水稻是一种世界性的重要粮食作物,遍布五大洲一百一十一个国家。本文侧重收集IREI、日本、印度和美国等国家水稻遗传育种研究的有关材料,仅供参考。一、国外稻作生产现状与育种目标据1978-1980三年平均,全世界水稻种植面积为1.44亿公顷,稻谷总产3.86亿吨,每公顷平均单产2.7吨(360斤/亩),最高6.8吨(906.6斤/亩,南朝鲜),最低0.4吨(53.3斤/亩)。1976-1978年三年平均,在全世界111个产稻国中,以每公顷平均单 Rice is a world-wide important food crop in 111 countries on five continents. This article focuses on the collection of IREI, Japan, India and the United States and other countries related to rice genetic breeding research materials, for reference purposes only. I. Status of Foreign Rice Production and Breeding Targets According to the three-year average of 1978-1980, the world’s paddy planting area is 144 million hectares and the total output of paddy is 386 million tons. The average yield per hectare is 2.7 tons (360 kg / mu) and the highest is 6.8 Ton (906.6 kg / mu, South Korea), the lowest 0.4 tons (53.3 kg / mu). Three-year average from 1976 to 1978, average per hectare out of 111 rice-producing countries in the world