【摘要】 <正> 一.引言水稻是我国的一种主要粮食作物。研究水稻阶段发育的规律,不论在实践上及理论上,都有很大的意义。苏联及其他国家在这方面有过研究,但对水稻春化阶段要求的温度条件以及在适宜温度条件下延续的时间未有统一的意见:有的认为水稻春化阶段要求高温(15—35℃),有的认为要求低温(3—8℃)有的认为水稻春化更多还原

【Abstract】 From 1953 to 1954 a series of experiments has been carried out at Nanking on the vernalization of 59 varieties of rice collected from various parts of China. The results of these experiments may be summarised as follows: Different varieties, from early to late varieties, require different temperatures for the vernalization of rice. In general, all the varieties used gave favorable response to high temperatures (15—30℃). Among the 59 varieties, 8 of them require a temperature of 25—30℃, and 13 of them 15-20℃. For the majority of the varieties tested 12 days are usually sufficient; For the completion of vernalization, but 11 varietiesrequire more than 6 days and 10 varieties less than 6 days to complete this stage of development.更多还原