中南林业科技大学学报2025，Vol.45Issue(7)：23-31,9.DOI:10.14067/j.cnki.1673-923x.2025.07.003
土壤、光照和NAA对闽楠生长和植株构型的影响
Effects of soil,light and NAA on the growth and configuration of Phoebe bournei
摘要
Abstract
[Objective]To provide theoretical basis for promoting individual growth and plant configuration of Phoebe bournei seedlings.[Method]Two-year-old P.bournei was selected as the research object,with the complete interaction design of three factors,to explore the effects of soil type(S1 and S2),light intensity(25%,50%,75%and 100%light transmittance),naphthylacetic acid concentration(0,25,50 and 75 mg/L)and their interactions on its growth and configuration.[Result]1)The height growth rate,ground diameter growth rate,the ratio of aboveground and underground biomass,stem biomass,branch biomass,leaf biomass,crown width,branch number,and leaf number of P.bournei seedlings treated with S2 were significantly better than those treated with S1.The light intensity and hormone levels in S1 significantly affected the biomass of each layer's main stem,2/4 branch biomass,2/4 and 3/4 leaf biomass,2/4 and 4/4 branch number,and 2/4 leaf number.The light intensity and hormone levels in S2 only significantly affected 2/4 and 3/4 leaf biomass,4/4 branch number,and 3/4 leaf number;2)Among the two common soil types,P.bournei seedlings performed best under moderate light intensity of 50%or 75%.Low or high light intensity inhibited the accumulation of P.bournei stem biomass,branch biomass,leaf biomass,and leaf quantity.The ratio of aboveground and underground biomass under 75%and 100%light intensity treatments were lower than that under 25%and 50%light intensity treatments;3)Under the same soil type conditions,there were significant differences in the effects of light intensity and NAA concentration on the growth and configuration of P.bournei,but under the same light intensity,the effect of NAA alone was not significantly different;4)Among the three factors that had the most significant impact on the growth and configuration of P.bournei,soil type was the most significant,followed by light and its interaction with soil,hormones and their interaction with soil or light,and finally the interaction of the three factors.[Conclusion]The individual growth and plant configuration of P.bournei seedlings treated with soil S2 were significantly better than those treated with soil S1.The overall growth and configuration of P.bournei seedlings treated with 75%light transmittance and 0 mg/L NAA in S2 were superior to other treatments,with the best performance in ground diameter,3/4 leaf number,and 2/4 leaf biomass.The research results are helpful in screening the key and suitable cultivation conditions for P.bournei seedlings,thereby providing scientific basis for the management of P.bournei seedlings.关键词
闽楠/生长/构型/土壤类型/光照强度/萘乙酸Key words
Phoebe bournei/growth/configuration/soil type/light intensity/NAA分类
农业科技引用本文复制引用
王丽云,喻龙华,陈家堂,厉月桥,周幼成,刘源博,宋连生,汪盛民..土壤、光照和NAA对闽楠生长和植株构型的影响[J].中南林业科技大学学报,2025,45(7):23-31,9.基金项目
中央级公益性科研院所基本科研业务费专项(CAFYBB2020MB004) （CAFYBB2020MB004）
"十四五"国家重点研发计划专题(2022YFF1303003-02). （2022YFF1303003-02）
