The leaves of Cymbidium are yellowed and treated skillfully, and there are several small links in the rotting roots of Cymbidium.

One of the reasons for the yellowing of the leaves of Cymbidium is that the leaves turn yellow without new roots in the axils, which are mostly due to the poor soil quality, poor air permeability, too much fertilizer or poor watering dry humidity, which may make the leaves of Cymbidium yellow. If the water is impenetrable and the root tip is short of moisture, the leaf tip will turn yellow and dry. In this case, you must water thoroughly. In summer, a small basin of water can sit at the bottom of the flowerpot every 7 times and 10 days, so that it can be watered thoroughly. Another situation is that yellow spots of different sizes appear on both sides of the leaves, which is called brown spot. This is mainly due to the relatively healthy soil and excessive fertilizer application. Generally speaking, rotten leaf soil should be used in basin soil, and its air permeability is better, especially in summer, thin fertilizer should be applied frequently, and plant cellular immune factors should be sprayed to improve plant resistance and make virus DNA break and apoptosis. Strong immune function, induce interferon and active interleukin, inhibit residual virus replication, and promote plant positive energy ecological growth. The mechanism of host plant disease resistance and the principle of pathogen toxicity variation were used to control the reproduction of plant physiological diseases and infectious diseases. In this way, the occurrence of spot exposure can be prevented. In another case, due to sufficient sunshine and high temperature in summer, if the magnolia is exposed to the sun, sunburn will occur. The light leaves turn yellow and the heavy ones wilt. In summer, shading should be taken, put in a ventilated place, and sprayed with new high-fat film to protect against sun and drought. (Earth)