中华红叶杨生物学及光合特性的研究

Study on the Biological and Photosynthetic Characteristics of Populus×euramericana cv.Zhonghuahongye

通过对中华红叶杨的叶色、物候、繁殖以及光合特性5年的研究结果表明:中华红叶杨与2025杨具有类同的形态特征和物候期,中华红叶杨在不同的季节叶片呈现不同的红色,并且季相变化明显,表现稳定;嫁接繁殖以2025杨作为砧木成活率最高,生长量最大;中华红叶杨和2025杨的光合作用、蒸腾速率和气孔导度日变化均呈单峰曲线,且同步波动;2025杨的叶面积明显大于中华红叶杨的。

The 5-year researches on the leaf color, phenological phenomenon, propagation and photosynthetic characteristic of Populus × euramericana cv. Zhonghuahongye showed that Populus × euramericana cv. Zhonghuahongye has the same morphological character and phenological period as Populus × euramericana cv. Yang 2025 ; the leaves of Zhonghuahongye assume various reds in different seasons, and its seasonal aspect changes evidently and steadily; the propagation by grafting has the highest survival rate and the most growth increment by using Yang 2025 as a tree stock; all the daily changes of photosynthetic rate, transpiration rate and stomatal conductance of both Zhonghuahongye and Yang 2025 assume a single-peak curve and synchronous fluctuation; the leaf area of Zhonghuahongye is obviously smaller than that of Yang 2025.