一.引言水稻是一種高產作物,在我國分佈很廣,其種植面積目前佔我国糧食作物種植面積的23％以上,其產量佔全國糧食作物產量41％多。今年1月23日我們黨中央提出的1956—1967年全國農業發展綱要(草案)指出,在今後十二年內,要求增加稻谷種植面積,發展和擴大高產作物的生產。這個指標表明水稻在我國糧食生產上佔有何等重要的地位。在我國南部,長江流域以及華北、華東沿海地區,對擴大水稻種植面積提供了有利的自然地理條件。 顯然,水稻生理特性的研究從而為其農業技術措施提供理論的基礎,對解决我國目前生產 I. Introduction Rice is a high-yield crop widely distributed in China. Its planting area currently accounts for more than 23% of the acreage of China’s grain crops. Its output accounts for 41% of the national grain crop. On January 23 this year, the draft Outline for National Agricultural Development 1956-1967 proposed by our Party Central Committee pointed out that in the next 12 years, it is required to increase the area under rice cultivation and to develop and expand the production of high-yield crops. This indicator shows how important rice occupies the grain production in our country. In southern China, the Yangtze River valley and the coastal areas of North China and East China, it has provided favorable natural and geographical conditions for expanding the rice acreage. Obviously, the study of physiological characteristics of rice will provide a theoretical basis for its agricultural technology measures,