荔枝光合多因子测试结果比较分析研究  

The Comparative Analysis of Multiple Factors in Relation to Photosynthetic Rate of Litchi chinensis

作　　者：何华[1] 李晖[1] 龙晔[1] 姜鹏[1] HE Hua;LI Hui;LONG Ye;JIANG Peng(Yunnan University, Kunming, Yunnan 650091)

机构地区：[1]云南大学,昆明650091

出　　处：《陕西林业科技》2021年第1期22-26,共5页Shaanxi Forest Science and Technology

基　　金：云南省教育厅科学研究基金项目(2019J0021)。

摘　　要：基于均匀设计原理用LI-6400光合测定系统对成年荔枝在不同光照强度、温度、湿度组合因子下的光合速率进行了对比测试。对测试结果进行了多元一次、多元二次、多元多次回归对比分析,得出多元多次回归方程对光照强度、温度、湿度多因子组合下的光合速率性状描述效果最好。结果表明:在冬季影响荔枝光合速率的主要因子是光照强度,其次是湿度、温度。其中,光强与光合速率呈对数曲线正相关,湿度与光合速率呈h2曲线负相关,温度与光合速率呈较弱正相关。The photosynthetic rate of Litchi chinensis had been observed by means of Li-6400 Photosynthesis Analyzer to explore the influence of multiple factors(light intensity,temperature,and humidity)upon the mature leaf based on Uniform Design.The comparative analysis between Linear Regression,multivariate quadratic regression,and multiple stepwise regressions indicated that multiple stepwise regressions were better than the others.The results indicated that light intensity is the primary factor affecting photosynthetic rate of Litchi chinensis in winter,followed by the relative humidity of atmosphere and air temperature.There was a positive correlation(in curve)between the light intensity and the photosynthetic rate.An h2negative correlation was found between the relative humidity and the photosynthetic rate.The temperature level was weakly correlated with the photosynthetic rate level.

关 键 词：荔枝 光合速率 多因子 均匀设计 回归分析 

分 类 号：Q945.11[生物学—植物学]