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设计了三种温度和四种日长共12种光温互作处理对21个不同类型的水稻品种的反应特性作了研究。观察到早中稻品种在不同的光温互作下,生育期发生变化,但对光温感应的强度无明显影响。而晚稻品种则不仅生育期变化,而且感光性和感温性的强度亦发生显著变化,即随温度降低感光性增强,随日长加长,感温性增强。根据平均每生长一叶片需要的积温与光温关系的研究,发现两种基本类型,即长日低温生长节能型和短日高温生长节能型,早中稻多属前者,晚稻多属后者。并对其适应意义作了讨论。
The reaction characteristics of 21 different types of rice cultivars with 12 different light and temperature interactions were studied. It was observed that under the different light and temperature interactions, the varieties of early middle-aged rice changed their growth period, but had no obvious effect on the light-temperature induction intensity. However, the late rice varieties not only changed the growth period, but also had a significant change in the light sensitivity and temperature sensitivity, that is, the light sensitivity increased as the temperature decreased, and the longer the temperature was, the more the temperature sensitivity was enhanced. According to the research on the relationship between the accumulated temperature and light temperature, the average daily growth of one leaf, two basic types were found, that is, the long-term low-temperature growth energy-saving and short-day high temperature energy-saving growth. And its significance of adaptation was discussed.