美国本土48个州的耕地约为19.5亿亩,相当于日本耕地的24倍。主要作物是小麦、玉米、大豆和饲料作物等。水稻种植面积为玉米和小麦的4％,而糙米产量只有玉米的3.2％,小麦的8％。从世界稻米生产情况看,美国水稻种植面积列在第十一位,产量为第十位,而出口量为180万吨,居世界第一位,占世界稻米流通总量的24.3％。水稻与小麦并列为世界两大重要粮食作物,但水稻的贸易量极少,几乎是自给性生产。而美国却与其他国家不同,以其稻米 The cultivated land of the 48 U.S. states amounts to about 1.95 billion mu, equivalent to 24 times of Japan’s cultivated land. The main crops are wheat, corn, soybeans and forage crops. The area planted with rice is 4% of that of corn and wheat, whereas brown rice yields only 3.2% of maize and 8% of wheat. From the perspective of rice production in the world, the area under rice cultivation in the United States ranks 11th with a production volume of tenth and exports of 1.8 million tons, ranking the first in the world, accounting for 24.3% of the total rice circulation in the world. Rice and wheat rank as two major food crops in the world. However, the trade volume of rice is extremely small and almost self-sufficient. The United States, however, is different from other countries for its rice