文档介绍：石楠与红叶石楠的光和特性比较研究
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·s,1 400~1 600 μmol·m·s; mol·m·s, μmol·m·s;,,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。-2-1-2-1-2-1-2-1
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 t