Experts, what happened to the corn? What method is used to solve the problem that leaves are wrinkled all over the floor and do not jointing?

This is caused by calcium deficiency in corn, which belongs to physiological diseases. The typical symptoms of calcium deficiency in maize are white stripes on the leaf edge, jagged and irregular transverse cracks, and the top leaves are "bow"-shaped, and the leaves are stuck and cannot be stretched normally. Amino acid foliar fertilizer plus brassinolide plus calcium hydroxide or sugar alcohol calcium can be sprayed once every 7 days.