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Millet is a kind of forage crop and grain with small seed shape in Gramineae. Asia or Africa may have been cultivated more than 4000 years ago. Generally, the plant height is 0.3 to 1.3 meters (the height of pearl millet can be as high as 1.5 to 3 meters). Spikes or racemes, but also panicles. Except for pearl millet, the husk of the seed does not fall off after threshing, and it is often creamy white after peeling. Millet is an important food crop in many parts of Asia, Russia and West Africa. In the United States and western Europe, it was mainly used as pasture or hay, but it was also used as the main grain in medieval Europe. There are many kinds of millet, such as pearl millet (which is a common grain in India and Africa and is suitable for poor dry soil), broom millet (which is used as feed in the United States and eaten in Asia and Eastern Europe), millet (also known as millet or millet, which is planted as hay in North America and western Europe and is an important food crop in China and other Asian countries), refers to millet (an important food crop in South Asia and parts of Africa) and Japanese millet (planted in Japan and Japan). Millet has high carbohydrate content, protein content is about 6% to 1 1%, and fat is about 1.5% to 5%. Millet has a strong flavor and cannot be used to make puffed bread. It is mainly used for dry buns and porridge or rice. The annual output of the world is about 3,000 tons, and the main producers are Indian, China, Nigerian and Russian.