森林工程2025，Vol.41Issue(6)：1135-1144,10.DOI:10.7525/j.issn.1006-8023.2025.06.004
水分和氮磷添加对水曲柳幼苗生长及光合作用的影响
Effects of Water and Nitrogen-Phosphorus Additions on the Growth and Photosynthesis of Fraxinus mandshurica Seedlings
摘要
Abstract
To investigate the effects of nitrogen and phosphorus additions and water treatments on the growth and photo-synthetic characteristics of Fraxinus mandshurica seedlings,this study used one-year-old seedlings of F.mandshurica as the research subject.A randomized block design was utilized with three water gradients:drought(DR,volumetric water content 13%),control(CK,volumetric water content 26%),and water addition(W,volumetric water content 39%),and four fertilization gradients:N0P0(0 g/plant N,0 g/plant P),N1P1(0.5 g/plant N,0.25 g/plant P),N2P2(1 g/plant N,0.5 g/plant P),and N3P3(1.5 g/plant N,0.75 g/plant P).The growth,biomass allocation,and photosynthetic charac-teristics of F.mandshurica seedlings under different water and fertilizer treatments were analyzed to elucidate their physi-ological responses to these conditions.The results showed that water availability had a more significant impact on the growth of F.mandshurica seedlings compared to nitrogen and phosphorus fertilization.When soil water content was 39%and fertilization reached N2P2,the seedling height growth,base diameter growth,total biomass,and net photosynthetic rate achieved their maximum values.Specifically,these parameters were 82.59%,39.83%,74.61%,and 64.03%higher,respectively,compared to the control(soil water content 26%+N0P0).Compared with water addition treament,drought significantly reduced indicators such as seedling height growth,base diameter growth,total biomass,and net photosynthetic rate of F.mandshurica seedlings.Therefore,appropriate fertilization can enhance the growth of F.mandshurica seedlings under adequate water conditions.These findings provide a theoretical basis for the cultivation of F.mandshurica seedlings.关键词
水曲柳/氮磷添加/水分处理/生物量/光合特性Key words
Fraxinus mandshurica/nitrogen and phosphorus addition/water treatment/biomass/photosynthetic properties分类
农业科技引用本文复制引用
王鹏洋,赵欣雨,李博洋,沈海龙,杨剑飞..水分和氮磷添加对水曲柳幼苗生长及光合作用的影响[J].森林工程,2025,41(6):1135-1144,10.基金项目
国家重点研发计划青年科学家项目(2022YFD2201100). （2022YFD2201100）
