广西林业科学2023，Vol.52Issue(6)：694-699,6.DOI:10.19692/j.issn.1006-1126.20230603
不同类型山苍子植株光合特性研究
Study on Photosynthetic Characteristics of Different Litsea cubeba Types
摘要
Abstract
In order to provide scientific basis for cultivation and management of Litsea cubeba,taking different L.cubebas types as research objects,photosynthetic parameters were masured to explore differences of photo-synthetic characteristics of different L.cubebas types,and correlations among net photosynthetic rates and main environmental factors were analyzed.Results showed that net photosynthetic rates of different L.cubeba types showed trends of increase with increase of photosynthetically active radiation,and reached light saturation points when photosynthetically active radiation was 1 800µmol·m-2·s-1.Net photosynthetic rate of 4-year-old male plants was higher than those of 1-year-old and 2-year-old seedlings and 4-year-old female plants.There were significant differences in light saturation points,light compensation points and apparent quantum ef-ficiencies of different L.cubeba types,and these three parameters of 4-year-old male plants were the highest,which were 0.264 6µmol·m-2·s-1,1 382.31µmol·m-2·s-1 and 0.009 1 mol/mol,respectively.Diurnal variation curves of net photosynthetic rate and transpiration rate(except for 1-year-old seedlings)of different L.cubeba types had double peaks,indicated that there was lunch break in photosynthesis.Net photosynthetic rates of dif-ferent L.cubeba types were positively significantly correlated with photosynthetically active radiation.Places with strong lights should be selected when planting L.cubeba,and appropriate pruning should be carried out at later stage,and female plants should be supplemented with fertilizer in time.关键词
光响应曲线/光合日变化/净光合速率/山苍子Key words
light response curve/diurnal variation of photosynthesis/net photosynthetic rate/Litsea cubeba分类
林学引用本文复制引用
邹蓉,范进顺,孙菲菲,邓丽丽,韦霄,史艳财..不同类型山苍子植株光合特性研究[J].广西林业科学,2023,52(6):694-699,6.基金项目
国家林业和草原局重点研发项目(GLM[2021]037号) （GLM[2021]037号）
广西植物所基本业务费项目(桂植业22005) （桂植业22005）
