Does flower nitrogen deficiency plant show unripe symptom?

The nitrogen deficiency plant is thin, the branches are slender and hard, and the leaves and florets are small. The leaf color from the old leaf to the new leaf gradually changes from thick green to light, and then appears reddish purple, until the wilting yellow falls off, and in serious cases, the whole plant loses green. Prevention and treatment methods to increase the application of rotten human feces and urine, cake fertilizer, barnyard manure or ammonium sulfate, urea, ammonium nitrate and other fertilizers.