一品红黄叶的原因和处理办法

植物图片 2021-02-24 16:20

引起一品红黄叶可能有五种原因。若是光照太强引起的，则需将其置于散光较足且通风的半阴处。若是浇水过多引起的，则需要将一品红放在通风良好的半阳处，晾干土壤中多余的水分。若是温度过低引起的，则需提高温度，将植株放在相对稳定的室内环境中养护。若是烂根引起的，则需要挖出根部，将烂根部分剪掉再重新栽种。

1.光照太强

原因：一品红是一种短日照植物。如果阳光过强、通风又不好时，容易因高温干燥，使一品红发黄掉叶子。

处理办法：需将其置于散光较足且通风良好的半阴处养护。阳光暴晒时，要进行适当的遮挡措施。地上要经常喷水，增加空气湿度。

2.浇水过多

原因：浇水过多，容易导致盆内积水。此时，一品红的根部就会缺少氧气，并且可能出现烂根，从而导致叶子发黄。

处理办法：则需要将一品红放在通风良好的阴凉处，给予充足的光照，晒干土壤中多余的水分，之后再恢复正常浇水。在养殖一品红的时候，需要合理控制浇水量，避免出现积水。另外遇到暴雨要及时排水，或在雨前将一品红移置室内。

3.温度过低

原因：一品红喜温暖气候，不耐寒。生长适温在15—20℃之间。入冬夜间需保持15℃以上，不能低于5℃，否则一品红叶子就会发黄脱落。在冬季开窗吹到冷风的话，也会导致一品红叶子发黄甚至掉落。

处理办法：需要提高温度，将植株放在相对稳定的室内环境中养护。进入十月中旬以后，最好要将其放在朝南向阳温暖的地方，保证其不会受冷风吹袭。

4.烂根

原因：盆内长期过湿的话，会使一品红根系腐烂，导致烂根，也会让叶子出现发黄的情况。

处理办法：如果出现烂根的话，需要将根部从盆中挖出，将腐烂的根部剪掉，然后进行消毒，以免病毒继续感染，之后再重新栽种养护。

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