Rice is native to tropical Asia. After being widely planted in China, it gradually spread all over the world. According to different methods, rice can be divided into indica rice and japonica rice, early rice and mid-late rice, glutinous rice and non-glutinous rice. Yuan Longping, a scientist in China, has made great contributions to the research of hybrid rice and is known as the "father of hybrid rice". Rice grains produced by rice are called rice or rice after hulling. Nearly half of the world's population lives on rice. There are many ways to eat rice, such as rice, rice porridge, rice cakes, rice cakes and rice noodles. Besides being edible, rice can also be used as an industrial raw material for brewing wine and sugar, and rice husk and straw also have many uses.

Millet: scientific name: Setaria italica alias: Millet, Millet: Gramineae, Setaria viridis Distribution: China, Japan, Europe, Arabia, India, Pakistan, Korea, France, Egypt Morphological characteristics: monocotyledonous plant, plant height 60 ~120cm; The stem is thin and straight, and the stem is millet.

Common poles are white and red, hollow and jointed; Leaves narrowly lanceolate, parallel veins; Spike terminal, raceme, pendulous; There are hundreds to thousands of seeds per ear, and the seeds are very small, with a diameter of about 0. 1cm. Ears of grain are generally golden when they are ripe, and they are commonly called millet after peeling. Ecological habit: like high temperature, the suitable temperature for growth is 22 ~ 30 degrees, and it is suitable for cultivation below the altitude of 1000 meters, belonging to drought-tolerant and stable crops. Originally from China, it is widely planted in northern China.