配方施肥对盆栽'康乃馨'杜鹃生长及生理特性的影响
Effects of Formula Fertilization on Growth and Physiological Characteristics of Potted Rhododendron hybrid'Carnation'
摘要
Abstract
To screen the optimal fertilizer formula for pot cultivation of Rhododendron hybrid'Carnation',a three-factor three-level L9(34)orthogonal test design was adopted to systematically investigate the effects of different nitrogen(N),phosphorus(P),and potassium(K)ratios on plant growth and physiological characteristics.The test factors included urea(N≥46%,set at 0.5,1.0,and 1.5 g/pot,represented by N1,N2,and N3 respectively),superphosphate(P2O5≥12%,set at 0.8,1.6,and 2.4 g/pot,represented by P1,P2,and P3 respectively),and potassium sulfate(K2O≥52%,set at 1.0,2.0,and 3.0 g/pot,represented by K1,K2,and K3 respectively).The results showed that treatment M5(N2P2K2)significantly promoted plant height growth and flower quantity,while treatment M6(N2P3K1)was most conducive to stem diameter thickening.The application amounts of P and K fertilizers had significant effects on the accumulation of aboveground,underground,and total biomass.Treatment M9 had the highest chlorophyll content;treatment M5 had the optimal soluble sugar content;treatment M7(N3P1K2)had the highest soluble protein content;in terms of antioxidant enzyme activity,treatment N1P2K1 had the highest superoxide dismutase activity,and treatment N3P1K1 had the highest peroxidase content;treatment M7 had the lowest malondialdehyde content.Based on the comprehensive evaluation by principal component analysis,the comprehensive score ranking of each treatment was M5>M4>M6>M1>M2>M7>M8>M3>M9>CK(control).Among them,the optimal treatment M5 was most effective in promoting the growth,enhancing physiological activity,and increasing flowering of'Carnation'.This provides a theoretical basis for the optimization of efficient cultivation and propagation techniques for'Carnation'.关键词
杜鹃/肥料/生长/生理特性Key words
Rhododendron hybrid/Fertilizer/Growth/Physiological characteristic引用本文复制引用
吴林世,李巧云,廖菊阳,彭立云,宋胤,黄雅奇,王玲,陈婵,刘艳..配方施肥对盆栽'康乃馨'杜鹃生长及生理特性的影响[J].热带亚热带植物学报,2026,34(3):317-327,11.基金项目
林业生态保护修复及发展专项(XLK202501) （XLK202501）
中央财政林业科技推广示范基金项目([2023]XT20) （[2023]XT20）
湖南省自然科学面上基金项目(2024JJ5235) （2024JJ5235）
湖南省林业科技创新项目(XLKY202303,XLKY202313) （XLKY202303,XLKY202313）
湖南省利用欧洲投资银行贷款提高森林质量和效率示范项目(OT-s-KTA4)资助 This work was supported by the Special Project for Ecological Protection,Restoration and Development of Forestry(Grant No.XLK202501),the Project for Forestry Science and Technology Promotion and Demonstration of Central Finance(Grant No.[2023]XT20),the Project for Natural Science in Hunan(Grant No.2024JJ5235),the Project for Forestry Science and Technology Innovation in Hunan(Grant No.XLKY202303,XLKY202313),and the Demonstration Project for Improving Forest Quality and Efficiency in Hunan by Utilizing Loans from the European Investment Bank(Grant No.OT-s-KTA4). （OT-s-KTA4）
