Corn generally refers to corn, an annual grass crop of Gramineae, which belongs to a root crop, and the underground node root is the main root system, which is deeply buried; The stem is composed of nodes and internodes, cylindrical, with hard tissue; Corn leaves are composed of leaves and leaf sheaths; Inflorescence monoecious; Seeds are usually yellow, white and purple. Corn blooms in July-August, and bears fruit in August-65438+10. In Ming Dynasty, Li Shizhen recorded in "Compendium of Materia Medica Gu Er Su": "Su is called jade sorghum", so Su is also called jade sorghum.
Corn originated in the central or southern Mexican plateau and was introduced to China in the16th century. It is the most common or synonym and one of the most widely distributed crops in the world. Corn is mainly concentrated in the central United States, China Plain and Southern Europe Plain. Corn has low requirements on soil and can grow on sandy soil, loam soil and clay. Corn likes temperature, light and humidity. Under the conditions of high temperature, high humidity and strong light, products accumulate quickly, and offspring can only be obtained through sexual reproduction.
Corn can be boiled, fried into popcorn and ground into cakes, cakes and spoons, which is one of the staple foods in some parts of China. Corn seeds are rich in nutrition, mainly used for eating and feeding, and can also be used to make high-quality edible oil and corn starch, which can be made into beer after deep processing; Bracts of ear can be used to weave daily crafts. Corn stigma, commonly known as corn stigma, has certain medicinal value. Corn silk was first seen in "Herbal Medicine in South Yunnan" edited by Mao Lan in Ming Dynasty. It can be used as medicine and has the effects of diuresis, detumescence, clearing liver and benefiting gallbladder.