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兰花在其一生中会遭遇很多麻烦,并出现各种症状。只要能认识这些症状,那麻烦也就迎刃而解了。一、兰叶发黄老株上或是较老的叶片很慢地变黄,那是正常的自然老化现象。但如果发生在新叶上,就不那么简单了:1.缺少氮肥(合理施用氮肥,能促进植株生长,叶色浓绿)。2.根部受损太大,导致新叶慢性发黄。3.受寒风、冷霜冻伤。4.日晒太多或太强。二、根部败损根部败损是最常发生且最麻烦的情况,一般由下列原因引起:
Orchids will encounter a lot of trouble during their lifetime, and a variety of symptoms. As long as you can recognize these symptoms, the troubles will be solved. First, the yellow leaves of old yellow leaves or older leaves are slowly turning yellow, it is normal natural aging phenomenon. However, if it occurs on a new leaf, it is not that simple: 1. The lack of nitrogen fertilizer (rational use of nitrogen fertilizer can promote plant growth, dark green leaf color). 2 root damage is too large, resulting in chronic yellow new leaves. 3. By the cold, cold frostbite. 4. Too much or too much sun. Second, the root of the loss of the root is the most common and most troublesome situation, usually caused by the following reasons: