黑河中游沙荒地珍珠油杏夏季光合作用日变化规律研究  

Study on Summer Diurnal Variation of Photosynthesis of Zhenzhuyouxing Apricot in Sandy Wasteland of Middle Heihe River

作　　者：周德峰 韩多红 孟好军 赵涛 郭徽 ZHOU Defeng;HAN Duohong;MENG Haojun;ZHAO Tao;GUO Hui(Forest Farm of Xichengyi,Zhangye 734000;College of life sciences and engineering,Hexi University,Zhangye 734000;Academy of Water Resources Conservation Forests in Qilian Mountains of Gansu Province,Zhangye 734000;Shigangdun Natural Vegetation Management and Protection Station,Zhangye 734000,China)

机构地区：[1]甘州区西城驿林场,甘肃张掖734000 [2]河西学院生命科学与工程学院,甘肃张掖734000 [3]甘肃省祁连山水源涵养林研究院,甘肃张掖734000 [4]甘州区石岗墩天然植被管护站,甘肃张掖734000

出　　处：《东北农业科学》2022年第3期128-130,共3页Journal of Northeast Agricultural Sciences

基　　金：甘肃省林业和草原科技计划项目(2018kj018)。

摘　　要：应用LI-6400XT便携式光合作用测定系统,对黑河中游沙荒地栽植的珍珠油杏夏季晴天的叶片净光合速率(Pn)、气孔导度(Gs)、蒸腾速率(Tr)等生理因子的日变化进程及其相互关系进行研究。结果表明:珍珠油杏叶片净光合速率日变化呈现出“双峰”曲线,存在明显的光合“午休”现象;气孔导度也呈现“双峰”型曲线变化规律;水分利用效率(WUE)与叶片蒸腾速率之间呈负相关关系。影响光合作用变化的因素既有气孔限制因素,也有非气孔限制因素。Using LI-6400XT portable photosynthetic measurement system,the diurnal variation process and their correlation of physiological factors such as Pn,Gs and Tr of Zhenzhuyouxing apricot planted in sandy wastelands in the middle reaches of Heihe River were studied.The results showed that the diurnal variation of Pn in the leaves of Zhenzhuyouxing apricot presented a bimodal curve,and there was an obvious photosynthetic"siesta"phenomenon.Gs also showed a bimodal curve.There was a negative correlation between WUE and Tr.The factors affecting photosynthesis include both stomatal and non-stomatal restriction.

关 键 词：黑河中游 珍珠油杏 光合作用 日变化规律 

分 类 号：S662.2[农业科学—果树学]