Maize

Figure14. Untreated seedlings.

1. Grains (yield, color, internal quality (nutritional components))

Treatment: Two treatments were set up in the experiment, namely CK (urea 2g/L), HA1 (1g/L), and HA1.5 (1.5g/L). Three batches of corn seedlings with similar basic conditions were selected, and fertilization was applied once a week, while other operations followed standard procedures.

Figure15. Growth of maize grains under different treatments.

Result: Compared to the control, treatment with 1.5 g/L humic acid can significantly promote the growth and thickening of corn ears and increase the number of grains, thereby enhancing yield.