【摘要】 作者通过试验观察到,在高温、强光条件下,光呼吸强度虽然也有升高,但升高的幅度是有限的,不足以形成光合午休。超饱和光强也不是形成光合午休的直接因素。同时,又一次论证了光合产物的累积在光合午休形成过程中的重要作用。 结合前两文(余彦波等,1985;唐鸿寿等,1986),作者提出了形成光合午休的主要途径(图2),指出了水分亏缺和光合产物在叶肉细胞内过量累积是形成光合午休的两个主要环节。并从生态学角度为缓解光合作用午休发展农业生产提出了意见。更多还原

【Abstract】 Under the conditions of high intensity of illumination and high temperature though the intensity of photorespiration Was higher, but its range was Limited, and the midnap of photosynthesis couldn’ t performed.Even under the oversatura-tion intensity of illumination it was not the direct factor of the formation of midnap of photosynthesis. Meanwhile it was indicated once more that the accumulation of photosyn-thate played an important role in the cause for the midnap of photosgnthesis.Combining with the former two papers(Yu Yanpo,1985; Tang Hungshou,1986) the authors advanced the main Way of the midnap formation of photosynthesis (Fig. 2) and defind that the water deficit and the restraint of photosynthate transport. And put forward for improving the structure of agroecosystem and developing intercropping and interplanting were the important measures to relief the mid-nap of photosynthesis and develop the agricultural production.更多还原