热带农业工程2026，Vol.50Issue(4)：167-170,4.DOI:10.27056/j.issn2096-725X.2026.04.031
干旱胁迫对杉木幼苗生长的影响
The Effects of Drought Stress on the Growth of Chinese Fir Seedlings
张猛华 1张中华1
作者信息
- 1. 贵州省智林众诚工程咨询有限公司 贵州贵阳 550001
- 折叠
摘要
Abstract
Using one-year-old seedling-stage Chinese fir(Pinus massoniana)as the study subject,six drought treatment gradients were established by artificially controlling water supply to investigate the effects of drought stress on seedling growth.Results demonstrated that as soil moisture decreased,the ground diameter,plant height,number of leaves,and leaf area of Chinese fir seedlings all exhibited significant declines,with biomass accumulation being markedly inhibited-particularly in the above-ground portion,where the reduction was greater than in the below-ground portion.Mild drought(65％soil moisture)already caused growth inhibition;moderate drought(50％soil moisture)resulted in sta-tistically significant differences across all metrics;severe drought(30％soil moisture)led to nearly a 50％loss in biomass.The root crown ratio increased significantly under severe drought conditions.This study identified the critical drought tolerance threshold for Chinese fir seedlings,providing a scien-tific basis for water management in Chinese fir afforestation projects in Guiyang City.关键词
杉木/幼苗生长/干旱胁迫Key words
chinese fir/seedling growth/drought stress分类
农业科技引用本文复制引用
张猛华,张中华..干旱胁迫对杉木幼苗生长的影响[J].热带农业工程,2026,50(4):167-170,4.
