Can potassium dihydrogen phosphate water rice orchid?

Potassium dihydrogen phosphate can be used to water Milan flowers. Watering method: after the Milan flower enters the flowering stage, dissolve an appropriate amount of potassium dihydrogen phosphate in water until the fertilizer solution is mixed to a concentration of 0.3%, and then directly pour the fertilizer solution into the root of the plant or spray (once every 15 days) on the leaf surface.