气象与环境学报Issue(1)：84-89,6.DOI:10.3969/j.issn.1673-503X.2015.01.012
华北冬小麦品种演变过程中CO 2补偿点变化分析
Analysis of compensation point variation to CO 2 with different varieties of winter wheat in North China
摘要
Abstract
Compensation point to CO2 is one of the key parameters for crop growth model.Systematic measure-ments of parameters for physiological-ecology of different varieties of winter wheat before 1949 and from 1949 to 2005 in North China were conducted using a Licor-6400.Based on these measurements,rectangular hyperbolic photosynthetic models of different winter wheat varieties in North China involving the function of CO2 were fitted in order to determine compensation point to CO2 in different varieties in different time.The results indicate that the compensation point to CO2 decreases with increase of photosynthetic photon flux density(PPFD)in North China. Under 800 μmol·m-2·s-1 PPFD conditions,the compensation point to CO2 of the wild variety is the highest,reac-hing 123. 40μmol·mol-1 .During 1949-2005,the compensation point to CO2 varies obviously with varieties,with the highest value of 107. 07 μmol·m-2·s-1 for the Taishan No.1 variety and the lowest value of 57. 25 μmol·mol-1 for the Hongtutou variety.Difference of maximum and minimum values between different varieties of winter wheat reaches 49. 82 μmol·mol-1 ,and it suggests that compensation point to CO2 changes significantly with evolution of winter wheat varieties in North China.The study establishes rectangular hyperbolic photosynthetic models of seven typical winter wheat varieties in North China involving the function of CO2 ,and identifies the compensation point to CO2 ,which provide the basic data set to develop crop models for evaluation of impact of climate change on ag-riculture in North China.关键词
CO2 补偿点/冬小麦/生理生态参数/作物生长模型Key words
Compensation point to CO2/Winter wheat/Parameters for physiological-ecology/Crop growth model分类
农业科技引用本文复制引用
邱美娟,刘建栋,邬定荣,刘玲,毕建杰..华北冬小麦品种演变过程中CO 2补偿点变化分析[J].气象与环境学报,2015,(1):84-89,6.基金项目
公益性行业（气象）科研专项（GYHY201206022）和国家科技支撑计划项目（2011BAD32B02）共同资助。 （）
