Miscellaneous grains usually refer to grain and bean crops other than rice, wheat, corn, soybeans and potatoes. Mainly include: sorghum, millet, buckwheat (sweet buckwheat, bitter buckwheat), oat (naked oats), barley, broomcorn millet, broomcorn millet, coix seed, grain amaranth, kidney bean, mung bean, adzuki bean (adzuki bean, red bean), broad bean, pea, cowpea and lentil. It is characterized by short growth period, small planting area, special planting area, low yield and generally rich in nutrients.