红壤丘陵区双季稻表观光合量子效率的研究

Apparent quantum yield of photosynthesis of double cropping rice in red earth hilly region of China

摘要: 研究结果表明红壤丘陵区双季稻光-光合速率响应曲线符合非直角双曲线函数，水稻旗叶、倒2叶和倒3叶表观初始光能利用效率平均值(±标准差)分别为0.0536(±0.023)、0.0511(±0.023)和0．0488(±0.025)，即由旗叶向下递减；水稻光合作用最适温度为27～30 。

Abstract: The photosynthesis rate-light response curve of double cropping rice in the red earth hilly region is a non-rect-angular hyperbola function．The average values and standard deviations of the apparent initial quantum yield of flag leaf，second leaf and third leaf from the top are 0.0536±0.023，0.0511±0.023，0.0488±0.025，respectively．That is，they descend gradually from the flag leaf to the lower leaves．The optimal temperature of photosyn thesis of rice in this area iS from 27℃ tO 30℃ ．