What is the reason for the rotten roots of a gentleman's orchid?

The rotten root of Cymbidium is a common disease. What is the reason for it?

First, the high temperature environment water is large, for a long time a lot of sprinkling water makes the root immersed in water for a long time, resulting in anoxia resulting in rotting root.

Second, fat and strong root burning, excessive concentration of water and fertilizer or excessive application of solid fertilizer, burn the root and cause root rot.

Third, do not change the basin soil for a long time, so that the soil is hardened and impervious, resulting in rotting roots.

Fourth, after a long period of drought, the roots dried up and sprinkled too much water, resulting in root decay.

Fifth, the use of raw soil, no mature leaves, fermentation in the basin to produce heat burn roots or soil selection of unsafe roots, no matter what the cause of rotting roots, it is necessary to adopt corresponding measures in time.

1. Get rid of rotten roots.

2. Clean the roots and wash them with potassium permanganate, disinfect and sterilize. Purple potion, charcoal ash, straw ash and other altered wounds can also be used to replace new soil to control sprinkler water, not to add fertilizer, and new roots can be sent out after half a month.