文竹发黄怎么办

植物图片 2020-02-04 10:30

文竹叶子变黄了

主要原因：

①光照太强。文竹喜半阴，忌强光，特别是夏天要避开直射阳光，否则会造成枝叶枯黄。应将花盆移到阴凉处，经常向枝叶上喷水，以增加空气湿度。

②浇水不当。文竹喜湿润但怕涝，应保持盆土见干见湿，通常浇水使表土湿润即可。水多易烂根，水少易干尖，在干燥季节应多向叶面喷洒清水。

③施肥不当。如施追肥过浓或施人未腐熟肥料，均易引起“烧根”，造成叶子干枯、脱落。相反，如果盆土贫瘠，叶子也会由于缺少养分而发黄。

④冬管不善。文竹喜温暖，冬天宜向阳。冬天如果将其长期摆在见不到光线地方，通风不良或寒冷，均易引起叶子枯黄。通常要求室温不低于12℃，且摆在南窗附近，适度控制浇水。

⑤中毒。文竹怕烟尘，若遇到有毒气体，则枝叶易发黄。此外，植株过大，花盆太小或受到介壳虫等害虫危害，也会造成枝叶发黄，应及时换盆和防治。

专题： 文竹
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