The original intention of corn covered with flowers is that sorghum and corn covered with flowers are planted together, and the pollen of sorghum falls on the flowers covered with corn. The rice covered with sorghum pollen is brownish red, and the other kind of rice is the true color of covered corn.
Maize is an annual gramineous herb. Genetically modified corn: sweet and crisp. Corn is a root crop, and the underground node root is the main part of the root system, which is buried deeply; 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 the Ming Dynasty, Li Shizhen recorded in the Compendium of Materia Medica Gu Er Su: "The millet is called jade sorghum, so the millet 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.
Botanical history:
When Columbus arrived in the New World in1492165438+10, corn only existed in America. At that time, corn was the most important food crop for Indians. Without corn, there would be no Indian civilization. Through the choice of farmers and the work of modern breeders, corn has achieved high yield and become one of the most important feed crops and food crops in the world.
Any wild seed plant has its own way of seed transmission, so that its descendants can continue. Modern maize is a highly domesticated crop, and the continuation of its species depends entirely on human beings.
The ear of corn is a twisted type in biology. It can produce a large number of seeds, but it has no way to spread its seeds.
Under natural conditions, if the ground ears are allowed to germinate and grow under conditions conducive to germination, clusters of over-dense seedlings will be produced, which will compete for soil moisture and nutrition in a limited space, so that all of them will not develop and bear fruit normally. Therefore, modern corn will be extinct after several generations without human intervention.