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当前位置: 首页 > 文章 > 小叶榕秋季光合特性研究 宁夏农林科技 2013,54 (11) 34-37
Position: Home > Articles > The Photosynthetic Characteristics of Ficus Microcarpa L.F. in Autumn JOURNAL OF NINGXIA AGRICULTURE AND FORESTRY SCIENCE AND TECHNOLOGY 2013,54 (11) 34-37

小叶榕秋季光合特性研究

作  者：
程林
单  位：
江苏省句容中等专业学校
关键词：
小叶榕;光合速率;光饱和点
摘  要：
采用Li-6400型便携式光合作用测定系统测定了小叶榕叶片的光合特性。结果表明:小叶榕的净光合速率日变化呈双峰曲线,存在光合"午休"现象。第一峰值均出现在10:00左右,第二峰值均出现在15:00左右。日最大净光合速率为4.72μmol/(m2·s)。净光合速率与蒸腾速率呈正相关,与胞间CO2浓度、气孔导度呈负相关。光饱和点为1 350μmol/(m2·s),光补偿点为85μmol/(m2·s),小叶榕具有一定的耐阴能力,是不耐强光的植物。
译  名：
The Photosynthetic Characteristics of Ficus Microcarpa L.F. in Autumn
作  者：
CHENG Lin;Jurong Secondary Specialized Schools in Jiangsu Province;
关键词：
Ficus Microcarpa L.F.;;Photosynthetic rate;;Light saturation point
摘  要：
The photosynthetic character study of leaves in perennial evergreen arbor Ficus Microcarpa L.F. was determined with the Li-6400 Photosynthetic system.The results showed that the curve of daily of Ficus Microcarpa L.F. net photosynthetic rate was a double-peak curve and there was a clear depression at noon.Its first peak occurred at 10:00a.m, the second one at 15:00p.m. The maximum of photosynthetic rate was 4.72 μmol/(m2·s). Correlation analysis showed that there was positive relation between photosynthetic rate and transpiration rate. There was a negative relation between stomatal conductance and internal CO2 concentration. The light compensation was 85 μmol/(m2·s),its light saturation point was 1 350 μmol/(m2·s). The light compensation and saturation point indicated that Ficus Microcarpa L.F. was a litter shade-resistant plant and it could not bear the glare.

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