How to do calcium deficiency in corn

1. Chemical treatment: For the calcium-deficient plots, the leaf surface can be sprayed with a concentration of 0.3%-0.5% calcium chloride solution, which can be sprayed 2-3 times, or other calcium-containing multi-element leaves can be sprayed. fat.
2, fertilization management: promote corn stalk returning technology, formula balanced fertilization, increase the application of soil fertilizers, control fertilizer application, especially nitrogen fertilizer application, appropriate increase of calcium phosphate and other phosphate fertilizer application, to prevent soil salinity The concentration is too high.
3. Irrigation management: During the vigorous growth period of corn from July to August, when there is high temperature and drought, it should be irrigated in time.