What are the fertilizer precautions? A full analysis of key points for scientific fertilization

1. When new shoots have just grown, the demand for nitrogen fertilizer is relatively high, but it must be combined with potassium fertilizer. 2. When the pseudobulbs mature, the amount of potassium fertilizer should be gradually increased. 3. When flower buds form, phosphorus fertilizer should be increased to promote flower bud development. 4. Weak plants and newly planted orchid plants should temporarily not be fertilized. 5. In addition to the three major elements (nitrogen, phosphorus, potassium), fertilizers must also be used in combination with trace elements. 6. Organic fertilizers are suitable for terrestrial orchids, and are used less for epiphytic orchids. 7.OrchidsDuring the dormant period, the ability to absorb fertilizer almost stops, so there is no need to fertilize. 8. When using barkcultivationorchids, use fertilizer with a relatively high nitrogen ratio. 9. In spring and autumn, fertilizing in the morning is best; in summer, fertilizing in the evening is best. 10. When winter temperatures are low or a cold wave strikes, avoid fertilizing. 11.Orchidsare easily able to absorb fertilizer at 22-28 degrees Celsius. Xue Congxian