How big is the impact of fertilizer on orchid growth?

The impact of nutrient elements in fertilizer onorchidgrowth (1) Nitrogen Nitrogen is a component of plant proteins, chlorophyll, and enzymes; plant vitamins, hormones, alkaloids, etc. also contain nitrogen. When nitrogen supply is sufficient, orchids have lush branches and leaves, dark green leaf color, and robust growth. When nitrogen is insufficient, it causes stunted plants, with the lower leaves first losing green and turning yellow, then gradually spreading to the upper leaves, thin and small leaves, and slow growth. When nitrogen is excessive, it causes excessive vegetative growth, easy lodging, and easy infection withpests and diseases. (2) Phosphorus Phosphorus is a component of plant cell nuclei and enzymes, can promote cell division, promote root system development, advance flowering, and enhance theorchid'sdrought and cold resistance. When phosphorus is insufficient, starting from the old leaves, the plant takes on a dark green color, the stems and leaves have a purplish-red tinge, afterward the leaves yellow and easily fall off, the root system develops poorly, and the seed-setting rate is low. (3) Potassium Potassium mainly participates in and plays a regulatory role in plant internal metabolism, can promote the formation of chlorophyll and photosynthesis, makingflowersgrow robustly, with tough stems, not easy to lodge, and enhanced disease resistance and cold tolerance. When potassium is deficient, the old leaves show yellow, brown, or purple spots, the leaf tips scorch and curl downward, and the leaves turn yellow from the edges toward the center, but the leaf veins remain green.