When is the filling period of corn?

The filling period of corn is usually around July.

The filling period of maize refers to the formation period of maize seeds, at which time sufficient nutrients and water are needed. Generally, corn will enter the filling stage around July. When corn enters the filling stage, the weather with high temperature and little rain is beneficial to corn filling, but it is easy to cause drought in the field and affect corn filling.

The embryo differentiation of maize was basically completed at the grain filling stage and began to germinate. The grain volume increased rapidly, and it was basically completed (up to 75%). The dry matter accumulation was only 65,438+00%, and the water content ranged from 80% to 90%, so it was in the stage of water growth. Endosperm from clear pulp to self-pulp. The length and thickness of the trunnion are basically fixed. It is the main period to determine the number of grains.

Matters needing attention in maize planting

Regardless of machine sowing or hand sowing, the sowing depth of corn is required to be 3 to 5 cm. If topping is planned, the sowing depth can be 3 cm. Sowing too deep will lead to slow emergence and weak seedlings. Too much watering will lead to poor seedling emergence, leading to lack of seedlings. When corn is sown, a proper amount of phosphorus and potassium fertilizer can be used as seed fertilizer, which can significantly enhance the growth at seedling stage and thus increase the yield.

After sowing, cover your head with water in time. If too much fertilizer is sown and not watered in time, it is easy to cause fertilizer to burn seeds and cause serious seedling shortage. Appropriate amount of water, not too much. Flood irrigation is easy to form water accumulation in the field, which will lead to slow emergence, yellow seedlings and even serious shortage of seedlings. Especially for deep-sown plots, the amount of watering should be controlled.