文档介绍：石楠与红叶石楠的光合特性比较研究
园林专业贾春波
指导教师樊慧敏
中文摘要:在田间条件下采用英国PP Systems 公司制造的CIRAS-2 型便携式光合系统分析仪,对石楠、红叶石楠的光合特性进行测定。结果表明:在晴天条件下石楠、红叶石楠的光合速率日变化均为双峰曲线,并具有光合“午休”现象。石楠、红叶石楠的光饱和点分别约1 200~1 400 μmol·m-2·s-1,1 400~1 600 μmol·m-2·s-1; mol·m-2·s-1, μmol·m-2·s-1;,,说明石楠、红叶石楠属于喜光树种,且红叶石楠较耐荫,对光环境的适应性较强。
关键词:石楠;红叶石楠;光合特性
Comparative study on photosynthetic characteristics of Photinia serrulata and Photinia frasery Dress
Student majoring in Landscape Architecture Jiachunbo
Teachers Fanhuimin
Abstract:The photosynthetic characteristics of Photinia serrulata and Photinia frasery Dress were mea-
sured in the field conditions using CIRAS-2 portable photosynthetic system made by pany of UK PP Systems. The result showed that both Photinia serrulata and Photinia frasery Dress had a double-peak curve of diurnal variation of photosynthesis and a phenoenon of photosynthetic “noon breaking” in sunny days. Light saturation points of Photinia serrulata and Photinia frasery Dress were 1 200-1 400 μmol·m-2·s-1 and 1 400-1 600 μmol·m-2·s-1 respectively,pensation points of them were μmol·m-2·s-1 and μmol·m-2·s-1 respectively,and photosunthetic apparent quantum yield of them were and respectively. The experimental results showed that Photinia serrulata and Photinia frasery Dress belongs to light species,and the shade tolerance and light adaptab