What are the classification of corn and what are the spring, summer and autumn corn?

Corn is an annual grass herb, and it is the world's highest-yielding food crop, commonly known as sticks and glutinous rice.

According to corn morphology, structure of endosperm and presence or absence of glume, it is divided into: hard grain type, horse tooth shape, half dention type, silty type, sweet type, sweet powder type, wax type, burst type, and Based on the grain color and graininess of corn, it is divided into five types: yellow corn, white corn, black corn, Waxy Corn and mixed corn; and classified by quality: regular corn, Sweet Corn, waxy corn, high oil corn and purple corn; According to the length of growth period, it can be divided into early, middle and late maturity types; according to the composition of the grain and special purposes, it is divided into special corn and common corn; according to the seeding season, it is divided into spring corn, summer corn and autumn corn.

Spring corn (early farmers call it early corn) - The corn planted in April is called spring corn and harvested in autumn (presumably in September). It is distributed in the northeast, northwest, northern North China, and southwestern hilly regions.

Summer Maize - Corn grown in late May to mid-June is called summer corn and harvested in autumn (about October), which is slightly later than the harvest of spring corn.

Autumn corn - sown from late July to early August (corn sown before and after the beginning of autumn), distributed in eastern Zhejiang, south-central Guangxi, and southern Yunnan.