热带农业科学2026，Vol.46Issue(5)：20-30,11.DOI:10.12008/j.issn.1009-2196.2026.05.003
平陆运河沿岸荔枝古树健康评价及其土壤影响因素研究
Study on the Health Status and Soil-Related Influencing Factors of Ancient Litchi chinensis Sonn.Trees Along the Pinglu Canal
摘要
Abstract
To address the conservation needs of ancient and notable trees in the context of the Pinglu Canal construction,this study assessed the health status and soil nutrient conditions of ancient lychee trees(Litchi chinensis Sonn.)in the Qinzhou section along the canal.The objective was to provide a scientific basis for the in-situ protection and maintenance management of these trees during canal development.Taking 59 ancient lychee trees within the in-situ protection zone of the Pinglu Canal as research subjects,the study employed field surveys and principal component analysis(PCA)to determine tree health grades.Rhizosphere soil samples were collected for chemical property testing,and correlation analysis and redundancy analysis(RDA)were used to explore the asso-ciations between soil nutrients and tree health indicators.The results indicated that:(1)the overall health of the ancient lychee trees in the study area was generally poor,with only 28.81%of the individuals classified as healthy;(2)tree vigor,crown shape,pests and diseases,and leaf color were critical factors influencing the healthy growth of the trees;(3)soil nutrient status,particularly soil or-ganic matter(SOM),total nitrogen(TN),and ammonium nitrogen(AN),showed significant correlations with tree health grades;and(4)according to the standards of the Second National Soil Survey,soil carbon and potassium levels in the study area were moderate,while nitrogen content was generally low.The severely damaged trees exhibited the lowest levels of SOM and nitrogen.Consequent-ly,future maintenance and management should prioritize targeted fertilization to address soil nutrient deficiencies and improve soil nutrient status.关键词
荔枝古树/健康评价/土壤性质/影响因素/评价体系Key words
Litchi chinensis Sonn./health assessment/soil properties/influencing factors/evaluation system分类
农业科技引用本文复制引用
覃彦迪,潘丁晖,周椤灿,邓溧辉,李程,滕维超..平陆运河沿岸荔枝古树健康评价及其土壤影响因素研究[J].热带农业科学,2026,46(5):20-30,11.基金项目
广西林业设计院自筹科技项目"基于古树健康评价体系的平陆运河项目古树保护技术研究"(No.林勘科研[2023]-04). （No.林勘科研[2023]-04）
