不同生产类型甜柿冠层和光合特性分析

【作者】 王进； 欧毅； 唐晓华； 周贤文；

【机构】 重庆市果树研究所； 开县农业局；

【摘要】 以成年不同结果类型新次郎树为试材,进行树体的光合、光照研究。结果表明: ①丰产稳产树体树冠叶幕外层叶面积较低产树和变产树高11．6％～13．7％和13．5％～21．5％, 中层相差不大,内层较低。②树冠叶幕内、外层相对光照率3类树接近,但树冠叶幕中层差异较大,以丰产稳产树相对光照率最高,分别比变产树和低产树高44．1%和79．5％,差异极显著。③丰产稳产树外、中层叶片光合速率,在春叶老熟后及采果前、采果后3个时期均显著地高于低产树及小年期的变产树。更多还原

【Abstract】 The photosynthesis and illumination status were investigated in various yield -type sweet persimmon. The results showed that leaf area of outer leaf crown on high yield trees was 11. 6% to 13. 7% and 13. 5%to 21. 5% larger than that on low and fluctuating yield trees. Relative illumination rate of inside and outside leaf canopy was similar in the three type, but there was quitedifference in mid crown layer. The relative illumination rate of mid crown layer on high yield trees was 44.1% and 79. 5%, higher than that on low and fluctuating yield trees. The difference was extremely significant. Furthermore, photosynthetic rate of outside and mid leaf crown on high yield trees was significantly higher than that on low and off year fluctuating yield trees whether it was measured after spring leaves matured, before harvest or after harvest.更多还原