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作 者 ：闫川,丁艳锋,王强盛,李刚华,黄丕生,王绍华,凌启鸿

期 刊 ：生态学报 2008年 28卷 4期 页码：1573~1582

关键词：水稻；体温；气温；气体温差；

Keywords:rice, temperature of organs, air temperature, TD,

摘 要 ：以15个水稻品种为材料，测定了抽穗后水稻穗和叶的体温及冠层上部的气温，分析了穗和叶片的体温与气温的关系。结果表明：水稻穗和叶的体温始终低于气温，其气温与体温的差值（气体温差）受大气温度、湿度及水稻株型和器官成熟老化程度影响。在大气湿度相同的条件下，气温低时（﹤26.5℃），水稻穗和叶的气体温差较小；气温高时（﹥33℃），气体温差变大；在气温相似的条件下，大气湿度提高，穗和叶的气体温差变小。品种的株型不同，对水稻穗、叶的气体温差有一定程度的影响。在相同的气候条件下，直立穗型品种穗和叶的气体温差较弯曲穗型的大；“谷盖顶”型品种穗和叶的气体温差值较“草盖顶”型的大。水稻抽穗后，穗和叶的气体温差在不同生育时期有明显的差异，器官成熟老化程度越低，其气体温差越大。

Abstract:Panicle, leaf and air temperature above canopy of 15 rice varieties were measured to study the relationship between air temperature and the temperature of rice organs. The results showed that the temperature of panicle and leaf were lower than air temperature, the temperature difference between air and organ of rice (TD) was affected by air temperature, air humidity, plant type and age of organs of rice. Under conditions of similar air humidity, the TD was lower in the low air temperature (below 26.5℃) than in the high (above 33℃) air temperature. At the same air temperature, the TD decreased when the air humidity was high. The TD was also affected by the plant type of the varieties. Under similar climatic conditions, the TD of erect panicle varieties was higher than that of curved panicle varieties; The TD of the varieties whose panicle was higher than the flag leaf was higher than varieties whose flag leaf was higher than the panicle. After heading, there were significant differences between the TDs at different stages of rice growth, the more mature the organs, the higher the TD.

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