西南林业大学学报2025，Vol.45Issue(9)：38-45,8.DOI:10.11929/j.swfu.202407029
郁闭度和施肥类型对赤苍藤叶片生长及光合生理的影响
Effects of Canopy Density and Fertilization on Leaf Growth and Photosynthetic Physiology of Erythropalum scandens
摘要
Abstract
To examine the growth status and physiological properties of Erythrophalum scandens leaves un-der varying treatments,a two-year-old plant was selected as the research subject.A two-factor randomized block experimental design,incorporating 3 levels of canopy density and 5 types of fertilization,was employed to invest-igate the effects.The results showed that canopy density,fertilization type,and their interaction had a highly significant effect on most indices of E.scandens,and all levels of fertilization treatments,except for the control,were beneficial in alleviating the inhibition of photosynthesis in E.scandens under canopy conditions;under the same type of fertilization,as the canopy density level increased,the fresh weight,leaf area,specific leaf area,dry weight,chlorophyll a,carotenoids,and the overall chlorophyll a/b of E.scandens leaves gradually in-creased,while the content of soluble sugars and soluble proteins showed a decreasing trend;under the same canopy condition,as the content of organic fertilizer in the fertilization increased,the net photosynthetic rate(Pn),stomatal conductance(Gs),and transpiration rate(Tr)of E.scandens leaves gradually increased,and the intercellular CO2 concentration(Ci)showed a decreasing trend;in the membership degree analysis,the L1F3 treat-ment(moderate canopy density 0.42-0.51+compound fertilizer∶bioorganic fertilizer=1∶1)wasthe most com-prehensively optimal,and under the same type of fertilization,the score of L1(moderate canopy density 0.42-0.51)was the best.关键词
郁闭度/施肥/赤苍藤/生长/光合生理/交互作用Key words
canopy closure/apply fertilizer/Erythropalum scandens/growth/photosynthetic physiology/in-teraction effect分类
农业科技引用本文复制引用
黄雪梅,黄景贵,赵俊辉,陈翩,王凌晖..郁闭度和施肥类型对赤苍藤叶片生长及光合生理的影响[J].西南林业大学学报,2025,45(9):38-45,8.基金项目
广西林业科技项目(桂林科研[2021]16号)资助 （桂林科研[2021]16号）
2022年广西壮族自治区财政林木良种繁育补助项目"木本蔬菜种质资源调查收集与基因库建立"资助 （）
"南宁树木园林下木本蔬菜种植技术研究与示范"项目(南宁树木园科字2018-1号)资助. （南宁树木园科字2018-1号）
