摘要
以铁皮石斛幼苗为试材,研究了在不同温度和湿度条件下光照强度对其光合速率日变化的影响。结果表明:在低温、低湿环境下,光照强度的变化对净光合速率的影响不是特别明显;在低温、高湿下,光合速率值随光照强度增加而增加;在高温、低湿下,光照强度越低其光合速率值反而越高,光照强度最强时其净光合速率值达到最低;当温度为20～25℃、湿度为80%以上、光照强度为240μmol.m-2.s-1时,铁皮石斛的净光合速率达到最大,为其生长的最佳条件。
Taking Dendrobium candidum seedlings as the experimental material,the effect of illumination intensity under different temperature and humidity conditions on its photosynthetic rate were studied.The results showed that illumination intensity had little effect on the photosynthetic rate under the condition of low temperature and low humidity;when cultivated at low temperature and high humidity,the photosynthetic rate increased with light intensity increased,while at high temperature and low humidity,the photosynthetic rate increased when illumination intensity dropped.The net photosynthetic rate of Dendrobium candidum reached the maximum when it was cultivated at 20～25℃,80 percent humidity and with 240 μmol·m-2·s-1 of illumination intensity,which should be the optimal growth condition.
出处
《北方园艺》
CAS
北大核心
2013年第8期119-122,共4页
Northern Horticulture
基金
贵州省科技创新人才团队建设资助项目(黔科合人才团队[2009]4007号)
贵州省青年教师基金资助项目(黔科合J字LKS[2010]16号)
关键词
铁皮石斛
光照强度
光合速率
Dendrobium candidum
illumination intensity
photosynthetic rate
