森林工程2025，Vol.41Issue(6)：1145-1155,11.DOI:10.7525/j.issn.1006-8023.2025.06.005
复幼处理对小黑杨叶片营养成分及光合特性的影响
Effects of Rejuvenation Treatment on Nutritional Composition and Photosynthetic Characteristics of Populus simonii×P.nigra Leaves
摘要
Abstract
Exploring the effects of different rejuvenating treatment measures on the nutritional composition,secondary metabolites and photosynthetic characteristics of Populus simonii×P.nigra leaves,and providing a theoretical basis for the establishment of the rejuvenating system of P.simonii×P.nigra in forestry practice in the future.The 40-year-old su-perior clones of P.simonii×P.nigra were rejuvenated and cut into seedlings(the mother tree cutting seedlings were used as the control group)by two methods of buried stems and buried roots.The differences in water content,total flavo-noid content,and light saturation point among the three cutting seedlings were measured and analyzed.The results showed that the rejuvenating treatment could significantly increase the water content and nutrient element mass fraction of P.simonii×P.nigra leaves.Among them,the relative water content(81.600%)and total potassium mass fraction(2.332%)of the leaves of the buried stem cutting seedlings were the highest.The contents of secondary metabolites such as total phenolics(1.633%)and total flavonoids(6.214%)in the leaves of buried root cutting seedlings were sig-nificantly higher than those in the other two leaves.The light saturation point(1 585.093,1 730.273 μmol/(m2·s))and CO2 saturation point(1 132.690、1 123.560 μmol/mol)of the leaves of the buried root and stem cutting seedlings were higher than those of the mother tree,which improved the photosynthetic capacity of P.simonii×P.nigra to a cer-tain extent.It can be seen that rejuvenating treatment will have a positive impact on the nutritional composition and pho-tosynthetic characteristics of P.simonii×P.nigra leaves.关键词
小黑杨/复幼处理/埋干/埋根/扦插/营养成分/光响应曲线,光响应参数Key words
Populus simonii×P.nigra/rejuvenation treatment/buried stem/buried root/cuttings/nutritional composi-tion/light response curve,light response parameters分类
生物学引用本文复制引用
叶洲辰,杨顺,于添化,杨佳楠,司思,季晓慧,史绍林..复幼处理对小黑杨叶片营养成分及光合特性的影响[J].森林工程,2025,41(6):1145-1155,11.基金项目
黑龙江省省属科研院所科研业务费项目(CZKYF2023-1-C029) （CZKYF2023-1-C029）
黑龙江省省属高等学校基本科研业务费科研项目(145209142 （）
145209220) （）
黑龙江省大学生创新创业训练计划项目(S202410232104). （S202410232104）
