适应过程。

4、病虫害：受到真菌等病菌侵害引起的叶斑病，易使叶子局部坏死，出现黄色斑点或斑块，严重时整叶枯黄脱落，受到花叶病毒侵染后叶子上出现黄绿相嵌的斑驳；遭受介壳虫、红蜘蛛等为害。可每15～20天叶面喷洒一次25～30倍干燥纯净的草木灰与过磷酸钙混合浸出的澄清液，或0.1{bf}石灰水澄清液等进行无公害防治，以保护枝叶，防止各种病虫为害。

长势良好的米兰

注：如果出现浇水后大面积落叶，可以将米兰盆垫高，盆内表层土拨开，注意不要伤及根系。停水停肥，放置在通风处，早晚只在叶面喷水。加快盆内湿气蒸发，等米兰不再落叶后，可以逐步转为正常管理。

专题： 兰花 米兰 米兰花
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