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首页> 外文期刊>日本作物學會紀事 >Analysis of Developmental Factors Determining Yield and Its Application to Yield Prediction and Culture Improvement of Lowland Rice. : XLV. Effects of temperature and its daily range in different growth-stages upon the growth, grain yield and its constitutional factors in rice plants.
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Analysis of Developmental Factors Determining Yield and Its Application to Yield Prediction and Culture Improvement of Lowland Rice. : XLV. Effects of temperature and its daily range in different growth-stages upon the growth, grain yield and its constitutional factors in rice plants.

机译：确定产量的发育因子分析及其应用于产量预测和培养改善低地稻。 ：XLV。温度及其日距在水稻植物生长，籽粒产量及其宪法因素中的不同生长阶段。

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Responses of the growth grain-yield and yield-constitutional factors to the temperature and its daily range were examined by subjecting rice-plants to different combinations of controlled day and night temperatures for 15 days in different growth stages. Optimum day and night temperatures for increasing the grain-yield and its constitutional factors and for advancing the date of heading were pointed out in different growth-stages, as shown in Table 1, while the optimum ranges of daily temperature could hardly be found. Some supplementary explanations are given as follows. (1) A high day temperature (36°C) and a low night temperature (16°C) are favourable for branching out of tillers, while a high day and night temperature (31°C) is suitable for development of tillers. Consequently, the day temperature of 31°C and the night temperature of 21°C have been found to be optimum for increasing the number of panicles. (2) A high day temperature is favourable for vigorous differentiation of spikelets and rachis branches, while the night temperature seems to have a much smaller effect on it than the day temperature. (3) A high day temperature (36°C) and a little low night temperature (21°C) are optimal for preventing the regeneration of spikelets and rachis branches. (4) Optimum day and night temperatures for ripening of grains are almost the same as those reported in the previous paper (Vol. XXV. No.4). (5) It is worthy of notice that a rather low night temperature in every stage of growth is necessary for favourable grain production, except the tillering stage and the late ripening stage. (6) It is also of great interest that the date of heading is clearly advanced by a low night temperature (16°C) at the tillering stage.
机译：通过对水稻和夜间温度的不同组合进行水稻和夜间温度的不同组合来检查对温度及其日常度的生长谷物产量和产量 - 致力的反应。在不同的生长阶段指出了增加粮食产量及其宪政和推进标题日期的最佳日间和夜间温度，如表1所示，而几乎无法找到日常温度的最佳范围。一些补充说明如下。 （1）高日温度（36°C）和低夜间温度（16°C）有利于分蘖分支，而夜间温度（31°C）适合于发育均衡器。因此，已经发现31℃和21℃的夜间温度的日温度是最佳的，用于增加圆锥数量。 （2）高日温度有利于尖刺和rachis分支的剧烈分化，而夜间温度似乎对其比白天温度要小得多。 （3）高日温度（36°C）和较低的低夜间温度（21°C）是最佳的，用于防止尖峰和rachis分支的再生。 （4）用于成熟的谷物的最佳日复度和夜间温度与前一篇论文中报告的那些几乎相同（XXV。No.4）。 （5）值得注意的是，除了分蘖期和晚期成熟阶段之外，每个增长阶段的每个阶段都需要一个相当低的夜间温度。 （6）对于在分蘖期的低夜间温度（16°C），标题的日期也是非常兴趣的。

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