五十年代至六十年代,日本的大麦种植面积为90万公顷,其中六棱大麦约30万公顷,分布在关东、东山、东海和东北地区;裸大麦(元麦)约50万公顷,除分布在九州州、四国外,中国、近畿及东海地区也有种植;二棱大麦面积仅有10万公顷,主要分布在关东地区。六十年代以后,大麦面积激剧减少,到目前为止仅有11.4万公顷,其中二棱大麦达到7.8万公顷,关东(枥木、茨城)和九州(佐贺、福冈)是主要产区,在中国、四国以及北海道也有少量种植;六棱大麦2.4万公顷,分布于东北(山形、宫城、 From the 1950s to the 1960s, Japan planted 900,000 hectares of barley, of which about 600,000 were planted with hexagonal barley in the areas of Kanto, Dongshan, East China Sea and Northeast China. About 500,000 hectares of naked barley It is also distributed in Kyushu Prefecture, Shikoku, China, Kinki and the East China Sea. The two-rowed barley has an area of ​​only 100,000 hectares and is mainly distributed in the Kanto region. Since the 1960s, there has been a dramatic reduction in the area of ​​barley, with only 114,000 hectares so far, including 78,000 hectares of barley, and Kanto (Tochigi, Ibaraki) and Kyushu (Saga, Fukuoka) China, the four countries and Hokkaido also have a small amount of planting; hexagonal barley 24,000 hectares, located in the northeast (Yamagata, Miyagi,