What effect does nitrogen fertilizer have on watermelon growth?

(Agricultural Wealth Network) Nitrogen is the main component of chlorophyll. Increasing nitrogen fertilizer application can raise the chlorophyll content in watermelon leaves, accelerate the growth of stems and leaves, improve the plant's photosynthetic capacity, and help the fruit expand and improve quality. Within a reasonable nitrogen application range, watermelon yield increases as the amount of nitrogen fertilizer increases. When the plant is deficient in nitrogen, it shows slow growth, a smaller individual size, and yellowing leaves. However, excessive nitrogen fertilizer causes excessive vegetative growth, makes fruit setting difficult, delays the fruit ripening period, and lowers the sugar content.