江西农业学报2026，Vol.38Issue(1)：22-27,6.DOI:10.19386/j.cnki.jxnyxb.2026.01.004
控水炼苗对辣椒幼苗生长和光合特性的影响
Effects of Water Control in Seedling Hardening on Growth and Photosynthetic Characteristics of Pepper Seedlings
摘要
Abstract
The seedling experiment was conducted to study the effects of water control treatment with 100%,80%,60%and 40%substrate maximum water holding capacity on the growth and photosynthetic characteristics of pepper seedlings.The results showed that with the increase of water control degree(100%to 40%),the plant height showed a downward trend,and the stem diameter,shoot dry weight,root dry weight,plant dry weight,seedling index leaf area per plant,leaf SPAD value,net photosynthetic rate,stomatal conductance,transpiration rate,maximum photochemical efficiency,actual photochemical efficiency and photochemical quenching showed a trend of increasing first and then decreasing,and the intercellular CO2 concentration and non-photochemical quenching decreased first and then increased.Correlation analysis showed that the seedling index was significantly negatively correlated with intercellular CO2 concentration and non-photochemical quenching,and was significantly positively correlated with all other indexes.In conclusion,moderate water control in seedling hardening can improve the photosynthetic characteristics of leaves to promote seedling growth,thereby increasing the seedling index and stress resistance of pepper,while excessive water control(40%)has an inhibitory effect.In general,60%water control in seedling hardening is a suitable water management strategy for cultivating strong seedlings.关键词
控水炼苗/辣椒幼苗/生长指标/光合特性/壮苗指数Key words
Water control in seedling hardening/Pepper seedlings/Growth index/Photosynthetic characteristics/Seedling index分类
农业科技引用本文复制引用
胡晨曦,杨剑婷,张杰,翟思龙,祁建波,陈以博,张永泰,张永吉..控水炼苗对辣椒幼苗生长和光合特性的影响[J].江西农业学报,2026,38(1):22-27,6.基金项目
江苏省重点研发项目(BE2021330) （BE2021330）
江苏里下河地区农业科学研究所科研发展专项(SJ[22]111). （SJ[22]111）
