杨梅光合速率日变化及其与气候生态因子的关系  

Diurnal Change of Photosynthetic Rate of Myrica Rubra and Relationship with Climate Ecology Factors

作　　者：袁德辉[1] 金志凤[1] 景元书[2] 洪毅 

机构地区：[1]浙江省气候中心,杭州310017 [2]南京信息工程大学,南京210044 [3]丽水市气象局,浙江丽水323000

出　　处：《科技通报》2010年第4期560-562,共3页Bulletin of Science and Technology

基　　金：科技部农业科技成果转化资金项目(2008GB24160442);科技部气象行业专项(GYHY200906023);浙江省科技厅科技计划(2005C33050)

摘　　要：春季,在晴好天气条件下,用目前国外先进的光合作用测定系统——LI-6400光合仪,对杨梅的光合速率进行了测定。结果表明,杨梅的光合速率随着环境因子的变化而变化,光合速率的日变化进程为典型的单峰型,最大净光合速率为7.24μmolco2·m-2·s-1,出现在午后13时。运用相关分析和通径分析表明,对杨梅光合作用日变化直接影响最大的气候生态因子是气温,其次是大气相对湿度和光合有效辐射。Photosynthetic rate of waxberry was measured by a portable photosynthesis measuring system of Li-6400R under fine weather conditions in Zhejiang Province in the spring of 2006. Results show that the photosynthetic rate of waxberry varies with environmental factors on clear days of the spring. Its diurnal variation presents a single-peaked course with a maximum rate of 7.24μmolco2·m-2·s-1 at 13：00. Correlation and hemagogic analysis indicate that climatic ecological factors of greatest importance in daily photosynthetic change are temperature, humidity and PAR.

关 键 词：光合速率 日进程 气候生态因子 杨梅 

分 类 号：S667.7[农业科学—果树学]