What aspects should be paid attention to in fertilizing orchids?

Orchids should be very careful in fertilizing so as not to damage the roots. Fertilizing too often, too thick or using too much base fertilizer will cause the accumulation of toxic salts, damage the roots of orchids and cause death. Would rather use less or no base fertilizer, more dilution times and more frequent fertilization times. This is in line with China's old experience: diligence but light, abstinence and thick. For example, cow dung fermented for 3 months can be diluted to light brown, clarified and dregs removed, while fertilizers are generally diluted to 1/1000 to 1/10000. Diluted liquid fertilizer is best sprayed on the leaf with a fine sprinkler.